TY  - CONF
AU  - Kolarević, Stoimir
AU  - Micsinai, Adrienn
AU  - Szanto-Egesz, Reka
AU  - Lukacs, Alena
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Đorđević, Ana
AU  - Vojnović-Milutinović, Danijela
AU  - Kirschner, Alexander
AU  - Farnleitner, Andreas
AU  - Linke, Rita
AU  - Đukić, Aleksandar
AU  - Kostić, Jovana
AU  - Sunjog, Karolina
AU  - Paunović, Momir
PY  - 2024
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6693
AB  - Pollution of surface waters still represents one of the major environmental challenges in the Republic of Serbia, where wastewaters are discharged directly into the recipients without proper treatment. Within the last decade, we have assessed the microbiological water quality of more than 100 sites situated at different water bodies in Serbia. Quality was determined using faecal indicator bacteria, while microbial source tracking was employed to assess the source of pollution. Almost 50 % of the investigated sites were characterized by critical or even higher level of faecal contamination indicating that untreated wastewaters indeed represent significant pollution pressure on surface waters. Human-associated markers were prevalent in samples from the majority of contaminated sites but the source of pollution was not exclusively human-associated. 
The impact on the water quality of the Danube River was demonstrated in our previous research conducted at the whole river level within the Joint Danube Surveys. In the river stretch from Novi Sad to its confluence with the Velika Morava River, all the midstream samples were critically polluted. In this section, the highest level of pollution was recorded downstream of Belgrade. As ultimate recipients of wastewaters, Danube and its largest tributary Sava currently represent the only solution for disposing of wastewaters originating from the Serbian capital‘s 1,700,000 inhabitants. Such kind of disposal rises additional issues such as antimicrobial resistance and presence of infectious agents in water. For instance during COVID-19 pandemic, we have demonstrated that SARS-CoV-2 RNA can be detected even in surface waters of the Danube River at the sites receiving high wastewater loads from Belgrade which was the unique case for the Basin. 
Despites its extreme importance in this case, wastewater-based epidemiology is neglected in our country and hereby we would like to emphasize the need for implementation of program of such kind in Serbia.
PB  - Belgrade: Serbian Society for Microbiology
C3  - Book of abstracts: 13th Congress of Microbiologists of Serbia: Mikromed Regio 5: From biotechnology to human and planetary health; 2024 Apr 4-6; Belgrade, Serbia
T1  - Impact of untreated wastewaters on the microbiological water quality  of the Danube River  and its tributaries in Serbia
SP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6693
ER  - 

@conference{
author = "Kolarević, Stoimir and Micsinai, Adrienn and Szanto-Egesz, Reka and Lukacs, Alena and Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Đorđević, Ana and Vojnović-Milutinović, Danijela and Kirschner, Alexander and Farnleitner, Andreas and Linke, Rita and Đukić, Aleksandar and Kostić, Jovana and Sunjog, Karolina and Paunović, Momir",
year = "2024",
abstract = "Pollution of surface waters still represents one of the major environmental challenges in the Republic of Serbia, where wastewaters are discharged directly into the recipients without proper treatment. Within the last decade, we have assessed the microbiological water quality of more than 100 sites situated at different water bodies in Serbia. Quality was determined using faecal indicator bacteria, while microbial source tracking was employed to assess the source of pollution. Almost 50 % of the investigated sites were characterized by critical or even higher level of faecal contamination indicating that untreated wastewaters indeed represent significant pollution pressure on surface waters. Human-associated markers were prevalent in samples from the majority of contaminated sites but the source of pollution was not exclusively human-associated. 
The impact on the water quality of the Danube River was demonstrated in our previous research conducted at the whole river level within the Joint Danube Surveys. In the river stretch from Novi Sad to its confluence with the Velika Morava River, all the midstream samples were critically polluted. In this section, the highest level of pollution was recorded downstream of Belgrade. As ultimate recipients of wastewaters, Danube and its largest tributary Sava currently represent the only solution for disposing of wastewaters originating from the Serbian capital‘s 1,700,000 inhabitants. Such kind of disposal rises additional issues such as antimicrobial resistance and presence of infectious agents in water. For instance during COVID-19 pandemic, we have demonstrated that SARS-CoV-2 RNA can be detected even in surface waters of the Danube River at the sites receiving high wastewater loads from Belgrade which was the unique case for the Basin. 
Despites its extreme importance in this case, wastewater-based epidemiology is neglected in our country and hereby we would like to emphasize the need for implementation of program of such kind in Serbia.",
publisher = "Belgrade: Serbian Society for Microbiology",
journal = "Book of abstracts: 13th Congress of Microbiologists of Serbia: Mikromed Regio 5: From biotechnology to human and planetary health; 2024 Apr 4-6; Belgrade, Serbia",
title = "Impact of untreated wastewaters on the microbiological water quality  of the Danube River  and its tributaries in Serbia",
pages = "65",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6693"
}

Kolarević, S., Micsinai, A., Szanto-Egesz, R., Lukacs, A., Kračun-Kolarević, M., Jovanović Marić, J., Đorđević, A., Vojnović-Milutinović, D., Kirschner, A., Farnleitner, A., Linke, R., Đukić, A., Kostić, J., Sunjog, K.,& Paunović, M.. (2024). Impact of untreated wastewaters on the microbiological water quality  of the Danube River  and its tributaries in Serbia. in Book of abstracts: 13th Congress of Microbiologists of Serbia: Mikromed Regio 5: From biotechnology to human and planetary health; 2024 Apr 4-6; Belgrade, Serbia
Belgrade: Serbian Society for Microbiology., 65.
https://hdl.handle.net/21.15107/rcub_ibiss_6693

Kolarević S, Micsinai A, Szanto-Egesz R, Lukacs A, Kračun-Kolarević M, Jovanović Marić J, Đorđević A, Vojnović-Milutinović D, Kirschner A, Farnleitner A, Linke R, Đukić A, Kostić J, Sunjog K, Paunović M. Impact of untreated wastewaters on the microbiological water quality  of the Danube River  and its tributaries in Serbia. in Book of abstracts: 13th Congress of Microbiologists of Serbia: Mikromed Regio 5: From biotechnology to human and planetary health; 2024 Apr 4-6; Belgrade, Serbia. 2024;:65.
https://hdl.handle.net/21.15107/rcub_ibiss_6693 .

Kolarević, Stoimir, Micsinai, Adrienn, Szanto-Egesz, Reka, Lukacs, Alena, Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Đorđević, Ana, Vojnović-Milutinović, Danijela, Kirschner, Alexander, Farnleitner, Andreas, Linke, Rita, Đukić, Aleksandar, Kostić, Jovana, Sunjog, Karolina, Paunović, Momir, "Impact of untreated wastewaters on the microbiological water quality  of the Danube River  and its tributaries in Serbia" in Book of abstracts: 13th Congress of Microbiologists of Serbia: Mikromed Regio 5: From biotechnology to human and planetary health; 2024 Apr 4-6; Belgrade, Serbia (2024):65,
https://hdl.handle.net/21.15107/rcub_ibiss_6693 .

TY  - JOUR
AU  - Schachner-Gröhs, Iris
AU  - Koller, Michael
AU  - Leopold, Melanie
AU  - Kolm, Claudia
AU  - Linke, Rita
AU  - Jakwerth, Stefan
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Kandler, Wolfgang
AU  - Sulyok, Michael
AU  - Vierheilig, Julia
AU  - Toumi, Marwene
AU  - Farkas, Rózsa
AU  - Toth, Erika
AU  - Kittinger, Clemens
AU  - Zarfel, Gernot
AU  - Farnleitner, Andreas
AU  - Kirschner, Alexander
PY  - 2024
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6581
AB  - The global spread of antimicrobial resistance (AMR) in the environment is a growing health threat. Large rivers are of particular concern as they are highly impacted by wastewater discharge while being vital lifelines serving various human needs. A comprehensive understanding of occurrence, spread and key drivers of AMR along whole river courses is largely lacking. We provide a holistic approach by studying spatiotemporal patterns and hotspots of antibiotic resistance genes (ARGs) along 2311 km of the navigable Danube River, combining a longitudinal and temporal monitoring campaign. The integration of advanced faecal pollution diagnostics and environmental and chemical key parameters allowed linking ARG concentrations to the major pollution sources and explaining the observed patterns. Nine AMR markers, including genes conferring resistance to five different antibiotic classes of clinical and environmental relevance, and one integrase gene were determined by probe-based qPCR. All AMR targets could be quantified in Danube River water, with intI1 and sul1 being ubiquitously abundant, qnrS, tetM, blaTEM with intermediate abundance and blaOXA-48like, blaCTX−M-1 group, blaCTX−M-9 group and blaKPC genes with rare occurrence. Human faecal pollution from municipal wastewater discharges was the dominant factor shaping ARG patterns along the Danube River. Other significant correlations of specific ARGs were observed with discharge, certain metals and pesticides. In contrast, intI1 was not associated with wastewater but was already established in the water microbiome. Animal contamination was detected only sporadically and was correlated with ARGs only in the temporal sampling set. During temporal monitoring, an extraordinary hotspot was identified emphasizing the variability within natural waters. This study provides the first comprehensive baseline concentrations of ARGs in the Danube River and lays the foundation for monitoring future trends and evaluating potential reduction measures. The applided holistic approach proved to be a valuable methodological contribution towards a better understanding of the environmental occurrence of AMR.
PB  - Elsevier
T2  - Water Research
T1  - Linking antibiotic resistance gene patterns with advanced faecal pollution assessment and environmental key parameters along 2300 km of the Danube River
VL  - 252
DO  - 10.1016/j.watres.2024.121244
SP  - 121244
ER  - 

@article{
author = "Schachner-Gröhs, Iris and Koller, Michael and Leopold, Melanie and Kolm, Claudia and Linke, Rita and Jakwerth, Stefan and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Kandler, Wolfgang and Sulyok, Michael and Vierheilig, Julia and Toumi, Marwene and Farkas, Rózsa and Toth, Erika and Kittinger, Clemens and Zarfel, Gernot and Farnleitner, Andreas and Kirschner, Alexander",
year = "2024",
abstract = "The global spread of antimicrobial resistance (AMR) in the environment is a growing health threat. Large rivers are of particular concern as they are highly impacted by wastewater discharge while being vital lifelines serving various human needs. A comprehensive understanding of occurrence, spread and key drivers of AMR along whole river courses is largely lacking. We provide a holistic approach by studying spatiotemporal patterns and hotspots of antibiotic resistance genes (ARGs) along 2311 km of the navigable Danube River, combining a longitudinal and temporal monitoring campaign. The integration of advanced faecal pollution diagnostics and environmental and chemical key parameters allowed linking ARG concentrations to the major pollution sources and explaining the observed patterns. Nine AMR markers, including genes conferring resistance to five different antibiotic classes of clinical and environmental relevance, and one integrase gene were determined by probe-based qPCR. All AMR targets could be quantified in Danube River water, with intI1 and sul1 being ubiquitously abundant, qnrS, tetM, blaTEM with intermediate abundance and blaOXA-48like, blaCTX−M-1 group, blaCTX−M-9 group and blaKPC genes with rare occurrence. Human faecal pollution from municipal wastewater discharges was the dominant factor shaping ARG patterns along the Danube River. Other significant correlations of specific ARGs were observed with discharge, certain metals and pesticides. In contrast, intI1 was not associated with wastewater but was already established in the water microbiome. Animal contamination was detected only sporadically and was correlated with ARGs only in the temporal sampling set. During temporal monitoring, an extraordinary hotspot was identified emphasizing the variability within natural waters. This study provides the first comprehensive baseline concentrations of ARGs in the Danube River and lays the foundation for monitoring future trends and evaluating potential reduction measures. The applided holistic approach proved to be a valuable methodological contribution towards a better understanding of the environmental occurrence of AMR.",
publisher = "Elsevier",
journal = "Water Research",
title = "Linking antibiotic resistance gene patterns with advanced faecal pollution assessment and environmental key parameters along 2300 km of the Danube River",
volume = "252",
doi = "10.1016/j.watres.2024.121244",
pages = "121244"
}

Schachner-Gröhs, I., Koller, M., Leopold, M., Kolm, C., Linke, R., Jakwerth, S., Kolarević, S., Kračun-Kolarević, M., Kandler, W., Sulyok, M., Vierheilig, J., Toumi, M., Farkas, R., Toth, E., Kittinger, C., Zarfel, G., Farnleitner, A.,& Kirschner, A.. (2024). Linking antibiotic resistance gene patterns with advanced faecal pollution assessment and environmental key parameters along 2300 km of the Danube River. in Water Research
Elsevier., 252, 121244.
https://doi.org/10.1016/j.watres.2024.121244

Schachner-Gröhs I, Koller M, Leopold M, Kolm C, Linke R, Jakwerth S, Kolarević S, Kračun-Kolarević M, Kandler W, Sulyok M, Vierheilig J, Toumi M, Farkas R, Toth E, Kittinger C, Zarfel G, Farnleitner A, Kirschner A. Linking antibiotic resistance gene patterns with advanced faecal pollution assessment and environmental key parameters along 2300 km of the Danube River. in Water Research. 2024;252:121244.
doi:10.1016/j.watres.2024.121244 .

Schachner-Gröhs, Iris, Koller, Michael, Leopold, Melanie, Kolm, Claudia, Linke, Rita, Jakwerth, Stefan, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Kandler, Wolfgang, Sulyok, Michael, Vierheilig, Julia, Toumi, Marwene, Farkas, Rózsa, Toth, Erika, Kittinger, Clemens, Zarfel, Gernot, Farnleitner, Andreas, Kirschner, Alexander, "Linking antibiotic resistance gene patterns with advanced faecal pollution assessment and environmental key parameters along 2300 km of the Danube River" in Water Research, 252 (2024):121244,
https://doi.org/10.1016/j.watres.2024.121244 . .

TY  - CONF
AU  - Farnleitner, Andreas
AU  - Schachner, Iris
AU  - Jakwerth, Stefan
AU  - Kittinger, Clemens
AU  - Zarfel, Gernot
AU  - Kavka, Gerhard
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Toth, Erika
AU  - Blaschke, Alfred
AU  - Derx, Julia
AU  - Linke, Rita
AU  - Demeter, Katalin
AU  - Savio, Domenico
AU  - Resicher, Georg
AU  - Kir, Alexander
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6596
AB  - Sustainable and target-oriented microbiological water quality management of rivers needs
information on whole river systems, especially if catchments are large and international. The
microbiological water quality of rivers is of uttermost relevance for human health as river water is
used for several purposes (recreation, drinking water production, irrigation). Besides information on
faecal pollution levels, the origin of faecal pollution and the assessment of associated infection- and
health risks, e g. from antimicrobial resistant bacteria (ARB) are of increasing importance. This
contribution summarizes the concepts and main results from the Joint-Danube-Surveys (JDS) and
discusses future challenges and perspectives (pollution-scenario modelling, infection-risk
assessment) for the Danube River concerning its faecal and AMR pollution status.
Between 2001 and 2019, the whole Danube was sampled four times during the JDS 1 to 4. Beside
standard faecal indicator analysis, cutting-edge molecular detection concepts were applied, including
microbial source tracking (MST) markers by quantitative PCR (qPCR) and high-throughput ampliconsequencing of bacterial communities. For AMR-profiling, clinically relevant bacterial species were
isolated and tested for resistances and resistance genes were determined via qPCR.
With this, we could impressively demonstrate that the JDS create the required multi-national “big
picture” of the microbiological pollution status of the Danube River. Harmonised trans-border
microbiological water quality maps for the whole navigable Danube were established. MST marker
analysis elucidated that the main faecal pollution source along the whole river is human wastewater.
Combined analysis of faecal indicators, MST and AMR-profiles provided a solid basis for assessing the
potential health impacts of AMR associated with faecal pollution
PB  - Austrian Committee - International Association for Danube Research
C3  - Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
T1  - Joint Danube Survey 1 to 4: Concepts, Lessons Learned and Future Visions on Faecal Pollution and Antimicrobial Resistance
SP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6596
ER  - 

@conference{
author = "Farnleitner, Andreas and Schachner, Iris and Jakwerth, Stefan and Kittinger, Clemens and Zarfel, Gernot and Kavka, Gerhard and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Toth, Erika and Blaschke, Alfred and Derx, Julia and Linke, Rita and Demeter, Katalin and Savio, Domenico and Resicher, Georg and Kir, Alexander",
year = "2023",
abstract = "Sustainable and target-oriented microbiological water quality management of rivers needs
information on whole river systems, especially if catchments are large and international. The
microbiological water quality of rivers is of uttermost relevance for human health as river water is
used for several purposes (recreation, drinking water production, irrigation). Besides information on
faecal pollution levels, the origin of faecal pollution and the assessment of associated infection- and
health risks, e g. from antimicrobial resistant bacteria (ARB) are of increasing importance. This
contribution summarizes the concepts and main results from the Joint-Danube-Surveys (JDS) and
discusses future challenges and perspectives (pollution-scenario modelling, infection-risk
assessment) for the Danube River concerning its faecal and AMR pollution status.
Between 2001 and 2019, the whole Danube was sampled four times during the JDS 1 to 4. Beside
standard faecal indicator analysis, cutting-edge molecular detection concepts were applied, including
microbial source tracking (MST) markers by quantitative PCR (qPCR) and high-throughput ampliconsequencing of bacterial communities. For AMR-profiling, clinically relevant bacterial species were
isolated and tested for resistances and resistance genes were determined via qPCR.
With this, we could impressively demonstrate that the JDS create the required multi-national “big
picture” of the microbiological pollution status of the Danube River. Harmonised trans-border
microbiological water quality maps for the whole navigable Danube were established. MST marker
analysis elucidated that the main faecal pollution source along the whole river is human wastewater.
Combined analysis of faecal indicators, MST and AMR-profiles provided a solid basis for assessing the
potential health impacts of AMR associated with faecal pollution",
publisher = "Austrian Committee - International Association for Danube Research",
journal = "Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria",
title = "Joint Danube Survey 1 to 4: Concepts, Lessons Learned and Future Visions on Faecal Pollution and Antimicrobial Resistance",
pages = "9",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6596"
}

Farnleitner, A., Schachner, I., Jakwerth, S., Kittinger, C., Zarfel, G., Kavka, G., Kolarević, S., Kračun-Kolarević, M., Toth, E., Blaschke, A., Derx, J., Linke, R., Demeter, K., Savio, D., Resicher, G.,& Kir, A.. (2023). Joint Danube Survey 1 to 4: Concepts, Lessons Learned and Future Visions on Faecal Pollution and Antimicrobial Resistance. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
Austrian Committee - International Association for Danube Research., 9.
https://hdl.handle.net/21.15107/rcub_ibiss_6596

Farnleitner A, Schachner I, Jakwerth S, Kittinger C, Zarfel G, Kavka G, Kolarević S, Kračun-Kolarević M, Toth E, Blaschke A, Derx J, Linke R, Demeter K, Savio D, Resicher G, Kir A. Joint Danube Survey 1 to 4: Concepts, Lessons Learned and Future Visions on Faecal Pollution and Antimicrobial Resistance. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. 2023;:9.
https://hdl.handle.net/21.15107/rcub_ibiss_6596 .

Farnleitner, Andreas, Schachner, Iris, Jakwerth, Stefan, Kittinger, Clemens, Zarfel, Gernot, Kavka, Gerhard, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Toth, Erika, Blaschke, Alfred, Derx, Julia, Linke, Rita, Demeter, Katalin, Savio, Domenico, Resicher, Georg, Kir, Alexander, "Joint Danube Survey 1 to 4: Concepts, Lessons Learned and Future Visions on Faecal Pollution and Antimicrobial Resistance" in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria (2023):9,
https://hdl.handle.net/21.15107/rcub_ibiss_6596 .

TY  - CONF
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Ilić, Marija
AU  - Anđus, Stefan
AU  - Paunović, Momir
AU  - Kolarević, Stoimir
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6595
AB  - Analiza mikrobiološkog kvaliteta vode na više lokaliteta (reke Tip 4 i 6, veštačka vodna tela
– akumulacije) na teritoriji Specijalnog rezervata prirode „Uvac“ obuhvatila je određivanje
koncentracije ukupnih koliforma i Escherichia coli pomoću Colilert-18 sistema. U slučaju
reka uzimani su površinski uzorci vode (dubina 0,2 m), dok su u slučaju akumulacija uzeti
uzorci sa više dubina. Najveći pritisci fekalnog zagađenja zabeleženi su na lokalitetima
Uvac-Čedovo i Vapa-Čedovo (umeren ekološki status – III klasa). Na rekama Tip 6
zabeležena je I ili II klasa zavisno od datuma uzorkovanja.
AB  - Analysis of the microbiological water quality at sampling sites within the Special nature
reserve „Uvac“ included determination of total coliforms and Escherichia coli
concentration using the Colilert-18 system. Surface water samples (depth 0.2 m) were taken
for rivers, while for reservoirs samples were taken from several depths. The highest
pressures of faecal pollution were recorded at sites Uvac-Čedovo and Vapa-Čedovo
(moderate ecological status, III class). In the case of the remaining analysed sites, I or II
class was recorded depending on the sampling date.
PB  - Belgarde: Serbian Association for Water Protection
C3  - Conference proceedings: 52nd Annual Conference of the Serbian Water Pollution Control Society: Water 2023; 2023 May 31 - Jun 2; Palić, Serbia
T1  - Analiza mikrobioloških parametara kvaliteta vode na području specijalnog rezervata prirode UVAC
T1  - Analysis of microbiological parameters of water quality in the area of the special nature reserve "UVAC"
SP  - 57
EP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6595
ER  - 

@conference{
author = "Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Ilić, Marija and Anđus, Stefan and Paunović, Momir and Kolarević, Stoimir",
year = "2023",
abstract = "Analiza mikrobiološkog kvaliteta vode na više lokaliteta (reke Tip 4 i 6, veštačka vodna tela
– akumulacije) na teritoriji Specijalnog rezervata prirode „Uvac“ obuhvatila je određivanje
koncentracije ukupnih koliforma i Escherichia coli pomoću Colilert-18 sistema. U slučaju
reka uzimani su površinski uzorci vode (dubina 0,2 m), dok su u slučaju akumulacija uzeti
uzorci sa više dubina. Najveći pritisci fekalnog zagađenja zabeleženi su na lokalitetima
Uvac-Čedovo i Vapa-Čedovo (umeren ekološki status – III klasa). Na rekama Tip 6
zabeležena je I ili II klasa zavisno od datuma uzorkovanja., Analysis of the microbiological water quality at sampling sites within the Special nature
reserve „Uvac“ included determination of total coliforms and Escherichia coli
concentration using the Colilert-18 system. Surface water samples (depth 0.2 m) were taken
for rivers, while for reservoirs samples were taken from several depths. The highest
pressures of faecal pollution were recorded at sites Uvac-Čedovo and Vapa-Čedovo
(moderate ecological status, III class). In the case of the remaining analysed sites, I or II
class was recorded depending on the sampling date.",
publisher = "Belgarde: Serbian Association for Water Protection",
journal = "Conference proceedings: 52nd Annual Conference of the Serbian Water Pollution Control Society: Water 2023; 2023 May 31 - Jun 2; Palić, Serbia",
title = "Analiza mikrobioloških parametara kvaliteta vode na području specijalnog rezervata prirode UVAC, Analysis of microbiological parameters of water quality in the area of the special nature reserve "UVAC"",
pages = "57-60",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6595"
}

Kračun-Kolarević, M., Jovanović Marić, J., Ilić, M., Anđus, S., Paunović, M.,& Kolarević, S.. (2023). Analiza mikrobioloških parametara kvaliteta vode na području specijalnog rezervata prirode UVAC. in Conference proceedings: 52nd Annual Conference of the Serbian Water Pollution Control Society: Water 2023; 2023 May 31 - Jun 2; Palić, Serbia
Belgarde: Serbian Association for Water Protection., 57-60.
https://hdl.handle.net/21.15107/rcub_ibiss_6595

Kračun-Kolarević M, Jovanović Marić J, Ilić M, Anđus S, Paunović M, Kolarević S. Analiza mikrobioloških parametara kvaliteta vode na području specijalnog rezervata prirode UVAC. in Conference proceedings: 52nd Annual Conference of the Serbian Water Pollution Control Society: Water 2023; 2023 May 31 - Jun 2; Palić, Serbia. 2023;:57-60.
https://hdl.handle.net/21.15107/rcub_ibiss_6595 .

Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Ilić, Marija, Anđus, Stefan, Paunović, Momir, Kolarević, Stoimir, "Analiza mikrobioloških parametara kvaliteta vode na području specijalnog rezervata prirode UVAC" in Conference proceedings: 52nd Annual Conference of the Serbian Water Pollution Control Society: Water 2023; 2023 May 31 - Jun 2; Palić, Serbia (2023):57-60,
https://hdl.handle.net/21.15107/rcub_ibiss_6595 .

TY  - CONF
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Đorđević, Jelena
AU  - Sunjog, Karolina
AU  - Nikolić, Ivan
AU  - Marić, Ana
AU  - Ilić, Marija
AU  - Simonović, Predrag
AU  - Alygizakis, Nikiforos
AU  - Ng, Kelsey
AU  - Oswald, Peter
AU  - Slobodnik, Jaroslav
AU  - Žegura, Bojana
AU  - Vuković-Gačić, Branka
AU  - Paunović, Momir
AU  - Kolarević, Stoimir
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6592
AB  - Assessment of impact of pollution in the environmental studies requires multi-endpoints approach to properly
link cause and effects of pollution with focus on chemical pollution. In this sense systematic weight-of-evidence
approach (WoE) with multiple lines of evidence (LoEs) is preferable to apply. The WoE approach highlights the
importance to identify strengths and weaknesses of used LoEs. Therefore, in this study we have tested efficacy
of genotoxicological endpoints as one of the LoEs in the in situ assessment of pollution effects in the freshwater
ecosystems using Alburnus alburnus (bleak) as a bioindicator species. Additional LoEs that were used in the
study are: component-based methods for the assessment of SumTU in water based on monitoring data of the
Serbian Environmental Protection Agency (SEPA), effect based methods employing in vitro genotoxicological
analyses of Joint Danube Survey 4 (JDS4) water extracts and field derived species inventories for the
assessment and indication of ecological status/potential based on SEPA and JDS4 data. The study was
conducted within the JDS4 campaign at nine sampling sites at the Tisa, Sava, Velika Morava and Danube rivers
in the Republic of Serbia. In the case of three sampling sites, the results were uniform, meaning that all four
LoEs pointed to pollution pressure. The differences in the LoEs outcomes for other sites indicated the
importance of multiple LoEs approach for proper identification of ecological impact. In the case of current
study we have identified comet and micronucleus assay to be appropriate for the genotoxicological assessment
in the in situ studies due to high sensitivity in discrimination of sites in relation to pollution intensity, while
RAPD analysis to be more suitable for controlled ex situ investigations.
PB  - Austrian Committee - International Association for Danube Research
C3  - Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
T1  - In situ genotoxicity assessment in the weight-of-evidence approach – The Joint Danube Survey 4 case study
SP  - 18
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6592
ER  - 

@conference{
author = "Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Đorđević, Jelena and Sunjog, Karolina and Nikolić, Ivan and Marić, Ana and Ilić, Marija and Simonović, Predrag and Alygizakis, Nikiforos and Ng, Kelsey and Oswald, Peter and Slobodnik, Jaroslav and Žegura, Bojana and Vuković-Gačić, Branka and Paunović, Momir and Kolarević, Stoimir",
year = "2023",
abstract = "Assessment of impact of pollution in the environmental studies requires multi-endpoints approach to properly
link cause and effects of pollution with focus on chemical pollution. In this sense systematic weight-of-evidence
approach (WoE) with multiple lines of evidence (LoEs) is preferable to apply. The WoE approach highlights the
importance to identify strengths and weaknesses of used LoEs. Therefore, in this study we have tested efficacy
of genotoxicological endpoints as one of the LoEs in the in situ assessment of pollution effects in the freshwater
ecosystems using Alburnus alburnus (bleak) as a bioindicator species. Additional LoEs that were used in the
study are: component-based methods for the assessment of SumTU in water based on monitoring data of the
Serbian Environmental Protection Agency (SEPA), effect based methods employing in vitro genotoxicological
analyses of Joint Danube Survey 4 (JDS4) water extracts and field derived species inventories for the
assessment and indication of ecological status/potential based on SEPA and JDS4 data. The study was
conducted within the JDS4 campaign at nine sampling sites at the Tisa, Sava, Velika Morava and Danube rivers
in the Republic of Serbia. In the case of three sampling sites, the results were uniform, meaning that all four
LoEs pointed to pollution pressure. The differences in the LoEs outcomes for other sites indicated the
importance of multiple LoEs approach for proper identification of ecological impact. In the case of current
study we have identified comet and micronucleus assay to be appropriate for the genotoxicological assessment
in the in situ studies due to high sensitivity in discrimination of sites in relation to pollution intensity, while
RAPD analysis to be more suitable for controlled ex situ investigations.",
publisher = "Austrian Committee - International Association for Danube Research",
journal = "Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria",
title = "In situ genotoxicity assessment in the weight-of-evidence approach – The Joint Danube Survey 4 case study",
pages = "18",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6592"
}

Kračun-Kolarević, M., Jovanović Marić, J., Đorđević, J., Sunjog, K., Nikolić, I., Marić, A., Ilić, M., Simonović, P., Alygizakis, N., Ng, K., Oswald, P., Slobodnik, J., Žegura, B., Vuković-Gačić, B., Paunović, M.,& Kolarević, S.. (2023). In situ genotoxicity assessment in the weight-of-evidence approach – The Joint Danube Survey 4 case study. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
Austrian Committee - International Association for Danube Research., 18.
https://hdl.handle.net/21.15107/rcub_ibiss_6592

Kračun-Kolarević M, Jovanović Marić J, Đorđević J, Sunjog K, Nikolić I, Marić A, Ilić M, Simonović P, Alygizakis N, Ng K, Oswald P, Slobodnik J, Žegura B, Vuković-Gačić B, Paunović M, Kolarević S. In situ genotoxicity assessment in the weight-of-evidence approach – The Joint Danube Survey 4 case study. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. 2023;:18.
https://hdl.handle.net/21.15107/rcub_ibiss_6592 .

Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Đorđević, Jelena, Sunjog, Karolina, Nikolić, Ivan, Marić, Ana, Ilić, Marija, Simonović, Predrag, Alygizakis, Nikiforos, Ng, Kelsey, Oswald, Peter, Slobodnik, Jaroslav, Žegura, Bojana, Vuković-Gačić, Branka, Paunović, Momir, Kolarević, Stoimir, "In situ genotoxicity assessment in the weight-of-evidence approach – The Joint Danube Survey 4 case study" in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria (2023):18,
https://hdl.handle.net/21.15107/rcub_ibiss_6592 .

TY  - CONF
AU  - Kolarević, Stoimir
AU  - Adrienn, Micsinai
AU  - Szanto-Egesz, Reka
AU  - Lukacs, Alena
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Đorđević, Ana
AU  - Vojnović-Milutinović, Danijela
AU  - Kirschner, Alexander
AU  - Farnleitner, Andreas
AU  - Linke, Rita
AU  - Đukić, Aleksandar
AU  - Kostić, Jovana
AU  - Sunjog, Karolina
AU  - Paunović, Momir
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6591
AB  - Pollution of natural water bodies is one of the biggest challenges in developing countries, such as
Serbia, where wastewater is discharged directly into the recipients without proper treatment and
poses serious threats to surface water quality, general safety and environmental health. Numerous
pathogenic microorganisms, bacteria, viruses, protozoa and helminthes may reach surface waters
and eventually contaminate groundwater. Despites its extreme importance in this case,
implementation of wastewater-based epidemiology is a challenge for developing countries, as the
majority of households are not connected to sewerage systems. Within our research, we have placed
major focus on recipients of wastewaters as an alternative of targeting raw wastewater. During the
fourth COVID-19 wave in Serbia that started in late February 2021 multiple water samples were
collected at 12 sites at Sava and Danube Rivers in the Belgrade city area which are under the impact
of untreated wastewaters.
SARS-CoV-2 RNA was quantified using RT-qPCR with primer sets targeting nucleocapsid (N1 and N2)
and envelope (E) protein genes. Microbiological (standard fecal indicator bacteria and microbial
faecal source tracking markers), epidemiological, physico-chemical and hydro-morphological
parameters were analysed in parallel. Out of 44 samples analyzed, 31 were positive for at least one
of the target regions of SARS-CoV-2. The results indicated that surveillance of SARS-CoV-2 RNA in
surface waters in context with the large amount of epidemiological and environmental metadata can
be used as epidemiological early-warning tool in countries with poor wastewater treatment.
PB  - Austrian Committee - International Association for Danube Research
C3  - Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
T1  - Applicability of wastewater based epidemiology in countries with poor wastewater treatment – COVID-19 case study in Serbia
SP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6591
ER  - 

@conference{
author = "Kolarević, Stoimir and Adrienn, Micsinai and Szanto-Egesz, Reka and Lukacs, Alena and Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Đorđević, Ana and Vojnović-Milutinović, Danijela and Kirschner, Alexander and Farnleitner, Andreas and Linke, Rita and Đukić, Aleksandar and Kostić, Jovana and Sunjog, Karolina and Paunović, Momir",
year = "2023",
abstract = "Pollution of natural water bodies is one of the biggest challenges in developing countries, such as
Serbia, where wastewater is discharged directly into the recipients without proper treatment and
poses serious threats to surface water quality, general safety and environmental health. Numerous
pathogenic microorganisms, bacteria, viruses, protozoa and helminthes may reach surface waters
and eventually contaminate groundwater. Despites its extreme importance in this case,
implementation of wastewater-based epidemiology is a challenge for developing countries, as the
majority of households are not connected to sewerage systems. Within our research, we have placed
major focus on recipients of wastewaters as an alternative of targeting raw wastewater. During the
fourth COVID-19 wave in Serbia that started in late February 2021 multiple water samples were
collected at 12 sites at Sava and Danube Rivers in the Belgrade city area which are under the impact
of untreated wastewaters.
SARS-CoV-2 RNA was quantified using RT-qPCR with primer sets targeting nucleocapsid (N1 and N2)
and envelope (E) protein genes. Microbiological (standard fecal indicator bacteria and microbial
faecal source tracking markers), epidemiological, physico-chemical and hydro-morphological
parameters were analysed in parallel. Out of 44 samples analyzed, 31 were positive for at least one
of the target regions of SARS-CoV-2. The results indicated that surveillance of SARS-CoV-2 RNA in
surface waters in context with the large amount of epidemiological and environmental metadata can
be used as epidemiological early-warning tool in countries with poor wastewater treatment.",
publisher = "Austrian Committee - International Association for Danube Research",
journal = "Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria",
title = "Applicability of wastewater based epidemiology in countries with poor wastewater treatment – COVID-19 case study in Serbia",
pages = "11",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6591"
}

Kolarević, S., Adrienn, M., Szanto-Egesz, R., Lukacs, A., Kračun-Kolarević, M., Jovanović Marić, J., Đorđević, A., Vojnović-Milutinović, D., Kirschner, A., Farnleitner, A., Linke, R., Đukić, A., Kostić, J., Sunjog, K.,& Paunović, M.. (2023). Applicability of wastewater based epidemiology in countries with poor wastewater treatment – COVID-19 case study in Serbia. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
Austrian Committee - International Association for Danube Research., 11.
https://hdl.handle.net/21.15107/rcub_ibiss_6591

Kolarević S, Adrienn M, Szanto-Egesz R, Lukacs A, Kračun-Kolarević M, Jovanović Marić J, Đorđević A, Vojnović-Milutinović D, Kirschner A, Farnleitner A, Linke R, Đukić A, Kostić J, Sunjog K, Paunović M. Applicability of wastewater based epidemiology in countries with poor wastewater treatment – COVID-19 case study in Serbia. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. 2023;:11.
https://hdl.handle.net/21.15107/rcub_ibiss_6591 .

Kolarević, Stoimir, Adrienn, Micsinai, Szanto-Egesz, Reka, Lukacs, Alena, Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Đorđević, Ana, Vojnović-Milutinović, Danijela, Kirschner, Alexander, Farnleitner, Andreas, Linke, Rita, Đukić, Aleksandar, Kostić, Jovana, Sunjog, Karolina, Paunović, Momir, "Applicability of wastewater based epidemiology in countries with poor wastewater treatment – COVID-19 case study in Serbia" in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria (2023):11,
https://hdl.handle.net/21.15107/rcub_ibiss_6591 .

TY  - CONF
AU  - Koller, Michel
AU  - Dielacher, Irina
AU  - Schachner, Iris
AU  - Leopold, Melanie
AU  - Jakwerth, Sefan
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Toth, Erika
AU  - Savio, Domenico
AU  - Farnleitner, Andreas
AU  - Kittinger, Clemens
AU  - Kirschner, Alexander
AU  - Zarfel, Gernot
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6593
AB  - Human induced antibiotic resistant bacteria (ARB) are not only found in clinical surroundings: large
rivers are of great concern as regards their spreading. This ongoing study´s aim is to analyse the
major propagation pathways and sources of ARB in the Danube, and to compare the results with
data obtained in 2013. Escherichia coli and Klebsiella spp. isolated during the 4th Joint Danube
Survey (2019) were tested for their antibiotic susceptibility. 22.24% of 1700 E. coli were resistant and
12.35% were multiresistant. 15.23 % of 696 Klebsiella spp. were resistant and 1.15% were
multiresistant. In comparison the data of 2013 and 2019 of both Enterobacteriaceae showed that the
wild type is still predominant. There were significant increases especially to fluoroquinolones and
augmentin and a significant decrease of resistances to tetracycline. However, the data of JDS4
showed a significant difference between E. coli and Klebsiella spp. regarding wild type, resistance and
multiresistance. Additionally, data of 1155 E. coli showed no seasonal trends in Austria during an
annual sampling. The comparison of E. coli from biofilms and corresponding water samples revealed
several significant differences between the compartments. In conclusion, the preliminary data of E.
coli from biofilm samples suggest that the biofilm as a stable colonization within waters reflects
especially the long term situation. Thus, the stabilizing and destabilizing effects acting on ARG within
the biofilm need to be researched in greater detail. Significant differences between the closely
related Enterobacteriaceae species seem to point out the dilemma of E. coli as a solely model
organism for environmental long term effects. Klebsiella spp. and their associated ARGs are facing a
different selective pressure when encountering the native environmental populations. Finally, the
results of the annual sampling campaign suggest that single environmental differences have a higher
impact than seasonal events.
PB  - Austrian Committee - International Association for Danube Research
C3  - Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
T1  - The Danube's water and biofilms: Antimicrobial resistance in the Enterobacteriaceae populations
SP  - 24
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6593
ER  - 

@conference{
author = "Koller, Michel and Dielacher, Irina and Schachner, Iris and Leopold, Melanie and Jakwerth, Sefan and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Toth, Erika and Savio, Domenico and Farnleitner, Andreas and Kittinger, Clemens and Kirschner, Alexander and Zarfel, Gernot",
year = "2023",
abstract = "Human induced antibiotic resistant bacteria (ARB) are not only found in clinical surroundings: large
rivers are of great concern as regards their spreading. This ongoing study´s aim is to analyse the
major propagation pathways and sources of ARB in the Danube, and to compare the results with
data obtained in 2013. Escherichia coli and Klebsiella spp. isolated during the 4th Joint Danube
Survey (2019) were tested for their antibiotic susceptibility. 22.24% of 1700 E. coli were resistant and
12.35% were multiresistant. 15.23 % of 696 Klebsiella spp. were resistant and 1.15% were
multiresistant. In comparison the data of 2013 and 2019 of both Enterobacteriaceae showed that the
wild type is still predominant. There were significant increases especially to fluoroquinolones and
augmentin and a significant decrease of resistances to tetracycline. However, the data of JDS4
showed a significant difference between E. coli and Klebsiella spp. regarding wild type, resistance and
multiresistance. Additionally, data of 1155 E. coli showed no seasonal trends in Austria during an
annual sampling. The comparison of E. coli from biofilms and corresponding water samples revealed
several significant differences between the compartments. In conclusion, the preliminary data of E.
coli from biofilm samples suggest that the biofilm as a stable colonization within waters reflects
especially the long term situation. Thus, the stabilizing and destabilizing effects acting on ARG within
the biofilm need to be researched in greater detail. Significant differences between the closely
related Enterobacteriaceae species seem to point out the dilemma of E. coli as a solely model
organism for environmental long term effects. Klebsiella spp. and their associated ARGs are facing a
different selective pressure when encountering the native environmental populations. Finally, the
results of the annual sampling campaign suggest that single environmental differences have a higher
impact than seasonal events.",
publisher = "Austrian Committee - International Association for Danube Research",
journal = "Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria",
title = "The Danube's water and biofilms: Antimicrobial resistance in the Enterobacteriaceae populations",
pages = "24",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6593"
}

Koller, M., Dielacher, I., Schachner, I., Leopold, M., Jakwerth, S., Kolarević, S., Kračun-Kolarević, M., Toth, E., Savio, D., Farnleitner, A., Kittinger, C., Kirschner, A.,& Zarfel, G.. (2023). The Danube's water and biofilms: Antimicrobial resistance in the Enterobacteriaceae populations. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
Austrian Committee - International Association for Danube Research., 24.
https://hdl.handle.net/21.15107/rcub_ibiss_6593

Koller M, Dielacher I, Schachner I, Leopold M, Jakwerth S, Kolarević S, Kračun-Kolarević M, Toth E, Savio D, Farnleitner A, Kittinger C, Kirschner A, Zarfel G. The Danube's water and biofilms: Antimicrobial resistance in the Enterobacteriaceae populations. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. 2023;:24.
https://hdl.handle.net/21.15107/rcub_ibiss_6593 .

Koller, Michel, Dielacher, Irina, Schachner, Iris, Leopold, Melanie, Jakwerth, Sefan, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Toth, Erika, Savio, Domenico, Farnleitner, Andreas, Kittinger, Clemens, Kirschner, Alexander, Zarfel, Gernot, "The Danube's water and biofilms: Antimicrobial resistance in the Enterobacteriaceae populations" in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria (2023):24,
https://hdl.handle.net/21.15107/rcub_ibiss_6593 .

TY  - CONF
AU  - Schachner-Gröhs, Iris
AU  - Kolm, Claudia
AU  - Vierheilig, Julia
AU  - Leopold, Melanie
AU  - Zarfel, Gernot
AU  - Koller, Michael
AU  - Kittinger, Clemens
AU  - Jakwerth, Stefan
AU  - Linke, Rita
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Toth, Erika
AU  - Farnleitner, Andreas
AU  - Kirschner, Alexander
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6590
AB  - Antimicrobial resistance (AMR) represents one of the top ten global public health threats according
to the WHO. The spread of resistances is no longer limited to clinical settings and the natural
environment, especially aquatic ecosystems, are also strongly involved in the global spread. Holistic
as well as quantitative studies are still scarce. We here present for the first time a large scale study
on the Danube River regarding the distribution of AMR along different faecal pollution patterns.
For this study, samples from an international sampling campaign (Joint Danube Survey 4) as well as
additional seasonal samples were screened for the occurrence and origin of faecal pollution and for
the concentrations of nine representative antibiotic resistance genes (ARGs). In addition to water
samples also river biofilms were monitored to account for both, temporal and permanent river
habitats. Analyses were amended by a set of different cultivation-based and non-cultivation-based
microbiological and environmental data to explain the observed pattern in faecal pollution and ARG
concentrations.
Faecal pollution exists and varied strongly along the whole Danube river; hotspots could be identified
downstream of metropolitan areas at which also substantial concentrations of ARGs could be
detected. Quantifying concentrations of ARGs conferring resistance to different antibiotic classes
revealed strong differences between the different genes. Comparing their presence in water and
biofilm samples, allowed to assess how stably present these genes already are in the Danube River
ecosystem.
Environmental surveys are necessary to establish environmental baselines, to be able to guide future
AMR monitoring as well as to enforce useful management strategies. This integrative study therefore
provides first insights in the antimicrobial resistance situation in the most international river in the
world and second largest river in Europe
PB  - Austrian Committee - International Association for Danube Research
C3  - Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
T1  - Occurrence of antibiotic resistance genes along gradients of faecal pollution in water and biofilm samples from the whole Danube River
SP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6590
ER  - 

@conference{
author = "Schachner-Gröhs, Iris and Kolm, Claudia and Vierheilig, Julia and Leopold, Melanie and Zarfel, Gernot and Koller, Michael and Kittinger, Clemens and Jakwerth, Stefan and Linke, Rita and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Toth, Erika and Farnleitner, Andreas and Kirschner, Alexander",
year = "2023",
abstract = "Antimicrobial resistance (AMR) represents one of the top ten global public health threats according
to the WHO. The spread of resistances is no longer limited to clinical settings and the natural
environment, especially aquatic ecosystems, are also strongly involved in the global spread. Holistic
as well as quantitative studies are still scarce. We here present for the first time a large scale study
on the Danube River regarding the distribution of AMR along different faecal pollution patterns.
For this study, samples from an international sampling campaign (Joint Danube Survey 4) as well as
additional seasonal samples were screened for the occurrence and origin of faecal pollution and for
the concentrations of nine representative antibiotic resistance genes (ARGs). In addition to water
samples also river biofilms were monitored to account for both, temporal and permanent river
habitats. Analyses were amended by a set of different cultivation-based and non-cultivation-based
microbiological and environmental data to explain the observed pattern in faecal pollution and ARG
concentrations.
Faecal pollution exists and varied strongly along the whole Danube river; hotspots could be identified
downstream of metropolitan areas at which also substantial concentrations of ARGs could be
detected. Quantifying concentrations of ARGs conferring resistance to different antibiotic classes
revealed strong differences between the different genes. Comparing their presence in water and
biofilm samples, allowed to assess how stably present these genes already are in the Danube River
ecosystem.
Environmental surveys are necessary to establish environmental baselines, to be able to guide future
AMR monitoring as well as to enforce useful management strategies. This integrative study therefore
provides first insights in the antimicrobial resistance situation in the most international river in the
world and second largest river in Europe",
publisher = "Austrian Committee - International Association for Danube Research",
journal = "Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria",
title = "Occurrence of antibiotic resistance genes along gradients of faecal pollution in water and biofilm samples from the whole Danube River",
pages = "25",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6590"
}

Schachner-Gröhs, I., Kolm, C., Vierheilig, J., Leopold, M., Zarfel, G., Koller, M., Kittinger, C., Jakwerth, S., Linke, R., Kolarević, S., Kračun-Kolarević, M., Toth, E., Farnleitner, A.,& Kirschner, A.. (2023). Occurrence of antibiotic resistance genes along gradients of faecal pollution in water and biofilm samples from the whole Danube River. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
Austrian Committee - International Association for Danube Research., 25.
https://hdl.handle.net/21.15107/rcub_ibiss_6590

Schachner-Gröhs I, Kolm C, Vierheilig J, Leopold M, Zarfel G, Koller M, Kittinger C, Jakwerth S, Linke R, Kolarević S, Kračun-Kolarević M, Toth E, Farnleitner A, Kirschner A. Occurrence of antibiotic resistance genes along gradients of faecal pollution in water and biofilm samples from the whole Danube River. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. 2023;:25.
https://hdl.handle.net/21.15107/rcub_ibiss_6590 .

Schachner-Gröhs, Iris, Kolm, Claudia, Vierheilig, Julia, Leopold, Melanie, Zarfel, Gernot, Koller, Michael, Kittinger, Clemens, Jakwerth, Stefan, Linke, Rita, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Toth, Erika, Farnleitner, Andreas, Kirschner, Alexander, "Occurrence of antibiotic resistance genes along gradients of faecal pollution in water and biofilm samples from the whole Danube River" in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria (2023):25,
https://hdl.handle.net/21.15107/rcub_ibiss_6590 .

TY  - CONF
AU  - Stanković, Jelena
AU  - Paunović, Momir
AU  - Milošević, Đurađ
AU  - Lončarević, Davor
AU  - Radulović, Katarina
AU  - Kolarević, Stoimir
AU  - Tomović, Jelena
AU  - Raković, Maja
PY  - 2023
UR  - https://www.oen-iad.org/congress2023/documents/conference%20book_44th_iad%20conference_2023.pdf
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6478
AB  - During the Joint Danube Survey 4 in 2019, we investigated plastic debris in Danube River, from Germany to the Black Sea (more than 2,000 km of the river stretch). The main aim of the study was to categorize and to quantify microplastic particles in living systems. Freshwater Asian clams Corbicula fluminea (Müller, 1774) was used as test organism. Individuals were collected from 23 sites using a hand net (ap. 25 cm× 25 cm, mesh size 500 μm). In order to isolate plastic particles, the samples were digested by alkaline method, using a KOH 10% solution and incubation at 65 ⁰C for 12 h. The digested samples were filtrated through a glass microfiber filters, with 0.5 µm mesh size. Collected particles were photographed and categorized based on the size and coloration. Particles were counted manually, photographed using Nikon SMZ 745T Stereomicroscope and measured in program ImageJ. In 216 examined specimens a total of 1,998 microplastic particles were isolated with an average of 5.59 ± 3.71 fibrils and 4.37 ± 2.46 fragments per organism; or 40.77 ± 73.75 fibrils and 25.84 ± 33.17 fragments per g body weight. Dominant microplastic particles were between 0.4 and 0.5 mm in diameter (characterized as medium-sized), with an average length 0.43 mm ± 0.26 in the Danube and 0.49 mm ± 0.26 in the tributaries. In order to confirm chemical composition of isolated microliter, 46 particles of the hard plastic from 14 sampling sites were analyzed using Nicolet iN10 Fourier transform infrared microscope with micro ATR accessory and cooled MCT detector, using 128 scans at resolution of 4 cm1 . Analyses revealed presence of five different types of polymers, with the domination of polyethylene-terephthalate.
PB  - Austrian Committee - International Association for Danube Research
C3  - Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
T1  - Isolation of microplastics from freshwater Asian clams Corbicula fluminea (Müller, 1774) in the Danube River
SP  - 21
EP  - 21
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6478
ER  - 

@conference{
author = "Stanković, Jelena and Paunović, Momir and Milošević, Đurađ and Lončarević, Davor and Radulović, Katarina and Kolarević, Stoimir and Tomović, Jelena and Raković, Maja",
year = "2023",
abstract = "During the Joint Danube Survey 4 in 2019, we investigated plastic debris in Danube River, from Germany to the Black Sea (more than 2,000 km of the river stretch). The main aim of the study was to categorize and to quantify microplastic particles in living systems. Freshwater Asian clams Corbicula fluminea (Müller, 1774) was used as test organism. Individuals were collected from 23 sites using a hand net (ap. 25 cm× 25 cm, mesh size 500 μm). In order to isolate plastic particles, the samples were digested by alkaline method, using a KOH 10% solution and incubation at 65 ⁰C for 12 h. The digested samples were filtrated through a glass microfiber filters, with 0.5 µm mesh size. Collected particles were photographed and categorized based on the size and coloration. Particles were counted manually, photographed using Nikon SMZ 745T Stereomicroscope and measured in program ImageJ. In 216 examined specimens a total of 1,998 microplastic particles were isolated with an average of 5.59 ± 3.71 fibrils and 4.37 ± 2.46 fragments per organism; or 40.77 ± 73.75 fibrils and 25.84 ± 33.17 fragments per g body weight. Dominant microplastic particles were between 0.4 and 0.5 mm in diameter (characterized as medium-sized), with an average length 0.43 mm ± 0.26 in the Danube and 0.49 mm ± 0.26 in the tributaries. In order to confirm chemical composition of isolated microliter, 46 particles of the hard plastic from 14 sampling sites were analyzed using Nicolet iN10 Fourier transform infrared microscope with micro ATR accessory and cooled MCT detector, using 128 scans at resolution of 4 cm1 . Analyses revealed presence of five different types of polymers, with the domination of polyethylene-terephthalate.",
publisher = "Austrian Committee - International Association for Danube Research",
journal = "Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria",
title = "Isolation of microplastics from freshwater Asian clams Corbicula fluminea (Müller, 1774) in the Danube River",
pages = "21-21",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6478"
}

Stanković, J., Paunović, M., Milošević, Đ., Lončarević, D., Radulović, K., Kolarević, S., Tomović, J.,& Raković, M.. (2023). Isolation of microplastics from freshwater Asian clams Corbicula fluminea (Müller, 1774) in the Danube River. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria
Austrian Committee - International Association for Danube Research., 21-21.
https://hdl.handle.net/21.15107/rcub_ibiss_6478

Stanković J, Paunović M, Milošević Đ, Lončarević D, Radulović K, Kolarević S, Tomović J, Raković M. Isolation of microplastics from freshwater Asian clams Corbicula fluminea (Müller, 1774) in the Danube River. in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. 2023;:21-21.
https://hdl.handle.net/21.15107/rcub_ibiss_6478 .

Stanković, Jelena, Paunović, Momir, Milošević, Đurađ, Lončarević, Davor, Radulović, Katarina, Kolarević, Stoimir, Tomović, Jelena, Raković, Maja, "Isolation of microplastics from freshwater Asian clams Corbicula fluminea (Müller, 1774) in the Danube River" in Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria (2023):21-21,
https://hdl.handle.net/21.15107/rcub_ibiss_6478 .

TY  - JOUR
AU  - Takodi, Nada
AU  - Drobac Backović, Damjana
AU  - Marinović, Zoran
AU  - Sunjog, Karolina
AU  - Jovanović Marić, Jovana
AU  - Kolarević, Stoimir
AU  - Kitanović, Nevena
AU  - Vuković-Gačić, Branka
AU  - Lujić, Jelena
AU  - Svirčev, Zorica
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6464
AB  - Lake Ludaš is a protected nature reserve in Serbia that has been the focus of scientific interest, due to
perpetual water quality deterioration that has led to consistent cyanobacterial blooms for almost five decades. To describe the possible effects of cyanotoxins on fish (Carrasius gibelio) inhabiting Lake Ludaš, several examinations were performed in November of 2018, including: assessment of water quality (physical and chemical parameters, as well as water microbiology), and assessment of several tissues of C. gibelio (micronucleus test, comet assay, and histopathological analyses). The water quality of Lake Ludaš has been categorized as class III, indicating moderate pollution. Physical and chemical parameters from November of 2018 seemed to be within acceptable levels. Examined fish tissues showed signs of DNA damage (highest in the blood, followed by the liver and gills), and histological alterations (in the liver
and gills). Although other xenobiotics can induce similar changes, cyanotoxins could be the most likely cause of the observed alterations in C. gibelio tissues. The present study demonstrates the need to monitor this important wetland of international significance, since the living organisms in Lake Ludaš are showing signs of environmental stress suggesting that the preservation and natural balance of this ecosystem could be in danger.
PB  - Novi Sad : Faculty of Sciences, Department of Biology and Ecology
T2  - Biologia Serbica
T1  - Harmful effects of cyanobacterial blooms in Lake Ludaš (Serbia) on Carassius gibelio tissues
IS  - 1
VL  - 45
DO  - 10.5281/zenodo.8304662
SP  - 3
EP  - 9
ER  - 

@article{
author = "Takodi, Nada and Drobac Backović, Damjana and Marinović, Zoran and Sunjog, Karolina and Jovanović Marić, Jovana and Kolarević, Stoimir and Kitanović, Nevena and Vuković-Gačić, Branka and Lujić, Jelena and Svirčev, Zorica",
year = "2023",
abstract = "Lake Ludaš is a protected nature reserve in Serbia that has been the focus of scientific interest, due to
perpetual water quality deterioration that has led to consistent cyanobacterial blooms for almost five decades. To describe the possible effects of cyanotoxins on fish (Carrasius gibelio) inhabiting Lake Ludaš, several examinations were performed in November of 2018, including: assessment of water quality (physical and chemical parameters, as well as water microbiology), and assessment of several tissues of C. gibelio (micronucleus test, comet assay, and histopathological analyses). The water quality of Lake Ludaš has been categorized as class III, indicating moderate pollution. Physical and chemical parameters from November of 2018 seemed to be within acceptable levels. Examined fish tissues showed signs of DNA damage (highest in the blood, followed by the liver and gills), and histological alterations (in the liver
and gills). Although other xenobiotics can induce similar changes, cyanotoxins could be the most likely cause of the observed alterations in C. gibelio tissues. The present study demonstrates the need to monitor this important wetland of international significance, since the living organisms in Lake Ludaš are showing signs of environmental stress suggesting that the preservation and natural balance of this ecosystem could be in danger.",
publisher = "Novi Sad : Faculty of Sciences, Department of Biology and Ecology",
journal = "Biologia Serbica",
title = "Harmful effects of cyanobacterial blooms in Lake Ludaš (Serbia) on Carassius gibelio tissues",
number = "1",
volume = "45",
doi = "10.5281/zenodo.8304662",
pages = "3-9"
}

Takodi, N., Drobac Backović, D., Marinović, Z., Sunjog, K., Jovanović Marić, J., Kolarević, S., Kitanović, N., Vuković-Gačić, B., Lujić, J.,& Svirčev, Z.. (2023). Harmful effects of cyanobacterial blooms in Lake Ludaš (Serbia) on Carassius gibelio tissues. in Biologia Serbica
Novi Sad : Faculty of Sciences, Department of Biology and Ecology., 45(1), 3-9.
https://doi.org/10.5281/zenodo.8304662

Takodi N, Drobac Backović D, Marinović Z, Sunjog K, Jovanović Marić J, Kolarević S, Kitanović N, Vuković-Gačić B, Lujić J, Svirčev Z. Harmful effects of cyanobacterial blooms in Lake Ludaš (Serbia) on Carassius gibelio tissues. in Biologia Serbica. 2023;45(1):3-9.
doi:10.5281/zenodo.8304662 .

Takodi, Nada, Drobac Backović, Damjana, Marinović, Zoran, Sunjog, Karolina, Jovanović Marić, Jovana, Kolarević, Stoimir, Kitanović, Nevena, Vuković-Gačić, Branka, Lujić, Jelena, Svirčev, Zorica, "Harmful effects of cyanobacterial blooms in Lake Ludaš (Serbia) on Carassius gibelio tissues" in Biologia Serbica, 45, no. 1 (2023):3-9,
https://doi.org/10.5281/zenodo.8304662 . .

TY  - JOUR
AU  - Jovanović Marić, Jovana
AU  - Kolarević, Stoimir
AU  - Đorđević, Jelena
AU  - Sunjog, Karolina
AU  - Nikolić, Ivan
AU  - Marić, Ana
AU  - Ilić, Marija
AU  - Simonović, Predrag
AU  - Alygizakis, Nikiforos
AU  - Ng, Kelsey
AU  - Oswald, Peter
AU  - Slobodnik, Jaroslav
AU  - Žegura, Bojana
AU  - Vuković-Gačić, Branka
AU  - Paunović, Momir
AU  - Kračun-Kolarević, Margareta
PY  - 2023
UR  - https://academic.oup.com/mutage/advance-article/doi/10.1093/mutage/geac024/6823671
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5243
AB  - Environmental studies which aim to assess the ecological impact of chemical and other types of pollution should employ a complex weight-of-evidence approach with multiple lines of evidence (LoEs). This study focused on in situ genotoxicological methods such as the comet and micronucleus assays and randomly amplified polymorphic DNA analysis as one of the multiple LoEs (LoE3) on the fish species Alburnus alburnus (bleak) as a bioindicator. The study was carried out within the Joint Danube Survey 4 (JDS4) at nine sites in the Danube River Basin in the Republic of Serbia. Out of nine sampling sites, two were situated at the Tisa, Sava, and Velika Morava rivers, and three sites were at the Danube River. The three additionally employed LoEs were: SumTUwater calculated based on the monitoring data in the database of the Serbian Environmental Protection Agency (SEPA) (LoE1); in vitro analyses of JDS4 water extracts employing genotoxicological methods (LoE2); assessment of the ecological status/potential by SEPA and indication of the ecological status for the sites performed within the JDS4 (LoE4). The analyzed biomarker responses in the bleak were integrated into the unique integrated biomarker response index which was used to rank the sites. The highest pollution pressure was recorded at JDS4 39 and JDS4 36, while the lowest was at JDS4 35. The impact of pollution was confirmed at three sites, JDS4 33, 40, and 41, by all four LoEs. At other sampling sites, a difference was observed regarding the pollution depending on the employed LoEs. This indicates the importance of implementing a comprehensive weight-of-evidence approach to ensure the impact of pollution is not overlooked when using only one LoE as is often the case in environmental studies.
PB  - Oxford: Oxford University Press
T2  - Mutagenesis
T1  - In situ detection of the genotoxic potential as one of the lines of evidence in the weight-of-evidence approach—the Joint Danube Survey 4 Case Study
IS  - 1
VL  - 38
DO  - 10.1093/mutage/geac024
SP  - 21
EP  - 32
ER  - 

@article{
author = "Jovanović Marić, Jovana and Kolarević, Stoimir and Đorđević, Jelena and Sunjog, Karolina and Nikolić, Ivan and Marić, Ana and Ilić, Marija and Simonović, Predrag and Alygizakis, Nikiforos and Ng, Kelsey and Oswald, Peter and Slobodnik, Jaroslav and Žegura, Bojana and Vuković-Gačić, Branka and Paunović, Momir and Kračun-Kolarević, Margareta",
year = "2023",
abstract = "Environmental studies which aim to assess the ecological impact of chemical and other types of pollution should employ a complex weight-of-evidence approach with multiple lines of evidence (LoEs). This study focused on in situ genotoxicological methods such as the comet and micronucleus assays and randomly amplified polymorphic DNA analysis as one of the multiple LoEs (LoE3) on the fish species Alburnus alburnus (bleak) as a bioindicator. The study was carried out within the Joint Danube Survey 4 (JDS4) at nine sites in the Danube River Basin in the Republic of Serbia. Out of nine sampling sites, two were situated at the Tisa, Sava, and Velika Morava rivers, and three sites were at the Danube River. The three additionally employed LoEs were: SumTUwater calculated based on the monitoring data in the database of the Serbian Environmental Protection Agency (SEPA) (LoE1); in vitro analyses of JDS4 water extracts employing genotoxicological methods (LoE2); assessment of the ecological status/potential by SEPA and indication of the ecological status for the sites performed within the JDS4 (LoE4). The analyzed biomarker responses in the bleak were integrated into the unique integrated biomarker response index which was used to rank the sites. The highest pollution pressure was recorded at JDS4 39 and JDS4 36, while the lowest was at JDS4 35. The impact of pollution was confirmed at three sites, JDS4 33, 40, and 41, by all four LoEs. At other sampling sites, a difference was observed regarding the pollution depending on the employed LoEs. This indicates the importance of implementing a comprehensive weight-of-evidence approach to ensure the impact of pollution is not overlooked when using only one LoE as is often the case in environmental studies.",
publisher = "Oxford: Oxford University Press",
journal = "Mutagenesis",
title = "In situ detection of the genotoxic potential as one of the lines of evidence in the weight-of-evidence approach—the Joint Danube Survey 4 Case Study",
number = "1",
volume = "38",
doi = "10.1093/mutage/geac024",
pages = "21-32"
}

Jovanović Marić, J., Kolarević, S., Đorđević, J., Sunjog, K., Nikolić, I., Marić, A., Ilić, M., Simonović, P., Alygizakis, N., Ng, K., Oswald, P., Slobodnik, J., Žegura, B., Vuković-Gačić, B., Paunović, M.,& Kračun-Kolarević, M.. (2023). In situ detection of the genotoxic potential as one of the lines of evidence in the weight-of-evidence approach—the Joint Danube Survey 4 Case Study. in Mutagenesis
Oxford: Oxford University Press., 38(1), 21-32.
https://doi.org/10.1093/mutage/geac024

Jovanović Marić J, Kolarević S, Đorđević J, Sunjog K, Nikolić I, Marić A, Ilić M, Simonović P, Alygizakis N, Ng K, Oswald P, Slobodnik J, Žegura B, Vuković-Gačić B, Paunović M, Kračun-Kolarević M. In situ detection of the genotoxic potential as one of the lines of evidence in the weight-of-evidence approach—the Joint Danube Survey 4 Case Study. in Mutagenesis. 2023;38(1):21-32.
doi:10.1093/mutage/geac024 .

Jovanović Marić, Jovana, Kolarević, Stoimir, Đorđević, Jelena, Sunjog, Karolina, Nikolić, Ivan, Marić, Ana, Ilić, Marija, Simonović, Predrag, Alygizakis, Nikiforos, Ng, Kelsey, Oswald, Peter, Slobodnik, Jaroslav, Žegura, Bojana, Vuković-Gačić, Branka, Paunović, Momir, Kračun-Kolarević, Margareta, "In situ detection of the genotoxic potential as one of the lines of evidence in the weight-of-evidence approach—the Joint Danube Survey 4 Case Study" in Mutagenesis, 38, no. 1 (2023):21-32,
https://doi.org/10.1093/mutage/geac024 . .

TY  - JOUR
AU  - Rehm, Carmen
AU  - Lippert, Kathrin
AU  - Indra, Alexander
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Leopold, Melanie
AU  - Steinbacher, Sophia
AU  - Schachner, Iris
AU  - Campostrini, Lena
AU  - Risslegger, Alexandra
AU  - Farnleitner, Andreas H.
AU  - Kolm, Claudia
AU  - Kirschner, Alexander K T
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5485
AB  - Vibrio cholerae are natural inhabitants of specific aquatic environments. Strains not belonging to serogroups O1 and O139 are usually unable to produce cholera toxin and cause cholera. However, non-toxigenic V. cholerae (NTVC) are able to cause a variety of mild-to-severe human infections (via seafood consumption or recreational activities). The number of unreported cases is considered substantial, as NTVC infections are not notifiable and physicians are mostly unaware of this pathogen. In the northern hemisphere, NTVC infections have been reported to increase due to global warming. In Eastern Europe, climatic and geological conditions favour the existence of inland water-bodies harbouring NTVC. We thus investigated the occurrence of NTVC in nine Serbian natural and artificial lakes and ponds, many of them used for fishing and bathing. With the exception of one highly saline lake, all investigated water-bodies harboured NTVC, ranging from 5.4 × 101 to 1.86 × 104 CFU and 4.5 × 102 to 5.6 × 106 genomic units per 100 ml. The maximum values observed were in the range of bathing waters in other countries, where infections have been reported. Interestingly, 7 out of 39 fully sequenced presumptive V. cholerae isolates were assigned as V. paracholerae, a recently described sister species of V. cholerae. Some clones and sublineages of both V. cholerae and V. paracholerae were shared by different environments indicating an exchange of strains over long distances. Important pathogenicity factors such as hlyA, toxR, and ompU were present in both species. Seasonal monitoring of ponds/lakes used for recreation in Serbia is thus recommended to be prepared for potential occurrence of infections promoted by climate change-induced rise in water temperatures.
PB  - Hoboken: Wiley
T2  - Environmental Microbiology Reports
T1  - First report on the occurrence of Vibrio cholerae nonO1/nonO139 in natural and artificial lakes and ponds in Serbia: Evidence for a long-distance transfer of strains and the presence of Vibrio paracholerae
DO  - 10.1111/1758-2229.13136
ER  - 

@article{
author = "Rehm, Carmen and Lippert, Kathrin and Indra, Alexander and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Leopold, Melanie and Steinbacher, Sophia and Schachner, Iris and Campostrini, Lena and Risslegger, Alexandra and Farnleitner, Andreas H. and Kolm, Claudia and Kirschner, Alexander K T",
year = "2023",
abstract = "Vibrio cholerae are natural inhabitants of specific aquatic environments. Strains not belonging to serogroups O1 and O139 are usually unable to produce cholera toxin and cause cholera. However, non-toxigenic V. cholerae (NTVC) are able to cause a variety of mild-to-severe human infections (via seafood consumption or recreational activities). The number of unreported cases is considered substantial, as NTVC infections are not notifiable and physicians are mostly unaware of this pathogen. In the northern hemisphere, NTVC infections have been reported to increase due to global warming. In Eastern Europe, climatic and geological conditions favour the existence of inland water-bodies harbouring NTVC. We thus investigated the occurrence of NTVC in nine Serbian natural and artificial lakes and ponds, many of them used for fishing and bathing. With the exception of one highly saline lake, all investigated water-bodies harboured NTVC, ranging from 5.4 × 101 to 1.86 × 104 CFU and 4.5 × 102 to 5.6 × 106 genomic units per 100 ml. The maximum values observed were in the range of bathing waters in other countries, where infections have been reported. Interestingly, 7 out of 39 fully sequenced presumptive V. cholerae isolates were assigned as V. paracholerae, a recently described sister species of V. cholerae. Some clones and sublineages of both V. cholerae and V. paracholerae were shared by different environments indicating an exchange of strains over long distances. Important pathogenicity factors such as hlyA, toxR, and ompU were present in both species. Seasonal monitoring of ponds/lakes used for recreation in Serbia is thus recommended to be prepared for potential occurrence of infections promoted by climate change-induced rise in water temperatures.",
publisher = "Hoboken: Wiley",
journal = "Environmental Microbiology Reports",
title = "First report on the occurrence of Vibrio cholerae nonO1/nonO139 in natural and artificial lakes and ponds in Serbia: Evidence for a long-distance transfer of strains and the presence of Vibrio paracholerae",
doi = "10.1111/1758-2229.13136"
}

Rehm, C., Lippert, K., Indra, A., Kolarević, S., Kračun-Kolarević, M., Leopold, M., Steinbacher, S., Schachner, I., Campostrini, L., Risslegger, A., Farnleitner, A. H., Kolm, C.,& Kirschner, A. K. T.. (2023). First report on the occurrence of Vibrio cholerae nonO1/nonO139 in natural and artificial lakes and ponds in Serbia: Evidence for a long-distance transfer of strains and the presence of Vibrio paracholerae. in Environmental Microbiology Reports
Hoboken: Wiley..
https://doi.org/10.1111/1758-2229.13136

Rehm C, Lippert K, Indra A, Kolarević S, Kračun-Kolarević M, Leopold M, Steinbacher S, Schachner I, Campostrini L, Risslegger A, Farnleitner AH, Kolm C, Kirschner AKT. First report on the occurrence of Vibrio cholerae nonO1/nonO139 in natural and artificial lakes and ponds in Serbia: Evidence for a long-distance transfer of strains and the presence of Vibrio paracholerae. in Environmental Microbiology Reports. 2023;.
doi:10.1111/1758-2229.13136 .

Rehm, Carmen, Lippert, Kathrin, Indra, Alexander, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Leopold, Melanie, Steinbacher, Sophia, Schachner, Iris, Campostrini, Lena, Risslegger, Alexandra, Farnleitner, Andreas H., Kolm, Claudia, Kirschner, Alexander K T, "First report on the occurrence of Vibrio cholerae nonO1/nonO139 in natural and artificial lakes and ponds in Serbia: Evidence for a long-distance transfer of strains and the presence of Vibrio paracholerae" in Environmental Microbiology Reports (2023),
https://doi.org/10.1111/1758-2229.13136 . .

TY  - JOUR
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Đorđević, Jelena
AU  - Vuković-Gačić, Branka
AU  - Joksimović, Danijela
AU  - Martinović, Rajko
AU  - Bajt, Oliver
AU  - Ramšak, Andreja
PY  - 2023
UR  - https://academic.oup.com/mutage/advance-article/doi/10.1093/mutage/geac017/6694788
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5121
AB  - In this study, the possible 'vector effect' within the exposure of Mediterranean mussels (Mytilus galloprovincialis) to polystyrene microplastics with adsorbed fluoranthene was investigated by applying the multibiomarker approach. The major focus was placed on genotoxicological endpoints as to our knowledge there are no literature data on the genotoxicity of polystyrene microparticles alone or with adsorbed fluoranthene in the selected experimental organisms. DNA damage was assessed in haemocytes by comet assay and micronucleus test. For the assessment of neurotoxicity, acetylcholinesterase activity was measured in gills. Glutathione S-transferase was assessed in gills and hepatopancreas since these enzymes are induced for biotransformation and excretion of lipophilic compounds such as hydrocarbons. Finally, differences in physiological response within the exposure to polystyrene particles, fluoranthene, or particles with adsorbed fluoranthene were assessed by the variation of heart rate patterns studied by the noninvasive laser fibre-optic method. The uniform response of individual biomarkers within the exposure groups was not recorded. There was no clear pattern in variation of acetylcholinesterase or glutathione S-transferase activity which could be attributed to the treatment. Exposure to polystyrene increased DNA damage which was detected by the comet assay but was not confirmed by micronucleus formation. Data of genotoxicity assays indicated differential responses among the groups exposed to fluoranthene alone and fluoranthene adsorbed to polystyrene. Change in the heart rate patterns within the studied groups supports the concept of the Trojan horse effect within the exposure to polystyrene particles with adsorbed fluoranthene.
PB  - Oxford: Oxford University Press
T2  - Mutagenesis
T1  - Single and combined potential of polystyrene microparticles and fluoranthene in the induction of DNA damage in haemocytes of Mediterranean mussel (Mytilus galloprovincialis).
IS  - 1
VL  - 38
DO  - 10.1093/mutage/geac017
SP  - 3
EP  - 12
ER  - 

@article{
author = "Kolarević, Stoimir and Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Đorđević, Jelena and Vuković-Gačić, Branka and Joksimović, Danijela and Martinović, Rajko and Bajt, Oliver and Ramšak, Andreja",
year = "2023",
abstract = "In this study, the possible 'vector effect' within the exposure of Mediterranean mussels (Mytilus galloprovincialis) to polystyrene microplastics with adsorbed fluoranthene was investigated by applying the multibiomarker approach. The major focus was placed on genotoxicological endpoints as to our knowledge there are no literature data on the genotoxicity of polystyrene microparticles alone or with adsorbed fluoranthene in the selected experimental organisms. DNA damage was assessed in haemocytes by comet assay and micronucleus test. For the assessment of neurotoxicity, acetylcholinesterase activity was measured in gills. Glutathione S-transferase was assessed in gills and hepatopancreas since these enzymes are induced for biotransformation and excretion of lipophilic compounds such as hydrocarbons. Finally, differences in physiological response within the exposure to polystyrene particles, fluoranthene, or particles with adsorbed fluoranthene were assessed by the variation of heart rate patterns studied by the noninvasive laser fibre-optic method. The uniform response of individual biomarkers within the exposure groups was not recorded. There was no clear pattern in variation of acetylcholinesterase or glutathione S-transferase activity which could be attributed to the treatment. Exposure to polystyrene increased DNA damage which was detected by the comet assay but was not confirmed by micronucleus formation. Data of genotoxicity assays indicated differential responses among the groups exposed to fluoranthene alone and fluoranthene adsorbed to polystyrene. Change in the heart rate patterns within the studied groups supports the concept of the Trojan horse effect within the exposure to polystyrene particles with adsorbed fluoranthene.",
publisher = "Oxford: Oxford University Press",
journal = "Mutagenesis",
title = "Single and combined potential of polystyrene microparticles and fluoranthene in the induction of DNA damage in haemocytes of Mediterranean mussel (Mytilus galloprovincialis).",
number = "1",
volume = "38",
doi = "10.1093/mutage/geac017",
pages = "3-12"
}

Kolarević, S., Kračun-Kolarević, M., Jovanović Marić, J., Đorđević, J., Vuković-Gačić, B., Joksimović, D., Martinović, R., Bajt, O.,& Ramšak, A.. (2023). Single and combined potential of polystyrene microparticles and fluoranthene in the induction of DNA damage in haemocytes of Mediterranean mussel (Mytilus galloprovincialis).. in Mutagenesis
Oxford: Oxford University Press., 38(1), 3-12.
https://doi.org/10.1093/mutage/geac017

Kolarević S, Kračun-Kolarević M, Jovanović Marić J, Đorđević J, Vuković-Gačić B, Joksimović D, Martinović R, Bajt O, Ramšak A. Single and combined potential of polystyrene microparticles and fluoranthene in the induction of DNA damage in haemocytes of Mediterranean mussel (Mytilus galloprovincialis).. in Mutagenesis. 2023;38(1):3-12.
doi:10.1093/mutage/geac017 .

Kolarević, Stoimir, Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Đorđević, Jelena, Vuković-Gačić, Branka, Joksimović, Danijela, Martinović, Rajko, Bajt, Oliver, Ramšak, Andreja, "Single and combined potential of polystyrene microparticles and fluoranthene in the induction of DNA damage in haemocytes of Mediterranean mussel (Mytilus galloprovincialis)." in Mutagenesis, 38, no. 1 (2023):3-12,
https://doi.org/10.1093/mutage/geac017 . .

TY  - JOUR
AU  - Ransome, Emma
AU  - Hobbs, Faye
AU  - Jones, Scot
AU  - Coleman, C.M.
AU  - Harris, Danielle N.
AU  - Woodward, Guy
AU  - Bell, Thomas
AU  - Trew, Jahcub
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Savolainen, Vincent
PY  - 2023
UR  - http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=PMC9525188
UR  - https://linkinghub.elsevier.com/retrieve/pii/S004896972206260X
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5234
AB  - The presence of SARS-CoV-2 in untreated sewage has been confirmed in many countries but its incidence and infection risk in contaminated waters is poorly understood. The River Thames in the UK receives untreated sewage from 57 Combined Sewer Overflows (CSOs), with many discharging dozens of times per year. This study investigated if such discharges provide a pathway for environmental transmission of SARS-CoV-2. Samples of wastewater, surface water, and sediment collected close to six CSOs on the River Thames were assayed over eight months for SARS-CoV-2 RNA and infectious virus. Bivalves were also sampled as an indicator species of viral bioaccumulation. Sediment and water samples from the Danube and Sava rivers in Serbia, where raw sewage is also discharged in high volumes, were assayed as a positive control. No evidence of SARS-CoV-2 RNA or infectious virus was found in UK samples, in contrast to RNA positive samples from Serbia. Furthermore, this study shows that infectious SARS-CoV-2 inoculum is stable in Thames water and sediment for <3 days, while SARS-CoV-2 RNA is detectable for at least seven days. This indicates that dilution of wastewater likely limits environmental transmission, and that detection of viral RNA alone is not an indication of pathogen spillover.
PB  - Elsevier B.V.
T2  - Science of The Total Environment
T1  - Evaluating the transmission risk of SARS-CoV-2 from sewage pollution
IS  - Pt 2
VL  - 858
DO  - 10.1016/j.scitotenv.2022.159161
SP  - 159161
ER  - 

@article{
author = "Ransome, Emma and Hobbs, Faye and Jones, Scot and Coleman, C.M. and Harris, Danielle N. and Woodward, Guy and Bell, Thomas and Trew, Jahcub and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Savolainen, Vincent",
year = "2023",
abstract = "The presence of SARS-CoV-2 in untreated sewage has been confirmed in many countries but its incidence and infection risk in contaminated waters is poorly understood. The River Thames in the UK receives untreated sewage from 57 Combined Sewer Overflows (CSOs), with many discharging dozens of times per year. This study investigated if such discharges provide a pathway for environmental transmission of SARS-CoV-2. Samples of wastewater, surface water, and sediment collected close to six CSOs on the River Thames were assayed over eight months for SARS-CoV-2 RNA and infectious virus. Bivalves were also sampled as an indicator species of viral bioaccumulation. Sediment and water samples from the Danube and Sava rivers in Serbia, where raw sewage is also discharged in high volumes, were assayed as a positive control. No evidence of SARS-CoV-2 RNA or infectious virus was found in UK samples, in contrast to RNA positive samples from Serbia. Furthermore, this study shows that infectious SARS-CoV-2 inoculum is stable in Thames water and sediment for <3 days, while SARS-CoV-2 RNA is detectable for at least seven days. This indicates that dilution of wastewater likely limits environmental transmission, and that detection of viral RNA alone is not an indication of pathogen spillover.",
publisher = "Elsevier B.V.",
journal = "Science of The Total Environment",
title = "Evaluating the transmission risk of SARS-CoV-2 from sewage pollution",
number = "Pt 2",
volume = "858",
doi = "10.1016/j.scitotenv.2022.159161",
pages = "159161"
}

Ransome, E., Hobbs, F., Jones, S., Coleman, C.M., Harris, D. N., Woodward, G., Bell, T., Trew, J., Kolarević, S., Kračun-Kolarević, M.,& Savolainen, V.. (2023). Evaluating the transmission risk of SARS-CoV-2 from sewage pollution. in Science of The Total Environment
Elsevier B.V.., 858(Pt 2), 159161.
https://doi.org/10.1016/j.scitotenv.2022.159161

Ransome E, Hobbs F, Jones S, Coleman C, Harris DN, Woodward G, Bell T, Trew J, Kolarević S, Kračun-Kolarević M, Savolainen V. Evaluating the transmission risk of SARS-CoV-2 from sewage pollution. in Science of The Total Environment. 2023;858(Pt 2):159161.
doi:10.1016/j.scitotenv.2022.159161 .

Ransome, Emma, Hobbs, Faye, Jones, Scot, Coleman, C.M., Harris, Danielle N., Woodward, Guy, Bell, Thomas, Trew, Jahcub, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Savolainen, Vincent, "Evaluating the transmission risk of SARS-CoV-2 from sewage pollution" in Science of The Total Environment, 858, no. Pt 2 (2023):159161,
https://doi.org/10.1016/j.scitotenv.2022.159161 . .

TY  - CONF
AU  - Koller, Michael
AU  - Nürnberger, Julia
AU  - Hack, Kerstin
AU  - Dielacher, Irina
AU  - Wachter, Julian
AU  - Hoffer, Benjamin
AU  - Kohlmaier, Sophie
AU  - Hagendorfer, Christin
AU  - Kapic, Medina
AU  - Julia, Gütl
AU  - Arsenijevic, Polina
AU  - Schachner, Iris
AU  - Jakwerth, Stefan
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Tóth, Erika
AU  - Savio, Domenico
AU  - Farnleitner, Andreas H.
AU  - Kittinger, Clemens
AU  - Kirschner, Alexander K.T.
AU  - Zarfel, Gernot
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6231
AB  - Human induced antibiotic resistant bacteria (ARB) are not only found in clinical surroundings: large rivers are of great concern as regards their spreading. This ongoing study´s aim is to analyse the major propagation pathways and sources of ARB in the Danube, and to compare the results with data obtained in 2013. Escherichia coli and Klebsiella spp. isolated during the 4th Joint Danube Survey were tested for their antibiotic susceptibility. 23.2% of 1635 E. coli were resistant and 11.7% were multiresistant. There was a significant increase in resistances to augmentin, moxifloxacin and piperacillin/tazobactam and a significant decrease regarding tetracycline. 23 expressed an extended-spectrum-beta-lactamase phenotype. 15.87 % of 630 Klebsiella spp. were resistant and 0.95% were multiresistant. Resistances
to moxifloxacin and augmentin were the most common resistances detected.
Two isolates showed an ESBL-phenotype, and two isolates were resistant to the last line antibiotic tigecycline. In comparison the data of 2013 and 2019 show a similar proportion for multiresistant E. coli, but regarding resistances to some single antibiotics significant changes were determined. In contrast, the Klebsiella isolates showed a very similar distribution of resistances. Despite, 30% of non-wild type resistant E. coli in the environment is a very high number when compared to clinical settings with approximately 50%. However, the relevance of these findings concerning human health and the environment is yet unclear as there is only a very limited number of studies for comparison and studies on the significance of pathways from the river back to humans are largely missing.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Monitoring non-wild type antibiotic resistant Enterobacteriaceae in the River Danube: a six-year-comparison
SP  - 64
EP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6231
ER  - 

@conference{
author = "Koller, Michael and Nürnberger, Julia and Hack, Kerstin and Dielacher, Irina and Wachter, Julian and Hoffer, Benjamin and Kohlmaier, Sophie and Hagendorfer, Christin and Kapic, Medina and Julia, Gütl and Arsenijevic, Polina and Schachner, Iris and Jakwerth, Stefan and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Tóth, Erika and Savio, Domenico and Farnleitner, Andreas H. and Kittinger, Clemens and Kirschner, Alexander K.T. and Zarfel, Gernot",
year = "2022",
abstract = "Human induced antibiotic resistant bacteria (ARB) are not only found in clinical surroundings: large rivers are of great concern as regards their spreading. This ongoing study´s aim is to analyse the major propagation pathways and sources of ARB in the Danube, and to compare the results with data obtained in 2013. Escherichia coli and Klebsiella spp. isolated during the 4th Joint Danube Survey were tested for their antibiotic susceptibility. 23.2% of 1635 E. coli were resistant and 11.7% were multiresistant. There was a significant increase in resistances to augmentin, moxifloxacin and piperacillin/tazobactam and a significant decrease regarding tetracycline. 23 expressed an extended-spectrum-beta-lactamase phenotype. 15.87 % of 630 Klebsiella spp. were resistant and 0.95% were multiresistant. Resistances
to moxifloxacin and augmentin were the most common resistances detected.
Two isolates showed an ESBL-phenotype, and two isolates were resistant to the last line antibiotic tigecycline. In comparison the data of 2013 and 2019 show a similar proportion for multiresistant E. coli, but regarding resistances to some single antibiotics significant changes were determined. In contrast, the Klebsiella isolates showed a very similar distribution of resistances. Despite, 30% of non-wild type resistant E. coli in the environment is a very high number when compared to clinical settings with approximately 50%. However, the relevance of these findings concerning human health and the environment is yet unclear as there is only a very limited number of studies for comparison and studies on the significance of pathways from the river back to humans are largely missing.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Monitoring non-wild type antibiotic resistant Enterobacteriaceae in the River Danube: a six-year-comparison",
pages = "64-65",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6231"
}

Koller, M., Nürnberger, J., Hack, K., Dielacher, I., Wachter, J., Hoffer, B., Kohlmaier, S., Hagendorfer, C., Kapic, M., Julia, G., Arsenijevic, P., Schachner, I., Jakwerth, S., Kolarević, S., Kračun-Kolarević, M., Tóth, E., Savio, D., Farnleitner, A. H., Kittinger, C., Kirschner, A. K.T.,& Zarfel, G.. (2022). Monitoring non-wild type antibiotic resistant Enterobacteriaceae in the River Danube: a six-year-comparison. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 64-65.
https://hdl.handle.net/21.15107/rcub_ibiss_6231

Koller M, Nürnberger J, Hack K, Dielacher I, Wachter J, Hoffer B, Kohlmaier S, Hagendorfer C, Kapic M, Julia G, Arsenijevic P, Schachner I, Jakwerth S, Kolarević S, Kračun-Kolarević M, Tóth E, Savio D, Farnleitner AH, Kittinger C, Kirschner AK, Zarfel G. Monitoring non-wild type antibiotic resistant Enterobacteriaceae in the River Danube: a six-year-comparison. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:64-65.
https://hdl.handle.net/21.15107/rcub_ibiss_6231 .

Koller, Michael, Nürnberger, Julia, Hack, Kerstin, Dielacher, Irina, Wachter, Julian, Hoffer, Benjamin, Kohlmaier, Sophie, Hagendorfer, Christin, Kapic, Medina, Julia, Gütl, Arsenijevic, Polina, Schachner, Iris, Jakwerth, Stefan, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Tóth, Erika, Savio, Domenico, Farnleitner, Andreas H., Kittinger, Clemens, Kirschner, Alexander K.T., Zarfel, Gernot, "Monitoring non-wild type antibiotic resistant Enterobacteriaceae in the River Danube: a six-year-comparison" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):64-65,
https://hdl.handle.net/21.15107/rcub_ibiss_6231 .

TY  - CONF
AU  - Đorđević, Jelena
AU  - Oalđe Pavlović, Mariana
AU  - Jovanović Marić, Jovana
AU  - Kolarević, Stoimir
AU  - Duletić-Laušević, Sonja
AU  - Vuković-Gačić, Branka
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5729
AB  - BACKGROUND
According to World Health Organization, 70-95% of the population chooses folk medicine as their primary
approach for health maintenance. In addition to their healing properties and application in folk medicine,
Lamiaceae plants are often valued in cookery as spices and food preservatives.
OBJECTIVES
Hence, the aim of this study was to examine the antibiofilm activity of 12 ethanolic extracts of Lamiaceae species
on biofilm formation and the degradation of existing biofilm of Pseudomonas aeruginosa PAO1 (ATCC 15692).
METHODS
The crystal violet staining method was used to evaluate the newly formed bacterial biofilms. Four concentrations
(double dilutions) of plant extracts (starting conc. 2500 μg/mL), solvent control (ethanol, starting conc.15%),
and positive control (streptomycin, starting conc. 12.5 μg/mL) were tested.082
RESULTS
All ethanol extracts showed antibiofilm activity. However, the strongest activity was observed for Hyssopus
officinalis, Melissa officinalis, Mentha piperita, and Ocimum basilicum, where the viability of bacteria in the
biofilm after treatment was about 60% mainly at each tested concentration. Teucrium chamaedrys extract
exhibited the strongest activity by degrading about 60% of biofilm (about 40% viability) at all concentrations
except at the lowest tested one. Promising results were also observed for M. piperita (at each of the tested
concentrations) and O. basilicum (at the highest tested concentration), where the viability of bacteria in the
biofilm after treatment was reduced by about 40%. The remaining extracts showed a slightly lower effect on
the degradation of the previously formed biofilm of P. aeruginosa PAO1.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Do ethanolic extracts of Lamiaceae species used in folk medicine have antibiofilm activity on Pseudomonas aeruginosa PAO1?
SP  - 801
EP  - 802
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5729
ER  - 

@conference{
author = "Đorđević, Jelena and Oalđe Pavlović, Mariana and Jovanović Marić, Jovana and Kolarević, Stoimir and Duletić-Laušević, Sonja and Vuković-Gačić, Branka",
year = "2022",
abstract = "BACKGROUND
According to World Health Organization, 70-95% of the population chooses folk medicine as their primary
approach for health maintenance. In addition to their healing properties and application in folk medicine,
Lamiaceae plants are often valued in cookery as spices and food preservatives.
OBJECTIVES
Hence, the aim of this study was to examine the antibiofilm activity of 12 ethanolic extracts of Lamiaceae species
on biofilm formation and the degradation of existing biofilm of Pseudomonas aeruginosa PAO1 (ATCC 15692).
METHODS
The crystal violet staining method was used to evaluate the newly formed bacterial biofilms. Four concentrations
(double dilutions) of plant extracts (starting conc. 2500 μg/mL), solvent control (ethanol, starting conc.15%),
and positive control (streptomycin, starting conc. 12.5 μg/mL) were tested.082
RESULTS
All ethanol extracts showed antibiofilm activity. However, the strongest activity was observed for Hyssopus
officinalis, Melissa officinalis, Mentha piperita, and Ocimum basilicum, where the viability of bacteria in the
biofilm after treatment was about 60% mainly at each tested concentration. Teucrium chamaedrys extract
exhibited the strongest activity by degrading about 60% of biofilm (about 40% viability) at all concentrations
except at the lowest tested one. Promising results were also observed for M. piperita (at each of the tested
concentrations) and O. basilicum (at the highest tested concentration), where the viability of bacteria in the
biofilm after treatment was reduced by about 40%. The remaining extracts showed a slightly lower effect on
the degradation of the previously formed biofilm of P. aeruginosa PAO1.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Do ethanolic extracts of Lamiaceae species used in folk medicine have antibiofilm activity on Pseudomonas aeruginosa PAO1?",
pages = "801-802",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5729"
}

Đorđević, J., Oalđe Pavlović, M., Jovanović Marić, J., Kolarević, S., Duletić-Laušević, S.,& Vuković-Gačić, B.. (2022). Do ethanolic extracts of Lamiaceae species used in folk medicine have antibiofilm activity on Pseudomonas aeruginosa PAO1?. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 801-802.
https://hdl.handle.net/21.15107/rcub_ibiss_5729

Đorđević J, Oalđe Pavlović M, Jovanović Marić J, Kolarević S, Duletić-Laušević S, Vuković-Gačić B. Do ethanolic extracts of Lamiaceae species used in folk medicine have antibiofilm activity on Pseudomonas aeruginosa PAO1?. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:801-802.
https://hdl.handle.net/21.15107/rcub_ibiss_5729 .

Đorđević, Jelena, Oalđe Pavlović, Mariana, Jovanović Marić, Jovana, Kolarević, Stoimir, Duletić-Laušević, Sonja, Vuković-Gačić, Branka, "Do ethanolic extracts of Lamiaceae species used in folk medicine have antibiofilm activity on Pseudomonas aeruginosa PAO1?" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):801-802,
https://hdl.handle.net/21.15107/rcub_ibiss_5729 .

TY  - CONF
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Oswald, Petar
AU  - Oswaldova, Martina
AU  - Slobodnik, Jaroslav
AU  - Vuković-Gačić, Branka
AU  - Paunović, Momir
AU  - Kološa, Katja
AU  - Žegura, Bojana
AU  - Kolarević, Stoimir
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5725
AB  - Within the Joint Danube Survey 4 (JDS4) (2019) surface water samples
were collected at 24 localities along the Danube River and were extracted by
horizon large volume solid-phase extraction (LVSPE) technique. LVSPE
technique provided 25,000x relative enrichment factor (REF) of the river
samples. The bioactivity of the LVSPE samples was investigated employing
prokaryotic SOS/umuC assay (S9+ and S9-) and battery of bioassays
analyzing different endpoints – cytotoxicity (MTS assay), genotoxicity
(comet assay), cell cycle analyses of ZFL cells and embryo toxicity (zFET) in
eukaryotic models (zebrafish liver cell line – ZFL and Danio rerio embryos –
zebrafish). In the case of the SOS/umuC assay none of the tested samples
(REF100) has induced genotoxic effect. The cytotoxic effect was detected for
11 samples at REF100 (MTS assay). The comet assay results indicated
genotoxic potential for nine samples – one in the Upper Danube, six in the
Middle Danube and two in the Lower Danube. The most potent were
JDS4-37 and JDS4-41 samples collected at two sites in the Serbian part of
the Danube River. These samples were analyzed at REF13. The analysis of
the cell cycle was performed in the case of eight samples for which were
previously recorded genotoxic effect. For one sample (JDS4-41) was found
the G1 phase cell cycle arrest. The zFET assay was performed for all the
samples at REF100 and there was no embryo toxicity or teratogenicity
recorded. The results obtained within this study indicate a higher sensitivity
of eukaryotic models compared to prokaryotic SOS/umuC assay. Likewise, it
was found that most of the genotoxic samples originate from the middle
part of the Danube.
PB  - European Environmental Mutagenesis & Genomics Society
C3  - Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
T1  - Bioactivity of the Joint Danube Survey 4 surface water samples collected by horizon large volume solid–phase extraction technique.
SP  - 75
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5725
ER  - 

@conference{
author = "Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Oswald, Petar and Oswaldova, Martina and Slobodnik, Jaroslav and Vuković-Gačić, Branka and Paunović, Momir and Kološa, Katja and Žegura, Bojana and Kolarević, Stoimir",
year = "2022",
abstract = "Within the Joint Danube Survey 4 (JDS4) (2019) surface water samples
were collected at 24 localities along the Danube River and were extracted by
horizon large volume solid-phase extraction (LVSPE) technique. LVSPE
technique provided 25,000x relative enrichment factor (REF) of the river
samples. The bioactivity of the LVSPE samples was investigated employing
prokaryotic SOS/umuC assay (S9+ and S9-) and battery of bioassays
analyzing different endpoints – cytotoxicity (MTS assay), genotoxicity
(comet assay), cell cycle analyses of ZFL cells and embryo toxicity (zFET) in
eukaryotic models (zebrafish liver cell line – ZFL and Danio rerio embryos –
zebrafish). In the case of the SOS/umuC assay none of the tested samples
(REF100) has induced genotoxic effect. The cytotoxic effect was detected for
11 samples at REF100 (MTS assay). The comet assay results indicated
genotoxic potential for nine samples – one in the Upper Danube, six in the
Middle Danube and two in the Lower Danube. The most potent were
JDS4-37 and JDS4-41 samples collected at two sites in the Serbian part of
the Danube River. These samples were analyzed at REF13. The analysis of
the cell cycle was performed in the case of eight samples for which were
previously recorded genotoxic effect. For one sample (JDS4-41) was found
the G1 phase cell cycle arrest. The zFET assay was performed for all the
samples at REF100 and there was no embryo toxicity or teratogenicity
recorded. The results obtained within this study indicate a higher sensitivity
of eukaryotic models compared to prokaryotic SOS/umuC assay. Likewise, it
was found that most of the genotoxic samples originate from the middle
part of the Danube.",
publisher = "European Environmental Mutagenesis & Genomics Society",
journal = "Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands",
title = "Bioactivity of the Joint Danube Survey 4 surface water samples collected by horizon large volume solid–phase extraction technique.",
pages = "75",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5725"
}

Kračun-Kolarević, M., Jovanović Marić, J., Oswald, P., Oswaldova, M., Slobodnik, J., Vuković-Gačić, B., Paunović, M., Kološa, K., Žegura, B.,& Kolarević, S.. (2022). Bioactivity of the Joint Danube Survey 4 surface water samples collected by horizon large volume solid–phase extraction technique.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
European Environmental Mutagenesis & Genomics Society., 75.
https://hdl.handle.net/21.15107/rcub_ibiss_5725

Kračun-Kolarević M, Jovanović Marić J, Oswald P, Oswaldova M, Slobodnik J, Vuković-Gačić B, Paunović M, Kološa K, Žegura B, Kolarević S. Bioactivity of the Joint Danube Survey 4 surface water samples collected by horizon large volume solid–phase extraction technique.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands. 2022;:75.
https://hdl.handle.net/21.15107/rcub_ibiss_5725 .

Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Oswald, Petar, Oswaldova, Martina, Slobodnik, Jaroslav, Vuković-Gačić, Branka, Paunović, Momir, Kološa, Katja, Žegura, Bojana, Kolarević, Stoimir, "Bioactivity of the Joint Danube Survey 4 surface water samples collected by horizon large volume solid–phase extraction technique." in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands (2022):75,
https://hdl.handle.net/21.15107/rcub_ibiss_5725 .

TY  - CONF
AU  - Oalđe Pavlović, Mariana
AU  - Đorđević, Jelena
AU  - Jovanović Marić, Jovana
AU  - Kolarević, Stoimir
AU  - Duletić-Laušević, Sonja
AU  - Vuković-Gačić, Branka
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5728
AB  - BACKGROUND
The increasing bacterial resistance to antibiotics poses a serious global threat. For that reason, the research into plant-derived antibacterial agents has become progressively more interesting, particularly in regard to their capacity to prevent the delay or inability of wound closure and healing.
OBJECTIVES
The aim of this study was to evaluate i) the antibacterial potential of ethanolic extracts (70% ethanol) of 18
Lamiaceae species against four Gram-negative and three Gram-positive bacterial strains; ii) the effect of these extracts on Pseudomonas aeruginosa PAO1 infection of human lung fibroblasts (MRC-5), and iii) the effect on MRC-5 cell migration.
METHODS
The antibacterial activity was tested by minimal inhibitory concentration (MIC) assay. The effect on bacterial infection of MRC-5 cells was determined using the invasion assay, while the cell migration was assessed with Scratch assay.
RESULTS
The tested Gram-positive bacteria, especially Bacillus subtilis, are more sensitive to the effects of ethanolic extracts than the Gram-negative bacteria. Moreover, the tested extracts significantly inhibited the invasion of Pseudomonas aeruginosa PAO1 during MRC-5 infection, and most of them also displayed promising stimulating potential on MRC-5 migration in a disrupted cell monolayer. Finally, the results of IBR (integrated biomarker response) analysis highlighted Salvia officinalis ethanolic extract as the most active one, which is in accordance with the existing data suggesting that this plant represents an effective antibacterial and wound-healing agent commonly used in traditional medicine. Altogether, these results are expected to foster further studies that will focus on combating bacterial resistance to antibiotics using natural products.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Ethanolic extracts of Lamiaceae species inhibit the bacterial infection of human lung fibroblasts and stimulate cell migration
SP  - 799
EP  - 800
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5728
ER  - 

@conference{
author = "Oalđe Pavlović, Mariana and Đorđević, Jelena and Jovanović Marić, Jovana and Kolarević, Stoimir and Duletić-Laušević, Sonja and Vuković-Gačić, Branka",
year = "2022",
abstract = "BACKGROUND
The increasing bacterial resistance to antibiotics poses a serious global threat. For that reason, the research into plant-derived antibacterial agents has become progressively more interesting, particularly in regard to their capacity to prevent the delay or inability of wound closure and healing.
OBJECTIVES
The aim of this study was to evaluate i) the antibacterial potential of ethanolic extracts (70% ethanol) of 18
Lamiaceae species against four Gram-negative and three Gram-positive bacterial strains; ii) the effect of these extracts on Pseudomonas aeruginosa PAO1 infection of human lung fibroblasts (MRC-5), and iii) the effect on MRC-5 cell migration.
METHODS
The antibacterial activity was tested by minimal inhibitory concentration (MIC) assay. The effect on bacterial infection of MRC-5 cells was determined using the invasion assay, while the cell migration was assessed with Scratch assay.
RESULTS
The tested Gram-positive bacteria, especially Bacillus subtilis, are more sensitive to the effects of ethanolic extracts than the Gram-negative bacteria. Moreover, the tested extracts significantly inhibited the invasion of Pseudomonas aeruginosa PAO1 during MRC-5 infection, and most of them also displayed promising stimulating potential on MRC-5 migration in a disrupted cell monolayer. Finally, the results of IBR (integrated biomarker response) analysis highlighted Salvia officinalis ethanolic extract as the most active one, which is in accordance with the existing data suggesting that this plant represents an effective antibacterial and wound-healing agent commonly used in traditional medicine. Altogether, these results are expected to foster further studies that will focus on combating bacterial resistance to antibiotics using natural products.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Ethanolic extracts of Lamiaceae species inhibit the bacterial infection of human lung fibroblasts and stimulate cell migration",
pages = "799-800",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5728"
}

Oalđe Pavlović, M., Đorđević, J., Jovanović Marić, J., Kolarević, S., Duletić-Laušević, S.,& Vuković-Gačić, B.. (2022). Ethanolic extracts of Lamiaceae species inhibit the bacterial infection of human lung fibroblasts and stimulate cell migration. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 799-800.
https://hdl.handle.net/21.15107/rcub_ibiss_5728

Oalđe Pavlović M, Đorđević J, Jovanović Marić J, Kolarević S, Duletić-Laušević S, Vuković-Gačić B. Ethanolic extracts of Lamiaceae species inhibit the bacterial infection of human lung fibroblasts and stimulate cell migration. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:799-800.
https://hdl.handle.net/21.15107/rcub_ibiss_5728 .

Oalđe Pavlović, Mariana, Đorđević, Jelena, Jovanović Marić, Jovana, Kolarević, Stoimir, Duletić-Laušević, Sonja, Vuković-Gačić, Branka, "Ethanolic extracts of Lamiaceae species inhibit the bacterial infection of human lung fibroblasts and stimulate cell migration" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):799-800,
https://hdl.handle.net/21.15107/rcub_ibiss_5728 .

TY  - CONF
AU  - Kostić-Vuković, Jovana
AU  - Sunjog, Karolina
AU  - Kolarević, Stoimir
AU  - Smederevac-Lalić, Marija
AU  - Marković, Zoran
AU  - Skorić, Stefan
AU  - Jaćimović, Milica
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5723
AB  - Invasive alien fish species represent one of the greatest threats to the
biodiversity and ecological status of freshwater ecosystems. Within their
management, their application as bioindicators of pollution in monitoring
programs should be considered. The aim of this study was to examine the
use of black bullhead Ameiurus melas (Rafinesque, 1820), invasive alien fish
in Serbia, as a bioindicator of water genotoxicity by alkaline comet assay.
Sampling was performed from June to September 2021 on Markovačko
Lake, which is exposed to diffuse pollution from the application of pesticides
on the surrounding agricultural land. Monitoring also included the
assessment of water quality by basic physical and chemical parameters, as
well as microbiological indicators of faecal pollution. Alkaline comet assay
was performed on fish erythrocytes, on ten specimens per month. The study
also included ten control fish from the recirculating aquaculture system
(RAS), which were transferred from Markovačko Lake for breeding, and
treatment of their erythrocytes with H2O2 as a positive control. Scoring of
comets was performed by CometScore 2.0 software. The lowest level of
DNA damage was recorded in the control group and the highest in the
positive control group. August was the month with the lowest level of DNA
damage, and September with the highest. Statistically significant
differences were found between all groups indicating a high sensitivity of
the alkaline comet assay to discriminate fine differences in the genotoxic
potential of water. Knowing that black bullhead is highly abundant in
stagnant waters and relatively easy to sample, this study draws additional
attention to its use as a bioindicator of genotoxicity.
PB  - European Environmental Mutagenesis & Genomics Society
C3  - Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
T1  - Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity.
SP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5723
ER  - 

@conference{
author = "Kostić-Vuković, Jovana and Sunjog, Karolina and Kolarević, Stoimir and Smederevac-Lalić, Marija and Marković, Zoran and Skorić, Stefan and Jaćimović, Milica",
year = "2022",
abstract = "Invasive alien fish species represent one of the greatest threats to the
biodiversity and ecological status of freshwater ecosystems. Within their
management, their application as bioindicators of pollution in monitoring
programs should be considered. The aim of this study was to examine the
use of black bullhead Ameiurus melas (Rafinesque, 1820), invasive alien fish
in Serbia, as a bioindicator of water genotoxicity by alkaline comet assay.
Sampling was performed from June to September 2021 on Markovačko
Lake, which is exposed to diffuse pollution from the application of pesticides
on the surrounding agricultural land. Monitoring also included the
assessment of water quality by basic physical and chemical parameters, as
well as microbiological indicators of faecal pollution. Alkaline comet assay
was performed on fish erythrocytes, on ten specimens per month. The study
also included ten control fish from the recirculating aquaculture system
(RAS), which were transferred from Markovačko Lake for breeding, and
treatment of their erythrocytes with H2O2 as a positive control. Scoring of
comets was performed by CometScore 2.0 software. The lowest level of
DNA damage was recorded in the control group and the highest in the
positive control group. August was the month with the lowest level of DNA
damage, and September with the highest. Statistically significant
differences were found between all groups indicating a high sensitivity of
the alkaline comet assay to discriminate fine differences in the genotoxic
potential of water. Knowing that black bullhead is highly abundant in
stagnant waters and relatively easy to sample, this study draws additional
attention to its use as a bioindicator of genotoxicity.",
publisher = "European Environmental Mutagenesis & Genomics Society",
journal = "Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands",
title = "Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity.",
pages = "73",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5723"
}

Kostić-Vuković, J., Sunjog, K., Kolarević, S., Smederevac-Lalić, M., Marković, Z., Skorić, S.,& Jaćimović, M.. (2022). Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
European Environmental Mutagenesis & Genomics Society., 73.
https://hdl.handle.net/21.15107/rcub_ibiss_5723

Kostić-Vuković J, Sunjog K, Kolarević S, Smederevac-Lalić M, Marković Z, Skorić S, Jaćimović M. Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands. 2022;:73.
https://hdl.handle.net/21.15107/rcub_ibiss_5723 .

Kostić-Vuković, Jovana, Sunjog, Karolina, Kolarević, Stoimir, Smederevac-Lalić, Marija, Marković, Zoran, Skorić, Stefan, Jaćimović, Milica, "Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity." in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands (2022):73,
https://hdl.handle.net/21.15107/rcub_ibiss_5723 .

TY  - CONF
AU  - Jovanović Marić, Jovana
AU  - Kračun-Kolarević, Margareta
AU  - Kolarević, Stoimir
AU  - Đorđević, Jelena
AU  - Sunjog, Karolina
AU  - Kostić-Vuković, Jovana
AU  - Paunović, Momir
AU  - Vuković-Gačić, Branka
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5724
AB  - The middle section of the Danube River basin in the previous three Joint
Danube Surveys (JDS) was found to be under intensive pollution, mainly
affected by wastewaters. As a consequence of the lack of wastewater
treatment plants, complex xenobiotics mixtures may get into surface water
and decrease water quality and organisms’ health. Some xenobiotics may
induce different types of DNA damage. Hence, DNA damage could be a
useful biomarker in the detection of “early warning signals” of organisms’
exposure to genotoxic compounds, while the usage of bioassays batteries
can provide better insight into a genotoxic potential. This study was
conducted in 2019, during the JDS4 expedition, to assess the genotoxic
potential of nine sites on the section of the Danube River which goes
through Serbia and its major tributaries: the Sava, Tisza and Velika Morava.
Blood and muscle of Alburnus alburnus (bleak) were used for genotoxicity
assessment by comet, micronucleus and RAPD assays. In comet assay, the
highest level of DNA damage was recorded at the Velika Morava mouth (JDS
39) and on the Danube River, downstream Radujevac (JDS 41). The highest
frequency of micronucleus was recorded at the Sava mouth (JDS 36) and on
the Danube River, downstream Pančevo (JDS 37). The lowest level of DNA
damage in both tests was recorded on the Sava, site Jamena (JDS 35). The
RAPD analysis distinct three major groups: Tisza mouth (JDS 33) and sites
on the Sava (JDS 35, JDS 36), then two sites on the Danube River (JDS 37,
JDS 41) and one site on the Danube River, Ram (JDS 40) with the Velika
Morava mouth (JDS 39). Analyzed bioassays showed different sensitivity
where the comet assay had the highest potential in discrimination of sites
based on genotoxicity. Bleak was proved to be a reliable bioindicator in eco/
genotoxicological studies.
PB  - European Environmental Mutagenesis & Genomics Society
C3  - Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
T1  - Evaluation of genotoxic potential of the middle section of the Danube River and its major tributaries.
SP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5724
ER  - 

@conference{
author = "Jovanović Marić, Jovana and Kračun-Kolarević, Margareta and Kolarević, Stoimir and Đorđević, Jelena and Sunjog, Karolina and Kostić-Vuković, Jovana and Paunović, Momir and Vuković-Gačić, Branka",
year = "2022",
abstract = "The middle section of the Danube River basin in the previous three Joint
Danube Surveys (JDS) was found to be under intensive pollution, mainly
affected by wastewaters. As a consequence of the lack of wastewater
treatment plants, complex xenobiotics mixtures may get into surface water
and decrease water quality and organisms’ health. Some xenobiotics may
induce different types of DNA damage. Hence, DNA damage could be a
useful biomarker in the detection of “early warning signals” of organisms’
exposure to genotoxic compounds, while the usage of bioassays batteries
can provide better insight into a genotoxic potential. This study was
conducted in 2019, during the JDS4 expedition, to assess the genotoxic
potential of nine sites on the section of the Danube River which goes
through Serbia and its major tributaries: the Sava, Tisza and Velika Morava.
Blood and muscle of Alburnus alburnus (bleak) were used for genotoxicity
assessment by comet, micronucleus and RAPD assays. In comet assay, the
highest level of DNA damage was recorded at the Velika Morava mouth (JDS
39) and on the Danube River, downstream Radujevac (JDS 41). The highest
frequency of micronucleus was recorded at the Sava mouth (JDS 36) and on
the Danube River, downstream Pančevo (JDS 37). The lowest level of DNA
damage in both tests was recorded on the Sava, site Jamena (JDS 35). The
RAPD analysis distinct three major groups: Tisza mouth (JDS 33) and sites
on the Sava (JDS 35, JDS 36), then two sites on the Danube River (JDS 37,
JDS 41) and one site on the Danube River, Ram (JDS 40) with the Velika
Morava mouth (JDS 39). Analyzed bioassays showed different sensitivity
where the comet assay had the highest potential in discrimination of sites
based on genotoxicity. Bleak was proved to be a reliable bioindicator in eco/
genotoxicological studies.",
publisher = "European Environmental Mutagenesis & Genomics Society",
journal = "Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands",
title = "Evaluation of genotoxic potential of the middle section of the Danube River and its major tributaries.",
pages = "69",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5724"
}

Jovanović Marić, J., Kračun-Kolarević, M., Kolarević, S., Đorđević, J., Sunjog, K., Kostić-Vuković, J., Paunović, M.,& Vuković-Gačić, B.. (2022). Evaluation of genotoxic potential of the middle section of the Danube River and its major tributaries.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
European Environmental Mutagenesis & Genomics Society., 69.
https://hdl.handle.net/21.15107/rcub_ibiss_5724

Jovanović Marić J, Kračun-Kolarević M, Kolarević S, Đorđević J, Sunjog K, Kostić-Vuković J, Paunović M, Vuković-Gačić B. Evaluation of genotoxic potential of the middle section of the Danube River and its major tributaries.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands. 2022;:69.
https://hdl.handle.net/21.15107/rcub_ibiss_5724 .

Jovanović Marić, Jovana, Kračun-Kolarević, Margareta, Kolarević, Stoimir, Đorđević, Jelena, Sunjog, Karolina, Kostić-Vuković, Jovana, Paunović, Momir, Vuković-Gačić, Branka, "Evaluation of genotoxic potential of the middle section of the Danube River and its major tributaries." in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands (2022):69,
https://hdl.handle.net/21.15107/rcub_ibiss_5724 .

TY  - CONF
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Jovanović Marić, Jovana
AU  - Đorđević, Jelena
AU  - Paunović, Momir
AU  - Kostić-Vuković, Jovana
AU  - Sunjog, Karolina
AU  - Gačić, Zoran
AU  - Vuković-Gačić, Branka
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5722
AB  - Within the past decade, our research group placed great effort in
exploration of the impact of treated/untreated wastewaters on aquatic
ecosystems as less than 13 % of collected municipal wastewaters are
processed before their release to receiving waters in Serbia. Having in mind
that more than 90% of the rivers within the territory of Serbia belong to the
Danube River Basin, our major focus is naturally on the large transnational
waters such as the Danube and Sava rivers. Depended on the concept of the
study and hydro-morphological characteristics of the sites, various
approaches have been employed for in situ assessment of eco/geno-toxicity
which use different organisms in passive and active biomonitoring. Aquatic
organisms of different trophic levels have diverse life strategies, metabolism
pathways, and consequently, they have a different response to pollutant
pressure. In eco/geno-toxicological studies we have successfully employed
several species of freshwater mussels (Unio tumidus, Unio pictorum and
Sinanodonta woodiana) as well as few economically important fish species
(common carp (Cyprinus carpio), freshwater bream (Abramis brama), bleak
(Alburnus alburnus, chub (Squalius cephalus)).Comet assay is our primary
choice for the assessment of DNA damage considering its sensitivity and
cost effectiveness. Selection of certain types of tissues for the assessment
(such as blood or haemolymph), which do not require sacrificing of the
animals or additional manipulation in preparation of cell suspension coupled
with mini-gel format of the slides enables high-throughput screening of the
genotoxic potential in situ. Additionally, cryopreservation of the blood
samples directly onsite expands the research area as it overcomes issues
related to safe transportation of the samples to the laboratory. Data
obtained so far indicated that the genotoxic response in the studied
indicator organisms significantly differ which is understandable considering
the difference in uptake, accumulation and physiological responses.
PB  - European Environmental Mutagenesis & Genomics Society
C3  - Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
T1  - Application of comet assay in aquatic organisms – summary and lessons learned in past 10 years of field research.
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5722
ER  - 

@conference{
author = "Kolarević, Stoimir and Kračun-Kolarević, Margareta and Jovanović Marić, Jovana and Đorđević, Jelena and Paunović, Momir and Kostić-Vuković, Jovana and Sunjog, Karolina and Gačić, Zoran and Vuković-Gačić, Branka",
year = "2022",
abstract = "Within the past decade, our research group placed great effort in
exploration of the impact of treated/untreated wastewaters on aquatic
ecosystems as less than 13 % of collected municipal wastewaters are
processed before their release to receiving waters in Serbia. Having in mind
that more than 90% of the rivers within the territory of Serbia belong to the
Danube River Basin, our major focus is naturally on the large transnational
waters such as the Danube and Sava rivers. Depended on the concept of the
study and hydro-morphological characteristics of the sites, various
approaches have been employed for in situ assessment of eco/geno-toxicity
which use different organisms in passive and active biomonitoring. Aquatic
organisms of different trophic levels have diverse life strategies, metabolism
pathways, and consequently, they have a different response to pollutant
pressure. In eco/geno-toxicological studies we have successfully employed
several species of freshwater mussels (Unio tumidus, Unio pictorum and
Sinanodonta woodiana) as well as few economically important fish species
(common carp (Cyprinus carpio), freshwater bream (Abramis brama), bleak
(Alburnus alburnus, chub (Squalius cephalus)).Comet assay is our primary
choice for the assessment of DNA damage considering its sensitivity and
cost effectiveness. Selection of certain types of tissues for the assessment
(such as blood or haemolymph), which do not require sacrificing of the
animals or additional manipulation in preparation of cell suspension coupled
with mini-gel format of the slides enables high-throughput screening of the
genotoxic potential in situ. Additionally, cryopreservation of the blood
samples directly onsite expands the research area as it overcomes issues
related to safe transportation of the samples to the laboratory. Data
obtained so far indicated that the genotoxic response in the studied
indicator organisms significantly differ which is understandable considering
the difference in uptake, accumulation and physiological responses.",
publisher = "European Environmental Mutagenesis & Genomics Society",
journal = "Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands",
title = "Application of comet assay in aquatic organisms – summary and lessons learned in past 10 years of field research.",
pages = "42",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5722"
}

Kolarević, S., Kračun-Kolarević, M., Jovanović Marić, J., Đorđević, J., Paunović, M., Kostić-Vuković, J., Sunjog, K., Gačić, Z.,& Vuković-Gačić, B.. (2022). Application of comet assay in aquatic organisms – summary and lessons learned in past 10 years of field research.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands
European Environmental Mutagenesis & Genomics Society., 42.
https://hdl.handle.net/21.15107/rcub_ibiss_5722

Kolarević S, Kračun-Kolarević M, Jovanović Marić J, Đorđević J, Paunović M, Kostić-Vuković J, Sunjog K, Gačić Z, Vuković-Gačić B. Application of comet assay in aquatic organisms – summary and lessons learned in past 10 years of field research.. in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands. 2022;:42.
https://hdl.handle.net/21.15107/rcub_ibiss_5722 .

Kolarević, Stoimir, Kračun-Kolarević, Margareta, Jovanović Marić, Jovana, Đorđević, Jelena, Paunović, Momir, Kostić-Vuković, Jovana, Sunjog, Karolina, Gačić, Zoran, Vuković-Gačić, Branka, "Application of comet assay in aquatic organisms – summary and lessons learned in past 10 years of field research." in Joint EEMGS meeting & International Comet Assay Workshop; 2022 May 23-26; Maastricht, The Netherlands (2022):42,
https://hdl.handle.net/21.15107/rcub_ibiss_5722 .

TY  - CONF
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Oswald, Peter
AU  - Slobodnik, Jaroslav
AU  - Paunović, Momir
AU  - Vuković-Gačić, Branka
AU  - Žegura, Bojana
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6233
AB  - BACKGROUND
Prokaryotic assays are of great interest in eco/geno-toxicology as they are short-term, simple and cost
effective. Application of strains of Salmonella typhimurium with modifications such as increased cell wall
permeability and lack of excision repair system is common for the detection of genotoxicity. Various eukaryotic models have been developed lately, such as fish derived cell lines, which can mimic the response of the aquatic organisms. Considering different level of cell organization among these models, difference in sensitivity is expected, yet only few studies address this topic.
OBJECTIVES
The major objective was to investigate genotoxic potential of extracts of surface water of the Danube
and to compare the results obtained in applied prokaryotic and eukaryotic models.
METHODS
Surface water samples from 24 sites along the Danube River were extracted by LVSPE Horizon sampler providing relative enrichment factor (REF) of the extracts of 25,000x. For representative prokaryotic model the SOS/umuC assay with S. typhimurium TA1535/pSK1002 was used. Eukaryotic model comprised assessment of cytotoxicity by MTS test and assessment of genotoxicity by comet assay in ZFL (ZebraFish Liver) cells.
RESULTS
While none of the tested samples has induced SOS response, the result of MTS assay indicated that 11 of 24 samples were cytotoxic. In comet assay, genotoxic potential was found in 9 of 24 samples. Results indicated higher sensitivity of used eukaryotic model in comparison with prokaryotic. Applied prokaryotic assay is often suggested to be used as prescreening tool in diagnostics of genotoxic potential which by our opinion could be misleading.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Comparative in vitro evaluation of genotoxic potential of the Danube River water extracts in prokaryotic and eukaryotic assays
SP  - 160
EP  - 161
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6233
ER  - 

@conference{
author = "Kolarević, Stoimir and Kračun-Kolarević, Margareta and Oswald, Peter and Slobodnik, Jaroslav and Paunović, Momir and Vuković-Gačić, Branka and Žegura, Bojana",
year = "2022",
abstract = "BACKGROUND
Prokaryotic assays are of great interest in eco/geno-toxicology as they are short-term, simple and cost
effective. Application of strains of Salmonella typhimurium with modifications such as increased cell wall
permeability and lack of excision repair system is common for the detection of genotoxicity. Various eukaryotic models have been developed lately, such as fish derived cell lines, which can mimic the response of the aquatic organisms. Considering different level of cell organization among these models, difference in sensitivity is expected, yet only few studies address this topic.
OBJECTIVES
The major objective was to investigate genotoxic potential of extracts of surface water of the Danube
and to compare the results obtained in applied prokaryotic and eukaryotic models.
METHODS
Surface water samples from 24 sites along the Danube River were extracted by LVSPE Horizon sampler providing relative enrichment factor (REF) of the extracts of 25,000x. For representative prokaryotic model the SOS/umuC assay with S. typhimurium TA1535/pSK1002 was used. Eukaryotic model comprised assessment of cytotoxicity by MTS test and assessment of genotoxicity by comet assay in ZFL (ZebraFish Liver) cells.
RESULTS
While none of the tested samples has induced SOS response, the result of MTS assay indicated that 11 of 24 samples were cytotoxic. In comet assay, genotoxic potential was found in 9 of 24 samples. Results indicated higher sensitivity of used eukaryotic model in comparison with prokaryotic. Applied prokaryotic assay is often suggested to be used as prescreening tool in diagnostics of genotoxic potential which by our opinion could be misleading.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Comparative in vitro evaluation of genotoxic potential of the Danube River water extracts in prokaryotic and eukaryotic assays",
pages = "160-161",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6233"
}

Kolarević, S., Kračun-Kolarević, M., Oswald, P., Slobodnik, J., Paunović, M., Vuković-Gačić, B.,& Žegura, B.. (2022). Comparative in vitro evaluation of genotoxic potential of the Danube River water extracts in prokaryotic and eukaryotic assays. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 160-161.
https://hdl.handle.net/21.15107/rcub_ibiss_6233

Kolarević S, Kračun-Kolarević M, Oswald P, Slobodnik J, Paunović M, Vuković-Gačić B, Žegura B. Comparative in vitro evaluation of genotoxic potential of the Danube River water extracts in prokaryotic and eukaryotic assays. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:160-161.
https://hdl.handle.net/21.15107/rcub_ibiss_6233 .

Kolarević, Stoimir, Kračun-Kolarević, Margareta, Oswald, Peter, Slobodnik, Jaroslav, Paunović, Momir, Vuković-Gačić, Branka, Žegura, Bojana, "Comparative in vitro evaluation of genotoxic potential of the Danube River water extracts in prokaryotic and eukaryotic assays" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):160-161,
https://hdl.handle.net/21.15107/rcub_ibiss_6233 .

TY  - CONF
AU  - Kirschner, Alexander K.T.
AU  - Schachner, Iris
AU  - Jakwerth, Stefan
AU  - Zarfel, Gernot
AU  - Koller, Michael
AU  - Kittinger, Clemens
AU  - Tóth, Erika
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Blaschke, Alfred Paul
AU  - Derx, Julia
AU  - Linke, Rita
AU  - Demeter, Katalin
AU  - Reischer, Georg
AU  - Savio, Domenico
AU  - Farnleitner, Andreas H.
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6232
AB  - Sustainable and target-oriented microbiological water quality management of rivers needs information on
whole river systems, especially if catchments are large and international. The microbiological water quality
of rivers is of uttermost relevance for human health as river water is used for several purposes (recreation,
drinking water production, irrigation). Besides information on faecal pollution levels, the origin of faecal
pollution and the assessment of associated infection- and health risks, e g. from antimicrobial resistant bacteria (ARB) are of increasing importance. This contribution summarizes the concepts and main results from the Joint-Danube-Surveys (JDS) and discusses future challenges and perspectives (pollution-scenario modelling, infection-risk assessment) for the Danube River concerning its faecal and AMR pollution status.
Between 2001 and 2019, the whole Danube was sampled four times during the JDS. Beside standard faecal indicator analysis, cutting-edge molecular detection concepts were applied, including microbial source tracking (MST) markers by quantitative PCR (qPCR) and high-throughput amplicon-sequencing of bacterial communities. For AMR-profiling, clinically relevant bacterial species were isolated and tested for resistances and resistance genes were determined via qPCR.
With this, we could impressively demonstrate that the JDS create the required multi-national “big picture”
of the microbiological pollution status of large rivers. Harmonised trans-border microbiological water quality aps for the whole navigable Danube were established. MST marker analysis elucidated that the main faecal pollution source along the whole river is human wastewater. Combined analysis of faecal indicators, MST and AMR-profiles provided a solid basis for assessing the potential health impacts of AMR associated with faecal pollution.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Faecal pollution and antibiotic resistance in the Danube River: Vision, Concepts and Lessons learned from Joint Danube Surveys
SP  - 144
EP  - 145
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6232
ER  - 

@conference{
author = "Kirschner, Alexander K.T. and Schachner, Iris and Jakwerth, Stefan and Zarfel, Gernot and Koller, Michael and Kittinger, Clemens and Tóth, Erika and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Blaschke, Alfred Paul and Derx, Julia and Linke, Rita and Demeter, Katalin and Reischer, Georg and Savio, Domenico and Farnleitner, Andreas H.",
year = "2022",
abstract = "Sustainable and target-oriented microbiological water quality management of rivers needs information on
whole river systems, especially if catchments are large and international. The microbiological water quality
of rivers is of uttermost relevance for human health as river water is used for several purposes (recreation,
drinking water production, irrigation). Besides information on faecal pollution levels, the origin of faecal
pollution and the assessment of associated infection- and health risks, e g. from antimicrobial resistant bacteria (ARB) are of increasing importance. This contribution summarizes the concepts and main results from the Joint-Danube-Surveys (JDS) and discusses future challenges and perspectives (pollution-scenario modelling, infection-risk assessment) for the Danube River concerning its faecal and AMR pollution status.
Between 2001 and 2019, the whole Danube was sampled four times during the JDS. Beside standard faecal indicator analysis, cutting-edge molecular detection concepts were applied, including microbial source tracking (MST) markers by quantitative PCR (qPCR) and high-throughput amplicon-sequencing of bacterial communities. For AMR-profiling, clinically relevant bacterial species were isolated and tested for resistances and resistance genes were determined via qPCR.
With this, we could impressively demonstrate that the JDS create the required multi-national “big picture”
of the microbiological pollution status of large rivers. Harmonised trans-border microbiological water quality aps for the whole navigable Danube were established. MST marker analysis elucidated that the main faecal pollution source along the whole river is human wastewater. Combined analysis of faecal indicators, MST and AMR-profiles provided a solid basis for assessing the potential health impacts of AMR associated with faecal pollution.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Faecal pollution and antibiotic resistance in the Danube River: Vision, Concepts and Lessons learned from Joint Danube Surveys",
pages = "144-145",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6232"
}

Kirschner, A. K.T., Schachner, I., Jakwerth, S., Zarfel, G., Koller, M., Kittinger, C., Tóth, E., Kolarević, S., Kračun-Kolarević, M., Blaschke, A. P., Derx, J., Linke, R., Demeter, K., Reischer, G., Savio, D.,& Farnleitner, A. H.. (2022). Faecal pollution and antibiotic resistance in the Danube River: Vision, Concepts and Lessons learned from Joint Danube Surveys. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 144-145.
https://hdl.handle.net/21.15107/rcub_ibiss_6232

Kirschner AK, Schachner I, Jakwerth S, Zarfel G, Koller M, Kittinger C, Tóth E, Kolarević S, Kračun-Kolarević M, Blaschke AP, Derx J, Linke R, Demeter K, Reischer G, Savio D, Farnleitner AH. Faecal pollution and antibiotic resistance in the Danube River: Vision, Concepts and Lessons learned from Joint Danube Surveys. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:144-145.
https://hdl.handle.net/21.15107/rcub_ibiss_6232 .

Kirschner, Alexander K.T., Schachner, Iris, Jakwerth, Stefan, Zarfel, Gernot, Koller, Michael, Kittinger, Clemens, Tóth, Erika, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Blaschke, Alfred Paul, Derx, Julia, Linke, Rita, Demeter, Katalin, Reischer, Georg, Savio, Domenico, Farnleitner, Andreas H., "Faecal pollution and antibiotic resistance in the Danube River: Vision, Concepts and Lessons learned from Joint Danube Surveys" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):144-145,
https://hdl.handle.net/21.15107/rcub_ibiss_6232 .

TY  - CONF
AU  - Kolarević, Stoimir
AU  - Micsinai, Adrienn
AU  - Szántó-Egész, Réka
AU  - Lukács, Alena
AU  - Kračun-Kolarević, Margareta
AU  - Đorđević, Ana
AU  - Jovanović Marić, Jovana
AU  - Vojnović-Milutinović, Danijela
AU  - Kirschner, Alexander K.T.
AU  - Farnleitner, Andreas H.
AU  - Linke, Rita
AU  - Đukić, Aleksandar
AU  - Kostić, Jovana
AU  - Sunjog, Karolina
AU  - Paunović, Momir
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6235
AB  - BACKGROUND
Prokaryotic assays are of great interest in eco/geno-toxicology as they are short-term, simple and cost effective. Application of strains of Salmonella typhimurium with modifications such as increased cell wall permeability and lack of excision repair system is common for the detection of genotoxicity. Various eukaryotic models have been developed lately, such as fish derived cell lines, which can mimic the response of the aquatic organisms. Considering different level of cell organization among these models, difference in sensitivity is expected, yet only few studies address this topic.
OBJECTIVES
The major objective was to investigate genotoxic potential of extracts of surface water of the Danube
and to compare the results obtained in applied prokaryotic and eukaryotic models.
METHODS
Surface water samples from 24 sites along the Danube River were extracted by LVSPE Horizon sampler providing relative enrichment factor (REF) of the extracts of 25,000x. For representative prokaryotic model the SOS/umuC assay with S. typhimurium TA1535/pSK1002 was used. Eukaryotic model comprised assessment of cytotoxicity by MTS test and assessment of genotoxicity by comet assay in ZFL (ZebraFish Liver) cells.
RESULTS
While none of the tested samples has induced SOS response, the result of MTS assay indicated that 11 of 24 samples were cytotoxic. In comet assay, genotoxic potential was found in 9 of 24 samples. Results indicated higher sensitivity of used eukaryotic model in comparison with prokaryotic. Applied prokaryotic assay is often suggested to be used as prescreening tool in diagnostics of genotoxic potential which by our opinion could be misleading.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Wastewater based epidemiology in countries with poor wastewater treatment - SARS-CoV-2 RNA in surface waters
SP  - 614
EP  - 615
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6235
ER  - 

@conference{
author = "Kolarević, Stoimir and Micsinai, Adrienn and Szántó-Egész, Réka and Lukács, Alena and Kračun-Kolarević, Margareta and Đorđević, Ana and Jovanović Marić, Jovana and Vojnović-Milutinović, Danijela and Kirschner, Alexander K.T. and Farnleitner, Andreas H. and Linke, Rita and Đukić, Aleksandar and Kostić, Jovana and Sunjog, Karolina and Paunović, Momir",
year = "2022",
abstract = "BACKGROUND
Prokaryotic assays are of great interest in eco/geno-toxicology as they are short-term, simple and cost effective. Application of strains of Salmonella typhimurium with modifications such as increased cell wall permeability and lack of excision repair system is common for the detection of genotoxicity. Various eukaryotic models have been developed lately, such as fish derived cell lines, which can mimic the response of the aquatic organisms. Considering different level of cell organization among these models, difference in sensitivity is expected, yet only few studies address this topic.
OBJECTIVES
The major objective was to investigate genotoxic potential of extracts of surface water of the Danube
and to compare the results obtained in applied prokaryotic and eukaryotic models.
METHODS
Surface water samples from 24 sites along the Danube River were extracted by LVSPE Horizon sampler providing relative enrichment factor (REF) of the extracts of 25,000x. For representative prokaryotic model the SOS/umuC assay with S. typhimurium TA1535/pSK1002 was used. Eukaryotic model comprised assessment of cytotoxicity by MTS test and assessment of genotoxicity by comet assay in ZFL (ZebraFish Liver) cells.
RESULTS
While none of the tested samples has induced SOS response, the result of MTS assay indicated that 11 of 24 samples were cytotoxic. In comet assay, genotoxic potential was found in 9 of 24 samples. Results indicated higher sensitivity of used eukaryotic model in comparison with prokaryotic. Applied prokaryotic assay is often suggested to be used as prescreening tool in diagnostics of genotoxic potential which by our opinion could be misleading.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Wastewater based epidemiology in countries with poor wastewater treatment - SARS-CoV-2 RNA in surface waters",
pages = "614-615",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6235"
}

Kolarević, S., Micsinai, A., Szántó-Egész, R., Lukács, A., Kračun-Kolarević, M., Đorđević, A., Jovanović Marić, J., Vojnović-Milutinović, D., Kirschner, A. K.T., Farnleitner, A. H., Linke, R., Đukić, A., Kostić, J., Sunjog, K.,& Paunović, M.. (2022). Wastewater based epidemiology in countries with poor wastewater treatment - SARS-CoV-2 RNA in surface waters. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 614-615.
https://hdl.handle.net/21.15107/rcub_ibiss_6235

Kolarević S, Micsinai A, Szántó-Egész R, Lukács A, Kračun-Kolarević M, Đorđević A, Jovanović Marić J, Vojnović-Milutinović D, Kirschner AK, Farnleitner AH, Linke R, Đukić A, Kostić J, Sunjog K, Paunović M. Wastewater based epidemiology in countries with poor wastewater treatment - SARS-CoV-2 RNA in surface waters. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:614-615.
https://hdl.handle.net/21.15107/rcub_ibiss_6235 .

Kolarević, Stoimir, Micsinai, Adrienn, Szántó-Egész, Réka, Lukács, Alena, Kračun-Kolarević, Margareta, Đorđević, Ana, Jovanović Marić, Jovana, Vojnović-Milutinović, Danijela, Kirschner, Alexander K.T., Farnleitner, Andreas H., Linke, Rita, Đukić, Aleksandar, Kostić, Jovana, Sunjog, Karolina, Paunović, Momir, "Wastewater based epidemiology in countries with poor wastewater treatment - SARS-CoV-2 RNA in surface waters" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):614-615,
https://hdl.handle.net/21.15107/rcub_ibiss_6235 .

TY  - CONF
AU  - Schachner, Iris
AU  - Kolm, Claudia
AU  - Vierheilig, Julia
AU  - Savio, Domenico
AU  - Zarfel, Gernot
AU  - Koller, Michael
AU  - Kittinger, Clemens
AU  - Jakwerth, Stefan
AU  - Linke, Rita
AU  - Kolarević, Stoimir
AU  - Kračun-Kolarević, Margareta
AU  - Tóth, Erika
AU  - Farnleitner, Andreas H.
AU  - Kirschner, Alexander K.T.
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6230
AB  - Human-induced antimicrobial resistance is an emerging concern in aquatic environments. Faecal pollution
sources represent potential propagation pathways, however large-scale quantitative studies in whole river
systems are missing. In the course of the Joint Danube Survey, the Danube River was investigated for the
fourth time in summer 2019 from its headwaters to the delta. Microbial-faecal pollution patterns and the
occurrence of selected antibiotic resistance genes (ARGs) were studied. Subsequently, a one-year time series analysis at selected relevant sites allowed to assess temporal variability.
The intestinal bacterium Escherichia coli was quantified according to standard cultivation methods as indicator for total faecal pollution. In general, longitudinal patterns of faecal pollution showed a comparable picture to previous Joint Danube Surveys, with low to moderate pollution in the upper reaches (Germany, Austria) and critical to strong pollution in the middle and lower sections, especially in Serbia. Genetic microbial source tracking methods, determined via quantitative PCR, allowed us to define human faecal pollution as dominant pollution source along the whole Danube. This trend could be generally confirmed during the annual sampling campaign. To estimate the potential of permanent colonialization of faecal microorganisms within the Danube River ecosystem, biofilms as potential reservoirs were studied along the course of the entire river. Here, E.coli were ubiquitously present but highly variable. Ongoing analyses on the occurrence and quantity of selected ARGs will identify hotspots of antimicrobial resistance and their relationship to faecal pollution along the Danube River and thereby contribute to guide future monitoring and management strategies.
PB  - Belgrade: Serbian Society of Microbiology
C3  - Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
T1  - Faecal pollution as potential driver of antibiotic resistance genes in the Danube River
SP  - 137
EP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_6230
ER  - 

@conference{
author = "Schachner, Iris and Kolm, Claudia and Vierheilig, Julia and Savio, Domenico and Zarfel, Gernot and Koller, Michael and Kittinger, Clemens and Jakwerth, Stefan and Linke, Rita and Kolarević, Stoimir and Kračun-Kolarević, Margareta and Tóth, Erika and Farnleitner, Andreas H. and Kirschner, Alexander K.T.",
year = "2022",
abstract = "Human-induced antimicrobial resistance is an emerging concern in aquatic environments. Faecal pollution
sources represent potential propagation pathways, however large-scale quantitative studies in whole river
systems are missing. In the course of the Joint Danube Survey, the Danube River was investigated for the
fourth time in summer 2019 from its headwaters to the delta. Microbial-faecal pollution patterns and the
occurrence of selected antibiotic resistance genes (ARGs) were studied. Subsequently, a one-year time series analysis at selected relevant sites allowed to assess temporal variability.
The intestinal bacterium Escherichia coli was quantified according to standard cultivation methods as indicator for total faecal pollution. In general, longitudinal patterns of faecal pollution showed a comparable picture to previous Joint Danube Surveys, with low to moderate pollution in the upper reaches (Germany, Austria) and critical to strong pollution in the middle and lower sections, especially in Serbia. Genetic microbial source tracking methods, determined via quantitative PCR, allowed us to define human faecal pollution as dominant pollution source along the whole Danube. This trend could be generally confirmed during the annual sampling campaign. To estimate the potential of permanent colonialization of faecal microorganisms within the Danube River ecosystem, biofilms as potential reservoirs were studied along the course of the entire river. Here, E.coli were ubiquitously present but highly variable. Ongoing analyses on the occurrence and quantity of selected ARGs will identify hotspots of antimicrobial resistance and their relationship to faecal pollution along the Danube River and thereby contribute to guide future monitoring and management strategies.",
publisher = "Belgrade: Serbian Society of Microbiology",
journal = "Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia",
title = "Faecal pollution as potential driver of antibiotic resistance genes in the Danube River",
pages = "137-138",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6230"
}

Schachner, I., Kolm, C., Vierheilig, J., Savio, D., Zarfel, G., Koller, M., Kittinger, C., Jakwerth, S., Linke, R., Kolarević, S., Kračun-Kolarević, M., Tóth, E., Farnleitner, A. H.,& Kirschner, A. K.T.. (2022). Faecal pollution as potential driver of antibiotic resistance genes in the Danube River. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia
Belgrade: Serbian Society of Microbiology., 137-138.
https://hdl.handle.net/21.15107/rcub_ibiss_6230

Schachner I, Kolm C, Vierheilig J, Savio D, Zarfel G, Koller M, Kittinger C, Jakwerth S, Linke R, Kolarević S, Kračun-Kolarević M, Tóth E, Farnleitner AH, Kirschner AK. Faecal pollution as potential driver of antibiotic resistance genes in the Danube River. in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia. 2022;:137-138.
https://hdl.handle.net/21.15107/rcub_ibiss_6230 .

Schachner, Iris, Kolm, Claudia, Vierheilig, Julia, Savio, Domenico, Zarfel, Gernot, Koller, Michael, Kittinger, Clemens, Jakwerth, Stefan, Linke, Rita, Kolarević, Stoimir, Kračun-Kolarević, Margareta, Tóth, Erika, Farnleitner, Andreas H., Kirschner, Alexander K.T., "Faecal pollution as potential driver of antibiotic resistance genes in the Danube River" in Electronic abstract book: FEMS Conference on Microbiology in association with Serbian Society of Microbiology; 2022 Jun 30 - Jul 2; Belgrade, Serbia (2022):137-138,
https://hdl.handle.net/21.15107/rcub_ibiss_6230 .