Gut microbiota as a target of toxic compounds
Crevna mikrobiota kao osetljiva meta delovanja toksičnih supstanci
2023
Authors:
Brdarić, EmilijaPopović, Dušanka
Kulaš, Jelena
Soković Bajić, Svetlana
Golić, Nataša
Mirkov, Ivana
Živković, Milica
Document Type:
Conference object (Published version)
,
© 2023 by the Serbian Society of Toxicology
Metadata
Show full item recordAbstract:
The gut microbiota has important role in maintaining homeostasis via its effect on the immune system
and healthy gastrointestinal tract. Environmental toxicants directly influenced the changes in gut microbiota
composition. Cadmium (Cd) is a hazard, world widely distributed metal. We have proposed
the putative mechanism of protection against Cd harmful effect in the organism by using exopolysaccharides
derived from Lactiplantibacillus plantarum BGAN8 (EPS-AN8) which has great ability to sequester Cd ions.
Aims of our study were to examine Cd related changes in the gut microbiota of Dark agouti (DA) rats after
prolonged oral exposure (30 days) to this metal and to determine impact of EPS-AN8 in preventing
those changes.
Rats were given via water lower (5 ppm) and higher (50 ppm) Cd’s dose. In paralel, EPS-AN8 was administrated
through food (100 μg/ml). Total DNA from duodenum was isolated and PCR amplicon for 16SrRNA was
sequenced on Illumina NovaSeq paired end platform. Moreover, we have followed changes in
oxidative stress and inflammation in duodenum. Cd favored growth of opportunistic pathogen bacteria
genera (Blautia, Prevotella, Alloprevotela, Bacteroides) while the relative abundance of lactobacilli was
decreased. The both doses of Cd increased production of inflammatory cytokines (IL-1β, TNF-α, and
IFN-γ). Also, parameters of oxidative stress were significantly upregulated (MDA, CAT, and GST).
All the mentioned changes were alleviated by EPS-AN8. Oral exposure to Cd lead to inevitable changes
in the microbiota structure followed by inflammation and oxidative stress of surrounding tissue, while
administration of EPS-AN8 reversed those changes.
Keywords:
cadmium; gut microbita; exopolysaccharidesFunding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200042 (University of Belgrade, Institute of Molecular Genetics and Genetic Engineering) (RS-MESTD-inst-2020-200042)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
In:
- Abstract Book: 13th International Congress of the Serbian Society of Toxicology and 1st toxSEE Regional Conference: Present and Future of toxicology: Challenges and opportunities; 2023 May 10-12; Belgrade, Serbia. Belgrade: Serbian Society of Toxicology; 2023. p. 92-3.