TY  - JOUR
AU  - Romić, Snježana
AU  - Đorđević, Ana
AU  - Tepavčević, Snežana
AU  - Ćulafić, Tijana
AU  - Stojiljković, Mojca
AU  - Bursać, Biljana
AU  - Stanišić, Jelena
AU  - Kostić, Milan
AU  - Gligorovska, Ljupka
AU  - Korićanac, Goran
PY  - 2020
UR  - http://www.ncbi.nlm.nih.gov/pubmed/31974538
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3629
AB  - Both a diet rich in fructose and chronic stress exposure induce metabolic and cardiovascular disturbances. The aim of this study was to examine the effects of the fructose-rich diet and chronic stress, separately and in combination, on insulin signaling and molecules regulating glycogen synthesis and ion transport in the heart, and to reveal whether these effects coincide with changes in glucocorticoid receptor (GR) activation. Male Wistar rats were subjected to 10% fructose in drinking water and/or to chronic unpredictable stress for 9 weeks. Protein expression and/or phosphorylation of the insulin receptor (IR), protein tyrosine phosphatase 1B, insulin receptor substrate 1 (IRS1), protein kinase B (Akt), extracellular signal-regulated kinase 1/2 (ERK1/2), glycogen synthase kinase-3β (GSK-3β) and Na+/K+-ATPase α-subunits in cardiac tissue were analyzed by western blot. GR distribution between cytosolic and nuclear fractions was also analyzed. The fructose-rich diet decreased the level of pERK1/2 (Thr202/Tyr204) and pGSK-3β (Ser9) independently of stress, while chronic stress increased the IRS1 content and prevented the fructose diet-induced decrease of the pAkt (Ser473) level. The fructose-rich diet in combination with chronic stress reduced the protein content of cardiac IR and attenuated IRS1 upregulation. Separate treatments increased the protein content of Na+/K+-ATPase α1- and α2-subunits, while after combined treatment the α2 content was at the control level and the α1 content was lower than the control level. The effect of combined treatment on cardiac IR and α2-subunit expression could be mediated by increased GR nuclear accumulation. Our study provides new insights into the effects of chronic stress and a combination of the fructose diet and chronic stress on the studied molecules in the heart.
T2  - Food and Function
T1  - Effects of a fructose-rich diet and chronic stress on insulin signaling and regulation of glycogen synthase kinase-3 beta and the sodium-potassium pump in the hearts of male rats.
IS  - 2
VL  - 11
DO  - 10.1039/c9fo02306b
SP  - 1455
EP  - 1466
ER  - 

@article{
author = "Romić, Snježana and Đorđević, Ana and Tepavčević, Snežana and Ćulafić, Tijana and Stojiljković, Mojca and Bursać, Biljana and Stanišić, Jelena and Kostić, Milan and Gligorovska, Ljupka and Korićanac, Goran",
year = "2020",
abstract = "Both a diet rich in fructose and chronic stress exposure induce metabolic and cardiovascular disturbances. The aim of this study was to examine the effects of the fructose-rich diet and chronic stress, separately and in combination, on insulin signaling and molecules regulating glycogen synthesis and ion transport in the heart, and to reveal whether these effects coincide with changes in glucocorticoid receptor (GR) activation. Male Wistar rats were subjected to 10% fructose in drinking water and/or to chronic unpredictable stress for 9 weeks. Protein expression and/or phosphorylation of the insulin receptor (IR), protein tyrosine phosphatase 1B, insulin receptor substrate 1 (IRS1), protein kinase B (Akt), extracellular signal-regulated kinase 1/2 (ERK1/2), glycogen synthase kinase-3β (GSK-3β) and Na+/K+-ATPase α-subunits in cardiac tissue were analyzed by western blot. GR distribution between cytosolic and nuclear fractions was also analyzed. The fructose-rich diet decreased the level of pERK1/2 (Thr202/Tyr204) and pGSK-3β (Ser9) independently of stress, while chronic stress increased the IRS1 content and prevented the fructose diet-induced decrease of the pAkt (Ser473) level. The fructose-rich diet in combination with chronic stress reduced the protein content of cardiac IR and attenuated IRS1 upregulation. Separate treatments increased the protein content of Na+/K+-ATPase α1- and α2-subunits, while after combined treatment the α2 content was at the control level and the α1 content was lower than the control level. The effect of combined treatment on cardiac IR and α2-subunit expression could be mediated by increased GR nuclear accumulation. Our study provides new insights into the effects of chronic stress and a combination of the fructose diet and chronic stress on the studied molecules in the heart.",
journal = "Food and Function",
title = "Effects of a fructose-rich diet and chronic stress on insulin signaling and regulation of glycogen synthase kinase-3 beta and the sodium-potassium pump in the hearts of male rats.",
number = "2",
volume = "11",
doi = "10.1039/c9fo02306b",
pages = "1455-1466"
}

Romić, S., Đorđević, A., Tepavčević, S., Ćulafić, T., Stojiljković, M., Bursać, B., Stanišić, J., Kostić, M., Gligorovska, L.,& Korićanac, G.. (2020). Effects of a fructose-rich diet and chronic stress on insulin signaling and regulation of glycogen synthase kinase-3 beta and the sodium-potassium pump in the hearts of male rats.. in Food and Function, 11(2), 1455-1466.
https://doi.org/10.1039/c9fo02306b

Romić S, Đorđević A, Tepavčević S, Ćulafić T, Stojiljković M, Bursać B, Stanišić J, Kostić M, Gligorovska L, Korićanac G. Effects of a fructose-rich diet and chronic stress on insulin signaling and regulation of glycogen synthase kinase-3 beta and the sodium-potassium pump in the hearts of male rats.. in Food and Function. 2020;11(2):1455-1466.
doi:10.1039/c9fo02306b .

Romić, Snježana, Đorđević, Ana, Tepavčević, Snežana, Ćulafić, Tijana, Stojiljković, Mojca, Bursać, Biljana, Stanišić, Jelena, Kostić, Milan, Gligorovska, Ljupka, Korićanac, Goran, "Effects of a fructose-rich diet and chronic stress on insulin signaling and regulation of glycogen synthase kinase-3 beta and the sodium-potassium pump in the hearts of male rats." in Food and Function, 11, no. 2 (2020):1455-1466,
https://doi.org/10.1039/c9fo02306b . .

TY  - JOUR
AU  - Bundalo, Maja
AU  - Đorđević, Ana
AU  - Bursać, Biljana
AU  - Živković, Maja
AU  - Korićanac, Goran
AU  - Stanković, Aleksandra
PY  - 2017
UR  - http://www.nrcresearchpress.com/doi/10.1139/apnm-2016-0725
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2936
AB  - The adipose tissue renin–angiotensin system (RAS) is proposed to be a pathophysiological link between adipose tissue dysregulation and metabolic disorders induced by a fructose-rich diet (FRD). RAS can act intracellularly. We hypothesized that adipocyte nuclear membranes possess angiotensin receptor types 1 and 2 (AT1R and AT2R), which couple to nuclear signaling pathways and regulate oxidative gene expression under FRD conditions. We analyzed the effect of consumption of 10% fructose solution for 9 weeks on biochemical parameters, adipocyte morphology, and expression of AT1R, AT2R, AT1R-associated protein (ATRAP), NADPH oxidase 4 (NOX4), matrix metalloproteinase-9 (MMP-9), and manganese superoxide dismutase (MnSOD) in adipose tissue of Wistar rats. We detected AT1R and AT2R in the nuclear fraction. FRD reduced the level of angiotensin receptors in the nucleus, while increased AT1R and decreased AT2R levels were observed in the plasma membrane. FRD increased the ATRAP mRNA level and decreased MnSOD mRNA and protein levels. No significant differences were observed for MMP-9 and NOX4 mRNA levels. These findings coincided with hyperleptinemia, elevated blood pressure and triglycerides, and unchanged visceral adipose tissue mass and morphology in FRD rats. Besides providing evidence for nuclear localization of angiotensin receptors in visceral adipose tissue, this study demonstrates the different effects of FRD on AT1R expression in different cellular compartments. Elevated blood pressure and decreased antioxidant capacity in visceral fat of fructose-fed rats were accompanied by an increased AT1R level in the plasma membrane, while upregulation of ATRAP and a decrease of nuclear membrane AT1R suggest an increased capacity for attenuation of excessive AT1R signaling and visceral adiposity.
T2  - Applied Physiology, Nutrition, and Metabolism
T2  - Applied Physiology, Nutrition, and Metabolism
T1  - Fructose-rich diet differently affects angiotensin II receptor content in the nucleus and a plasma membrane fraction of visceral adipose tissue
IS  - 12
VL  - 42
DO  - 10.1139/apnm-2016-0725
SP  - 1254
EP  - 1263
ER  - 

@article{
author = "Bundalo, Maja and Đorđević, Ana and Bursać, Biljana and Živković, Maja and Korićanac, Goran and Stanković, Aleksandra",
year = "2017",
abstract = "The adipose tissue renin–angiotensin system (RAS) is proposed to be a pathophysiological link between adipose tissue dysregulation and metabolic disorders induced by a fructose-rich diet (FRD). RAS can act intracellularly. We hypothesized that adipocyte nuclear membranes possess angiotensin receptor types 1 and 2 (AT1R and AT2R), which couple to nuclear signaling pathways and regulate oxidative gene expression under FRD conditions. We analyzed the effect of consumption of 10% fructose solution for 9 weeks on biochemical parameters, adipocyte morphology, and expression of AT1R, AT2R, AT1R-associated protein (ATRAP), NADPH oxidase 4 (NOX4), matrix metalloproteinase-9 (MMP-9), and manganese superoxide dismutase (MnSOD) in adipose tissue of Wistar rats. We detected AT1R and AT2R in the nuclear fraction. FRD reduced the level of angiotensin receptors in the nucleus, while increased AT1R and decreased AT2R levels were observed in the plasma membrane. FRD increased the ATRAP mRNA level and decreased MnSOD mRNA and protein levels. No significant differences were observed for MMP-9 and NOX4 mRNA levels. These findings coincided with hyperleptinemia, elevated blood pressure and triglycerides, and unchanged visceral adipose tissue mass and morphology in FRD rats. Besides providing evidence for nuclear localization of angiotensin receptors in visceral adipose tissue, this study demonstrates the different effects of FRD on AT1R expression in different cellular compartments. Elevated blood pressure and decreased antioxidant capacity in visceral fat of fructose-fed rats were accompanied by an increased AT1R level in the plasma membrane, while upregulation of ATRAP and a decrease of nuclear membrane AT1R suggest an increased capacity for attenuation of excessive AT1R signaling and visceral adiposity.",
journal = "Applied Physiology, Nutrition, and Metabolism, Applied Physiology, Nutrition, and Metabolism",
title = "Fructose-rich diet differently affects angiotensin II receptor content in the nucleus and a plasma membrane fraction of visceral adipose tissue",
number = "12",
volume = "42",
doi = "10.1139/apnm-2016-0725",
pages = "1254-1263"
}

Bundalo, M., Đorđević, A., Bursać, B., Živković, M., Korićanac, G.,& Stanković, A.. (2017). Fructose-rich diet differently affects angiotensin II receptor content in the nucleus and a plasma membrane fraction of visceral adipose tissue. in Applied Physiology, Nutrition, and Metabolism, 42(12), 1254-1263.
https://doi.org/10.1139/apnm-2016-0725

Bundalo M, Đorđević A, Bursać B, Živković M, Korićanac G, Stanković A. Fructose-rich diet differently affects angiotensin II receptor content in the nucleus and a plasma membrane fraction of visceral adipose tissue. in Applied Physiology, Nutrition, and Metabolism. 2017;42(12):1254-1263.
doi:10.1139/apnm-2016-0725 .

Bundalo, Maja, Đorđević, Ana, Bursać, Biljana, Živković, Maja, Korićanac, Goran, Stanković, Aleksandra, "Fructose-rich diet differently affects angiotensin II receptor content in the nucleus and a plasma membrane fraction of visceral adipose tissue" in Applied Physiology, Nutrition, and Metabolism, 42, no. 12 (2017):1254-1263,
https://doi.org/10.1139/apnm-2016-0725 . .

TY  - JOUR
AU  - Prodanović, Radiša
AU  - Korićanac, Goran
AU  - Vujanac, Ivan
AU  - Đorđević, Ana
AU  - Pantelić, Marija
AU  - Romić, Snježana
AU  - Stanimirović, Zoran
AU  - Kirovski, Danijela
PY  - 2016
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6086
AB  - We investigated the hypothesis that obesity in dairy cows enhanced expression of proteins involved in hepaticfatty acid uptake and metabolism. Sixteen Holstein-Friesian close-up cows were divided into 2 equal groupsbased on their body condition score (BCS) as optimal (3.25 ≤ BCS ≤ 3.5) and high (4.0 ≤ BCS ≤ 4.25). Intravenousglucose tolerance test (GTT) and liver biopsieswere carried out at day 10 before calving. Blood samples were collectedbefore (basal) and after glucose infusion, and glucose, insulin and non-esterified fatty acid (NEFA) levelswere determined at each sample point. In addition, β-hydroxybutyrate and triglycerides levels were measuredin the basal samples. The liver biopsieswere analyzed for total lipid content and protein expression of insulin receptorbeta (IRβ), fatty acid translocase (FAT/CD36) and sterol regulatory element-binding protein-1 (SREBP-1).Basal glucose and insulin were higher in high-BCS cows, which coincided with higher circulating triglyceridesand hepatic lipid content. Clearance rate and AUC for NEFA during GTT were higher in optimal-BCS cows. The developmentof insulin resistance and fatty liver in obese cows was paralleled by increased hepatic expression ofthe IRβ, CD36 and SREBP-1. These results suggest that increased expression of hepatic CD36 and SREBP-1 is relevantin the obesity-driven lipid accumulation in the liver of dairy cows during late gestation.
PB  - Elsevier
T2  - Research in Veterinary Science
T1  - Obesity-driven prepartal hepatic lipid accumulation in dairy cows is associated with increased CD36 and SREBP-1 expression
VL  - 107
DO  - 10.1016/j.rvsc.2016.04.007
SP  - 16
EP  - 19
ER  - 

@article{
author = "Prodanović, Radiša and Korićanac, Goran and Vujanac, Ivan and Đorđević, Ana and Pantelić, Marija and Romić, Snježana and Stanimirović, Zoran and Kirovski, Danijela",
year = "2016",
abstract = "We investigated the hypothesis that obesity in dairy cows enhanced expression of proteins involved in hepaticfatty acid uptake and metabolism. Sixteen Holstein-Friesian close-up cows were divided into 2 equal groupsbased on their body condition score (BCS) as optimal (3.25 ≤ BCS ≤ 3.5) and high (4.0 ≤ BCS ≤ 4.25). Intravenousglucose tolerance test (GTT) and liver biopsieswere carried out at day 10 before calving. Blood samples were collectedbefore (basal) and after glucose infusion, and glucose, insulin and non-esterified fatty acid (NEFA) levelswere determined at each sample point. In addition, β-hydroxybutyrate and triglycerides levels were measuredin the basal samples. The liver biopsieswere analyzed for total lipid content and protein expression of insulin receptorbeta (IRβ), fatty acid translocase (FAT/CD36) and sterol regulatory element-binding protein-1 (SREBP-1).Basal glucose and insulin were higher in high-BCS cows, which coincided with higher circulating triglyceridesand hepatic lipid content. Clearance rate and AUC for NEFA during GTT were higher in optimal-BCS cows. The developmentof insulin resistance and fatty liver in obese cows was paralleled by increased hepatic expression ofthe IRβ, CD36 and SREBP-1. These results suggest that increased expression of hepatic CD36 and SREBP-1 is relevantin the obesity-driven lipid accumulation in the liver of dairy cows during late gestation.",
publisher = "Elsevier",
journal = "Research in Veterinary Science",
title = "Obesity-driven prepartal hepatic lipid accumulation in dairy cows is associated with increased CD36 and SREBP-1 expression",
volume = "107",
doi = "10.1016/j.rvsc.2016.04.007",
pages = "16-19"
}

Prodanović, R., Korićanac, G., Vujanac, I., Đorđević, A., Pantelić, M., Romić, S., Stanimirović, Z.,& Kirovski, D.. (2016). Obesity-driven prepartal hepatic lipid accumulation in dairy cows is associated with increased CD36 and SREBP-1 expression. in Research in Veterinary Science
Elsevier., 107, 16-19.
https://doi.org/10.1016/j.rvsc.2016.04.007

Prodanović R, Korićanac G, Vujanac I, Đorđević A, Pantelić M, Romić S, Stanimirović Z, Kirovski D. Obesity-driven prepartal hepatic lipid accumulation in dairy cows is associated with increased CD36 and SREBP-1 expression. in Research in Veterinary Science. 2016;107:16-19.
doi:10.1016/j.rvsc.2016.04.007 .

Prodanović, Radiša, Korićanac, Goran, Vujanac, Ivan, Đorđević, Ana, Pantelić, Marija, Romić, Snježana, Stanimirović, Zoran, Kirovski, Danijela, "Obesity-driven prepartal hepatic lipid accumulation in dairy cows is associated with increased CD36 and SREBP-1 expression" in Research in Veterinary Science, 107 (2016):16-19,
https://doi.org/10.1016/j.rvsc.2016.04.007 . .