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Stanković N, Mladenović M, Mihailović M, Arambašić J, Uskoković A, Stanković V, Mihailović V, Katanić J, Matić S, Solujić S, Vuković N, Sukdolak S. Synthesis and toxicological studies of in vivo anticoagulant activity of novel 3-(1-aminoethylidene)chroman-2,4-diones and 4-hydroxy-3-(1-iminoethyl)-2H-chromen-2-ones combined with a structure-based 3-D pharmacophore model. Eur J Pharm Sci 2014; 55:20-35. [PMID: 24468630 DOI: 10.1016/j.ejps.2014.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 01/13/2014] [Accepted: 01/15/2014] [Indexed: 11/16/2022]
Abstract
Eight synthesized 3-(1-aminoethylidene)chroman-2,4-diones and 4-hydroxy-3-(1-iminoethyl)-2H-chromen-2-ones were evaluated as in vivo anticoagulants by intraperitoneal application to adult male Wistar rats in order to examine their pharmacological potential, evaluate ther toxicity and propose the mechanism of action. Two of them, 2f and 2a, in concentration of 2mg/kg of body weight, presented remarkable activity (PT=130s; PT=90s) upon seven days of continuous application. The results of rat serum and liver biochemical screening, as well those of histopathological studies, proved the compounds to be non-toxic. Activity of the compounds was further examined on the molecular level. Here, molecular docking studies were performed to position the compounds in relation to the active site of VKORC1 and determine the bioactive conformations. Docking results suggested a non-covalent mode of action during which the proton transfer occurs from Cys135 SH towards 4-carbonyl group of anticoagulant. All crucial interactions for anticoagulant activity were confirmed in generated structure-based 3-D pharmacophore model, consisted of hydrogen bond acceptor and hydrophobic aromatic features, and quantified by a best correlation coefficient of 0.97.
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Affiliation(s)
- Nevena Stanković
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia.
| | - Milan Mladenović
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Mirjana Mihailović
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Jelena Arambašić
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Aleksandra Uskoković
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Vesna Stanković
- Institute of Pathology, Faculty of Medical Sciences, Svetozara Markovića 69, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Vladimir Mihailović
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Jelena Katanić
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Sanja Matić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Slavica Solujić
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Nenad Vuković
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | - Slobodan Sukdolak
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
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Mihailović V, Katanić J, Mišić D, Stanković V, Mihailović M, Uskoković A, Arambašić J, Solujić S, Mladenović M, Stanković N. Hepatoprotective effects of secoiridoid-rich extracts from Gentiana cruciata L. against carbon tetrachloride induced liver damage in rats. Food Funct 2014; 5:1795-803. [DOI: 10.1039/c4fo00088a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The objective of this work was to investigate the effects of the methanol extracts of Gentiana cruciata L. dilate against carbon tetrachloride-induced liver injury in rats.
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Affiliation(s)
- Vladimir Mihailović
- Department of Chemistry
- Faculty of Science
- University of Kragujevac
- 34000 Kragujevac, Serbia
| | - Jelena Katanić
- Department of Chemistry
- Faculty of Science
- University of Kragujevac
- 34000 Kragujevac, Serbia
| | - Danijela Mišić
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade, Serbia
| | - Vesna Stanković
- Institute of Pathology
- Faculty of Medicine
- University of Kragujevac
- Serbia
| | - Mirjana Mihailović
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade, Serbia
| | - Aleksandra Uskoković
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade, Serbia
| | - Jelena Arambašić
- Institute for Biological Research “Siniša Stanković”
- University of Belgrade
- 11060 Belgrade, Serbia
| | - Slavica Solujić
- Department of Chemistry
- Faculty of Science
- University of Kragujevac
- 34000 Kragujevac, Serbia
| | - Milan Mladenović
- Department of Chemistry
- Faculty of Science
- University of Kragujevac
- 34000 Kragujevac, Serbia
| | - Nevena Stanković
- Department of Chemistry
- Faculty of Science
- University of Kragujevac
- 34000 Kragujevac, Serbia
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Mihailović M, Arambašić J, Uskoković A, Dinić S, Grdović N, Marković J, Bauder J, Poznanović G, Vidaković M. β-Glucan administration to diabetic rats alleviates oxidative stress by lowering hyperglycaemia, decreasing non-enzymatic glycation and protein O-GlcNAcylation. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Marković J, Grdović N, Dinić S, Karan-Djurašević T, Uskoković A, Arambašić J, Mihailović M, Pavlović S, Poznanović G, Vidaković M. PARP-1 and YY1 are important novel regulators of CXCL12 gene transcription in rat pancreatic beta cells. PLoS One 2013; 8:e59679. [PMID: 23555743 PMCID: PMC3608566 DOI: 10.1371/journal.pone.0059679] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 02/16/2013] [Indexed: 12/20/2022] Open
Abstract
Despite significant progress, the molecular mechanisms responsible for pancreatic beta cell depletion and development of diabetes remain poorly defined. At present, there is no preventive measure against diabetes. The positive impact of CXCL12 expression on the pancreatic beta cell prosurvival phenotype initiated this study. Our aim was to provide novel insight into the regulation of rat CXCL12 gene (Cxcl12) transcription. The roles of poly(ADP-ribose) polymerase-1 (PARP-1) and transcription factor Yin Yang 1 (YY1) in Cxcl12 transcription were studied by examining their in vitro and in vivo binding affinities for the Cxcl12 promoter in a pancreatic beta cell line by the electrophoretic mobility shift assay and chromatin immunoprecipitation. The regulatory activities of PARP-1 and YY1 were assessed in transfection experiments using a reporter vector with a Cxcl12 promoter sequence driving luciferase gene expression. Experimental evidence for PARP-1 and YY1 revealed their trans-acting potential, wherein PARP-1 displayed an inhibitory, and YY1 a strong activating effect on Cxcl12 transcription. Streptozotocin (STZ)-induced general toxicity in pancreatic beta cells was followed by changes in Cxcl12 promoter regulation. PARP-1 binding to the Cxcl12 promoter during basal and in STZ-compromised conditions led us to conclude that PARP-1 regulates constitutive Cxcl12 expression. During the early stage of oxidative stress, YY1 exhibited less affinity toward the Cxcl12 promoter while PARP-1 displayed strong binding. These interactions were accompanied by Cxcl12 downregulation. In the later stages of oxidative stress and intensive pancreatic beta cell injury, YY1 was highly expressed and firmly bound to Cxcl12 promoter in contrast to PARP-1. These interactions resulted in higher Cxcl12 expression. The observed ability of PARP-1 to downregulate, and of YY1 to upregulate Cxcl12 promoter activity anticipates corresponding effects in the natural context where the functional interplay of these proteins could finely balance Cxcl12 transcription.
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Affiliation(s)
- Jelena Marković
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Nevena Grdović
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Svetlana Dinić
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Teodora Karan-Djurašević
- Laboratory for Molecular Hematology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Uskoković
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Jelena Arambašić
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Mirjana Mihailović
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Sonja Pavlović
- Laboratory for Molecular Hematology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Goran Poznanović
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
| | - Melita Vidaković
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Belgrade, Serbia
- * E-mail:
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Mihailović V, Mihailović M, Uskoković A, Arambašić J, Mišić D, Stanković V, Katanić J, Mladenović M, Solujić S, Matić S. Hepatoprotective effects of Gentiana asclepiadea L. extracts against carbon tetrachloride induced liver injury in rats. Food Chem Toxicol 2013; 52:83-90. [DOI: 10.1016/j.fct.2012.10.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 10/24/2012] [Accepted: 10/26/2012] [Indexed: 12/18/2022]
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Arambašić J, Mihailović M, Uskoković A, Dinić S, Grdović N, Marković J, Poznanović G, Bajec D, Vidaković M. Alpha-lipoic acid upregulates antioxidant enzyme gene expression and enzymatic activity in diabetic rat kidneys through an O-GlcNAc-dependent mechanism. Eur J Nutr 2012; 52:1461-73. [PMID: 23064900 DOI: 10.1007/s00394-012-0452-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 09/26/2012] [Indexed: 12/30/2022]
Abstract
PURPOSE The combined hyperglycemia lowering and antioxidant actions of α-lipoic acid (LA) contribute to its usefulness in preventing renal injury and other diabetic complications. The precise mechanisms by which LA alters diabetic oxidative renal injury are not known. We hypothesized that LA through its hypoglycemic effect lowers O-GlcNAcylation which influences the expression and activities of antioxidant enzymes which assume important roles in preventing diabetes-induced oxidative renal injury. METHODS An experimental model of diabetes was induced in rats by the administration of 40 mg/kg streptozotocin (STZ) intraperitoneally (i.p.) for five consecutive days. LA was applied at a dose of 10 mg/kg i.p. for 4 weeks, starting from the last day of STZ administration. RESULTS An improved glycemic status of LA-treated diabetic rats was accompanied by a significant suppression of oxidative stress and a reduction of oxidative damage of lipids, proteins and DNA. LA treatment normalized CuZn-superoxide dismutase (SOD) and catalase activities in renal tissue of diabetic rats. These changes were allied with upregulated gene expression and lower levels of O-GlcNA glycosylation. The accompanying increase in MnSOD activity was only linked with upregulated gene expression. The observed antioxidant enzyme gene regulation was accompanied by nuclear translocation of Nuclear factor-erythroid-2-related factor 2 (Nrf2), enhanced expression of heat shock proteins (HSPs) and by reduction in O-GlcNAcylation of HSP90, HSP70, and extracellular regulated kinase and p38. CONCLUSION α-Lipoic acid administration activates a coordinated cytoprotective response against diabetes-induced oxidative injury in kidney tissue through an O-GlcNAc-dependent mechanism.
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Affiliation(s)
- Jelena Arambašić
- Department of Molecular Biology, Institute for Biological Research, University of Belgrade, Bulevar despota Stefana 142, 10060, Belgrade, Serbia
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Matić S, Stanić S, Bogojević D, Vidaković M, Grdović N, Arambašić J, Dinić S, Uskoković A, Poznanović G, Solujić S, Mladenović M, Marković J, Mihailović M. Extract of the plant Cotinus coggygria Scop. attenuates pyrogallol-induced hepatic oxidative stress in Wistar rats. Can J Physiol Pharmacol 2011; 89:401-11. [PMID: 21770795 DOI: 10.1139/y11-043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To examine the protective potential of the Cotinus coggygria Scop. methanol extract, Wistar rats were treated with the hepatotoxic compound pyrogallol, which possesses a potent ability to generate free radicals and induce oxidative stress. The ability of the extract to counteract the oxidative stress was examined in rats that were injected with the extract intraperitoneally (500 mg·(kg body weight)(-1)) either 2 or 12 h before the pyrogallol treatment. The extract possesses a reducing activity in vitro and an ability to chelate the ferrous ion both in vivo and in vitro. Application of the extract prior to pyrogallol treatment led to a decrease in the levels of thiobarbituric acid-reactive substances, aspartate aminotransferase, and alanine aminotransferase, increased activities of antioxidant enzymes and attenuation of DNA damage, as well as increased Akt activity and inhibition of NF-κB protein expression. Treatment with the extract 12 h prior to pyrogallol administration was more effective in suppressing pyrogallol-induced oxidative damage than the 2 h pretreatment. Extract administration promoted an increase in acute phase reactants haptoglobin and α(2)-macroglobulin that was short of a full-fledged acute phase response. Administration of the extract considerably improved the markers of oxidative stress, thus revealing a potential hepatoprotective activity. Our results suggest that Akt activation, NF-κB inhibition, and induction of the acute phase play important roles in mediating hepatic protection by the extract. The greater effectiveness of the 12 h pretreatment with extract points to the important role that preconditioning assumes in improving resistance to subsequent exposure to oxidative stress.
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Affiliation(s)
- Sanja Matić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Serbia.
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Arambašić J, Poznanović G, Ivanović-Matić S, Bogojević D, Mihailović M, Uskoković A, Grigorov I. Association of the glucocorticoid receptor with STAT3, C/EBPβ, and the hormone-responsive element within the rat haptoglobin gene promoter during the acute phase response. IUBMB Life 2010; 62:227-36. [DOI: 10.1002/iub.313] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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