title: Bergenin attenuates renal injury by reversing mitochondrial dysfunction in ethylene glycol induced hyperoxaluric rat model.
abstract: Bergenin, isolated from Bergenia ligulata is a potent antioxidant and antilithiatic agent. Present work was designed to establish the biochemical role of bergenin on mitochondrial dysfunction in the ethylene glycol induced hyperoxaluric rat model. Bergenin was administrated at a dose of 10mg/kg body wt i.p. from 14th day of establishing the 28 days hyperoxaluria rat model. α-Tocopherol was given as positive control at a dose of 100mg/kg body wt i.p. Mitochondrial dysfunction was studied by evaluating the activities of respiratory chain complexes, mitochondrial membrane potential and reactive oxygen species. Histopathological analysis of the kidney tissue was done after Pizzolato staining. Also, expression of monocyte chemoattractant protein -1(MCP-1) and kidney injury marker protein (KIM-1) were studied and the levels of IL-1β were evaluated in kidney tissue homogenate. Mitochondrial dysfunction during stone crystallization was evident by decreased activities of electron transport chain complexes I, II and IV and augmented mitochondrial oxidative stress in hyperoxaluric rats. Bergenin treatment significantly (P<0.05) restored the activities of these complexes. Moreover, it curtailed the lipid peroxidation and up regulated antioxidant levels, ameliorating the state of mitochondrial dysfunction. The protective role of bergenin was also reinforced by reducing IL-1β production and expression of KIM-1 and MCP-1 in the renal tissue. The findings of the present study provide evidence that bergenin exerted protective effects in hyperoxaluria through mitochondrial protection that involves attenuation of oxidative stress. Hence, it presented itself as an effective remedy in combating urolithiasis.
authors.affiliation: Department of Biochemistry, Panjab University Chandigarh, 160014, India.
authors.forename: Deepika
authors.initials: D
authors.lastname: Aggarwal
authors.affiliation: Department of Biochemistry, Panjab University Chandigarh, 160014, India.
authors.forename: Diksha
authors.initials: D
authors.lastname: Gautam
authors.affiliation: Department of Biochemistry, Panjab University Chandigarh, 160014, India.
authors.forename: Minu
authors.initials: M
authors.lastname: Sharma
authors.affiliation: Department of Biochemistry, Panjab University Chandigarh, 160014, India. Electronic address: singlask.biochem@gmail.com.
authors.forename: S K
authors.initials: SK
authors.lastname: Singla
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology / Q000627:therapeutic use; D001578:Benzopyrans / Q000494:pharmacology* / Q000627:therapeutic use; D015415:Biomarkers / Q000378:metabolism; D018932:Chemokine CCL2 / Q000235:genetics / Q000378:metabolism; D003404:Creatinine / Q000378:metabolism; D019610:Cytoprotection / Q000187:drug effects; D004195:Disease Models, Animal; D019855:Ethylene Glycol / Q000494:pharmacology*; D005786:Gene Expression Regulation / Q000187:drug effects; D006959:Hyperoxaluria / Q000139:chemically induced* / Q000188:drug therapy / Q000378:metabolism / Q000473:pathology*; D053583:Interleukin-1beta / Q000378:metabolism; D007668:Kidney / Q000187:drug effects* / Q000293:injuries* / Q000378:metabolism / Q000473:pathology; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D008297:Male; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D008928:Mitochondria / Q000187:drug effects* / Q000473:pathology; D010084:Oxidation-Reduction / Q000187:drug effects; D018384:Oxidative Stress / Q000187:drug effects; D051381:Rats; D017207:Rats, Sprague-Dawley; D017382:Reactive Oxygen Species / Q000378:metabolism
chemical_list: D000975:Antioxidants; D001578:Benzopyrans; D015415:Biomarkers; C491766:Ccl2 protein, rat; D018932:Chemokine CCL2; D053583:Interleukin-1beta; D017382:Reactive Oxygen Species; D003404:Creatinine; D007770:L-Lactate Dehydrogenase; D019855:Ethylene Glycol; C006741:bergenin
keywords: Bergenin; Hyperoxaluria; Mitochondrial dysfunction; Oxidative stress; Renal injury