title: Comparative effects of vitamin E and kolaviron (a biflavonoid from Garcinia kola) on carbon tetrachloride-induced renal oxidative damage in mice.
abstract: It became evident in this study that carbon tetrachloride (CCl4), can induce renal oxidative damage. The hepatoprotective effects of vitamin E (Vit. E) and kolaviron (KV), a biflavonoid complex from the seeds of Garcinia kola are well documented. The present study was designed to investigate and compare the renal protective effects of Vit. E and KV in mice given CCl4 (1.2 g kg(-1)) intra-peritoneally thrice a week for two weeks. CCl4 caused a marked increase in serum and renal lipid peroxidation (LPO) by 106 and 225%, respectively. Treatment with KV at 100 and 200 mg kg(-1) and Vit. E at 100 mg kg(-1) significantly (p < 0.05) decreased the CCl4-mediated increase in LPO. Furthermore, CCl4-intoxication decreased the levels of renal reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) by 44, 56 and 43%, respectively. Treatment with KV and Vit. E significantly (p < 0.05) ameliorated the GSH and SOD levels. Specifically, KV at 100 and 200 mg kg(-1) increased GSH by 32 and 27% and SOD levels by 50 and 53%, respectively. Likewise, treatment with Vit. E increased GSH and SOD levels by 31 and 53%, respectively. Effects on markers of renal functions showed that CCl4-intoxication significantly (p < 0.05) elevated serum urea and creatinine by 287 and 186%, respectively. While treatment with Vit. E decreased serum urea and creatinine by 60 and 55%, respectively, KV produced insignificant (p > 0.05) effect on these parameters. This study found KV unable to protect against CCl4-induced renal damage but confirmed the potency of Vit. E to enhance recovery from renal oxidative damage.
authors.affiliation: Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
authors.forename: O A
authors.initials: OA
authors.lastname: Adaramoye
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000378:metabolism / Q000627:therapeutic use*; D002251:Carbon Tetrachloride / Q000633:toxicity*; D002374:Catalase / Q000378:metabolism; D005419:Flavonoids / Q000737:chemistry / Q000627:therapeutic use*; D029763:Garcinia kola / Q000737:chemistry*; D005978:Glutathione / Q000378:metabolism; D006801:Humans; D007668:Kidney / Q000378:metabolism / Q000473:pathology; D007674:Kidney Diseases / Q000139:chemically induced / Q000188:drug therapy / Q000473:pathology; D015227:Lipid Peroxidation; D008297:Male; D051379:Mice; D015394:Molecular Structure; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry / Q000627:therapeutic use*; D011897:Random Allocation; D013482:Superoxide Dismutase / Q000378:metabolism; D014810:Vitamin E / Q000627:therapeutic use*
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D010936:Plant Extracts; D014810:Vitamin E; D002251:Carbon Tetrachloride; D002374:Catalase; D013482:Superoxide Dismutase; D005978:Glutathione; C045492:kolaviron