期刊
NATURAL PRODUCT RESEARCH
卷 25, 期 8, 页码 850-856出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786419.2010.533669
关键词
EGCG; resveratrol; cisplatin; nephrotoxicity; renal protection
资金
- graduate Mansoura University [03/2007]
Epigallocatechin-gallate (EGCG) and resveratrol (RSVL) are two of the most promising natural medicines. We verified their capacity to ameliorate cisplatin (CP)-induced disruption of renal glomerular filtration rate (GFR) in rats, and sought the mediatory involvement of lipid peroxidation (malondialdehyde [MDA]-level) and inflammatory cytokine (TNF-) therein. CP (10 mg kg-1), a single i.p. dose, disrupted GFR (11-fold-rise in proteinuria, 2-5-fold rise in serum creatinine/urea levels) after 7 days, and killed all animals after 10 days. Kidney-homogenates from CP-treated rats displayed higher MDA and TNF-, but lower reduced-glutathione (GSH) levels. Rats treated with EGCG (50 mg kg-1, but not 25 mg kg-1) had no fatalities and showed significantly-recovered GFR; while their kidney-homogenates had markedly reduced MDA, TNF- and enhanced GSH levels at 7 days. Conversely, RSVL or quercetin (25, 50 mg kg-1) neither improved GFR nor reduced (MDA)/TNF- levels after 7 days. Resuming treatment with 50 mg kg-1 for 10 days rescued only 25% of animals (p 0.05). Correlation studies showed a significant association between creatinine level, and each of MDA (r = 0.91), GSH (r = -0.87), and TNF- (0.91). The study showed for the first time that EGCG, unlike RSVL, can protect against CP-induced nephrotoxicity. At the molecular level, CP triggers a high level of oxidative stress and systemic inflammation, events that were all abrogated with EGCG; better than RSVL or quercetin.
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