Activity of (-)-Epigallocatechin 3-O-Gallate against Oxidative Stress in Rats with Adenine-Induced Renal Failure

Takako Nakagawa, Takako Yokozawa*, Mitsuyo Sano, Shigeya Takeuchi, Mujo Kim, Shinsuke Minamoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Methylguanidine (MG) is widely recognized as a strong uremic toxin. The hydroxyl radical (•OH) specifically plays an important role in the pathway of MG production from creatinine (Cr). In this study, we investigated whether oral administration of (-)-epigallocatechin 3-O-gallate (EGCg) suppresses MG production in rats with chronic renal failure after intraperitoneal Cr injection. MG production from Cr was significantly increased in rats with adenine-induced renal failure, which was more vulnerable to oxidative stress, compared with that in normal rats. However, oral administration of EGCg 30 min before and after Cr injection effectively inhibited MG production. Our findings suggest that EGCg, an excellent antioxidant from green tea, exerts protective activity in rats with chronic renal failure, resulting in suppression of Cr oxidation influenced by •OH.

Original languageEnglish
Pages (from-to)2103-2107
Number of pages5
JournalJournal of Agricultural and Food Chemistry
Volume52
Issue number7
DOIs
StatePublished - 2004/04/07

Keywords

  • (-)-Epigallocatechin 3-O-gallate
  • Chronic renal failure
  • Creatinine
  • Hydroxyl radical
  • Methylguanidine

ASJC Scopus subject areas

  • General Chemistry
  • General Agricultural and Biological Sciences

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