Induction of UDP-glucuronosyltransferase 1 (UDP-GT1) gene complex by green tea in male F344 rats

被引：41
作者：
Embola, CW
Sohn, OS
Fiala, ES
Weisburger, JH
机构：
[1] Amer Hlth Fdn, Valhalla, NY 10595 USA
[2] New York Med Coll, Dept Pathol, Valhalla, NY 10595 USA
来源：
FOOD AND CHEMICAL TOXICOLOGY | 2002年 / 40卷 / 06期
关键词：
green tea; metabolism; UDP-glucuronosyltransferase (UDP-GT); p-nitrophenol (p-NP); detoxification; microsomes;
D O I：
10.1016/S0278-6915(02)00022-4
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
Tea is one of the most frequently consumed beverages in the world, second only to water. Epidemiological studies have associated the consumption of green tea with a lower risk of several types of cancers, including stomach, oral cavity, esophagus, and lung. This paper deals with the mechanism of action of tea as an effective chemopreventive agent for toxic chemicals and especially carcinogens. UDP-glueuronosyltransferase (UDP-GT) activities towards p-nitrophenol were markedly increased (51.8% or 1.5-fold) in rats that consumed tea compared with the control animals on water. Induction of UDP-glucuronosyltransferase activity by tea may involve the UDP-GT1 (UGT1A) gene complex of the UDP-GT multigene family. Therefore, a major mechanism of tea as a chemopreventive agent is induction of the microsomal detoxification enzyme, UDP-glucuronosyltransferase. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：841 / 844
页数：4
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