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http://dx.doi.org/10.3746/jkfn.2006.35.9.1185

Effects of Green Tea Powder on the Disorders of Lipid Metabolism and Hepatic Functions in Rats treated by 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)  

Lee, Joon-Ho (Dept. of consumers' Life Information, Chungnam National University)
Kim, Hyun-Sook (Dept. of consumers' Life Information, Chungnam National University)
Hwang, Seok-Youn (Dept. of Clinical Laboratory Science, Juseong College)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.35, no.9, 2006 , pp. 1185-1193 More about this Journal
Abstract
This study investigated the effects of green tea on the disorders of lipid metabolism, oxidative system and hepatic functions induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), using adult male rats (SD) for 3 weeks. These 36 animals were divided into four groups. TCDD ($50{\mu}g/kg$ BW) was intraperitoneally injected at the beginning of experiment. Green tea powder was added 1% or 3% levels in basal diets respectively. Relative weights of thymus were decreased about one-third of control group, but those of liver, brain and testis were significantly increased in rats treated TCDD. Neutrophill% and lymphocyte% by TCDD treatment was improved by green tea diets. In liver functional enzyme, elevation of glutamic oxaloacetic transaminase (GOT) and alkaline phosphatase (ALP) activities due to TCDD treatment was lowered by green tea diets. The concentrations of serum and liver lipids were significantly increased by TCDD treatment, however, those of serum and liver triglyceride tended to decrease by green tea diets. Fecal lipid excretion was increased in rats fed green tea diets. Especially, fecal total cholesterol level was significantly elevated by 3% green tea diets. The activities of superoxide dismutase (SOD) were increased in rats fed 3% green tea diets. Increment of benzphetamine N-demethylase (BPND) activity by TCDD treatment was declined by 1% green tea diets. These results indicate that green tea can exert improving effects on liver lipid accumulation and unfavorable hepatic functions, and elevate antioxidation.
Keywords
TCDD; green tea; lipid; SOD; BPND;
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