Korean J Nutr.  2008 Oct;41(7):602-611.

Effects of Green Tea on Weight Gain, Plasma and Liver Lipids and Lipid Peroxidation in Pair Fed Rats

Affiliations
  • 1Department of Food & Nutrition Science, Cheju National University, Jeju 692-756, Korea. jungkang@cheju.ac.kr
  • 2College of Natural Sciences Marine and Environment Researsh Institute, Cheju National University, Jeju 692-756, Korea.

Abstract

We compared antiobese, hypocholesterolemic, antiplatelet and antioxidant effect of 10% green tea powder and 3% green tea extract in rats pair fed 5% cholesterol diets. The final body weight was decreased significantly compared with the control (p < 0.05). Plasma and liver total cholesterol were lower in group of green tea powder or extract, but not statistically different. HDL cholesterol was increased significantly in group of green tea powder compared with the control or green tea extract (p < 0.05). Plasma triglyceride was significantly decreased in group of green tea extract compared with green tea powder, and green tea powder compared with the control respectively (p < 0.05). Liver triglyceride was significantly decreased in group of green tea powder or green tea extract compared with the control (p < 0.01). Platelet aggregations in the maximum and initial slope were not different among groups. Hemolysis was significantly lower in group of green tea powder compared with the control (p < 0.05). Plasma TBARS production was decreased in group of green tea extract compared with the control (p < 0.05). Na passive leak in intact cells was not different, but Na leak in AAPH treated cell was significantly decreased in group of green tea powder than the control (p < 0.05). The leak increase (delta Na Leak) after AAPH treatment was significantly decreased in groups of green tea powder and extract compared with the control (p < 0.05). Isotope excretion after 14C-cholesterol ingestion was significantly increased in group of green tea extract compared with the control or the green tea powder (p < 0.05). Consumption of green tea in powder or extract may give beneficial effects in weight control and plasma lipid profiles, impeding metabolic syndrome. More studies are needed to clarify what component of green tea and what mechanism are involved in antiobese and hypolipedemic actions of green tea.

Keyword

green tea; antiobese; hypolipidemic; antiplatelet aggregation RBC membrane stability; pair fed rats

MeSH Terms

Amidines
Animals
Antioxidants
Blood Platelets
Body Weight
Cholesterol
Cholesterol, HDL
Diet
Eating
Hemolysis
Lipid Peroxidation
Liver
Plasma
Rats
Tea
Thiobarbituric Acid Reactive Substances
Weight Gain
Amidines
Antioxidants
Cholesterol
Cholesterol, HDL
Tea
Thiobarbituric Acid Reactive Substances
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