[Effects of tea polyphenol on blood lipid and antioxidation in vivo in aged rats].
OBJECTIVE
To study the ability of tea polyphenol to lowering blood lipid and antioxidation in the aged rats.


METHODS
The SD rats were divided into three groups, i.e., control group and two trial groups fed with 1% and 2% tea polyphenol for six weeks, respectively.


RESULTS
Tea polyphenol could reduce serum level of lipid peroxide and increase the ratio of high-density lipoprotein cholesterol (HDL-C) to total cholesterol (TC), and significantly lower serum level of lipid peroxide in rats. Activities of superoxide dismutase in red blood cells of rats fed with 2% tea polyphenol were significantly higher than those in control ones.


CONCLUSIONS
Tea polyphenol can enhance antioxidation in vivo in the aged rats.
D000375:Aging / Q000378:metabolism; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D005419:Flavonoids; D008054:Lipid Peroxides / Q000097:blood; D008075:Lipoproteins, HDL / Q000097:blood*; D008297:Male; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D011108:Polymers / Q000302:isolation & purification / Q000494:pharmacology*; D059808:Polyphenols; D051381:Rats; D017207:Rats, Sprague-Dawley; D013482:Superoxide Dismutase / Q000097:blood; D013662:Tea / Q000737:chemistry*