title: [Effect of tea polypheonls and ascorbic acid on the activity of antioxidant enzymes in rats with experimental silicosis].
abstract: To explore the effect of tea polypheonls (TP) combined with ascorbic acid on the activity of antioxidant enzymes of rats induced by silica, the activities of nitric oxide synthase (NOS), glutathione peroxidase (GSH-PX) and superoxide dismutase (SOD) were determined. Compared with the normal saline control group, the activities of SOD and NOS of the silica-induced group increased (P < 0.05), but the activity of GSH-PX was gradually decreased. The activities of SOD and NOS decreased and GSH-PX increased in the intervention group. It is concluded that TP combined with ascorbic acid can alleviate the abnormal change of antioxidant enzymes in rats induced by silica.
authors.affiliation: North China Coal Medical College, Tangshan 063000, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
authors.forename: Yingli
authors.initials: Y
authors.lastname: Liu
authors.forename: Qingzhao
authors.initials: Q
authors.lastname: Li
mesh_terms: D000818:Animals; D001205:Ascorbic Acid / Q000302:isolation & purification / Q000494:pharmacology*; D005419:Flavonoids; D005979:Glutathione Peroxidase / Q000378:metabolism; D008297:Male; D019001:Nitric Oxide Synthase / Q000378:metabolism*; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D011108:Polymers / Q000302:isolation & purification / Q000494:pharmacology*; D059808:Polyphenols; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D012829:Silicosis / Q000201:enzymology*; D013482:Superoxide Dismutase / Q000378:metabolism; D013662:Tea / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D010636:Phenols; D011108:Polymers; D059808:Polyphenols; D013662:Tea; D005979:Glutathione Peroxidase; D019001:Nitric Oxide Synthase; D013482:Superoxide Dismutase; D001205:Ascorbic Acid