In vitro and in vivo antioxidant activity of the ethanolic extract from Meconopsis quintuplinervia
2012
He, Jingsheng | Huang, Bo | Ban, Xiaoquan | Tian, Jun | Zhu, Ling | Wang, Youwei
AIMS OF THE STUDY: Meconopsis quintuplinervia, a medicinal herb endemic to the Tibetan region, is used to treat hepatitis. The aim of this study is to evaluate the antioxidant potential of the ethanolic extract of this herb using different assays. MATERIALS AND METHODS: The antioxidant capacity of Meconopsis quintuplinervia was investigated using various established in vitro systems. An in vivo study of carbon tetrachloride (CCl₄)-induced antioxidant activity in mice was also conducted by examining the levels of malondialdehyde (MDA) and the activities of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH). RESULTS: The extract showed strong in vitro antioxidant ability. In the in vivo study, CCl₄-induced oxidative stress caused significant decreases in the SOD, CAT, and GSH levels and a significant increase in the MDA level, most of which were significantly reversed (except for SOD in the liver.) by treatment with the extract and standard Vitamin E. CONCLUSION: This study clearly indicates that the ethanolic extract of Meconopsis quintuplinervia is a valuable source of natural antioxidants. These findings provide scientific support for the traditional use of this herb as a Tibetan medicine for liver diseases.
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