期刊
BRAIN RESEARCH
卷 944, 期 1-2, 页码 205-209出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0006-8993(02)02892-5
关键词
Spiraea japonica var. acuta; Rosaceae; spiramine T; cerebral ischemia-reperfusion; antioxidant enzyme; nitric oxide synthase
Spiramine T, an atisine-type diterpene alkaloid isolated from the Chinese herbal medicine Spiraea japonica var. acuta (Rosaceae), was shown to have neuroprotective effects on cerebral ischemia-reperfusion injury. In this study, the effects of spiramine T on antioxidant enzymes and nitric oxide production were evaluated in gerbils subjected to global forebrain ischemia (10 min) and reperfusion (5 days). Spiramine T (1.0 and 2.0 mg kg(-1) i.p.) markedly reduced the content of lipid peroxide (LPO), increased the glutathione peroxidase (GSH-PX) activity, and inhibited the increase of nitric oxidase (NOS) activity and nitric oxide production in the cortex during ischemia-reperfusion in gerbils. These results suggested that the neuroprotective effects of spiramine T were related to modulation of endogenous antioxidant enzymatic activities and reduction of the formation of nitric oxide. (C) 2002 Elsevier Science B.V. All rights reserved.
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