摘要
目的探讨羟基红花黄色素A(hydroxysaffloryellowA,HYSA)对大鼠局灶性脑缺血后脑组织中诱导型一氧化氮合酶(iNOS)的影响。方法采用大脑中动脉线栓法造成大鼠局灶性脑缺血模型,应用免疫组织化学技术检测大鼠脑组织中iNOS的表达,并观察了对大鼠行为学和脑组织梗死面积的影响。结果HYSA高、中剂量能明显抑制脑缺血后而高度表达的iNOS量,同时减轻大鼠脑梗死面积和神经功能障碍。结论HYSA能下调脑缺血所致iNOS的异常表达,这可能是其治疗脑缺血性脑血管疾病的机制之一。
Aim This was to study the effects of hydroxysafflor yellow A （HYSA）on iNOS expression in rats following focal cerebral ischemia. Methods Rat cerebral ischemia-reperfusion injury was induced by middle cerebral artery occlusion. The expression levels of iNOS were examined using immunohistochemical method. The neurological outcome and the cerebral infarct area were evaluated. Results The expression levels of iNOS in HYSA groups were significantly lower than those in ischemic model group. Treatment with HYSA also decreased the cerebral infarct area and the neurological deficit score. Conclusion HYSA induced down regulation of iNOS expression, which may mediate the protective effect of HYSA on cerebral ischemia.
出处
《中国药理学通报》
CAS
CSCD
北大核心
2006年第9期1134-1137,共4页
Chinese Pharmacological Bulletin
