果糖二磷酸钠镁对大鼠脑缺血/再灌注损伤的保护作用

目的 :研究果糖二磷酸钠镁对大鼠脑缺血/再灌注引起脑损伤的保护作用。方法 :自大鼠颈总动脉插入尼龙线栓栓塞大脑中动脉 ,造成大鼠脑缺血 ,缺血1h后拔出线栓实现再灌注。脑缺血10min后给予400mg/kg 果糖二磷酸钠镁 (FDPM )或400mg/kg1 ,6—二磷酸果糖 (FDP)或30mg/kg 硫酸镁 (MgSO4) ,分别于脑缺血1h再灌注2h、5h、23h时进行神经病学评分 ,并于脑缺血1h再灌注23h时测定脑梗塞面积及脑组织丙二醛 (MDA)含量 ,观察大鼠脑组织病理学变化。结果 :与模型组相比 ,FDPM组明显减低脑缺血/再灌注大鼠神经病学评分 ,缩小脑梗塞面积 ,降低脑组织MDA含量 ,减轻脑组织的病理改变 ,其作用强于FDP组和MgSO4 组。结论 :FDPM可显著保护大鼠脑缺血/再灌注引起的脑损伤。

Protective Effects of Sodium Magnesium Fructose Diphosphate on Brain Damage of Induced by Focal Cerebral Ischemia and Reperfusion in Rats

OBJECTIVE:To study the protective effects of sodium magnesium fructose diphosphate(FDPM)on brain damage induced by ischemiareperfusion in rats.METHODS:Rats were subjected to cerebral ischemia-reperfusion induced by inserting a nylon thread into internal carotid artery to block the origin of middle cerebral artery and removing the thread for recirculation.After1h ischemia,FDPM(400mg/kg),fructose-1,6-diphosphate(FDP,400mg/kg)or magnesium sulfate(MgSO 4 ,30mg/kg)was administrated10min after the onset of ischemia.Neurological scale was scored after1h ischemia and after2h,5h and23h recirculation,and infarction area,MDA content and histopathological change of brain tissue were studied after1h ischemia and after23h recirculation.RESULTS:Compared with model group,400mg/kg FDPM decreased neurological scale,diminished infarction area,reduced MDA content and relieved pathomorphological changes of brain tissue subjected to ischemia-reperfusion in rats.These effects were more powerful than those of FDP(400mg/kg)or MgSO 4 (30mg/kg).CONCL_ USION:FDPM(400mg/kg)could markedly prevent rats from brain damage after cerebral ischemia-reperfusion,and its effects were more potent than those of FDP(400mg/kg)or MgSO 4 (30mg/kg).