论著

血塞通联合右美托咪定对老龄大鼠脑缺血再灌注损伤的保护效果研究

Effects of Xuesaitong combined with dexmedetomidine on cerebral ischemia-reperfusion injury in elderly rats

:918-923
 
       目的   评价血塞通联合右美托咪定对脑缺血再灌注损伤大鼠的脑保护效果。方法   选择老龄雄性Wistar大鼠50只,随机分为假手术(C)组、脑缺血再灌注(R)组、血塞通(P)组、右美托咪定(D)组,血塞通联合右美托咪定(PD)组,每组各10只。根据组别给予不同药物,行神经行为学测试;于第3、7天,测量脑梗死面积、脑水含量,以及超氧化物歧化酶(Superoxide dismutase,SOD)、谷胱甘肽过氧化酶(Glutathione peroxidase,GSH-PX)活性测定。结果   给药后第3、5、7天,与P、D组相比,PD组神经行为学评分改善更加显著(P<0.001);给药后第3、7天,与P组相比,PD组脑梗死面积、脑水含量均降低(P=0.01,P=0.002),SOD、GSH-PX活性升高显著(P=0.03,P=0.001);与D组相比,PD组脑梗死面积、脑水含量也显著降低(P<0.01,P=0.008);SOD、GSH-PX活性升高显著(P=0.009,P<0.001)。结论   血塞通联合右美托咪定较单独应用药物,能显著减轻缺血再灌注损伤造成的脑损害,具有脑保护作用。
       Objective  To explore the effects of Xuesaitong combined with dexmedetomidine on cerebral ischemia-reperfusion in elderly rats.Methods  Fifty elderly male Wistar rats were randomly divided into 5 groups:sham operation(C)group,cerebral ischemia-reperfusion(R)group,Xuesaitong(P)group,dexmedetomidine(D)group,Xuesaitong combined with dexmedetomidine(PD)group.Xuesaitong was given in group P,dexmedetomidine was given in group D,and normal saline was given in group C and group R,continuously for 7 days.After 3- and 7-day treatment,the brain of rats was dissected out to assay the area of cerebral infarction,degree of cerebral edema,superoxide dismutaseSOD) and glutathione peroxidaseGSH-PX) activity.Results When compared PD group with P and D group,neurobehavioral score was lower at 3,5,7 day(P<0.001);area of cerebral infarction,degree of cerebral edema were less(P=0.01,P=0.002),activity of SOD and GSH-PX were higher at 3,7 days(P=0.03,P=0.001)respectively.When compared PD group with D group,area of cerebral infarction,degree of cerebral edema were less(P<0.01,P=0.008),activity of SOD and GSH-PX were higher at 3,7 days(P=0.009,P<0.001)respectively.Conclusions  The combination of Xuesaitong and dexmedetomidine can obviously reduce the damage by cerebral ischemia-reperfusion in elderly rats and has brain protective effects.
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