刺五加注射液对大鼠大脑中动脉栓塞所致脑缺血损伤的保护作用_0.doc
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刺五加注射液对大鼠大脑中动脉栓塞所致脑缺血损伤的保护作用
刺五加注射液对大鼠大脑中动脉栓塞所致脑缺血损伤的保护作用作者:
路志红熊利泽王强郑玉张西京【关键词】脑缺血关键词:刺五加;注射剂;脑缺血;剂量-效应关系,药物摘要:目的探讨刺五加(AS)注射液对脑缺血性损伤的保护作用及量效关系.方法40只雄性SD大鼠,随机分为四组(各组n=10),即对照组和AS-2.5,AS-5,AS-7.5组,分别在缺血前腹腔注射生理盐水7.5mL和刺五加注射液2.5mL,5.0mL(均用生理盐水稀释至7.5mL),7.5mL.采用颈内动脉尼龙线线栓法致大脑中动脉栓塞(120min)模型,观察再灌注后24h时神经功能损害并取大脑行TTC染色以测量脑梗死容积.结果再灌注24h时神经功能损害评分,对照组为(2.20.8),明显高于各保护组:AS-2.5组(1.30.8)、AS-5.0组(1.20.8)、AS-7.5组(1.20.6),Plt;0.05.脑梗死容积对照组为(22066)mm3,明显大于各保护组[AS-2.5组为(11686)mm3,AS-5.0组为(12179)mm3,AS-7.5组为(10454)mm3],Plt;0.05.各保护组之间神经功能损害评分和脑梗死容积无明显差别.结论刺五加注射液对短暂性局灶性脑缺血损伤呈非剂量依赖性保护作用.Keywords:acanthopanaxsenticosus;injection;cerebralis-chemia;dose-responserelationship,drugAbstract:AIMToinvestigatetheprotectiveeffectofacan-thopanaxsenticosus(AS)injection,anintravenousdrugmadefromtraditionalChineseherb,ontransientfocalcere-bralischemicinjuryinrats.METHODSFortymaleSDratswererandomlydividedinto4groups:Controlgroup(n=10)receivednopharmacologicinterventionbutnormalsaline7.5mL,GroupAS-2.5(n=10),AS-5(n=10),AS-7.5(n=10)receivedintraperitoneallyacanthopanaxsenticosusinjec-tion2.5mL,5mL(dilutedto7.5mLwithnormalsaline)and7.5mLrespectivelyjustbeforemiddlecerebralarteryoc-clusion(MCAO)with3-0nylonmonofilamentfor120min.Theneurologicaloutcomewasevaluatedat24hafterreperfu-sion.TheinfarctvolumewasthenassessedbyTTCstaining.RESULTSTheneurologicdeficitscore(NDS)ofGroupAS-2.5(1.30.8),GroupAS-5(1.20.8)andGroupAS-7.5(1.20.6)at24hafterreperfusionwaslowerthanthatoftheControlgroup(2.20.8),Plt;0.05.TheinfarctvolumeoftheControlgroup(22066)mm3wassignificantlylargerthanthoseoftheotherthreegroups[AS-2.5:(11686)mm3,AS-5.0:(12179)mm3,AS-7.5:(10454)mm3]at24hafterreperfusion.Therewasnodifferencea-mongAS-treatedgroupsforNDSandinfarctvolume.CON┐CLUSIONAcanthopanaxsenticosusinjectionsignificantlyreducesneurologicinjuryinducedbytransientMCAOw