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ID:15119229
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页数:10页
时间:2018-08-01
《不同肺保护剂对兔体外循环手术肺保护的比较》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、不同肺保护剂对兔体外循环手术肺保护的比较作者:王建明,王明海,陶曙光,韩建刚,杨仕海【摘要】目的比较不同的肺保护剂在兔体外循环(Extracorporealcirculation,ECC)中的肺保护作用。方法将15只新西兰纯种大白兔(体重约2kg)随机分成三组,即沐舒坦(30mg/kg)组(组Ⅰ,n=5),抑肽酶(10万KIU/kg)组(组Ⅱ;n=5)和乌斯他丁(1万U/kg)组(组Ⅲ,n=5)。在开胸后和ECC停机30min后取兔肺组织,在光镜、电镜下观察肺组织术前、术后病理变化,并比较三组间的不同;同时将肺组织制成匀浆、并于ECC前、停机、
2、鱼精蛋白中和肝素后和停机后30min抽取兔血清测量肿瘤坏死因子(TNF-α)、白细胞介素8(IL-8)和丙二醛(MDA)的浓度变化。结果三组光镜下观察均可发现ECC后肺泡壁毛细血管扩张、出血;肺间质及肺泡腔内炎性细胞侵润。组Ⅲ上述改变明显少于其他二组;电镜观察发现可见肺泡Ⅱ型细胞微绒毛大部分消失;板层样小体呈空泡样变。组Ⅰ和组Ⅱ上述改变明显;术后肺组织匀浆中TNF-α含量组Ⅲ明显低于组Ⅰ和组Ⅱ;兔血清中TNF-α和IL-8停机后30min时组Ⅲ明显低于组Ⅰ和组Ⅱ。无论是肺组织匀浆还是血清中,MDA在三组间术前、后无明显差异。结论乌斯他丁较沐舒坦
3、和抑肽酶能更好地抑制炎性因子的产生。10【关键词】体外循环;急性肺损伤;乌司他丁 ComparisonofDifferentAgentsonLungProtectionofRabbitDuringtheExtracorporealCirculation Abstract:OBJECTIVETostudythelungprotectioninrabbitsonextracorporealcirculation(ECC)withdifferentagents.METHODSFiteenadultNewZealandrabbitsweredivi
4、dedrandomlyintothreegroups,eachgroup5rabbits.GroupⅠwasprimedwithAmbroxol(30mg/kg),groupⅡwithAprotinin(105KIU/kg),groupⅢwithUTI(104u/kg)inECCcircuit.Thelungtissueswereobtainedforstudyofhistologicalchangesbyopticalandelectronicmicroscopeonpre-andpost-ECC.Meanwhile,tumornecrosi
5、sfactor-α(TNF-α),interleukin-8(IL-8)andmalondialdehyde(MDA)inlungtissuesandplasmaweremeasuredonpre-,weaning-and30minutespost-ECC.RESULTSUndertheopticalmicroscope,theintraolveolaredema,leukocytesaggregationwereseeninallgroups,butallofthehistologicalchangeingroupⅢisnotseriousa
6、singroupⅡandI,especiallyfortheleukocytesaggregation;Underelectronicmicroscope,thediminishedlamellarbodiesintypeⅡalveolarepithelialcellscouldbeenseensignificantly;TNF-α10andIL-8ingroupⅢislowersignificantlythangroupⅠandⅡinthelungtissues;TNF-αandIL-8ingroupⅢinplasmaismuchlowert
7、hangroupⅠandⅡon30minutespost-ECC.ThereisnodifferenceforMDAinlungtissuesandplasma.CONCLUSIONUTIhasmoreeffectiveinhibitiononSIRandprotectionoflungfunctionthanAmbroxolandAprotinininexperimentedstudy. Keywords:Extracorporealcirculation;Acutelunginjury;Ulinastatin 体外循环(Extracor
8、porealcirculation,ECC)导致的全身炎性反应(SIR)和急性肺损伤(ALI)严重影响着手术结果。由于认识到ALI的主要因素是SIR,
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