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1、門(mén)靜脈高壓癥大鼠阻斷門(mén)靜脈和下腔靜脈后腎臟損傷的研究作者:吳鳳東竇劍趙鑫任貴軍邸恩昌【摘要】目的:探討門(mén)靜脈高壓癥大鼠阻斷門(mén)靜脈和下腔靜脈1h后腎臟損傷的情況。方法:Wistar大鼠隨機(jī)分為對(duì)照組、門(mén)脈高壓癥對(duì)照組和實(shí)驗(yàn)組。實(shí)驗(yàn)組先建立可復(fù)性門(mén)靜脈高壓癥大鼠模型,3周后按阻斷下腔靜脈和肝門(mén)1h后不同的再灌注時(shí)間0h、6h、12h、24h、48h、72h和7d分為7組。于相應(yīng)時(shí)間點(diǎn)查血清ALT、BIL、BUN、Cr水平,腎臟和肝臟組織光鏡以及腎臟組織透射電鏡檢查。結(jié)果:實(shí)驗(yàn)組大鼠血BUN、Cr再灌注后6h開(kāi)始升高,12~24h達(dá)高
2、峰,此后漸下降,72h已基本恢復(fù)正常。腎臟損害主要以近曲腎小管上皮細(xì)胞為主,12h、24h損傷達(dá)到高峰,可見(jiàn)核固縮、核碎裂,但基底膜保留完好。48h開(kāi)始出現(xiàn)修復(fù)現(xiàn)象。7d后明顯修復(fù)。結(jié)論:門(mén)靜脈高壓癥大鼠阻斷門(mén)靜脈和下腔靜脈后,腎小管上皮細(xì)胞有明顯損傷,但是損傷是可逆的。【關(guān)鍵詞】高血壓門(mén)靜脈?腔靜脈,下?腎?大鼠,WistarThestudyofrenalinjuryinportalhypertensiverataftertheocclusionofportalvEinandinferiorvenacava【ABSTRACT】
3、Objective:ToinvestigatetherenalinjuryofportalhypertensiveratafteronehourofocclusionofportalvEInandinferiorvena:HealthymaleWistarratsweretakenrandomlyasnormalcontrol、portalhypertensivecontrolandtrialrecoverableportalhypertensivemodelwasinducedweekslater,1modelratswere
4、takenrandomlyasportalhypertensivecontrolgroup,othershadanotheroperationandweredividedrandomlyinto0,6h,12h,24h,48h,72h,7dgroupaccordingtodifferentreperfusiontimeafter1hourofocclusionofportalveinandinferiorvenathecorrespondingtimepointsafterreperfusion,theexaminationsb
5、elowweredone:serumALT,TBIL,BUN,Crconcentrations;morphologicalchangesofliverandkidney,theultrastructureofrenal:SerumBUNandCrintrailgroupreachedtheirpeakvalue12~2hoursafterreperfusion,thendecreasedgradually,andreturnedtonormalhoursaftermaininjuryofkidneywaslocatedinpro
6、ximaltubularepithelialcell,itpeakedat1hoursandhoursafterreperfusion,thesporadickaryopyknosisandkaryorrhexiscouldbeseen,butthebasementmembranepreservedlater,therestorationcouldbelateritrestored:Thereareobviousinjuryintubularepithelialcellintheportalhypertensiveratafte
7、r1hourofocclusionofportalveinandinferiorvenatheinjuryofkidneyisreversible.【KEYWORDS】Hypertension,portal?Venacava,inferior?Kidney?Rats,Wistar經(jīng)典非轉(zhuǎn)流肝移植病人,由于需暫時(shí)阻斷下腔靜脈,腎臟要經(jīng)歷缺血、淤血以及開(kāi)放后再灌注的過(guò)程。本實(shí)驗(yàn)旨在通過(guò)研究門(mén)靜脈高壓癥大鼠阻斷門(mén)靜脈和下腔靜脈1h后腎臟損傷的情況,探討該情況下腎臟損傷的特點(diǎn)及恢復(fù)規(guī)律,為臨床提供參考。1材料與方法動(dòng)物選擇及分組健康雄性
8、Wistar大鼠,體重250~300g,共135只。隨機(jī)分為對(duì)照組、門(mén)脈高壓癥對(duì)照組和實(shí)驗(yàn)組。實(shí)驗(yàn)組按阻斷下腔靜脈和肝門(mén)60min后不同的再灌注時(shí)間分為0h、6h、12h、24、48h、72h、7d7個(gè)組。全實(shí)驗(yàn)共9組,每組大鼠15只??蓮?fù)性門(mén)靜脈高壓癥大鼠模型