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时间:2020-05-23
《链脲佐菌素诱导的高血糖对大鼠肾、肝及眼睛的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、·1o98·doi10.3969~.issn.1673—4254.2014.08.04JSouthMedUniv,2014,34(8):1098—1103基础研究链脲佐菌素诱导的高血糖对大鼠肾、肝及眼睛的影响张琪,刘亚千,陈华解放军总医院医学实验动物中心,北京100853摘要:目的通过不同剂量链脲作菌素(sTz)诱导1型糖尿病大鼠模型,探讨不同高血糖对脏器影响。方法实验分为STZ40mg/kg组,50mg/kg组,60mg/kg组,25mg/kg连续3次、每次间隔1d(25mg/kg3)组,空白对照组。给药后0、1、3、7、11、24、48、72h检测血糖,之后每3d测量1次,期间观察
2、大鼠一般情况,并于第9周进行血生化以及胰腺、肾、肝及眼睛病理检查。结果72h内血糖检测:STZ造模时血糖先轻微升高后降低之后再大幅度升高。50mg/kg和60mg/kg组出现给药后第3天死亡现象,存活鼠成模率分别为70%、80%、100%、100%。期间血糖和体质量呈负相关,血糖顺序为:40mg/kg<50mg/kg<25mg/kg*3<60mg/kg。40mg/kg组于第1O周出现白内障,其他实验组均于第8N出现白内障。第9N血生化检测发现40mWkg组insulin、C.Peptide、urea、UA、Cr、ALT、AST、TP、ALB正常,其它实验组均有波动。胰腺、肾、肝病理支持
3、上述改变。结论25mg/kg*3诱导高血糖最佳,其成模率高且高血糖稳定;高血糖的并发症的评估要将空腹和随机血糖相结合;不同的高血糖对肾、肝及眼睛影响不同,其中眼睛对高糖反应比较敏感,肾次之,肝影响最小。关键词:1型糖尿病;链脲佐菌素;高糖血症;OF发症Effectofhyperglycemiainducedbystrepzotozocinontheliver,kidneysandeyesinratsZHANGQi,LIUYaqian,CHENHuaAnimalExperimentCenter,ChinesePGeneralHospital,Beqing100853.ChinaAbstr
4、act:ObjectiveToinvestigatetheeffectofhyperglycemiainducedbydifferentdosesofstrepzotozocin(STZ)ontheliver,kidneysandeyesinrats.MethodsFiftySDratsweredividedequallyinto5groupstoreceiveintraperitonealiniectionswithasingledoseofSTZ(40,50,or60mg/kg),3dosesof25mg/kgSTZ(givenattheintervalof24h),ornotre
5、atment(blankcontro1).Thedynamicchangeofbloodglucosewasobservedwithin72hafterthefirstiniection.Bloodglucosewasthenmonitoredevery3daysandthegeneralconditionsoftheratswererecorded.Inthe9thweek,fastingbloodsampleswerecollectedforbiochemicalanalysisandthepancreas,kidne~liver,andeyewereexaminedforpath
6、ologies.ResultsWithin72hafterSTZection,bloodglucosefirstslightlyincreasedandthendecreasedandagainincreasedtomaintainahighleve1.Deathoccurredinratsreceivinginjectionswith50and60mg/kgSTZonthethirdday.Inthesurvivingratsinthe4STZ—injectedgroups,thesuccessrateofmodelingwas70%,89%,100%,and100%,respect
7、ively.Bloodglucoseshowedaninversecorrelationwiththebodyweightoftherats.Cataractwasobservedinthe10thweekinratsiniectedwith40mg/kgSTZandinthe8thweekintheothergroups.Inthe9thweek,theratsreceiving40mg/kgSTZshowednormalinsulin,C—
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