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时间:2020-05-23
《硫代乙酰胺诱导大鼠急性肝性脑病模型建立的用药时间研究.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、344一现代消化及介入诊疗2013年第18卷第6期ModemDigestion&Intervention2013,Vol·18,No·6一·论著·硫代乙酰胺诱导大鼠急性肝性脑病模型建立的用药时间研究谭琳玲潘锦瑶郑德俊马军宋雨鸿【摘要】目的通过硫代乙酰胺(TAA,300mg·。。·d-i)不同用药时间诱导A型肝性脑病,比较大鼠的行为学、生物化学以及组织学改变,探讨造模最适时间。方法将大鼠分为A、B、C、D四组,其中A组为正常对照组:B、C、D组用TAA(300mg·kg-1~d一.)分别连续灌胃2d、3d、4d,A组用相等量生理盐水灌胃4d。比较
2、各组大鼠行为学变化、脑功能评分、AHE的诱导率和致死率,并分析各组给药结束24h后血氨、ALT、AST、TBIL的差异结果C、D组比B组大鼠脑功能评分高,差异有统计学意义(P<0.0083);c、D组比B组诱导率高(P<0.0083),而D组比B、C组的大鼠致死率高,差异有统计学意义(P<0.0083);C、D组血氨及ALT、AST、TBIL肝功能指标比B组高,差异有统计学意义(P<0.0083);C、D组TAA用药后肝组织学观察炎症浸润、坏死、纤维化等损害最明显。结论300mg·kg·d的TAA连续灌胃3d,行为学改变显著,致死率较低,血氨较
3、高,肝功能损害明显,为TAA诱导大鼠急性肝性脑病适宜时间。【关键词】肝性脑病;急性肝性脑病;硫代乙酰胺;大鼠Thestudyonmedicationtimeofacutehepaticencephalopathymodelofthioacetamide-inducedratⅣLin—ling,PANJin-yao,ZHENGDe-jun,MAJun,SONGYu-hong.TheMunicipalFirstPeopleSHospitalofGuangzhou,GuangzhouMedicalCollege,Guangzhou510000【Abs
4、tract】0bjectiveToexploretheappropriatemedicationtimeofinducingacutehepaticen—cephalopathyofratsbydifferentmedicationtimeofthioacetamide(TAA,300mg‘kg·d。‘)tochangebehav—ioral,biochemicalandhistologicalstatus.MethodsTheanimalswerecategorizedin4groups(A,B,C,D)andAgroupwasnormalc
5、ontrolgroup.GastriclavagewasperformedwithTAA(300mg。kg·d)fortwodays,threedaysandfourdaysingroupB,C,Drespectively.Controlgroupwastreatedwithequalamountofphysio—logicalsalineforfourdays.Thebehaviorchanges,brainfunctionscore,AHEinducedmorbidityandmortalitywerecompared,andthediff
6、erencesofammonia,ALT,AST,TBILineachgroupwereanalyzed24hoursaftertheendofadministration.ResultThegradingscoresofbrainfunctioninCandDgroupswerehigherthaninBgroup(P<0.0083).TheinductionrateofCandDgroupswashigherthanthatofBgroup(P<0.0083),whilethedeathrateofDgroupwassignificantl
7、yhigherthanB,Cgroups(P<0.0083).Thelevelofammonia,ALT,AST,TBILinCandDgroupswashigherthaninBgroup<0.0083).HistologicalfindingsshowedthatCandDgroupswerebettertOinduceinflammation,necrosisandfibrosisintheliverofAHEanimals.Conclu-sionGastricgavagewithTAA(300mg·kg-1~d‘。)for3dayswa
8、stheappropriatemedicationtimetoinduceAHE.【Keywords】Hepaticencephalopathy;Ac
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