禁食对大鼠肝脏缺血再灌注损伤影响论文

禁食对大鼠肝脏缺血再灌注损伤影响论文

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大小:17.34 MB

页数:45页

时间:2018-07-19

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1、groupisglucosesupplementedgroup,ratsinthisgroupwithfreeaccesstoa40%glucosesolutiononly.Underetherinhalationanesthesia,theabdomenwasopenedthroughamidlineincisionandlefthepaticbloodvesselwereoccludedwithanontramaticmicrovascularclipinducingischemiao

2、ftheleftlateralandmedianlobes.Blood(2m1)wascollectedfrominferiorvenacavaatthetimeofbeforeischemia,after1hourofischmia,and1hour,8hourafterreperfusionrespectivelyformeasurementofserumalaninetransaminase(ALT),aspartatetransaminase(AST),malonicaldehyde(MD

3、A).Inthemeantime,asmallpieceoflivertissueWasincisedfromTheheartoftheischemiahepaticlobestodeterminehepaticGSHandglycogencontentsrespectively.Paraffinsectionofhepatictissuealsoweremade.Results.ThisstudyfoundtheserumALT.ASTandMDAweresignificantlyhi

4、gherwhilehepaticglutathionewerelowerin4-day-fastedratsthaninfedratswhen1hourischemiaandafterreperfusion(P<0.oi).Feeding4-day-fastedratswith40%glucoseinsteadofwaterelevatedliverglycogenandsignificantlyreducedhepatocellular两uryasmeasuredbyserumALT

5、,ASTlevelat1hourischemia(P<O.01),butthereiSnoeffectwithserumAIJ,AST,MDA,hepaticGSHcontentsduringreperfusionperiod(p>0.05).Lightmicrographsshowedminimalchangs,consistingmainlyofoccasionalhepatocyteswithvacuolizationorballooningatendof1hourischemi

6、aperiodinallliverspecimens.Smallfociofcellnecrosis,areasofhepatocellularvacuolarchange,andmildsinusoidalcongestionwereobservedinallthreegroupsafter1hourreperfusion.Thishistoricalfindingismoreaggravatingtoshowneutrophilrecruitmentafter8hourreperfusion,

7、butthereisnoessentialchange.Inall,thereisnoobviousdifferenceamonglightmicrographsfindingofthreegroupsatthesamephase.Conclusions.Theseresultsshowthatfastingexacerbateshepatocellular^injurywhen1hourischemiaandafterreperfusion,andglucosefeedingisgood

8、forlightenninghcpatocellularinjurywheniscemiabuthaslittlehelpforreperfusioninjury.Thisarticlethinksthathepaticiseemiareperfusioninjuryisacomplicatedmultifactorandmultistageprocess.Whetherfastingforalongtimewould

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