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1、讨论大鼠部分胃切除对残肝再生影响的实验研究王华a,鄢业鸿b(a.江西中寰医院普外科;b.南昌大学第一附属医院移植科南昌330038)摘要:目的 用实验动物模型同时切除肝脏、胃,以探讨部分胃切除对残肝再生的影响。方法 选用雄性SD大鼠54只,随机分成68%肝叶切除组(A组:n=18),70%胃体部切除并68%肝叶切除组(B组:n=18),胃窦部切除并68%肝叶切除组(C组:n=18)。各组分别于术后24h,48h,72h分批处死,取肝后称肝重,测肝再生指数,10%福尔马林溶液固定肝脏,HE染色后测肝细胞分裂指数、免疫组化
2、法测肝细胞PCNA(增殖细胞核蛋白抗原)指数。结果 ①24h、48hB组术后肝再生率增加较慢,与A组相比,差异有非常显著性意义(P<0.01);两组72h肝再生率差异有显著性意义(P=0.031)。而C组术后肝再生率在不同时间点明显偏低,和A、B组比较,差异均有非常显著性意义(P<0.01)。②B组术后24h肝细胞分裂指数、残余肝组织PCNA标记指数较低,与A组相比,差异有非常显著性意义(P<0.01);两组分别在48h、72h比较,差异无显著性意义(P>0.05)。而C组术后肝细胞分裂指数、残余肝组织PCNA标记指数
3、在不同时间明显降低,差异均有非常显著性意义(P<0.01)。结论70%胃体部切除后大鼠残肝再生延迟,胃窦部切除后大鼠残肝再生明显受抑。关键词 胃切除肝切除胃泌素肝再生ExperimentalstudyoftheaffectionofpartialgastrectomyonremananthepaticregenerationinratsWanghuaa,yanyehongb(a.DepartmentofgeneralSurgery,theZhonghuanHospital,jianxib.DepartmentofPla
4、ntationSurgery,theFirstAffiliatedHospitalofNanchangUniversity,Nanchang330038,china)AbstractObjective:Toexplorethehepaticregenerationfollowingpartialhepaticresectioncombinedwithdifferenttypeofgastriectomy.Methods:Fifty-fourmaleSprague-Dawleyratswererandomizedinto
5、threegroupsofeighteenanimals讨论each:ineachgroup,68%ofthehepaticwasresected.Additionally,20%ofthegastricwasresectedingroupBwith70%ofthegastricbodyandgroupCwiththegastricantrum.Sixratsineachgroupweresacrifiedforheptictissuesamplesonthe24th,48th,72ndpostoperativehou
6、rrespectively;residualliverwasweighed,fixedwith10%formalin,stainedwithH-E.Liverregenerationrate(LRR)andMI(mitoticindex)ofliverwereexaminedandPCNA(proliferatingcellnuclearantigen)labelingindexofhepatocytewasinvestigatedimmunohistochemically.Results:①LRRincreaseat
7、24thh,48thhingroupBwasobviouslyslowerthanthatofgroupArespectively(P<0.01),differenceatthevaluesof72ndhbetweenthemwasstatistically(P=0.031).ThevaluesingroupCatvarioustimepointswasquitelow,ComparedwithgroupAandgroupB,thedifferencesweresignificant(P<0.01).②Thelevel
8、ofMIandPCNAlabelingindexingroupBwaslowerthanthatingroupAsignificantly(P<0.01);Andtherewasnostatisticaldifferenceat48thh,72ndhrespectivelybetweenthetwogroups(P>0.05).T