资源描述:
《补肾柔肝方对二甲基亚硝胺诱导大鼠肝纤维化的预防作用及其机制研究.doc》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、补肾柔肝方对二甲基亚硝胺诱导大鼠肝纤维化的预防作用及其机制研究【摘要】探讨补肾柔肝方对二甲基亚硝胺(dimethylnitrosamine,DMN)诱导大鼠肝纤维化的预防作用及初步机制。方法:雄性Wistar大鼠40只,随机分为正常对照组(n=10)、模型组(n=15)及补肾柔肝方预防组(n=15)。模型组和补肾柔肝方预防组以10mg/kgDMN腹腔注射,1次/d,每周连续3d,共4周。模型组在造模同时给予生理盐水灌胃,补肾柔肝方预防组在造模同时给予补肾柔肝方灌胃,共4周;第4周末处死全部大鼠,留取血清及肝组织标本。采用全
2、自动生化分析仪检测血清总胆红素(totalbilirubin,Tbil)、丙氨酸氨基转移酶(alanineaminotransferase,ALT)、天冬氨酸氨基转移酶(aspartateaminotransferase,AST)、白蛋白等;应用逆转录聚合酶链式反应法检测肝组织结缔组织生长因子(connectivetissuegrowthfactor,CTGF)和Ⅰ型胶原mRNA的表达。结果:补肾柔肝方预防组大鼠一般状态明显好于模型组;模型组大鼠死亡率为13.33%(2/15),补肾柔肝方预防组死亡率为6.67%(1/15
3、);模型组大鼠腹水发生率为46.67%(7/15),补肾柔肝方预防组大鼠腹水发生率为20%(3/15),两组比较差异有统计学意义(P<0.01);补肾柔肝方组肝功能较模型组有显著改善(P<0.01)。模型组肝组织CTGF和Ⅰ型胶原mRNA表达明显增强,补肾柔肝方预防组与模型组相比明显减弱(P<0.01)。结论:补肾柔肝方可通过抑制大鼠肝组织CTGF和Ⅰ型胶原mRNA的表达,达到抗肝纤维化的作用。【关键词】补肾柔肝方肝纤维化二甲基亚硝胺结缔组织生长因子Ⅰ型胶原大鼠Objective:Tostudytheef
4、fectsofBushenRouganRecipe(BSRGR),acompoundtraditionalChineseherbalmedicine,onhepaticfibrosisinratsinducedbydimethylnitrosamine(DMN),andtoexploreitspreliminarymechanism.Methods:Atotalof40maleWistarratswererandomlydividedintonormalcontrolgroup(n=10),untreatedgroup(n
5、=15),andBSRGRgroup(n=15).Exceptfortheratsinnormalcontrolgroup,hepaticfibrosisinratswasinducedbyperitonealinjectionofDMNfor4weeks.AndtheratsintheBSRGRgroupwerealsointragastricallyadministeredBSRGRwithinthe4weekcourse.Attheendofthe4weekcourse,ratswereallsacrificed
6、.Theliverfunctionsweredeterminedbyautomaticbiochemistryanalyzer,includingserumtotalbilirubin(Tbil),alanineaminotransferase(ALT),aspartateaminotransferase(AST),andalbumin.Expressionsofconnectivetissuegrowthfactor(CTGF)andcollagentypeⅠmRNAinlivertissueweredetectedby
7、reversetranscriptionpolymerasechainreaction.6Results:ItwasfoundthattheserumTbillevelandtheactivitiesofAST,ALTweredeclinedintheBSRGRgroupascomparedwiththoseintheuntreatedgroup(P<0.01).TheserumalbumincontentintheBSRGRgroupwasincreasedascomparedwiththatintheuntrea
8、tedgroup(P<0.01).TheexpressionsofcollagentypeⅠandCTGFmRNAsintheuntreatedgroupwerehigherthanthoseintheBSRGRgroup(P<0.01).Conclusion:BSRGRcandecreas