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时间:2020-06-03
《白藜芦醇在大鼠失血-内毒素诱导的多器官功能障碍中的肺保护作用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、·748·热带医学杂志2014年6月第14卷第6期JTrop丛...·实验研究论著·白藜芦醇在大鼠失血.内毒素诱导的多器官功能障碍中的肺保护作用张建杏,李红英,周国斌,王庆,李真(广东省人民医院广东省医学科学院,广东广州510080)摘要:目的探讨白藜芦醇(Res)在失血.内毒素二次打击诱导的大鼠多器官功能障碍(MODS)模型中的肺保护作用。方法大鼠30min内放血2ml/100g体重,4h后腹腔内注射内毒素(5mg/kg),随机将大鼠分为对照组、盐水组及白藜芦醇组.分别予以生理盐水或2Omg白藜芦醇预处理。采用血
2、气分析仪检测动脉血气;HE染色观察肺部病理变化;伊文思蓝(EB)法检测肺微血管通透性;湿干重比(W/D)检测肺水肿;TUNEL染色检测凋亡细胞数量;蛋白免疫印迹法检测BAX及Bc1.2表达;荧光法检测Caspase.3活性。结果与对照组比较,盐水组中动脉血气明显降低,HE染色见肺泡壁增厚、大量中性粒细胞浸润,肺组织中EB含量及W/D明显增加,差异均有统计学意义(P<0.05)。而上述改变在白藜芦醇组中均得到改善,差异有统计学意义(P3、提高,Bc1.2表达降低,差异均有统计学意义(P<0.05),Res治疗可以明显抑制肺组织改变,差异有统计学意义(P<0.05)。结论白藜芦醇可以通过抑制细胞凋亡而减轻失血.内毒素诱导的急性肺损伤。关键词:急性肺损伤:白藜芦醇;凋亡中图分类号:R563.8文献标识码:A文章编号:1672—3619(2014)06—0748·06Theprotectiveefectofresveratrolagainstlunginjuryinhemorrhage-lip0pOlysaccharideinducedmultipleo4、rgandysfunctionsyndromeinratsZHANGJian·xing,LIHong—ying,ZHOUGuo—bin,WANGQing,LIZhen(GuangdongGeneralHospital,GuangdongAcademyofMedicalSciences,Guangdong,Guangzhou510080,China)Abstract:ObjectiveToinvestigatetheprotectiveefectofResveratrol(Res)againstlunginjuryi5、nhemorrhage—lipopolysaccharideinducedmultipleorgandysfunctionsyndrome(MODS)inrats.MethodsRatswerebled2ml/lO0gweight,and4hourslaterintraperitoneallyinjectedlipopolysaccharide5mg/kgweighttoinduceMODS.Ratswererandomlydividedintothecontrolgroup,normalsaline(NS)gro6、upandResgroup(20mg/kgweight).ThenratswerecorrespondinglytreatedbyNSorResafterthedouble—strike.Pathologicalchangeswasdetectedbyhematoxylin—eosin(HE)staining,arterialPO2bybloodgasanalysis,lungvascularpermeabilitybyEvansblue(EB)method,interstitialedemabywet—to—dr7、yweightratio(W/D),thenumberofapoptoticcellsbyTUNELstaining,Bax,Bcl一2expressionbyWestern-blot,Caspase一3activitybyCaspase-3fluorometricassaykit.ResultsRatsinNSgroupexhibitedsignificantacutelunginjury(ALI)characteristics:deteriorationofhistopathologicalfeatures,i8、ncreasedinW/DratioandEBconcentration,anddecreasedinPO2(尸l<0.05,comparedwithcontrolgroup).ThesecharacteristicscouldbeattenuatedbyRes(P
3、提高,Bc1.2表达降低,差异均有统计学意义(P<0.05),Res治疗可以明显抑制肺组织改变,差异有统计学意义(P<0.05)。结论白藜芦醇可以通过抑制细胞凋亡而减轻失血.内毒素诱导的急性肺损伤。关键词:急性肺损伤:白藜芦醇;凋亡中图分类号:R563.8文献标识码:A文章编号:1672—3619(2014)06—0748·06Theprotectiveefectofresveratrolagainstlunginjuryinhemorrhage-lip0pOlysaccharideinducedmultipleo
4、rgandysfunctionsyndromeinratsZHANGJian·xing,LIHong—ying,ZHOUGuo—bin,WANGQing,LIZhen(GuangdongGeneralHospital,GuangdongAcademyofMedicalSciences,Guangdong,Guangzhou510080,China)Abstract:ObjectiveToinvestigatetheprotectiveefectofResveratrol(Res)againstlunginjuryi
5、nhemorrhage—lipopolysaccharideinducedmultipleorgandysfunctionsyndrome(MODS)inrats.MethodsRatswerebled2ml/lO0gweight,and4hourslaterintraperitoneallyinjectedlipopolysaccharide5mg/kgweighttoinduceMODS.Ratswererandomlydividedintothecontrolgroup,normalsaline(NS)gro
6、upandResgroup(20mg/kgweight).ThenratswerecorrespondinglytreatedbyNSorResafterthedouble—strike.Pathologicalchangeswasdetectedbyhematoxylin—eosin(HE)staining,arterialPO2bybloodgasanalysis,lungvascularpermeabilitybyEvansblue(EB)method,interstitialedemabywet—to—dr
7、yweightratio(W/D),thenumberofapoptoticcellsbyTUNELstaining,Bax,Bcl一2expressionbyWestern-blot,Caspase一3activitybyCaspase-3fluorometricassaykit.ResultsRatsinNSgroupexhibitedsignificantacutelunginjury(ALI)characteristics:deteriorationofhistopathologicalfeatures,i
8、ncreasedinW/DratioandEBconcentration,anddecreasedinPO2(尸l<0.05,comparedwithcontrolgroup).ThesecharacteristicscouldbeattenuatedbyRes(P
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