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时间:2020-05-04
《小鼠肝脏ChREBP的表达与高胰岛素血症的实验研究-论文.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、·882·药学学报ActaPharmaceuticaSinica2014,49(6):882—887小鼠肝脏ChREBP的表达与高胰岛素血症的实验研究黄立伟,杨晓萌,张晓琳,王丽,叶菲(中国医学科学院、北京协和医学院药物研究所,新药作用机制研究与药效评价北京市重点实验室,北京100050)摘要:探讨血胰岛素水平对机体碳水化合物反应元件结合蛋白(ChREBP)及乙酰辅酶A羧化酶(ACC)、脂肪酸合成酶(FAS)表达的影响。分别应用高血胰岛素合并高血糖的KKAy小鼠模型和高血胰岛素DIP小鼠模型。采用Westernblotting法观察动物肝脏ChREBP、FAS和ACC蛋白水平。
2、结果显示,KKAy小鼠血胰岛素与血糖水平(r=0.902,P<0.ooo)、血胰岛素与血TG水平(r=O.732,P<0.000)均呈明显正相关;且随着血胰岛素水平的升高,其肝脏ChREBP、FAS和ACC的蛋白表达也呈渐进性升高。D10小鼠血胰岛素与血糖水平无明显相关性;血胰岛素与血TG水平呈明显正相关(r=0.722,P3、,从而导致机体的糖脂代谢紊乱。关键词:高胰岛素血症;高血糖;ChREBP;糖脂代谢紊乱中图分类号:R963文献标识码:A文章编号:0513—4870(2014)06—0882-06ThehepaticChREBPexpressionandhyperinsulinemiainmiceHUANGLi.wei,YANGXiao—meng,ZHANGXiao—lin,WANGLi,YEFei(Beij'ingKeyLaboratoryofNewDrugMechanisms口P日r,cDf0gc,EvaluationStubInstituteofMateriaMedicaChineseA4、cademyofMedicalSciencesandPekingUnionMedicalCollege,Beijing100050,China)Abstract:ToexploretheeffectsofseruminsulinontheexpressionofChREBP,ACCandFASinvivo.KKAymicewhichwerecharacterizedwithhighlevelsofbothseruminsulinandglucoseandDIOmicewhichwerecharacterizedwithhighseruminsulinlevelalonewere5、utilized.separately.Theage—matchedC57BL/6Jmicefedwithstandardchowwereusedasnormalcontrol(Con).ExpressionsofhepaticChREBP,ACCandFASweredetectedbyWesternblotting.Astheresults,inKKAymice,apositivecorrelationbetweenthe1evelsofseruminsulinandglucosef/-=0.902,P<0.000),aswellasbetweenthelevelsofser6、uminsulinandTG:0.732,尸<0.ooo),wasobserved.Meanwhile,theexpressionsofhepaticChREBEACCandBSincreasedsignificantlyandaccompaniedwithitshyperinsulinemiaandhyperglycemia,separately.InDIPmice,correlationbetweenthelevelsofseruminsulinandTG(r=0.722,P<0.0011alsoshowedpositive,andtheexpressionsofhepat7、icChREBRACCandFASincreasedsignificantlyandalsoaccompaniedwithitshyperinsulinemia.However,theirbloodglucosevalueswerealmostnorma1.Thesedemonstratedthathyperinsulinemiamaycauseglycolipidmetabolicdisordersbyup-regulatingtheexpressionofChREBPinvivo.Key
3、,从而导致机体的糖脂代谢紊乱。关键词:高胰岛素血症;高血糖;ChREBP;糖脂代谢紊乱中图分类号:R963文献标识码:A文章编号:0513—4870(2014)06—0882-06ThehepaticChREBPexpressionandhyperinsulinemiainmiceHUANGLi.wei,YANGXiao—meng,ZHANGXiao—lin,WANGLi,YEFei(Beij'ingKeyLaboratoryofNewDrugMechanisms口P日r,cDf0gc,EvaluationStubInstituteofMateriaMedicaChineseA
4、cademyofMedicalSciencesandPekingUnionMedicalCollege,Beijing100050,China)Abstract:ToexploretheeffectsofseruminsulinontheexpressionofChREBP,ACCandFASinvivo.KKAymicewhichwerecharacterizedwithhighlevelsofbothseruminsulinandglucoseandDIOmicewhichwerecharacterizedwithhighseruminsulinlevelalonewere
5、utilized.separately.Theage—matchedC57BL/6Jmicefedwithstandardchowwereusedasnormalcontrol(Con).ExpressionsofhepaticChREBP,ACCandFASweredetectedbyWesternblotting.Astheresults,inKKAymice,apositivecorrelationbetweenthe1evelsofseruminsulinandglucosef/-=0.902,P<0.000),aswellasbetweenthelevelsofser
6、uminsulinandTG:0.732,尸<0.ooo),wasobserved.Meanwhile,theexpressionsofhepaticChREBEACCandBSincreasedsignificantlyandaccompaniedwithitshyperinsulinemiaandhyperglycemia,separately.InDIPmice,correlationbetweenthelevelsofseruminsulinandTG(r=0.722,P<0.0011alsoshowedpositive,andtheexpressionsofhepat
7、icChREBRACCandFASincreasedsignificantlyandalsoaccompaniedwithitshyperinsulinemia.However,theirbloodglucosevalueswerealmostnorma1.Thesedemonstratedthathyperinsulinemiamaycauseglycolipidmetabolicdisordersbyup-regulatingtheexpressionofChREBPinvivo.Key
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