心脑脉康调控PPARγ/LXRα/ABCA1通路介导脂质代谢对ApoE^(-/-)小鼠动脉粥样硬化的影响  

Effects of Xinnao Maikang Regulating PPARγ/LXRα/ABCA1 Pathway Mediating Lipid Metabolism on ApoE^(-/-)Atherosclerosis Mice

作　　者：张家瑞 丁春晓[2] 管仲莹[2] 刘晶[2] 陈巍 高静[2] 庞敏[2] ZHANG Jiarui;DING Chunxiao;GUAN Zhongying;LIU Jing;CHEN Wei;GAO Jing;PANG Min(Liaoning University of Traditional Chinese Medicine,Shenyang 110847,China;Liaoning Academy of Traditional Chinese Medicine,Shenyang 110034,China)

机构地区：[1]辽宁中医药大学,辽宁沈阳110847 [2]辽宁省中医药研究院,辽宁沈阳110034

出　　处：《中国中医药信息杂志》2025年第3期83-88,共6页Chinese Journal of Information on Traditional Chinese Medicine

基　　金：国家重点研发计划(2018YFC1704100、2018YFC1704105);辽宁中医药大学附属第二医院“伯乐工程专项”(2022-BLGC-002);辽宁省自然科学基金联合基金面上项目(2023-MSLH-145)。

摘　　要：目的基于PPARγ/LXRα/ABCA1通路探讨心脑脉康改善ApoE^(-/-)小鼠动脉粥样硬化的潜在作用机制。方法将50只ApoE^(-/-)小鼠随机分为模型组、阿托伐他汀组和心脑脉康高、中、低剂量组,每组10只,予高脂饲料喂养12周建立动脉粥样硬化模型。10只C57BL/6J小鼠作为正常组,予常规饲料喂养。阿托伐他汀组予阿托伐他汀钙混悬液灌胃,心脑脉康高、中、低剂量组予56、28、14 g/kg心脑脉康水煎液灌胃,正常组和模型组予等体积生理盐水灌胃,连续8周。检测小鼠肝脏指数,全自动生化分析仪检测血脂水平,生化试剂盒检测肝组织总胆固醇(TC)、三酰甘油(TG)含量,HE染色观察主动脉内膜及肝组织形态,油红O染色观察肝组织脂质沉积情况,Western blot检测肝组织过氧化物酶体增殖物激活受体γ(PPARγ)、肝X受体α(LXRα)、ATP结合盒转运蛋白(ABC)A1、ABCG1、B族Ⅰ型清道夫受体(SR-BⅠ)蛋白表达。结果与正常组比较,模型组小鼠肝脏指数显著升高(P<0.05),血清TC、TG、低密度脂蛋白胆固醇(LDL-C)含量显著升高(P<0.05),高密度脂蛋白胆固醇(HDL-C)含量显著降低(P<0.05),肝组织TC、TG含量显著升高(P<0.05),主动脉管壁增厚、内皮下泡沫细胞增多,肝细胞排列紊乱,可见大量脂肪空泡,肝组织PPARγ、LXRα、ABCA1、ABCG1、SR-BⅠ蛋白表达显著降低(P<0.01);与模型组比较,心脑脉康高、中、低剂量组和阿托伐他汀组小鼠肝脏指数显著降低(P<0.05),血清TC、TG、LDL-C含量显著降低(P<0.05),HDL-C含量显著升高(P<0.05),肝组织TC、TG含量显著降低(P<0.05),主动脉管壁增厚减轻,内皮下泡沫细胞减少,肝细胞排列较整齐,脂肪变性不同程度减轻,心脑脉康高剂量组和阿托伐他汀组小鼠肝组织PPARγ、LXRα、ABCA1、ABCG1、SR-BⅠ蛋白表达显著升高(P<0.05,P<0.01)。结论心脑脉康可降低动脉粥样硬化小鼠血脂水平,减轻动脉粥样斑块和肝组织脂质沉积,其机制可能�Objective To explore the potential mechanism of Xinnao Maikang in improving ApoE^(-/-)atherosclerosis mice based on PPARγ/LXRα/ABCA1 pathway.Methods Totally 50 ApoE^(-/-)mice were randomly divided into model group,atorvastatin group,Xinnao Maikang high-,medium-and low-dosage groups,and fed with high-fat diet for 12 weeks to establish atherosclerosis model.Another 10 C57BL/6J mice were selected as normal group,and atorvastatin group was given atorvastatin calcium suspension by intragastric administration,Xinnao Maikang high,medium-and low-dosage groups were given Xinnao Maikang Decoction 56,28,14 g/kg by intragastric administration,the normal group and model group were given equal volume of normal saline by intragastric administration for 8 weeks.Liver index of mice was detected,serum lipid level of mice was detected by automatic biochemical analyzer,TC and TG contents in liver tissue were detected by biochemical kit,morphology of aortic intima and liver tissue were observed by HE staining,lipid deposition in liver tissue was observed by oil red O staining,the expressions of PPARγ,LXRα,ABCA1,ABCG1 and SR-BⅠin liver tissue were detected by Western blot.Results Compared with the normal group,the liver index in the model group significantly increased(P<0.05),the contents of serum TC,TG and LDL-C significantly increased(P<0.05),and the contents of HDL-C significantly decreased(P<0.05),the contents of TC and TG in liver tissue increased(P<0.05),the aortic wall was thickened,the number of subcutaneous foam cells increased,the arrangement of liver cells were disaffected,and a large number of fat vacuoles could be seen,the protein expressions of PPARγ,LXRα,ABCA1,ABCG1 and SR-BⅠin liver tissue significantly decreased(P<0.01).Compared with the model group,the liver index of Xinnao Maikang high-,medium and low-dosage groups and atorvastatin group significantly decreased(P<0.05),the serum contents of TC,TG and LDL-C significantly decreased(P<0.05),and the HDL-C contents significantly increased(P<0.05),the contents o

关 键 词：心脑脉康 动脉粥样硬化 胆固醇逆转运 PPARγ/LXRα/ABCA1通路 ApoE^(-/-)小鼠 

分 类 号：R285.5[医药卫生—中药学]