摘要
目的探讨三才连梅颗粒对2型糖尿病(Type 2 diabetes mellitus,T2DM)合并非酒精性脂肪肝(Non-alcoholic fatty liver disease,NAFLD)肝细胞凋亡的作用及机制。方法以高脂高糖+链脲佐菌素(STZ)诱导的糖尿病合并脂肪肝SD大鼠为模型,三才连梅颗粒进行干预,实验结束对各组大鼠进行腹腔葡萄糖耐量实验;ELISA法检测各组大鼠血清中生化及肝脏匀浆中炎症水平;测定肝脏组织超氧化物歧化酶(SOD)、丙二醛(MDA)水平反应氧化应激情况;Real-time PCR检测肝脏组织凋亡信号调节激酶1(ASK1)、氨基末端激酶(c-Jun,JNK)、核因子-κB(NF-κB)mRNA的表达;Western blot检测肝脏凋亡蛋白的表达及TUNEL法检测肝细胞凋亡情况;苏木素伊红(HE)染色观察肝脏病理组织结构。结果三才连梅颗粒能减轻T2DM合并NAFLD模型大鼠的体质量,降低血清血糖、胰岛素水平;降低肝脏匀浆白介素-1β(IL-1β)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)浓度,改善胰岛素抵抗、血脂代谢紊乱及氧化应激,减轻肝细胞脂肪变性。三才连梅颗粒可下调T2DM合并NAFLD模型大鼠肝脏组织ASK1、JNK、NF-κB mRNA表达,调节凋亡相关蛋白Bax、caspase-3、Bcl-2的表达以减轻肝细胞凋亡情况。结论本研究证明三才连梅颗粒可以通过抑制ROS-ASK1-JNK/NF-κB信号通路,调节细胞凋亡而改善肝脏胰岛素抵抗及氧化应激,延缓或逆转NAFLD病程进展。
Objective To study the action and mechanism of Sancai Lianmei Particle on cell apoptosis of liver cells in Type 2 Diabetes Mellitus(T2DM)combined with Non-alcoholic Fatty Liver Disease(NAFLD).Methods High fat and sugar+STZ induced diabetic with fatty liver rats used as models,intervention with Sancai Lianmei Particle,intraperitoneal glucose tolerance test(IPGTT)to assess insulin resistance,ELISA method to detect the mice serum biochemistry,insulin levels;ELISA method to detect inflammatory factors in liver homogenate;SOD and MDA levels were monitored to assess the degree of oxidative stress;ASK1/JNK/NF-κB mRNA expression in liver tissue was monitored by Real-time PCR;apoptotic-related proteins were detected by Western blot,apoptosis of hepatocytes was assayed by TUNEL;HE staining was conducted to observe the liver tissue.Results Sancai Lianmei Particle can obviously reduce the body weight of T2DM with NAFLD model rats;reduce the levels of GHb,INS,TC,TG,LDL-C,ALT,AST,IL-1β,IL-6,TNF-α,MDA;improve insulin resistance and oxidative stress.HE staining of liver tissue showed that Sancai Lianmei Particle could alleviate the vacuolar degeneration of liver and deposition of lipid droplets.Sancai Lianmei Particle can effectively down-regulate the expressions of ASK1,JNK and NF-κB mRNA in liver tissues of model rats.Western Blot results exhibited that Sancai Lianmei Particle could significantly regulate the expression of apoptotic proteins of Bax,Caspase-3,and Bcl-2 and inhibit the apoptosis of hepatocytes.Conclusion This study proved that Sancai Lianmei Particle can improve hepatic insulin resistance and oxidative stress,slow the progression of NAFLD by regulating liver cell apoptosis based on ROS-ASK1-JNK/NF-κB pathway.
作者
王胜菊
秦帅
郭银雪
谢恂
陈一丁
韩栩珂
高阳
詹继红
陈秋
Wang Shengju;Qin Shuai;Guo Yinxue;Xie Xun;Chen Yiding;Han Xuke;Gao Yang;Zhan Jihong;Chen Qiu(The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine,Guizhou 550001,China;Hospital of Chengdu University of Traditional Chinese Medicine,Chengdu 610072,China;College of Acupuncture&Tuina,Shaanxi University of Chinese Medicine,Xianyang 712046,China)
出处
《世界科学技术-中医药现代化》
CSCD
北大核心
2023年第8期2684-2691,共8页
Modernization of Traditional Chinese Medicine and Materia Medica-World Science and Technology
基金
医疗服务与保障能力提升补助资金(中央)(CYW2019079):重大疑难疾病,负责人:陈秋
贵阳市科技计划项目(9226):基于斑马鱼技术平台构建斑马鱼甲状腺破坏疾病模型,负责人:秦帅。
