Fanlian Huazhuo Formula alleviates high-fat diet-induced nonalcoholic fatty liver disease by modulating autophagy and lipid synthesis signaling pathway

BACKGROUND Fanlian Huazhuo Formula(FLHZF)has the functions of invigorating spleen and resolving phlegm,clearing heat and purging turbidity.It has been identified to have therapeutic effects on type 2 diabetes mellitus(T2DM)in clinical application.Non-alcoholic fatty liver disease(NAFLD)is frequently diagnosed in patients with T2DM.However,the therapeutic potential of FLHZF on NAFLD and the underlying mechanisms need further investigation.AIM To elucidate the effects of FLHZF on NAFLD and explore the underlying hepatoprotective mechanisms in vivo and in vitro.METHODS HepG2 cells were treated with free fatty acid for 24 hours to induce lipid accumulation cell model.Subsequently,experiments were conducted with the different concentrations of freeze-dried powder of FLHZF for 24 hours.C57BL/6 mice were fed a high-fat diet for 8-week to establish a mouse model of NAFLD,and then treated with the different concentrations of FLHZF for 10 weeks.RESULTS FLHZF had therapeutic potential against lipid accumulation and abnormal changes in biochemical indicators in vivo and in vitro.Further experiments verified that FLHZF alleviated abnormal lipid metabolism might by reducing oxidative stress,regulating the AMPKα/SREBP-1C signaling pathway,activating autophagy,and inhibiting hepatocyte apoptosis.CONCLUSION FLHZF alleviates abnormal lipid metabolism in NAFLD models by regulating reactive oxygen species,autophagy,apoptosis,and lipid synthesis signaling pathways,indicating its potential for clinical application in NAFLD.

痛泻要方合四逆散对2型糖尿病KK-Ay小鼠脂代谢及AMPK/SREBP1c/Fas通路的影响

目的 观察痛泻要方合四逆散对2型糖尿病KK-Ay小鼠脂代谢以及肝脏AMPK/SREBP1c/Fas通路的影响。方法 将24只SPF级雄性KK-Ay小鼠建立2型糖尿病模型,采用随机表数字法分为模型组、痛泻药方合四逆散中药低、中、高剂量组,每组各6只,另取6只雄性C57BL/6J小鼠作为正常对照组。干预4周后,检测小鼠血脂[高密度脂蛋白(High density lipoprotein, HDL)、低密度脂蛋白(Low density lipoprotein, LDL)、甘油三酯(Triglyceride, TG)]以及脂联素的表达水平,并通过RT-PCR,Western blot检测小鼠肝脏中AMPK、SREBP1c、Fas蛋白以及基因的表达情况。结果 痛泻药方合四逆散可明显上调KK-Ay小鼠的血清HDL和脂联素水平,下调TG和LDL表达水平,差异有统计学意义(P<0.05),且呈现剂量依赖性;另外,中药高剂量组可以增加小鼠肝脏中AMPK基因和磷酸化蛋白表达水平,降低SREBP1c和Fas的基因和蛋白表达水平,差异有统计学意义(P<0.05)。结论 痛泻药方合四逆散能通过调控AMPK/SREBP1c/Fas信号通路而改善2型糖尿病KK-Ay小鼠脂代谢紊乱。