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二甲双胍对非酒精性脂肪性肝炎大鼠肝损伤的改善作用
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          吴 霜 ,程海林 ,刘 丹 ,肖 婷 ,吴兴邦 ,李华东 ,胡旭东 [1.华中科技大学同济医学院附属武汉金银潭
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          医院(湖北省传染病临床医学研究中心)消化科,武汉 430023;2.华中科技大学同济医学院附属武汉金银潭医
          院(湖北省传染病临床医学研究中心)感染科,武汉 430023]
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2025)07-0837-06
          DOI  10.6039/j.issn.1001-0408.2025.07.12
          摘  要  目的  探究二甲双胍(Met)调控磷脂酰肌醇3激酶/蛋白激酶B/血小板源性生长因子(PI3K/AKT/PDGF)信号通路对非酒
          精性脂肪性肝炎(NASH)大鼠肝损伤的影响。方法  以高糖高脂饮食饲喂大鼠构建 NASH 模型,造模成功后随机分为模型组
         (Model组)、Met低剂量组(Met-L组,100 mg/kg)、Met中剂量组(Met-M组,200 mg/kg)、Met高剂量组(Met-H组,400 mg/kg)、高剂
          量Met+PI3K激活剂组(Met-H+740 Y-P组,400 mg/kg Met+50 mg/kg 740 Y-P),另设对照组(Control组),每组12只。各组大鼠每天
          灌胃/注射相应药物1次,连续6周。分析大鼠体重和肝指数变化;观察大鼠肝组织病理损伤[评估非酒精性脂肪性肝病活动度评分
         (NAS)]、脂质沉积(计算油红O阳性染色面积占比)和纤维化(计算胶原沉积分数)情况;检测大鼠血清和肝组织中炎症因子[白细
          胞介素6(IL-6)、肿瘤坏死因子α(TNF-α)]水平以及血清中脂代谢[总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)]
          和肝功能[天冬氨酸转氨酶(AST)、丙氨酸转氨酶(ALT)]指标水平;检测大鼠肝组织中PI3K/AKT/PDGF信号通路相关蛋白和胱天
          蛋白酶3(Caspase-3)蛋白表达水平。结果  与Control组比较,Model组大鼠体重和肝指数,血清中脂代谢和肝功能指标水平,血清
          和肝组织中 IL-6、TNF-α 水平,NAS,油红 O 阳性染色面积占比,胶原沉积分数,肝组织中 PI3K、AKT 蛋白磷酸化水平和 PDGF、
          Caspase-3蛋白表达水平均显著升高(P<0.05);肝组织病理损伤严重,富含脂滴,胶原沉积明显。经Met干预后,大鼠上述定量指
          标和病理变化均显著改善(P<0.05),且呈剂量依赖性(P<0.05)。740 Y-P 可显著逆转高剂量 Met 对大鼠上述指标的改善作用
         (P<0.05)。结论  Met可改善NASH大鼠肝损伤,减轻炎症反应和肝纤维化,其作用机制可能与抑制PI3K/AKT/PDGF信号通路活
          性有关。
          关键词  二甲双胍;非酒精性脂肪性肝炎;肝损伤;脂代谢;肝纤维化;PI3K/AKT/PDGF信号通路


          Improvement effect of metformin on liver injury in non-alcoholic steatohepatitis rats
          WU Shuang ,CHENG Hailin ,LIU Dan ,XIAO Ting ,WU Xingbang ,LI Huadong ,HU Xudong [1.  Dept.  of
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          Gastroenterology,  Wuhan  Jinyintan  Hospital,  Tongji  Medical  College  of  Huazhong  University  of  Science  and
          Technology (Hubei  Clinical  Research  Center  for  Infectious  Disease),  Wuhan  430023,  China;2.  Dept.  of
          Infection,  Wuhan  Jinyintan  Hospital,  Tongji  Medical  College  of  Huazhong  University  of  Science  and
          Technology (Hubei Clinical Research Center for Infectious Disease), Wuhan 430023, China]
          ABSTRACT   OBJECTIVE To investigate the effects of metformin (Met) on liver injury in non-alcoholic steatohepatitis (NASH)
          rats by regulating the PI3K/AKT/PDGF signaling pathway. METHODS NASH model was constructed by feeding rats with a high-
          glucose  and  high-fat  diet,  and  assigned  into  Model  group,  Met  low-dose  group (Met-L  group,  100  mg/kg),  Met  medium-dose
          group (Met-M group, 200 mg/kg), Met high-dose group (Met-H group, 400 mg/kg), and high dose of Met+PI3K activator group
         (Met-H+740  Y-P  group,  400  mg/kg  Met+50  mg/kg  740  Y-P),  with  12  rats  in  each  group. Another  12  rats  were  regarded  as  the
          Control group. Each group of rats was orally administered/injected with the corresponding medication once a day for 6 consecutive
          weeks.  The  changes  in  body  weight  and  liver  index  of  rats  were  recorded  and  analyzed.  The  pathological  damage   [evaluation  of
          non-alcoholic fatty liver disease activity score (NAS)], lipid deposition (calculation of the proportion of oil red O-positive staining
          area),  and  fibrosis (calculation  of  collagen  deposition  score)  were  observed  in  liver  tissue  of  rats.  The  levels  of  inflammatory
          factors [interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α)] in serum and liver tissue, the levels of serum lipid metabolism
          indicators  [total  cholesterol (TC),  triglyceride (TG),  and  low-density  lipoprotein  cholesterol (LDL-C)]  and  liver  function
                                                             indicators  [aspartate  aminotransferase  (AST)  and  alanine
             Δ 基金项目 武汉市知识创新专项项目(No.2022020801010588);        aminotransferase (ALT)] were measured. The expression levels
          武汉市医学科研项目(No.WY22A05)                              of  PI3K/AKT/PDGF  signaling  pathway-related  proteins  and
             *第一作者 主治医师,硕士。研究方向:消化肝病。E-mail:                 Caspase-3  in  liver  tissue  of  rats  were  determined.  RESULTS
          yt0viv@163.com
             # 通信作者 主任医师。研究方向:消化肝病。E-mail:xyhut41@           Compared  with  the  Control  group,  body  weight,  liver  index,
          163.com                                            the  levels  of  serum  lipid  metabolism  indicators  and  liver


          中国药房  2025年第36卷第7期                                                 China Pharmacy  2025 Vol. 36  No. 7    · 837 ·
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