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杨桃根活性成分DMDD对糖尿病小鼠心肌损伤的保护作用及其

          与NCOA4/FTH1/ATG8轴的相关性研究
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          陈永欣 ,李宇轩,顾凯磊,尤佳俊,孙小涵,马 静,周艳平,韦晓洁(广西中医药大学基础医学院生理学教研
                *
          室,南宁 530200)

          中图分类号  R965;R285      文献标志码  A      文章编号  1001-0408(2026)09-1141-07
          DOI  10.6039/j.issn.1001-0408.2026.09.06

          摘  要  目的  基于核受体共激活因子 4/铁蛋白重链 1/自噬相关蛋白 8(NCOA4/FTH1/ATG8)轴探讨杨桃根活性成分 2-十二烷
          基-6-甲氧基-2,5-二烯-1,4-环己二酮(DMDD)对糖尿病小鼠心肌损伤的保护作用。方法  将造模成功的糖尿病小鼠随机分为模型
          组和DMDD低、中、高剂量组(12.5、25、50 mg/kg),另设不造模的对照组,每组6只。各组小鼠分别灌胃相应药液或生理盐水,每天
          1次,连续21 d。给药结束后,检测小鼠空腹血糖(FBG)、血清中乳酸脱氢酶(LDH)及肌酸激酶同工酶MB(CK-MB)水平;观察心
          肌病理变化、纤维化程度及心肌细胞超微结构;检测心肌细胞死亡指数、NCOA4蛋白阳性指数;检测心肌组织中NCOA4、FTH1、
          ATG8、溶质载体家族7成员11(SLC7A11)及谷胱甘肽过氧化物酶4(GPX4)蛋白表达水平。结果  与模型组比较,DMDD各剂量
          组小鼠心肌损伤明显缓解,心肌细胞超微结构亦有不同程度改善;小鼠 FBG,血清中 LDH、CK-MB 水平,心肌细胞死亡指数、
          NCOA4蛋白阳性指数,心肌组织中NCOA4、FTH1、ATG8蛋白表达水平均显著降低(P<0.001),而SLC7A11、GPX4蛋白表达水平
          均显著升高(P<0.001)。结论  DMDD 可降低糖尿病小鼠血糖水平,减轻心肌组织病理损伤,并抑制细胞死亡,其机制与抑制
          NCOA4/FTH1/ATG8轴过度激活、减少铁自噬有关。
          关键词  杨桃根;DMDD;NCOA4/FTH1/ATG8轴;糖尿病心肌病;铁自噬


          Protective  effect  of  the  active  component  DMDD  from  Averrhoa  carambola  root  on  myocardial  injury  in
          diabetic mice and its correlation with the NCOA4/FTH1/ATG8 axis
          CHEN Yongxin,LI Yuxuan,GU Kailei,YOU Jiajun,SUN Xiaohan,MA Jing,ZHOU Yanping,WEI Xiaojie
         (Dept.  of  Physiology,  School  of  Basic  Medical  Sciences,  Guangxi  University  of  Chinese  Medicine,  Nanning
          530200, China)

          ABSTRACT   OBJECTIVE  To  investigate  the  protective  effect  of  2-dodecyl-6-methoxy-2,5-diene-1,4-cyclohexanedione
         (DMDD),  an  active  component  from  Averrhoa  carambola  root,  on  myocardial  injury  in  diabetic  mice  based  on  the  nuclear
          receptor  coactivator  4/ferritin  heavy  chain  1/autophagy-related  protein  8 (NCOA4/FTH1/ATG8)  axis.  METHODS  The  successfully
          modeled diabetic mice were randomly divided into model group and DMDD low-, medium-, and high-dose (12.5, 25, 50 mg/kg)
          groups,  while  an  additional  non-modeled  control  group  was  established,  with  6  mice  in  each  group.  Each  group  received  the
          corresponding  drug  solution  or  an  equal  volume  of  normal  saline  intragastically  once  daily  for  21  consecutive  days.  After  the
          administration,  the  levels  of  fasting  blood  glucose (FBG),  serum  lactate  dehydrogenase (LDH),  and  creatine  kinase  isoenzyme
          MB (CK-MB)  were  measured.  Myocardial  pathological  changes,  degree  of  fibrosis,  and  myocardial  cell  ultrastructure  were
          observed. Myocardial cell death index and NCOA4 protein positive index were detected. The protein expression levels of NCOA4,
          FTH1,  ATG8,  solute  carrier  family  7  member  11 (SLC7A11),  and  glutathione  peroxidase  4 (GPX4)  in  cardiac  tissue  were
          measured. RESULTS Compared with model group, each DMDD group showed significant alleviation of cardiac pathological injury
          and  varying  degrees  of  improvement  in  the  myocardial  cell  ultrastructure.  The  FBG  and  serum  LDH  and  CK-MB  levels,  the
                                                             myocardial  cell  death  index  and  NCOA4  protein  positive
             Δ 基金项目 国家自然科学基金项目(No.82260881,No.82560873);     index,the  protein  expression  levels  of  NCOA4,  FTH1,  and
          大 学 生 创 新 训 练 计 划(No. 202510600027,No. X202510600055,No.  ATG8  in  cardiac  tissue  were  significantly  decreased (P<
          X202510600011);广 西 中 医 药 大 学 大 学 生 科 研 训 练 课 题(No.  0.001),  while  the  protein  expression  levels  of  SLC7A11  and
          2024DXS05)                                         GPX4    were   significantly   increased   (P<0.001).
             *第一作者 副教授,硕士生导师,博士。研究方向:天然产物防治
                                                             CONCLUSIONS  DMDD  can  reduce  blood  glucose  levels,
          代谢性疾病的基础研究。E-mail:965643897@qq.com
             # 通信作者 教授,硕士生导师,博士。研究方向:中草药天然产物                 alleviate  myocardial  histopathological  injury,  and  inhibit  cell
          防治代谢性疾病的基础研究。E-mail:116190888@qq.com               death  in  diabetic  mice.  The  mechanism  is  associated  with


          中国药房  2026年第37卷第9期                                                China Pharmacy  2026 Vol. 37  No. 9    · 1141 ·
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