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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 ·

