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强心汤对慢性心力衰竭大鼠心肌线粒体稳态和能量代谢的影响
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庞 延 1, 2* ,毛美玲 ,卢健棋 ,陈佳永 ,唐梅玲 ,黄溥玮(1. 广西中医药大学第一附属医院急诊科,南宁
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530001;2. 广西中医药大学研究生院,南宁 530001;3. 广西中医药大学第一附属医院心血管一区,南宁
530001)
中图分类号 R285;R256.2 文献标志码 A 文章编号 1001-0408(2024)15-1831-06
DOI 10.6039/j.issn.1001-0408.2024.15.06
摘 要 目的 基于线粒体自噬,探讨强心汤对慢性心力衰竭(CHF)大鼠心肌线粒体稳态和能量代谢的影响。方法 取雄性SD大
鼠,通过结扎左冠状动脉前降支构建CHF模型,并将造模成功的大鼠按随机数字表法分为模型组、强心汤组[12.25 g/(kg·d),按生
药量计]、卡托普利组[10.38 mg/(kg·d)]、强心汤+卡托普利组(用法用量同各单药组),每组8只;另取正常大鼠8只,仅于左冠状动
脉前降支穿线但不结扎,作为假手术组。从造模成功次日开始,各药物组大鼠每天分2次灌胃相应药液,连续28 d。末次给药后,
检测梗死心肌组织中腺苷三磷酸(ATP)、腺苷一磷酸(AMP)、游离脂肪酸(FFA)水平,观察其病理改变和线粒体形态,检测其B细
胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)、TANK结合激酶1(TBK1)、p62蛋白的表达情况。结果 与假手术组比较,模型组大鼠
心肌组织纤维化明显,大量线粒体肿胀、融合,内嵴断裂;梗死心肌组织中AMP、FFA水平和Bax、p62蛋白的表达均显著升高或上
调,ATP水平和Bcl-2、TBK1蛋白的表达均显著降低或下调(P<0.05)。与模型组比较,各药物组大鼠心肌组织病理改变和线粒体
肿胀均有所改善,梗死心肌组织中AMP、FFA水平和Bax、p62蛋白的表达均显著降低或下调(P<0.05),ATP水平和Bcl-2、TBK1
蛋白的表达均显著升高或上调(P<0.05),且强心汤+卡托普利组的效果优于各单药组(P<0.05)。结论 强心汤能够减轻CHF大
鼠心肌纤维化、线粒体肿胀,改善其心肌能量代谢;上述作用可能与调控 Bcl-2、Bax、TBK1、p62 蛋白表达,促进心肌线粒体自噬
有关。
关键词 强心汤;慢性心力衰竭;线粒体自噬;线粒体稳态;能量代谢
Effects of Qiangxin decoction on myocardial mitochondrial homeostasis and energy metabolism in chronic
heart failure rats
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1, 2
PANG Yan ,MAO Meiling ,LU Jianqi ,CHEN Jiayong ,TANG Meiling ,HUANG Puwei (1. Dept. of
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Emergency, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530001, China;
2. Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China;3. Cardiovascular Zone
1, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530001, China)
ABSTRACT OBJECTIVE To investigate the effects of Qiangxin decoction on myocardial mitochondrial and energy metabolism
in rats with chronic heart failure (CHF) based on mitophagy. METHODS Male SD rats were collected to establish CHF model by
ligating the left anterior descending branch of coronary artery. The successful modeling rats were divided into model group,
Qiangxin decoction group [12.25 g/(kg·d), calculated by crude drug], captopril group [10.38 mg/(kg·d)], and Qiangxin
decoction+captopril group (the same usage and dosage as single drug group) according to a random number table method, with 8
rats in each group. Another 8 normal rats were selected and received threading in the left anterior descending branch of the coronary
artery without ligation as the sham operation group. Starting from the second day after successful modeling, the rats in
administration groups were given relevant drug intragastrically, twice a day, for consecutive 28 days. After the last medication, the
levels of adenosine triphosphate (ATP), adenosine monophosphate (AMP) and free fatty acid (FFA) in infarcted myocardial
tissues were detected, the pathological changes and mitochondrial morphology of the infarcted myocardial tissue were observed, as
well as the protein expressions of B cell lymphoma-2 (Bcl-2), Bcl-2 related X protein (Bax), TANK-binding kinase 1 (TBK1),
p62 were detected in each group. RESULTS Compared with
Δ 基金项目 广西自然科学基金项目(No.2021GXNSFBA196018, the sham operation group, the infarcted myocardial tissue
No.2021GXNSFAA220111);国家自然科学基金项目(No.82160887); fibrosis was changed evidently, with a large number of
国家中医药传承创新中心项目(No.2023019-10);广西岐黄学者培养 mitochondrial swelling and fusion, and internal cristae
项目(No.2024005-06-02) rupture; the levels of AMP and FFA, the protein expressions
*第一作者 主治医师,博士研究生。研究方向:中西医结合防治
of Bax and p62 were all increased or up-regulated significantly
心血管病。E-mail:271528495@qq.com
# 通信作者 主任医师,教授,博士生导师。研究方向:中西医结合 in infarcted myocardial tissue, while the level of ATP, and
防治心血管病。E-mail:lujianqi666@163.com the protein expressions of Bcl-2 and TBK1 were all decreased
中国药房 2024年第35卷第15期 China Pharmacy 2024 Vol. 35 No. 15 · 1831 ·