Page 52 - 《中国药房》2024年24期
P. 52
盐酸戊乙奎醚对小鼠心肌缺血再灌注损伤的保护作用及机制
Δ
#
*
贾春媚 ,孟晨雪,张宝慧,韩 帅,訾聪娜(河北北方学院附属第一医院麻醉科,河北 张家口 075000)
中图分类号 R965;R542.2 文献标志码 A 文章编号 1001-0408(2024)24-3010-06
DOI 10.6039/j.issn.1001-0408.2024.24.08
摘 要 目的 基于巨噬细胞迁移抑制因子(MIF)/腺苷一磷酸活化的蛋白激酶(AMPK)信号通路探讨盐酸戊乙奎醚(PHC)对小
鼠心肌缺血再灌注(I/R)损伤的保护作用及潜在机制。方法 将雄性C57BL/6小鼠随机分为假手术组、I/R组、I/R+PHC组(PHC 20
μg/kg)、I/R+ISO-1组(MIF抑制剂35 mg/kg)、I/R+PHC+ ISO-1组(剂量同各单药组),每组8只。除假手术组外,其余各组均采用冠
状动脉结扎法制备I/R损伤模型。于结扎前30 min,各药物组小鼠分别单次尾静脉注射相应药液1 mL。于再灌注120 min后,检
测各组小鼠的心功能指标[心率、每搏输出量、射血分数、心输出量、收缩期末左室后壁厚度(LVPWs)、舒张期末左室后壁厚度
(LVPWd)]和血清中炎症因子[白细胞介素6(IL-6)、IL-10、肿瘤坏死因子α(TNF-α)]水平,观察其心肌组织病理改变和超微结构,
并检测心肌组织中B细胞淋巴瘤2(Bcl-2)、磷酸化AMPKα(p-AMPKα)、MIF蛋白的表达水平。结果 与假手术组比较,I/R组小鼠
心肌细胞排列松散,炎症细胞浸润严重,线粒体受损明显,其血清中IL-6、TNF-α水平和心肌组织中p-AMPKα蛋白的表达均显著
升高或上调,心率、每搏输出量、射血分数、心输出量、LVPWd和血清中IL-10水平均显著降低(P<0.05);与I/R组比较,I/R+PHC
组小鼠心肌组织病变有所减轻,其血清中IL-6、TNF-α水平均显著降低,心率、每搏输出量、射血分数、心输出量、LVPWs、LVPWd、
血清中IL-10水平以及心肌组织中Bcl-2、p-AMPKα、MIF蛋白的表达均显著升高或上调(P<0.05);而I/R+ISO-1组小鼠心肌组织
病变有所加重,多数定量指标显著恶化(P<0.05);MIF抑制剂能普遍逆转PHC对I/R小鼠的保护作用(P<0.05)。结论 PHC可改
善I/R小鼠心功能,减轻其心肌组织炎症,恢复其心肌组织超微结构,上述作用可能与激活MIF/AMPK信号通路有关。
关键词 盐酸戊乙奎醚;心肌缺血再灌注;炎症反应;MIF/AMPK信号通路
Protective effects and mechanism of penehyclidine hydrochloride on myocardial ischemia-reperfusion
injury in mice
JIA Chunmei,MENG Chenxue,ZHANG Baohui,HAN Shuai,ZI Congna(Dept. of Anesthesiology, the First
Affiliated Hospital of Hebei North University, Hebei Zhangjiakou 075000, China)
ABSTRACT OBJECTIVE To investigate the protective effects and potential mechanism of penehyclidine hydrochloride (PHC)
on myocardial ischemia-reperfusion (I/R) injury in mice through the macrophage migration inhibitory factor (MIF)/adenosine
monophosphate-activated protein kinase (AMPK) signaling pathways. METHODS Male C57BL/6 mice were randomly divided
into sham operation group, I/R group, I/R+PHC group (PHC 20 μg/kg), I/R+ISO-1 group (MIF inhibitor 35 mg/kg), I/R+
PHC+ISO-1 group (with the same dosage as each single drug group), with 8 mice in each group. Except for the sham operation
group, the myocardial I/R injury model was prepared by coronary artery ligation. Thirty minutes before ligation, mice in each drug
group were injected with 1 mL of the corresponding drug solution through the tail vein. After 120 min of reperfusion, the levels of
cardiac function indexes [heart rate, stroke volume, ejection fraction, cardiac output, left ventricular posterior wall thickness in
systole (LVPWs), left ventricular posterior wall thickness in diastole (LVPWd)], serum inflammatory factors [interleukin-6 (IL-
6), IL-10, tumor necrosis factor-α (TNF-α)] in mice were detected in each group; the pathological changes and ultrastructure of
myocardial tissue were observed, and the protein expressions of B cell lymphoma-2 (Bcl-2), phosphorylated AMPKα (p-AMPKα)
and MIF in myocardial tissue were detected. RESULTS Compared with the sham operation group, the myocardial cells in the I/R
group were loosely arranged, with severe infiltration of inflammatory cells and obvious mitochondrial damage. Serum levels of IL-6
and TNF-α and protein expression of p-AMPKα in myocardial tissue were significantly increased or upregulated, while heart rate,
stroke volume, ejection fraction, cardiac output, LVPWd and serum level of IL-10 were significantly decreased (P<0.05).
Compared with the I/R group, the myocardial tissue lesions in
Δ 基金项目 张家口市科学技术局市级科技计划自筹经费项目
(No.2221189D) the I/R+PHC group were alleviated; serum levels of IL-6 and
*第一作者 医师,硕士。研究方向:体外循环麻醉与心肌细胞缺
TNF- α were decreased significantly, while heart rate, stroke
血再灌注损伤。E-mail:jiachunmeii94@163.com
volume, ejection fraction, cardiac output, LVPWs, LVPWd,
# 通信作者 副主任医师,博士。研究方向:体外循环麻醉与心肌
细胞缺血再灌注损伤。E-mail:zicongna868@163.com serum level of IL-10, and protein expressions of Bcl-2, p-
· 3010 · China Pharmacy 2024 Vol. 35 No. 24 中国药房 2024年第35卷第24期