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·药学研究·
乌司他丁改善顺铂致心肌损伤的作用及机制
Δ
任家孚 ,陈鹏飞,阿 荣,李 婧(内蒙古医科大学附属医院心血管内科,呼和浩特 010050)
#
*
中图分类号 R965;R541.9 文献标志码 A 文章编号 1001-0408(2025)08-0920-06
DOI 10.6039/j.issn.1001-0408.2025.08.05
摘 要 目的 探讨乌司他丁(UTI)对顺铂(CP)诱导心肌损伤的改善作用及潜在机制。方法 将家兔随机分为空白组(blank组,
生理盐水2 mL/d,连续7 d),CP组(150 mg/m ,第1、4天)、乌司他丁低/高剂量组(UTIL组/UTIH组,UTL 2.5万单位/kg或5.0万单位/kg,
2
每天 1 次,连续 7 d+CP 150 mg/m ,第 1、4 天)、c-Jun 氨基端激酶(JNK)抑制剂组(JNKi 组,SP600125 15 mg/kg,第 1、4 天+CP 150
2
mg/m ,第1、4天+生理盐水2 mL/d,其余5 d)。除blank组外,其余各组家兔经一侧耳缘静脉注射相应药液和(或)生理盐水。检测
2
实验第 1 天和第 8 天各组家兔血清中肌钙蛋白Ⅰ(cTnⅠ)水平以及实验第 8 天其心肌组织中超氧化物歧化酶(SOD)、谷胱甘肽
(GSH)、丙二醛(MDA)水平,观察其心肌组织病理学改变和心肌细胞凋亡情况,检测其心肌组织中B细胞淋巴瘤2(Bcl-2)、Bcl-2
相关X蛋白(Bax)、JNK、磷酸化JNK(p-JNK)、线粒体裂解因子(Mff)、动力相关蛋白1(Drp1)的表达情况。结果 与blank组比较,
CP 组家兔第 8 天的心肌组织损伤明显,细胞凋亡指数、血清中 cTnⅠ水平和心肌组织中 MDA 水平以及 Bax、JNK、p-JNK、Mff、
Drp1蛋白的表达均显著升高或上调,SOD水平和Bcl-2蛋白的表达均显著降低或下调(P<0.05)。与CP组比较,各药物组家兔心
肌组织损伤均有所好转,细胞凋亡指数、血清中cTnⅠ水平和心肌组织中MDA以及Bax、JNK、p-JNK、Mff(UTIL组除外)、Drp1蛋
白的表达均显著降低或下调,SOD、GSH水平和Bcl-2蛋白的表达均显著升高或上调(P<0.05),且UTIH组、JNKi组部分指标的改
善显著优于UTIL组(P<0.05)。结论 UTI可改善CP诱导的心肌损伤,其潜在机制可能与拮抗氧化应激和抑制JNK/Mff信号通路
有关。
关键词 乌司他丁;顺铂;心肌损伤;JNK/Mff信号通路
Improvement effects and mechanism of ulinastatin on cisplatin-induced myocardial injury
REN Jiafu,CHEN Pengfei,A Rong,LI Jing(Dept. of Cardiovascular Medicine, the Affiliated Hospital of Inner
Mongolia Medical University, Hohhot 010050, China)
ABSTRACT OBJECTIVE To investigate the improvement effects and potential mechanism of ulinastatin (UTI) on cisplatin
(CP)-induced myocardial injury. METHODS Rabbits were used as study subjects and randomly divided into blank group (normal
saline 2 mL/d, for consecutive 7 d), CP group (150 mg/m , on the 1st and 4th day), UTI low-dose/high-dose group (UTIL/UTIH
2
group, UTL 25 000 or 50 000 IU/kg, once a day, for consecutive 7 d), c-Jun N-terminal kinase (JNK) inhibitor group (JNKi
group, SP600125 15 mg/kg, on the 1st and 4th day+CP 150 mg/m , on the 1st and 4th day+normal saline 2 mL/d, on the other 5
2
days). Except for the blank group, rabbits in the other groups were injected with relevant medicine and/or normal saline via a
marginal ear vein on one side. The serum level of cardiac troponin Ⅰ (cTnⅠ) in rabbits on the 1st and 8th days of the detection
experiment, as well as the levels of superoxide dismutase (SOD), glutathione (GSH) and malondialdehyde (MDA) in myocardial
tissue on the 8th day of the experiment, were all measured in each group. The pathological changes and myocardial cell apoptosis
in myocardial tissue were observed, and the protein expressions of B-cell lymphoma-2 (Bcl-2), Bcl-2 associated X protein (Bax),
JNK, phosphorylated JNK (P-JNK), mitochondrial fission factor (Mff), and dynamin-related protein 1 (Drp1) in myocardial
tissue were all determined. RESULTS Compared with the blank group, the CP group showed significant myocardial injury. The cell
apoptotic rate, the levels of cTn Ⅰ in serum and MDA in
Δ 基金项目 国 家 自 然 科 学 基 金 地 区 科 学 基 金 项 目(No.
82260075);内蒙古自治区自然科学基金项目(No.2024QN08043);内 myocardial tissue, as well as protein expressions of Bax,
蒙古自治区高等学校科学研究项目(No.NJZY23143);内蒙古医科大 JNK, p-JNK, Mff, and Drp1, were all significantly increased
学附属医院科研项目(No.2023NYFYGG020);内蒙古医科大学附属医 or up-regulated, SOD level and protein expression of Bcl-2
院高层次人才项目“航行系列” significantly reduced or down+regulated(P<0.05). Compared
*第一作者 副主任医师,硕士。研究方向:心肌损伤与修复。E-
with the CP group, the myocardial injury in rabbits from each
mail:rjf4516@163.com
# 通信作者 主任医师,副教授,硕士生导师,博士。研究方向:心 drug treatment group showed improvement. The cell apoptosis
脏重塑与心血管药物基因组学。E-mail:dpcddd@163.com index, the levels of cTnⅠ in serum and MDA in myocardial
· 920 · China Pharmacy 2025 Vol. 36 No. 8 中国药房 2025年第36卷第8期