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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
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