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茯苓酸通过调控 PINK1/Parkin 信号通路介导的线粒体自噬改善

          冠心病大鼠心肌损伤
                                          Δ


          谢 建 ,高 波,梁珊珊,杨 清,郭思言 ,龚龙家(湖北医药学院附属随州医院心血管内科,湖北 随州
                                                 #
                *
          441300)

          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2025)18-2267-06
          DOI  10.6039/j.issn.1001-0408.2025.18.09

          摘  要  目的  探讨茯苓酸(Pac)是否通过调控PTEN诱导激酶1(PINK1)/Parkin RBR E3泛素蛋白连接酶(Parkin)信号通路介导
          线粒体自噬来改善冠心病(CHD)大鼠的心肌损伤。方法  将SD大鼠分为对照(Con)组、CHD组、Pac低剂量组(Pac-L组)、Pac高
          剂量组(Pac-H 组)、Pac 高剂量+PINK1/Parkin 信号通路抑制剂组(Pac-H+3-MA 组),每组 10 只。除 Con 组外,其余各组大鼠建立
          CHD模型。造模成功后,各组大鼠腹腔注射相应药物或生理盐水。连续干预4周后,检测大鼠左室射血分数(LVEF)、左室舒张末
          容积(LVEDV)、左室收缩末容积(LVESV)、平均动脉压(MAP),血清中肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)、肌钙蛋白I
         (cTnI)、肌钙蛋白 T(cTnT)水平,心肌组织中肿瘤坏死因子 α(TNF-α)、白细胞介素 10(IL-10)、IL-1β、活性氧(ROS)、丙二醛
         (MDA)水平和过氧化氢酶(CAT)、超氧化物歧化酶(SOD)活性,以及p62、活化型胱天蛋白酶3(cleaved caspase-3)、Parkin、PINK1
          蛋白表达量与微管相关蛋白1轻链3Ⅱ型(LC3Ⅱ)/LC3Ⅰ比值;观察心肌组织形态和线粒体自噬囊泡,统计单位面积线粒体自噬
          囊泡数量和心肌细胞凋亡率。结果  与CHD组比较,Pac-L组和Pac-H组大鼠的LVEF,MAP,IL-10水平,CAT、SOD活性,p62、Par‐
          kin、PINK1 蛋白表达量,LC3Ⅱ/LC3Ⅰ值,单位面积线粒体自噬囊泡数量均显著升高(P<0.05);LVEDV、LVESV、CK-MB、LDH、
          cTnI、cTnT、TNF-α、IL-1β、ROS和MDA水平,细胞凋亡率,cleaved caspase-3蛋白表达量均显著降低(P<0.05);且Pac-H组各指标
          改变更显著(P<0.05);两组心肌组织病理形态均有不同程度改善。与 Pac-H 组比较,Pac-H+3-MA 组大鼠上述指标均显著逆转
         (P<0.05)。结论  Pac可能通过激活PINK1/Parkin信号通路促进CHD大鼠心肌细胞线粒体自噬,从而减轻炎症反应和氧化应激,
          改善心肌损伤。
          关键词  茯苓酸;PINK1/Parkin信号通路;冠心病;心肌细胞;线粒体自噬

          Improvement  effects  of  pachymic  acid  on  myocardial  injury  in  coronary  heart  disease  rats  by  regulating
          mitochondrial autophagy mediated by the PINK1/Parkin signaling pathway
          XIE Jian,GAO Bo,LIANG Shanshan,YANG Qing,GUO Siyan,GONG Longjia(Dept.  of  Cardiovas  Medicine,
          Suizhou Hospital, Hubei University of Medical, Hubei Suizhou 441300, China)

          ABSTRACT   OBJECTIVE  To  explore  whether  pachymic  acid (Pac)  regulates  mitochondrial  autophagy  mediated  by  the  PTEN-
          induced  kinase  1 (PINK1)/Parkin  RBR  E3  ubiquitin-protein  ligase (Parkin)  signaling  pathway  to  alleviate  myocardial  injury  in
          coronary heart disease (CHD) rats. METHODS SD rats were divided into control (Con) group, CHD group, Pac low-dose group
         (Pac-L  group),  Pac  high-dose  group (Pac-H  group),  Pac-H+PINK1/Parkin  signaling  pathway  inhibitor  group (Pac-H+3-MA
          group), with 10 rats in each group. Except for the Con group, CHD models were established in the remaining groups of rats. After
          successful  modeling,  the  rats  in  each  group  were  intraperitoneally  injected  with  the  corresponding  drugs  or  normal  saline.  After
          continuous intervention for 4 weeks, the left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV),
          left ventricular end-systolic volume (LVESV), and mean arterial pressure (MAP) of the rats were detected. The levels of creatine
          kinase  isoenzyme (CK-MB),  lactate  dehydrogenase (LDH),  cardiac  troponin  I (cTnI),  and  cardiac  troponin  T (cTnT)  in  the
          serum, as well as the levels of tumor necrosis factor-α (TNF-α), interleukin-10 (IL-10), IL-1β, reactive oxygen species (ROS),
          malondialdehyde (MDA) in the myocardial tissue, and the activities of catalase (CAT) and superoxide dismutase (SOD), as well
          as  the  expression  levels  of  p62,  cleaved  caspase-3,  Parkin,  PINK1  proteins  and  the  ratio  of  microtubule-associated  protein  1  light
          chain 3 Ⅱ (LC3Ⅱ)/LC3Ⅰ ratio were measured. The morphology of myocardial tissue and mitochondrial autophagic vesicles were
          observed, and the number of mitochondrial autophagic vesicles per unit area and the rate of cardiomyocyte apoptosis were counted.
                                                             RESULTS  Compared  with  CHD  group,  LVEF,  MAP,  IL-10
             Δ 基金项目 湖北省自然科学基金项目(No.2023AFC049)
             *第一作者 副主任医师,硕士。研究方向:冠心病、心律失常、心                  levels,  CAT  and  SOD  activities,  p62,  Parkin,  PINK1  protein
                                                             expressions,  LC3Ⅱ/LC3Ⅰ  ratio,  the  numbers  of  mitochondrial
          血管药理学。E-mail:xj1980x@163.com
             # 通信作者 副主任医师,硕士。研究方向:心血管药理学。                    autophagic  vesicles  per  unit  area  in  the  Pac-L  and  Pac-H
          E-mail:hzdpft@163.com                              groups  were  increased  significantly (P<0.05);  the  levels  of


          中国药房  2025年第36卷第18期                                              China Pharmacy  2025 Vol. 36  No. 18    · 2267 ·
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