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槲皮素对心肌缺血后线粒体能量代谢功能的影响
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          王盼盼 ,杨 赞,刘冬兰,周 怡(青海大学生态环境工程学院,西宁 810016)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)04-0401-06
          DOI  10.6039/j.issn.1001-0408.2024.04.04

          摘  要  目的  探究槲皮素对心肌缺血后线粒体能量代谢功能的影响。方法  将H9c2心肌细胞分为空白组,模型组,槲皮素高、
          中、低剂量组(40、20、10 μmol/L)和阳性对照组(环孢菌素 A 1 μmol/L),细胞缺氧处理后,检测活性氧(ROS)、线粒体膜电位
         (MMP)、线粒体膜通透性转换孔(MPTP)开放程度、腺苷三磷酸(ATP)、丙二醛(MDA)、乳酸脱氢酶(LDH)和肌酸激酶(CK)的变
          化。将大鼠随机分为假手术组,模型组,槲皮素高、中、低剂量组(100、50、25 mg/kg)和阳性对照组(曲美他嗪 6.3 mg/kg),每组 8
          只,灌胃相应药物,每天1次,连续7 d;大鼠末次给药后,通过冠状动脉左前降支结扎建立心肌缺血模型,检测血清中LDH、MDA、
          肌酸激酶同工酶 MB(CK-MB)、超氧化物歧化酶(SOD)、线粒体呼吸链复合物Ⅰ(complex Ⅰ)、complex Ⅳ和 ATP 的含量。结果
          与模型组比较,槲皮素高、中、低剂量组和阳性对照组细胞中ROS荧光强度、MPTP开放程度和CK、LDH、MDA含量均显著降低,
          MMP 和 ATP 含量均显著升高(P<0.01);槲皮素高、中、低剂量组和阳性对照组大鼠血清中 CK-MB、LDH 和 MDA 含量均显著降
          低,SOD、complex Ⅰ、complex Ⅳ和ATP(阳性对照组除外)含量均显著升高(P<0.05或P<0.01)。结论  槲皮素能有效减轻心肌
          缺氧损伤,促进内源性能量的生成,改善心肌缺血后线粒体功能。
          关键词  槲皮素;心肌缺血;缺血性心脏病;线粒体;能量代谢

          Effects of quercetin on mitochondrial energy metabolism function after myocardial ischemia
          WANG Panpan,YANG Zan,LIU Donglan,ZHOU Yi(College  of  Eco-environmental  Engineering,  Qinghai
          University, Xining 810016, China)


          ABSTRACT   OBJECTIVE  To  investigate  the  effects  of  quercetin  on  mitochondrial  energy  metabolism  function  after  myocardial
          ischemia.  METHODS  H9c2  cells  were  divided  into  blank  group,  model  group,  quercetin  high-dose,  medium-dose  and  low-dose
          groups (40,  20,  10  μmol/L),  and  positive  control  group (cyclosporine  A,  1  μmol/L).  Reactive  oxygen  species (ROS),
          mitochondrial  membrane  potential  (MMP),  openness  of  mitochondrial  permeability  transition  pore  (MPTP),  adenosine
          triphosphate (ATP),  malondialdehyde (MDA),  lactate  dehydrogenase (LDH)  and  creatine  kinase (CK)  were  observed  after  cell
          hypoxia  treatment.  Rats  were  randomly  assigned  into  sham  operation  group,  model  group,  quercetin  high-dose,  medium-dose  and
          low-dose  groups (100,  50,  25  mg/kg),  and  positive  control  group (trimetazidine,  6.3  mg/kg),  with  8  rats  in  each  group.  They
          were  given  relevant  medicine  intragastrically,  once  a  day,  for  7  consecutive  days. After  the  last  medication,  myocardial  ischemia
          model  was  induced  by  the  ligation  of  the  left  anterior  descending  branch  of  the  coronary  artery.  The  contents  of  LDH,  MDA,
          creatine  kinase  isoenzyme-MB (CK-MB),  superoxide  dismutase (SOD),  complex  Ⅰ,  complex  Ⅳ  and  ATP  in  serum  were  all
          determined.  RESULTS  Compared  with  the  model  group,  ROS  fluorescence  intensity,  openness  of  MPTP,  the  contents  of  CK,
          LDH  and  MDA  were  significantly  decreased  in  quercetin  low-dose,  medium-dose  and  high-dose  groups,  and  positive  control
          group, while the contents of MMP and ATP were all increased significantly (P<0.01); the contents of CK-MB, LDH and MDA in
          serum  were  all  decreased  significantly  in  quercetin  low-dose,  medium-dose  and  high-dose  groups,  and  positive  control  group,
          while the contents of SOD, complex Ⅰ, complex Ⅳ and ATP (except for positive control group) were increased significantly (P<
          0.05  or  P<0.01).  CONCLUSIONS  Quercetin  can  effectively  reduce  myocardial  hypoxic  injury,  promote  endogenous  energy
          production and improve mitochondrial function after myocardial ischemia.
          KEYWORDS    quercetin; myocardial ischemia; myocardial ischemia; mitochondria; energy metabolism



             Δ 基金项目 国家自然科学基金项目(No.82060731)                      心血管疾病是全球范围内造成死亡的主要原因之
             *第一作者 硕士研究生。研究方向:资源生物学。E-mail:                  一,严重影响了人们的生存和生活质量。缺血性心脏病
          wp04100827@163.com
                                                            (ischemic heart disease,IHD)在心血管疾病中所占比例
             # 通信作者 副教授,硕士生导师,博士。研究方向:藏药药理学。
          电话:0971-5310086。E-mail:2013990028@qhu.edu.cn       较高,是临床上常见病种,其主要临床表现为心肌梗死,


          中国药房  2024年第35卷第4期                                                 China Pharmacy  2024 Vol. 35  No. 4    · 401 ·
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