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·药学研究·


          延胡索总生物碱对糖尿病心肌病大鼠铜死亡的调控作用及机制
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          李 君 ,齐雅芝,唐 娅,曹 睿,徐 强,韩玉生(黑龙江中医药大学基础医学院,哈尔滨 150040)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2025)07-0801-06
          DOI  10.6039/j.issn.1001-0408.2025.07.06

          摘  要  目的  基于沉默信息调节因子 1(Sirt1)/肿瘤抑制因子 53(P53)信号通路,探讨延胡索总生物碱(TAC)对糖尿病心肌病
         (DCM)大鼠铜死亡的调控作用及机制。方法  采用高脂高糖饲料喂养+腹腔注射链脲佐菌素建立DCM大鼠模型。取32只造模
          成功的大鼠随机分为模型组和TAC低、中、高剂量组(7、10.5、14 mg/kg),每组8只。另取8只大鼠以正常饲料喂养作为正常对照
          组。各组大鼠灌胃相应药物或生理盐水,每天1次,连续4周。末次给药后,检测大鼠空腹血糖(FBG)水平;检测大鼠血清和心肌
          组织中肌酸激酶(CK)、CK同工酶MB(CK-MB)、乳酸脱氢酶(LDH)水平;观察大鼠心肌组织病理学形态、纤维化程度及Cu 沉积
                                                                                                        2+
          情况;检测大鼠心肌组织中 Cu 、谷胱甘肽(GSH)水平以及 Sirt1/P53 信号通路相关蛋白[Sirt1、P53、溶质家族载体 7 成员 11
                                  2+
         (SLC7A11)]、铁硫簇相关蛋白[铁氧还蛋白1(FDX1)、硫辛酸合成酶(LIAS)、线粒体乌头酸酶2(ACO2)、泛醌氧化还原酶核心亚
          基 S8(NDUFS8)、二氢硫辛酸乙酰基转移酶(DLAT)、二氢硫辛酸二酰基转移酶(DLST)]、热休克蛋白 70(HSP70)表达水平。
          结果  与正常对照组相比,模型组大鼠FBG水平,血清和心肌组织中CK、CK-MB、LDH水平,心肌组织中Cu 水平以及P53、HSP70
                                                                                            2+
          蛋白表达水平均显著升高(P<0.05);心肌组织中GSH水平和Sirt1、SLC7A11、FDX1、LIAS、ACO2、NDUFS8、DLAT、DLST蛋白表
          达水平均显著降低(P<0.05);心肌组织病理损伤严重,出现较多炎症细胞浸润,且纤维化明显,Cu 沉积增多。与模型组比较,
                                                                                      2+
          TAC各剂量组大鼠上述大部分定量指标均显著逆转(P<0.05);心肌组织病理损伤减轻,纤维化和Cu 沉积减少。结论  TAC可改
                                                                                       2+
          善大鼠DCM,其作用机制可能与激活Sirt1/P53信号通路活性,促进GSH与Cu 的螯合作用,抑制心肌细胞铜死亡有关。
                                                                     2+
          关键词  延胡索总生物碱;糖尿病心肌病;铜死亡;Sirt/P53信号通路;铁硫簇

          Effects  and  mechanism  of  total  alkaloids  of  Corydalis  Rhizoma  on  the  regulation  of  cuproptosis  in  rats
          with diabetic cardiomyopathy
          LI Jun,QI Yazhi,TANG Ya,CAO Rui,XU Qiang,HAN Yusheng(School  of  Basic  Medicine,  Heilongjiang
          University of Chinese Medicine, Harbin 150040, China)

          ABSTRACT   OBJECTIVE  To  investigate  the  effects  and  mechanism  of  total  alkaloids  of  Corydalis  Rhizoma (TAC)  on  the
          regulation of cuproptosis in rats with diabetic cardiomyopathy (DCM) based on silence information regulator 1(Sirt1)/tumor protein
          53(P53)signaling pathway. METHODS DCM rat model was induced by high-fat and high-sugar diet and intraperitoneal injection of
          streptozotocin. Thirty-two model rats were randomly divided into model group, TAC low-dose, medium-dose and high-dose groups
         (7,  10.5,  14  mg/kg),  with  8  rats  in  each  group.  An  additional  8  rats  were  assigned  to  normal  control  group.  Related  drugs  or
          normal  saline  were  administered  intragastrically  in  each  group,  once  a  day,  for  4  weeks.  After  the  last  medication,  the  fasting
          blood glucose (FBG) levels of the rats were measured. The levels of myocardial creatine kinase (CK), creatine kinase isoenzyme
         (CK-MB),  and  lactate  dehydrogenase (LDH)  in  serum  and  myocardial  tissue  of  rats  were  all  detected.  The  pathological
          morphology,  fibrosis  degree,  and  Cu   deposition  of  myocardial  tissue  in  rats  were  observed.  The  levels  of  Cu and  glutathione
                                      2+
                                                                                                2+
         (GSH)  in  myocardial  tissue,  the  expressions  of  Sirt1/P53  signaling  pathway-related  proteins  [Sirt1,  P53,  solute  carrier  family  7
          membrane  11 (SLC7A11)],  and  iron-sulfur  cluster-related  proteins  [ferredoxin  1 (FDX1),  lipoic  acid  synthetase (LIAS),
          aconitase 2 (ACO2), NADH-ubiquinone oxidoreductase core subunit S8 (NDUFS8), dihydrolipoamide acetyltransferase (DLAT),
          dihydrolipoamide  succinyltransferase (DLST)],  and  heat  shock  protein  70 (HSP70)  were  all  determined.  RESULTS  Compared
                                                             with  normal  control  group,  the  model  group  exhibited
             Δ 基金项目 国家自然科学基金面上项目(No.82074530);黑龙江            significantly  elevated  levels  of  FBG,  CK,  CK-MB  and  LDH
          中医药大学科研基金项目(No.X200902)                            in  both  serum  and  myocardial  tissue,  as  well  as  increased
             *第一作者 硕士研究生。研究方向:中医药防治心脑血管疾病的
                                                             levels  of  Cu   in  myocardial  tissue  and  the  expression  of  P53
                                                                       2+
          基础与临床研究。E-mail:li15716801494@163.com
             # 通信作者 高级实验师,硕士。研究方向:中医药防治心脑血管                  and  HSP70  proteins (P<0.05);  the  level  of  GSH  and  the
          疾病的基础与临床研究。E-mail:hysh1973@126.com                 expression  levels  of  Sirt1,  SLC7A11,  FDX1,  LIAS,  ACO2,


          中国药房  2025年第36卷第7期                                                 China Pharmacy  2025 Vol. 36  No. 7    · 801 ·
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