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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 ·