华中科技大学学报(医学版) ›› 2026, Vol. 55 ›› Issue (2): 214-219.doi: 10.3870/j.issn.1672-0741.25.04.028

• 实验研究 • 上一篇    下一篇

通窍活血汤调控Caspase-3/GSDME通路介导的细胞焦亡改善阿尔茨海默病模型大鼠认知功能*

雷婷, 崔应麟, 程率芳, 王雪可   

  1. 河南省中医院(河南中医药大学第二附属医院)脑病科一区,郑州 450003
  • 收稿日期:2025-04-16 出版日期:2026-04-15 发布日期:2026-04-16
  • 通讯作者: E-mail:csf1225@sina.com
  • 作者简介:雷 婷,女,1992年生,主治医师,E-mail:ciuyueru@163.com
  • 基金资助:
    *河南省中医药科学研究专项计划资助(No.2022ZYZD07)

Tongqiao Huoxue Decoction Improves Cognitive Function in Alzheimer's Disease Rats byRegulating Caspase-3/GSDME Pathway-Mediated Pyroptosis

Lei Ting, Cui Yinglin, Cheng Shuaifang et al   

  1. The First Department of Encephalopathy,Henan Province Hospital of TCM(The Second Affiliated Hospital of Henan University of Chinese Medicine),Zhengzhou 450003,China
  • Received:2025-04-16 Online:2026-04-15 Published:2026-04-16
  • Contact: E-mail:csf1225@sina.com

摘要: 目的 探讨通窍活血汤(TQHXD)调控天冬氨酸特异性半胱氨酸蛋白酶-3(Caspase-3)/ Gasdermin E(GSDME)通路介导的细胞焦亡改善阿尔茨海默病(AD)模型大鼠认知功能的作用机制。方法 大鼠随机分为正常组、AD组、TQHXD低剂量组、TQHXD高剂量组、多奈哌齐组、TQHXD高剂量+Caspase-3激活剂(Raptinal)组,每组12只。除正常组外,其他组大鼠均通过双侧海马注射β淀粉样蛋白25-35(Aβ25-35)法构建AD模型,建模成功后分组给药处理,持续4周。Morris水迷宫实验检测各组大鼠认知功能;苏木精-伊红(HE)染色检测各组大鼠脑海马CA1区组织病理改变并进行神经病理评分;免疫荧光染色检测海马CA1区GSDME氨基端片段(GSDME-N)阳性细胞数;ELISA法检测海马CA1区中白细胞介素-1β(IL-1β)、IL-18水平;Western blot检测海马CA1区中裂解的半胱氨酸天冬氨酸蛋白酶3(cleaved Caspase-3)、GSDME-N蛋白表达水平。结果 与正常组比较,AD组大鼠神经元排列紊乱,核固缩,炎性细胞浸润明显;逃避潜伏期增加,跨越平台数减少;神经病理评分,海马CA1区组织中GSDME-N阳性细胞数,IL-1β、IL-18水平及cleaved Caspase-3、GSDME-N蛋白表达水平升高(均P<0.05)。与AD组比较,TQHXD低剂量组、TQHXD高剂量组、多奈哌齐组大鼠海马CA1区病理损伤减轻;逃避潜伏期减少,跨越平台数增加;神经病理评分,海马CA1区组织中GSDME-N阳性细胞数,IL-1β、IL-18水平及cleaved Caspase-3、GSDME-N蛋白表达水平降低(均P<0.05)。与TQHXD高剂量组比较,TQHXD高剂量+Raptinal组海马CA1区病理损伤更为严重;逃避潜伏期增加,跨越平台数减少;神经病理评分,海马CA1区组织中GSDME-N阳性细胞数,IL-1β、IL-18水平及cleaved Caspase-3、GSDME-N蛋白表达升高(均P<0.05)。结论 TQHXD可能通过抑制Caspase-3/GSDME通路抑制AD大鼠神经元焦亡及神经炎症,改善认知功能。

关键词: 通窍活血汤, 阿尔茨海默病, 神经元焦亡, 神经炎症, 认知功能

Abstract: Objective To investigate the mechanism by which Tongqiao Huoxue decoction(TQHXD) regulates the Caspase-3/Gasdermin E(GSDME)pathway-mediated pyroptosis to improve cognitive function in a rat model of Alzheimer's disease(AD). Methods Rats were randomly divided into the following groups(n=12):Normal group,AD group,TQHXD low-dose group,TQHXD high-dose group,donepezil group,and TQHXD high-dose+Caspase-3 activator(Raptinal)group.Except for the normal group,rats in the other groups received bilateral hippocampal injection of β-amyloid 25-35(Aβ25-35)to establish the AD model.After successful modeling,treatments were administered once daily for 4 weeks.Cognitive function was assessed using the Morris water maze test;HE staining was used to examine histopathological changes in the hippocampal CA1 region and assess neuropathological scores;the number of Gasdermin E N-terminal fragment(GSDME-N)-positive cells in the hippocampal CA1 region was determined by immunofluorescence staining;levels of interleukin-1β(IL-1β)and IL-18 in the hippocampal CA1 region were measured by ELISA;and the protein levels of cleaved Caspase-3 and GSDME-N in the hippocampal CA1 region were determined by Western blotting. Results Compared with the normal group,the AD group showed disordered neuronal arrangement,nuclear pyknosis,significant inflammatory cell infiltration,increased escape latency,decreased number of platform crossings,and increased neuropathological scores,number of GSDME-N-positive cells,and levels of IL-1β,IL-18,cleaved Caspase-3,and GSDME-N protein in the hippocampal CA1 region(all P<0.05).Compared with the AD group,the TQHXD low-dose group,TQHXD high-dose group,and donepezil group exhibited alleviated pathological damage in the hippocampal CA1 region,decreased escape latency,increased number of platform crossings,and decreased neuropathological scores,number of GSDME-N-positive cells,and levels of IL-1β,IL-18,cleaved Caspase-3,and GSDME-N protein in the hippocampal CA1 region(all P<0.05).Compared with the TQHXD high-dose group,the TQHXD high-dose+Raptinal group showed more severe pathological damage in the hippocampal CA1 region,increased escape latency,decreased number of platform crossings,and increased neuropathological scores,number of GSDME-N-positive cells,and levels of IL-1β,IL-18,cleaved Caspase-3,and GSDME-N protein(all P<0.05). Conclusion TQHXD may inhibit neuronal pyroptosis and neuroinflammation in AD rats by suppressing the Caspase-3/GSDME pathway,thereby improving cognitive function.

Key words: Tongqiao Huoxue decoction, Alzheimer's disease, neuronal pyroptosis, neuroinflammation, cognitive function

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