文章摘要
李琦,王岚宁,龙欣悦,符瑶,荆文馨,杨春壮,徐传冰,林强.基于PI3K/Akt信号通路探讨川芎嗪对缺血性脑卒中的抗凋亡作用[J].中医药信息,2025,42(10):41-45
基于PI3K/Akt信号通路探讨川芎嗪对缺血性脑卒中的抗凋亡作用
Anti-Apoptotic Effect of Ligustrazine on Ischemic Stroke via PI3K/Akt Signaling Pathway
投稿时间:2025-03-21  录用日期:2025-04-07
DOI:10.19656/j.cnki.1002-2406.20251008
中文关键词: 川芎嗪  缺血性脑卒中  凋亡  PI3K/Akt信号通路
英文关键词: Ligustrazine  Ischemic stroke  Apoptosis  PI3K/Akt signaling pathway
基金项目:黑龙江省卫生健康委科技计划(20220101020614);2022年度黑龙江省省属高等学校基本科研业务费科研项目(2022-KYYWF-0665);2023年度黑龙江省省属高等学校基本科研业务费科研项目(2023-KYYWF-0938)
作者单位
李琦,王岚宁,龙欣悦,符瑶,荆文馨,杨春壮,徐传冰,林强  
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中文摘要:
      目的:观察川芎嗪(TMP)对缺血性脑卒中(IS)大鼠脑内PI3K/Akt信号通路和凋亡蛋白表达的影响。方法:SD大鼠随机分为假手术组、模型组、川芎嗪组以及尼莫地平组,参考改良线栓法构建脑缺血再灌注损伤(MCAO)大鼠模型,每组12只。川芎嗪组给予TMP 50 mg/kg,尼莫地平组给予尼莫地平50 mg/kg,假手术组和模型组给予等体积生理盐水溶液,均腹腔注射给药,每日1次,连续1周。采用Longa方法进行神经功能评分,采用2,7-二氯荧光素二乙酸酯(DCFH-DA)探针荧光染色法测定大鼠缺血区活性氧(ROS)的含量,Western blot检测缺血侧脑组织中PI3K/Akt信号通路和凋亡蛋白Bax和Caspase-3的蛋白含量。结果:与假手术组比较,模型组神经功能受损严重(P < 0.001);与模型组比较,川芎嗪组与尼莫地平组神经功能评分降低(P < 0.01),ROS含量降低(P < 0.01),PI3K、Akt蛋白表达增加(P < 0.01),Bax、Caspase-3蛋白表达降低(P < 0.01);与尼莫地平组比较,川芎嗪组神经功能评分降低(P < 0.05),ROS含量降低(P < 0.05),PI3K、Akt蛋白表达增加(P < 0.05),Bax、Caspase-3蛋白表达减少(P < 0.05)。结论:TMP能抑制IS发生后凋亡蛋白的表达,发挥抗凋亡作用,且其机制可能与调控PI3K/Akt信号通路有关。
英文摘要:
      Objective: To investigate the effects of ligustrazine (TMP) on PI3K/Akt signaling pathway and apoptotic protein expression in rat's brain with ischemic stroke (IS). Methods: SD rats were randomly divided into sham group, model group, TMP group, and nimodipine group (n = 12 each). Middle cerebral artery occlusion (MCAO) models were established using modified suture-occlusion method. The TMP group received TMP (50 mg/kg), nimodipine group received nimodipine (50 mg/kg), while sham and model groups received equalvolume saline, all groups administered intraperitoneally once daily for 1 week. Neurological deficits were assessed using Longa score. ROS levels in ischemic areas were measured by DCFH-DA fluorescent probe. Western blot detected PI3K/Akt signaling pathway and apoptotic proteins (Bax, Caspase-3) in ischemic brain tissues. Results: Compared with sham group, the model group showed severe neurological impairment (P < 0.001). Compared with model group, both TMP and nimodipine groups exhibited: reduced neurological scores (P < 0.01), decreased the content of ROS (P < 0.01), increased PI3K/Akt protein expression (P < 0.01), and downregulated Bax/Caspase-3 (P < 0.01). Compared with nimodipine group, the TMP group demonstrated: lower neurological scores (P < 0.05), reduced ROS (P < 0.05), higher PI3K/Akt expression (P < 0.05), and decreased the protein expression of Bax/Caspase-3 (P < 0.05). Conclusion: TMP inhibits apoptotic protein expression post IS, exerting anti apoptotic effects potentially through PI3K/Akt pathway modulation.
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