实用医学杂志 ›› 2024, Vol. 40 ›› Issue (12): 1637-1642.doi: 10.3969/j.issn.1006-5725.2024.12.005

• 基础研究 • 上一篇    下一篇

瞬时受体电位通道5对间歇性低氧致心肌焦亡的影响

邱璇1,沙热扎提·依沙江2,陈玉岚1(),王蒙蒙1,李瑜3,古丽娜孜·吐拉洪1,祖柏旦·阿布汉1,阿丽亚·阿不力孜1,王星晨1   

  1. 1.新疆医科大学第一附属医院,心血管病中心高血压科,(乌鲁木齐 830000 )
    2.新疆医科大学第一附属医院,干部保健中心综合内二科,(乌鲁木齐 830000 )
    2.新疆维吾尔自治区人民医院高血压中心 (乌鲁木齐 830000 )
  • 收稿日期:2023-08-23 出版日期:2024-06-25 发布日期:2024-06-14
  • 通讯作者: 陈玉岚 E-mail:sheliachen@sina.com
  • 基金资助:
    国家自然科学基金资助项目(82060058)

Effect of transient receptor potential channel 5 on myocardial pyroptosis in intermittent hypoxia

Xuan QIU1,Yishajiang SHAREZATI2,Yulan CHEN1(),Mengmeng WANG1,Yu LI3,Tulahong GULINAZI1,Abuhan ZUBAIDAN1,Abulizi ALIYA1,Xingchen WANG1   

  1. Department of Hypertension,the First Affiliated Hospital of Xinjiang Medical University,Urumqi 830000,China
  • Received:2023-08-23 Online:2024-06-25 Published:2024-06-14
  • Contact: Yulan CHEN E-mail:sheliachen@sina.com

摘要:

目的 探讨瞬时受体电位通道5(TRPC5)对间歇性低氧致心肌焦亡的影响。 方法 TRPC5-/-大鼠及SD大鼠各12只,两种大鼠分别随机分为慢性间歇性低氧组(CIH组)和常氧组(Control组),即WT-Control组、WT-CIH组、TRPC5-/--Control组、TRPC5-/--CIH组,每组6只。通过Masson染色观察大鼠心肌纤维化情况,ELISA检测血清炎症因子水平,Western blot检测TRPC5及焦亡相关蛋白相对表达水平。 结果 Masson染色显示,TRPC5-/--CIH组胶原容积分数高于TRPC5-/--Control组,低于WT-CIH组。ELISA结果显示,TRPC5-/--CIH组血清IL-1、IL-6、TGF-β水平高于TRPC5-/--Control组,低于WT-CIH组。Western Blot结果显示,TRPC5-/--CIH组焦亡相关蛋白Caspase-1、NLRP3、GSDMD、GSDMD-N相对表达量高于TRPC5-/--Control组、低于WT-CIH组。 结论 TRPC5缺乏减轻间歇性低氧导致的心肌焦亡,并改善心肌纤维化。

关键词: 瞬时受体电位通道5, 炎症因子, 焦亡, 间歇性低氧, OSAHS

Abstract:

Objective To investigate the effect of TRPC5 on intermittent hypoxia-induced myocardial pyroptosis. Methods TRPC5 knock out (TRPC5-/-) and SD rats were each randomly divided into chronic intermittent hypoxia group (CIH group) and normoxia group (Control group) (n = 6 for each group). The myocardial fibrosis in rats was visualized by Masson staining, the levels of serum inflammatory factors were measured by ELISA and the relative expression levels of TRPC 5 and pyroptosis-related proteins were determined by Western blotting. Results Masson staining showed that the collagen volume fraction in the TRPC5-/--CIH group was higher than that in the TRPC5-/--Control group and lower than that in the WT-CIH group. The ELISA results showed that the serum levels of IL-1, IL-6, and TGF-β in the TRPC5-/--CIH group were higher than those in the TRPC5-/--Control group and lower in the WT-CIH group. Western blotting results showed that the relative expression levels of pyroptosis related proteins caspase-1, NLRP3, GSDMD, and GSDMD-N in the TRPC5-/--CIH group were higher than those in the TRPC5-/--Control group and lower than those in the WT-CIH group. Conclusion TRPC5 deficiency alleviates myocardial pyroptosis and myocardial fibrosis induced by hypoxia.

Key words: transient receptor potential channel 5, inflammatory factor, pyroptosis, intermittent hypoxia, OSAHS

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