实用医学杂志 ›› 2022, Vol. 38 ›› Issue (10): 1193-1197.doi: 10.3969/j.issn.1006⁃5725.2022.10.004

• 基础研究 • 上一篇    下一篇

沙库巴曲缬沙坦对慢性心力衰竭兔心室重构的影响

刘立天1 王家琦2 谢悦陶1 张飞飞1 党懿1 齐晓勇1   

  1. 1 河北省人民医院心血管内科(石家庄 050051);2 河北北方学院研究生院(河北张家口075000)

  • 出版日期:2022-05-25 发布日期:2022-05-25
  • 通讯作者: 齐晓勇 E⁃mail:hbghxiaoyong_q@126.com
  • 基金资助:
    河北省自然科学基金(编号:H2020307017);河北省 2019 年度医学科学研究课题(编号:20190237)

Effect of sacubitril valsartan on ventricular remodeling in rabbits with chronic heart failure

LIU Litian*, WANG Jiaqi,XIE Yuetao,ZHANG Feifei,DANG Yi,QI Xiaoyong.   

  1. Department of Cardiac Center,Hebei General Hospital,Shijiazhuang 050051,China

  • Online:2022-05-25 Published:2022-05-25
  • Contact: QI Xiaoyong E⁃mail:hbghxiaoyong_q@126.com

摘要:

目的 观察沙库巴曲缬沙坦对慢性心力衰竭兔心室肌重构的影响并探讨其机制。方法 30 尺新西兰大白兔随机分为 3 组(假手术组、心衰组及沙库巴曲缬沙坦组),心衰组、沙库巴曲缬沙坦组 建立慢性心衰兔模型。沙库巴曲缬沙坦组给予沙库巴曲缬沙坦(10 mg/kg)灌胃,假手术组及心衰组给予 等量生理盐水灌胃。检测心脏彩超及血清 N 末端脑钠肽前体(NT⁃proBNP),行 Western blot 检测信号通路 相关蛋白表达水平。结果 与心衰组比较,沙库巴曲缬沙坦组α⁃SMA、ColⅠ、ColⅢ、MMP2、MMP9、TGF⁃β Smad2、Smad3 蛋白水平降低,Smad6 Smad7 蛋白表达水平升高。结论 沙库巴曲缬沙坦可通过调控 TGFβ/Smad 信号通路影响胶原纤维的沉积、降解,降低心肌纤维化,改善心肌重构。

关键词:

沙库巴曲缬沙坦, 慢性心力衰竭, 心室肌重构

Abstract:

Objective To observe the effect of sacubitril valsartan on ventricular remodeling in rabbits with chronic heart failure and explore its underlying mechanisms. Methods Rabbit models of chronic heart failure were established in the heart failure group and sacubitril valsartan group. The sacubitril valsartan group was given sacubitril valsartan(10 mg/kg)intragastric administration;the sham operation group and the heart failure group the equivalent amount of normal saline. Echocardiography and N⁃terminal pro⁃brain natriuretic peptide(NT⁃proBNP in serum were detected,and western blot was performed to evaluate the expression level of signaling pathway related proteins,as well as the protein expression level of α⁃ SMA,ColⅠ,ColⅢ,MMP2,MMP9,TIMP1,TGF ⁃β Smad2,Smad3,Smad6 and Smad7. Results Compared with the heart failure group,the protein level of α⁃SMA ColⅠ,ColⅢ,MMP2,MMP9,TGF⁃β,Smad2 and Smad3 in the sacubitril valsartan group decreased,while the protein expression level of Smad6 and Smad7 increased. Conclusion Sacubitril valsartan can affect collagen fiber deposition and degradation,reduce myocardial fibrosis and improve myocardial remodeling by regulating the TGFβ/ Smad signaling pathway.

Key words:

sacubitril valsartan, chronic heart failure, ventricular remodeling