维生素B6在所有菌性上激活AMPK,以促进小鼠的脑后血管新生
Xue-Qing Wang1, Sen Yin2, Qian-Wen Wang3
1State Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China; Department of Cardiovascular Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
European journal of pharmacology
|February 22, 2025
概括
维生素B6 (VB6) 通过促进血管生长,增强急性心肌梗塞后的心脏恢复. 这种维生素激活AMP激活蛋白激酶 (AMPK),改善心脏功能并减少损伤.
科学领域:
- 心血管科学 心血管科学
- 分子生物学分子生物学
- 再生医学是一种再生医学.
背景情况:
- 血管生成对于急性心肌梗塞 (AMI) 后的心脏功能恢复至关重要.
- 以前的研究表明,维生素B6 (VB6) 可以预防心血管疾病.
- 在AMI之后,VB6在促进血管生成和预防心脏功能障碍方面的作用尚未被探索.
研究的目的:
- 调查维生素B6 (VB6) 是否促进血管生成,以预防急性心肌梗塞 (AMI) 后的心脏功能障碍.
- 阐明VB6对血管生成和心脏功能的影响背后的分子机制.
主要方法:
- 在体外:通过人类静脉内皮细胞 (HUVEC) 迁移和管管形成评估血管生成.
- 在体外:测量AMP激活蛋白激酶 (AMPK) 酸化和血管内皮生长因子A (VEGF-A) 生产.
- 在体内:在AMI后的小鼠中评估了新血管化 (CD31染色) 和心脏功能 (心声).
- 机理学研究涉及AMPK抑制剂和激活剂.
主要成果:
- VB6上调了HUVEC迁移和管状体的形成,与AMPK酸化和VEGF-A的增加有关.
- 这些由VB6引起的效应被AMPK抑制剂 (化合物C) 和激活剂 (991) 阻止.
- 通过与AMPKβ亚单元的相互作用,VB6通过基激活AMPK,稳定AMPK复合体并增强AMPKα-T172酸化.
- 在体内,VB6补充改善了心脏功能,增加了新血管化,并在AMI后的小鼠中减少了细胞因子.
结论:
- 维生素B6通过AMP激活蛋白激酶 (AMPK) 介导的血管生成促进AMI后的心脏功能恢复.
- VB6的机制涉及AMPK的全激活,导致增强内皮细胞功能和新血管化.
- VB6在限制缺血性心脏损伤和改善急性心肌梗塞后的结果方面显示出潜力.
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