维生素D可以减少VSMC泡细胞的形成,并防止AS的进展
The Journal of endocrinology
|February 17, 2025
概括
维生素D减少了血管光滑肌肉细胞泡细胞的形成和动脉样硬化的进展. 它通过通过JNK通路抑制托尔类受体4 (TLR4) 信号来实现这一目标,从而提供了一个潜在的治疗策略.
科学领域:
- 心血管生物学 心血管生物学
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
背景情况:
- 血管光滑肌细胞 (VSMC) 衍生的泡细胞是动脉样硬化的关键驱动因素.
- 收费类受体4 (TLR4) 调节VSMC泡细胞的形成,而维生素D可能会抑制这一过程.
研究的目的:
- 调查维生素D是否抑制VSMC泡细胞的形成.
- 确定TLR4在维生素D对VSMC泡细胞和动脉样硬化的作用中的作用.
主要方法:
- 评估了维生素D对VSMC泡细胞和动脉样硬化斑块在ApoE-/-小鼠中的影响.
- 在体内和体外检查了胆固醇运输基因和TLR4表达.
- 研究了在培养的VSMC中对牛-LDL介导的泡细胞形成的1,25(OH) 2D3影响.
主要成果:
- 补充维生素D显著降低了动脉样硬化斑块和VSMC泡细胞的发展.
- 维生素D调节了关键胆固醇运输基因 (TLR4,CD36,SR-A,ABCA1,ABCG1,LXR-α) 的表达.
- 1,25(OH) 2D3降低了ox-LDL的吸收,增加了NBD-LDL流量,并通过VSMC中的JNK激活抑制了TLR4信号.
结论:
- 维生素D抑制VSMC泡细胞的形成,并防止动脉样硬化进展.
- 维生素D的保护作用涉及JNK-TLR4信号通路.
- 维生素D通过向VSMC泡细胞通路,显示出作为动脉样硬化治疗剂的潜力.
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