溶性RAGE通过抑制INTERLEUKIN-6减轻心肌的I/R损伤,从而减轻心肌的I/R损伤
Jie Zhang1, Jian Liu1, Jiming Yin2
1Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaomin Lane, Dongcheng District, Beijing 100730, PR China.
The American journal of the medical sciences
|August 7, 2024
概括
高级糖化最终产品的可溶性受体 (sRAGE) 通过抑制炎症M1巨细胞和降低IL-6而减少心肌缺血/反 (I/R) 损伤. 这项研究表明,sRAGE保护心脏功能,并减少I/R损伤中心脏病发作的大小.
科学领域:
- 心血管研究研究心血管研究
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 在心肌缺血/反 (I/R) 损伤中,炎症反应至关重要.
- 先进的糖化最终产品 (RAGE) 的受体在心肌I/R损伤中调解炎症.
- 可溶性RAGE (sRAGE),一个诱受体,可以通过减少炎症来减轻I / R损伤.
研究的目的:
- 调查sRAGE在心肌内心I/R损伤中的作用.
- 检查急性心肌梗塞 (AMI) 患者的sRAGE水平和炎症媒介之间的相关性.
- 评估心脏特异性sRAGE过度表达在I/R损伤的小鼠模型中的保护作用.
主要方法:
- 在AMI患者和对照人群中测量了血炎症媒介.
- 在接受I/R的sRAGE敲入小鼠中评估心脏功能,心脏病发作大小和巨表型.
- 量化了sRAGE,IL-1,IL-6,IL-8,iNOS+和CD206+细胞的数量.
主要成果:
- 在AMI患者中,sRAGE水平升高,与IL-1,IL-6和IL-8负相关.
- 特定于心脏的sRAGE过度表达显著改善了心脏功能,并减少了I/R小鼠的心脏病发作的大小.
- sRAGE过度表达减少了M1巨细胞和增加了M2巨细胞,降低了IL-6水平.
结论:
- sRAGE 保护心脏免受肌肉心脏 I/R 损伤.
- sRAGE通过抑制促炎性M1-巨细胞透来发挥其保护作用.
- 减少IL-6分泌是sRAGE减轻I/R诱导心脏损伤的关键机制.
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