细胞通信网络蛋白2 在肺动脉高血压的右心室
Carly E Byrd1, Jennifer E Schramm2, Jun Yang3
1Department of Pediatrics, Division of Neonatal-Perinatal Medicine Johns Hopkins University Baltimore Maryland USA.
细胞通信网络2 (CCN2) 在肺动脉高血压 (PAH) 中升高,并与更糟糕的结果和右心室 (RV) 功能障碍有关. 这种蛋白质可能会导致PAH的进展和RV的不适应.
科学领域:
- 心血管生物学 心血管生物学
- 肺高血压研究 肺高血压研究
- 生物标志物发现发现
背景情况:
- 细胞通信网络2 (CCN2) 是一种与心血管疾病有关的分泌蛋白质.
- 它在肺动脉高血压 (PAH) 严重程度,结果和右心室 (RV) 功能中的作用在大型队列中仍未得到充分研究.
- 了解CCN2对PAH病原性的贡献,对于确定新的治疗点至关重要.
研究的目的:
- 为了研究血清中CCN2水平与PAH严重程度之间的关联,血液动力学测量和大量人类队列的生存结果.
- 用先进的成像和血液动力学评估来评估CCN2和RV结构和功能之间的关系.
- 探索CCN2在临床前PAH模型中的作用,检查其与疾病进展和VR病理学的相关性.
主要方法:
- 血清中CCN2水平在2548名成人PAH患者和216名对照人群中得到量化.
- 分析了CCN2水平和临床参数 (6MWD,血液动力学,存活率) 之间的关联.
- 在一组患者中,通过压力-体积循环和心脏MRI来评估RV形态和功能.
- 一个临床前PAH模型被用于测量与疾病进展和VR组织学变化相关的CCN2的血和mRNA水平.
主要成果:
- 与对照组相比,PAH患者的血清CCN2水平显著更高 (p < 0.0001).
- 升高的CCN2与减少VR收缩性相关 (p = 0.003),较差的6分钟步行距离 (6MWD) (p = 0.035),以及死亡或移植风险增加 (p = 0.025).
- 在临床前模型中,CCN2水平随着PAH进展而增加,并与RV毛细血管稀疏和纤维化有关.
结论:
- CCN2是PAH严重程度和不良结果的潜在生物标志物.
- 这些发现表明,CCN2在肺动脉高血压中对右心室的不适应起作用.
- 需要进一步的研究来阐明CCN2在PAH病原和RV功能障碍中的精确机制.
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