Eur J Heart Fail:循环二肽基肽酶3是一种心肌抑制因子

2019-09-02 xing.T MedSci原创

由此可见,该研究表明cDPP3是一种新发现的心肌抑制因子,入院时的水平与严重HF患者的死亡率相关。此外,Procizumab对cDPP3的抑制可改善HF小鼠的血液动力学指标。该研究结果表明,DPP3可能是严重HF的新生物标志和生物靶标。

急性心力衰竭是一种高死亡率疾病,其病理生理学机制尚未完全明确。二肽基肽酶3(DPP3)是参与血管紧张素II和脑啡肽裂解的细胞溶质酶。最近,心血管领域权威杂志European Journal of Heart Failure上发表了一篇研究文章,该研究的目的是探究循环DPP3(cDPP3)水平与心源性休克患者死亡率之间的关系,并确定高cDPP3对小鼠心力衰竭(HF)模型器官功能的影响。

研究人员测量了174名心源性休克患者的cDPP3,并且发现高cDPP3水平与短期死亡风险(标准化风险比:1.4(1.1-1.8))和严重器官功能障碍相关。此外,入院后24小时内心源性休克患者cDPP3的快速下降与有利结局相关。

该研究动物实验结果显示,在健康小鼠中注射DPP3诱导心肌抑制(缩短分数-10±2%)和肾血流动力学受损(肾阻力指数+0.30±0.02)。急性心力衰竭小鼠用Procizumab(一种针对cDPP3的特异性抗体)抑制cDPP3可迅速使心脏功能和肾血流动力学指标正常化,氧化应激和炎症信号通路明显减弱。

由此可见,该研究表明cDPP3是一种新发现的心肌抑制因子,入院时的水平与严重HF患者的死亡率相关。此外,Procizumab对cDPP3的抑制可改善HF小鼠的血液动力学指标。该研究结果表明,DPP3可能是严重HF的新生物标志和生物靶标。
 
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    2019-09-04 zhaojie88
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