JAHA:生长分化因子15在射血分数保留的心衰患者中的特征

2022-07-14 MedSci原创 MedSci原创

在射血分数保留的心力衰竭患者中,循环中生长分化因子15水平不受吡非尼酮治疗的影响,似乎不受心肌纤维化的影响。

生长分化因子15是转化生长因子β(TGF-β)细胞因子超家族的成员,在大多数人体组织中低水平表达。心肌细胞中生长分化因子-15的表达是由缺血、机械应变、促炎细胞因子、氧化应激和神经激素激活等损伤触发的,尽管其作用尚不清楚。生长分化因子15在射血分数保留的心力衰竭中升高,并与不良结局相关,但其与心肌纤维化和其他特征的关系尚不清楚。

近日,心血管疾病领域权威杂志JAHA上发表了一篇研究文章,研究人员试图评估吡非尼酮(一种新型抗纤维化药物)对射血分数保留的心力衰竭患者生长分化因子15的影响,并确定与生长分化因子15相关的特征以及1年内其水平的变化情况。

在吡非尼酮治疗射血分数保留的心衰(PIROUETTE)试验纳入的患者(n=107)中,他们随机(n=94)接受吡非尼酮或安慰剂(n=94)治疗。研究人员在基线和预先设定的时间点测量了受试者生长分化因子15水平,并评估了GDF‐15对吡非尼酮的反应以及与基线患者特征的相关性。在52周的试验期间,吡非尼酮在任何时间点对循环中生长分化因子15无影响。

在多变量分析中,男性、糖尿病、较高的N末端前B型利钠肽循环水平、较低的肾功能以及较短的基线6分钟步行测试距离与基线生长分化因子15对数值相关。基线整体纵向应变受损是52周内GDF‐15增加的最强预测因子。

由此可见,在射血分数保留的心力衰竭患者中,循环中生长分化因子15水平不受吡非尼酮治疗的影响,似乎不受心肌纤维化的影响。循环生长分化因子15与一系列重要心衰特征相关,可能是整体生理紊乱的标志。

原始出处:

Gavin A. Lewis.et al.Characteristics Associated With Growth Differentiation Factor 15 in Heart Failure With Preserved Ejection Fraction and the Impact of Pirfenidone.JAHA.2022.https://www.ahajournals.org/doi/full/10.1161/JAHA.121.024668

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    2022-07-15 zhaohui6731
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在病因分类的研究中,7名自发性ICH患者中有1名患者的病因仍然未知或不明;在未使用病因分类的研究中,4名自发性ICH患者中有1名病因未明。尽管ICH体积相对较小,但病因不明ICH患者的短期死亡率很高。

Eur Heart J:早期心脏转甲状腺素淀粉样变的特征和自然病程

I期的ATTR-CM患者可根据诊断时NT-proBNP浓度和利尿剂需求进一步进行分层。尽管短期和中期生存率良好,但Ia期ATTR-CM患者心血管疾病发病率显著升高。

JAHA:急性心肌梗塞患者发生早期复发性心肌梗塞的特征和结局

早期RMI是一种危及生命的疾病,5年内死亡率接近50%。支架相关事件和冠状动脉疾病进展是大多数早期RMI的原因。药物依从性、积极的危险因素管理和治疗过渡应该是预防早期RMI的基石。

Eur Heart J:多发瓣膜性心脏病患者的特征、治疗和结局

多发性VHD较为常见,近30%的患者为左侧VHD,并与更大程度的心脏损伤相关;在6个月时,与单一VHD患者相比,多发性VHD患者出现了更高的死亡率和更多的心力衰竭病例,但手术率较低。