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Circ-Heart Fail:血浆N-乙酰神经氨酸水平升高对心力衰竭患者的预后价值

2021-11-05 MedSci原创 MedSci原创

该研究揭示了血浆N-乙酰神经氨酸水平升高与HF患者临床预后不良风险增加之间存在显著的相关性。该研究的数据支持去唾液酸化是导致HF进展重要因素的观点,神经氨酸酶抑制可能是HF的潜在治疗策略。

慢性心力衰竭(HF)是一种复杂的疾病,涉及多种病理生理机制,包括心肌细胞凋亡、炎症和改变的电信号,导致HF患者频繁住院和死亡。唾液酸化是一种常见的翻译后修饰形式,涉及将唾液酸分子添加到细胞表面或分泌蛋白上的N或O连接聚糖的末端。有研究表明心脏唾液酸化参与心脏的多种生理过程。改变的唾液酸化与心力衰竭(HF)小鼠相关。然而,其在心衰患者中的作用尚未明确,心脏唾液酸化调节的潜在作用值得深入探索。

近日,血管领域权威杂志Circ-Heart Fail上发表了一篇研究文章,研究人员首先评估了中位随访2年的HF患者血浆中N-乙酰神经氨酸水平与不良心血管事件发生率之间的关联。接下来,在心脏组织中进行了免疫印迹分析和凝集素组织化学检测,以明确神经氨酸酶的表达水平和心脏去唾液酸化的程度。最后,在HF动物模型中评估了神经氨酸酶抑制剂的治疗效果。

在1699名心衰患者中,464名(27%)患者死于心血管相关死亡或接受了心脏移植。研究人员发现血浆N-乙酰神经氨酸水平升高与较高的心血管死亡和心脏移植风险独立相关(调整后的三分位数风险比为2.11[95%CI为1.67-2.66],P<0.001)。

此外,在HF患者的心脏组织中,神经氨酸酶表达上调,并伴有去唾液酸化。在灌注异丙肾上腺素和血管紧张素II的HF小鼠中,接受神经氨酸酶抑制剂奥司他韦治疗可显著抑制去唾液酸化并改善心脏功能障碍。

由此可见,该研究揭示了血浆N-乙酰神经氨酸水平升高与HF患者临床预后不良风险增加之间存在显著的相关性。该研究的数据支持去唾液酸化是导致HF进展重要因素的观点,神经氨酸酶抑制可能是HF的潜在治疗策略。

原始出处:

Chenze Li,et al.Prognostic Value of Elevated Levels of Plasma N-Acetylneuraminic Acid in Patients With Heart Failure.Circulation:heart failure.2021.https://www.ahajournals.org/doi/10.1161/CIRCHEARTFAILURE.121.008459

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    2021-11-07 zhaojie88
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    2021-11-07 slcumt
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    2021-11-05 医鸣惊人

    认真学习了。

    0

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