JAHA:钠摄入量与粒细胞、肾脏和心血管结局的关系

2022-06-25 MedSci原创 MedSci原创

钠摄入量与循环粒细胞浓度呈正相关,粒细胞浓度越高,长期心血管和肾脏结局越差。

高钠摄入量与不良结局相关,包括高血压、心血管疾病、肾脏疾病和全因死亡率。潜在的因果机制可能是多因素的,除了对细胞外液容量的影响外,还涉及神经、激素和氧化应激相关的途径。实验研究表明,高钠摄入量会影响先天免疫系统,其中包括增加循环粒细胞。这种关系是否存在于人群水平上,是否与疾病结局有关,目前尚不明确。

近日,心血管疾病领域权威杂志JAHA上发表了一篇研究文章,研究人员的目的是评估以下假设:(1)在人群水平上,钠摄入量与粒细胞有关;(2)粒细胞与高血压以及心血管和肾脏预后相关;(3)高钠摄入量与这些结局之间的关系是由粒细胞所介导的。

研究人员对来自诺福克前瞻性欧洲癌症前瞻性调查(EPIC)队列的13804名参与者进行了分析,他们的平均年龄为58岁,平均随访时间为19.3年。根据基线钠摄入量和钠-钾比值进行分析。该研究的主要结局为基线高血压,以及随访期间心血管(死亡率或心血管事件)和肾脏(死亡率或肾脏事件)的综合结局。

调整混杂因素后,钠摄入量和尿液钠钾比与循环粒细胞浓度呈正相关(β=0.03;P=0.028,β=0.06;分别为P<0.001)。粒细胞分别显著介导了钠摄入量和尿钠钾比与基线高血压、心血管和肾脏结局之间的关系。

由此可见,钠摄入量与循环粒细胞浓度呈正相关,粒细胞浓度越高,长期心血管和肾脏结局越差。考虑到最近证实的钠在免疫调节中的作用以及免疫细胞在心血管和肾脏疾病中的作用,这一途径的因果关系可能需要在进一步的研究中加以考虑。

原始出处:

Eliane F. E. Wenstedt.et al.Relationship of Sodium Intake With Granulocytes, Renal and Cardiovascular Outcomes in the Prospective EPIC‐Norfolk Cohort.JAHA.2022.https://www.ahajournals.org/doi/full/10.1161/JAHA.121.023727

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    2022-08-10 lmm397
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    2022-06-26 zhwj

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