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自认白人和黑人个体的尿素反应的差异:一个生理临床试验

Naman S Shetty^1,2, Mokshad Gaonkar³, Nirav Patel³

¹Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA.

Nature communications

|February 13, 2025

概括

研究了天然尿素 (NP) 水平的种族差异. 运动增加了白人比黑人更多的N-终端亲B型NP (NT-proBNP),这表明运动对NP水平的影响在种族之间有所不同.

科学领域:

心血管生理学心血管生理学
基于种族的医学
生物标志物研究生物标志物研究

背景情况:

与白人相比,黑人个体表现出较低的基线血 natriuretic (NP) 度.
现有的研究尚未完全阐明NP对生理挑战的反应中的基于种族的变异.
了解这些差异对于准确解释不同人群中的NP水平至关重要.

研究的目的:

为了研究血NP度 (MR-proANP,NT-proBNP,BNP) 对标准化有氧运动和健康的黑人和白人成年人之间的metoprolol治疗的差异反应.
确定种族是否会影响因生理干扰引起的NP变化的大小.
为更好地了解跨种族群体的心血管生物标志物行为的贡献.

主要方法:

一项生理学试验 (NCT#03070184) 涉及80名健康成年人 (40名黑人,40名白人),年龄在18-40岁之间.
参与者接受了为期6周的干预,包括给予美托普罗罗尔和标准化有氧运动.
在干预之前和之后测量了中区域性心房NP (MR-proANP),N-终端型B型NP (NT-proBNP) 和BNP的血度.

主要成果:

运动和甲醇都增加了MR-proANP,NT-proBNP和BNP的血度.在两个种族群体中.
运动引起的MR-proANP和BNP的增加在黑人和白人参与者之间没有显著差异.
然而,与黑人参与者相比,运动导致白人参与者血NT-proBNP度显著增加 (pinteraction = 0.04).
所有测量的NP中metoprolol诱导的增加在两种种族群体中都是相似的.

结论:

该研究观察到运动诱导的NT-proBNP反应存在基于种族的差异,白人个体显示出更大的增加.
这些发现表明,像运动这样的生理刺激可以根据自我报告的种族引起差异性NP水平变化.
需要进一步的研究来探索NP水平中这些观察到的基于种族的生理差异的临床影响.

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