J Hypertens:中心收缩压与非必需氨基酸代谢组学的关系

2019-03-02 xing.T 网络

由此可见,这些氨基酸在胶原代谢、葡萄糖代谢和氧化应激中发挥关键作用,这种人种特异性发现表明非必需氨基酸的生物合成可能被上调,以保护脉管系统免受早期血管恶化的影响。

早期暴露于血管危险因素可能表现为早期血管老化,这是一种黑人群体更容易发生的现象。代谢组提供了对当前状态和生理过程调节的机会,并用于研究动脉硬度的早期分子决定因素。

近日,高血压领域权威杂志Journal of Hypertension上发表了一篇研究文章,研究人员纳入了不同动脉僵硬程度的黑人(n=80)和白人(n=80)男性和女性(年龄20-30岁,临床血压<140和90mmHg),并测量了受试者颈动脉-股动脉脉搏波速度、中心SBP(cSBP)和中心脉压(cPP)。研究人员通过核磁共振波谱、液相色谱串联质谱和气相色谱-飞行时间-质谱法得到了代谢组学数据。

研究人员发现黑人和白人之间有34种代谢物存在差异(d≥0.3)(根据多重比较进行调整)。只有cSBP在黑人中更高(P=0.003)。饮食中蛋白质摄入量较低(P<0.001),但黑人尿液中非必需氨基酸水平较高(q≤0.05)。在多变量调整的回归模型中,cSBP和cPP与各种非必需氨基酸呈负相关,但仅限于黑人成年人。这些包括cSBP与4-羟脯氨酸(β=-0.24; P=0.042)、丙氨酸(β=-0.29; P=0.015)、谷氨酰胺(β=-0.25; P=0.028)、甘氨酸(β=- 0.26; P=0.027)、组氨酸(β=-0.30; P=0.009)、丝氨酸(β=-0.29; P=0.012)的相关性,以及cPP与丙氨酸(β=-0.31; P=0.005)和丝氨酸( β=-0.26; P=0.019)之间的相关性。

由此可见,这些氨基酸在胶原代谢、葡萄糖代谢和氧化应激中发挥关键作用,这种人种特异性发现表明非必需氨基酸的生物合成可能被上调,以保护脉管系统免受早期血管恶化的影响。

原始出处:


Mels, Catharina M.et al.Central systolic pressure and a nonessential amino acid metabolomics profile the African Prospective study on the Early Detection and Identification of Cardiovascular disease and Hypertension. Journal of Hypertension. 2019.https://journals.lww.com/jhypertension/Abstract/publishahead/Central_systolic_pressure_and_a_nonessential_amino.97254.aspx

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    2019-12-20 feather89
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    2019-03-02 明天jing

    代谢组学是热点,它反映疾病的终极状态,通过代谢组学可以反向知道生命体的活动特点,只是目前代谢组成分太复杂,背后的机制仍然不完全清楚而已。

    0

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