Hypertension:钠摄入减少可增加未经治疗高血压患者的循环短链脂肪酸

2020-06-02 MedSci原创 MedSci原创

该研究的结果表明饮食中钠摄入的减少会增加循环中的SCFA,这些结果支持饮食中的钠摄入可能会影响人体肠道微生物组。

高钠饮食可能会调节肠道微生物组。鉴于循环中的短链脂肪酸(SCFA)来源于肠道微生物,近日,心血管权威杂志Hypertension上发表了一篇研究文章,研究人员旨在检验以下假设:适度的减少钠摄入会改变未经治疗的高血压患者循环中SCFA浓度,并且这种变化与血压降低和心血管表型改善有关。

这项随机、双盲、安慰剂对照的采用慢速钠或安慰剂片剂降盐的交叉试验共纳入了145名参与者(42%的黑人,19%的亚裔和34%的女性),慢速钠或安慰剂片剂治疗各6周。在配对的血清样本中进行有针对性的循环SCFA分析,并在每个周期结束时收集这些样本,作为所有结局指标。

减少钠摄入增加了所有8种SCFA,其中2-甲基丁酸、丁酸、己酸、异丁酸和戊酸的增加具有统计学意义(Ps<0.05)。此外,SCFA增加与血压降低和动脉顺应性改善有关。钠减少对SCFAs的影响有显著的性别差异(Ps<0.05)。按性别分层时,丁酸、己酸、异丁酸、异戊酸和戊酸的增加仅在女性中显著(Ps<0.05),而在男性中不显著(Ps>0.05)。在女性中,异丁酸酯、异戊酸酯和2-甲基丁酸酯的变化与血压降低呈负相关(Ps<0.05)。戊酸含量增加与颈股脉搏波速度降低有关(P=0.040)。

该研究的结果表明饮食中钠摄入的减少会增加循环中的SCFA,这些结果支持饮食中的钠摄入可能会影响人体肠道微生物组。SCFA对钠减少的反应存在性别差异。此外,SCFA增加与血压降低和动脉顺应性改善有关。

原始出处:

Li Chen.et al.Modest Sodium Reduction Increases Circulating Short-Chain Fatty Acids in Untreated Hypertensives A Randomized, Double-Blind, Placebo-Controlled Trial.Hypertension.2020.https://www.ahajournals.org/doi/10.1161/HYPERTENSIONAHA.120.14800

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