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Association of Toll-like receptor 4 polymorphism with age-dependent systolic blood pressure increase in patients with coronary artery disease

机译:Toll样受体4多态性与年龄依赖性收缩压升高在冠心病患者中的关联

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Background Systolic blood pressure (SBP) increases steadily with age and bears an independent continuous relationship with the incidence of cardiovascular events. Low-grade inflammation is a suspected pathomechanism causing vascular aging and promote coronary artery disease (CAD). Recent animal studies give evidence that Toll-like receptor 4 (TLR4) modulate inflammation and contribute to age-dependent SBP increase. However, there are no data about TLR4 and age-dependent blood pressure increase in human. Methods and results We therefor investigate a human cohort of 2679 patients with CAD aged between 50–80 years. Genotypes were determined for the TLR4 single nucleotide polymorphism rs4986790 (TLR4 896A/G). Patients were stratified according to tertiles of age and the upper tertile was compared to lower tertiles. In this cohort we show that older patients with the TLR4 896 G allele had significantly lower SBP (TLR4 G allele carriers: 148.2?±?30.4 mmHg versus A/A allele carrier: 154.9?±?27.2 mmHg; P?
机译:背景收缩压(SBP)随着年龄的增长而稳定增长,并且与心血管事件的发生率具有独立的连续关系。低度炎症是引起血管衰老并促进冠状动脉疾病(CAD)的怀疑机制。最近的动物研究提供了证据,表明Toll样受体4(TLR4)调节炎症并导致年龄依赖性SBP升高。然而,没有关于TLR4和人类年龄依赖性血压升高的数据。方法和结果为此,我们调查了2679名年龄在50-80岁之间的CAD患者。确定了TLR4单核苷酸多态性rs4986790(TLR4 896A / G)的基因型。根据年龄的三分位数对患者进行分层,将高三分位数与低三分位数进行比较。在该队列中,我们显示了具有TLR4 896 G等位基因的老年患者的SBP显着降低(TLR4 G等位基因携带者:148.2±±30.4 mmHg,而A / A等位基因携带者:154.9±±27.2 mmHg; P 0.05)与TLR4 896A / A等位基因载体相比,脉压较低(TLR4 G等位基因载体:69.1±±29.7 mmHg,而A / A等位基因载体:75.5±±26.4 mmHg; P <0.05)。结论我们证明了冠状动脉疾病患者的TLR4 SNP rs4986790基因型与年龄依赖性血压升高之间存在关联。

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