Heart:低水平褪黑激素可能导致心肌梗死

2016-11-12 xing.T MedSci原创

低水平褪黑激素的分泌与体重指数增加的女性心肌梗死风险增加显著相关。褪黑激素可能是体重指数增加的妇女发生心肌梗死的一项新的、可改变的危险因素。

夜间褪黑激素的分泌减少与心血管危险因素、糖尿病和高血压等存在相关性,而且常见心血管疾病患者夜间褪黑激素水平较低。然而,褪黑激素分泌与心肌梗死之间是否存在潜在的关系,尚未有研究报道。近日,在心脏病领域权威杂志Heart上发表了一篇来自美国波士顿内科布莱根妇女医院肾内科的Ciaran J McMullan医生及其团队的研究文章,旨在明确褪黑激素的分泌与发生心肌梗死的风险之间的关系。

研究人员进行了一项前瞻性的嵌套病例对照研究,参与者来自于护士健康研究的I和II队列。共有209例发生致命性和非致命性心肌梗死的患者,同时匹配209例正常对照者,研究人员在研究之初收集了所有研究对象的晨尿标本。夜间褪黑激素的分泌通过测量晨尿中尿肌酐进行标准化后的6-羟基硫酸褪黑素的浓度来进行评估。研究人员采用多因素条件Logistic回归分析来分析重要危险因素的独立相关性。

研究者发现低水平的褪黑激素分泌与较高风险的心肌梗死之间存在显着的相关性。对匹配变量进行调整后,研究者发现经对数转换的6-羟基硫酸褪黑素与尿肌酐比值每降低一个单位,比值比为1.51(95%可信区间为1.16-1.96)。在控制美国心脏协会心血管风险评分以及昼夜因素的多变量模型中,研究人员发现6-羟基硫酸褪黑素与尿肌酐比值每降低一个单位,心肌梗死风险显著增加(比值比为1.40;95%可信区间为1.02-1.93)。相比于最低褪黑激素分泌水平的妇女发生心肌梗死估计的绝对风险为每10,000人每年有197例心肌梗死患者,最高褪黑激素分泌水平的妇女发生心肌梗死估计的绝对风险为每10,000人每年只有84例心肌梗死患者。这种相关性受体重指数影响较大(P相互作用=0.02)。

由此可见,低水平褪黑激素的分泌与体重指数增加的女性心肌梗死风险增加显著相关。褪黑激素可能是体重指数增加的妇女发生心肌梗死的一项新的、可改变的危险因素。

原始出处:


Ciaran J McMullan,et al. A nested case–control study of the association between melatonin secretion and incident myocardial infarction. Heart. 2016. doi:10.1136/heartjnl-2016-310098

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    2016-11-16 1e0ece0dm09(暂无匿称)

    谢谢谢谢分享

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    2016-11-14 zhaojie88
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    2016-11-14 slcumt
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    2016-11-13 wxl882001

    新的资料,值得学习

    0

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