Hypertension:母亲妊娠期间暴露于双酚A会对儿童血压有影响吗?

2016-12-06 haofan MedSci原创

母亲妊娠期间暴露于双酚A与儿童较高的舒张压存在相关性,而且这种相关性需要在孕妇尿中双酚A浓度超出某一阈值(4.5μg/g肌酐)才存在。

双酚A已被报道与不良的健康效应相关,这些不良的健康效应其中就包括高血压。同时也有研究人员怀疑妊娠时双酚A能够穿透胎盘,从而有可能影响胎儿健康。近日,心血管权威杂志Hypertension上发表一篇来自韩国檀国大学医学院预防医学系的Sanghyuk Bae教授及其研究团队的文章,旨在探讨产前暴露于双酚A对儿童4岁时血压的影响。 

研究人员随访了645名年龄为4岁的儿童,他们在母亲于20088月至20117月期间在妊娠中期参加了一个出生队列研究。由于双酚A和血压之间呈现非线性关联,研究人员构建了一个分段线性回归模型来评估母亲在妊娠20周左右尿中双酚A的浓度和4岁儿童血压之间的相关性,以此来确定相关性的双酚A阈值。 

研究人员发现4岁儿童的舒张压与在妊娠20周左右的孕妇尿中超过阈值以上的双酚A浓度之间存在正相关性。对潜在的混杂因素进行调整后,研究人员发现孕妇产前尿中双酚A浓度每增加一个对数单位,4岁儿童舒张压将增加7.9mmHgSE=2.072P=0.0001),而脉压差则降低了8mmHgSE=2.528P=0.0015)。然而,进一步研究发现4岁儿童的收缩压与孕妇产前尿中双酚A的浓度并不存在显著相关性。 

上述研究结果表明,母亲妊娠期间暴露于双酚A与儿童较高的舒张压存在相关性,而且这种相关性需要在孕妇尿中双酚A浓度超出某一阈值(4.5μg/g肌酐)才存在。 

原始出处: 

Sanghyuk Bae, et al. Maternal Urinary Bisphenol A Concentration During Midterm Pregnancy and Children’s Blood Pressure at Age 4. Hypertension. December 5, 2016. 

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    2016-12-08 wjcjjian
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    2017-01-21 feather89

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