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JCEM:重症患者的高热量暴露会加速甲状腺激素的活化

2019-10-05 xing.T MedSci原创

由此可见,NTIS患者较高的热量暴露会暂时减缓血浆T3/rT3比值的下降,接下来3天较高的热量暴露会使这种作用最小化并最终消失。

严重疾病的炎症反应伴有非甲状腺疾病综合症(NTIS)。有研究证实进食可减轻这一过程,但尚未对重症患者随时间进行前瞻性研究。近日,内分泌和代谢性疾病领域权威杂志Journal of Clinical Endocrinology & Metabolism上发表了一篇研究文章,该研究探讨重症患者随时间变化的卡路里摄入量对NTIS的影响。


机械通气的全身性炎症反应综合征(SIRS)患者随机接受其估计热量需求的100%或40%(分别为100%ECN和40%ECN)。每天测量甲状腺激素,持续7天,或直到重症监护病房患者出院或死亡。研究人员采用混合水平回归模型探究了随机分组对血浆T3/rT3比率以及T3、rT3、T4和TSH的影响。


有35名参与者(100%ECN中的19名,40%ECN中的16名)被纳入研究。调整基线T3/rT3比值的组间差异后,定义拟合曲线的参数(截距、研究日的线性效应和研究日的二次效应)因随机分组而有所不同(分别为p=0.001、p=0.01和p=0.02)。拟合曲线图显示,干预后第1天与40%ECN组相比,干预后第1天100%ECN组的参与者的T3/rT3比值高出54%,随着时间的推移,差异有所减弱。这是由于干预后1天血浆T3升高23%,血浆rT3降低10%。


由此可见,NTIS患者较高的热量暴露会暂时减缓血浆T3/rT3比值的下降,接下来3天较高的热量暴露会使这种作用最小化并最终消失。 


原始出处:


Liam McKeever,et al.Higher caloric exposure in critically ill patients transiently accelerates thyroid hormone activation.J Clin Endocrinol Metab. 2019.https://doi.org/10.1210/clinem/dgz077


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    2020-03-09 achengzhao
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    2020-05-18 smallant2015
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