Vitamin D insufficiency in neonatal hypoxic-ischemic encephalopathy.

Vitamin D insufficiency in neonatal hypoxic-ischemic encephalopathy.
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DOI:
10.1038/pr.2017.13
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发表时间:
2017-07
期刊:
影响因子:
3.6
通讯作者:
Jenkins D
Jenkins D
中科院分区:
医学3区
文献类型:
--
作者:
Lowe DW;Hollis BW;Wagner CL;Bass T;Kaufman DA;Horgan MJ;Givelichian LM;Sankaran K;Yager JY;Katikaneni LD;Wiest D;Jenkins D

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维生素 D 具有神经保护和免疫调节特性,缺乏维生素 D 会导致中风结果恶化。关于缺氧缺血或低温治疗对缺氧缺血性脑病 (HIE) 新生儿维生素 D 状态的影响知之甚少。我们假设新生儿 HIE 中维生素 D 代谢失调,从而改变参与 Th17 激活的特定细胞因子,而低温可能会缓解这种情况。我们分析了一项多中心随机对照试验中血清样本中 25(OH) 和 1,25(OH)2 维生素 D、维生素 D 结合蛋白和与 Th17 功能相关的细胞因子之间的短期关系,该试验对 50 名中度至重度 HIE 婴儿进行 HIE 出生后 33°C 低温 48 小时与正常体温的比较。 70% 的婴儿出生后观察到 25(OH) 维生素 D 不足,无论采取何种治疗,在最初的 72 小时内会进一步下降。在所有 HIE 婴儿中,25(OH) 维生素 D 与抗炎细胞因子 IL-17E 呈正相关。然而,Th17 细胞因子抑制因子 IL-27 因体温过低而显着增加,否定了在常温 HIE 婴儿中观察到的 IL-27 与维生素 D 的相关性。大多数足月 HIE 新生儿存在血清 25(OH) 维生素 D 不足,这与循环抗炎 IL-17E 水平较低有关。低温不能缓解 HIE 中的维生素 D 缺乏症。
Vitamin D has neuroprotective and immunomodulatory properties, and deficiency is associated with worse stroke outcomes. Little is known about effects of hypoxia-ischemia or hypothermia treatment on vitamin D status in neonates with hypoxic-ischemic encephalopathy (HIE). We hypothesized vitamin D metabolism would be dysregulated in neonatal HIE altering specific cytokines involved in Th17 activation, which might be mitigated by hypothermia. We analyzed short term relationships between 25(OH) and 1,25(OH)2 vitamin D, vitamin D binding protein, and cytokines related to Th17 function in serum samples from a multicenter randomized controlled trial of hypothermia 33°C for 48h after HIE birth versus normothermia in 50 infants with moderate to severe HIE. Insufficiency of 25(OH) vitamin D was observed after birth in 70% of infants, with further decline over the first 72h, regardless of treatment. 25(OH) vitamin D positively correlated with antiinflammatory cytokine IL-17E in all HIE infants. However, Th17 cytokine suppressor IL-27 was significantly increased by hypothermia, negating the IL-27 correlation with vitamin D observed in normothermic HIE infants. Serum 25(OH) vitamin D insufficiency is present in the majority of term HIE neonates and is related to lower circulating anti-inflammatory IL-17E. Hypothermia does not mitigate vitamin D deficiency in HIE.
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