胎儿甲基荷兰胺与新生儿低血糖症的关联
Henrike Hoermann1, Martijn van Faassen2, Marcia Roeper1
1Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany.
JAMA pediatrics
|April 1, 2024
概括
患低血糖风险的新生儿在带血液中含有较高水平的甲基胺和甲基氨酸. 这些升高的水平与产后低血糖发作增加和血糖降低相关,这表明胎儿压力和新生儿低血糖之间存在联系.
科学领域:
- 新生儿医学 新生儿医学
- 内分泌学 在内分泌学.
- 产周研究 产周研究
背景情况:
- 周产期压力和胎儿生长限制是新生儿低血糖症的已知危险因素.
- 将这些情况与低血糖症联系在一起的确切机制尚不清楚.
- 之前在绵羊模型上的研究表明,catecholamines在抑制胎儿胰岛素分泌方面起着作用.
研究的目的:
- 为了调查新生儿是否有低血糖的危险因素在带血 (UCB) 和羊水 (AF) 中呈现高度的甲醇胺.
- 确定这些甲基荷胺水平与风险新生儿的产后血糖之间的相关性.
- 探索儿科胺,胎儿胰岛素分泌 (用C-表示) 和新生儿低血糖的发病率/严重程度之间的关系.
主要方法:
- 一项前性队列研究,涉及328名新生儿在第三级围产中心.
- 在分娩期间和分娩后立即采集羊水 (AF) 和带血 (UCB) 样本.
- 使用液态染色学与双重质谱学分析甲基胺和甲基氨酸.
- 甲醇胺度与产后血糖 (BG) 查和C-水平的相关性.
主要成果:
- 与对照组相比,生长受限制的新生儿显示出与对照组相比,上腺素,甲上腺素和3-甲西胺的UCB度显著更高.
- 经历围产期压力的新生儿也有升高的UCB norepinephrine,normetanephrine和3-methoxytyramine.
- 在UCB中,catecholamine和metanephrine水平与AF C-度有负相关性.
- 升高的UCB上腺素,甲上腺素和3-甲西胺与低血糖事件的数量正相关,与最低测量BG度负相关.
结论:
- 患低血糖风险的新生儿在UCB中显示了catecholamine和metanephrine度的增加.
- 这些升高的水平与更频繁和严重的产后低血糖发作和较低的血糖水平有关.
- 这些发现支持了假设,受围产期压力或生长限制影响的胎儿甲基可胺暴露会影响新生儿β细胞功能,可能导致高胰岛素性低血糖症.
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