免疫球蛋白A度在母乳和婴儿便中较低,在患有死角性肠球炎的婴儿中较低
Claire L Granger1,2, Andrea C Masi3, Christopher A Lamb3,4
1Neonatal Intensive Care Unit, Royal Victoria Infirmary, Newcastle-upon-Tyne Hospitals (NuTH) NHS Trust, Newcastle, UK. claire.granger@nhs.net.
Pediatric research
|December 3, 2025
概括
患有死角性肠球炎 (NEC) 的婴儿在生命的前三周内在母乳 (MOM) 和便中具有较低的免疫球蛋白A (IgA) 和分泌IgA (sIgA) 水平. 这表明IgA在NEC预防中的潜在作用.
科学领域:
- 新生儿免疫学 新生儿免疫学
- 胃肠道的健康状况
- 微生物组与宿主之间的相互作用
背景情况:
- 死性肠球炎 (NEC) 是一种严重的疾病,会影响早产婴儿.
- 结合免疫球蛋白A (IgA) 的肠道细菌可能会影响NEC的发展.
- 在母乳 (MOM) 和婴儿便中研究IgA对于理解NEC至关重要.
研究的目的:
- 探索MOM和婴儿便中的IgA和分泌IgA (sIgA) 的度.
- 为了比较开发NEC和没有开发NEC的早产婴儿之间的IgA水平.
- 为了确定NEC风险的潜在早期生物标志物.
主要方法:
- 使用酶相关免疫吸收试验 (ELISA) 量化IgA和sIgA.
- 分析了202个MOM和92个便样本,来自41个NEC和44个对照婴儿 (妊娠32周以下).
- 从早产婴儿收集的样本,有些是在疾病发作之前收集的.
主要成果:
- 与对照组相比,在患有NEC的婴儿中,MOM中的IgA和SIgA度显著降低 (调整后p<0.001).
- 在疾病发作之前在NEC婴儿中观察到的较低的便IgA度 (p = 0.045).
- 便分泌IgA (sIgA) 在两组之间没有显著差异.
结论:
- 早期的MOM和婴儿便显示,在婴儿中IgA和SIgA水平降低,这些婴儿后来发展为NEC.
- 较低的IgA可能表明早产婴儿的NEC风险增加.
- 针对性地使用高IgA的供母乳和最大限度地增加新鲜的MOM分娩是预防NEC的潜在策略.
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