孕产妇抗体动力学和婴儿对印度登革热感染的敏感性
Shubham Shrivastava1, Amita Kasana1, Ruta Kulkarni1
1Department of Translational Virology, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India.
The American journal of tropical medicine and hygiene
|September 11, 2025
概括
婴儿的母体登革热抗体迅速下降,在6个月后显著减少. 婴儿在3个月大时就容易感染登革热,这会影响免疫接种时间.
科学领域:
- *传染病的流行病学和免疫学.
- * 儿科传染病和疫苗学.
背景情况:
- *登革热是全球主要的蚊子传播的病毒性疾病,特别影响印度的儿童.
- * 母亲抗体保护婴儿,但它们的水平随着时间的推移而下降,增加了易感性.
- *了解抗体动力学对于最佳登革热疫苗免疫时间至关重要.
研究的目的:
- * 调查印度婴儿中母体传输的登革热特异性IgG和中和抗体的衰变.
- *根据抗体水平评估婴儿对登革热感染的易感性.
- *为儿童群体的登革热疫苗免疫策略提供信息.
主要方法:
- *涉及602个婴儿血清样本的横截面研究,这些样本来自印度浦那的一家三级医院.
- *酶相关免疫吸收试验 (ELISA) 用于查抗登革热IgG和IgM抗体.
- *测量了针对四种登革热病毒 (DENV) 血清型的中和抗体标位.
主要成果:
- * 在带血样本中的71%存在登革热特异性IgG抗体,在6个月内下降至14%.
- *19%的3个月大的婴儿显示出登革热感染的证据 (IgM阳性).
- * 中和抗体几何平均标位在所有DENV血清型中显著下降9个月.
结论:
- * 印度婴儿在6个月大时,母亲的登革热抗体显著减少.
- *婴儿从3个月起表现出对登革热感染的敏感性.
- * 结果为确定儿童登革热疫苗接种的适当年龄提供了关键数据.
相关概念视频
Development of Immunocompetence
795
The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
795
Rh Blood Group
2.8K
The Rhesus (Rh) antigen is crucial in determining blood groups and ensuring compatibility during blood transfusions.
2.8K


