对DENV的低预先存在的抗NS1幽默免疫与妊娠期ZIKV暴露后的小头发育有关
Sebastián Castro-Trujillo1, William R Mejía2,3, Katherine Segura1,4
1División de Inmunología, Programa de Medicina, Facultad de Ciencias de la Salud, Universidad Surcolombiana, Neiva, Huila, Colombia.
PLoS neglected tropical diseases
|January 6, 2025
概括
针对登革热病毒 (DENV) 的母体抗体NS1可以保护婴儿免受与寨卡病毒 (ZIKV) 相关的小头症. 在母亲体内先前存在的DENV IgG-NS1抗体显示出与先天性寨卡综合征 (CZS) 的保护性关联.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 孕产妇和胎儿的健康状况
背景情况:
- 妊娠期寨卡病毒 (ZIKV) 感染导致先天性寨卡综合征 (CZS),包括小头症.
- ZIKV和登革热病毒 (DENV) 在CZS中NS1特异性免疫的作用尚不清楚.
- 大多数风险种群居住在DENV流行地区.
研究的目的:
- 调查ZIKV NS1特异性幽默免疫和CZS之间的关联.
- 确定先前存在的DENV NS1特异性免疫在CZS发展中的作用.
- 分析母体DENV IgG-NS1抗体对小头症风险的影响.
主要方法:
- 在哥伦比亚 (2015-2016年) 研究了328名怀孕期间感染ZIKV的母亲和儿童.
- 进行临床评估和儿科神经学随访.
- 在母亲和儿童中评估ZIKV和DENV NS1特异性IgM和IgG抗体水平.
主要成果:
- 母亲的DENV和ZIKVIgG-NS1抗体被转移到婴儿身上,持续时间取决于母亲的水平.
- 预先存在的DENV IgG-NS1抗体度较高与小头症风险降低有关.
- 婴儿IgM-NS1反应是长期的,与不良结果的轻微关联.
结论:
- 低水平的胎盘转移,先前存在的DENV IgG-NS1抗体与ZIKV暴露的婴儿的小头症有关.
- 抗NS1 IgG抗体可以在怀孕期间提供对ZIKV感染的保护.
- 在高风险人群中,NS1为orthoflavivirus疫苗的潜在目标.
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