在Rituximab治疗后,SARS-CoV-2幽默性免疫力持续存在
Liangjian Lu1, Chang Yien Chan1,2, Yi Yang Lim1
1Department of Paediatrics, Khoo Teck Puat - National University Children's Medical Institute, National University Health System, Singapore 119228, Singapore.
Vaccines
|December 23, 2023
概括
长寿的血细胞有助于SARS-CoV-2的幽默免疫力. 利图西马布治疗降低了抗体水平,但没有消除它们,这表明接种疫苗的患者具有持续的免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 长期的幽默免疫依赖于短寿命和长寿命的血细胞.
- 这些血细胞在SARS-CoV-2免疫力中的作用,特别是在接种疫苗后和B细胞消耗疗法期间,仍然不清楚.
- 了解这些贡献对于确定疫苗接种策略至关重要,包括强剂量.
研究的目的:
- 研究B细胞消耗疗法Rituximab对接种疫苗的患者抗SARS-CoV-2抗体标位的影响.
- 在儿童发病性综合征的个体中,在Rituximab治疗后,对幽默免疫的持久性进行表征.
主要方法:
- 招募了接受Rituximab的10名儿童发病性综合征的完全接种疫苗的患者.
- 在Rituximab治疗前和大约6个月后测量了抗SARS-CoV-2尖峰 (S) 和核囊 (N) 蛋白抗体.
- 使用罗氏Elecys®抗SARS-CoV-2 (S) 试验进行抗体量化.
主要成果:
- 在Rituximab之前,所有患者都有可检测的抗S抗体;60%超过了检测的上限.
- 在Rituximab后,抗S抗体标位下降 (p=0.043),但所有患者仍然呈阳性,其中50%仍在上限以上.
- 反N抗体阳性从60%降至30% (p=0.036),表明对抗体反应的差异性影响.
结论:
- 针对SARS-CoV-2的幽默免疫包括长寿的血细胞,这是Rituximab后持续存在的抗S抗体水平所证明的.
- 利图西马布治疗导致抗SARS-CoV-2抗体标位的减少,但不能完全取消.
- 这些发现对了解免疫受损人群的疫苗有效性和潜在的再接种需求有影响.
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