在患有渐进式多焦点白血脑病的患者中,频繁检测IFN-gamma产生记忆效应细胞和T效应细胞
Marie-Ghislaine de Goër de Herve1, Manon Dekeyser1, Houria Hendel-Chavez1
1INSERM 1186, Institut Gustave Roussy, Université Paris-Saclay, Villejuif, France.
Frontiers in immunology
|August 1, 2024
概括
一种新的干扰素释定量 (IGRA) 检测到JC病毒 (JCV) 特定的T细胞. 这种测试显示出对渐进性多焦点白血脑病 (PML) 的高灵敏度和特异性,并可能有助于识别有风险的患者.
科学领域:
- 神经免疫学 神经免疫学
- 病毒学 病毒学
- 免疫诊断 免疫诊断 免疫诊断 免疫诊断
背景情况:
- 渐进性多焦点白内障 (PML) 是一种罕见的,致命的脱髓化疾病,由中枢神经系统中JC病毒 (JCV) 复制引起.
- PML主要影响严重免疫缺陷的个体,如艾滋病和血液恶性瘤.
- 在接受强效免疫抑制生物药物 (如多发性硬化症纳塔利祖马布) 的患者中出现PML,突显了风险分层的必要性.
研究的目的:
- 开发和验证一种干扰素 (IFN-γ) 释放试验 (IGRA),用于检测特定于JC病毒 (JCV) 的T细胞反应.
- 评估本IGRA在识别活跃PML患者和风险增加患者中的有用性.
主要方法:
- 开发一种IGRA,旨在检测JCV特异性T细胞和T细胞在周围血液中的特异性T细胞.
- 在已确认PML的患者和健康捐赠者中评估测定灵敏度和特异性.
- 随着时间的推移,对接受纳塔利祖马布治疗的多发性硬化症患者的测试阳性率的评估.
主要成果:
- 开发的IGRA在各种免疫抑制病因的活跃PML患者中表现出高灵敏度 (84%).
- 该试验具有很高的特异性 (97%),只有3%的健康捐赠者呈阳性检测.
- 在多发性硬化症患者中,随着纳塔利祖马布治疗持续时间的延长,测试阳性增加,在治疗超过48个月的患者中达到36%,与更高的PML风险相关.
结论:
- 特定于JCV的IGRA是一种敏感和特定的工具,用于检测PML患者的T细胞反应.
- 在PML风险较高的患者中测试的阳性性增加表明其在这种破坏性机会性感染的风险分层中的潜在实用性.
- 这种诊断方法可以帮助管理免疫抑制疗法患者,通过确定可以从更密切的监测或替代治疗策略中受益的个体.
关键词:
艾滋病 艾滋病 艾滋病是什么?IFN-γ释放试验试验方法这就是JC病毒.效应细胞T细胞的效应细胞.效应器记忆T细胞是T细胞.多发性硬化症多发性硬化症在那个时候,她生下了Natalizumab.渐进的多焦点白细胞脑病变.更多相关视频
09:11Imaging of In Situ Interferon Gamma Production in the Mouse Spleen following Listeria monocytogenes Infection
Published on: July 16, 2019
9.1K
09:37Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique
Published on: September 23, 2022
1.9K
相关概念视频
Cell-mediated Immune Responses
65.0K
Overview
65.0K
Cells of the Adaptive Immune Response
6.9K
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
6.9K
Immunological Memory
12.3K
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
12.3K
