患有急性 Chikungunya 疾病的患者的先天性免疫反应
Wallace Pitanga Bezerra1, Raíza Nara Cunha Moizéis1, Amanda Costa Ayres Salmeron2
1Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte. Natal, Rio Grande do Norte, Natal, Rio Grande Do Norte, 59078-970, Brazil.
Medical microbiology and immunology
|June 7, 2023
概括
Chikungunya 疾病 (CHIKD) 涉及具有高调模式识别受体 (PRRs) 和细胞因子的先天免疫反应. 在急性CHIKD患者中,某些受体和细胞因子的更高表达与较低的病毒载荷相关.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 传染性疾病 传染性疾病
背景情况:
- Chikungunya 疾病 (CHIKD) 是一种蚊子传播的病毒性疾病,引起显著的发病率,主要是关节疼痛.
- 模式识别受体 (PRR) 在CHIKD病变发生中的作用尚未完全理解.
- 炎症调解剂和I型干扰素与CHIKD结果有关.
研究的目的:
- 研究急性CHIKD患者的RNA特异性PRRs,适应分子和细胞因子的表达.
- 为了将PRR和细胞因子表达与CHIKD患者的病毒载量和临床症状相关联.
主要方法:
- 招募28名急性CHIKD患者 (症状发作后3-5天) 和20名健康对照.
- 临床检查和外周血液采集用于PBMC隔离.
- 定量逆转录PCR (qRT-PCR) 用于分析PRRs (TLR3,RIG-I,MDA5),适应分子 (TRIF) 和细胞因子 (IL-6,IL-12,IFN-α,IFN-β,IFN-γ) 的基因表达.
主要成果:
- 急性CHIKD患者出现发烧,关节痛,头痛和肌痛.
- 与对照组相比,在CHIKD患者中观察到TLR3,RIG-I,MDA5和TRIF的升调.
- 在急性CHIKD中发现了IL-6,IL-12,IFN-α,IFN-β和IFN-γ的升高水平.
- 该TLR3-TRIF通路与高IL-6和IFN-α表达相关.
- 增加的MDA5,IL-12和IFN-α表达与较低的病毒载量有关.
结论:
- 天生的免疫激活,包括PRR和细胞因子,是急性CHIKD的一个关键特征.
- 在急性CHIKV感染期间,强烈的抗病毒反应被诱导.
- 对CHIKD免疫病理学和病毒清除的进一步研究对于开发有效的治疗方法至关重要.
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