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Perturbations of the CD8+ T-cell repertoire in CVID patients with complications

机译:患有并发症的CVID患者CD8 + T细胞库的摄动

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摘要

A higher chronic expansion of effector cytotoxic CD8+DR+ T-lymphocytes has been reported in common variable immunodeficiency (CVID) patients with complications such as splenomegaly, autoimmune disease and/or granulomatous disease. In order to document the features associated with this T cell activation involving the CD8+ T-compartment, we examined the diversity of the alpha/beta TCR repertoire of the patient's CD8+ T-lymphocytes using the qualitative analysis of the CDR3 lengths (Immunoscope).Ten CIVD patients were enrolled in this study, four without complications (Group 1), six with complications (Group 2). All patients exhibited non-gaussian altered CDR3 length distributions, albeit to different extent within the different Vβ families. CVID patients with activated CD8+ T-cells show a reduction of their TCR repertoire diversity which is more severe in patients with complications. Viral reactivations such as CMV are suspected to be part of the mechanisms underlying immunosenescence.
机译:据报道,常见的可变免疫缺陷症(CVID)患者,如脾肿大,自身免疫性疾病和/或并发症,其效应细胞毒性CD8 + DR + T淋巴细胞的慢性扩张性更高肉芽肿病。为了记录与涉及CD8 + T隔室的T细胞活化相关的特征,我们检查了患者CD8 + 的alpha / beta TCR库的多样性。使用CDR3长度的定性分析(免疫镜)检测T淋巴细胞。本研究招募了10名CIVD患者,其中4例无并发症(第1组),六例有并发症(第2组)。所有患者表现出非高斯改变的CDR3长度分布,尽管在不同的Vβ家族中程度不同。具有激活的CD8 + T细胞的CVID患者表现出其TCR谱库多样性的降低,在并发症患者中更为严重。病毒再激活(例如CMV)被怀疑是免疫衰老机制的一部分。

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