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在埃及患者中评估CTLA-4 (+ 49A/G) 多态与类风湿性关节炎的相关性

Dina Ragab¹, Rasha M Hammoda², Nermin H El-Gharbawy³

¹Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt.

The Egyptian journal of immunology

|July 13, 2023

概括

细胞毒性T淋巴细胞相关蛋白4 (CTLA-4) 基因的遗传变异与类风湿性关节炎 (RA) 有关. CTLA-4 +49 A/G多态 (rs231775) 显示出在埃及患者中与RA有显著的关联.

科学领域:

免疫遗传学免疫遗传学
类风湿病学类风湿病学

背景情况:

细胞毒性T淋巴细胞相关蛋白4 (CTLA-4) 是T细胞反应和免疫耐受性的关键调节者.
CTLA-4中的遗传多态性已与各种自身免疫性疾病有关.
了解这些遗传联系对于阐明疾病发病因子至关重要.

研究的目的:

为了研究CTLA-4 +49 A/G多态 (rs231775) 与埃及队列中的类风湿性关节炎 (RA) 之间的关联.
与健康对照组相比,分析RA患者的基因型和等位基因频率.

主要方法:

使用限制片段长度多态性 (RFLP) 分析来确定CTLA-4+49 A/G基因型.
基因型和等位基因分布在104名RA患者和81名健康对照人群中进行了比较.
根据共同主导,主导,超主导和衰退遗传模型进行了统计分析.

主要成果:

在CTLA-4 +49 A/G多态和RA之间发现了显著的关联.
RA 患者表现出 AG 和 GG 基因型 (共主模式,p=0.0092) 和联合 AG+GG 基因型 (主导模式,p=0.0026) 的更高频率.
G等位基因与RA存在有显著的关联 (p=0.0032).

结论:

在埃及人群中,CTLA-4基因+49 A>G多态性与类风湿性关节炎有关.
种族的多样性和RA发病的复杂性质可能解释了全球文献中的不同结果.
这一发现有助于了解RA的遗传基础.

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