摘要
背景:拷贝数变异(CNV)在包括阿尔茨海默氏病(AD)在内的各种神经系统疾病的遗传病因中起着重要作用。 2型糖尿病(T2DM)和重度抑郁症(MDD)与AD具有共同的机制和信号传导途径。 目的:我们旨在评估CNVs区域,这些区域可能包含67位沙特家族和散发性AD患者的AD,T2DM和MDD贡献基因,而AD的已知基因和以前的APOE基因型没有改变。 方法:使用CytoScan-HD阵列分析DNA。应用了两层过滤标准。在基因组变异数据库(DGV)中检查了所有已识别的CNV。 结果:在我们的研究中,共鉴定出1086枚CNV(565增益和521损失)。我们发现73个CNV含有可能与AD,T2DM或MDD相关的基因。 19台CNV是新颖的。最重要的是,在我们的研究队列中仅一例患者就有42例CNV。 1号和13号染色体上的两个大收获带有与所研究的疾病有关的基因。我们在编码参与淀粉样β肽代谢的蛋白质(AGRN,APBA2,CR1,CR2,IGF2R,KIAA0125,MBP,RER1,RTN4R,VDR和WISPI)的基因中鉴定了CNV,或Tau蛋白(CACNAIC,CELF2,DUSP22, HTRA1和SLC2A14)。 结论:目前的工作提供了有关沙特阿尔茨海默氏病患者中与AD,T2DM和MDD相关的CNV的信息。
关键词: 阿尔茨海默氏病,拷贝数变异,2型糖尿病,重度抑郁症,独特和复发性变异,痴呆。
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