BMC Infect Dis:CMV基因组变异与有症状的感染和听力损失相关性研究

2020-01-01 AlexYang MedSci原创

新生儿巨细胞病毒感染(cCMV)是最常见的先天性感染,并且是长期神经和感觉后遗症的主要诱因,其中最常见的为感官听力损失(SNHL)。尽管已有大量的研究,鉴定疾病风险增加的CMV感染儿童的临床或者实验室标记仍旧还没有鉴定。最近,有研究人员进行了病毒全基因组测序(NGS)来探索病毒多样性和特定的病毒变异与有症状的感染和SNHL相关性情况。研究包括了从30个从婴儿尿液中提取的CMV DNA样。研究人员对

新生儿巨细胞病毒感染(cCMV)是最常见的先天性感染,并且是长期神经和感觉后遗症的主要诱因,其中最常见的为感官听力损失(SNHL)。尽管已有大量的研究,鉴定疾病风险增加的CMV感染儿童临床或者实验室标记仍旧还没有鉴定。最近,有研究人员进行了病毒全基因组测序(NGS)来探索病毒多样性和特定的病毒变异与有症状的感染和SNHL相关性情况。

研究包括了从30个从婴儿尿液中提取的CMV DNA样。研究人员对有症状和无症状cCMV儿童以及有听力损失(n=13)和没有听力损失(n=17)儿童中取的样进行了变异频率分布分析。研究发现,CMV基因UL48A、UL88、US19和US22在有症状儿童中核酸多样性增加;而UL57、UL20、UL104、US14、UL115和UL35在具有听力损失儿童中多样性增加。另外,对有症状儿童和无症状儿童的单变异差异分析发现了UL55变异频率最高,而大多数与SNHL相关的变异在RL11基因家族。在无症状SNHL儿童中,研究人员在UL33和UL20基因中观察到了更高频的变异。

最后,研究人员指出,来源于新生儿的CMV基因组可以覆盖93%的病毒基因组,具变异多态性的准确性和可重复性良好,并且有利于发现与有症状和听力损失结果有关系的基因。

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    2020-08-17 wolongzxh
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    2020-01-03 ysjykql
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