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- 2016
16SrRNA克隆文库法分析成人龋病唾液微生物多样性
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Abstract:
摘要 目的: 讨论汉族人群中高龋和无龋人群口腔唾液微生物结构的差异。方法: 采集符合WHO采样标准的唾液样本6例,其中高龋组(CA组)3例,无龋组(CF组)3例,提取细菌总DNA,构建16S rRNA克隆文库,挑取阳性克隆子进行测序,并用MOTHUR等软件对结果进行分析,MEGA4.0软件构建系统发育树。结果: 共获得80个OTUs,归属于5个门,9个纲,10个目,14个科,19个属,其中有13个优势属;CA组优势属为:链球菌属(53.16%)、普氏菌属(28.77%)、颗粒链球菌属(9.34%);CF组优势菌为:链球菌属(46.12%)、普氏菌属(23.41%)、奈瑟菌属(14.35%)。结论: 16S rRNA克隆文库法已成熟,可用于口腔微生物群落结构的研究,当地汉族人群中高龋和无龋人群口腔微生物群落结构存在一定的差异,高龋组中优势菌(链球菌属、普氏菌属、颗粒链球菌属)对龋病发生发展的作用还有待进一步的研究
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