【摘要】 目的分析功能性消化不良患者与健康对照者唾液菌群的差异。方法收集功能性消化不良患者及健康对照者的唾液标本,提取总基因组DNA,采用高通量测序技术对样本中细菌的16SrRNA-V4区进行DNA测序后进行生物信息学分析。结果功能性消化不良组唾液中的菌群以变形菌门为主,健康对照组以拟杆菌门为主。功能性消化不良唾液菌群的Chao1、ACE、Shannon指数分别为1 295、1 351、4.93,健康对照组为1 001、1 019、5.28。PCoA可基本将两组间的唾液菌群区分开。LEfSe分析发现两组间有差异菌群共有16个,包括普式菌属、奈瑟菌属及变形菌门等。结论功能性消化不良患者唾液有其特征性的菌群组成,以变形菌门为主,但两组间的丰富度及多样性无差别,奈瑟菌属是两组间差异显著的细菌之一。更多还原

【Abstract】 Objective To analyze the difference of salivary microbiome between the patients with functional dyspepsia and healthy controls.Methods Saliva samples were collected from the patients with functional dyspepsia and healthy control.Genomic DNA of the samples was extracted,and the high-throughput sequencing technology was used to conduct DNA sequence of 16 S rRNA-V4 region.Subsequently,all the data were performed by the bioinformatic analysis.Results The salivary microbiome in the functional dyspepsia group was dominated by Proteobacteria,while Bacteroidetes was the top microbiota in the heathy control group.In the functional dyspepsia group,the Chao1 index,ACE index,Shannon index and Simpson index were 1 295,1 351,4.93 and 0.90 respectively.In the healthy control group,the above indexes were 1 001,1 351,5.28 and 0.92 respectively.The PCoA basically separated the microbiome composition of the two groups.Sixteen kinds of microbiota were significantly different between two groups using linear discriminant analysis effect size tool,including Bacteroidetes,Prevotella,Prevotellaceae,Neisseria,Betaproteobacteria and Proteobacteria,etc.Conclusion Saliva in the patients with functional dyspesia has characteristic microbiome composition,which is dominated by Proteobacteria,but the richness and diversity between the two groups have no difference.Neisseria is one of the significantly different bacteria between the two groups.更多还原