DOI: 10.1101/505115Dec 25, 2018Paper

The Salivary Microbiome: Analysis of by Pyrosequencing and the Relationship with Helicobacter pylori Infection

BioRxiv : the Preprint Server for Biology
Yingjie JiHong Lu


Backgrounds: There have been reports of Helicobacter pylori (H. pylori) in the oral cavity and it has been suggested that the oral cavity may be a reservoir for H. pylori reflux from the stomach. Objectives: High-throughput pyrosequencing was used to assess the structure and composition of oral microbiota communities in individuals with or without confirmed H. pylori infection. Methods: Saliva samples were obtained from 34 H. pylori infected and 24 H. pylori uninfected subjects. Bacterial genomic DNA was extracted and examined by pyrosequencing by amplification of the 16S rDNA V3-V4 hypervariable regions followed by bioinformatics analysis. Saliva sampling was repeated from 22 of the 34 H. pylori infected subjects 2 months after H. pylori eradication. Results: High-quality sequences (2,812,659) clustered into 95,812 operational taxonomic units (OTUs; 97% identity), representing 440 independent species belonging to 138 genera, 68 families, 36 orders, 21 classes, and 11 phyla. Species richness (alpha diversity) of H. pylori infected subjects was similar to that of uninfected subjects. Eradication treatment decreased saliva bacterial diversity. Beta diversity analysis showed that the salivary microbial community structure differed...Continue Reading

Related Concepts

Bacterial Infections
DNA, Ribosomal
Helicobacter pylori
Oral Cavity
Antibiotic Therapy
DNA Amplification
Bacterial Infection due to Helicobacter Pylori (H. Pylori)

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