• Zhengyang Zhu, Zhixing He, Guanqun Xie, Yongsheng Fan, and Tiejuan Shao.
• The first clinical college, Zhejiang Chinese Medical University, Hangzhou 310053, China.
• Medicine (Baltimore). 2021 Mar 12; 100 (10): e24742e24742.

AbstractOral microbiota has been implicated in pathogenesis of recurrent aphthous stomatitis (RAS), which is a common mucosal disorder with unclear etiology. This study has explored the association between oral microbiota disorder and RAS in high-risk young female population.Forty-five young females were enrolled, including 24 RAS patients and 21 healthy individuals. Oral microbiome was analyzed by Illumina Miseq sequencing.Oral microbiota associated with RAS was characterized by the lower alpha-diversity indices (Chao1 and ACE). Several infectious pathogens increased in RAS, such as genera Actinobacillus, Haemophilus, Prevotella and Vibrio. The PICRUSt analysis indicated that the oral microbiota might be related with the up-regulation of genes involving infectious and neurodegenerative diseases, environmental adaptation, the down-regulation of genes involving basal metabolism, such as carbohydrate, energy, and amino acid metabolism.This study indicated that oral microbiota may play a significant role in RAS development.Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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