Alteration of oral flora in Mongolian patients with Behçet's disease: a multicentre study.

Abstract:

OBJECTIVES:Behçet's disease (BD) is characterised by repeated acute inflammatory attacks with aphthous ulcers of the oral mucosa, uveitis of the eyes, skin symptoms, and genital ulcers. Although its aetiology is still unknown, there is evidence of the involvement of oral bacteria in systemic diseases. Various types of oral bacteria may be involved in the development and progression of BD. The present study investigated alterations in the oral flora of patients with BD in Mongolia. We collected saliva samples from the Mongolian BD group and healthy control (HC) group, and the oral flora were analysed using next-generation sequencer (NGS). METHODS:DNA was extracted from the unstimulated saliva samples from the 47 BD and 48 HC subjects. The DNA was amplified from the V3-V4 region of 16S rRNA using PCR, and the data were acquired using NGS. Based on the obtained data, we analysed the alpha diversity, beta diversity, and bacterial taxonomy of the salivary flora. RESULTS:Beta diversity differed significantly between the BD and HC flora, but no significant differences were observed in alpha diversity. We found that the proportions of three genera - an S24-7 family unknown species, a mitochondria family unknown species, and Akkermansia species associated with IL-10 production - were significantly lower in the BD than in the HC group. CONCLUSIONS:The reduced proportions of the S24-7 family and symbiotic Akkermansia species may be key phenomena in the oral flora of patients with BD.

journal_name

Clin Exp Rheumatol

authors

Balt J,Uehara O,Abiko Y,Jamyanjav B,Jav S,Nagasawa T,Mori M,Horie Y,Fujita M,Lennikov A,Ohta T,Hiraoka M,Iwata D,Namba K,Ohno S,Kitaichi N

subject

Has Abstract

pub_date

2020-09-01 00:00:00

pages

80-85

issue

5

eissn

0392-856X

issn

1593-098X

pii

16369

journal_volume

38 Suppl 127

pub_type

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