Dysbiosis by Neutralizing Commensal Mediated Inhibition of Pathobionts

Overview

Journal Sci Rep

Specialty Science

Date 2016 Nov 30

PMID 27897256

Citations 16

Authors

Esteban Rodriguez Herrero

Vera Slomka

Nico Boon

Kristel Bernaerts

Emma Hernandez-Sanabria

Marc Quirynen

Wim Teughels

Affiliations

Soon will be listed here.

Abstract

Dysbiosis in the periodontal microbiota is associated with the development of periodontal diseases. Little is known about the initiation of dysbiosis. It was hypothesized that some commensal bacteria suppress the outgrowth of pathobionts by HO production. However, serum and blood components released due to inflammation can neutralize this suppressive effect, leading to the initiation of dysbiosis. Agar plate, dual-species and multi-species ecology experiments showed that HO production by commensal bacteria decreases pathobiont growth and colonization. Peroxidase and blood components neutralize this inhibitory effect primarily by an exogenous peroxidase activity without stimulating growth and biofilm formation of pathobionts directly. In multi-species environments, neutralization of HO resulted in 2 to 3 log increases in pathobionts, a hallmark for dysbiosis. Our data show that in oral biofilms, commensal species suppress the amounts of pathobionts by HO production. Inflammation can neutralize this effect and thereby initiates dysbiosis by allowing the outgrowth of pathobionts.

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