Low-dose Irradiation Affects the Functional Behavior of Oral Microbiota in the Context of Mucositis

Overview

Journal Exp Biol Med (Maywood)

Specialty Biology

Date 2015 Jul 24

PMID 26202372

Citations 11

Authors

Barbara W A Vanhoecke

Tine R G De Ryck

Kevin De boel

Siouxsie Wiles

Tom Boterberg

Tom Van de Wiele

Simon Swift

Affiliations

Soon will be listed here.

Abstract

The role of host-microbe interactions in the pathobiology of oral mucositis is still unclear; therefore, this study aimed to unravel the effect of irradiation on behavioral characteristics of oral microbial species in the context of mucositis. Using various experimental in vitro setups, the effects of irradiation on growth and biofilm formation of two Candida spp., Streptococcus salivarius and Klebsiella oxytoca in different culture conditions were evaluated. Irradiation did not affect growth of planktonic cells, but reduced the number of K. oxytoca cells in newly formed biofilms cultured in static conditions. Biofilm formation of K. oxytoca and Candida glabrata was affected by irradiation and depended on the culturing conditions. In the presence of mucins, these effects were lost, indicating the protective nature of mucins. Furthermore, the Galleria melonella model was used to study effects on microbial virulence. Irradiated K. oxytoca microbes were more virulent in G. melonella larvae compared to the nonirradiated ones. Our data indicate that low-dose irradiation can have an impact on functional characteristics of microbial species. Screening for pathogens like K. oxytoca in the context of mucosits could be useful to allow early detection and immediate intervention.

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