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Article Dans Une Revue Microorganisms Année : 2020

Human Skin Bacterial Community Response to Probiotic (Lactobacillus reuteri DSM 17938) Introduction

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The introduction of a strain or consortium has often been considered as a potential solution to restore microbial ecosystems. Extensive research on the skin microbiota has led to the development of probiotic products (with live bacterial strains) that are likely to treat dysbiosis. However, the effects of such introductions on the indigenous microbiota have not yet been investigated. Here, through a daily application of Lactobacillus reuteri DSM 17938 on volunteers’ forearm skin, we studied in vivo the impact of a probiotic on the indigenous skin bacterial community diversity using Terminal-Restriction Fragment Length Polymorphism (T-RFLP) for 3 weeks. The results demonstrate that Lactobacillus reuteri DSM 17938 inoculum had a transient effect on the indigenous community, as the resilience phenomenon was observed within the skin microbiota. Moreover, Lactobacillus reuteri DSM 17938 monitoring showed that, despite a high level of detection after 2 weeks of application, thereafter the colonization rate drops drastically. The probiotic colonization rate was correlated significantly to the effect on the indigenous microbial community structure. These preliminary results suggest that the success of probiotic use and the potential health benefits resides in the interactions with the human microbiota.
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hal-03040707 , version 1 (15-07-2024)

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Marie Frerejacques, Camille Rousselle, Loüen Gauthier, Salomé Cottet-Emard, Léa Derobert, et al.. Human Skin Bacterial Community Response to Probiotic (Lactobacillus reuteri DSM 17938) Introduction. Microorganisms, 2020, Public Health Microbiology, 8 (8), pp.1223. ⟨10.3390/microorganisms8081223⟩. ⟨hal-03040707⟩
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