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Impact of the Respiratory Microbiome on Host Responses to Respiratory Viral Infection.

Impact of the Respiratory Microbiome on Host Responses to Respiratory Viral Infection.
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Pichon M, Lina B, Josset L,


Pichon M, Lina B, Josset L, (click to view)

Pichon M, Lina B, Josset L,

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Vaccines 2017 11 035(4) pii E40
Abstract

Viruses are responsible for most of both upper and lower acute respiratory infections (ARIs). The microbiome-the ecological community of microorganisms sharing the body space, which has gained considerable interest over the last decade-is modified in health and disease states. Even if most of these disturbances have been previously described in relation to chronic disorders of the gastrointestinal microbiome, after a short reminder of microbiome characteristics and methods of characterization, this review will describe the impact of the microbiome (mainly respiratory) on host responses to viral ARIs. The microbiome has a direct environmental impact on the host cells but also an indirect impact on the immune system, by enhancing innate or adaptive immune responses. In microbial infections, especially in viral infections, these dramatic modifications could lead to a dramatic impact responsible for severe clinical outcomes. Studies focusing on the microbiome associated with transcriptomic analyses of the host response and deep characterization of the pathogen would lead to a better understanding of viral pathogenesis and open avenues for biomarker development and innovative therapeutics.

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