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Bacterial biofilm in adenoids of children with chronic otitis media. Part II: a case-control study of nasopharyngeal microbiota, virulence, and resistance of biofilms in adenoids. | LitMetric

Bacterial biofilm in adenoids of children with chronic otitis media. Part II: a case-control study of nasopharyngeal microbiota, virulence, and resistance of biofilms in adenoids.

Acta Otolaryngol

Department of Otorhinolaryngology, Head and Neck Surgery, Lariboisière University Hospital, APHP, UMR 1141 Center for the Developing Brain, Paris Biobank BB-0033-00064, Platform of Biopathology and Innovative Technologies for Health, University of Paris Nord, Paris, France.

Published: March 2020

AI Article Synopsis

Article Abstract

: We previously described that adenoid tissue in children with chronic otitis media (COM) contained more mucosal biofilms than adenoid tissue removed for hypertrophy. The aim of the second part was to characterize nasopharyngeal microbiota and explore virulence of the most common middle ear pathogens.: Bacteriological analysis was performed following a culture-based approach on the samples recovered from 30 patients of COM group (15 biofilm-positive and 15 biofilm-negative) and from 30 patients of a control group (15 biofilm-positive and 15 biofilm-negative). Virulence factors of , and were investigated.: The most frequent species were Firmicutes followed by and . The presence of biofilm was statistically associated with an increase of the number of bacterial species and Firmicutes phylum regardless of the condition (case/control). No virulence factors associated with invasive isolates were found for the most common middle ear pathogens.: This case-control study demonstrated that the presence of COM plus biofilm was associated with a given microbiota which contained more Firmicutes. Our study allows a better understanding of physiopathological mechanisms involved in chronic otitis media and paves the way for further investigations.

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Source
http://dx.doi.org/10.1080/00016489.2020.1718749DOI Listing

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