Cited by 75Oral microbiology and periodontitis researchMicrobial infections and disease researchGut microbiota and health

Profiling bacterial community in upper respiratory tracts

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Yi, Hana, Yong, Dongeun, Lee, Kyungwon, Cho, Yong-Joon, Chun, Jongsik·2014·BMC Infectious Diseases

Abstract

BACKGROUND: Infection by pathogenic viruses results in rapid epithelial damage and significantly impacts on the condition of the upper respiratory tract, thus the effects of viral infection may induce changes in microbiota. Thus, we aimed to define the healthy microbiota and the viral pathogen-affected microbiota in the upper respiratory tract. In addition, any association between the type of viral agent and the resultant microbiota profile was assessed. METHODS: We analyzed the upper respiratory tract bacterial content of 57 healthy asymptomatic people (17 health-care workers and 40 community people) and 59 patients acutely infected with influenza, parainfluenza, rhino, respiratory syncytial, corona, adeno, or metapneumo viruses using culture-independent pyrosequencing. RESULTS: The healthy subjects harbored primarily Streptococcus, whereas the patients showed an enrichment of Haemophilus or Moraxella. Quantifying the similarities between bacterial populations by using Fast UniFrac analysis indicated that bacterial profiles were apparently divisible into 6 oropharyngeal types in the tested subjects. The oropharyngeal types were not associated with the type of viruses, but were rather linked to the age of the subjects. Moraxella nonliquefaciens exhibited unprecedentedly high abundance in young subjects aged <6 years. The genome of M. nonliquefaciens was found to encode various proteins that may play roles in pathogenesis. CONCLUSIONS: This study identified 6 oropharyngeal microbiome types. No virus-specific bacterial profile was discovered, but comparative analysis of healthy adults and patients identified a bacterium specific to young patients, M. nonliquefaciens.

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Authors
Yi, H., Yong, D., Lee, K., Cho, Y.-J., & Chun, J.
Affiliations
  • Korea University (KR)
  • Yonsei University (KR)
  • Seoul National University (KR)
Corresponding author
Chun, Jongsik
Venue
BMC Infectious Diseases
Published
2014-11-13
Volume
14
Issue
1
Pages
583-583
ISSN
1471-2334 (ISSN-L)
OpenAlex
W2009912469
Cited by
75
References
60
Citations by year
2026: 4 · 2025: 1 · 2024: 4 · 2023: 9 · 2022: 7 · 2021: 11 · 2020: 5 · 2019: 4 · 2018: 9 · 2017: 8 · 2016: 6 · 2015: 7
FWCI
9.35
Type
journal article
Language
en
Open access
Locations
  • BMC Infectious Diseases (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • YUHSpace (Yonsei University Medical Library) (submittedVersion, cc-by-nc-nd)
  • Seoul National University Open Repository (Seoul National University) (submittedVersion, cc-by)
Funders
  • Centers for Disease Control and Prevention
  • Korea Centers for Disease Control and Prevention
Topics
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Life Sciences › Immunology and Microbiology › Microbiology › Microbial infections and disease research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
upper respiratory tract microbiota, oropharyngeal microbiota, respiratory viral infections, Moraxella nonliquefaciens, Streptococcus, Haemophilus, Moraxella, influenza, rhinovirus, respiratory syncytial virus, coronavirus, adenovirus, metapneumovirus
MeSH terms
Adolescent, Adult, Aged, Bacteria, Carrier State, Female, Haemophilus, Health Personnel, Humans, Male, Middle Aged, Moraxella, Respiratory System, Respiratory Tract Infections, Streptococcus, Virus Diseases, Young Adult, Asymptomatic Infections, Coinfection, Microbiota

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