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Metabolic capabilities are highly conserved among human nasal-associated species in pangenomic analyses.
mSystems
December 2024
Alkek Center for Metagenomics & Microbiome Research, Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, Texas, USA.
Unlabelled: e species are globally ubiquitous in human nasal microbiota across the lifespan. Moreover, nasal microbiota profiles typified by higher relative abundances of are often positively associated with health. Among the most common human nasal species are , , and .
View Article and Find Full Text PDFDescription of nasopharyngeal bacterial pathogens associated with different SARS-CoV-2 variants.
Microb Pathog
March 2024
Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), AP-HM, MEPHI, Marseille, France; IHU Méditerranée Infection, Marseille, France. Electronic address:
The emergence of the coronavirus pandemic facilitated the acquisition of mutations in the SARS-CoV-2 genome, resulting in the appearance of new variants over the past three years. We previously identified several taxa associated with the clinical outcome of COVID-19 disease in a retrospective study involving 120 patients (infected patients and negative subjects). However, little is known about whether the different variants could influence variations in the composition of the nasopharyngeal microbiota.
View Article and Find Full Text PDFTemperature influences commensal-pathogen dynamics in a nasal epithelial cell co-culture model.
mSphere
January 2024
Division of Pulmonary, Allergy, and Critical Care, Department of Medicine, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA.
Chronic rhinosinusitis (CRS) is an inflammatory disease of the paranasal sinuses, and microbial dysbiosis associated with CRS is thought to be a key driver of host inflammation that contributes to disease progression. is a common upper respiratory tract (URT) pathobiont associated with higher carriage rates in CRS populations, where -secreted toxins can be identified in CRS tissues. Although many genera of bacteria colonize the URT, few account for the majority of sequencing reads.
View Article and Find Full Text PDFInfluence of Microbiota on Clinical Expressions of Respiratory Viral Infections.
Am J Trop Med Hyg
February 2024
Aix Marseille Université, Institut de recherche pour le développement, Assistance Publique - Hôpitaux de Marseille, Microbes, Évolution, Phylogénie et Infection, Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.
Article Synopsis
- Respiratory infections, primarily caused by viruses, are a major health issue globally, and a study was conducted in rural Senegal to investigate the presence of viruses and bacteria in symptomatic and asymptomatic individuals.
- The research found that 83.6% of symptomatic individuals tested positive for at least one respiratory virus, with influenza A, metapneumovirus, and enterovirus being notably more common among those with symptoms, while 21.8% of asymptomatic individuals also had viral infections.
- Additionally, 82.0% of symptomatic subjects carried at least one respiratory bacterium, with Moraxella catarrhalis and Streptococcus pneumoniae being the most common, highlighting the need for further surveillance of these pathogens
Specific nasopharyngeal Corynebacterium strains serve as gatekeepers against SARS-CoV-2 infection.
Geroscience
October 2023
Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Semmelweis University, Budapest, Hungary.
The SARS-CoV-2 virus is still causing a worldwide problem. The virus settles primarily on the nasal mucosa, and the infection and its course depend on individual susceptibility. Our aim was to investigate the nasopharynx composition's role in the individual susceptibility.
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