Evidence map›Paper›PMID 26787714›Full record

ArticleInfection and immunity2016

Streptococcus pneumoniae Colonization Disrupts the Microbial Community within the Upper Respiratory Tract of Aging Mice.

Netusha Thevaranjan, Fiona J Whelan, Alicja Puchta, Eta Ashu, Laura Rossi, Michael G Surette, Dawn M E Bowdish

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 43 citations in OpenAlex.

  1. Omics Approaches to Unraveling the Complexity of the Gut-Lung Axis.Methods in molecular biology (Clifton, N.J.) · 2026
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  11. Nasopharyngeal Carriage of Methicillin-ResistantInfectious disease reports · 2021
    Article
  12. Review
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  16. B Cell Immunosenescence.Annual review of cell and developmental biology · 2020
    Review
  17. Article
  18. Experimental EvolutionmSystems · 2020
    Article
  19. Animal Models ofInternational journal of molecular sciences · 2019
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Netusha ThevaranjanDepartment of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada McMaster Immunology Research Centre, McMaster University, Hamilton, Canada Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada.
Fiona J WhelanFarncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada.
Alicja PuchtaDepartment of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada McMaster Immunology Research Centre, McMaster University, Hamilton, Canada Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada.
Eta AshuDepartment of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada McMaster Immunology Research Centre, McMaster University, Hamilton, Canada Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada.
Laura RossiFarncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada.
Michael G SuretteMichael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada Department of Medicine, McMaster University, Hamilton, Canada.
Dawn M E BowdishDepartment of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada McMaster Immunology Research Centre, McMaster University, Hamilton, Canada Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada bowdish@mcmaster.ca.
McMaster University · CAMcMaster University Medical Centre · CAPopulation Health Research Institute · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Nasopharyngeal colonization by the Gram-positive bacterium Streptococcus pneumonia is a prerequisite for pneumonia and invasive pneumococcal diseases. Colonization is asymptomatic, involving dynamic and complex interplay between commensals, the host immune system, and environmental factors. The elderly are at an increased risk of developing pneumonia, which might be due to changes in the respiratory microbiota that would impact bacterial colonization and persistence within this niche. We hypothesized that the composition of the upper respiratory tract (URT) microbiota changes with age and subsequently can contribute to sustained colonization and inefficient clearance of S. pneumoniae To test this, we used a mouse model of pneumococcal colonization to compare the composition of the URT microbiota in young, middle-aged, and old mice in the naive state and during the course of colonization using nasal pharyngeal washes. Sequencing of variable region 3 (V3) of the 16S rRNA gene was used to identify changes occurring with age and throughout the course of S. pneumonia colonization. We discovered that age affects the composition of the URT microbiota and that colonization with S. pneumoniae is more disruptive of preexisting communities in older mice. We have further shown that host-pathogen interactions followingS. pneumonia colonization can impact the populations of resident microbes, including Staphylococcus and Haemophilus. Together, our findings indicate alterations to the URT microbiota could be detrimental to the elderly, resulting in increased colonization of S. pneumonia and decreased efficiency in its clearance.

Indexed as

AgingCarrier StateAnimalsFemaleMiceMice, Inbred C57BLMicrobiotaNasopharynxSpecific Pathogen-Free OrganismsStreptococcus pneumoniaeTime Factors

Identifiers

PMID26787714
PMCPMC4807479
OpenAlexW2288573439

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.