Evidence map›Paper›PMID 25992575›Full record

ArticlePloS one2015

Reduced bacterial colony count of anaerobic bacteria is associated with a worsening in lung clearance index and inflammation in cystic fibrosis.

Katherine O'Neill, Judy M Bradley, Elinor Johnston, Stephanie McGrath, Leanne McIlreavey, Stephen Rowan, Alastair Reid, Ian Bradbury, Gisli Einarsson, J Stuart Elborn and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.8field-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

31 citing papers in PubMed, 61 citations in OpenAlex.

  1. Journal of bacteriology · 2026
    Review
  2. Article
  3. Functional CFTR may be required for Prevotella melaninogenica regulation of epithelial cell defense against Staphylococcus aureus.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Longitudinal changes in the cystic fibrosis airway microbiota with time and treatment.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. The respiratory microbiome and nontuberculous mycobacteria: an emerging concern in human health.European respiratory review : an official journal of the European Respiratory Society · 2021
    Review
  17. Article
  18. Microorganisms · 2021
    Article
  19. Observational
  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

11 authors at 3 institutions in 1 country.

Katherine O'NeillCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; Centre for Infection and Immunity, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom.
Judy M BradleyCentre for Health and Rehabilitation Technologies (CHART), University of Ulster, Belfast, United Kingdom.
Elinor JohnstonCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; Centre for Infection and Immunity, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom.
Stephanie McGrathCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom.
Leanne McIlreaveyCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom.
Stephen RowanCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; Centre for Infection and Immunity, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom.
Alastair ReidBelfast Health and Social Care Trust, Belfast, United Kingdom.
Ian BradburyCentre for Health and Rehabilitation Technologies (CHART), University of Ulster, Belfast, United Kingdom.
Gisli EinarssonCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; Centre for Infection and Immunity, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom.
J Stuart ElbornCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; Centre for Infection and Immunity, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom.
Michael M TunneyCF and Airways Microbiology Research Group, Queen's University Belfast, Belfast, United Kingdom; School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom.
Queen's University Belfast · GBUniversity of Ulster · GBBelfast Health and Social Care Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anaerobic bacteria have been identified in abundance in the airways of cystic fibrosis (CF) subjects. The impact their presence and abundance has on lung function and inflammation is unclear. The aim of this study was to investigate the relationship between the colony count of aerobic and anaerobic bacteria, lung clearance index (LCI), spirometry and C-Reactive Protein (CRP) in patients with CF. Sputum and blood were collected from CF patients at a single cross-sectional visit when clinically stable. Community composition and bacterial colony counts were analysed using extended aerobic and anaerobic culture. Patients completed spirometry and a multiple breath washout (MBW) test to obtain LCI. An inverse correlation between colony count of aerobic bacteria (n = 41, r = -0.35; p = 0.02), anaerobic bacteria (n = 41, r = -0.44, p = 0.004) and LCI was observed. There was an inverse correlation between colony count of anaerobic bacteria and CRP (n = 25, r = -0.44, p = 0.03) only. The results of this study demonstrate that a lower colony count of aerobic and anaerobic bacteria correlated with a worse LCI. A lower colony count of anaerobic bacteria also correlated with higher CRP levels. These results indicate that lower abundance of aerobic and anaerobic bacteria may reflect microbiota disruption and disease progression in the CF lung.

Indexed as

Bacterial LoadAdolescentAdultAgedAnti-Bacterial AgentsBacteria, AerobicBacteria, AnaerobicCase-Control StudiesChildC-Reactive ProteinCystic FibrosisFemaleForced Expiratory VolumeHumansInflammationLungAnti-Bacterial AgentsC-Reactive Protein

Identifiers

PMID25992575
PMCPMC4439045
OpenAlexW1603675788

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.