Evidence map›Paper›PMID 30905581›Full record

ArticleJournal of cystic fibrosis : official journal of the European Cystic Fibrosis Society2019

Assessment of stability and fluctuations of cultured lower airway bacterial communities in people with cystic fibrosis.

Laura J Sherrard, Gisli G Einarsson, Elinor Johnston, Katherine O'Neill, Leanne McIlreavey, Stephanie J McGrath, Deirdre F Gilpin, Damian G Downey, Alastair Reid, Noel G McElvaney and 4 more

Abstract read
In one paragraph

Article in Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

  1. Review
  2. Article
  3. 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
  4. Article
  5. Article
  6. Review
  7. Observational
  8. Article
  9. Article
  10. Article
  11. Article
  12. The Open Challenge ofFrontiers in bioengineering and biotechnology · 2020
    Review
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

14 authors.

Laura J SherrardHalo Research Group, School of Pharmacy, Queen's University Belfast, Belfast, UK. Electronic address: l.sherrard@qub.ac.uk.
Gisli G EinarssonHalo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK.
Elinor JohnstonHalo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK.
Katherine O'NeillHalo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK.
Leanne McIlreaveyHalo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK.
Stephanie J McGrathHalo Research Group, School of Pharmacy, Queen's University Belfast, Belfast, UK.
Deirdre F GilpinHalo Research Group, School of Pharmacy, Queen's University Belfast, Belfast, UK.
Damian G DowneyHalo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK; Belfast Health and Social Care Trust, Belfast, UK.
Alastair ReidBelfast Health and Social Care Trust, Belfast, UK.
Noel G McElvaneyRespiratory Research Division, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland.
Richard C BoucherMarsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Marianne S MuhlebachMarsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
J Stuart ElbornHalo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK; Imperial College and Royal Brompton Hospital and Harefield NHS Foundation Trust, London, UK.
Michael M TunneyHalo Research Group, School of Pharmacy, Queen's University Belfast, Belfast, UK.

Funding

The Mucus Transport Apparatus: Why Two Layers?P50HL084934 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BOUCHER, RICHARD CHARLES · 2006 to 2010
$15.6M
The Role of Anaerobic Bacterial Infection in Cystic FibrosisR01HL092964 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BOUCHER, RICHARD CHARLES · 2010 to 2013
$2.9M
NHLBI NIH HHS P50 HL084934NHLBI NIH HHS R01 HL092964
6 · The paper itself

Abstract

backgroundRoutine clinical culture detects a subset of the cystic fibrosis (CF) airways microbiota based on culture-independent (molecular) methods. This study aimed to determine how extended sputum culture of viable bacteria changes over time in relation to clinical status and predicts exacerbations.

methodsSputa from patients at a baseline stable and up to three subsequent time-points were analysed by extended-quantitative culture; aerobe/anaerobe densities, ecological indexes and community structure were assessed together with clinical outcomes.

resultsEighty patients were prospectively recruited. Sputa were successfully collected and cultured at 199/267 (74.5%) study visits. Eighty-two sputa from 25 patients comprised a complete sample-set for longitudinal analyses. Bacterial density, ecological indexes and clinical outcomes were unchanged in 18 patients with three sequential stable visits. Conversely, in 7 patients who had an exacerbation, total bacterial and aerobe densities differed over four study visits (P < .001) with this difference particularly apparent between the baseline visit and completion of acute antibiotic treatment where a decrease in density was observed. Bacterial communities were more similar within than between patients but stable patients had the least variation in community structure over time. Using logistic regression in a further analysis, baseline features in 37 patients without compared to 15 patients with a subsequent exacerbation showed that clinical measures rather than bacterial density or ecological indexes were independent predictors of an exacerbation.

conclusionsGreater fluctuation in the viable bacterial community during treatment of an exacerbation than between stable visits was observed. Extended-quantitative culture did not provide prognostic information of a future exacerbation.

Indexed as

Cystic FibrosisSymptom AssessmentAdolescentAdultAnti-Bacterial AgentsBiotaChildColony Count, MicrobialDisease ProgressionFemaleHumansLungMaleMicrobiotaPatient AcuityPrognosisAnti-Bacterial AgentsBacterial densityBacterial ecologyExtended-quantitative cultureSputum

Identifiers

PMID30905581
PMCPMC6754815

What OpenQuestion holds

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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.