Evidence map›Paper›PMID 12832674›Full record

ArticleThorax2003

Asymptomatic carriage of Pneumocystis jiroveci in subjects undergoing bronchoscopy: a prospective study.

N A Maskell, D J Waine, A Lindley, J C T Pepperell, A E Wakefield, R F Miller, R J O Davies

Open access · bronzeAbstract read
In one paragraph

Article in Thorax, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 2 pooled it
6.4field-weighted citation impact, top 3% 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

61 citing papers in PubMed, 2 syntheses or guidelines pooled it, 192 citations in OpenAlex.

  1. Guideline
  2. Guideline
  3. Journal of investigative medicine : the official publication of the American Federation for Clinical Research · 2017
    Trial
  4. Article
  5. An overview of the laboratory diagnosis ofJournal of clinical microbiology · 2025
    Review
  6. Metagenomic next-generation sequencing assists in diagnosingRespiratory medicine case reports · 2025
    Article
  7. Retracing the evolution ofMicrobiology and molecular biology reviews : MMBR · 2024
    Review
  8. Article
  9. Molecular and microscopy detection ofFrontiers in medicine · 2023
    Article
  10. [Pneumocystis jirovecii Pneumonia in Patients with Lung Cancer: A Review].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2022
    Review
  11. Article
  12. Performance of a Real Time PCR forJournal of fungi (Basel, Switzerland) · 2022
    Article
  13. Is It Possible to DifferentiateJournal of fungi (Basel, Switzerland) · 2021
    Article
  14. Transmission and Colonization ofJournal of fungi (Basel, Switzerland) · 2021
    Review
  15. Article
  16. Pneumocystis jirovecii Disease: Basis for the Revised EORTC/MSGERC Invasive Fungal Disease Definitions in Individuals Without Human Immunodeficiency Virus.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
    Article
  17. Pathogenic microorganism detection in AIDS patients using bronchoalveolar lavage fluid.International journal of clinical and experimental pathology · 2020
    Article
  18. Clinical Performance of (1,3) Beta-D Glucan for the Diagnosis of Pneumocystis Pneumonia (PCP) in Cancer Patients Tested With PCP Polymerase Chain Reaction.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2019
    Article
  19. Molecular diagnosis and genotyping ofCurrent medical mycology · 2019
    Article
  20. PositiveCanadian respiratory journal · 2018
    Article

1 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

N A MaskellOxford Centre for Respiratory Medicine, Churchill Hospital, Oxford Radcliffe NHS Trust, Oxford OX3 7LJ, UK.
D J Waine
A Lindley
J C T Pepperell
A E Wakefield
R F Miller
R J O Davies
Churchill Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe opportunistic fungus Pneumocystis jiroveci is a common cause of respiratory infection in immunocompromised patients. By contrast, pneumocystis pneumonia (PCP) occurs only rarely in immunocompetent individuals. Asymptomatic colonisation with P jiroveci has recently been described in patients who are either minimally immunosuppressed or who have underlying lung disorders such as bronchiectasis. We sought to determine the prevalence of asymptomatic colonisation by P jiroveci in a cohort of adult patients undergoing diagnostic bronchoscopy.

methodsA prospective observational cohort study was performed in patients who required bronchoscopy and bronchoalveolar lavage (BAL) as part of their routine clinical assessment. All the samples underwent standard microbiological analysis and a Grocott methenamine silver stain was performed where clinically indicated to detect the presence of P jiroveci. Polymerase chain reaction for detection of P jiroveci specific DNA was also performed.

resultsNinety three consecutive BAL fluid samples were analysed, 17 (18%) of which contained P jiroveci DNA. Of the potential predictors examined, only glucocorticoid use was significantly associated with detectable P jiroveci DNA. Eighteen patients were receiving oral glucocorticoids (equivalent to >20 mg/day prednisolone) at the time of bronchoscopy, of whom eight (44%) had detectable P jiroveci DNA. In contrast, P jiroveci was detected in only nine of 75 patients (12%) who were not receiving glucocorticoids (difference between proportions 32%, 95% CI 8 to 57; p=0.004, two tailed Fisher's exact test).

conclusionsP jiroveci colonisation, as determined by detection of P jiroveci DNA in BAL fluid, is common in HIV negative patients with primary respiratory disorders undergoing bronchoscopy and BAL. The higher prevalence in patients receiving corticosteroids suggests that oral glucocorticoid therapy is an independent risk factor for colonisation. In contrast, underlying lung cancer or COPD did not appear to be risk factors.

Indexed as

AdultAgedAged, 80 and overAscomycotaBronchoalveolar Lavage FluidBronchoscopyCohort StudiesDNA, FungalFemaleFollow-Up StudiesForced Expiratory VolumeGlucocorticoidsHumansIncidental FindingsLung Diseases, FungalMaleDNA, FungalGlucocorticoids

Identifiers

PMID12832674
PMCPMC1746733
OpenAlexW2063560738

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.