Evidence map›Paper›PMID 9650964›Full record

ArticleJournal of clinical microbiology1998

Diagnostic use of PCR for detection of Pneumocystis carinii in oral wash samples.

J Helweg-Larsen, J S Jensen, T Benfield, U G Svendsen, J D Lundgren, B Lundgren

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical microbiology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
6.8field-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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 111 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Journal of clinical medicine · 2025
    Review
  4. An overview of the laboratory diagnosis ofJournal of clinical microbiology · 2025
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  5. Is It Possible to DifferentiateJournal of fungi (Basel, Switzerland) · 2021
    Article
  6. Review
  7. Article
  8. Comparative Evaluation Between the RealStarAnnals of laboratory medicine · 2019
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Update on the diagnosis and treatment of Pneumocystis pneumonia.Therapeutic advances in respiratory disease · 2011
    Review
  14. Article
  15. Article
  16. Principles and applications of polymerase chain reaction in medical diagnostic fields: a review.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2009
    Article
  17. Article
  18. Article
  19. Article
  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

6 authors at 3 institutions in 2 countries.

J Helweg-LarsenDepartment of Clinical Microbiology, Hvidovre Hospital, Denmark.
J S Jensen
T Benfield
U G Svendsen
J D Lundgren
B Lundgren
Hvidovre Hospital · DKRigshospitalet · DKStatens Serum Institut · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is a need to develop noninvasive methods for the diagnosis of Pneumocystis carinii pneumonia in patients unable to undergo bronchoscopy or induction sputum. Oral wash specimens are easily obtained, and P. carinii nucleic acid can be amplified and demonstrated by PCR. In routine clinical use, easy sample processing and single-round PCR are needed to ensure rapid analysis and to reduce the risk of contamination. We developed a single-round Touchdown PCR (TD-PCR) protocol with the ability to detect PCR inhibition in the specimen. The TD-PCR was evaluated in a routine diagnostic laboratory and was compared to a previously described PCR protocol (mitochondrial RNA) run in a research laboratory. Both PCR methods amplified a sequence of the mitochondrial rRNA gene of P. carinii. Paired bronchoalveolar lavage (BAL) and oral wash specimens from 76 consecutive human immunodeficiency virus type 1-infected persons undergoing a diagnostic bronchoscopy were included. The TD-PCR procedure was quicker than the mitochondrial PCR procedure (<24 versus 48 h) and, compared to microscopy, had sensitivity, specificity, and positive and negative predictive values of 89, 94, 93, and 91%, respectively, for oral wash specimens and 100, 91, 90, and 100%, respectively, for BAL specimens. Our results suggest that oral wash specimens are a potential noninvasive method to obtain a diagnostic specimen during P. carinii pneumonia infection and that it can be applied in a routine diagnostic laboratory.

Indexed as

AIDS-Related Opportunistic InfectionsBronchoalveolar Lavage FluidBronchoscopyDNA, FungalEvaluation Studies as TopicHumansMouthPneumocystisPneumonia, PneumocystisPolymerase Chain ReactionPredictive Value of TestsProspective StudiesRNA, RibosomalSensitivity and SpecificitySodium ChlorideDNA, FungalRNA, RibosomalSodium Chloride

Identifiers

PMID9650964
PMCPMC104980
OpenAlexW2149892238

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.