Evidence map›Paper›PMID 22545149›Full record

ArticlePloS one2012

Chlamydia pneumoniae-specific IgE is prevalent in asthma and is associated with disease severity.

David L Hahn, Allison Schure, Katir Patel, Tawanna Childs, Eduard Drizik, Wilmore Webley

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 2 pooled it
4.0field-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

36 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Chlamydiosis in Animals.Animals : an open access journal from MDPI · 2024
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Frequency ofNew microbes and new infections · 2020
    Article
  13. Heliyon · 2020
    Article
  14. Review
  15. Review
  16. Cellular mechanisms underlying steroid-resistant asthma.European respiratory review : an official journal of the European Respiratory Society · 2019
    Review
  17. Epidemiology of Infections and Development of Asthma.Immunology and allergy clinics of North America · 2019
    Review
  18. Microorganisms · 2019
    Review
  19. RespiratoryFrontiers in immunology · 2018
    Article
  20. 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

6 authors at 2 institutions in 1 country.

David L HahnDepartments of Family Medicine, University of Wisconsin School of Medicine and Public Health, and Dean Clinic, Madison, Wisconsin, United States of America.
Allison Schure
Katir Patel
Tawanna Childs
Eduard Drizik
Wilmore Webley
University of Massachusetts Amherst · USUniversity of Wisconsin–Madison · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeveral Chlamydia pneumoniae (Cp) biomarkers have been associated with asthma but Cp-specific IgE (Cp IgE) has not been investigated extensively. Our objective was to investigate Cp IgE in community adult asthma patients.

methods(1) Prevalence of Cp IgE (measured by immunoblotting) and Cp DNA (by polymerase chain reaction) in peripheral blood, and biomarker associations with asthma severity. (2) Case-control studies of Cp IgE association with asthma using healthy blood donor (study 1) and non-asthmatic clinic patient (study 2) controls.

resultsOf 66 asthma subjects (mean age 40.9 years, range 5-75, 59% male, 45% ever-smokers) 33 (50%) were Cp IgE positive and 16 (24%) were Cp DNA positive (P = 0.001 for association of Cp IgE and DNA). Cp IgE was detected in 21% of mild intermittent asthma v 79% of severe persistent asthma (test for trend over severity categories, P = 0.002). Cp IgE detection was significantly (P = 0.001) associated with asthma when compared to healthy blood donor controls but not when compared to clinic controls.

conclusionsHalf of this sample of community asthma patients had detectable IgE against C. pneumoniae. Cp IgE was strongly and positively associated with asthma severity and with asthma when healthy blood donor controls were used. These results support the inclusion of Cp IgE as a biomarker in future studies of infectious contributions to asthma pathogenesis.

Indexed as

AdolescentAdultAgedAnti-Bacterial AgentsAntibodies, BacterialAsthmaAzithromycinCase-Control StudiesChildChlamydophila InfectionsChlamydophila pneumoniaeFemaleHumansImmunoglobulin EMaleMiddle AgedAnti-Bacterial AgentsAntibodies, BacterialAzithromycinImmunoglobulin E

Identifiers

PMID22545149
PMCPMC3335830
OpenAlexW2131675722

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.