Evidence map›Paper›PMID 32513159›Full record

ArticleRespiratory research2020

Immunoreactivity to metal and silica associates with sarcoidosis in Dutch patients.

E Beijer, B Meek, X Bossuyt, S Peters, R C H Vermeulen, H Kromhout, M Veltkamp

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
3.5field-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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Systemic chronic beryllium disease: beyond lung disease.Occupational and environmental medicine · 2026
    Article
  4. Review
  5. Particles exposures and sarcoidosis.Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG · 2025
    Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Sarcoidosis: a general overview.Advances in rheumatology (London, England) · 2024
    Review
  11. Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. The Role ofMicroorganisms · 2022
    Review
  19. 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

7 authors at 4 institutions in 2 countries.

E BeijerInterstitial Lung Diseases Center of Excellence, Department of Pulmonology, St. Antonius Hospital, Koekoekslaan 1, 3435 CM, Nieuwegein, The Netherlands.ORCID http://orcid.org/0000-0003-0439-2550
B MeekDepartment of Medical Microbiology and Immunology, St. Antonius Hospital, Nieuwegein, The Netherlands.
X BossuytLaboratory Medicine, University Hospital Leuven, Leuven, Belgium.
S PetersInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands.
R C H VermeulenInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands.
H KromhoutInstitute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands.
M VeltkampInterstitial Lung Diseases Center of Excellence, Department of Pulmonology, St. Antonius Hospital, Koekoekslaan 1, 3435 CM, Nieuwegein, The Netherlands. m.veltkamp@antoniusziekenhuis.nl.
Utrecht University · NLSt. Antonius Ziekenhuis · NLKU Leuven · BEUniversity Medical Center Utrecht · NL

Funding

ZonMw 842002001
6 · The paper itself

Abstract

backgroundInvolvement of metals or silica in the pathogenesis of sarcoidosis has been suggested by several case reports and specific epidemiological studies. However, the combination of occupational exposure and an immunological reaction has not been studied before in a group of sarcoidosis patients and non-sarcoidosis controls.

methodsIn 256 sarcoidosis patients and 73 control patients with obstructive sleep apnea, exposure to metal and silica was assessed using a questionnaire consisting of a complete occupational history subsequently linked to job-exposure matrices. Next, immunoreactivity to aluminium, beryllium, zirconium and silica was determined in 33 sarcoidosis and 19 control patients using a lymphocyte proliferation test.

resultsIn sarcoidosis, 83 out 256 patients (32.4%) had occupational exposure to metals or silica, compared to 24.7% in the control group (p = 0.21). A significantly higher percentage of the sarcoidosis patients tested showed immunoreactivity to metals or silica compared to the control group (21.2 and 0% respectively, p = 0.039).

conclusionsImmunoreactivity to silica and metals was only found in sarcoidosis patients, supporting the hypothesis that these antigens may be involved in the pathogenesis of a distinct subgroup of sarcoidosis patients. This indicates that when searching for causative agents in sarcoidosis patients, besides beryllium, also zirconium, aluminium and silica deserve clinical investigation.

Indexed as

AdultBerylliumDiagnosis, DifferentialFemaleHumansIncidenceMaleNetherlandsOccupational ExposureSarcoidosisSilicon DioxideBerylliumSilicon DioxideAluminiumBerylliumMetalsSarcoidosisSilicaZirconium

Identifiers

PMID32513159
PMCPMC7282065
OpenAlexW3033737201

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.