Evidence map›Paper›PMID 36258251›Full record

ArticleMicrobiome2022

The lower airways microbiota and antimicrobial peptides indicate dysbiosis in sarcoidosis.

Kristel S Knudsen, Sverre Lehmann, Rune Nielsen, Solveig Tangedal, Andreu Paytuvi-Gallart, Walter Sanseverino, Einar M H Martinsen, Pieter S Hiemstra, Tomas M Eagan

Open access · goldAbstract readVideo-Audio Media
In one paragraph

Article in Microbiome, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Overview of multi-omics approaches for pulmonary sarcoidosis.EC pulmonology and respiratory medicine · 2025
    Article
  9. Review
  10. Review
  11. Review
  12. Pleural Empyema Caused by Streptococcus intermedius and Fusobacterium nucleatum: A Distinct Entity of Pleural Infections.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Article
  13. Sarcoidosis,Microorganisms · 2023
    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

9 authors at 4 institutions in 3 countries.

Kristel S KnudsenDepartment of Clinical Science, University of Bergen, Bergen, Norway. kristelknudsen@hotmail.com.
Sverre LehmannDepartment of Clinical Science, University of Bergen, Bergen, Norway.
Rune NielsenDepartment of Clinical Science, University of Bergen, Bergen, Norway.
Solveig TangedalDepartment of Clinical Science, University of Bergen, Bergen, Norway.
Andreu Paytuvi-GallartSequentia Biotech SL, Barcelona, Spain.
Walter SanseverinoSequentia Biotech SL, Barcelona, Spain.
Einar M H MartinsenDepartment of Clinical Science, University of Bergen, Bergen, Norway.
Pieter S HiemstraDepartment of Pulmonology, Leiden University Medical Center, Leiden, Netherlands.
Tomas M EaganDepartment of Clinical Science, University of Bergen, Bergen, Norway.
University of Bergen · NOHaukeland University Hospital · NOSOM Biotech (Spain) · ESLeiden University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe role of the pulmonary microbiome in sarcoidosis is unknown. The objectives of this study were the following: (1) examine whether the pulmonary fungal and bacterial microbiota differed in patients with sarcoidosis compared with controls; (2) examine whether there was an association between the microbiota and levels of the antimicrobial peptides (AMPs) in protected bronchoalveolar lavage (PBAL).

methodsThirty-five sarcoidosis patients and 35 healthy controls underwent bronchoscopy and were sampled with oral wash (OW), protected BAL (PBAL), and left protected sterile brushes (LPSB). The fungal ITS1 region and the V3V4 region of the bacterial 16S rRNA gene were sequenced. Bioinformatic analyses were performed with QIIME 2. The AMPs secretory leucocyte protease inhibitor (SLPI) and human beta defensins 1 and 2 (hBD-1 and hBD-2), were measured in PBAL by enzyme-linked immunosorbent assay (ELISA).

resultsAspergillus dominated the PBAL samples in sarcoidosis. Differences in bacterial taxonomy were minor. There was no significant difference in fungal alpha diversity between sarcoidosis and controls, but the bacterial alpha diversity in sarcoidosis was significantly lower in OW (p = 0.047) and PBAL (p = 0.03) compared with controls. The beta diversity for sarcoidosis compared with controls differed for both fungi and bacteria. AMP levels were significantly lower in sarcoidosis compared to controls (SLPI and hBD-1: p < 0.01). No significant correlations were found between alpha diversity and AMPs.

conclusionsThe pulmonary fungal and bacterial microbiota in sarcoidosis differed from in controls. Lower antimicrobial peptides levels were seen in sarcoidosis, indicating an interaction between the microbiota and the innate immune system. Whether this dysbiosis represents a pathogenic mechanism in sarcoidosis needs to be confirmed in experimental studies. Video Abstract.

Indexed as

beta-DefensinsMicrobiotaSarcoidosisAntimicrobial PeptidesBacteriaBronchoalveolar Lavage FluidDysbiosisHumansLungProtease InhibitorsRNA, Ribosomal, 16SAntimicrobial Peptidesbeta-DefensinsProtease InhibitorsRNA, Ribosomal, 16S

Identifiers

PMID36258251
PMCPMC9580159
OpenAlexW4306743112

What OpenQuestion holds

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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.