Evidence map›Paper›PMID 33317530›Full record

ArticleRespiratory research2020

Airway regulatory T cells are decreased in COPD with a rapid decline in lung function.

Jonas Eriksson Ström, Jamshid Pourazar, Robert Linder, Anders Blomberg, Anne Lindberg, Anders Bucht, Annelie F Behndig

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 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 18% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Potential Benefits of Gut Microbiota Modulation in Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2026
    Article
  5. Article
  6. Distribution of two CD4Scientific reports · 2025
    Article
  7. Article
  8. Role of Regulatory T Cells in Pulmonary Ageing and COPD Development.International journal of molecular sciences · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
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  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 2 institutions in 1 country.

Jonas Eriksson StrömDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden. jonas.eriksson.strom@umu.se.ORCID http://orcid.org/0000-0002-3434-988X
Jamshid PourazarDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden.
Robert LinderDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden.
Anders BlombergDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden.
Anne LindbergDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden.
Anders BuchtDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden.
Annelie F BehndigDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, 90187, Umeå, Sweden.
Umeå University · SESwedish Defence Research Agency · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDifferences in the expression of regulatory T cells (Tregs) have been suggested to explain why some smokers develop COPD and some do not. Upregulation of Tregs in response to smoking would restrain airway inflammation and thus the development of COPD; while the absense of such upregulation would over time lead to chronic inflammation and COPD. We hypothesized that-among COPD patients-the same mechanism would affect rate of decline in lung function; specifically, that a decreased expression of Tregs would be associated with a more rapid decline in FEV

methodsBronchoscopy with BAL was performed in 52 subjects recruited from the longitudinal OLIN COPD study; 12 with COPD and a rapid decline in lung function (loss of FEV

resultsThe proportions of Tregs with regulatory function (FoxP3

conclusionsCOPD subjects with a rapid decline in lung function had lower proportions of T cells with regulatory function in BAL fluid, suggesting that an inability to suppress the inflammatory response following smoking might lead to a more rapid decline in FEV

Indexed as

AgedBronchoscopyCase-Control StudiesCD4 Lymphocyte CountCross-Sectional StudiesDisease ProgressionFemaleForced Expiratory VolumeForkhead Transcription FactorsHumansImmunophenotypingInterleukin-2 Receptor alpha SubunitLungMaleMiddle AgedPhenotypeForkhead Transcription FactorsFOXP3 protein, humanIL2RA protein, humanInterleukin-2 Receptor alpha SubunitBronchoalveolar lavageChronic obstructive pulmonary diseaseDisease mechanismsLung function declineRegulatory T cellsSmoking habits

Identifiers

PMID33317530
PMCPMC7734742
OpenAlexW3111490709

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.