Evidence map›Paper›PMID 21477350›Full record

ArticleRespiratory research2011

CD8 positive T cells express IL-17 in patients with chronic obstructive pulmonary disease.

Ying Chang, Jessica Nadigel, Nicholas Boulais, Jean Bourbeau, François Maltais, David H Eidelman, Qutayba Hamid

Abstract read
In one paragraph

Article in Respiratory research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

47 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. The role of CD8 + T lymphocytes in chronic obstructive pulmonary disease: a systematic review.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2021
    Pooled it
  3. The elastin peptide VGVAPG increases CD4Respiratory research · 2021
    Trial
  4. Trial
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  8. Article
  9. Article
  10. Article
  11. Review
  12. Downregulation ofeLife · 2024
    Article
  13. Downregulation ofbioRxiv : the preprint server for biology · 2024
    Article
  14. Article
  15. Article
  16. The role of Th17 cells: explanation of relationship between periodontitis and COPD?Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2022
    Review
  17. Article
  18. IL-17A Promotes Epithelial ADAM9 Expression in Cigarette Smoke-Related COPD.International journal of chronic obstructive pulmonary disease · 2022
    Article
  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.

Ying ChangMeakins-Christie Laboratories and Respiratory Division, Department of Medicine McGill University, 3626 rue St, Urbain, Montreal, QC, H2X 2P2 Canada.
Jessica Nadigel
Nicholas Boulais
Jean Bourbeau
François Maltais
David H Eidelman
Qutayba Hamid

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic obstructive pulmonary disease (COPD) is a progressive and irreversible chronic inflammatory disease of the lung. The nature of the immune reaction in COPD raises the possibility that IL-17 and related cytokines may contribute to this disorder. This study analyzed the expression of IL-17A and IL-17F as well as the phenotype of cells producing them in bronchial biopsies from COPD patients.

methodsBronchoscopic biopsies of the airway were obtained from 16 COPD subjects (GOLD stage 1-4) and 15 control subjects. Paraffin sections were used for the investigation of IL-17A and IL-17F expression in the airways by immunohistochemistry, and frozen sections were used for the immunofluorescence double staining of IL-17A or IL-17F paired with CD4 or CD8. In order to confirm the expression of IL-17A and IL-17F at the mRNA level, a quantitative RT-PCR was performed on the total mRNA extracted from entire section or CD8 positive cells selected by laser capture microdissection.

resultsIL-17F immunoreactivity was significantly higher in the bronchial biopsies of COPD patients compared to control subjects (P < 0.0001). In the submucosa, the absolute number of both IL-17A and IL-17F positive cells was higher in COPD patients (P < 0.0001). After adjusting for the total number of cells in the submucosa, we still found that more cells were positive for both IL-17A (P < 0.0001) and IL-17F (P < 0.0001) in COPD patients compared to controls. The mRNA expression of IL-17A and IL-17F in airways of COPD patients was confirmed by RT-PCR. The expression of IL-17A and IL-17F was co-localized with not only CD4 but also CD8, which was further confirmed by RT-PCR on laser capture microdissection selected CD8 positive cells.

conclusionThese findings support the notion that Th17 cytokines could play important roles in the pathogenesis of COPD, raising the possibility of using this mechanism as the basis for novel therapeutic approaches.

Indexed as

AdultBiopsyBronchiBronchoscopyCase-Control StudiesCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesFemaleHumansImmunohistochemistryImmunophenotypingInterleukin-17LasersMaleMicrodissectionMiddle AgedIL17A protein, humanIL17F protein, humanInterleukin-17RNA, Messenger

Identifiers

PMID21477350
PMCPMC3082241

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Registered trials

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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.