Evidence map›Paper›PMID 32099415›Full record

ArticleJournal of asthma and allergy2020

Sputum IL-26 Is Overexpressed in Severe Asthma and Induces Proinflammatory Cytokine Production and Th17 Cell Generation: A Case-Control Study of Women.

Sabrine Louhaichi, Mona Mlika, Besma Hamdi, Kamel Hamzaoui, Agnès Hamzaoui

Open access · goldAbstract read
In one paragraph

Article in Journal of asthma and allergy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 32 citations in OpenAlex.

  1. Multifaceted Roles of IL-26 in Physiological and Pathological Conditions.International journal of molecular sciences · 2025
    Review
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  9. Interleukin 26 Induces Macrophage IL-9 Expression in Rheumatoid Arthritis.International journal of molecular sciences · 2023
    Article
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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

5 authors at 1 institution in 1 country.

Sabrine LouhaichiResearch Laboratory 19SP02 "Chronic Pulmonary Pathologies: From Genome to Management", Abderrahman Mami Hospital, Ariana, Tunisia.ORCID 0000-0002-2072-3308
Mona MlikaMedicine Faculty of Tunis, Department of Basic Sciences, Tunis El Manar University, Tunis, Tunisia.ORCID 0000-0003-2470-0012
Besma HamdiResearch Laboratory 19SP02 "Chronic Pulmonary Pathologies: From Genome to Management", Abderrahman Mami Hospital, Ariana, Tunisia.ORCID 0000-0003-0343-7673
Kamel HamzaouiResearch Laboratory 19SP02 "Chronic Pulmonary Pathologies: From Genome to Management", Abderrahman Mami Hospital, Ariana, Tunisia.ORCID 0000-0001-9149-6934
Agnès HamzaouiResearch Laboratory 19SP02 "Chronic Pulmonary Pathologies: From Genome to Management", Abderrahman Mami Hospital, Ariana, Tunisia.
Abderrahmane Mami Hospital · TN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAsthma inflammation is a complex pathway involving numerous mediators. Interleukin-26 (IL-26), a member of the IL-10 cytokine family, is abundant in human airways and induces the production of proinflammatory cytokines. Our aim was to investigate the possible role of IL-26 in severe asthma. We analysed the expression of IL-26 in severe asthma both in peripheral blood and induced sputum. PATIENTS AND

methodsA total of 50 adult women with severe asthma were recruited and compared to 30 healthy controls (HC). Serum and sputum fluid (SF) levels of IL-26 and IL-17 were defined by ELISA. IL-26 mRNA expression and IL-26 protein were analysed using RT-PCR and Western blot. In vitro, we studied the effect of recombinant IL-26 (rIL-26) and SF-IL-26 on cultured CD4

resultsConcentrations of IL-26 are higher in serum and induced sputum of asthmatic patients than in HC. Moreover, IL-26 protein and mRNA expression were significantly elevated in asthma sputum cells compared to PBMCs. We observed a positive correlation between body mass index (BMI) and sputum fluid IL-26, while the correlation between IL-26 and lung function tests (FEV1% and FEV1/FVC ratio) was negative. IL-17A was highly expressed in SF and correlated positively with IL-26. In patients' sputum IL-26 and IL-17A were significantly associated with neutrophils. Stimulation of cultured CD4

conclusionThese findings show that IL-26 is highly produced in asthmatic sputum, induces pro-inflammatory cytokine secretion by monocytes/macrophages, and favours Th17 cell generation. IL-26 thereby appears as a novel pro-inflammatory cytokine, produced locally in the airways that may constitute a promising target to treat asthma inflammatory process.

Indexed as

asthmaIL-17AIL-1βIL-26IL-6induced sputum

Identifiers

PMID32099415
PMCPMC7006858
OpenAlexW3003524341

What Socratic holds

Textmetadata
LicenceCC BY-NC
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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 Socratic graph.