Evidence map›Paper›PMID 26975422›Full record

ArticleRespiratory research2016

Dipeptidyl peptidase-4 is highly expressed in bronchial epithelial cells of untreated asthma and it increases cell proliferation along with fibronectin production in airway constitutive cells.

Taichi Shiobara, Kazuyuki Chibana, Taiji Watanabe, Ryo Arai, Yukiko Horigane, Yusuke Nakamura, Yumeko Hayashi, Yasuo Shimizu, Akihiro Takemasa, Yoshiki Ishii

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

42 citing papers in PubMed, 68 citations in OpenAlex.

  1. Trial
  2. Mechanisms and therapeutic strategies of asthma: from bench to bedside.Signal transduction and targeted therapy · 2026
    Review
  3. Review
  4. Review
  5. Variable DPP4 expression in multiciliated cells of the human nasal epithelium as a determinant for MERS-CoV tropism.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Infection of primary nasal epithelial cells differentiates among lethal and seasonal human coronaviruses.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  12. Phenotypes and Endotypes in Asthma.Advances in experimental medicine and biology · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Emerging Role of Dipeptidyl Peptidase-4 in Autoimmune Disease.Frontiers in immunology · 2022 · on this map
    Review
  18. Article
  19. Relationship betweenZhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2021
    Article
  20. An update on the diagnostic biomarkers for asthma.Journal of family medicine and primary care · 2021
    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

10 authors at 1 institution in 1 country.

Taichi ShiobaraDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Kazuyuki ChibanaDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan. kchibana@dokkyomed.ac.jp.
Taiji WatanabeDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Ryo AraiDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Yukiko HoriganeDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Yusuke NakamuraDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Yumeko HayashiDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Yasuo ShimizuDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Akihiro TakemasaDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Yoshiki IshiiDepartment of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi Mibumachi, Shimotsugagun, Tochigi, 321-0293, Japan.
Dokkyo Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundType 2 helper T-cell cytokines including IL-13 play a central role in the pathogenesis of bronchial asthma (BA). During the course of our research, our attention was drawn to dipeptidyl peptidase-4 (DPP4) as one of the molecules that were induced from bronchial epithelial cells (BECs) by IL-13 stimulation. DPP4 could become a new biomarker or therapeutic target. The aim of this study was to investigate the expression of DPP4 in the asthmatic airway, and its role in the pathophysiology of asthma.

methodsBECs were isolated from patients with inhaled corticosteroid-treated asthma (stBA) and inhaled corticosteroid-naïve asthma (snBA) using bronchoscopy. DPP4 mRNA expression in freshly isolated BECs and primary cultured BECs with or without IL-13 stimulation was investigated by microarray analysis and quantitative real-time PCR (qPCR). The distribution of DPP4 protein was determined by immunostaining of transbronchial lung biopsy specimens from asthma patients. The effect of recombinant human (rh) DPP4 on the proliferation of lung fibroblasts (HFL-1) and bronchial smooth muscle cells (BSMCs) was examined, as well as its effect on the production of fibronectin (FN).

resultsDPP4 mRNA was strongly expressed in freshly isolated BECs in snBA, and its expression was significantly enhanced by IL-13 stimulation. DPP4 mRNA expression in BECs of snBA significantly correlated with exhaled nitric oxide. Biopsied tissues of the asthmatic airway revealed strong expression of DPP4 protein in BECs from snBA subjects. rhDPP4 stimulated the proliferation of HFL-1 and BSMCs, and it also enhanced production of FN from these airway cells.

conclusionDPP4 may be involved in the pathologic features of asthmatic airway inflammation and cell proliferation and FN production.

Indexed as

AsthmaBronchiCell ProliferationCells, CulturedDipeptidyl Peptidase 4FemaleFibroblastsFibronectinsHumansMaleMiddle AgedDipeptidyl Peptidase 4DPP4 protein, humanFibronectinsBronchial asthmaBronchial epithelial cellsDipeptidyl peptidase-4IL-13

Identifiers

PMID26975422
PMCPMC4791890
OpenAlexW2299711638

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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.