Evidence map›Paper›PMID 25945802›Full record

ArticleAmerican journal of respiratory cell and molecular biology2015

Brain-Derived Neurotrophic Factor Expression in Asthma. Association with Severity and Type 2 Inflammatory Processes.

Tetsuya Watanabe, Merritt L Fajt, John B Trudeau, Nipasiri Voraphani, Haizhen Hu, Xiuxia Zhou, Fernando Holguin, Sally E Wenzel

Open access · greenAbstract read
In one paragraph

Article in American journal of respiratory cell and molecular biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.7field-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

33 citing papers in PubMed, 55 citations in OpenAlex.

  1. Trial
  2. Neuroplasticity and neuroimmune interactions with type 2 inflammation in asthma.European respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  3. Aging, brain-derived neurotrophic factor, and allergen-induced pulmonary responses in mice.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  4. Article
  5. Article
  6. Lung dopaminergic nerves facilitate the establishment of TThe Journal of allergy and clinical immunology · 2023
    Article
  7. Neuronal-Immune Cell Units in Allergic Inflammation in the Nose.International journal of molecular sciences · 2022
    Review
  8. Article
  9. Article
  10. Effect of BDNF on airway inflammation in a rat model of COPD.Experimental and therapeutic medicine · 2021
    Article
  11. Review
  12. Review
  13. Article
  14. Brain-Derived Neurotrophic Factor Inhibits the Wound-Healing and Cell Proliferative Ability of Human Airway Epithelial Cells in Asthmatic Children.Medical science monitor : international medical journal of experimental and clinical research · 2020
    Article
  15. Mechanisms of non-type 2 asthma.Current opinion in immunology · 2020
    Review
  16. Cholinergic neuroplasticity in asthma driven by TrkB signaling.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
    Article
  17. Article
  18. Airway Innervation and Plasticity in Asthma.Physiology (Bethesda, Md.) · 2019
    Review
  19. Smooth muscle brain-derived neurotrophic factor contributes to airway hyperreactivity in a mouse model of allergic asthma.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019
    Article
  20. The protective role of Schwann cells in bladder smooth muscle cell fibrosis.International journal of clinical and experimental pathology · 2019
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Tetsuya WatanabeAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
Merritt L FajtAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.ORCID http://orcid.org/0000-0002-9143-7712
John B TrudeauAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
Nipasiri VoraphaniAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
Haizhen HuAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
Xiuxia ZhouAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
Fernando HolguinAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
Sally E WenzelAsthma Institute at University of Pittsburgh Medical Center, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
University of Pittsburgh Medical Center · US

Funding

UNIVERSITY OF PITTSBURGH CLINICAL AND TRANSLATIONAL SCIENCE INSTITUTE: BPCAUL1RR024153 · NCRR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2006 to 2011
$73.9M
Redox-Derived Pulmonary Anti-Inflammatory MediatorsR01HL064937 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI FREEMAN, BRUCE ALAN · 2000 to 2015
$5.6M
TGF-BETA AND 15 HETE IN POORLY STEROID RESPONSIVE ASTHMAR01AI040600 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WENZEL, SALLY E · 1997 to 2014
$4.8M
Implications and Stability of Clinical and Molecular Phenotypes of Severe AsthmaU10HL109152 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WENZEL, SALLY E · 2011 to 2016
$3.9M
NCRR NIH HHS RR024153NCRR NIH HHS UL1 RR024153NHLBI NIH HHS HL064937NHLBI NIH HHS HL109152NHLBI NIH HHS R01 HL064937NHLBI NIH HHS U10 HL109152NIAID NIH HHS AI040600NIAID NIH HHS R01 AI040600
6 · The paper itself

Abstract

Brain-derived neurotrophic factor (BDNF), a member of the neurotrophin family, exists in several isoforms, which differentially impacts neuronal and immune cell survival and differentiation. The role of BDNF and its isoforms in asthma remains unclear. The objectives of this study were to compare the BDNF protein isoforms and specific splice variant expression in sputum and bronchoscopic samples from healthy control subjects and participants with asthma, and to relate these changes to findings in IL-13-stimulated human airway epithelial cells. Sputum and bronchoscopic samples from healthy control subjects and participants with asthma were evaluated for BDNF protein (ELISA and Western blot) and BDNF mRNA (gel and quantitative real-time PCR) in relation to asthma severity and type 2 inflammatory processes. BDNF mRNA was measured in cultured primary human airway epithelial cells after IL-13 stimulation. Total BDNF protein differed among the groups, and its mature isoform was significantly higher in sputum from subjects with severe asthma compared with healthy control subjects (overall P = 0.008, P = 0.027, respectively). Total BDNF was higher in those with elevated fractional exhaled nitric oxide and sputum eosinophilia. In vitro, IL-13 increased BDNF exon VIb splice variant and the ratio to BDNF common exon IX mRNA (P < 0.001, P = 0.003, respectively). Epithelial brushing exon VIb mRNA and total BDNF protein differed among the groups and were higher in subjects with severe asthma than in healthy control subjects (overall P = 0.01, P = 0.02, respectively). The mature BDNF isoform and the exon VIb splice variant are increased in human asthmatic airways. The in vitro increase in response to IL-13 suggests that type 2 cytokines regulate BDNF levels and activity in asthma.

Indexed as

AdultAsthmaBrain-Derived Neurotrophic FactorBronchiCells, CulturedExonsFemaleGene ExpressionHumansInterleukin-13MaleMiddle AgedProtein IsoformsRNA, MessengerRNA StabilitySeverity of Illness IndexBDNF protein, humanBrain-Derived Neurotrophic FactorIL13 protein, humanInterleukin-13Protein IsoformsRNA, Messengerasthmabrain-derived neurotrophic factorepithelial cellsIL-13sputum

Identifiers

PMID25945802
PMCPMC4742942
OpenAlexW2106602435

What OpenQuestion holds

Textmetadata
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.