Evidence map›Paper›PMID 19541629›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Diminished sarco/endoplasmic reticulum Ca2+ ATPase (SERCA) expression contributes to airway remodelling in bronchial asthma.

Katharina Mahn, Stuart J Hirst, Sun Ying, Mark R Holt, Paul Lavender, Oluwaseun O Ojo, Leonard Siew, David E Simcock, Clare G McVicker, Varsha Kanabar and 9 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 3% 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

87 citing papers in PubMed, 1 synthesis or guideline pooled it, 151 citations in OpenAlex.

  1. A molecular systems architecture of asthma.Frontiers in immunology · 2026
    Pooled it
  2. Article
  3. Review
  4. Article
  5. Review
  6. Bronchomotor tone imbalance evokes airway hyperresponsiveness.Expert review of respiratory medicine · 2024
    Review
  7. Review
  8. Review
  9. Review
  10. Article
  11. Airway Smooth Muscle Regulated by Oxidative Stress in COPD.Antioxidants (Basel, Switzerland) · 2023
    Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Role of airway smooth muscle cell phenotypes in airway tone and obstruction in guinea pig asthma model.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2022
    Article
  17. STIM1 is a core trigger of airway smooth muscle remodeling and hyperresponsiveness in asthma.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  18. Article
  19. Airway smooth muscle function in asthma.Frontiers in physiology · 2022
    Review
  20. Adiponectin and Asthma: Knowns, Unknowns and Controversies.International journal of molecular sciences · 2021
    Review

27 more citing papers are in PubMed but not listed here.

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

19 authors at 4 institutions in 3 countries.

Katharina MahnMedical Research Council and Asthma UK Centre in Allergic Mechanisms of Asthma, King's College London, London SE1 9RT, United Kingdom.
Stuart J Hirst
Sun Ying
Mark R Holt
Paul Lavender
Oluwaseun O Ojo
Leonard Siew
David E Simcock
Clare G McVicker
Varsha Kanabar
Vladimir A Snetkov
Brian J O'Connor
Charlotta Karner
David J Cousins
Patricia Macedo
K Fan Chung
Christopher J Corrigan
Jeremy P T Ward
Tak H Lee
Medical Research Council · GBAsthma UK · GBKing's College London · GBImperial College London · GB

Funding

Medical Research CouncilWellcome TrustWellcome Trust 078075
6 · The paper itself

Abstract

Phenotypic modulation of airway smooth muscle (ASM) is an important feature of airway remodeling in asthma that is characterized by enhanced proliferation and secretion of pro-inflammatory chemokines. These activities are regulated by the concentration of free Ca(2+) in the cytosol ([Ca(2+)](i)). A rise in [Ca(2+)](i) is normalized by rapid reuptake of Ca(2+) into sarcoplasmic reticulum (SR) stores by the sarco/endoplasmic reticulum Ca(2+) (SERCA) pump. We examined whether increased proliferative and secretory responses of ASM from asthmatics result from reduced SERCA expression. ASM cells were cultured from subjects with and without asthma. SERCA expression was evaluated by western blot, immunohistochemistry and real-time PCR. Changes in [Ca(2+)](i), cell spreading, cellular proliferation, and eotaxin-1 release were measured. Compared with control cells from healthy subjects, SERCA2 mRNA and protein expression was reduced in ASM cells from subjects with moderately severe asthma. SERCA2 expression was similarly reduced in ASM in vivo in subjects with moderate/severe asthma. Rises in [Ca(2+)](i) following cell surface receptor-induced SR activation, or inhibition of SERCA-mediated Ca(2+) re-uptake, were attenuated in ASM cells from asthmatics. Likewise, the return to baseline of [Ca](i) after stimulation by bradykinin was delayed by approximately 50% in ASM cells from asthmatics. siRNA-mediated knockdown of SERCA2 in ASM from healthy subjects increased cell spreading, eotaxin-1 release and proliferation. Our findings implicate a deficiency in SERCA2 in ASM in asthma that contributes to its secretory and hyperproliferative phenotype in asthma, and which may play a key role in mechanisms of airway remodeling.

Indexed as

AsthmaBlotting, WesternBronchiCalciumCell MovementCell ProliferationCells, CulturedChemokine CCL11FemaleGene Expression Regulation, EnzymologicHomeostasisHumansImmunohistochemistryInterleukin-13MaleMyocytes, Smooth MuscleCalciumChemokine CCL11Interleukin-13Sarcoplasmic Reticulum Calcium-Transporting ATPases

Identifiers

PMID19541629
PMCPMC2699374
OpenAlexW1969085416

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.