Evidence map›Paper›PMID 29692608›Full record

ArticleInternational journal of chronic obstructive pulmonary disease

Increased matrix metalloproteinase-9 to tissue inhibitor of metalloproteinase-1 ratio in smokers with airway hyperresponsiveness and accelerated lung function decline.

Chun-Yu Lo, Hung-Yu Huang, Jung-Ru He, Tzu-Ting Huang, Chih-Chen Heh, Te-Fang Sheng, Kian Fan Chung, Han-Pin Kuo, Chun-Hua Wang

Open access · goldAbstract read
In one paragraph

Article in International journal of chronic obstructive pulmonary disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. TIMP-1 and its potential diagnostic and prognostic value in pulmonary diseases.Chinese medical journal pulmonary and critical care medicine · 2023
    Article
  9. Matrix Metalloproteinases in Chronic Obstructive Pulmonary Disease.International journal of molecular sciences · 2023
    Review
  10. A2M Serves as Promising Biomarker for Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2023
    Article
  11. Article
  12. Article
  13. Alpha-1 Antitrypsin Deficiency: Have We Got the Right Proteinase?Chronic obstructive pulmonary diseases (Miami, Fla.) · 2020
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
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

9 authors at 1 institution in 2 countries.

Chun-Yu LoDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Hung-Yu HuangDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Jung-Ru HeDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Tzu-Ting HuangDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Chih-Chen HehDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Te-Fang ShengDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Kian Fan ChungAirways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK.
Han-Pin KuoDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Chun-Hua WangDepartment of Thoracic Medicine, Chang Gung Medical Foundation, College of Medicine, Chang Gung University, Taipei, Taiwan.
Chang Gung University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAirway hyperresponsiveness (AHR) is associated with airway inflammation and a rapid decline in lung function and is a predictor of future risk of COPD among smokers. Alveolar macrophages (AMs) from patients with COPD release a greater amount of matrix metalloproteinase (MMP)-9. We hypothesized that the imbalance between MMP-9 and tissue inhibitor of metalloproteinase-1 (TIMP-1) is related to AHR in smokers. PATIENTS AND

methodsHealthy smokers with AHR (AHR + S) or smokers without AHR (AHR - S; divided according to a methacholine challenge test) and nonsmokers without AHR (AHR - NS) were enrolled. Spirometry was performed during enrollment and repeated after 5 years. Initially, AMs recovered from bronchoalveolar lavage (BAL) fluid were cultured in the presence of p38 mitogen-activated protein kinase (MAPK) inhibitor (SB203580), MAPK kinase (MEK) 1/2 (the MEK of extracellular signal-regulated kinase [ERK] inhibitor, PD98059), or medium alone for 24 h. The release of MMP-9 and TIMP-1 in culture supernatants was measured by enzyme-linked immunosorbent assay.

resultsA greater reduction in forced expiratory volume in 1 s (FEV

conclusionAMs of AHR + NS produce excessive MMP-9 over TIMP-1, which may be a predictor of the development of airway obstruction. Inhibition of p38 MAPK and ERK suppresses the generation of MMP-9 by AMs from smokers.

Indexed as

SmokersAdultAgedBiomarkersBronchial Provocation TestsCells, CulturedDisease ProgressionExtracellular Signal-Regulated MAP KinasesFemaleForced Expiratory VolumeHumansLungMacrophages, AlveolarMaleMatrix Metalloproteinase 9Middle AgedBiomarkersExtracellular Signal-Regulated MAP KinasesMatrix Metalloproteinase 9MMP9 protein, humanp38 Mitogen-Activated Protein KinasesProtein Kinase InhibitorsTIMP1 protein, humanTissue Inhibitor of Metalloproteinase-1airway hyperresponsivenessalveolar macrophageextracellular signal-regulated kinasematrix metalloproteinase-9p38 mitogen-activated protein kinasesmokingtissue inhibitor of metalloproteinase-1

Identifiers

PMID29692608
PMCPMC5903494
OpenAlexW2797197335

What OpenQuestion holds

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LicenceCC BY-NC
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.