Evidence map›Paper›PMID 33046036›Full record

ArticleRespiratory research2020

Mitochondrial dysfunction in airways and quadriceps muscle of patients with chronic obstructive pulmonary disease.

Gulam Haji, Coen H Wiegman, Charalambos Michaeloudes, Mehul S Patel, Katrina Curtis, Pankaj Bhavsar, Michael I Polkey, Ian M Adcock, Kian Fan Chung, COPDMAP consortium

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
4.2field-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

39 citing papers in PubMed, 55 citations in OpenAlex.

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  11. Mechanisms and markers of lung ageing in health and disease.European respiratory review : an official journal of the European Respiratory Society · 2025
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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

10 authors at 3 institutions in 2 countries.

Gulam HajiAirways Disease, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, SW3 6LY, UK.
Coen H WiegmanAirways Disease, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, SW3 6LY, UK. c.wiegman@imperial.ac.uk.ORCID http://orcid.org/0000-0001-9161-0581
Charalambos MichaeloudesAirways Disease, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, SW3 6LY, UK.
Mehul S PatelRoyal Brompton & Harefield NHS Foundation Trust, London, UK.
Katrina CurtisRoyal Brompton & Harefield NHS Foundation Trust, London, UK.
Pankaj BhavsarAirways Disease, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, SW3 6LY, UK.
Michael I PolkeyRoyal Brompton & Harefield NHS Foundation Trust, London, UK.
Ian M AdcockAirways Disease, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, SW3 6LY, UK.
Kian Fan ChungAirways Disease, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, SW3 6LY, UK.
COPDMAP consortium
Royal Brompton & Harefield NHS Foundation Trust · GBImperial College London · GBLung Institute · US

Funding

MRC-ABPI COPD-MAP consortium G1001367/1Research Councils UK (GB) EP/E500641/1
6 · The paper itself

Abstract

backgroundMitochondrial damage and dysfunction have been reported in airway and quadriceps muscle cells of patients with chronic obstructive pulmonary disease (COPD). We determined the concomitance of mitochondrial dysfunction in these cells in COPD.

methodsBronchial biopsies were obtained from never- and ex-smoker volunteers and COPD patients (GOLD Grade 2) and quadriceps muscle biopsies from the same volunteers in addition to COPD patients at GOLD Grade 3/4 for measurement of mitochondrial function.

resultsDecreased mitochondrial membrane potential (ΔΨm), increased mitochondrial reactive oxygen species (mtROS) and decreased superoxide dismutase 2 (SOD2) levels were observed in mitochondria isolated from bronchial biopsies from Grade 2 patients compared to healthy never- and ex-smokers. There was a significant correlation between ΔΨm and FEV

conclusionsMitochondrial dysfunction in the airways, but not in quadriceps muscle, is associated with airflow obstruction and exercise capacity in Grade 2 COPD. Oxidative stress-induced mitochondrial dysfunction in the quadriceps may result from similar disease processes occurring in the lungs.

Indexed as

AgedBronchiFemaleHumansMaleMembrane Potential, MitochondrialMiddle AgedMitochondriaOxidative StressPulmonary Disease, Chronic ObstructiveQuadriceps MuscleReactive Oxygen SpeciesReactive Oxygen SpeciesAirwaysCOPDMitochondriaOxidative stressQuadriceps

Identifiers

PMID33046036
PMCPMC7552476
OpenAlexW3092447922

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.