Cited by 133Exercise and Physiological ResponsesChronic Obstructive Pulmonary Disease (COPD) ResearchAntioxidant Activity and Oxidative Stress

Chronic Endurance Exercise Induces Quadriceps Nitrosative Stress in Patients with Severe COPD

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Barreiro, E, Rabinovich, R, Marin-Corral, J, Barbera, J A, Gea, J, Roca, J·2008·Thorax

Abstract

BACKGROUND: Although exercise training has beneficial effects on skeletal muscle bioenergetics and exercise performance in patients with severe chronic obstructive pulmonary disease (COPD), it may also be associated with increased quadriceps oxidative and nitrosative stress. The aim of this study was to explore quadriceps oxidative and nitrosative stress in patients with severe COPD, both before and after a 3 week endurance exercise programme, and to identify the nature of the oxidatively modified proteins. METHODS: Reactive carbonyls, hydroxynonenal-protein adducts, antioxidant enzymes, nitric oxide synthase (NOS) and 3-nitrotyrosine levels were determined in the quadriceps (pre- and post-exercise) of 15 patients with severe COPD and seven healthy controls using immunoblotting (one- and two-dimensional electrophoresis), activity assays and mass spectrometry. RESULTS: At baseline, muscle levels of reactive carbonyls, which were negatively associated with muscle strength and exercise tolerance, were significantly higher in patients than in controls. Moreover, baseline hydroxynonenal-protein adducts, superoxide dismutase activity, inducible NOS and 3-nitrotyrosine immunoreactivity levels were also significantly increased in the quadriceps of patients compared with controls. In patients, chronic exercise induced a significant rise in inducible NOS levels and a fourfold increase in protein nitration. Chronic endurance exercise induced tyrosine nitration of muscle enolase 3beta, aldolase A, triosephosphate isomerase, creatine kinase, carbonic anhydrase III, myoglobin and uracil DNA glycosylase in the quadriceps of patients, while contractile protein alpha-1 actin was nitrated only in patients exhibiting muscle loss (post hoc analysis). Superoxide dismutase activity increased after the exercise programme only in controls. CONCLUSIONS: In severe COPD, chronic endurance exercise induces increased tyrosine nitration of quadriceps proteins involved in glycolysis, energy distribution, carbon dioxide hydration, muscle oxygen transfer, DNA repair and contractile function in patients exhibiting systemic effects of the disease.

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  • Increased Mn-superoxide dismutase (SOD) and Cu-Zn-SOD protein levels have been demonstrated in COPD quadriceps, whereas unchanged SOD content and decreased SOD activity have been reported in another study, and unchanged MnSOD, Cu/ZnSOD, and catalase expressions have been found in cultured COPD myoblasts and myotubes.

    “For example, increased Mn-superoxide dismutase (SOD) and Cu-Zn-SOD protein levels have been demonstrated in the quadriceps [118,127], whereas unchanged SOD content and decreased SOD activity have been reported in another study [122], and unchanged MnSOD, Cu/ZnSOD, and catalase expressions in cultured COPD myoblasts and myotubes have been found [128].”

    From Main Pathogenic Mechanisms and Recent Advances in COPD Peripheral Skeletal Muscle Wasting (2023) · cites this paper as [127]

    The Muscle redox balance section (page unavailable) reports higher baseline quadriceps SOD activity in patients with COPD than in controls. It does not report increased protein levels of Mn-SOD or Cu-Zn-SOD, which is the specific finding attributed to this paper. The other findings in the citing sentence have separate citations and are not assessed here. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • In COPD, the protective mechanism of increasing antioxidants in response to oxidative stress seems defective, although contradictory data have been reported.

    “Skeletal muscle tissue usually compensates the excessive oxidative stress (induced for example by exercise training) by increasing the levels of antioxidants [122,127], but in COPD, this protective mechanism seems to be defective, although contradictory data have been reported.”

    From Main Pathogenic Mechanisms and Recent Advances in COPD Peripheral Skeletal Muscle Wasting (2023) · cites this paper as [127]

    The Muscle oxidative stress section reports that exercise increased antioxidant SOD activity in healthy controls but not in patients with severe COPD, supporting a defective exercise-induced response. The Muscle redox balance section also reports higher baseline SOD activity in patients, but the paper does not identify this or other findings as contradictory reports. Its direct evidence is limited to the exercise response studied. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Several studies have found increased lipofuscin accumulation in COPD quadriceps and higher levels of 4-HNE in quadriceps tissue, as well as in cultured myotubes from COPD patients.

    “For example, several studies have found an increased lipofuscin accumulation in COPD quadriceps [126] and higher levels of hydroxy-2-nonenal (4-HNE) in quadriceps tissue [87,127], as well as in cultured myotubes from COPD patients [128].”

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Authors
Barreiro, E., Rabinovich, R., Marin-Corral, J., Barbera, J. A., Gea, J., & Roca, J.
Affiliations
  • Municipal Institute for Medical Research (ES)
  • Consorci Institut D'Investigacions Biomediques August Pi I Sunyer (ES)
  • Universitat Autònoma de Barcelona (ES)
Corresponding author
Barreiro, E
Venue
Thorax
Publisher
BMJ
Published
2008-10-03
Volume
64
Issue
1
Pages
13-19
ISSN
0040-6376 (ISSN-L)
OpenAlex
W2123848794
Cited by
133
References
3
Citations by year
2026: 3 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 5 · 2018: 7 · 2017: 7 · 2016: 14 · 2015: 9 · 2014: 15 · 2013: 12 · 2012: 14
FWCI
12.48
Type
journal article
Language
en
Open access
Locations
  • Thorax (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
Instituto de Salud Carlos III
Topics
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
chronic obstructive pulmonary disease, endurance training, nitrosative stress, oxidative stress, quadriceps, tyrosine nitration, nitrotyrosine, inducible nitric oxide synthase, superoxide dismutase, muscle mass loss, exercise tolerance, skeletal muscle
MeSH terms
Humans, Male, Middle Aged, Tyrosine, Exercise, Nitrosation, Case-Control Studies, Oxidative Stress, Pulmonary Disease, Chronic Obstructive, Quadriceps Muscle, Nitric Oxide Synthase Type II

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