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Updated: Dec 18, 2025
Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults
Published on: April 22, 2022
NOVEL antioxidant and oxidant biomarkers related to sarcopenia in COPD
Walter Sepúlveda-Loyola1, Larissa Araújo de Castro1, Andressa Keiko Matsumoto2
1Program of Masters and Doctoral degree in Rehabilitation Sciences, Londrina State University (UEL) and University North of Paraná (UNOPAR), Londrina, Brazil.
Background:
The relation between oxidative stress (OS) and sarcopenia in COPD remains unknown.
Objective:
To analyze OS levels and its association with sarcopenia in COPD.
Methods:
Thirty-nine individuals with COPD (69±7years; 41%female) and thirty-five for the control group (69±7years; 43%female) were included. Advanced oxidation protein products (AOPP), paraoxonase-1 (PON1), superoxide dismutase activity (SOD), catalase dismutase activity (CAT), sulfhydryl group (SH), nitric oxide metabolites (NOX), total radical trapping antioxidant parameter (TRAP) were analysed. OS markers were correlated with handgrip and quadriceps strength, gait speed, skeletal muscle mass index, fat-free mass index, maximum inspiratory and expiratory pressure. European criteria were used to identify sarcopenia.
Results:
In COPD, antioxidant capacity was correlated with muscle mass and strength (r from 0.5 to 0.64) P<0.05 for all. TRAP≤ 850 μM/trolox and AOPP≤65 μM/l were associated with sarcopenia (OR:8.3; 95% CI: 1.4-49.6 and OR:14; 95%CI: 2.2-87.1, respectively; P<0.05 for both).
Conclusion:
OS is associated with sarcopenia in COPD.
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