Are oxidative stress biomarkers and respiratory muscles strength associated with COPD-related sarcopenia in older adults?

Vanessa Kelly da Silva Lage, Fabiana Angélica de Paula, Jousielle Márcia dos Santos, Henrique Silveira Costa, Guilherme Pinto da Silva, Liliana Pereira Lima, Joyce Noelly Vítor Santos, Hellen Cristina de Almeida, Pedro Henrique Scheidt Figueiredo, Mario Bernardo-Filho, Redha Taiar, Antônio Lúcio Teixeira, Ana Cristina Rodrigues Lacerda, Vanessa Amaral Mendonça

Producción científica: Articlerevisión exhaustiva

8 Citas (Scopus)


Background: Patients with chronic obstructive pulmonary disease (COPD) often present with sarcopenia, a condition marked by the loss in quality and quantity of muscle mass that can affect the strength of respiratory muscles. COPD and sarcopenia are also independently associated with oxidative stress. This study aimed to investigate whether oxidative stress biomarkers and respiratory muscle strength are associated with sarcopenia in COPD patients. Methods: In a cross-sectional study, 86 elderly subjects, including subjects with and without COPD were assessed for body composition, maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) and oxidative stress parameters [substances reactive to thiobarbituric acid (TBARS), ferric reducing ability of plasma (FRAP), superoxide dismutase (SOD), and catalase (CAT)]. Results: The sample was mainly composed by males (72.1%) and eutrophic subjects. COPD-related sarcopenia was evidenced in 51.1% (22/43) of subjects with COPD. The highest TBARS and CAT, and lower MIP and MEP were associated with a high probability of having COPD-related sarcopenia. In the multivariate analysis, TBARS (OR: 4.89, 95% CI 1.52 to 15.54, p = 0.006), CAT (OR: 1.22, 95% CI 1.03 to 1.45, p = 0.020) and MEP (OR: 0.97, 95% CI 0.95 to 0.99, p = 0.020) were independent determinants of COPD-related sarcopenia. Conclusion: The increase in oxidative stress-related factors and the reduction of respiratory muscle strength are associated with COPD-related sarcopenia.

Idioma originalEnglish (US)
Número de artículo111630
PublicaciónExperimental Gerontology
EstadoPublished - ene 2022
Publicado de forma externa

ASJC Scopus subject areas

  • Biochemistry
  • Aging
  • Molecular Biology
  • Genetics
  • Endocrinology
  • Cell Biology


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