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de Camargo, Anderson Alves; de Castro, Rejane Agnelo Silva; Vieira, Rodolfo P.; Oliveira-Júnior, Manoel Carneiro; Araujo, Amanda Aparecida de; De Angelis, Kátia; Rached, Samia Zahi; Athanazio, Rodrigo Abensur; Stelmach, Rafael; Corso, Simone Dal
Clinics, 01/2021, Volume: 76Journal Article
To compare the inflammatory and oxidative stress (OS) states of adults with bronchiectasis with those of healthy controls and correlate inflammatory and OS levels with lung function and physical capacity. This study used a cross-sectional design. Seventy-four adults with bronchiectasis (age: 49±15 years, forced expiratory volume in 1 second FEV1: 52.5±25.6%) and 42 healthy controls (age: 44±17 years, FEV1: 95.9±14.0%) performed cardiopulmonary exercise tests and incremental shuttle walking tests. Their physical activity in daily life, inflammatory cytokine, and antioxidant levels in plasma were measured. Compared to that of the controls, the levels of interleukin (IL)-6 (p<0.001), IL-10 (p<0.001), carbonylated proteins (p=0.001), and superoxide anions (p=0.046) were significantly increased in adults with bronchiectasis. Catalase activity was also reduced in this group (p<0.001). The inflammatory markers IL-1β, IL-6, and tumor necrosis factor-α correlated negatively with aerobic capacity (r=-0.408, r=-0.308, and r=-0.207, respectively). We observed similar correlations with OS markers (thiobarbituric acid and carbonyls; r=-0.290 and r=0.379, respectively), and these markers also significantly correlated with the aerobic capacity. Adults with bronchiectasis presented an increased systemic inflammatory response that correlated negatively with physical capacity.
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