Details

Autor(en) / Beteiligte

• Wadley, Alex J.
• van Zanten, Jet J. C. S. Veldhuijzen
• Stavropoulos-Kalinoglou, Antonios
• Metsios, George S.
• Smith, Jacqueline P.
• Kitas, George D.
• Aldred, Sarah

Titel

Three months of moderate-intensity exercise reduced plasma 3-nitrotyrosine in rheumatoid arthritis patients

Ist Teil von

• European journal of applied physiology, 2014-07, Vol.114 (7), p.1483-1492

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• Purpose Rheumatoid arthritis (RA) patients display high levels of oxidative stress. Transient exercise-induced increases in oxidative stress are thought to be adaptive in healthy populations. This study investigated the effect of exercise on markers of oxidative stress in RA, following acute exercise and a period of exercise training. Methods Acute exercise study: RA patients ( N  = 12, age: 56 ± 11) undertook a bout of exercise (30–40 min, 70 % VO 2MAX ), and blood samples were taken before and after exercise to assess markers of oxidative stress. Training study: RA patients ( N  = 19, age: 56 ± 10) were randomised into either a control or exercise group, who undertook 3 exercise sessions per week (30–40 min @70 % VO 2MAX ) for 3 months. Plasma markers of oxidative stress (protein carbonyls (PC), lipid hydroperoxides (LOOH), 3-nitrotyrosine (3-NT), total antioxidant capacity (TAC) and catalase (CAT) activity), inflammation (interleukin-8 (IL-8) and C-reactive protein (CRP)) and nitric oxide metabolites (NOx) were assessed before and after training. Results Acute exercise study: Protein carbonyls (PC) (+18 %) and NOx (+27 %) were significantly increased following exercise. Training study: 3-nitrotyrosine (3-NT) decreased (2.18 ± 1.78 to 1.10 ± 0.93 μM) in the exercise group only, alongside increases in aerobic fitness (24.45 ± 4.98 to 27.10 ± 4.51 ml/kg/min −1 ) and reductions in disease activity score (DAS: 3.47 ± 1.17 to 2.88 ± 0.76). PC, LOOH, TAC, IL-8, CRP and NOx concentrations, and CAT activity were unchanged in both groups. Conclusions Aerobic exercise training did not increase markers of oxidative stress in RA patients. 3-Nitrotyrosine and disease activity were decreased following exercise training.