systemic inflammation after inspiratory loading in chronic obstructive pulmonary disease
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ID: 216390
2008
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Abstract
Antonia Fuster, Jaume Sauleda, Ernest Sala, Bernardí Barceló1, Jaume Pons2, Miguel Carrera, Aina Noguera1, Bernat Togores, Alvar GN AgustíServeis de Pneumologia, 1Analisis Clinics, and 2Inmunología, Hospital Universitari Son Dureta, Fundación Caubet-Cimera and CIBER Enfermedades Respiratorias, Mallorca, SpainObjective: Patients with chronic obstructive pulmonary disease (COPD) present systemic inflammation. Strenuous resistive breathing induces systemic inflammation in healthy subjects. We hypothesized that the increased respiratory load that characterizes COPD can contribute to systemic inflammation in these patients.Patients and methods: To test this hypothesis, we compared leukocyte numbers and levels of circulating cytokines (tumor necrosis factor alpha [TNFα], interleukin-1β [IL-1β], IL-6, IL-8, and IL-10), before and 1 hour after maximal incremental inspiratory loading in 13 patients with stable COPD (forced expiratory volume in one second [FEV1] 29 ± 2.5% ref) and in 8 healthy sedentary subjects (FEV1 98 ± 5% ref).Results: We found that: (1) at baseline, patients with COPD showed higher leukocyte counts and IL-8 levels than controls (p < 0.01); and, (2) one hour after maximal inspiratory loading these values were unchanged, except for IL-10, which increased in controls (p < 0.05) but not in patients with COPD.Conclusions: This study confirms the presence of systemic inflammation in COPD, shows that maximal inspiratory loading does not increase the levels of pro-inflammatory cytokines (IL-1β, IL-8) in COPD patients or controls, but suggests that the former may be unable to mount an appropriate systemic anti-inflammatory response to exercise.Keywords: COPD, endurance, exercise, IL-10, respiratory muscles, systemic inflammation
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fuster2008internationalsystemic
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| Authors | ;Antonia Fuster;Jaume Sauleda;Ernest Sala;Bernard&iacute; Barcel&oacute;;Jaume Pons;et al |
| Journal | tijdschrift voor geneeskunde |
| Year | 2008 |
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