BACKGROUND:Chronic obstructive pulmonary disease (COPD) is accompanied by both airway and systemic inflammation and by oxidative stress. This study aimed to characterise the relationship between oxidative stress and inflammatory components in induced sputum and blood. MATERIAL & METHODS: We studied blood and sputum samples from stable COPD patients (mean FEV1 60.5+/-7.5% predicted) at baseline (no treatment) and after 10 weeks treatment with either inhaled steroid, fluticasone propionate (FP) (1000 microg/d) or 10 weeks treatment with N-acetylcysteine (600mg/d) (NAC). We assessed the inflammatory markers (IL-8, ECP, sICAM-1, NE) in sputum and serum and we compared them with blood markers of oxidative stress (SOD, GPx, TEAC, albumin, vitamin E and A). RESULTS: At baseline blood sICAM-1 correlated with IL-8 levels (P<0.01, r = 0.62) and negatively with GPx (P<0.01, r = -0.63) and with TEAC (P<0.05, r = -0.53). TEAC correlated positively with GPx (P<0.01, r = 0.70). Correlation between sICAM and IL-8 disappeared after NAC treatment. The correlation between sICAM and GPx disappeared after FP treatment. The correlation between TEAC and GPx was maintained after both NAC and FP. CONCLUSIONS: The relationship between markers of inflammation, adhesion and antioxidant capacity is significantly modulated by treatment with N-acetylcysteine or inhaled corticosteroids.
RCT Entities:
BACKGROUND:Chronic obstructive pulmonary disease (COPD) is accompanied by both airway and systemic inflammation and by oxidative stress. This study aimed to characterise the relationship between oxidative stress and inflammatory components in induced sputum and blood. MATERIAL & METHODS: We studied blood and sputum samples from stable COPDpatients (mean FEV1 60.5+/-7.5% predicted) at baseline (no treatment) and after 10 weeks treatment with either inhaled steroid, fluticasone propionate (FP) (1000 microg/d) or 10 weeks treatment with N-acetylcysteine (600mg/d) (NAC). We assessed the inflammatory markers (IL-8, ECP, sICAM-1, NE) in sputum and serum and we compared them with blood markers of oxidative stress (SOD, GPx, TEAC, albumin, vitamin E and A). RESULTS: At baseline blood sICAM-1 correlated with IL-8 levels (P<0.01, r = 0.62) and negatively with GPx (P<0.01, r = -0.63) and with TEAC (P<0.05, r = -0.53). TEAC correlated positively with GPx (P<0.01, r = 0.70). Correlation between sICAM and IL-8 disappeared after NAC treatment. The correlation between sICAM and GPx disappeared after FP treatment. The correlation between TEAC and GPx was maintained after both NAC and FP. CONCLUSIONS: The relationship between markers of inflammation, adhesion and antioxidant capacity is significantly modulated by treatment with N-acetylcysteine or inhaled corticosteroids.
Authors: Tanyalak Parimon; Jason W Chien; Chris L Bryson; Mary B McDonell; Edmunds M Udris; David H Au Journal: Am J Respir Crit Care Med Date: 2006-12-21 Impact factor: 21.405
Authors: Anna A Shvedova; Elena R Kisin; Ashley R Murray; Olga Gorelik; Sivaram Arepalli; Vincent Castranova; Shih-Hong Young; Fei Gao; Yulia Y Tyurina; Tim D Oury; Valerian E Kagan Journal: Toxicol Appl Pharmacol Date: 2007-03-27 Impact factor: 4.219
Authors: Umesh C S Yadav; Kota V Ramana; Leopoldo Aguilera-Aguirre; Istvan Boldogh; Hamid A Boulares; Satish K Srivastava Journal: PLoS One Date: 2009-08-06 Impact factor: 3.240