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Neutrophils of both groups of PD patients had an elecated PMA\u2010activated release of \u00b7NO [61 and 57%, respectively, higher than that of controls (<jats:italic>p<\/jats:italic> &lt; 0.05)]. In contrast, H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> release was only significantly increased by 56% in chronically treated patients. In agreement, the maximum rate of luminoldependent chmiluminescence, which partly represents O<jats:sub>2<\/jats:sub>\u2010H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub>\u2010.NO interactions, was increased only in the treated group. When other blood markers of oxidative stress were compared, only erythrocyte catalase activity was decreased in both PD patient series by 33 and 39%, respectively (<jats:italic>p<\/jats:italic> &lt; 0.05), whereas plasma antioxidant capacity and erythrocyte superoxide dismutase activity levels were decreased only in treated PD patients. This study suggests that neurophils express a primary alteration of \u00b7NO release in PD patients, whereas H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> and oxidativestress parameters are more probably related to the evolution of PD or to effects of treatment with L\u2010dopa.<\/jats:p>","DOI":"10.1002\/mds.870110308","type":"journal-article","created":{"date-parts":[[2004,12,31]],"date-time":"2004-12-31T09:47:08Z","timestamp":1104486428000},"page":"261-267","source":"Crossref","is-referenced-by-count":44,"title":["Neutrophil function, nitric oxide, and blood oxidative stress in Parkinson's disease"],"prefix":"10.1002","volume":"11","author":[{"given":"Emilia M.","family":"Gatto","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda C.","family":"Carreras","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Griselda A.","family":"Pargament","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalia A.","family":"Riobo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudia","family":"Reides","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marisa","family":"Repetto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuel M. 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