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Using a multiplex fluorescent bead\nimmunoassay, we detected EPO in EBC, as well as tumour necrosis factor\u2010<jats:italic>\u03b1<\/jats:italic> (TNF\u2010<jats:italic>\u03b1<\/jats:italic>) in 13 out of 22 patients simultaneously (EPO 0.21 \u00b1 0.03 in U\/mL and TNF\u2010<jats:italic>\u03b1<\/jats:italic> 34.6 \u00b1 4.2 in pg\/mL, mean \u00b1 SEM). No significant differences for EPO levels or correlation between EPO and\nTNF\u2010<jats:italic>\u03b1<\/jats:italic> were found but TNF\u2010<jats:italic>\u03b1<\/jats:italic> was significantly higher in patients with chronic obstructive pulmonary disease (COPD) than in non\u2010COPD (obstructive sleep apnoea, OSA, and lung healthy patients). This is the first report of detection of EPO in EBC. Due to the small study size more data is needed to clarify the role of EPO in EBC.<\/jats:p>","DOI":"10.1155\/mi\/2006\/18061","type":"journal-article","created":{"date-parts":[[2006,11,16]],"date-time":"2006-11-16T00:58:50Z","timestamp":1163638730000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Detection of Erythropoietin in Exhaled Breath Condensate of Nonhypoxic Subjects Using a Multiplex Bead 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