RT Journal Article SR Electronic T1 Biomarkers in COPD- The role of resistin and leptin JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP PA691 DO 10.1183/13993003.congress-2015.PA691 VO 46 IS suppl 59 A1 Vlasios Vitsas A1 Kardara Matina A1 Vasileiou Aliki A1 Koutsoukou Antonia A1 Michalopoulou Pinelopi A1 Orfanos Stylianos A1 Tsoukalas Georgios A1 Kotanidou Anastasia YR 2015 UL http://erj.ersjournals.com/content/46/suppl_59/PA691.abstract AB Introduction: COPD is a condition of global importance, characterised by accelerated lung function decline and an abnormal inflammatory response. Exacerbations account for much of the morbidity and the mortality in COPD. Leptin is a protein that is synthesised and secreted by white adipose tissue while resistin is a cysteine-rich adipose-derivedpeptide hormone that in humans is encoded by the RETN gene.Objectives: To record and analyse parameters such as biomarkers, lung functions and dyspnea level on the 1st day of a COPD exacerbation, at discharge and 6 weeks after.Methods: 35 patients (mean age 67,5 years) hospitalised for exacerbation of COPD are included so far in the study. Biomarkers such as adiponectin, leptin, resistin, IL6, IL8 and CRP were measured at admission, at discharge and 6 weeks after discharge. Lung function and dyspnea level were studied and measured at discharge and 6 weeks later.Results: Leptin levels at admission (mean=41,28 ng/ml) were decreased at discharge (33,2) (p=0,015) and further decreased 6 weeks after discharge (mean=29,94 and compared to the admission levels p=0,002). Similar results were observed with resistin, (admission levels mean=23,76, discharge levels 17,64 p=0,064 and levels 6 weeks were 11,66 and compared to the admission levels p=0,001).Statistical significant differences were also observed at the levels of CRP at admission and discharge (p<0,001) and at the levels of FEV1 % at discharge and 6 weeks after(p=0,003) as expected.Conclusion: Levels of Leptin and Resistin are found significantly decreased at discharge and 6 weeks after discharge compared to the admission levels fact that indicates that they may be valuable biomarkers for the assessment of COPD severity along with FEV1 and CRP.