RT Journal Article T1 Evaluation of pleural effusion sCD26 and DPP-IV as diagnostic biomarkers in lung disease A1 Sánchez Otero, Nuria A1 Rodríguez Berrocal, Francisco Javier A1 Páez de la Cadena, María A1 Botana Rial, María Isabel A1 Cordero Santamaría, Óscar Javier K1 Diagnostic markers K1 Lymphocyte differentiation K1 Hydrolases K1 Proteomics AB In this study, we measured ADA and DPP-IV enzymatic activity and sCD26 concentration in 150 pleuraleffusion (PE) samples and tested for correlations between these and other cellular and biochemicalmeasures. We found that DPP-IV in particular might improve the specificity (but not the sensitivity) of theADA test for diagnosis of pulmonary tuberculosis, since half of the false ADA positive results innon-tuberculous PE were also DPP-IV positive. A percentage of patients with malignant PE were sCD26 orDPP-IV positive; however, some patients with benign PE also tested positive. As a pattern associated withDPP-IV (but not the CD26 protein) was observed in PE, we searched for a finding that might increase thevalue of these biomarkers for diagnosis of malignancy. The observed pattern was related to the presence ofleukocytes, as indicated by correlations with the cell count, and to a band of 180 kDa, detected byimmunoblotting PB Nature Publishing Group YR 2015 FD 2015 LK http://hdl.handle.net/10347/22319 UL http://hdl.handle.net/10347/22319 LA eng NO Sánchez-Otero, N., Rodríguez-Berrocal, F., de la Cadena, M. et al. Evaluation of pleural effusion sCD26 and DPP-IV as diagnostic biomarkers in lung disease. Sci Rep 4, 3999 (2015). https://doi.org/10.1038/srep03999 NO This research was partially supported by grants PS09-00405 and Research Intensification activity from the Fondo de Investigación Sanitaria (FIS) of the Instituto de Salud Carlos III (Spain) and funding from Xunta de Galicia and FEDER (CN 2011/024). We are grateful to the patients who participated and made the study possible DS Minerva RD 25 abr 2026