RT Journal Article T1 Mixed Th2 and non-Th2 inflammatory pattern in the asthma-COPD overlap: a network approach. A1 de Llano, Luis Pérez A1 Cosío, Borja G A1 Iglesias, Amanda A1 de Las Cuevas, Natividad A1 Soler-Cataluña, Juan Jose A1 Izquierdo, Jose Luis A1 López-Campos, Jose Luis A1 Calero, Carmen A1 Plaza, Vicente A1 Miravitlles, Marc A1 Torrego, Alfons A1 Martinez-Moragon, Eva A1 Soriano, Joan B A1 Viña, Antolin Lopez A1 Bobolea, Irina K1 COPD mechanisms K1 IL-13 K1 asthma mechanisms K1 inflammatory cytokines K1 network analysis K1 overlap AB The asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO) is a clinical condition that combines features of those two diseases, and that is difficult to define due to the lack of understanding of the underlying mechanisms. Determining systemic mediators may help clarify the nature of inflammation in patients with ACO. We aimed at investigating the role and interaction of common markers of systemic inflammation (IL-6, IL-8, and tumor necrosis factor-α), Th2-related markers (periostin, IL-5, and IL-13), and IL-17 in asthma, COPD, and ACO. This is a cross-sectional study of patients aged ≥40 years with a post-bronchodilator forced expiratory volume in the first second/forced vital capacity 10 pack-years in a patient with a previous diagnosis of asthma or by the presence of eosinophilia in a patient with a previous diagnosis of COPD. Clinical, functional, and inflammatory parameters were compared between categories using discriminant and network analysis. In total, 109 ACO, 89 COPD, and 94 asthma patients were included. Serum levels (median [interquartile range]) of IL-5 were higher in asthma patients than in COPD patients (2.09 [0.61-3.57] vs 1.11 [0.12-2.42] pg/mL, respectively; p=0.03), and IL-8 levels (median [interquartile range]) were higher in COPD patients than in asthma patients (9.45 [6.61-13.12] vs 7.03 [4.69-10.44] pg/mL, respectively; p Asthma and COPD are two different inflammatory conditions that may overlap in some patients, leading to a mixed inflammatory pattern. IL-13 could be central to the regulation of inflammation in these conditions. YR 2018 FD 2018-02-12 LK http://hdl.handle.net/10668/12184 UL http://hdl.handle.net/10668/12184 LA en DS RISalud RD Apr 8, 2025