RT Journal Article T1 Intermittent Hypoxia Is Associated With High Hypoxia Inducible Factor-1α but Not High Vascular Endothelial Growth Factor Cell Expression in Tumors of Cutaneous Melanoma Patients. A1 Almendros, Isaac A1 Martínez-García, Miguel Ángel A1 Campos-Rodríguez, Francisco A1 Riveiro-Falkenbach, Erica A1 Rodríguez-Peralto, José L A1 Nagore, Eduardo A1 Martorell-Calatayud, Antonio A1 Hernández Blasco, Luis A1 Bañuls Roca, Jose A1 Chiner Vives, Eusebi A1 Sánchez-de-la-Torre, Alicia A1 Abad-Capa, Jorge A1 Montserrat, Josep Maria A1 Pérez-Gil, Amalia A1 Cabriada-Nuño, Valentín A1 Cano-Pumarega, Irene A1 Corral-Peñafiel, Jaime A1 Diaz-Cambriles, Trinidad A1 Mediano, Olga A1 Dalmau-Arias, Joan A1 Farré, Ramon A1 Gozal, David A1 Spanish Sleep Network, K1 hypoxia-inducible factor K1 intermittent hypoxia K1 melanoma K1 obstructive sleep apnea K1 vascular endothelial growth factor AB Epidemiological associations linking between obstructive sleep apnea and poorer solid malignant tumor outcomes have recently emerged. Putative pathways proposed to explain that these associations have included enhanced hypoxia inducible factor (HIF)-1α and vascular endothelial growth factor (VEGF) cell expression in the tumor and altered immune functions via intermittent hypoxia (IH). Here, we examined relationships between HIF-1α and VEGF expression and nocturnal IH in cutaneous melanoma (CM) tumor samples. Prospectively recruited patients with CM tumor samples were included and underwent overnight polygraphy. General clinical features, apnea-hypopnea index (AHI), desaturation index (DI4%), and CM characteristics were recorded. Histochemical assessments of VEGF and HIF-1α were performed, and the percentage of positive cells (0, 75%) was blindly tabulated for VEGF expression, and as 0, 0-5.9, 6.0-10.0, >10.0% for HIF-1α expression, respectively. Cases with HIF-1α expression >6% (high expression) were compared with those 10.0% for HIF-1α expression, respectively. Cases with HIF-1α expression >6% (high expression) were compared with those 6% (high expression) were compared with those 75% of cells was compared with those with SN 1664-2295 YR 2018 FD 2018-04-26 LK http://hdl.handle.net/10668/12458 UL http://hdl.handle.net/10668/12458 LA en DS RISalud RD Apr 8, 2025