RT Journal Article T1 Feasibility of Multiplex Cytokine Profiling in Preterm Labor: Towards Biomarker Discovery A1 Llano, Ruth A1 Ardao Palacios, Inés A1 Brea Floriani, José Manuel A1 Romero, Luz A1 Pata, María P. A1 Martínez Rodríguez, Antón Leandro A1 Macía Cortiñas, Manuel A1 Loza García, María Isabel K1 Preterm delivery K1 Urinary cytokines K1 Cytokine network K1 Inflammatory pathways K1 IL-1 signaling K1 GAMLSS K1 Luminex multiplex technology K1 Exploratory biomarker discovery AB Preterm delivery affects approximately 10% of pregnancies worldwide and remains a major clinical challenge due to the lack of reliable early predictive tools. Existing strategies are often invasive, relying on blood or amniotic fluid samples and requiring complex processing. In this study, we describe a novel non-invasive approach based on the multiplex detection of inflammatory cytokines in small urine volumes from pregnant women. To account for clinical and temporal variability, we applied Generalized Additive Models for Location, Scale, and Shape (GAMLSS) to adjust for gestational age at sampling and obstetric factors. Correlation network analyses revealed cytokine interactions that distinguished preterm from term deliveries, with macrophage-derived cytokines—MIP- 1α, MIP-1β, IL-15, and IL-22—emerging as central nodes. These findings highlight the involvement of the IL-1 pathway in the pathophysiology of preterm labor. Furthermore, urinary IL-5 and IL-31 levels correlated positively with pregnancy duration, whereas IL-1β and IL-1Ra in urine and TNFα in amniotic fluid showed inverse associations. Altogether, this non-invasive methodology provides insight into immune dynamics during pregnancy and offers a foundation for future studies focused on biomarker discovery and mechanistic understanding of preterm birth. PB MDPI SN 2079-7737 YR 2025 FD 2025-06-17 LK https://hdl.handle.net/10347/42406 UL https://hdl.handle.net/10347/42406 LA eng NO Llano, R.; Ardao, I.; Brea, J.M.; Romero, L.; Pata, M.P.; Martínez, A.L.; Macía, M.; Loza, M.I. Feasibility of Multiplex Cytokine Profiling in Preterm Labor: Towards Biomarker Discovery. Biology 2025, 14, 714. NO Xunta de Galicia (ED431C 2022/20) NO European Regional Development Fund NO Spanish Ministry of Science, Innovation, and Universities NO European Union NextGenerationEU NO Biotechnology Plan Applied to Health DS Minerva RD 29 abr 2026