RT Journal Article T1 Peripheral blood mononuclear cells-expressed miRNA profiles derived from children with metabolic-associated fatty liver disease and insulin resistance. A1 Oses, Maddi A1 Medrano, María A1 Margareto Sanchez, Javier A1 Portillo, Maria P A1 Aguilera, Concepcion Maria A1 Altmäe, Signe A1 Labayen, Idoia K1 MiRNA K1 children K1 fatty liver K1 insulin resistance K1 metabolic diseases K1 obesity AB miRNA have been proposed as potential biomarkers of metabolic diseases. To identify potential miRNA biomarkers of early metabolic-associated fatty liver disease (MAFLD) and/or insulin resistance (IR) in preadolescent children. A total of 70 preadolescents, aged 8.5-12 years old participated in the study. Hepatic fat was assessed by magnetic resonance imaging. Fasting blood biochemical parameters were measured and HOMA-IR calculated. Peripheral blood mononuclear cells (PBMC)-derived miRNA profiles associated with MAFLD (≥5.5% hepatic fat) and IR (HOMA-IR ≥2.5) were identified using untargeted high-throughput miRNAs sequencing (RNA-seq). A total of 2123 PBMC-derived miRNAs were identified in children with (21.4%) or without MAFLD. Among them, hsa-miR-143-3p, hsa-miR-142-5p and hsa-miR-660-5p were up-regulated, and p-hsa-miR-247, hsa-let-7a-5p and hsa-miR-6823-3p down-regulated. Importantly, children with MAFLD had consistently higher miR-660-5p expression levels than their peers without it (p  Our study results suggest circulating miR-660-5p as a potential biomarker of the presence of MAFLD in preadolescent children while circulating miR-320a, miR-142-3p, miR-190a-5p, miR-374a-5p and let-7 family miRNAs could serve as potential biomarkers of IR in children. YR 2022 FD 2022-08-31 LK http://hdl.handle.net/10668/19971 UL http://hdl.handle.net/10668/19971 LA en DS RISalud RD Apr 12, 2025