RT Journal Article T1 De novo lipogenesis in adipose tissue is associated with course of morbid obesity after bariatric surgery. A1 Garrido-Sánchez, Lourdes A1 Vendrell, Joan A1 Fernández-García, Diego A1 Ceperuelo-Mallafré, María Victoria A1 Chacón, Matilde R A1 Ocaña-Wilhelmi, Luis A1 Alcaide, Juan A1 Tinahones, Francisco J A1 García-Fuentes, Eduardo K1 aminoglycoside N1-acetyltransferase K1 ACACB protein, human K1 Acetil CoA Carboxilasa K1 Acetiltransferasas K1 Tejido adiposo K1 Antropometría K1 Cirugía bariátrica K1 Grasa Intraabdominal K1 Lipogénesis K1 lipolisis K1 ARN Mensajero K1 Grasa subcutánea K1 ATP Citrato (pro-S)-Liasa AB OBJECTIVEDe novo lipogenesis is involved in fatty acid biosynthesis and could be involved in the regulation of the triglyceride storage capacity of adipose tissue. However, the association between lipogenic and lipolytic genes and the evolution of morbidly obese subjects after bariatric surgery remains unknown. In this prospective study we analyze the association between the improvement in the morbidly obese patients as a result of bariatric surgery and the basal expression of lipogenic and lipolytic genes.METHODSWe study 23 non diabetic morbidly obese patients who were studied before and 7 months after bariatric surgery. Also, we analyze the relative basal mRNA expression levels of lipogenic and lipolytic genes in epiploic visceral adipose tissue (VAT) and abdominal subcutaneous adipose tissue (SAT).RESULTSWhen the basal acetyl-CoA carboxylase 1 (ACC1), acetyl-CoA synthetase 2 (ACSS2) and ATP citrate lyase (ACL) expression in SAT was below percentile-50, there was a greater decrease in weight (P = 0.006, P = 0.034, P = 0.026), body mass index (P = 0.008, P = 0.033, P = 0.034) and hip circumference (P = 0.033, P = 0.021, P = 0.083) after bariatric surgery. In VAT, when the basal ACSS2 expression was below percentile-50, there was a greater decrease in hip circumference (P = 0.006). After adjusting for confounding variables in logistic regression models, only the morbidly obese patients with SAT or VAT ACSS2 expression ≥ P50 before bariatric surgery had a lower percentage hip circumference loss (