RT Journal Article T1 Changes in arginine are inversely associated with type 2 diabetes: A case-cohort study in the PREDIMED trial. A1 Yu, Edward A1 Ruiz-Canela, Miguel A1 Razquin, Cristina A1 Guasch-Ferré, Marta A1 Toledo, Estefania A1 Wang, Dong D A1 Papandreou, Christopher A1 Dennis, Courtney A1 Clish, Clary A1 Liang, Liming A1 Bullo, Monica A1 Corella, Dolores A1 Fitó, Montserrat A1 Gutiérrez-Bedmar, Mario A1 Lapetra, José A1 Estruch, Ramón A1 Ros, Emilio A1 Cofán, Montserrat A1 Arós, Fernando A1 Romaguera, Dora A1 Serra-Majem, Lluis A1 Sorlí, Jose V A1 Salas-Salvadó, Jordi A1 Hu, Frank B A1 Martínez-González, Miguel A K1 cohort study K1 dietary intervention K1 insulin resistance K1 observational study K1 population study, type 2 diabetes AB The associations between arginine-based metabolites and incident type 2 diabetes (T2D) are unknown. We employed a case-cohort design, nested within the PREDIMED trial, to examine six plasma metabolites (arginine, citrulline, ornithine, asymmetric dimethylarginine [ADMA], symmetric dimethylarginine [SDMA] and N-monomethyl-l-arginine [NMMA]) among 892 individuals (251 cases) for associations with incident T2D and insulin resistance. Weighted Cox models with robust variance were used. The 1-year changes in arginine (adjusted hazard ratio [HR] per SD 0.68, 95% confidence interval [CI] 0.49, 0.95; Q4 vs. Q1 0.46, 95% CI 0.21, 1.04; P trend = 0.02) and arginine/ADMA ratio (adjusted HR per SD 0.73, 95% CI 0.51, 1.04; Q4 vs. Q1 0.52, 95% CI 0.22, 1.25; P trend = 0.04) were associated with a lower risk of T2D. Positive changes of citrulline and ornithine, and negative changes in SDMA and arginine/(ornithine + citrulline) were associated with concurrent 1-year changes in homeostatic model assessment of insulin resistance. Individuals in the low-fat-diet group had a higher risk of T2D for 1-year changes in NMMA than individuals in Mediterranean-diet groups (P interaction = 0.02). We conclude that arginine bioavailability is important in T2D pathophysiology. YR 2018 FD 2018-10-02 LK http://hdl.handle.net/10668/12873 UL http://hdl.handle.net/10668/12873 LA en DS RISalud RD Apr 7, 2025