RT Journal Article T1 Insulin receptor substrate-1 expression is increased in circulating leukocytes of patients with acute coronary syndrome. A1 Jiménez-Navarro, Manuel Francisco A1 Bueno, Héctor A1 Álvarez-Sala, Luis A1 Rodríguez-Losada, Noéla A1 Andrés, Vicente A1 González-Navarro, Herminia K1 Proteínas Sustrato del Receptor de Insulina K1 Síndrome Coronario Agudo K1 Síndrome X Metabólico K1 Diabetes Mellitus K1 Leucocitos Mononucleares K1 Humanos AB The mechanisms underlying the increased risk of cardiovascular disease associated with diabetes mellitus (DM) are not fully defined. Insulin resistance in human metabolic syndrome patients is associated with decreased expression of the insulin receptor substrate-2- (Irs2-) AKT2 axis in mononuclear leukocytes (MLs). Moreover, acute coronary syndrome (ACS) has been linked through genome-wide association studies to the 2q36-q37.3 locus, which contains the Irs1 gene. Here, we investigated the expression of insulin-signaling pathway genes in MLs from patients with DM, ACS, and ACS plus DM. Quantitative real-time PCR expression studies showed no differences in the mRNA levels of Irs2, Akt2, and Akt1 among all patients. However, Irs1 mRNA expression was significantly increased in patients with ACS-diabetics and nondiabetics-compared with diabetic patients without ACS (P < .02 and P < .005, resp.). The present study reveals for the first time an association between increased Irs1 mRNA levels in MLs of patients with ACS which is not related to DM. PB Hindawi Publishing Corporation SN 2090-5580 YR 2011 FD 2011 LK http://hdl.handle.net/10668/755 UL http://hdl.handle.net/10668/755 LA en NO Jiménez-Navarro MF, Bueno H, Alvarez-Sala L, Rodríguez-Losada N, Andrés V, González-Navarro H. Insulin receptor substrate-1 expression is increased in circulating leukocytes of patients with acute coronary syndrome. ISRN Cardiol; 2011:740585 NO Journal Article; DS RISalud RD Apr 5, 2025