PMID- 15349727 OWN - NLM STAT- MEDLINE DCOM- 20050307 LR - 20181113 IS - 0012-186X (Print) IS - 0012-186X (Linking) VI - 47 IP - 9 DP - 2004 Sep TI - Association between the A-2518G polymorphism in the monocyte chemoattractant protein-1 gene and insulin resistance and Type 2 diabetes mellitus. PG - 1574-80 AB - AIMS/HYPOTHESIS: The molecular mechanisms of obesity-related insulin resistance are incompletely understood. Macrophages accumulate in adipose tissue of obese individuals. In obesity, monocyte chemoattractant protein-1 (MCP-1), a key chemokine in the process of macrophage accumulation, is overexpressed in adipose tissue. MCP-1 is an insulin-responsive gene that continues to respond to exogenous insulin in insulin-resistant adipocytes and mice. MCP-1 decreases insulin-stimulated glucose uptake into adipocytes. The A-2518G polymorphism in the distal regulatory region of MCP-1 may regulate gene expression. The aim of this study was to investigate the impact of this gene polymorphism on insulin resistance. METHODS: We genotyped the Ludwigshafen Risk and Cardiovascular Health (LURIC) cohort ( n=3307). Insulin resistance, estimated by homeostasis model assessment, and Type 2 diabetes were diagnosed in 803 and 635 patients respectively. RESULTS: Univariate analysis revealed that plasma MCP-1 levels were significantly and positively correlated with WHR ( p=0.011), insulin resistance ( p=0.0097) and diabetes ( p<0.0001). Presence of the MCP-1 G-2518 allele was associated with decreased plasma MCP-1 ( p=0.017), a decreased prevalence of insulin resistance (odds ratio [OR]=0.82, 95% CI: 0.70-0.97, p=0.021) and a decreased prevalence of diabetes (OR=0.80, 95% CI: 0.67-0.96, p=0.014). In multivariate analysis, the G allele retained statistical significance as a negative predictor of insulin resistance (OR=0.78, 95% CI: 0.65-0.93, p=0.0060) and diabetes (OR=0.80, 95% CI: 0.66-0.96, p=0.018). CONCLUSIONS/INTERPRETATION: In a large cohort of Caucasians, the MCP-1 G-2518 gene variant was significantly and negatively correlated with plasma MCP-1 levels and the prevalence of insulin resistance and Type 2 diabetes. These results add to recent evidence supporting a role for MCP-1 in pathologies associated with hyperinsulinaemia. FAU - Simeoni, E AU - Simeoni E AD - Department of Cardiology, University Hospital, CHUV-BH10, 1011, Lausanne, Switzerland. FAU - Hoffmann, M M AU - Hoffmann MM FAU - Winkelmann, B R AU - Winkelmann BR FAU - Ruiz, J AU - Ruiz J FAU - Fleury, S AU - Fleury S FAU - Boehm, B O AU - Boehm BO FAU - Marz, W AU - Marz W FAU - Vassalli, G AU - Vassalli G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20040902 PL - Germany TA - Diabetologia JT - Diabetologia JID - 0006777 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 5Z93L87A1R (Guanine) RN - IY9XDZ35W2 (Glucose) RN - JAC85A2161 (Adenine) SB - IM MH - Adenine MH - Aged MH - Chemokine CCL2/*genetics MH - Cohort Studies MH - Diabetes Mellitus, Type 2/blood/*genetics MH - Female MH - Glucose/metabolism MH - Guanine MH - Homeostasis MH - Humans MH - Hyperinsulinism/genetics MH - Insulin Resistance/*physiology MH - Male MH - Middle Aged MH - Polymorphism, Single Nucleotide/*genetics EDAT- 2004/09/07 05:00 MHDA- 2005/03/08 09:00 CRDT- 2004/09/07 05:00 PHST- 2004/05/05 00:00 [received] PHST- 2004/06/18 00:00 [accepted] PHST- 2004/09/07 05:00 [pubmed] PHST- 2005/03/08 09:00 [medline] PHST- 2004/09/07 05:00 [entrez] AID - 10.1007/s00125-004-1494-4 [doi] PST - ppublish SO - Diabetologia. 2004 Sep;47(9):1574-80. doi: 10.1007/s00125-004-1494-4. Epub 2004 Sep 2.