PMID- 21907990 OWN - NLM STAT- MEDLINE DCOM- 20120405 LR - 20211020 IS - 1879-1484 (Electronic) IS - 0021-9150 (Print) IS - 0021-9150 (Linking) VI - 219 IP - 2 DP - 2011 Dec TI - The SH2B1 obesity locus is associated with myocardial infarction in diabetic patients and with NO synthase activity in endothelial cells. PG - 667-72 LID - 10.1016/j.atherosclerosis.2011.08.019 [doi] AB - OBJECTIVE: Obesity and cardiovascular disease recognize a common metabolic soil and may therefore share part of their genetic background. Genome-wide association studies have identified variability at the SH2B1 locus as a predictor of obesity. We investigated whether SNP rs4788102, which captures the entire SH2B1 variability, is associated with coronary artery disease (CAD) and/or myocardial infarction (MI) in patients with type 2 diabetes mellitus (T2DM). DESIGN AND SETTING: SNP rs4788102 was typed in 2015 White subjects with T2DM from three CAD case-control studies [n=740 from the Gargano Hearth Study (GHS, Italy); n=818 from the Joslin Hearth Study (JHS, Boston); n=457 from the University of Catanzaro (CZ, Italy)]. RESULTS: SNP rs4788102 (G/A) was not associated with CAD (overall allelic OR=1.06, 95% CI=0.93-1.21; p=0.37). On the contrary, it was associated with MI in GHS (1.42, 1.12-1.81; p=0.004) and in the three samples analyzed together (1.21, 1.04-1.41; p=0.016). Insulin stimulated nitric oxide synthase (NOS) activity in human vein endothelial cells from G/G (n=4, p=0.03) but not the G/A (n=5, p=0.83) genotype. Of the SNPs in perfect LD with rs4788102, one (rs7498665) affects amino acid polarity (Ala484Thr) and falls into a highly conserved protein segment of SH2B1 containing a class II SH3 domain binding site. CONCLUSIONS: Variability at the SH2B1 obesity locus is associated with MI in diabetic patients and with reduced insulin-stimulated NOS activity in human endothelial cells. Further studies are needed to replicate this association and dissect the biology underlying this finding. CI - Copyright (c) 2011 Elsevier Ireland Ltd. All rights reserved. FAU - Prudente, Sabrina AU - Prudente S AD - IRCSS Casa Sollievo della Sofferenza-Mendel Laboratory, San Giovanni Rotondo, Italy. s.prudente@css-mendel.it FAU - Morini, Eleonora AU - Morini E FAU - Larmon, Jay AU - Larmon J FAU - Andreozzi, Francesco AU - Andreozzi F FAU - Di Pietro, Natalia AU - Di Pietro N FAU - Nigro, Angela AU - Nigro A FAU - Gervino, Ernest V AU - Gervino EV FAU - Mannino, Gaia Chiara AU - Mannino GC FAU - Bacci, Simonetta AU - Bacci S FAU - Hauser, Thomas H AU - Hauser TH FAU - Bellacchio, Emanuele AU - Bellacchio E FAU - Formoso, Gloria AU - Formoso G FAU - Pellegrini, Fabio AU - Pellegrini F FAU - Proto, Vittoria AU - Proto V FAU - Menzaghi, Claudia AU - Menzaghi C FAU - Frittitta, Lucia AU - Frittitta L FAU - Pandolfi, Assunta AU - Pandolfi A FAU - Sesti, Giorgio AU - Sesti G FAU - Doria, Alessandro AU - Doria A FAU - Trischitta, Vincenzo AU - Trischitta V LA - eng GR - P30 DK036836/DK/NIDDK NIH HHS/United States GR - R01 HL073168/HL/NHLBI NIH HHS/United States GR - HL73168/HL/NHLBI NIH HHS/United States GR - DK36836/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Multicenter Study PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20110819 PL - Ireland TA - Atherosclerosis JT - Atherosclerosis JID - 0242543 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Insulin) RN - 0 (SH2B1 protein, human) RN - EC 1.14.13.39 (NOS3 protein, human) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type III) SB - IM MH - Adaptor Proteins, Signal Transducing/*genetics MH - Aged MH - Boston MH - Case-Control Studies MH - Computational Biology MH - Coronary Artery Disease/enzymology/genetics MH - Diabetes Complications/enzymology/*genetics MH - Diabetes Mellitus, Type 2/complications/enzymology/*genetics MH - Female MH - Gene Frequency MH - Genetic Association Studies MH - Genetic Predisposition to Disease MH - Human Umbilical Vein Endothelial Cells/*enzymology MH - Humans MH - Insulin/metabolism MH - Italy MH - Linkage Disequilibrium MH - Logistic Models MH - Male MH - Middle Aged MH - Myocardial Infarction/enzymology/*genetics MH - Nitric Oxide Synthase Type III/*metabolism MH - Obesity/*genetics MH - Odds Ratio MH - Phenotype MH - Polymorphism, Single Nucleotide MH - Risk Assessment MH - Risk Factors PMC - PMC3728428 MID - NIHMS490069 COIS- DUALITY OF INTEREST The authors declare that there is no duality of interest associated with this manuscript. EDAT- 2011/09/13 06:00 MHDA- 2012/04/06 06:00 PMCR- 2013/07/31 CRDT- 2011/09/13 06:00 PHST- 2011/06/22 00:00 [received] PHST- 2011/07/22 00:00 [revised] PHST- 2011/08/06 00:00 [accepted] PHST- 2011/09/13 06:00 [entrez] PHST- 2011/09/13 06:00 [pubmed] PHST- 2012/04/06 06:00 [medline] PHST- 2013/07/31 00:00 [pmc-release] AID - S0021-9150(11)00823-9 [pii] AID - 10.1016/j.atherosclerosis.2011.08.019 [doi] PST - ppublish SO - Atherosclerosis. 2011 Dec;219(2):667-72. doi: 10.1016/j.atherosclerosis.2011.08.019. Epub 2011 Aug 19.