Document Detail

Effects of Ile164 polymorphism of beta2-adrenergic receptor gene on coronary artery disease.
MedLine Citation:
PMID:  18940527     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: This study investigated the relationship between beta(2)-adrenergic receptor (B2AR) Ile164 polymorphism and coronary artery disease (CAD). BACKGROUND: B2ARs are crucial to the regulation of vascular tone, and neoangiogenesis is impaired in the presence of isoleucine at position 164 (Ile164) B2AR gene polymorphism. No data deal with the role of the variants at position 164 of the B2AR gene in the setting of CAD. METHODS: The study population consisted of 330 patients undergoing percutaneous coronary intervention (PCI). RESULTS: The Ile164 polymorphism frequency was higher in CAD (12.1% vs. 3%, p = 0.008) with respect to the control population. We divided our population into 2 groups: group 1 (290 patients, threonine/threonine genotype at position 164 [164Thr/Thr]) and group 2 (40 patients, threonine/isoleucine genotype at position 164 [164Thr/Ile]). Patients of group 2 presented an earlier onset of CAD (56.7 +/- 7.8 vs. 59.5 +/- 10, p = 0.04) and a higher incidence of multivessel disease (25.4% vs. 41%, p = 0.044). At follow-up, group 2 showed a higher incidence of new acute myocardial infarction (17.5% vs. 4.5%, p = 0.001), new PCI (37.5% vs. 13.1%, p < 0.0001), and cardiac death (10% vs. 3.1%, p = 0.036). Cox regression analysis identified Ile164 as an independent predictor of cardiac death (odds ratio [OR]: 3.731, 95% confidence interval [CI]: 1.004 to 13.867, p = 0.049) and an overall major adverse cardiac event (OR: 4.100, 95% CI: 1.945 to 8.640, p = 0.0001). A replication study was done on a population of 150 patients with peripheral artery disease. The presence of the Ile164 allele was associated with a higher incidence of acute myocardial infarction (54.5% vs. 25.2%, p = 0.035) or combined events (acute myocardial infarction, PCI, or coronary artery bypass graft) (63.6% vs. 30.9%, p = 0.027). CONCLUSIONS: Our study suggests that the B2AR Ile164 mutant is associated with a more aggressive CAD and adversely affects prognosis in patients undergoing PCI.
Federico Piscione; Guido Iaccarino; Gennaro Galasso; Ersilia Cipolletta; Maria Assunta Rao; Gregorio Brevetti; Raffaele Piccolo; Bruno Trimarco; Massimo Chiariello
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of the American College of Cardiology     Volume:  52     ISSN:  1558-3597     ISO Abbreviation:  J. Am. Coll. Cardiol.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-10-22     Completed Date:  2008-12-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8301365     Medline TA:  J Am Coll Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1381-8     Citation Subset:  AIM; IM    
Department of Clinical Medicine, Cardiovascular and Immunology Sciences, Federico II University School of Medicine, Naples, Italy.
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MeSH Terms
Angioplasty, Transluminal, Percutaneous Coronary
Coronary Artery Disease / genetics*,  therapy
Isoleucine / genetics*
Middle Aged
Polymorphism, Single Nucleotide
Receptors, Adrenergic, beta-2 / genetics*
Severity of Illness Index
Reg. No./Substance:
0/Receptors, Adrenergic, beta-2; 73-32-5/Isoleucine
Comment In:
J Am Coll Cardiol. 2008 Oct 21;52(17):1389-90   [PMID:  18940528 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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