Document Detail


Association of beta1-adrenergic receptor genetic polymorphism with mental stress-induced myocardial ischemia in patients with coronary artery disease.
MedLine Citation:
PMID:  18413560     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Mental stress is associated with sympathetic adrenergic stimulation and concomitant increases in blood pressure and heart rate. Heritable individual differences in cardiovascular functional response to mental stress may arise from genetic variations in adrenergic receptors, which might produce excessive hemodynamic response to mental stress or create other conditions favoring the development of myocardial ischemia. METHODS: We examined the relationship between hemodynamic response to mental stress and mental stress-induced myocardial ischemia (MSIMI) and 5 common functional polymorphisms of beta1-adrenergic receptors (ADRB1 [OMIM 109630, accession No. 153]) and beta2-adrenergic receptors (ADRB2 [OMIM 109690, accession No. 154]). Participants were 148 patients (45 female [30.4%]) with a documented history of coronary artery disease and a mean (SD) age of 64 (9) years. Patients were enrolled between December 9, 2004, and February 21, 2007. Mental stress was induced via a public-speaking task. Rest and stress myocardial perfusion imaging was performed. Blood samples were collected and genotyped for 5 common functional polymorphisms of ADRB1 (codons 49 and 389) and ADRB2 (codons 16 and 27 and nucleotide 523). The main outcome measures were hemodynamic and myocardial ischemic responses to mental stress. Mental stress-induced myocardial ischemia was defined as new or worsening perfusion defects during mental stress with a summed (stress to rest) difference score of at least 3. RESULTS: A statistically significant difference was noted in the prevalences of MSIMI between genotype groups for codon 49 of ADRB1. Mental stress-induced myocardial ischemia occurred 3 times more frequently among patients homozygous for the Ser49 allele (31 of 104 patients [29.8%]) compared with 4 of 39 patients (10.3%) among the Gly49 allele carriers (P=.02). The adjusted odds ratio for the effect of genotype (Ser/Ser vs Gly carriers) on MSIMI was 3.9 (95% confidence interval, 1.2-12.5) (P=.02). CONCLUSIONS: Our findings indicate an association between a common genetic variation in ADRB1 and myocardial ischemic response to mental stress in patients with coronary artery disease. This polymorphic genetic marker may help identify patients at increased risk for mental stress-induced adverse outcomes.
Authors:
Mustafa Hassan; Kaki M York; Haihong Li; Qin Li; Yan Gong; Taimour Y Langaee; Roger B Fillingim; Julie A Johnson; David S Sheps
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Archives of internal medicine     Volume:  168     ISSN:  0003-9926     ISO Abbreviation:  Arch. Intern. Med.     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-04-16     Completed Date:  2008-05-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372440     Medline TA:  Arch Intern Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  763-70     Citation Subset:  AIM; IM    
Affiliation:
Cardiovascular Research, Division of Cardiology, Department of Medicine, College of Pharmacy, University of Florida, 1601 SW Archer Rd, Code 111-D, Gainesville, FL 32608, USA.
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MeSH Terms
Descriptor/Qualifier:
Coronary Disease / complications*
Female
Genotype
Humans
Male
Middle Aged
Myocardial Ischemia / etiology*,  genetics*
Polymorphism, Genetic*
Prevalence
Receptors, Adrenergic, beta-1 / genetics*
Stress, Psychological / complications*,  physiopathology,  radionuclide imaging
Grant Support
ID/Acronym/Agency:
HL 070265/HL/NHLBI NIH HHS; HL 072059/HL/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/Receptors, Adrenergic, beta-1

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


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