RGD Reference Report - The relationship between polymorphisms in the endothelial cell nitric oxide synthase gene and the platelet GPIIIa gene with myocardial infarction and venous thromboembolism in African Americans. - Rat Genome Database

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The relationship between polymorphisms in the endothelial cell nitric oxide synthase gene and the platelet GPIIIa gene with myocardial infarction and venous thromboembolism in African Americans.

Authors: Hooper, WC  Lally, C  Austin, H  Benson, J  Dilley, A  Wenger, NK  Whitsett, C  Rawlins, P  Evatt, BL 
Citation: Hooper WC, etal., Chest. 1999 Oct;116(4):880-6.
RGD ID: 5128481
Pubmed: PMID:10531147   (View Abstract at PubMed)

STUDY OBJECTIVES: To determine whether the polymorphic dinucleotide repeats found in intron 4 of the endothelial cell nitric oxide synthase (ecNOS) gene and the platelet GPIIIa PLA(1)/A(2) polymorphism are associated with myocardial infarction (MI) and venous thromboembolism (VTE) in African Americans. Because these two genes may interact physiologically, the third objective was to determine if there was a relationship between the polymorphisms with respect to MI and VTE. DESIGN: A hospital-based case-control study. After informed consent was obtained, blood used for DNA extraction was drawn from the subjects. Setting: The study was conducted in the Anticoagulant Clinic and the Cardiology Clinic at Grady Memorial Hospital in Atlanta Georgia. PATIENTS: Subjects were recruited from African-American patients with a reported history of MI (n = 110) or VTE (n = 91). Control subjects (n = 185) without a history of cardiovascular or venous disease were recruited from an outpatient clinic. MEASUREMENTS AND RESULTS: The 393 ecNOS allele was more common among MI cases (36%; p = 0.01) and VTE cases (35%; p = 0.04) than among control subjects (26%). There was no association between the GPIIIa genotypes and either MI or VTE. However, among the MI subjects, there was a strong association between the ecNOS 393/393 genotype and the Pl(A2) allele. It was also found that the frequency of the 393 allele was higher in African-American persons (0.26) compared with what has been reported for Australian Caucasians (0. 14) and Japanese (0.10). CONCLUSIONS: The 393 allele but not the Pl(A2) allele was significantly associated with both MI and VTE in African Americans. Homozygosity for the 393 allele was significantly associated to the diagnosis of MI prior to the age of 45. The combination of the 393 allele and a Pl(A2) allele was also highly associated with MI. The frequency of the 393 allele was significantly higher in African Americans than what has been reported for other populations. This study furthers not only extends the association of the 393 allele to VTE but has demonstrated an interaction with the Pl(A2) allele with respect to MI.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
myocardial infarction susceptibilityIAGP 5128481DNA:polymorphism:exonRGD 
myocardial infarction susceptibilityISOITGB3 (Homo sapiens)5128481; 5128481DNA:polymorphism:exonRGD 
myocardial infarction susceptibilityIAGP 5128481DNA:repeats:intronRGD 
myocardial infarction susceptibilityISONOS3 (Homo sapiens)5128481; 5128481DNA:repeats:intronRGD 
Thromboembolism susceptibilityIAGP 5128481DNA:repeats:intronRGD 
Thromboembolism susceptibilityISONOS3 (Homo sapiens)5128481; 5128481DNA:repeats:intronRGD 

Objects Annotated

Genes (Rattus norvegicus)
Itgb3  (integrin subunit beta 3)
Nos3  (nitric oxide synthase 3)

Genes (Mus musculus)
Itgb3  (integrin beta 3)
Nos3  (nitric oxide synthase 3, endothelial cell)

Genes (Homo sapiens)
ITGB3  (integrin subunit beta 3)
NOS3  (nitric oxide synthase 3)


Additional Information