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Polymorphism in apolipoprotein(a) kringle IV 37 (Met/Thr): Frequency in a London population and its association with coronary artery disease

Syrris, P; Schwartzman, R; Kaski, JC; Carter, N; (1997) Polymorphism in apolipoprotein(a) kringle IV 37 (Met/Thr): Frequency in a London population and its association with coronary artery disease. CLIN CARDIOL , 20 (10) 870 - 872.

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Abstract

Background: A raised concentration of lipoprotein(a) [Lp(a)] in human plasma has been considered as a risk factor for coronary artery disease (CAD). Apolipoprotein(a) and plasminogen genes are exceptionally similar to a variable number of plasminogen-like kringle IV repeats in the apo(a) gene. Polymorphisms have been previously identified in the apolipoprotein(a) kringle IV 37.Hypothesis: In order to determine the frequency of the apolipoprotein(a) kringle IV 37 Met(66)-->Thr polymorphism in a London-based population and to assess the relationship of this polymorphism with CAD in Caucasian patients, we genotyped two groups of people of different ethnic origin (Caucasian and Afro-Caribbean) for the mutation using standard polymerase chain reaction (PCR) techniques.Methods: The first group consisted of 182 unrelated Caucasian patients (107 men and 75 women, mean age 59.7 +/- 10.2 years) recruited at St. George's Hospital. They were defined as patients with 0, 1 or greater than or equal to 2 vessel disease patients depending on the degree of stenosis in none, one, or several major epicardial arteries. The second group comprised 64 unrelated patients of Afro-Caribbean origin attending a hypertension clinic at St. George's Hospital.Results: It was shown that the prevalence of the Met(66)-->Thr mutation is markedly higher in Caucasians than in Afro-Caribbeans and that this mutation is not associated with either Lp(a) levels or severity of CAD.

Type:Article
Title:Polymorphism in apolipoprotein(a) kringle IV 37 (Met/Thr): Frequency in a London population and its association with coronary artery disease
Keywords:apolipoprotein(a), kringle IV 37, polymorphism, coronary artery disease
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science

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