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  • Title: Apolipoprotein E polymorphism and stroke in a population from eastern Turkey.
    Author: Duzenli S, Pirim I, Gepdiremen A, Deniz O.
    Journal: J Neurogenet; 2004; 18(1):365-75. PubMed ID: 15370197.
    Abstract:
    Human apolipoprotein E (apo E) alleles are polymorphic with significantly different frequencies among different ethnic groups and have been associated with increased risk of coronary heart disease, and postulated as a major genetic susceptibility locus for Alzheimer's disease. Studies undertaken in different populations have shown different association patterns between apo E genotype and stroke. The aim of this study was to determine the risk of apo E genotype in stroke patients living in the eastern part of Turkey. The apo E genotypes and allele frequencies of 229 individuals from the same geographic area were determined by polymerase chain reaction and restriction fragment length polymorphism, of which 103 were patients with a documented history of stroke without other apparent dementia and 126 age-matched healthy subjects as a control group. A reduced E3/4 genotype frequency was found in subjects with stroke and the E2/3 genotype frequency was elevated in patients with previous stroke. There was no association between apo E epsilon4 allele and stroke. The APOE alleles had divergent effects in this population. Association between APOE (the gene) alleles and stroke in this population may be altered due to interaction with other genetic effects. The effects of APOE alleles and genotypes require further study in different populations.
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