Abstract

RUIZ, Martha et al. APOE gene polymorphism analysis in Barranquilla, Colombia . Biomédica [online]. 2016, vol.36, n.1, pp.52-58. ISSN 0120-4157.  https://doi.org/10.7705/biomedica.v36i1.2612.

Introduction: The genetic variability present in the APOE gene polymorphism is considered an important factor associated with predisposition to diseases affecting lipid metabolism, as well as heart diseases and Alzheimer´s disease, among others. Understanding it as a risk factor in different populations and ethnic groups is a useful tool. Objective: To analyze the APOE gene polymorphism and determine allelic and genotypic frequencies of a representative sample of population from Barranquilla, Colombia. Materials and methods: We performed a descriptive and comparative study. The sample size was 227 unrelated individuals from Barranquilla, Colombia Results: The most frequent allele was the e 3, with 85%, followed by the e 4 allele (13%) and e 2 (1.8%). The genotypes found were: e 3/ e 3: 71.8%, e 3/ e 4: 24.2%, e 2/ e 3: 2.2%, e 2/ e 4: 1.3% and e 4/ e 4: 0.4%. The e 2/ e 2 genotype was not found in this study. The sample exhibited the Hardy-Weinberg equilibrium. Conclusion : The frequency of the e 3 allele and the e 3/ e 3 genotype was similar to that reported in the literature in countries like Brazil, Mexico, Colombia, and in some Colombian Amerindian ethnic groups. The e 2/ e 2 genotype was absent. This result is consistent with those found in other population groups worldwide. The frequency of the e 4 allele and the genotypes associated in this population could be related to the presence of diseases such as hypercholesterolemia, myocardial infarction and Alzheimer.

Keywords : Apolipoproteins E; polymorphism; genetic; population; alleles; Colombia.

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