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J. Bras. Patol. Med. Lab. (Online) ; 54(3): 138-145, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-954387

ABSTRACT

ABSTRACT Introduction: Arterial thrombosis is considered a multifactorial disease, resulting from the interaction of genetic and acquired risk factors. Objectives: The aim of this study was to investigate the presence of the polymorphism in inhibitor of plasminogen activator type 1 (PAI-1) and apolipoprotein E (ApoE) genes and its interactions with PAI-1 levels and lipids and apolipoprotein profiles, respectively, as well as the frequencies of these polymorphisms and their association with thrombosis. Methods: Ninety-seven patients [48 with arterial ischemic stroke (IS) and 49 with peripheral arterial disease (PAD)], treated at the hematology medical service were included in this study. Polymorphisms were also investigated in 201 control subjects. Polymorphisms were investigated by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: For the PAI-1 polymorphism, there were 54.2% heterozygous (HT) genotypes and 12.5% homozygous (HM) genotypes in the patients' group, and 52.7% HT genotypes and 21.3% HM genotypes in the controls. For the ApoE polymorphism, there were 56.3% (ε3ε3), 6.3% (ε4ε4), 8.3% (ε2ε3), 4.2% (ε2ε4) and 24.9% (ε3ε4) in the patients, and 61.2% (ε3ε3), 4.5% (ε4ε4), 8% (ε2ε3), 4.5% (ε2ε4) and 21.8% (ε3ε4) in the controls. Conclusion: No significant difference was observed by comparing patients and controls. In this study, no association was found between the presence of the evaluated polymorphisms and the occurrence of thrombotic events.


RESUMO Introdução: A trombose arterial é considerada uma doença multifatorial, resultante da interação de fatores de risco genéticos e adquiridos. Objetivos: O objetivo deste estudo foi investigar a presença dos polimorfismos nos genes do inibidor da ativação do plasminogênio tipo 1 (PAI-1) e da apolipoproteína E (ApoE), bem como suas interações com níveis de PAI-1 e lipídios e perfis de apolipoproteína, respectivamente, além das frequências desses polimorfismos e sua associação com trombose. Métodos: Noventa e sete pacientes [48 com acidente vascular cerebral isquêmico arterial (AVC) e 49 com doença arterial periférica (DAP)], tratados no serviço médico de hematologia, foram incluídos neste estudo. Os polimorfismos também foram investigados em 201 indivíduos-controle. Os polimorfismos foram investigados por reação em cadeia da polimerase-fragmento de restrição polimorfismo (PCR-RFLP). Resultados: Para o polimorfismo PAI-1, havia 54,2% genótipos heterozigotos (HT) e 12,5% genótipos de homozigoto (HM) no grupo dos pacientes, e 52,7% genótipos HT e 21,3% genótipos HM nos grupos-controle. Para o polimorfismo da ApoE, havia 56,3% (ε3ε3), 6,3% (ε4ε4), 8,3% (ε2ε3), 4,2% (ε2ε4) e 24,9% (ε3ε4) nos pacientes, e 61,2% (ε3ε3), 4,5% (ε4ε4), 8% (ε2ε3), 4,5% (ε2ε4) e 21,8% (ε3ε4) nos controles. Conclusão: Nenhuma diferença significativa foi observada comparando pacientes e controles. Neste estudo, não foi encontrada associação entre a presença dos polimorfismos avaliados e a ocorrência de eventos trombóticos.

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