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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

ANÁLISE DO POLIMORFISMO NA REGIÃO PROMOTORA -911 NO GENE DA 3-HIDROXIMETILGLUTARIL-COA REDUTASE (HMGCR) EM PACIENTES COM DOENÇA ARTERIAL CORONARIANA.

Sousa, Stanley Silvano 27 August 2015 (has links)
Made available in DSpace on 2016-08-10T10:39:08Z (GMT). No. of bitstreams: 1 STANLEY SILVANO SOUSA.pdf: 1573160 bytes, checksum: 779804c156f10ab50a1b61b85240a0ab (MD5) Previous issue date: 2015-08-27 / The main regulatory enzyme of cholesterol biosynthesis is hydroxyl-methylglutaryl-CoA reductase (HMGCR) and several polymorphisms are described in the gene encoding this enzyme. Currently, associations between genetic polymorphisms and cardiovascular disease are investigated in order to better understand the genetic factors associated with such diseases. The objective of this study was to evaluate the frequency of -911 polymorphism (rs3761740) in the promoter region of HMGCR gene in patients with coronary artery disease (CAD), as well as the possible associations between the resultant genotypes and clinical features of patients with CAD. Genomic DNA isolated from patients blood samples were analyzed for the detection of genetic polymorphism, by using polymerase chain reaction (PCR) analysis and restriction fragment length polymorphism (RFLP). Allele frequencies obtained for the -911 polymorphism (rs3761740) in the promoter region of the HMGCR gene were: A (51.2%) and C (48.8%). The genotype frequencies obtained were: AA (11.9%), AC (78.6%) and CC (9.5%). Significant associations between the diferente genotypes and clinical features of the patients with CAD were not detected in this study. Our results show that -911 polymorphism (rs3761740) in the promoter region of the HMGCR gene was not associated with clinical and laboratory characteristics in patients with coronary artery disease. / A principal enzima regulatória da biossíntese do colesterol é a hidrox-imetilglutaril-CoA redutase (HMGCR) e vários polimorfismos são descritos no gene que codifica esta enzima. Atualmente, associações entre tais polimorfismos genéticos e as doenças cardiovasculares são investigadas no sentido de compreender melhor os fatores genéticos associados a essas doenças. O objetivo deste estudo foi avaliar a frequência do polimorfismo -911(rs3761740) na região promotora do gene da HMGCR em pacientes com doença arterial coronariana (DAC), bem como as possíveis associações entre os genótipos encontrados e os aspectos clínicos dos pacientes com DAC. O DNA genômico isolado das amostras de sangue dos pacientes foi analisado para detecção do polimorfismo genético, por meio da reação em cadeia da polimerase (PCR) e análise de polimorfismos de comprimento de fragmentos de restrição (RFLP). As frequências alélicas obtidas para o polimorfismo -911 (rs3761740) na região promotora do gene HMGCR foram: A (51,2%) e C (48,8%). As frequências genotípicas obtidas foram: AA (11,9%), AC (78,6%) e CC (9,5%). Associações significativas entre os genótipos encontrados e os aspectos clínicos dos pacientes com DAC não foram detectadas neste estudo. Nossos resultados permitem concluir que polimorfismo -911(rs3761740) na região promotora do gene da HMGCR não esteve associado aos aspectos clínicos e laboratoriais em pacientes com doença arterial coronariana.

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