RESUMO Introdução: As doenças cardiovasculares são responsáveis por alto grau de morbidade e mortalidade na população mundial. Em populações saudáveis, a estimativa do risco cardiovascular tem sido calculada a partir de modelos de predição derivados de estudos prospectivos e observacionais. O escore de Framingham é um algoritmo tradicionalmente utilizado como estratégia primária de prevenção de doenças cardiovasculares em pessoas assintomáticas em um período de 10 anos. Para a determinação desse escore são considerados como fatores de risco os níveis séricos de colesterol total, colesterol HDL, pressão sistólica, diabetes mellitus, tabagismo e idade dos pacientes. Objetivo: Avaliar se a prática de atividade física é uma variável importante capaz de modular o risco obtido pelo escore de Framingham. Métodos: Foram considerados dados de 1004 indivíduos, divididos em adultos (18 a 59 anos) e idosos (> 60 anos), usando o software Statistical Package for Social Sciences (SPSS) para as análises estatísticas e adotando-se o nível de significância de 5% (P < 0,05) para todos os testes aplicados. Resultados: A correlação entre os fatores idade, sexo, tabagismo, hipertensão arterial e níveis séricos de HDL e o escore de Framingham foi confirmada tanto no grupo adulto como no idoso. Adicionalmente, nossas análises demonstraram correlação estatisticamente significativa entre a prática de atividade física e o risco calculado por esse escore, ficando evidente que indivíduos adultos ou idosos que praticam atividade física moderada ou intensa apresentam menor risco de desenvolver doença cardiovascular num período de 10 anos. Conclusão: Nossos dados demonstram que a prática de atividade física moderada ou intensa pode modular o escore de Framingham e assim como idade, sexo, tabagismo, hipertensão arterial e níveis séricos de colesterol total e HDL, deve ser considerada entre os fatores de risco de doenças cardiovasculares.
Introduction: Cardiovascular diseases (CVD) figure among the most significant causes of morbidity and mortality in the world and, among genetic factors, the literature has demonstrated the crucial role of miRNAs and the relationship of physical activity with this pathology. Objective: To investigate the relationship between the functional capacity of exercise, the level of physical activity, and the polymorphism in the miRNA-146a gene in elderly individuals with and without CVD. Methods: This study, developed in a city in the southern region of Brazil, is characterized as cross-sectional. The sample for this study comprised 342 participants, aged 60 or over. The following aspects were analyzed: anthropometric characteristics, genetic profiles, diagnosis of CVD, functional capacity, and the level of physical activity. Results: A statistically significant association was observed between CVD and body mass index (BMI) (א² = 14.278; p = 0.0003), and 40.6% of elderly individuals with CVD were obese, while 31.5% of the normally developed elderly participants presented normal BMI. However, the genotype frequencies (p = 0.546; א² = 1.211) and 6MWT (p = 0.311; א² = 1.025) did not show a statistically signifi-cant association with CVD. Conclusion: Our results suggest that the polymorphism in the miRNA-146A (rs2910164) and functional capacity are not associated with CVD in the elderly. However, the BMI did demonstrate an association with this disease.
The objective of this study was to verify the possible association between Glutathione Stransferase genetic polymorphism and functional physical aspects in the elderly with and without type 2 diabetes mellitus (DM2), as well as the increased susceptibility to its development. To carry out this cross-sectional study, 5 mL of blood was collected from 45 elderly people. The polymorphism was detected by the multiplex polymerase chain reaction (GSTM1 and GSTT1 polymorphisms). Functional physical aspects were assessed using physical tests. For statistical analysis, the Shapiro-and Qui Square tests )²א( were used. The presence of the GSTM1 and GSTT1 genes were more prevalent. There was a significant association between GSTT1 null genotypes and the presence / absence of DM2. No association was found between genotypes and functional physical aspects. It is concluded that the nullity of the GSTT1 genotype is associated with the susceptibility of DM2, but without a statistically significant relationship with functional physical aspects.
The presence of mutations in dyslipidemia-related genes is of great importance for the outcome of procedures on patients with elevated levels of HDL cholesterol. This systematic review aims to describe the genetic variants in the mevalonate kinase genes in adults with dyslipidemia. A systematic search of the following databases was conducted: Scopus, Web of Science, Google Scholar and Bireme, using the keywords: "Mevalonate Kinase Gene", "Dyslipidemia", "Genetic Polymorphism", linked using the term "AND". The inclusion criteria consisted of articles published between 2008 and 2018, written in Portuguese or English, while the exclusion criteria were the removal of duplicated articles, books, theses and bibliographic reviews, tests not conducted on humans, tests conducted on children and other genes evaluated. The articles listed in this review demonstrate the role of the genetic polymorphism of the mevalonate-kinase gene (MVK) in an adult population. A comparison of results from different studies is often complicated because of the diverse study variables such as: tests used, population studied. The studies described in this review demonstrated that there is an association between genetic profiles and dyslipidemia. Many studies have shown that, besides the external factors and individuals’ behavioral habits, the presence of mutations in the mevalonate kinase gene is associated with dyslipidemia.
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