Objective: to verify the existence of elements that justify the use of pharmacogenetics by the Brazilian nurse. Method: this is a quantitative, cross-sectional, observational, descriptive study, whose final sample was 67 individuals. The participants were healthy at the time of the study and reported a history of previous use and the occurrence of adverse effects by drugs commonly used and metabolized by CYP2C9. We collected 4 mL of venous blood for subsequent DNA extraction by salting out method and genotyping of the CYP2C9*2 and CYP2C9*3 polymorphisms, using Polymerase Chain Reaction in real time using Taqman assays. Results: the use of drugs metabolized by CYP2C9 was frequent (more than 75% of the individuals have already used between 2 or 4 of these drugs). Regarding adverse events, there were 19 perceived symptomatic occurrences associated with drugs metabolized by CYP2C9. The allele frequency of the polymorphism * 2 and * 3 in the population studied was 11.1% and 7.5%, respectively, and there was a coincidence between the presence of alleles of low enzyme activity and the occurrence of adverse effects. Conclusion: there are elements that justify the adoption of pharmacogenetics in the nursing care to reduce the occurrence of adverse reactions to drugs metabolized by CYP2C9.
A expressão "farmacogenética" indica a existência de variações na sequência de DNA que podem influenciar a maneira como o corpo responde aos medicamentos, tanto em relação à eficácia terapêutica quanto à ocorrência de reações adversas aos medicamentos. Apesar de muito bem estabelecida e aplicada internacionalmente, o uso da farmacogenética ainda não é uma realidade no Brasil, especialmente no SUS. O objetivo geral desse trabalho foi produzir uma cartilha informativa sobre farmacogenética e aplicar essa cartilha para a população frequentadora do campus da USP de Ribeirão Preto, e fornecer de forma gratuita aos participantes um exame genético com a determinação dos alelos *2 e *3 da enzima CYP2C9, tema da cartilha. O presente projeto de extensão foi feito em paralelo a uma pesquisa clínica cujos resultados serão submetidos para revistas científicas e não serão reproduzidos aqui. Os participantes receberam informações gerais sobre farmacogenética de forma oral, em seguida leram a cartilha e a avaliaram através de um questionário. Esse estudo mostrou que, com o uso de materiais e método simples, é possível trazer a farmacogenética até mesmo para leigos, e isto pode ser uma importante abordagem para estimular o uso dessas informações por profissionais da saúde.Palavras-chave: Citocromo P-450 CYP2C9. Farmacogenética. Efeitos Colaterais. Reações Adversas Relacionadas a Medicamentos. A B S T R A C TThe term "pharmacogenetics" indicates the existence of variations in the DNA sequence that may influence the way our body responds to drugs, both in terms of therapeutic efficacy and the occurrence of adverse drug reactions. Although very well established and applied internationally, the use of pharmacogenetics is not yet a reality in Brazil, especially in SUS. The general objective of this work was to produce an
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