RESUMO
La investigación en enfermería tiene la misión de mejorar la salud humana y el bienestar general de las personas. No se limita a la generación de conocimiento, busca la integración de buenas prácticas clínicas y la educación continua. Para lograrlo es necesario identificar las necesidades insatisfechas de los pacientes, y con ello mejorar el servicio y la calidad de la experiencia que se brinda al paciente.
Nursing research has the mission of improving human health and the overall well-being of individuals. It is not limited to generating knowledge; it seeks integration of good clinical practices and continuous education. To achieve this, it is necessary to identify unmet patient needs and thereby improve service and quality of the experience provided to patients.
Assuntos
Comunicação Interdisciplinar , Pesquisa em EnfermagemRESUMO
OBJECTIVE: To evaluate the independent and joint effects of dietary folate, vitamin B(12) consumption and methylenetetrahydrofolate reductase (MTHFR) polymorphisms (677C>T and 1298A>C) on the circulating folate and homocysteine (Hcy) levels among Mexican women of reproductive age. DESIGN: A cross-sectional, population-based study. SUBJECTS: The first 130 healthy non-pregnant women (aged 16-34 years) who agreed to participate in a reproductive cohort in Morelos, Mexico. MAIN OUTCOME MEASUREMENTS: Dietary intakes of vitamin B(12) and folate were estimated using a semiquantitative food frequency questionnaire. MTHFR 677C>T and 1298A>C polymorphisms were ascertained using the PCR-based method. Serum levels of Hcy and folate were determined using high-performance liquid chromatography and radioimmunoassay, respectively. RESULTS: Genotype frequencies for the MTHFR 677C>T polymorphism were 21.5% (CC), 52.3% (CT) and 26.2% (TT) among Mexican women. Of the population, 22% had the MTHFR 1298AC genotype, while no individual carried the 1298CC genotype. We observed an increased level of Hcy among carriers of the 677TT genotype, compared to carriers of the 677CC genotype. The highest level of Hcy was observed among MTHFR 677TT carriers with low B(12) intake (<2.0 microg/day), which resulted with a significant interaction (P=0.01). CONCLUSION: Vitamin B(12) is an important determinant of Hcy levels in Mexico. Supplementation of folic acid with vitamin B(12) may be preferable when the MTHFR 677T variant allele is prevalent.