Banca de DEFESA: ANA GABRIELLA COSTA LEMOS DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ANA GABRIELLA COSTA LEMOS DA SILVA
DATA : 20/06/2018
HORA: 08:30
LOCAL: Sala de aula 1 do Núcleo de Estudos em Saúde Coletiva - NESC/UFRN
TÍTULO:

Nutritional status in vitamin A and vitamin E of women over the course of lactation.

PALAVRAS-CHAVES:

Breastfeeding; Retinol; Alpha-tocopherol; Lactation; Food consumption.

PÁGINAS: 102
GRANDE ÁREA: Ciências da Saúde
ÁREA: Nutrição
RESUMO:

In lactation, women need a greater nutritional intake both to replenish nutrients secreted in milk and to ensure adequate nutritional status, as in vitamins A and E, essential for growth, immunity and antioxidant status. Thus, this study aims to evaluate the nutritional status of vitamin A and vitamin E in women following lactation and the relation of habitual dietary intake with the concentrations of vitamins in serum and breast milk. The study was a longitudinal study of 43 lactating women recruited at a public hospital located in Natal-RN, Brazil. The collection of milk, blood and dietary information occurred in three moments: the first between 25 and 74 days postpartum; the second about 30 days after the first and the third 30 days after the second. Retinol and alpha-tocopherol from serum and maternal milk were analyzed by High Performance Liquid Chromatography. Serum alpha-tocopherol <12 μmol / L (517 μg / dL) in serum and <1.05 μmol / L (30 μg / dL) dL) were indicative of low concentrations. The dietary inadequacy of these vitamins was analyzed according to the Estimated Average Requirement (EAR) for lactating women, with intrapersonal variation adjusted by the Multiple Source Method, and the intake was also classified by quartiles of consumption. Serum retinol varied around 1.65 μmol / L following the lactation, with 5% of low concentrations in the first collection. Serum alpha-tocopherol decreased during lactation from 30.18 μmol / L in the first collection to 25.49 μmol / L in the third (p = 0.008), with a consequent increase in the percentage of deficiency. The concentrations of vitamins in breast milk presented similar values among the samples. Inadequate dietary intake of vitamin A and vitamin E was found in 58% and 100% of infants, respectively. When evaluating the relationships between the indicators, there was a positive correlation only between serum retinol and habitual intake of vitamin A (r = 0.403, p = 0.007), and higher concentrations of serum retinol were found in infants classified in the highest quartile of consumption vitamin A (p = 0.031). Following lactation, there was a high inadequacy in the consumption of vitamins and reduction of serum alpha-tocopherol, while the concentration of vitamins in milk remained unchanged. Dietary intake of vitamin A has been shown to influence serum retinol, reinforcing the importance of adequate nutrition and monitoring of lactation deficiency.

MEMBROS DA BANCA:
Interno - 2646462 - BRUNA LEAL LIMA MACIEL
Externo à Instituição - ILLANA LOUISE PEREIRA DE MELO - F.M.Nassau
Presidente - 2578592 - KARLA DANIELLY DA SILVA RIBEIRO RODRIGUES