Dimenstein, RobertoDametto, Juliana Fernandes dos Santos2018-06-192018-06-192018-04-25DAMETTO, Juliana Fernandes dos Santos. Avaliação da suplementação pós-parto com vitamina E sobre a concentração de retinol e alfa-tocoferol no soro e leite maternos. 2018. 140f. Tese (Doutorado em Bioquímica) - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, 2018.https://repositorio.ufrn.br/jspui/handle/123456789/25469One of the major public health nutritional problems in the world is vitamin A deficiency, especially in developing countries, with the groups considered to be at risk for pregnant women, postpartum women and children in early childhood. Therefore, the main objective of this study was to evaluate the effect of alphatocopherol supplementation in the immediate postpartum on the concentration of retinol and alpha-tocopherol in serum and human milk up to 60 days postpartum. This study was prospective, controlled, randomized, starting with 80 women attended for delivery in two public maternity hospitals in Rio Grande do Norte. In the immediate postpartum period, these women were allocated to the control groups (n = 18) without any intervention; supplemented 1 (n = 16) receiving the dose of 400 IU of RRR-alpha-tocopherol; and supplemented 2 (n = 19) receiving the dose of 800 IU of RRR-alpha-tocopherol. Blood and maternal milk were collected in 4 moments: 1 o (0 hour) before supplementation, 20o, 30o, 60o days postpartum, and maternal milk was also collected in 24 hours and 7 days after the first collection, totaling 6 milk samples. Retinol and alpha-tocopherol were analyzed by High Performance Liquid Chromatography. Supplementation with the 800 IU dose of RRR-alpha-tocopherol guaranteed higher circulating concentrations of retinol up to 30 days postpartum and alpha-tocopherol up to 20 days. The impact of alpha-tocopherol supplementation on the concentration of retinol in breast milk can be observed both in the group receiving the dose of 400 IU of RRR-alpha-tocopherol and the one that received the dose of 800 IU, as it caused an increase in concentration of retinol 24 hours after supplementation. Regarding the analysis of alpha-tocopherol in breast milk, the increase in alpha-tocopherol concentration provided 24 hours after supplementation was high in both supplemented groups, but in group 2 this increase was maintained until the 7th day of the study. Evaluating the supply of breast milk in relation to the daily requirement of vitamin A for infants up to 6 months of age (400 g / day), the supplemented group 1 contemplated the requirement established only in the production of milk up to 24 hours postpartum and supplemented group 2 completed the application by the 20th day after delivery. Thus, it is concluded that if maternal nutritional status reflects retinol and alpha-tocopherol concentrations in maternal serum and milk, vitamin E supplementation was effective for both nutrients during the analyzed period. dose of vitamin E administered.Acesso AbertoVitamin AAlfa-tocoferoSuplementação nutricionalPuerpérioLeite humanoDeficiência de vitamina AdoctoralThesisCNPQ::CIENCIAS BIOLOGICAS::BIOQUIMICA