Níveis de alfa-tocoferol no soro e leite materno de puérperas atendidas em maternidade pública de Natal, Rio Grande do Norte

Abstract

Objectives: to evaluate levels of alpha-tocopherol i n t h e s e r u m a n d b re a s t -m i l k o f w o m e n a t v a r i o u s stages in lactation and to confirm whether nutrition a l l y a p p ro p r i a t e l e v e l s o f v i t a m i n E a re p re s e n t i n the milk given to the babies.Methods: thirty-two child-bearing women with an average age of 25 years took part in the study. 5 mL of blood and 2 mL of colostrum were collected, under fasting conditions,

Vitamin E concentration in human milk and associated factors: a literature review

“…The study by Garcia et al, 15 however, found a positive correlation between the biochemical nutritional status in alpha-tocopherol and its concentration in transitional milk (r = 0.456, p = 0.009), demonstrating the importance of adequate maternal nutritional status. A study performed in Russia also demonstrated this correlation.…”

“…However, Garcia et al 15 observed that the concentration of alphatocopherol, considering the infant's need (4 mg/day) 18 and the daily consumption of 780 mL/day of milk, indicates an apparent nutritional inadequacy of transitional milk in their study, conducted in Northeastern Brazil. Considering this fact, it has been observed that other studies also showed this possible insufficient supply, when analyzing the content of alpha-tocopherol in transitional and mature milk.…”

“…According to Garcia et al, 15 the presence of an association between the levels of alpha-tocopherol in plasma and in milk found only in the transition phase indicates that the vitamin transport mechanisms to the colostrum are more complex, probably involving other routes in addition to those that are predominant in transitional and mature milk. There is an open field for studies evaluating the association between the concentration of vitamin E in plasma and breast milk, especially in colostrum and mature milk.…”

Níveis de alfa-tocoferol no soro e colostro de lactantes e associação com variáveis maternas

“…As lactantes têm sido consideradas como grupo biologicamente vulnerável e sob risco de apresentar estado nutricional marginal ou deficiente em vários micronutrientes 8 . O estado nutricional materno constitui um determinante crítico do resultado da gravidez, tanto para a mãe como para o concepto 16 .…”

Comparação entre a concentração sérica de alfa-tocoferol de puérperas assistidas em maternidades públicas e privadas no Nordeste do Brasil

“…A correlação da concentração plasmática de alfa-tocoferol materno e sua influência na quantidade de vitamina E no leite humano foi comprovada na literatura. Garcia et al 28 encontraram correlação positiva entre concentrações adequadas de alfa-tocoferol sérico e seu aumento no leite de transição (r=0,456; p=0,009), evidenciando a importância de um bom estado nutricional materno em vitamina E na composição do leite humano.…”