Concentração de micronutrientes em mães e seus recém-nascidos por ocasião do parto
DOI:
https://doi.org/10.7322/jhgd.19965Palavras-chave:
gestantes, recém-nascidos, sangue de cordão, micronutrientes, cobre, licopeno, β, caroteno, α, tocoferol, retinolResumo
Trata-se de estudo transversal com uma amostra sequencial de conveniência de 73 gestantes, não fumantes, sem intercorrências durante a gravidez e seus recém-nascidos normais, objetivando comparar concentrações plasmáticas de retinol, β caroteno, licopeno, α tocoferol e cobre entre mães e recém-nascidos. Colheu-se sangue da parturiente e do cordão umbilical (após dequitação) para dosagem dos micronutrientes. Retinol, β caroteno, licopeno e α tocoferol foram dosados por HPLC e o cobre por espectrofotometria de absorção atômica. Para análise foram separados 2 grupos:- grupo 1, 38 gestantes com suplementação vitaminico-mineral pelo menos no último trimestre da gravidez e grupo 2, 35 gestantes que não haviam recebido suplementação. As comparações estatísticas foram pelo teste t de Student ou pelo teste de Wilcoxon, com um α crítico de 0,05. Os dois grupos de mães eram símiles quanto a idade, paridade, IMC e a baixa ingestão de calorias e de micronutrientes. Os grupos de recém-nascidos não evidenciaram diferença quanto a sexo, peso, comprimento e perímetro cefálico. As concentrações plasmáticas maternas do grupo 1 foram maiores para o retinol(p = 0,0034) e a tocoferol(p = 0,0279). β caroteno, licopeno e cobre não evidenciaram diferenças entre os dois grupos de mães. Nos dois grupos de recém-nascidos as concentrações de retinol, tocoferol e cobre foram semelhantes e praticamente não houve concentrações detectáveis de licopeno e α caroteno. Em ambos os grupos retinol, a tocoferol e cobre apresentaram maiores concentrações nas mães do que nos recém-nascidos, p = 0,0003, p = 0,0001, p = 0,0001, respectivamente. Conclui-se que as concentrações nos recém-nascidos foram sempre menores do que as maternas, independentemente da ingestão e da suplementação durante a gravidez.Referências
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