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publicado em 10/04/2013 às 15h26:00
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Breastmilk reduces additive protection against infections

Use of additive milk for babies less than 1.5 kg can decrease the protection against bacterial infections

 
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Foto: Marcos Santos/USP Imagens
Breast milk has naturally protein called lactoferrin
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Breast milk has naturally protein called lactoferrin

Research of the Faculty of Medicine of USP (USP) shows that the use of breast milk additive, with the goal of keeping the advantages of breastfeeding and increase the supply of nutrients for infants with less than 1.5 kilogram (kg), can lower the protection against infections by these bacteria.

The study of nutritionist Letícia Fuganti fields indicates that the application of additive to human milk breast milk supplemented with iron at a concentration of 0.28 milligrams (mg) per gram (g) of additive can decrease the ability of the breast to protect against infection by Escherichia coli.

Breast milk has naturally a protein called lactoferrin, which binds iron ions present in the secretion. With this action, the iron, which is essential for most pathogenic bacteria is not available in large quantity. Thus, lactoferrin reduces the growing number of pathogens, and therefore the incidence of infection in infants who consume milk.

However, demand nutrition of neonates less than 1.5 kg of additive is added iron and other nutrients to human milk. "Due to the increased nutritional requirements of this group, the additive of breast milk can be used in the environment hospital, "says nutritionist.

She wanted to see if the addition of additive milk supplemented with iron decreased the bactericidal effect of milk. The objective was to compare bacterial growth in colostrum versus pure colostrum to milk additive supplemented with iron, says the nutritionist.

In samples of colostrum, dietitian the growth of bacteria tested separately, after a day of incubation in a greenhouse. Letícia tested Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa, relating to different types of infections. The milk used was collected within two days of postpartum mothers of hospitalized after childbirth in a hospital Paraná.

The results from pure colostrum and colostrum doped human milk supplemented with iron, according to nutritionist, were equal to Staphylococcus aureus and Pseudomonas aeruginosa. However, for Escherichia coli, there was a significant difference with increased growth of microorganisms in the presence of iron additive.

Source: Isaude.net
   Palavras-chave:   Additive breast milk    Breast milk    Colostrum    Escherichia coli    Faculty of Medicine    USP    FMUSP   
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