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Keywords:

  • Breast mild;
  • casein hydrolysate;
  • cow's mild;
  • early infant feeding;
  • macromolecular absorption;
  • serum α-lactalbumin;
  • serum IgE;
  • tolerance

A group of 129 infants were randomly assigned at birth to one of three feeding regimens: human milk (HM), cow's milk formula (CMF) or a casein hydrolysate formula (CHF) during the first 3 days of life. Blood samples were taken on at 4 days and at 2, 4, 8, 12 and 24 months of age. Macromolecular absorption was analysed by measuring the serum concentration of human α-lactalbumin (S-α-LA) with a competitive radioimmunoassay (RIA). Total serum IgE was measured by RIA. A family history of allergy correlated to the proportion of infants with allergic symptoms both at 24 and 36 months of age (p= 0.03 and p= 0.04 respectively). In none of the three groups did correlation exist between the duration of breastfeeding and serum α-LA, serum IgE, family history of allergy, frequency of allergic symptoms and proportion of infants with infections.