Detection of cow's milk proteins and minor components in human milk using proteomics techniques.
2012
Cow’s milk proteins (CMPs) are the best characterized food allergens. The aim of this study was to investigate cow’s milk allergens in human colostrum of term and preterm newborns’ mothers, and other minor protein components by proteomics techniques, more sensitive than other techniques used in the past. Sixty-two term and 11 preterm colostrum samples were collected, subjected to a treatment able to increase the concentration of the most diluted proteins and simultaneously to reduce the concentration of the proteins present at high concentration (Proteominer Treatment), and subsequently subjected to the steps of proteomic techniques. The most relevant finding in this study was the detection of the intact bovine alpha-S1-casein in human colostrum, then bovine alpha-1-casein could be considered the cow’s milk allergen that is readily secreted in human milk and could be a cause of sensitization to cow’s milk in exclusively breastfed predisposed infants. Another interesting result was the detection, at very l...
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