A Possible Role of Elevated Breast Milk Lactoferrin and the Cytokine IL-17 Levels in Predicting Early Allergy in Infants: A Pilot Study

Polonkai, E. and Gyimesi, E. and Kovács, I. and Csillag, A. and Balla, Gy. and Rajnavölgyi, É. and Bácsi, A. and Sipka, S. (2016) A Possible Role of Elevated Breast Milk Lactoferrin and the Cytokine IL-17 Levels in Predicting Early Allergy in Infants: A Pilot Study. Acta Alimentaria, 45 (2). pp. 157-162. ISSN 0139-3006

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Abstract

In this study, we examined the relationship between levels of lactoferrin (LF) and IL-17 in human serum and breast milk and the development of allergy in children. LF and IL-17 levels were determined by ELISA in healthy (n=19) and allergic mothers (n=21) on the 5^th day after delivery. Two years later, information on breastfeeding and allergic outcomes was collected by questionnaires from parents of both groups and district child care nurses. Significantly higher concentrations of LF were found in the breast milk of allergic mothers compared to the healthy controls. At 2 years of age, only those three infants became allergic from the atopic group in whose starting breast milk samples a very high LF level (306 μg mg^–1 protein) or simultaneously elevated concentrations of LF and IL-17 were measured. These findings indicate that the very early measurement of LF and IL-17 levels in the breast milk of allergic mothers may help to predict the allergy development in their infants.

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