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  • Title: Defective tumor necrosis factor-alpha production in infants with cow's milk allergy.
    Author: Osterlund P, Järvinen KM, Laine S, Suomalainen H.
    Journal: Pediatr Allergy Immunol; 1999 Aug; 10(3):186-90. PubMed ID: 10565559.
    Abstract:
    As an aid to clarifying the role of immune mechanisms in the development of cow's milk allergy (CMA) in suckling infants, we studied the capacity of peripheral blood mononuclear cells (PBMC) to produce tumor necrosis factor-alpha(TNF-alpha) in vitro. The study population consisted of 43 infants, aged 0.12-11.2 months; of these, 31 had challenge-proven cow's milk allergy manifested with either skin or gastrointestinal symptoms or both. In addition, 12 healthy infants were studied as controls. The spontaneous, unstimulated and mitogen-induced production of TNF-alpha and interferon-gamma (IFN-gamma) by isolated peripheral blood leukocytes was evaluated. TNF-alpha and IFN-gamma production of PBMC was significantly lower in infants with cow's milk allergy than in healthy children. Our results indicate that, in infants with CMA, the function of TNF-alpha-producing cells is defective. This might disturb the development of oral tolerance and thereby lead to cow's milk allergy. These results may help to clarify the etiopathology of CMA.
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