| The threshold for immune cell reactivity to milk antigens decreases in cow's milk allergy with intestinal symptoms. | |
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MedLine Citation:
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PMID: 8876554 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: In cow's milk allergy (CMA) with intestinal symptoms, peripheral blood mononuclear cells (PBMCs) secrete tumor necrosis factor-alpha (TNF-alpha), altering intestinal function. However, the type of cow's milk protein (CMP) that triggers symptoms (intact or intestinally processed) is not known, and neither is the minimal amount required. METHODS: PBMCs were isolated from infants with active CMA or cured infants just before a new challenge and stimulated with intact or intestinally processed CMP. Supernatants were tested for cytokine content and for their ability to perturb intestinal barrier capacity, measured in Using chambers in HT29-19A intestinal cells. RESULTS: PBMCs from infants with active CMA secreted more TNF-alpha, when they were stimulated with intact rather than intestinally processed CMPs, and more TNF-alpha than PBMCs from cured infants. Accordingly, supernatants from PBMCs stimulated with intact but not intestinally processed CMPs significantly increased intestinal permeability. The CMP concentration required to trigger TNF-alpha secretion capable of altering intestinal function was very small in infants with active CMA (approximately 2 micrograms/ml), but about 300 times higher in cured infants. CONCLUSION: Intact rather than intestinally processed proteins stimulate PBMCs to release TNF-alpha and alter intestinal barrier capacity. The threshold for PBMC reactivity to milk antigens drops considerably during active CMA with intestinal symptoms. |
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Authors:
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N Benlounes; C Dupont; C Candalh; M A Blaton; N Darmon; J F Desjeux; M Heyman |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of allergy and clinical immunology Volume: 98 ISSN: 0091-6749 ISO Abbreviation: J. Allergy Clin. Immunol. Publication Date: 1996 Oct |
Date Detail:
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Created Date: 1996-11-27 Completed Date: 1996-11-27 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 1275002 Medline TA: J Allergy Clin Immunol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 781-9 Citation Subset: AIM; IM |
Affiliation:
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Institut National de la Santé et de la Recherche Médicale (U290), Hôpital St. Lazare, Paris, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cattle Cytokines / metabolism Dose-Response Relationship, Immunologic Humans Immunity, Cellular Immunity, Mucosal Infant Intestinal Absorption Leukocytes, Mononuclear / immunology* Milk Hypersensitivity / immunology* Milk Proteins / chemistry, immunology* Peptide Fragments / immunology Tumor Cells, Cultured Tumor Necrosis Factor-alpha / secretion* |
| Chemical | |
Reg. No./Substance:
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0/Cytokines; 0/Milk Proteins; 0/Peptide Fragments; 0/Tumor Necrosis Factor-alpha |
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