title: Interlaboratory evaluation of a cow's milk allergy mouse model to assess the allergenicity of hydrolysed cow's milk based infant formulas.
abstract: This study describes two phases of a multi-phase project aiming to validate a mouse model for cow's milk allergy to assess the potential allergenicity of hydrolysed cow's milk based infant formulas (claim support EC-directive 2006/141/E). The transferability and the discriminatory power of this model was evaluated in 4 research centers. Mice were sensitized by oral gavage with whey or extensively hydrolysed whey (eWH) using cholera toxin as an adjuvant. Whey-specific antibodies, mMCP-1 levels, anaphylactic shock symptoms, body temperature and the acute allergic skin response were determined upon whey challenge. In phases I and II, all 4 centers detected elevated levels of whey-specific IgE/IgG1 in whey sensitized animals. Elevated levels of mMCP-1, anaphylactic symptoms, body temperature drop and acute allergic skin response were scored upon whey challenge in 3 out of 4 research centers. In contrast, none of the evaluated parameters were elevated in eWH orally exposed groups. The cow's milk allergy mouse model is capable to distinguish the sensitizing capacity of complete or hydrolysed cow's milk protein. The model uses straightforward parameters relevant to food allergic responses and can be effectively transferred between different laboratories. We propose this mouse model as a new strategy for the screening of new hypoallergenic cow's milk formulas.
authors.affiliation: Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands. e.c.a.m.vanesch@uu.nl
authors.forename: B C A M
authors.initials: BC
authors.lastname: van Esch
authors.forename: J H M
authors.initials: JH
authors.lastname: van Bilsen
authors.forename: P V
authors.initials: PV
authors.lastname: Jeurink
authors.forename: J
authors.initials: J
authors.lastname: Garssen
authors.forename: A H
authors.initials: AH
authors.lastname: Penninks
authors.forename: J J
authors.initials: JJ
authors.lastname: Smit
authors.forename: R H H
authors.initials: RH
authors.lastname: Pieters
authors.forename: L M J
authors.initials: LM
authors.lastname: Knippels
mesh_terms: D000707:Anaphylaxis / Q000209:etiology / Q000276:immunology; D000818:Animals; D000831:Animals, Newborn; D001831:Body Temperature; D002417:Cattle; D004195:Disease Models, Animal; D005260:Female; D006801:Humans; D007223:Infant; D041943:Infant Formula; D007231:Infant, Newborn; D007753:Laboratories; D008407:Mast Cells / Q000187:drug effects; D051379:Mice; D008809:Mice, Inbred C3H; D016269:Milk Hypersensitivity; D008894:Milk Proteins / Q000008:administration & dosage / Q000276:immunology*; D015203:Reproducibility of Results; D012882:Skin Tests; D000067816:Whey Proteins
chemical_list: D008894:Milk Proteins; D000067816:Whey Proteins