PMID- 15672476 OWN - NLM STAT- MEDLINE DCOM- 20050303 LR - 20171116 IS - 1613-4125 (Print) IS - 1613-4125 (Linking) VI - 48 IP - 5 DP - 2004 Oct TI - Cow's milk allergens identification by two-dimensional immunoblotting and mass spectrometry. PG - 363-9 AB - Cow's milk allergy (CMA) has become a common disease in early childhood, its prevalence ranging from 1.6% to 2.8% among children younger than 2 years of age. The role of different cow's milk protein (CMP) in the pathogenesis of CMA is still controversial. Even if the proteins most frequently and most intensively recognized by immunoglobulin E (IgE) seem to be the most abundant in milk (caseins and beta-lactoglobulin), with an although great variability all milk proteins appear to be potential allergens, even those that are present in trace amounts (i.e., lactoferrin, IgG, and BSA). In this work proteomics techniques have been applied for CMP allergens analysis. Allergens have been identified by immunoblotting following resolution of CMP components by two-dimensional electrophoresis. Sera from 20 milk-allergic subjects, as proven by oral provocation test, CAP-RAST and skin prick test, have been used for cow's milk major allergen identification. Cow's milk proteins and their isoforms were identified by matrix assisted laser desorption/ionization-time of flight (MALDI-TOF)-mass spectrometry. In our group of patients, the prevalence of CMP allergens, i.e., the total number of subjects sensitized to CMP divided by the total number of the subjects enrolled in the study, was: 55% alpha(s1)-casein, 90% alpha(s2)-casein, 15% beta-casein, 50% kappa-casein, 45% beta-lactoglobulin, 45% BSA, 95% IgG-heavy chain, 50% lactoferrin, and 0% alpha-lactalbumin. FAU - Natale, Massimo AU - Natale M AD - CNR-lnstitute of Science of Food Production, Section of Torino, Italy. FAU - Bisson, Carolina AU - Bisson C FAU - Monti, Giovanna AU - Monti G FAU - Peltran, Amalia AU - Peltran A FAU - Garoffo, Lorenza Perono AU - Garoffo LP FAU - Valentini, Sabina AU - Valentini S FAU - Fabris, Claudio AU - Fabris C FAU - Bertino, Enrico AU - Bertino E FAU - Coscia, Alessandra AU - Coscia A FAU - Conti, Amedeo AU - Conti A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Mol Nutr Food Res JT - Molecular nutrition & food research JID - 101231818 RN - 0 (Allergens) RN - 0 (Caseins) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin Heavy Chains) RN - 0 (Lactoglobulins) RN - 0 (Milk Proteins) RN - 27432CM55Q (Serum Albumin, Bovine) RN - 37341-29-0 (Immunoglobulin E) RN - 9013-90-5 (Lactalbumin) RN - EC 3.4.21.- (Lactoferrin) SB - IM MH - Allergens/*analysis/immunology MH - Animals MH - Caseins/immunology MH - Cattle MH - Electrophoresis, Gel, Two-Dimensional MH - Electrophoresis, Polyacrylamide Gel MH - Female MH - Humans MH - Immunoblotting MH - Immunoglobulin E/immunology MH - Immunoglobulin G/immunology MH - Immunoglobulin Heavy Chains/immunology MH - Infant MH - Lactalbumin/immunology MH - Lactoferrin/immunology MH - Lactoglobulins/immunology MH - Male MH - Milk/*immunology MH - Milk Hypersensitivity/diagnosis/*immunology MH - Milk Proteins/*immunology MH - Serum Albumin, Bovine/immunology MH - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization EDAT- 2005/01/27 09:00 MHDA- 2005/03/04 09:00 CRDT- 2005/01/27 09:00 PHST- 2005/01/27 09:00 [pubmed] PHST- 2005/03/04 09:00 [medline] PHST- 2005/01/27 09:00 [entrez] AID - 10.1002/mnfr.200400011 [doi] PST - ppublish SO - Mol Nutr Food Res. 2004 Oct;48(5):363-9. doi: 10.1002/mnfr.200400011.