The molecular characterization of bioactive food components is necessary for understanding the mechanisms of their beneficial or detrimental effects on human health. This study focused on γ-conglutin, a well-known lupin seed N-glycoprotein with health-promoting properties and controversial allergenic potential. Given the importance of N-glycosylation for the functional and structural characteri...

IgG antibodies produced by rabbits immunized against S. mansoni antigens cross-reacted with aqueous soluble constituents of a variety of allergens. The antibody cross-reactivity was largely sensitive to degradation by treatment of the target antigens with sodium meta-periodate, suggesting the cross-reactivity was due to carbohydrate determinants that were common to both the schistosome and the ...

Recent studies have demonstrated the existence of single O-linked N-acetylglucosamine (O-GlcNAc) residues on cytoplasmic and nuclear glycoproteins. Labeled lectin and enzymatic techniques have been used to identify O-GlcNAc-bearing proteins, but no antibodies generally reactive with such O-linked GlcNAc moieties have been described. We have previously characterized monoclonal antibodies (mAbs) ...

Current interest in determining the possible protective role of antibodies against group B streptococcal disease prompted this study of the feasibility of using a radioimmunoassay to measure type-specific immunity in humans. The radioimmunoassay was standardized as a quantitative test for antibodies against the carbohydrate (CHO) antigens of all five group B types. The data showed that the CHO ...

Results Of 943 ISAC tests, 852 showed sensitization to at least one component and were included for further analysis. Mean age was 33,4 years. The majority of patients in our population was poly-sensitized, with 66% recognizing more than ten components. The most recognized component was Bet v 1 (70%). The top 10 food allergens were: apple (Mal d 1; 65%), peach (Pru p 1; 63%), hazelnut (Cor a 1....

Insect stings can cause life-threatening IgE-mediated anaphylactic reactions in venom-allergic patients. Although several compounds have already been described as venom allergens, prominent allergen candidates especially in the higher m.w. range have still remained elusive. Tandem mass spectrometry-based sequencing assigned a candidate gene to the most prominent putative high m.w. allergen Api ...

Epstein-Barr virus (EBV)-transformed human B lymphocytes were fused with a murine-human heteromyeloma to produce stable hybrid cell lines that secreted human monoclonal antibodies (mAbs) of the IgM class that recognized conserved epitopes in the core-lipid A region of lipopolysaccharides (LPS). Three of the mAbs reacted with epitopes on the lipid A moiety, while a fourth recognized a determinan...

BACKGROUND Peanut may cause severe reactions in allergic individuals. The objective was to evaluate IgE antibodies to various recombinant (r) peanut and birch pollen allergens in relation to IgE levels to whole peanut extract and severe allergic reactions to peanut. METHODS Seventy-four Swedish peanut-allergic patients (age: 14-61 years) reported previous peanut exposure and associated sympto...

BACKGROUND Diets high in carbohydrates may result in chronically elevated insulin concentrations and may affect breast cancer risk by stimulation of insulin receptors or through insulin-like growth factor I (IGF-I)-mediated mitogenesis. Insulin response to carbohydrate intake is increased in insulin-resistant states such as obesity. OBJECTIVE We sought to evaluate carbohydrate intake, glycemi...

Allergic reactions to peanut (Arachis hypogaea, Ara h) are caused by immunoglobulin E (IgE)-mediated sensitizations to various proteins. The stability and relative proportion of these proteins in peanut determine the risk of hazardous reactions. Hazardous sensitization to seed storage proteins [S2 albumins (Ara h 2, 6 and 7) > other seed storage proteins (Ara 1 and 3) > oleosins (Ara h 10 and 1...