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Red meat allergic patients have a selective IgE response to the alpha-Gal glycan

机译:红肉过敏患者对α-Gal聚糖具有选择性IgE反应

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摘要

Galactose--1,3-galactose (-Gal) is a mammalian carbohydrate with significance in a novel type of food allergy. Patients with IgE against -Gal report severe allergic symptoms 3-6h after consumption of red meat. We investigated whether IgE from red meat allergic patients recognizes other mammalian glycans than -Gal or glycans from the plant kingdom and insects of importance in allergy. We found that none of the 24 red meat allergic patients investigated had an IgE antibody response against the other abundant mammalian glycan N-glycolylneuraminic acid or against cross-reactive carbohydrate determinants from plant or venom sources (nCup a 1, nArt v 1, and MUXF3). Deglycosylation of an -Gal-containing protein, bovine thyroglobulin, significantly reduced the IgE response. In conclusion, we show that red meat allergic patients have a selective IgE response to the -Gal glycan found in red meat. Other common glycans reactive in allergic disease are not targets of red meat allergic patients' IgE.
机译:半乳糖-1,3-半乳糖(-Gal)是一种哺乳动物碳水化合物,在新型食物过敏中具有重要意义。食用IgE抗-Gal的患者在食用红肉后3-6小时报告了严重的过敏症状。我们调查了来自红肉过敏患者的IgE是否能识别除-Gal以外的其他哺乳动物聚糖或植物界和对过敏重要的昆虫的聚糖。我们发现,调查的24名红肉过敏患者中,没有一个针对其他丰富的哺乳动物聚糖N-羟甲基神经氨酸或来自植物或毒液的交叉反应性碳水化合物决定因素的IgE抗体反应(nCup 1,nArt v 1和MUXF3 )。含-Gal的蛋白质牛甲状腺球蛋白的去糖基化作用显着降低了IgE反应。总之,我们表明,对红肉过敏的患者对在红肉中发现的-Gal聚糖具有选择性的IgE反应。在过敏性疾病中具有反应性的其他常见聚糖不是红肉过敏患者的IgE的靶标。

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