银河糖-α-1,3-银河糖综合征
1From the Children's Mercy Hospital, Kansas City, Missouri.
Journal of food allergy
|July 18, 2024
概括
银河糖-α-1,3-银河糖 (α-Gal) 综合征导致在咬后对红肉的过敏反应延迟. 诊断涉及特定的IgE测试,治疗需要避免肉类和管理暴露.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏学 过敏学
- 流行病学 流行病学
背景情况:
- 银河糖-α-1,3-银河糖 (α-Gal) 综合征是一种新出现的食物过敏,与食用哺乳动物肉类后的延迟反应有关.
- 对发现在哺乳动物组织中的碳水化合物α-Gal的敏感性通常发生在多个关节动物咬伤后,特别是来自孤独星.
- 美国东南部的alpha-Gal综合征病例的地理分布与孤独星的流行率相关.
研究的目的:
- 描述银河糖-α-1,3-银河糖 (α-Gal) 综合征的特征,诊断和管理.
- 要突出咬,α-Gal敏感化和随后对哺乳动物肉的过敏反应之间的关联.
- 为这种独特的食物过敏提供诊断方法和治疗策略的指导.
主要方法:
- 基于患者病史的诊断评估,哺乳动物肉食后 (2-6小时) 的延迟反应.
- 对α-Gal特定IgE (sIgE) 水平的评估,考虑总IgE值和α-Gal sIgE的百分比.
- 皮肤测试可靠性的评估,注意到商业提取物的局限性和新鲜肉的刺刺测试的潜在实用性.
主要成果:
- 阿尔法-加尔综合征表现出影响皮肤,呼吸道,胃肠道或心血管系统的症状,从轻度到过敏反应.
- 诊断依赖于检测alpha-Gal sIgE,一些患者表现出较低的总IgE但高的alpha-Gal sIgE百分比.
- 使用商业肉提取物进行标准的皮穿检测是不可靠的;可以考虑使用新鲜肉进行刺刺检测.
结论:
- 阿尔法-加尔综合征的主要治疗方法是严格避免食用哺乳动物肉类和含有阿尔法-加尔表位体的产品.
- 长期避免哺乳动物肉和进一步的咬可能导致α-Gal sIgE水平降低,可能允许重新引入肉类.
- 一些患者可能需要避免额外的含肉产品,如果症状持续,尽管哺乳动物肉除外.
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