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用逐渐不太加热的卵子形式进行基细胞激活测试,区分蛋过敏和耐受蛋的儿童
L De Vlieger1, L Nuyttens1,2, T Ieven1,3
1Department of Microbiology, Immunology and Transplantation, Allergy and Immunology Research Group, KU Leuven, Leuven, Belgium.
Journal of investigational allergology & clinical immunology
|November 8, 2023
概括
使用不太加热的全蛋提取物进行基细胞激活测试 (BAT) 可以准确地诊断出蛋过敏. 这种方法具有很高的灵敏度和特异性,可以区分过敏和耐受性儿童,并有助于耐受性监测.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏 诊断 过敏 诊断
- 食物过敏研究 食物过敏研究
背景情况:
- 目前的蛋过敏诊断通常使用蛋白的提取物,而不是整个蛋.
- 为诊断目的,加热对全蛋过敏性的影响尚不清楚.
- 需要通过临床相关的全蛋制剂验证基细胞激活测试 (BAT).
研究的目的:
- 为了验证使用逐渐减少加热的全蛋提取物用于诊断蛋过敏的BAT.
- 评估BAT的实用性,作为发展耐受性的标记.
- 为了将BAT准确度与蛋特异性IgE (sIgE) 水平进行比较.
主要方法:
- 基于CD63的BAT在患有蛋过敏 (EA),耐受性 (ET) 和无敏感性 (NEA) 的儿童身上进行.
- 使用了五个完整的蛋提取物,从原始到完全煮熟 (蛋糕).
- 通过接受器操作特征曲线分析来确定诊断的准确性;在卵子重新引入期间跟踪基细胞反应的变化.
主要成果:
- 与耐受性儿童相比,对蛋过敏的儿童对所有蛋提取物的基因细胞反应增加.
- 随着蛋提取物加热的增加,基细胞的反应下降.
- 负的BAT结果预测了临床耐受性,具有90%-100%的灵敏度和100%的特异性,表现优于蛋sIgE.
结论:
- 使用逐渐不太加热的全蛋制剂的BAT是一种高度敏感和特定的诊断工具.
- 这种方法有效地区分了蛋过敏和耐受蛋的儿童.
- 在逐步重新引入蛋过程中监测耐受性发展的BAT显示出希望.
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