几滴血检测食物过敏的严重程度

2015-04-07 佚名 生物通

过敏是一件很痛苦的事情,不仅与美食无缘,有时还有生命危险。美国西奈山伊坎医学院的研究人员开发出一种新型的血液检测,有望预测哪些人会对食物产生严重的过敏反应。这项研究近日发表在Annals of Allergy, Asthma & Immunology杂志上。 在检测食物过敏时,医生通常抽取血液,测定免疫系统产生的过敏原特异性IgE(sIgE)的水平。然而,这些检测并不能预测过敏反应的严重

过敏是一件很痛苦的事情,不仅与美食无缘,有时还有生命危险。美国西奈山伊坎医学院的研究人员开发出一种新型的血液检测,有望预测哪些人会对食物产生严重的过敏反应。这项研究近日发表在Annals of Allergy, Asthma & Immunology杂志上。

在检测食物过敏时,医生通常抽取血液,测定免疫系统产生的过敏原特异性IgE(sIgE)的水平。然而,这些检测并不能预测过敏反应的严重程度。诊断食物过敏的金标准仍然是口服食物激发试验,即患者在医生的指导下,口服特定的过敏原,以检测过敏反应的症状。不过这种检测本身也可能引发严重的反应。

在这项新发表的研究中,西奈山伊坎医学院的研究人员报告了一种简单又安全的血液检测,它通过计数一种由食物激发的免疫细胞数量,而准确预测每个人的过敏程度。它测定的细胞是嗜碱性粒细胞(basophil),而这种血液检测(嗜碱性粒细胞活化检测,BAT),仅仅需要少量血液,就能提供快速的结果。

文章的第一作者Ying Song医学博士表示:“尽管食物激发试验被广泛采用,但它们有严重过敏反应的风险,而我们相信BAT检测能够以安全的方式提供准确的结果。”

“尽管嗜碱性粒细胞活化检测已经被证明是一种重要的工具,能区分过敏和不过敏的个体,并预测食物过敏反应的严重程度,但在目前,它仅适用于研究,”文章的通讯作者Xiu-Min Li医学博士谈到。他是伊坎医学院的儿科教授。

研究人员采集了67名患者的血液。他们的年龄在12-45岁,接受食物激发试验时分别吃了安慰剂或花生、坚果、鱼类、贝类或芝麻。研究的目标是看看BAT检测结果是否与食物激发试验的结果一致。这项研究是双盲的,因此研究人员和患者都不知道谁吃了安慰剂,谁吃了过敏原,这是随机分配的。

在随机的食物激发试验前,研究人员采集了所有患者的血液,并分析了结果。研究表明BAT检测数据和激发试验的严重度评分之间有很强的相关性。这一发现说明BAT检测能够减少激发试验的需要,这不仅适用于花生、坚果、鱼类、贝类和芝麻,可能也适用于其他食物。

原始出处

Song Y1, Wang J1, Leung N1, Wang LX2, Lisann L1, Sicherer SH1, Scurlock AM3, Pesek R3, Perry TT3, Jones SM3, Li XM4.Correlations between basophil activation, allergen-specific IgE with outcome and severity of oral food challenges.Ann Allergy Asthma Immunol. 2015 Apr;

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    2015-10-12 hlycom3356

    这篇文章写的很好

    0

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    2015-10-12 hlycom3356

    这篇文章写的很好

    0

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    2015-10-12 hlycom3356

    这篇文章写的很好

    0

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    2015-10-12 hlycom3356

    这篇文章写的很好

    0

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    2015-04-09 yhy100201
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    2015-04-09 Luyuxie_11
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    2015-04-08 shawuque

    感觉还是挺危险的!不知道那些受试者是怎么答应的?

    0

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