Clin Transl Allergy:哮喘与皮毛动物的过敏原分子和脂蛋白的多元致敏有关

2022-05-11 小文子 MedSci原创

使用分子过敏诊断进行详细评估可能有助于临床医生评估过敏致敏对哮喘发病率的影响。

对犬皮屑过敏是儿童哮喘的重要危险因素。对犬过敏原分子Can f 1、Can f 2、Can f 4和Can f 6(脂质运载蛋白家族)、Can f 3(犬血清白蛋白)和Can f 5(前列腺激肽释放酶)的IgE分析,有助于从分子过敏原水平阐明哮喘和变应性致敏之间的关系。Clinical and Translational Allergy 杂志的一项研究调查了IgE反应性对临床可用的6种犬过敏原分子在犬皮屑致敏儿童中的相对重要性。

研究人员对59名犬皮屑致敏儿童(10-18岁)进行肺活量测定、乙酰甲胆碱激发试验、FeNO、犬皮屑提取物鼻腔激发试验和问卷调查。对犬、猫、马皮屑提取物的IgE抗体和犬过敏原分子Can f 1–6、Fel d 1、Fel d 2、Fel d 4和Equ c 1的血清IgE进行评估。

59名犬皮屑致敏儿童中有50名患有哮喘。在50名哮喘儿童中,有30名因接触犬而引发哮喘,其中6名患有严重哮喘。

无哮喘儿童对毛皮动物变应原分子的IgE阳性结果中位数为3,哮喘儿童为5.5,难治性哮喘为9(哮喘vs无哮喘,p=0.039;难治性哮喘与无哮喘,p=0.009)。对脂蛋白致敏的哮喘优势比为7.2(95%CI:1.44-35.9)。

与其他人群相比(n=53),严重哮喘儿童(n=6)对犬皮屑(57 vs 11 kUA/L, p =0.017)和犬脂蛋白Can f 2(44 vs 4.1 kUA/L,p=0.015)、Can f 4(5.8 vs 0.9 kUA/L,p=0.018)和Can f 6(1.3 vs 0.7 kUA/L,p=0.03)的IgE水平较高。

严重哮喘儿童对Can f 3的致敏更常见(67% vs 23%,p=0.041),但与其他研究人群相比,他们对Can f 3的IgE水平没有差异。严重哮喘儿童的犬皮屑提取物鼻腔刺激阳性更常见(83% vs 36%,p=0.036)。

结果表明,对皮毛动物过敏原和犬脂蛋白Can f 2、Can f 4和Can f 6的高IgE水平的多元致敏与犬皮屑致敏儿童的哮喘严重程度相关。因此,使用分子过敏诊断进行详细评估可能有助于临床医生评估过敏致敏对哮喘发病率的影响,从而改善关于犬暴露、未来治疗和免疫治疗的建议。

原文出处:

Ulrika Käck,corresponding author, Marianne van Hage, et al, Allergic sensitization to lipocalins reflects asthma morbidity in dog dander sensitized children, Clin Transl Allergy. 2022, doi: 10.1002/clt2.12149.

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    2022-08-14 bsmagic9140
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    2022-05-11 膀胱癌
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