金华哮喘患儿的尘螨过敏测定

2005年10月～2006年9月，采用皮肤点刺试验测定并比较金华地区哮喘患儿对户尘螨、粉尘螨及热带剥爪螨（热尘螨）等3种尘螨变应原的反应性。结果显示哮喘患儿对户尘螨、粉尘螨变应原的阳性率分别为80.6%、77.8%，其中强阳性分别占65.5%和64.3%；热尘螨的阳性率为61.1%，低于户尘螨和粉尘螨（χ²=21.39， P<0.05），且几乎无强阳性者。热尘螨阳性者对户尘螨、粉尘螨变应原的阳性率分别高达100%（44/44）和95.9%（42/44）；热尘螨阴性者对户尘螨、粉尘螨变应原的阳性率均为28.6%（8/28）。结果表明户尘螨、粉尘螨是金华地区儿童哮喘的重要变应原，该组患儿对热尘螨的阳性率61.1%不能排除户尘螨、粉尘螨变应原交叉反应的干扰。

Prevalence of Mite Hypersensitivity in Children with Asthma

By skin prick test, three kinds of mite allergens (Dermatophagoides pteronyssinus, Dermatophagoides firinae, Blomia tropicalis) were tested in a group of asthma children in Jinhua area from Oct 2005 to Sep 2006. The positive rate to allergen from D. pteronyssinus and D. farinae was 80.6% and 77.8% respectively, higher than that of Blomia tropicalis (61.1%) (chi2 = 21.39, P < 0.05). Cases positive to Blomia tropicalis allergen showed 100% and 95.9% positive reaction to D. pteronyssinus and D. farinae repectively. The results demonstrated that the important allergens for children's asthma are from D. pteronyssinus and D. farinae, while the with the former two mite allergens. Blomia tropicalis allergen is supposed to have cross-reactivity