目的 分析过敏性疾病儿童过敏原的种类和特点。方法 采用国产欧博克试剂盒(酶联免疫法)对174例过敏性疾病患儿进行食物及吸入性过敏原特异性IgE(SIgE)检测,比较≤3岁和＞3岁两组患儿SIgE阳性率。结果 过敏性疾病患儿SIgE检测阳性率达72.99%(127/174),排名前2位的是:屋尘螨/粉尘螨(39.66%,69/174)、屋尘(26.44%,46/174)。≤3岁组食物性过敏原阳性率33.93%(19/56),吸入性过敏原阳性率44.64%(25/56),＞3岁组食物性过敏原阳性率41.53%(49/118),吸入性过敏原阳性率61.02%(72/118);127例阳性病例中, 96例对≥2种过敏原呈阳性反应, 69例SIgE等级≥3,＞3岁组混合过敏率及高度过敏率高于≤3岁组。结论 广州地区过敏性疾病儿童以吸入性过敏为主,主要过敏原是屋尘螨/粉尘螨、屋尘,随着年龄增长,吸入性过敏原阳性率升高,混合过敏的机率增加。建议对过敏疾病患儿进行过敏原检测,以制定相应环境干预措施及特异性脱敏治疗方案。

Objective To inverstigate the types and characteristics of allergen in children in different age with allergic diseases. Methods The food and inhalant allergen-specifi IgE(SIgE) were detected by the domestic specific IgE Screening ELISA kit in 174 children with allergic diseases,and were compared among children aged ≤3 and ＞3 years. Results 72.99%(127/174) of children with allergic diseases were positive for SIgE,the common allergen were dermatophagoides pteronyssinus/dermatophagoides farina and dust. In the group of ≤3 years old,the positives rate of food allergens was 33.93%(19/56),and the positives rate of aeroallergens was 44.65%(25/56).In the group of >3 years old, the positives rate of food allergens was 41.53%(49/118), the positives rate of aeroallergens was 61.02%(72/118).96 of 127(75.59%) positive cases yielded positive result to more than 2 allergens.69 patients's SIgE levels greater were ≥ 3,the mixed allergic rate and highly allergic rate of the children aged ＞3 years were higher than the children aged ≤3 years. Conclusion The children with allergic diseases in Guangzhou area were allergic mainly to inhalant allergens,especially to dermatophagoides pteronyssinus/dermatophagoides farina and dust.Aeroallergens are becoming the allergens as children grow with ages, and probability of mixture allergy is increasing.

目的 比较肺炎支原体肺炎(MPP)、非MPP患儿和健康儿童的免疫球蛋白、补体水平,以探讨儿童MPP体液免疫指标的变化规律。方法 分别检测52例MPP、55例非MPP患儿和33例健康儿童的血清免疫球蛋白(IgG、IgA、IgM)、补体(C3、C4),并比较儿童MPP急性期和恢复早期体液免疫指标。结果 MPP组急性期血清IgM、C3、C4水平高于非MPP组急性期和健康儿童(P<0.05)。儿童MPP恢复早期IgM水平高于急性期,C4水平低于急性期(P<0.05)。结论 与非MPP和健康儿童比较,MPP患儿存在明显体液免疫功能紊乱,从急性期到恢复早期,血清IgM逐渐升高,补体C4先升高后降低,自身免疫反应可能参与了儿童MPP的发病过程。

Objective To investigate the changes of serum immunoglobulins and complement in children with mycoplasma pneumoniae pneumonia (MPP). Methods 52 children with MPP, 55 children with non-MPP and 33 healthy children were enrolled. The levels of serum immunoglobulins (IgG, IgA and IgM) and complements (C3, C4) were detected. Results Compared with the non-MPP group and healthy control, the levels of IgM, C3 and C4 in MPP group during their acute phase were significantly higher (P<0.05). And among the MPP group the levels of IgM were hisher and C4 were lower than that in the acute phase. Conclusion Immune function disturbance exists in children with MPP. From acute to recovery stage, the level of IgM increased while C4 increased firstly and then decreased. Immune injury may be involved in the pathophysiology of childhood MPP.