喘息住院婴儿嗜酸性粒细胞活性和儿童持续性哮喘风险
2009/12/15
嗜酸粒细胞性炎症在哮喘的发病过程中起到重要作用。本试验旨在研究喘息住院婴儿患者的血液嗜酸性粒细胞计数(B-EOS)和血清嗜酸性粒细胞阳离子蛋白(S-ECP)或鼻咽抽取液嗜酸性粒细胞阳离子蛋白(NPA-ECP)是否能预测之后的哮喘。
研究于1992-1993年纳入100例年龄小于24个月,因呼吸道感染相关喘息入院治疗的婴儿。入院时对B-EOS、S-ECP和NPA-ECP进行检测。在平均年龄为4岁、7.2岁及12.3岁时对患者进行随访,并对其哮喘状态进行评价。
81名儿童中的20名(25%)在3次随访中均存在哮喘,被认为存在持续性儿童哮喘(PCA)。B-EOS ≥ 0.450 x 109 cells/l的儿童其患PCA的风险是其他儿童的2.9倍。当S-ECP≥20.0 mug/l时,该风险为6.1倍,当NPA-ECP≥815.0 ng/g,该风险为6.7倍。基于上述截值,所有指标在预测PCA中均具有较高特异性(75-93%),但敏感性较低(30-58%)。至少有一项指标在75%的PCA患儿中升高,其中单纯NPA-ECP的价值为58%。在校正分析中,仅NPA-ECP增加是PCA的独立风险因子(OR =4.09)。
因此,喘息住院婴儿嗜酸性粒细胞活性能够预测其后儿童哮喘的发展。本研究显示,NPA-ECP是学龄期儿童持续性哮喘的独立预测因子。
(苏楠 审校)
Pediatr Allergy Immunol. 2009 Sep 30.
Eosinophil activity in infants hospitalized for wheezing and risk of persistent childhood asthma.
Hyvärinen MK, Kotaniemi-Syrjänen A, Reijonen TM, Piippo-Savolainen E, Korppi M.
Eosinophil activity in infants hospitalized for wheezing and risk of persistent childhood asthma. Pediatr Allergy Immunol 2009. (c) 2009 John Wiley & Sons A/SEosinophilic inflammation has a central role in the pathogenesis of asthma. We aimed to elucidate whether elevated blood eosinophil count (B-EOS), eosinophil cationic protein in serum (S-ECP) or in nasopharyngeal aspirate (NPA-ECP) predict later asthma after hospitalization for wheezing in infancy. In 1992-1993, 100 infants aged <24 months were hospitalized for wheezing associated with respiratory infection. B-EOS, S-ECP and NPA-ECP were measured on admission. Asthma status was evaluated at the follow-up visits at the median ages of 4.0, 7.2 and 12.3 yr. Twenty (25%) of 81 children had asthma at all three visits and were considered to have persistent childhood asthma (PCA). Children with B-EOS >/= 0.450 x 10(9) cells/l had a 2.9-fold PCA risk compared with other children. The risk was 6.1-fold when S-ECP was >/=20.0 mug/l and 6.7-fold when NPA-ECP was >/=815.0 ng/g. By these cut-off limits, all these markers were specific (75-93%), but not very sensitive (30-58%) in predicting PCA. At least one marker was elevated in 75% of the children with PCA. The respective figure for NPA-ECP alone was 58%. In adjusted analyses, only elevated NPA-ECP was an independent risk factor for PCA (OR 4.09). In conclusion, eosinophil activity in early life predicts the development of childhood asthma after hospitalization for wheezing in infancy. The results highlight NPA-ECP as an independent predictor of the persistence of asthma at school age.
Pediatr Allergy Immunol. 2009 Sep 30.
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PHF11基因与哮喘或哮喘表型之间不相关---一项在两组不同种群中的研究
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奥马珠单抗对过敏性哮喘患者炎症标记物的影响