Rak S, Håkansson L, Venge P
Int Arch Allergy Appl Immunol. 1987;82(3-4):349-50. doi: 10.1159/000234224.
Recently, heat-labile eosinophil chemotactic activity (ECA) has been found in serum after challenge of allergic asthmatic patients. In this study, we investigated changes in ECA in 40 birch-allergic patients during the birch pollen season; 20 of them had been treated with immunotherapy of birch pollen extract before the season. ECA raised significantly (p less than 0.001) in the untreated birch pollen-allergic patients during the season. Immunotherapy completely abolished this activity.
最近，在对过敏性哮喘患者进行激发试验后，发现其血清中存在热不稳定嗜酸性粒细胞趋化活性（ECA）。在本研究中，我们调查了40名桦树过敏患者在桦树花粉季节期间ECA的变化；其中20名患者在该季节之前接受了桦树花粉提取物免疫治疗。在该季节期间，未经治疗的桦树花粉过敏患者的ECA显著升高（p<0.001）。免疫治疗完全消除了这种活性。
