Effect of immunotherapy on serum levels of eosinophil cationic protein in perennial allergic rhinitis

被引:0
作者
Ohashi, Y
Nakai, Y
Kakinoki, Y
Ohno, Y
Sakamoto, H
Kato, A
Tanaka, A
机构
关键词
eosinophil cationic protein; immunotherapy; perennial allergic rhinitis;
D O I
暂无
中图分类号
R76 [耳鼻咽喉科学];
学科分类号
100213 ;
摘要
Eosinophil cationic protein (ECP) levels in the serum of clotted blood could reflect the rate of activation of circulating eosinophils. We investigated the serum ECP levels in patients with perennial allergic rhinitis, with special reference to the effect of immunotherapy on the serum ECP levels. Serum ECP levels in untreated patients with perennial allergic rhinitis are significantly higher than those of nonatopic volunteers. Therefore, this elevation in the untreated patients represents an ongoing inflammation occurring in allergic rhinitis. The mean serum ECP level of a 1-year immunotherapy group was significantly higher than that of the nonatopic group, and was not different from that of the untreated group. In contrast, the mean serum ECP level in patients who had more than 2 years of immunotherapy was significantly lower than that of the untreated group, and was not different from that of the nonatopic group. Additionally, serum ECP levels were significantly correlated with the duration of immunotherapy. These findings suggest that activation of circulating eosinophils decreases gradually during immunotherapy, but this inhibition becomes apparent only after 2 years of immunotherapy. The control of circulating eosinophil activation might be one of the important working mechanisms behind the clinical effect of immunotherapy.
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页码:848 / 853
页数:6
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