白细胞介素-5与嗜酸性粒细胞阳离子蛋白在鼻息肉发病中的意义及相互关系

目的：探讨白细胞介素—5(IL—5)及嗜酸性粒细胞阳离子蛋白(ECP)在鼻息肉发病中的作用及相互关系。方法：采用pharmacia CAP荧光免疫系统和ELISA双抗体夹心法对30例鼻息肉患者(鼻息肉组)和8例鼻中隔偏曲或阻塞性睡眠呼吸暂停综合征(OSAS)患者(对照组)分别进行血清中ECP及组织匀浆中ECP、IL—5的检测。结果：鼻息肉组匀浆中IL—5的水平明显高于对照组，其差异有显著性意义(P＜0．05)；鼻息肉组血清与匀浆中的ECP含量明显高于对照组，其差异亦有显著性意义(P＜0．05)。鼻息肉组匀浆中IL—5与血清中ECP水平呈明显正相关(r＝0．598，P＜0．05)；与匀浆中的ECP水平也呈正相关(r＝0．451，P＜0．05)。结论：ECP是嗜酸性粒细胞活化的标志，也是导致鼻腔炎症发生的重要因子；IL—5在鼻息肉组织中高表达，并与血清和组织中ECP水平密切相关，共同促进鼻腔炎症过程的不断加重。

Study on the role of interleukin-5 and eosinophil cationic protein and the correlation between them in nasal polyp

Objective:To evaluate the degree of recruitment and activation of eosinophils; to confirm the concentration and expression of IL-5 in nasal polyps; to study the correlation between eosinophilic activation and cytokine such as IL-5.Method: Blood and nasal specimens were collected from 30 patients with nasal polyps and 8 controls with deviation of nasal septum or OSAS. The serum ECP levels in two groups and the IL-5 and ECP in nasal polyp specimens or inferior turbinate mucosa were examined.Result:Concentration of IL-5 and ECP in nasal polyps tissue homogenates were significantly higher than those in inferior turbinate mucosas (P< 0.05). The same result was showed in serum ECP. The elevated IL-5 levels in polyp homogenates had a significant correlation with serum ECP(r= 0.598,P< 0.05) and polyp tissues ECP(r= 0.451,P< 0.05).Conclusion:The concentration of IL-5 increased in the nasal polyp tissues and the degree of expression showed a significant correlation with activated eosinophils.