ABSTRACT
OBJECTIVE@#To study the expression of intedeukin-5 (IL-5) mRNA and protein in Nasal polyps and in the inferior turbinate, and to explore the relationship between the expression and the Clinical features.@*METHOD@#Real time fluorescent quantitative PCR(RT-qPCR) and immunohistochemical staining were used to detect the expression of intedeukin-5 (IL-5) mRNA and protein in nasal polyps of 24 cases and in inferior turbinate of 15 cases.@*RESULT@#The expression of IL-5 mRNA in Nasal polyps was 7.52 times higher than that in the inferior turbinate (P 0.01), but was associated with the single or multiple nasal polyps, nasal polyps with or without allergic rhinitis and/or asthma. The differece of expression of IL-5 protein was not associated with the sexual distinction, unilateral or bilateral nasal polyps, primary or recurrent nasal polyps, nasal polyps with or without allergic rhinitis and/or asthma, but was associated with the single and multiple nasal polyps.@*CONCLUSION@#The high expression of IL-5 mRNA and protein is closely related with the formation edema and development of nasal polyps. Some clinical features of Nasal polyps related to the expression level of IL-5 in nasal polyps.