title: [Study on the association between interleukin-5 and eosinophil in nasal polyp].
abstract: OBJECTIVE
  To explore the expression of IL-5 and its role in the formation and development of nasal polyp.
  
  
  METHODS
  31 patients with nasal polyp, 11 patients with chronic sinusitis(CS) and 6 control cases were chosen. Their IL-5 concentration in tissue homogenate were measured by ELISA. All patients with chronic sinusitis, control cases and 15 patients with nasal polyp were chosen to be counted eosinophils in their HE slice.
  
  
  RESULTS
  1. The values of IL-5(pg/ml) in nasal polyp, CS and control group separately were: 23.44 +/- 6.68, 16.41 +/- 3.09, 12.86 +/- 4.17. IL-5 concentration in nasal polyp group was higher than that in the other two groups(P < 0.001). 2. The numbers of eosinophils in nasal polyp, CS and control group were 7.42 +/- 2.33, 1.30 +/- 0.59, 1.07 +/- 0.70 separately, the numbers of eosinophils in nasal polyp group were higher than that in CR or control group (P < 0.05).
  
  
  CONCLUSIONS
  Nasal polyp is a disease characterized by eosinophilia, and IL-5 which activates eosinophil plays part role in the formation of nasal polyp.
authors.affiliation: Department of Otolaryngology, First Affiliated Hospital, Sun Yat-Sen University of Medical Science, Guangzhou 510089.
authors.forename: T Y
authors.initials: TY
authors.lastname: Li
authors.forename: L P
authors.initials: LP
authors.lastname: Xia
authors.forename: Z F
authors.initials: ZF
authors.lastname: Wang
authors.forename: M Y
authors.initials: MY
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D004804:Eosinophils / Q000502:physiology*; D005260:Female; D006801:Humans; D015848:Interleukin-5 / Q000096:biosynthesis*; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000378:metabolism* / Q000473:pathology; D012852:Sinusitis / Q000378:metabolism / Q000473:pathology
chemical_list: D015848:Interleukin-5