title: Increased expression of dectin-1 in nasal polyps.
abstract: OBJECTIVE
  A fungal etiology has been proposed to underlie severe nasal polyps (NP). Dectin-1 is an innate immune pattern recognition receptor which is involved in the recognition of some pathogenic fungi. We investigated the Dectin-1 levels in NP in order to evaluate the implication of such expression with respect to the development of NP.
  
  
  METHODS
  Normal inferior turbinate tissues were obtained from forty patients undergoing surgery for augmentation rhinoplasty. Nasal polyp tissues were obtained from 53 patients who underwent endoscopic sinus surgery for chronic polypoid rhinosinusitis. Real-time polymerase chain reaction and Western blot analysis were performed to evaluate the mRNA and protein level of Dectin-1, respectively. ELISA was carried out to evaluate the cytokine production (IL-4, IL-5, IL-10, and TNF-α) in NP.
  
  
  RESULTS
  Real-time polymerase chain reaction and Western-blot analysis showed that Dectin-1 expression in NP was increased compared with that in normal nasal inferior turbinate tissues. ELISA results suggest that the local expression of type-1 and type-2 inflammatory cytokine is skewed toward type-2 inflammatory cytokine in NP.
  
  
  CONCLUSIONS
  These results suggest that Dectin-1 may play a role in the development of NP, and the production of Dectin-1, IL-4 and IL-5 (type-2 cytokines), may mainly participate in the inflammatory reaction in NP.
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-Sen University, Guangzhou, P.R. China.
authors: Jian
authors: J
authors: Gong
authors: Pei
authors: P
authors: Wang
authors: Ze-heng
authors: ZH
authors: Qiu
authors: Qiu-jian
authors: QJ
authors: Chen
mesh_terms: D000328:Adult; D015153:Blotting, Western; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D015847:Interleukin-4 / Q000378:metabolism; D015848:Interleukin-5 / Q000378:metabolism; D037181:Lectins, C-Type / Q000378:metabolism*; D008297:Male; D009298:Nasal Polyps / Q000378:metabolism*; D060888:Real-Time Polymerase Chain Reaction; D014420:Turbinates / Q000378:metabolism; D000099181:Dectin-1
chemical_list: D015847:Interleukin-4; D015848:Interleukin-5; D037181:Lectins, C-Type; D000099181:Dectin-1