title: [Expression of MMP-9 and TIMP-1 in nasopharyngeal carcinoma and its signification at Xi'an and Shenzhen].
abstract: OBJECTIVE
  To compare the expression of matrix metalloproteinase-9 and tissue inhibitor of matrix metalloproteinase-1 of nasopharyngeal carcinoma at Xi'an and Shenzhen area.
  
  
  METHODS
  The protein expression of MMP 9 and TIMP 1 were studied by immunohistochemistry staining in 21 cases nasopharyngeal carcinoma of Xi'an and 22 cases of Shenzhen.
  
  
  RESULTS
  The expression positive rates of MMP-9 in nasopharyngeal carcinoma tissues at Xi'an and Shenzhen were 61.90% and 68.18%. The positive rates of TIMP-1 in nasopharyngeal carcinoma tissues at two regions were 28.57% and 31.82%. The expression between MMP-9 and TIMP-1 were negative relationship either Xi'an or Shenzhen. The expression of MMP-9 was positively correlated to lymph node metastasis, and TIMP-1 was no relationship with lymph node metastasis. The expression of MMP-9 and TIMP-1 was no difference between Xi'an and Shenzhen.
  
  
  CONCLUSIONS
  The expression of MMP-9 and TIMP-1 in nasopharyngeal carcinoma 2 tissues was no difference between Xi'an and Shenzhen. Increase of MMP-9 play an important role in progression and metastasis of nasopharyngeal carcinoma.
authors.affiliation: Department of Pathology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. whycc0320@yahoo.com.cn
authors.forename: Hongyan
authors.initials: H
authors.lastname: Wang
authors.forename: Yaman
authors.initials: Y
authors.lastname: Jing
authors.forename: Jianjie
authors.initials: J
authors.lastname: Zheng
authors.forename: Min
authors.initials: M
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002277:Carcinoma; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D002648:Child; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism*; D008875:Middle Aged; D000077274:Nasopharyngeal Carcinoma; D009303:Nasopharyngeal Neoplasms / Q000378:metabolism / Q000473:pathology; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism*; D055815:Young Adult
chemical_list: D019715:Tissue Inhibitor of Metalloproteinase-1; D020780:Matrix Metalloproteinase 9