title: [Expressions of matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 in ectopic and eutopic endometrium].
abstract: OBJECTIVE
  To study the expression of matrix metalloproteinase-9(MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in ectopic and eutopic endometrium in patients with endometriosis.
  
  
  METHODS
  The expressions of MMP-9 and TIMP-1 in ectopic and eutopic endometrium were detected by immunohistochemistry streptavidin-biotin peroxidase (SP) method in 45 patients with endometriosis (study group) and in 32 patients with uterine fibroid (control group).
  
  
  RESULTS
  In the ectopic and eutopic endometrium of group and in the control group endometrium, the expression of MMP-9 was respectively 0.381, 0.336 and 0.276; the expression of TIMP-1 was respectively 0.239, 0.253, 0.267. As a result, the ratio of MMP-9/TIMP-1 in ectopic and eutopic endometrium of study group and in the control group endometrium was respectively 1.594, 1.293, 1.034. The difference of MMP-9, MMP-9/TIMP-1 in ectopic and eutopic and the control group endometrium was markedly significant (P < 0.01 or P < 0.05). The difference of the expression of TIMP-1 between ectopic and the control group endometrium was also markedly significant (P < 0.01). Higher expression of MMP-9 and lower expression of TIMP-1 in ectopic endometrium and higher expression of MMP-9 in eutopic endometrium occurred in the whole menses period, in which higher expression of MMP-9 in ectopic endometrium than in eutopic endometrium only took place in proliferative phase.
  
  
  CONCLUSIONS
  The change of expression of MMP-9 and TIMP-1 in ectopic endometrium may be related to the pathogenesis of endometriosis.
authors.affiliation: Department of Obstetrics and Gynecology, First Affiliated Hospital in Xiamen, Fujian Xiamen 361004, China.
authors.forename: Qiong-hua
authors.initials: QH
authors.lastname: Chen
authors.forename: Jun-ying
authors.initials: JY
authors.lastname: Qu
authors.forename: Ya-yun
authors.initials: YY
authors.lastname: Xu
authors.forename: Na-xuan
authors.initials: NX
authors.lastname: Qiu
authors.forename: Yan-zhen
authors.initials: YZ
authors.lastname: Zhuang
authors.forename: Shan
authors.initials: S
authors.lastname: Zhong
authors.forename: Qing-quan
authors.initials: QQ
authors.lastname: Fang
mesh_terms: D000328:Adult; D004715:Endometriosis / Q000201:enzymology* / Q000473:pathology; D004717:Endometrium / Q000201:enzymology* / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism*; D008597:Menstrual Cycle / Q000378:metabolism; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism*
chemical_list: D019715:Tissue Inhibitor of Metalloproteinase-1; D020780:Matrix Metalloproteinase 9