title: Basal release of urokinase plasminogen activator, plasminogen activator inhibitor-1, and soluble plasminogen activator receptor from separated and cultured endometriotic and endometrial stromal and epithelial cells.
abstract: OBJECTIVE
  To investigate whether separated and cultured endometriotic and endometrial stromal and epithelial cells release urokinase plasminogen activator (uPA), plasminogen activator inhibitor-1 (PAI-1), and soluble plasminogen activator receptor (suPAR) antigens in vitro.
  
  
  METHODS
  In vitro study.
  
  
  METHODS
  University hospital clinic.
  
  
  METHODS
  Regularly menstruating women with and without endometriosis.
  
  
  METHODS
  Tissue samples were collected at surgery performed for clinical reasons.
  
  
  METHODS
  The antigen concentrations of uPA, PAI-1, and suPAR in culture medium were assayed by enzyme-linked immunosorbent assay.
  
  
  RESULTS
  Both stromal and epithelial cells from endometriotic and endometrial tissue released the three types of antigens, but the release of PAI-1 was significantly higher from stromal cells in the three types of tissue than from epithelial cells. Furthermore, the release of PAI-1 was significantly higher from endometriotic cells than from endometrial stromal cells.
  
  
  CONCLUSIONS
  This study has demonstrated the basic capacity of separated epithelial and stromal cells from all three types of tissue to release uPA, PAI-1, and suPAR without any paracrine influence, as in vivo. The higher release of PAI-1 from endometriotic stromal cells might have importance for the invasive growth.
authors.affiliation: Department of Clinical Science, Unit of Obstetrics and Gynecology, Karolinska University Hospital Huddinge, SE-141 86 Huddinge, Sweden. christine.bruse@hs.se
authors.forename: Christine
authors.initials: C
authors.lastname: Bruse
authors.forename: Yongmei
authors.initials: Y
authors.lastname: Guan
authors.forename: Magdalena
authors.initials: M
authors.lastname: Carlberg
authors.forename: Kjell
authors.initials: K
authors.lastname: Carlström
authors.forename: Agneta
authors.initials: A
authors.lastname: Bergqvist
mesh_terms: D000328:Adult; D002478:Cells, Cultured; D004715:Endometriosis / Q000378:metabolism*; D004717:Endometrium / Q000166:cytology / Q000378:metabolism*; D004847:Epithelial Cells / Q000166:cytology / Q000378:metabolism; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D008875:Middle Aged; D017395:Plasminogen Activator Inhibitor 1 / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000378:metabolism*; D055293:Receptors, Urokinase Plasminogen Activator; D012995:Solubility; D017154:Stromal Cells / Q000166:cytology / Q000378:metabolism; D014568:Urokinase-Type Plasminogen Activator / Q000378:metabolism*
chemical_list: C524898:PLAUR protein, human; D017395:Plasminogen Activator Inhibitor 1; D011956:Receptors, Cell Surface; D055293:Receptors, Urokinase Plasminogen Activator; D014568:Urokinase-Type Plasminogen Activator