title: [Testosterone level not significantly correlates to endothelial progenitor cells in Klinefelter's syndrome patients].
abstract: OBJECTIVE
  To explore the correlation of the testosterone level with circulated endothelial progenitor cells in patients with Klinefelter's syndrome (KS) and its clinical significance.
  
  
  METHODS
  This study included 36 patients affected by non-mosaic 47, XXY KS, each with one or more cardiovascular risk factors. Serum hormone levels and the content of circulated endothelial progenitor cells were determined by radioimmunology and cell culture methods, respectively, and the measurement was repeated after 6 months of testosterone replacement therapy.
  
  
  RESULTS
  After testosterone replacement therapy, the testosterone level was increased from (8 +/- 3) to (24 +/- 10) nmol/L, while the content of endothelial progenitor cells ([41 +/- 48] cells/ml) showed no significant rise.
  
  
  CONCLUSIONS
  There is no obvious correlation between the testosterone level and the content of endothelial progenitor cells in KS patients.
authors.affiliation: Department of Urology, The Third Affiliated Hospital of Guangzhou Medical College, Guangzhou, Guangdong 510150, China.
authors.forename: Bo-zhan
authors.initials: BZ
authors.lastname: Ru
authors.forename: Xing-cheng
authors.initials: XC
authors.lastname: Gao
authors.forename: Wei-wei
authors.initials: WW
authors.lastname: Yue
authors.forename: Peng
authors.initials: P
authors.lastname: Hu
mesh_terms: D000328:Adult; D002452:Cell Count; D042783:Endothelial Cells / Q000166:cytology*; D020249:Hormone Replacement Therapy; D006801:Humans; D007248:Infertility, Male / Q000097:blood; D007713:Klinefelter Syndrome / Q000097:blood* / Q000188:drug therapy; D008297:Male; D013234:Stem Cells / Q000166:cytology*; D013739:Testosterone / Q000097:blood* / Q000627:therapeutic use
chemical_list: D013739:Testosterone