title: [Expression of leptin and long form of leptin receptors messenger ribonucleic acid and protein in endometrium of patients with polycystic ovary syndrome].
abstract: OBJECTIVE
  To study the expression of leptin and long form of leptin receptors (Ob-R(L)) messenger ribonucleic acid (mRNA) and protein in endometrium during mid-luteal phase of patients with polycystic ovary syndrome (PCOS).
  
  
  METHODS
  The expression of leptin and Ob-R(L) mRNA in endometrium during mid-luteal phase from 15 normal controls and 14 PCOS related anovulatory patients who underwent ovulation induction therapy were studied by in situ hybridization, and levels of leptin and Ob-R(L) protein were investigated by immunohistochemical methods.
  
  
  RESULTS
  The expression of Ob-R(L) mRNA and protein in endometrial glands of most patients with PCOS were weak or moderate positive, whereas the levels of Ob-R(L) mRNA and protein were moderate or strong positive in those of the controls, there was significant difference between the two groups; leptin mRNA and protein expression in endometrium of patients with PCOS and controls were not significantly different between the groups.
  
  
  CONCLUSIONS
  The expression of Ob-R(L) decreased in endometrium of mid-luteal phase in patients with PCOS during induced ovulation, which may be related to low pregnancy rate of patients with PCOS.
authors.affiliation: The Center of Assisted Reproduction, The Peking University Third Hospital, Beijing 100083, China.
authors.forename: Yu-zhen
authors.initials: YZ
authors.lastname: Wang
authors.forename: Jie
authors.initials: J
authors.lastname: Qiao
authors.forename: Li-li
authors.initials: LL
authors.lastname: Liu
authors.forename: Yong-jian
authors.initials: YJ
authors.lastname: Chen
authors.forename: Mei-zhi
authors.initials: MZ
authors.lastname: Li
mesh_terms: D000328:Adult; D004717:Endometrium / Q000737:chemistry* / Q000473:pathology; D005260:Female; D006801:Humans; D020738:Leptin / Q000032:analysis* / Q000235:genetics; D011085:Polycystic Ovary Syndrome / Q000378:metabolism* / Q000473:pathology; D012333:RNA, Messenger / Q000032:analysis*; D011956:Receptors, Cell Surface / Q000032:analysis* / Q000235:genetics; D054411:Receptors, Leptin
chemical_list: C515448:LEPR protein, human; D020738:Leptin; D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D054411:Receptors, Leptin