Characterization of messenger RNA expression of estrogen receptor-α and -β in patients with ovarian endometriosis

Sachiko Matsuzaki, Takao Fukaya, Shigeki Uehara, Takashi Murakami, Hironobu Sasano, Akira Yajima

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


Objective: To evaluate the expression of estrogen receptor (ER)-α and ER-β messenger RNA (mRNA) in ovarian endometriosis. Design: Prospective study. Setting: University hospital. Patient(s): Patients with endometriosis and patients with uterine leiomyoma or carcinoma in situ. Intervention(s): A sample of ovarian endometriotic cyst tissue was obtained from each of the 32 patients during laparoscopic cystectomy. Samples of ovarian tissue and endometrium were obtained from 15 patients during or just after surgery. Main Outcome Measure(s): Expression of mRNA for ER-α and ER-β with use of the reverse transcription-polymerase chain reaction (RT-PCR) and nonradioactive in situ hybridization (ISH) techniques. Result(s): Expression of mRNA for ER- α and ER-β was observed in all of the control tissues from the normal endometrium and normal ovaries in the RT-PCR and ISH analyses, although the distribution of positive signals changed in the ISH analysis during different phases of the menstrual cycle. Messenger RNA for ER-α was detected in all of the ovarian endometriotic cysts analyzed (19 of 19), but mRNA for the ER-β was limited (12 of 19) in the RT-PCR analysis. The ISH analysis confirmed the RT-PCR results and revealed that the two estrogen receptors were localized in both epithelial and stromal cells of endometriotic tissues. Conclusion(s): The results suggest that predominant expression of ER-α in both glandular epithelial and stromal cells may be essential to the development and growth of ovarian endometriosis. (C) 2000 by American Society for Reproductive Medicine.

Original languageEnglish
Pages (from-to)1219-1225
Number of pages7
JournalFertility and sterility
Issue number6
Publication statusPublished - 2000 Jun
Externally publishedYes


  • Estrogen receptor-α
  • Estrogen receptor-β
  • In situ hybridization
  • Ovarian endometriosis
  • Reverse transcription-polymerase chain reaction

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology


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