title: Presence of 17 beta-hydroxysteroid dehydrogenase type 3 messenger ribonucleic acid transcript in an ovarian Sertoli-Leydig cell tumor.
abstract: OBJECTIVE
  To evaluate the level of 17 beta-hydroxysteroid dehydrogenase (17 beta-HSD) type 1, 2, and 3 transcripts in a Sertoli-Leydig cell tumor, adjacent theca lutein ovarian tissue, and normal control ovarian stromal tissue.
  
  
  METHODS
  An academic medical center.
  
  
  METHODS
  Total RNA was extracted from formalin-fixed, paraffin-embedded tissue slides and used for reverse transcription-polymerase chain reaction (RT-PCR) with primers specific for 17 beta-HSD types 1, 2, or 3. The PCR products were subjected to Southern hybridization with 5' [32P] end-labeled internal primers for each type of the isozymes.
  
  
  METHODS
  A 35-year-old woman with a Sertoli-Leydig cell tumor on her right ovary. The tumor and the right ovary were surgically removed. Control ovarian stromal tissue was obtained from a woman undergoing hysterectomy for uterine leiomyomata.
  
  
  RESULTS
  In the control ovarian stromal tissue, the transcripts for the type 1 and type 2 isoforms were the predominant transcripts detected. In the Sertoli-Leydig cell tumor, the transcript for the type 3 isoform was the predominant transcript detected. Ovarian tissue from the same ovary as the Sertoli-Leydig cell tumor (diagnosed as theca lutein cysts on histologic examination) expressed the type 2 and 3 transcripts.
  
  
  CONCLUSIONS
  The 17 beta-HSD type 3 isoform efficiently converts androstenedione to T and is the predominant HSD isoform in the testis. In hyperandrogenism caused by a Sertoli-Leydig cell tumor, both the tumor tissue and nontumor tissue from the same ovary expressed the "testicular" form of the 17 beta-HSD.
authors.affiliation: Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: R L
authors.initials: RL
authors.lastname: Barbieri
authors.forename: X
authors.initials: X
authors.lastname: Gao
mesh_terms: D015067:17-Hydroxysteroid Dehydrogenases / Q000235:genetics*; D000328:Adult; D005260:Female; D006801:Humans; D007527:Isoenzymes / Q000235:genetics*; D010051:Ovarian Neoplasms / Q000201:enzymology*; D012333:RNA, Messenger / Q000032:analysis*; D018310:Sertoli-Leydig Cell Tumor / Q000201:enzymology*
chemical_list: D007527:Isoenzymes; D012333:RNA, Messenger; D015067:17-Hydroxysteroid Dehydrogenases