title: [Mutation and expression of p16 in human ovarian neoplasms].
abstract: OBJECTIVE
  To detect mutation and expression of p16 in human ovarian neoplasms and to understand the relations between p16 and development of ovarian neoplasms.
  
  
  METHODS
  Polymerase chain reaction-single strand polymorphism analysis and immunohistochemistry were respectively used to detect mutations in exon 1 and 2 and protein expression in 14 patients with ovarian neoplasms. Metastasis tissue of 5 mentioned patients were screened at the same time.
  
  
  RESULTS
  No expression of p16 was found in 7 ovarian neoplasm tissues. No mutation in exon 1 of p16 was found in any patient tissues, but mutations in exon 2 were found in 4 patients tissues and expression of p16 was not found in 2 of them. There was correspondence between primary focus and metastasis in either gene mutation or protein expression.
  
  
  CONCLUSIONS
  Inactivation of p16 may be involved in the development of ovarian neoplasms. Gene mutation is a kind of inactivation. Alterations of p16 probably occur before metastasis.
authors.affiliation: Xiangya Hospital, Hunan Medical University, Changsha 410008.
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Chao
authors.forename: Z
authors.initials: Z
authors.lastname: Yang
mesh_terms: D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000096:biosynthesis* / Q000235:genetics; D018240:Endodermal Sinus Tumor / Q000235:genetics* / Q000473:pathology; D005260:Female; D006801:Humans; D009154:Mutation; D010051:Ovarian Neoplasms / Q000235:genetics* / Q000473:pathology; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics
chemical_list: D019941:Cyclin-Dependent Kinase Inhibitor p16; D012333:RNA, Messenger