title: [Association of nm23-H1 with orthopedic oncological conditions].
abstract: OBJECTIVE
  To explore the correlation between nm23-H1 gene and malignant and semi-malignant bone tumors.
  
  
  METHODS
  Thirty surgical specimens were collected, including 8 osteosarcomas, 7 giant cell tumors, 4 chondrosarcomas, 2 Ewing's sarcomas, 2 malignant fibrohistocytomas, 1 neurofibrosarcoma, 1 schwannoma, and 5 metastatic cancers. The expression of nm23-H1 in these specimens was observed by in situ hybridization and immunohistochemical staining.
  
  
  RESULTS
  The expression of nm23-H1 in 4 cases of primary giant cell tumor (GCT) was high, but was low or absent in 3 recurrent ones. In 4 cases of chondrosarcomas, the expression was positive. Its expression was basically negative in Ewing's tumor, malignant fibrous histiocytoma and metastatic sarcomas.
  
  
  CONCLUSIONS
  There is no association of nm23-H1 with osteosarcoma.
authors.affiliation: Bone Tumor Laboratory, People's Hospital, Beijing Medical University, Beijing 100044.
authors.forename: L
authors.initials: L
authors.lastname: Ha
authors.forename: W
authors.initials: W
authors.lastname: Guo
authors.forename: C
authors.initials: C
authors.lastname: Feng
authors.forename: H
authors.initials: H
authors.lastname: Li
mesh_terms: D000328:Adult; D000951:Antigens, Neoplasm / Q000096:biosynthesis / Q000235:genetics; D001859:Bone Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry; D017403:In Situ Hybridization; D008297:Male; D020559:Monomeric GTP-Binding Proteins / Q000096:biosynthesis / Q000235:genetics*; D054778:NM23 Nucleoside Diphosphate Kinases; D009701:Nucleoside-Diphosphate Kinase; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D014157:Transcription Factors / Q000096:biosynthesis / Q000235:genetics*
chemical_list: D000951:Antigens, Neoplasm; D054778:NM23 Nucleoside Diphosphate Kinases; D012333:RNA, Messenger; D014157:Transcription Factors; C517938:NME1 protein, human; D009701:Nucleoside-Diphosphate Kinase; D020559:Monomeric GTP-Binding Proteins