title: [Significance of p53, c-myc and nm23 protein expression in recurrent laryngeal carcinoma].
abstract: OBJECTIVE
  To evaluate the prognosis of postoperative laryngeal cancer recurrence, the study was designed to investigate the relationship of p53, c-myc and nm23 protein expression in recurrent laryngeal carcinoma.
  
  
  METHODS
  Five hundred and seventy-four cases of laryngeal carcinoma were retrospectively reviewed. All the patients were observed for 3 years postoperatively, 56 cases with recurrence were diagnosed and 39 cases of normal laryngeal tissue were compared. The tissue microarrays was made in all the cases. The tissue chip was analyzed by the SABC immunohistochemical method.
  
  
  RESULTS
  p53, c-myc and nm23 expressed in most of the laryngeal carcinoma. The positive ratio is different. There is higher expression of c-myc in recurrent laryngeal carcinoma, and its expression has significant difference with the laryngeal carcinoma, which have no recurrence (P < 0.01). nm23 has lower expression in recurrent laryngeal carcinoma, and it's expression has significant difference with the laryngeal carcinoma which have no recurrence(P < 0.01). The expression of p53 has no significant difference between recurrent laryngeal carcinoma and the laryngeal carcinoma which have no recurrence(P > 0.05). There is the positive correlation between the expression of c-myc and the recurrent laryngeal carcinoma; and negative correlation between the expression of nm23 and the recurrent laryngeal carcinoma.
  
  
  CONCLUSIONS
  c-myc and nm23 could be the prognosis marker of postoperative laryngeal cancer recurrence.
authors.affiliation: Department of Otolaryngology, PLA General Hospital, Beijing 100853.
authors.forename: Rui
authors.initials: R
authors.lastname: Guo
authors.forename: Deliang
authors.initials: D
authors.lastname: Huang
authors.forename: Weiyan
authors.initials: W
authors.lastname: Yang
authors.forename: Dongyi
authors.initials: D
authors.lastname: Han
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007822:Laryngeal Neoplasms / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D020559:Monomeric GTP-Binding Proteins / Q000096:biosynthesis*; D054778:NM23 Nucleoside Diphosphate Kinases; D009364:Neoplasm Recurrence, Local / Q000378:metabolism*; D009701:Nucleoside-Diphosphate Kinase; D011379:Prognosis; D016271:Proto-Oncogene Proteins c-myc / Q000096:biosynthesis*; D012189:Retrospective Studies; D014157:Transcription Factors / Q000096:biosynthesis*; D016159:Tumor Suppressor Protein p53 / Q000096:biosynthesis
chemical_list: D054778:NM23 Nucleoside Diphosphate Kinases; D016271:Proto-Oncogene Proteins c-myc; D014157:Transcription Factors; D016159:Tumor Suppressor Protein p53; C517938:NME1 protein, human; D009701:Nucleoside-Diphosphate Kinase; D020559:Monomeric GTP-Binding Proteins