title: [Expression of cyclin D1 and its inhibitors and hTERT in ameloblastoma].
abstract: OBJECTIVE
  To investigate the expression of human telomerase reverse transcripase (hTERT), cyclin D1 mRNA, p16(INK4), p21(WAF1) mRNA and p27(KIP1) protein in human ameloblastoma (ABs).
  
  
  METHODS
  The expression of hTERT, cyclin D1, p16(INK4), p21(WAF1) mRNA and p27(KIP1) protein in 54 cases of human ABs were detected by in situ hybridization or immunohistochemistry.
  
  
  RESULTS
  The positive cases of hTERT mRNA, cyclin D1 mRNA was 51, 23, respectively. The positive cases of p16(INK4), p21(WAF1) mRNA and p27(KIP1) protein was 17, 12, 9. Comparing with recurred and transformed malignantly, the expression of hTERT mRNA, cyclin D1 mRNA increased, and the expression of p16(INK4), p21(WAF1) mRNA and p27(KIP1) protein decreased or lost. The expression of hTERT mRNA and pl6(INK4), p21(WAF1) mRNA and p27(KIP1) protein in ABs had middle to high negative relation (r(k) = -0.587, r(k) = -0.652, r(k) = -0.783, P < 0.001).
  
  
  CONCLUSIONS
  The hTERT mRNA expression in ABs is related to the reguation of pl6(INK4), p21(WAF1) mRNA and p27(KIP1) protein.
authors.affiliation: Dept. of Pathology, College of Stomatology, China Medical University, Shenyang 110002, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Zhong
authors.forename: Lin
authors.initials: L
authors.lastname: Wu
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.forename: Lin
authors.initials: L
authors.lastname: Hou
mesh_terms: D000564:Ameloblastoma; D019938:Cyclin D1; D050759:Cyclin-Dependent Kinase Inhibitor p21; D050760:Cyclin-Dependent Kinase Inhibitor p27; D016213:Cyclins; D006801:Humans; D007150:Immunohistochemistry; D012333:RNA, Messenger; D019098:Telomerase
chemical_list: D050759:Cyclin-Dependent Kinase Inhibitor p21; D016213:Cyclins; D012333:RNA, Messenger; D019938:Cyclin D1; D050760:Cyclin-Dependent Kinase Inhibitor p27; D019098:Telomerase