title: Over-expression of p53, p21 and Cdc2 in histologically negative surgical margins is correlated with local recurrence of laryngeal squamous cell carcinoma.
abstract: The aim of this study was to explore the relationship between the expression of p53, p21 and Cdc2 in the early laryngeal cancer with negative pathological margins and its local recurrence. During 2004-2010, a total of 85 patients with early laryngeal cancer were selected in Tangshan Union Hospital, Hebei, China, and immunohistochemical method was used to detect the expression of p53, p21 and Cdc2 in the negative pathological margin tissues. All patients were followed up for two years to collect pathological data for evaluating the survival and tumor recurrence. Two years after surgery 14 of 85 patients with laryngeal cancer presented with recurrence (recurrent group), while 71 patients without recurrence (none recurrent group). The positive rate of p53, p21 and Cdc2 protein in laryngeal cancer tissues was 60.0% (51/85), 38.8% (33/85) and 70.6% (60/85), respectively, while that of the three proteins in the cancer adjacent tissues was 36.5% (31/85), 21.2% (18/85) and 29.4% (25/85), respectively. The differentiation and TNM stage of tumor had no correlation with the three proteins. The positive rate of p53 in the surgical margin of the recurrent group and non recurrent group was 71.4% (10/14) and 29.6% (21/71) (P = 0.003), that of p21 was 50.0% (7/14) and 15.5% (11/71), (P = 0.011) and Cdc2 was 57.1% (8/14) and 23.9% (17/71) (P = 0.030), respectively. In conclusion, p53, p21 and Cdc2 may be involved in the occurrence, development and recurrence of laryngeal squamous cell carcinoma. Overexpression of p53, p21 and Cdc2 in the surgical margin of early laryngeal cancer is closely related to local recurrence of tumor.
authors.affiliation: Department of Radio-chemotherapy Oncology, Tangshan People's Hospital Tangshan 063001, China.
authors.forename: Jun-Quan
authors.initials: JQ
authors.lastname: Yang
authors.affiliation: Department of Pathology, Tangshan Union Hospital Tangshan 063004, China.
authors.forename: Hong-Xia
authors.initials: HX
authors.lastname: Liu
authors.affiliation: Department of Otorhinolaryngology, Tangshan Union Hospital Tangshan 063004, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liang
authors.affiliation: Department of Pathology, Tangshan Union Hospital Tangshan 063004, China.
authors.forename: Yu-Man
authors.initials: YM
authors.lastname: Sun
authors.affiliation: Department of Pathology, Tangshan Union Hospital Tangshan 063004, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Wu
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis*; D016203:CDC2 Protein Kinase; D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000473:pathology*; D050759:Cyclin-Dependent Kinase Inhibitor p21 / Q000032:analysis / Q000096:biosynthesis*; D018844:Cyclin-Dependent Kinases / Q000032:analysis / Q000096:biosynthesis*; D006801:Humans; D007150:Immunohistochemistry; D007822:Laryngeal Neoplasms / Q000378:metabolism / Q000473:pathology*; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D016159:Tumor Suppressor Protein p53 / Q000032:analysis / Q000096:biosynthesis*; D015854:Up-Regulation
chemical_list: D014408:Biomarkers, Tumor; D050759:Cyclin-Dependent Kinase Inhibitor p21; C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53; D016203:CDC2 Protein Kinase; C528899:CDK1 protein, human; D018844:Cyclin-Dependent Kinases
keywords: Cdc2; Laryngeal squamous cell carcinoma; immunohistochemistry; local recurrence; p21; p53