چکیده انگلیسی:
Background: CDK6 is the key factor in regulation of the cell cycle and essential for passage into the G1 phase. It also plays an important role in the development of various tumors. In this cross-sectional study expression of the CDK6 protein in oral squamous cell carcinoma (OSCC) and healthy oral mucosa of controls was assessed to determine relations with malignant transformation and clinicopathologic factors. Method: A total of 60 samples, 45 from OSCCs and 15 from healthy tissue, underwent immunohistochemistry for CDK6. Nuclear and cytoplasmic staining of keratinocytes was considered as positive and the percentages of positive cells were calculated. Results: Expression of CDK6 was detected in 55.6% of OSCC samples (25 cases) and 13.3% of controls (2 cases), the difference being significant. Mean percentage of CDK6 stained cells was 24.2±29.3 in the OSCC cases and 4.33±2.1 in the control group, again statistically significant. No relationship was detected between CDK6 expression and clinicopathologic factors. Conclusion: Overexpression of CDK6 observed in OSCC points to a role for this protein in oral carcinogenesis.
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