[The study of proliferation of cells at the invasive tumor front of squamous cell carcinoma of tongue].
OBJECTIVE
To evaluate the value of the invasive front grading (IFG), the proliferative activity of cells at the invasive tumor front (ITF) of squamous cell carcinoma (SCC) of tongue.


METHODS
All the tumors were graded using IFG grading. The expression of PCNA, Ki67 and staining and measurement of AgNOR number were evaluated at the ITF and the other parts of the same tumor.


RESULTS
The expression of PCNA (P < 0.001), Ki67 (P < 0.001), AgNOR number (P < 0.001) at the ITF were higher than those of other parts. The IFG score was significantly correlated with the expression of PCNA (P < 0.05), AgNOR number (P < 0.01) at the ITF. The complete IFG score (P < 0.01) was significant in both univariate and multivariate cox analysis; the AgNOR number at the ITF (P < 0.05) was only significant in univariate analysis (P < 0.05).


CONCLUSIONS
The ITF of SCCs of tongue differentiate poorer than the other parts and is active in proliferation. The complete IFG score and the AgNOR number at the ITF could be a valuable indication to predict the prognosis of SCCs of tongue.
Wang
Xin-Hong
XH
Department of Oral Pathology, School of Stomatology, Wuahn University, Wuhan 430079, China.
Wang
Shuo-Zhi
SZ
Chen
Xin-Ming
XM
Li
Yuan
Y
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002455:Cell Division; D005260:Female; D006801:Humans; D019394:Ki-67 Antigen / Q000032:analysis; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009697:Nucleolus Organizer Region / Q000473:pathology; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis; D014062:Tongue Neoplasms / Q000473:pathology*
D019394:Ki-67 Antigen; D018809:Proliferating Cell Nuclear Antigen