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- W2432133040 abstract "Expression of cell cycle modulators at the G1-S boundary, the retinoblastoma gene product (pRb), p21, p16, p27, p53, cyclin D1 as well as Ki-67 was investigated with 39 extrahepatic bile duct carcinomas (BDC). The Ki-67 labeling index (LI) was higher in cases with poor differentiation, lymph node metastasis and stage III or IV. Cyclin D1 overexpression was seen in 14 cases (35.8%). This phenomenon could be observed more frequently in cases of hilar carcinoma and with poor differentiation, perineural invasion, lymphatic invasion and lymph node metastasis. Furthermore, Ki-67 LI was higher in cyclin D1 overexpressing cases. p27 expression showed inverse relationships with Ki-67 LI, lymph node metastasis and aberrant p53 expression. Although p16 and p21 expression significantly correlated with lymph node metastasis and cyclin D1 overexpression, respectively, they were not related to Ki-67 LI. pRb expression was observed in all cases. Although the LI was lower in carcinoma of upper and middle bile ducts, no correlation was established between pRb expression and other clinicopathological parameters including Ki-67 LI. Aberrant p53 expression was observed in 13 cases (33.3%) and Ki-67 LI was significantly higher in these cases. These findings suggest that p27 and cyclin D1 strongly correlate with BDC proliferation and reflect the biological aggressiveness of this carcinoma." @default.
- W2432133040 created "2016-06-24" @default.
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- W2432133040 date "2000-04-19" @default.
- W2432133040 modified "2023-09-26" @default.
- W2432133040 title "Expression and clinical significance of the G1-S modulators in carcinoma of the extrahepatic bile duct." @default.
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