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- W2028124995 abstract "To analyse growth characteristics of human renal cell tumors, 66 renal cell carcinomas and one oncocytoma were investigated concerning the proliferative activity by immunohistochemical demonstration of the Ki-67 antigen (clone MIB1) and the apoptotic rate using the terminal deoxynucleotidyl-transferase mediated dUTP-fluorescin nick end labelling (TUNEL) method. The TUNEL method indicates DNA double strand breaks considered as a hallmark of programmed cell death (apoptosis). Apoptotic cells were observed in 57 of 67 cases. The apoptotic rate (percentage of stained tumor cells) varied from 0% to 54.1%. GI carcinomas possessed a statistically significant higher apoptotic rate than GII/GIII carcinomas. The proliferation index (percentage of Ki-67 labelled cells) ranged from 0.09% to 22.3%. The well differentiated carcinomas (GI) showed statistically lower proliferative activity than moderate and poorly differentiated carcinomas (GII/GII). The clear cell variant of renal cell carcinoma expressed a higher apoptotic rate than the chromophilic variant. A statistical correlation between apoptosis/proliferation and occurrence of metastasis could not be established. In progression from well to less differentiated renal cell carcinoma the decrease of apoptotic rate, as well as the increase of the proliferative activity, contributes to a rapid tumor growth." @default.
- W2028124995 created "2016-06-24" @default.
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- W2028124995 date "1997-01-01" @default.
- W2028124995 modified "2023-09-30" @default.
- W2028124995 title "Quantitative Evaluation of Apoptosis and Proliferation in Renal Cell Carcinoma. Correlation to Tumor Subtype, Cytological Grade According to Thoenes-Classification and the Occurrence of Metastasis" @default.
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- W2028124995 doi "https://doi.org/10.1016/s0344-0338(97)80088-x" @default.
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