Proliferating cells, independent of their position in the cell cycle, contain a primer-dependent alpha-DNA polymerase (PDP); we have, therefore, tested the feasibility of the PDP assay in breast, ovarian, and head and neck tumors. Experimental results demonstrate that the PDP labeling index (PDP-LI) is constantly superior to the thymidine labeling index (TLI), which indicates the percentage of S phase cells. The PDP-LI/TLI ratios observed were 5.0 in breast cancer, 3.6 in ovarian cancer, and 2.5 in head and neck tumors. Higher PDP-LI scores have been obtained in metastatic breast tumor samples (PDP-LI = 8.8) compared to nonmetastatic tumors (PDP-LI = 4.9).
Proliferative activity of human solid tumors evaluated by thymidine labeling index and primer-dependent alpha-DNA polymerase / A., Alama; Conte, Pierfranco; E. D., Marco; R. E., Favoni; A., Nicolin. - In: ONCOLOGY. - ISSN 0030-2414. - STAMPA. - 43:(1986), pp. 385-389.
Proliferative activity of human solid tumors evaluated by thymidine labeling index and primer-dependent alpha-DNA polymerase.
CONTE, Pierfranco;
1986
Abstract
Proliferating cells, independent of their position in the cell cycle, contain a primer-dependent alpha-DNA polymerase (PDP); we have, therefore, tested the feasibility of the PDP assay in breast, ovarian, and head and neck tumors. Experimental results demonstrate that the PDP labeling index (PDP-LI) is constantly superior to the thymidine labeling index (TLI), which indicates the percentage of S phase cells. The PDP-LI/TLI ratios observed were 5.0 in breast cancer, 3.6 in ovarian cancer, and 2.5 in head and neck tumors. Higher PDP-LI scores have been obtained in metastatic breast tumor samples (PDP-LI = 8.8) compared to nonmetastatic tumors (PDP-LI = 4.9).
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