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Ninety-eight patients with histologically confirmed ovarian tumors (77 primary ovarian carcinomas of stages T 1  to T 3  according to the postoperative histopathological classification pTNM classification, 14 ovarian metastases of various origins and seven benign ovarian tumors) were investigated with regard to the concentration of urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor (PAI-1) in membrane extracts of tumors. The results were correlated with the clinical course and with histopathological findings. With more advanced stage of primary ovarian carcinomas, there was a highly significant rise in the membrane concentrations of both uPA and PAI-1. However, increasing dedifferentiation of the tumors correlated only with uPA, but not with PAI-1. There was no correlation between the number of steroid receptors for estradiol and progesterone and the content of uPA or PAI-1 in the primary ovarian carcinomas. In the 14 ovarian metastases of different origins incluced in the study, the contents of uPA and PAI-1 were comparable to those of primary ovarian carcinomas.

clinical chemistry and laboratory medicine

Urokinase and Plasminogen Activator-Inhibitor (PAI-1) Status in Primary Ovarian Carcinomas and Ovarian Metastases Compared to Benign Ovarian Tumors as A Function of Histopathological Parameters