phenprocoumon and Neoplasm-Metastasis

Topics: Adult; Anticoagulants; Female; Humans; Male; Neoplasm Metastasis; Neoplasms; Phenprocoumon; Postoperative Complications; Prognosis; Thromboembolism

Topics: 4-Hydroxycoumarins; Animals; Blood Coagulation; Factor IX; Lung Neoplasms; Male; Mice; Mice, Inbred C57BL; Neoplasm Metastasis; Neoplasm Transplantation; Neoplasms, Experimental; Phenprocoumon; Transplantation, Isogeneic; Vitamin K Deficiency

The effects of long-term anticoagulation with phenprocoumon on growth of the Lewis lung carcinoma (3LL) were studied. Oral anticoagulation initiated at the day of i.m. transplantation of the 3LL into C57BL mice significantly inhibited primary tumour growth and reduced the number of spontaneous metastases to the lungs. Intermittent anticoagulation was without effect on metastasis formation but still retarded primary growth. There was no influence of anticoagulation on the mean survival time (MST) of tumour-bearing animals. Phenprocoumon appears to improve the results of cyclophosphamide of 5-fluorouracil treatment, but there were no statisticially significant differences. In contrast, bleomycin treatment in combination with adjuvant anticoagulation suggested a possible drug synergy. No significant influence of anticoagulation on the response of the primary tumour to irradiattion was found, though the MST of irradiated and anticoagulated animals was greater than in the solely irradiated controls. The present investigations suggest that coumarin derivatives have some direct tumour-inhibiting capacities, but exert their antimetastatic action via deceleration of the blood clotting mechanism.

Topics: 4-Hydroxycoumarins; Animals; Bleomycin; Cyclophosphamide; Dose-Response Relationship, Drug; Female; Lung Neoplasms; Male; Mice; Mice, Inbred C57BL; Neoplasm Metastasis; Neoplasm Transplantation; Neoplasms, Experimental; Phenprocoumon

In a collective of 200 Wistar rats, the influence of anticoagulants upon the rat tail tumor (Walker 256 carcinosarcoma) was checked with and without irradiation. After implantation of the tumor and development of a certain definite tumor volume, the animals were divided into four different groups of 50 rats each. The first one was the control group without any manipulation, the second received an one-stage X-irradiation with 2500 R SD directed to the tail tumor, the third was treated with an oral dose of Phenprocoumon which was added to the daily drinking quantity (0.1 mg/kg body weight), and the fourth group was given an one-stage X-irradiation together with the oral Phenprocoumon treatment. The influence of these different treatments on the growth of the primary tumor, on the incidence of metastases and on the death rate was checked up. The best therapeutical effect was observed with combined radiation and Phenprocoumon treatment. The therapy resulted in an almost complete growth rate depression of the primary tumor, in an early tendency of remission of the primary tumor, a 42 per cent decrease of the incidence of metastases to the lung, and a 42 per cent increase of the survival rate. With regard to the frequency of metastases and to the survival rate, treatment with Phenprocoumon alone showed significantly better results as sole radiation treatment.

Topics: Animals; Carcinoma 256, Walker; Coumarins; Neoplasm Metastasis; Phenprocoumon; Rats; Remission, Spontaneous; Tail

The frequency of metastases of malignant diethylnitrosamine-induced hepatomas and haemangioendotheliomas of the liver of female Sprague-Dawley rats (29%) was not influenced by application of acetyl-salicylic acid or phenprocoumon. Likewise the anticoagulants did not alter tumor yields and induction periods.

Topics: Animals; Anticoagulants; Aspirin; Carcinoma, Hepatocellular; Coumarins; Diethylnitrosamine; Female; Hemangioendothelioma; Liver Neoplasms; Lung Neoplasms; Neoplasm Metastasis; Phenprocoumon; Rats