title: Superiority of combined chemo-embolization and portal infusion with 5-fluorouracil over locoregional infusion concepts in Novikoff hepatoma-bearing rats.
abstract: The aim of this study was to investigate experimentally whether there is a superior effect of the combination of hepatic artery chemo-embolization with portal vein infusion over either of the two treatment modalities alone. Novikoff hepatoma cells transplanted under the liver capsule of Sprague Dawley rats were used as a model. Tumor growth was assessed at 7 and 21 days after tumor inoculation. The prolamine solution Ethibloc was employed for embolization, and 5-fluorouracil was used as a chemotherapeutic agent for both infusion and chemo-embolization. All arterial treatment modalities were administered in a super-selective manner. There was no intolerable toxicity after dosages of 55 to 125 mg 5-fluorouracil/kg body weight. With regard to therapeutic efficacy the results show that embolization is an effective therapeutic means for inducing tumor necrosis in selected liver areas. As a consequence, the ranking of all treatment modalities was based on the combined evaluation of tumor size and extent of tumor necrosis. According to this evaluation, hepatic artery chemo-embolization was superior to the respective type of infusion (P<0.01). In addition, the combination of both modalities in the form of hepatic artery chemo-embolization and portal vein infusion was effective in destroying more than 97% of vital tumor tissue (P<0.01). These results suggest the need for a comparative clinical study.
mesh_terms: D000818:Animals; D003131:Combined Modality Therapy; D003973:Diatrizoate; D004338:Drug Combinations; D004621:Embolization, Therapeutic; D005227:Fatty Acids; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage*; D006499:Hepatic Artery; D008114:Liver Neoplasms, Experimental / Q000628:therapy*; D011169:Portal Vein; D011409:Propylene Glycols; D051381:Rats; D017207:Rats, Sprague-Dawley; D015028:Zein
chemical_list: D004338:Drug Combinations; D005227:Fatty Acids; D011409:Propylene Glycols; D003973:Diatrizoate; D015028:Zein; C020481:alcoholic prolamine solution; D005472:Fluorouracil