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• W2108595952 abstract "Regional infusion chemotherapy for the treatment of primary or secondary hepatic cancer should allow delivery of a higher drug concentration to the tumor with decreased systemic exposure when compared with systemic therapy. Fifteen rabbits, each implanted with two hepatic Vx-2 tumors, were treated with infusion of Adriamycin (3 mg/kg and 7.5 muCi of [14C]Adriamycin) through the hepatic artery (n = 5), portal vein (n = 5), and a systemic vein (n = 5) at 20 mg/min. 99Tc-labeled macroaggregated albumin flow images documented specific hepatic perfusion in selected rabbits using this technique. Thirty min after infusion the animals were sacrificed, and multiple specimens of liver, tumor, and heart were taken for liquid scintillation counting and high-performance liquid chromatography. The 14C label remained associated with Adriamycin and metabolites. After systemic infusion 11.5 nmol/g of Adriamycin were found in tumor, and 32.4 nmol/g were found in liver. Infusion of Adriamycin through the hepatic artery produced drug levels of 34.3 nmol/g of tumor and 48.4 nmol/g of liver, while infusion through the portal vein produced drug levels of 6.5 nmol/g of tumor and 54.4 nmol/g of liver. The drug concentration in tumor was significantly higher after hepatic artery infusion compared with systemic (P less than 0.05) or portal vein (P less than 0.01) infusion. The tumor/liver ratio of [14C]Adriamycin tissue levels after hepatic artery infusion was greater than that measured after systemic vein treatment (no overlap of the 90% confidence intervals). Systemic infusion of Adriamycin produced a higher level of Adriamycin in the heart (13.6 nmol/g) than did hepatic artery (10.9 nmol/g) or portal vein (8.9 nmol/g) infusion. Hepatic artery infusion achieved the highest tumor Adriamycin level compared with systemic vein and portal vein infusion. The results suggest that these tumor implants are supplied primarily by the hepatic artery, that clearance of Adriamycin is efficient after regional infusion, and that systemic toxicity may be reduced using intraarterial infusion of Adriamycin for hepatic tumors." @default.
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• W2108595952 date "1988-08-15" @default.
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• W2108595952 title "Increased adriamycin levels in hepatic implants of rabbit Vx-2 carcinoma from regional infusion." @default.
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