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When floxuridine is given by rapid intra-arterial injection it is apparently rapidly catabolized to 5- fluorouracil. Thus, rapid injection of floxuridine produces the same toxic and antimetabolic effects as does 5-fluorouracil. The primary effect is to interfere with the synthesis of deoxyribonucleic acid (DNA) and to a lesser extent inhibit the formation of ribonucleic acid (RNA). However, when floxuridine is given by continuous intra-arterial infusion its direct anabolism to floxuridinemonophosphate is enhanced, thus increasing the inhibition of DNA.
Floxuridine is metabolized in the liver. The drug is excreted intact and as urea, fluorouracil, α-fluoro- β-ureidopropionic acid, dihydrofluorouracil, α-fluoro-β-guanidopropionic acid and α-fluoro-β-alanine in the urine; it is also expired as respiratory carbon dioxide. Pharmacokinetic data on intra-arterial infusion of floxuridine are not available.
Last reviewed on RxList: 11/29/2016
This monograph has been modified to include the generic and brand name in many instances.
Additional Floxuridine Information
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