Tumor uptake of radiolabeled pyrimidine bases and pyrimidine nucleosides in animal models —II. 6-[3H]-5-fluoro-2′-deoxyuridine

The short-term differential distribution of 6-[ 3H]-5-fluoro-2′-deoxyuridine (6-[ 3H]-5-FUdR) has been studied in vivo in the Ehrlich Ascites carcinoma (EACa) and Lewis Lung carcinoma (LLCa) tumor models in mice. Significant uptake of the nucleoside by the spleen, bone marrow, gastrointestinal tract...

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Veröffentlicht in:International journal of nuclear medicine & biology 1979, Vol.6 (2), p.103-107
Hauptverfasser: Abrams, D.N., Knaus, E.E., Lentle, B.C., Wiebe, L.I.
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container_end_page 107
container_issue 2
container_start_page 103
container_title International journal of nuclear medicine & biology
container_volume 6
creator Abrams, D.N.
Knaus, E.E.
Lentle, B.C.
Wiebe, L.I.
description The short-term differential distribution of 6-[ 3H]-5-fluoro-2′-deoxyuridine (6-[ 3H]-5-FUdR) has been studied in vivo in the Ehrlich Ascites carcinoma (EACa) and Lewis Lung carcinoma (LLCa) tumor models in mice. Significant uptake of the nucleoside by the spleen, bone marrow, gastrointestinal tract and liver were observed, along with tumor:blood ratios of radioactivity in the region of 50:1. The maximum uptake of 6-[ 3H]-5-FUdR by the EACa and LLCa tumors represented 4.3% and 5.3% of the dose respectively. Approximately 60% of the administered dose was excreted in the urine within 6 h, and 80% of the dose was present in 72 h urine. Analysis of excretion data indicated that the fast elimination component half-times were 3.8 h (EACa) and 1.1 h (LLCa). Respective slow component half-times were 49 and 80 h.
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ispartof International journal of nuclear medicine & biology, 1979, Vol.6 (2), p.103-107
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subjects Animals
Carcinoma, Ehrlich Tumor - metabolism
Carcinoma, Ehrlich Tumor - urine
Floxuridine - metabolism
Floxuridine - urine
Half-Life
Lung Neoplasms - metabolism
Lung Neoplasms - urine
Male
Mice
Neoplasm Transplantation
Neoplasms, Experimental - metabolism
Neoplasms, Experimental - urine
Pyrimidine Nucleosides - metabolism
Pyrimidine Nucleosides - urine
Time Factors
Tritium
title Tumor uptake of radiolabeled pyrimidine bases and pyrimidine nucleosides in animal models —II. 6-[3H]-5-fluoro-2′-deoxyuridine
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