Abstract |
The antitumor activity of 1-beta-D-arabinofuranosylcytosine-5'-alkylphosphates (CnPCAs) against L1210 leukemia in mice after oral administration was demonstrated. The optimum length of the alkyl group on the phosphate moiety of CnPCA for exhibiting a high antitumor activity was found to be between tetradecyl (C14) and tricosyl (C23). The most active alkyl derivative in this system was found to be 1-beta-D-arabinofuranosylcytosine-5'-stearylphosphate (C18PCA). The optimum and minimum effective doses of C18PCA were 100 and 6.25 mg/kg/day (q1d, day 1 to day 5), respectively. The maximum T/C% of C18PCA was approximately 220. The antitumor activity of C18PCA was not greatly dependent on the treatment schedule and route. Plasma concentration of 1-beta-D-arabinofuranosylcytosine ( ara-C) remained in the range of 0.4 to 0.75 nmol/ml [corrected] for 24 h after oral administration of 100 mg/kg (170 mumol/kg) of C18PCA. These results indicate that C18PCA administered per orally is absorbed intact through the gastrointestinal tract and area-C is released of long period of time. C18PCA is regarded as an orally active depot form of ara-C.
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Authors | K Kodama, M Morozumi, K Saitoh, A Kuninaka, H Yoshino, M Saneyoshi |
Journal | Japanese journal of cancer research : Gann
(Jpn J Cancer Res)
Vol. 80
Issue 7
Pg. 679-85
(Jul 1989)
ISSN: 0910-5050 [Print] Japan |
PMID | 2507491
(Publication Type: Journal Article)
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Chemical References |
- Antineoplastic Agents
- Arabinonucleotides
- Cytosine Nucleotides
- Cytarabine
- 1-arabinofuranosylcytosine-5'-stearylphosphate
- Cytidine Monophosphate
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Topics |
- Administration, Oral
- Animals
- Antineoplastic Agents
(administration & dosage, pharmacokinetics)
- Arabinonucleotides
(pharmacokinetics, therapeutic use)
- Cytarabine
(pharmacokinetics, therapeutic use)
- Cytidine Monophosphate
(pharmacokinetics, therapeutic use)
- Cytosine Nucleotides
(therapeutic use)
- Drug Administration Schedule
- Leukemia L1210
(drug therapy)
- Metabolic Clearance Rate
- Mice
- Solubility
- Structure-Activity Relationship
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