- 著者
- Takeo KAWAGUCHI Masahiko SAITO Mineo SANEYOSHI
- 出版者
- The Japanese Cancer Association
- 雑誌
- Japanese Journal of Cancer Research GANN (ISSN:09105050)
- 巻号頁・発行日
- vol.77, no.5, pp.436-439, 1986 (Released:2008-03-17)
- 参考文献数
- 13
The antitumor effect of 5-fluoro-2'-deoxy-uridine (FUdR) esters on L1210 in mice was enhanced by the simultaneous po administration of FUdR esters and acyclothymidine [5-methyl-1-(2'-hydroxyethoxymethyl)uracil]-esters. Acyclothymidine (AcTdR), which strongly inhibits the phospholytic degradation of FUdR, was released from the AcTdR esters by enzymatic hydrolysis. The FUdR esters and AcTdR esters were found to be compatible in terms of their physicochemical properties and susceptibility to enzymatic hydrolysis.
- 著者
- Sandro GRILLI Giancarlo ARFELLINI Annamaria COLACCI Mario MAZZULLO Giorgio PRODI
- 出版者
- The Japanese Cancer Association
- 雑誌
- Japanese Journal of Cancer Research GANN (ISSN:09105050)
- 巻号頁・発行日
- vol.76, no.8, pp.745-751, 1985 (Released:2008-03-17)
- 参考文献数
- 17
- 被引用文献数
- 1
At 22hr after ip injection into male Wistar rats and BALB/c mice, chlorobenzene was covalently bound to DNA, RNA and proteins of the liver, kidney and lung, as has been found with various weak carcinogens. A microsome-mediated interaction with DNA occurred in vitro. The interaction was enhanced by pretreatment in vivo with phenobarbitone but was suppressed by addition of 2-diethylaminoethyl-2, 2-diphenylvalerate•HCl in vitro. These results indicate the involvement of cytochrome P-450. Liver microsomes were efficient bioactivators, whereas cytosol was ineffective. The extent of in vitro interaction of chlorobenzene with synthetic polyribonucleotides was of the same order as that with DNA. Finally, ultraviolet irradiation (λ=254nm or λmax=365nm) activated this environmental contaminant to forms capable of interacting with DNA. The results represent evidence for genotoxicity of chlorobenzene.
- 著者
- Mitsuaki MAEDA Noriko A. UCHIDA Takuma SASAKI
- 出版者
- The Japanese Cancer Association
- 雑誌
- Japanese Journal of Cancer Research GANN (ISSN:09105050)
- 巻号頁・発行日
- vol.77, no.6, pp.523-525, 1986 (Released:2008-03-17)
- 参考文献数
- 5
- 被引用文献数
- 3
Seventeen liposoluble bis (carboxylato)-cyclohexane-1, 2-diammineplatinum (II) and bis (carboxylato)-cis-diammineplatinum(II) complexes were synthesized and tested for antitumor activity against leukemia L1210 cells in mice. The former complexes had excellent antitumor activity without any toxicity to the host at the therapeutic dose when used with lipiodol as a carrier solvent. The latter complexes had neither antitumor activity nor toxicity in vivo. The former complexes were gradually released from lipiodol to saline in vitro; the latter were not. The activity depended on the chain length of the carboxylato residue and also on the molecular shape of the ligand part of the complexes.
- 著者
- Masaya IMOTO Kazuo UMEZAWA Keiko KOMURO Tsutomu SAWA Tomio TAKEUCHI Hamao UMEZAWA
- 出版者
- The Japanese Cancer Association
- 雑誌
- Japanese Journal of Cancer Research GANN (ISSN:09105050)
- 巻号頁・発行日
- vol.78, no.4, pp.329-332, 1987 (Released:2008-03-17)
- 参考文献数
- 12
- 被引用文献数
- 3
A tyrosine protein kinase inhibitor, erbstatin, showed no antineoplastic effect on L-1210 mouse leukemia when it was injected alone. Erbstatin was found to be inactivated by incubation in serum, but not in dialyzed serum. It was also inactivated in reconstituted serum containing dialyzed serum components and ferric or ferrous ion. Because erbstatin was considered to be inactivated by the ferric or ferrous ion in serum, foroxymithine, which is a potent chelator for the ferric ion, was given to the mice together with erbstatin. Administration of both erbstatin and foroxymithine showed antineoplastic activity against L-1210 leukemia.
- 著者
- Gerhard N. SCHRAUZER Tammy MOLENAAR Sherri MEAD Klaus KUEHN Hiroshi YAMAMOTO Eiji ARAKI
- 出版者
- The Japanese Cancer Association
- 雑誌
- Japanese Journal of Cancer Research GANN (ISSN:09105050)
- 巻号頁・発行日
- vol.76, no.5, pp.374-377, 1985 (Released:2008-03-17)
- 参考文献数
- 15
Selenium concentrations in whole blood of Japanese and American women with and without breast cancer and benign fibrocystic breast disease were determined. The observed blood Se levels of healthy Japanese women (0.286±0.021μg/ml) were similar to previously reported values for healthy Japanese adults. The Japanese patients with benign breast disease and with breast cancer exhibited blood selenium concentrations of 0.200±0.045 and 0.195±0.057μg/ml, respectively. The mean blood Se concentration of Japanese breast cancer patients with recurrence was 0.188±0.061μg/ml. The mean blood Se concentrations of healthy American women from San Diego, Calif., were 0.191±0.023μg/ml; of women with benign fibrocystic disease, 0.142±0.010μg/ml; and of breast cancer patients, 0.167±0.032μg/ml. The higher blood Se concentrations of Japanese healthy subjects as compared to healthy Americans can be attributed to differences in the dietary Se intakes; low blood Se concentration may be indicative of increased breast cancer risk.