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  • 1
    ISSN: 1432-1335
    Keywords: Sprague-Dawley-Ratten ; Verimpfen von Yoshida-Sarkom-Zellen ; Colon descendens ; Cyclophosphamid ; BCNU ; Methyl-CCNU ; Sprague-Dawley rats ; Inoculation of Yoshida sarcoma cells ; Descending colon ; Cyclophosphamide ; BCNU ; Methyl-CCNU
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Three thousand Yoshida sarcoma cells were inoculated into the wall of the descending colon of each of 120 male Sprague-Dawley rats. On day 8 after the tumor implantation, the animals were at random divided into four groups of 30 rats each. The effect of cyclophosphamide (70 mg/kg), BCNU (25 mg/kg), and methyl-CCNU (45 mg/kg) after single i.p. application was investigated. The Yoshida sarcoma transplanted into the colon is sensitive to all three chemotherapeutic drugs. At the doses given cyclophosphamide showed the best results. The two nitrosoureas had a comparable antitumor activity but methyl-CCNU showed a more distinct toxic effect. The introduction of this model for testing new cytostatics in animal experiments is discussed.
    Notes: Zusammenfassung Einhundertzwanzig männlichen Sprague-Dawley-Ratten wurden jeweils 3000 Zellen eines Yoshida-Sarkoms in die Wand des Colon descendens verimpft. Am 8. Tag nach der Tumorimplantation wurden die Tiere randomisiert in vier Versuchsgruppen von jeweils 30 Ratten aufgeteilt. Die Wirkung von Cyclophosphamid (70 mg/kg), BCNU (25 mg/kg) und Methyl-CCNU (45 mg/kg) bei einmaliger i.p. Gabe wurde untersucht. Das ins Colon transplantierte Yoshida-Sarkom ist gegeüber allen drei Chemotherapeutika sensibel. Bei den gewählten Dosierungen zeigte Cyclophosphamide die günstigsten Ergebnisse. Die beiden Nitrosoharnstoffe waren in ihrer Antitumoraktivität vergleichbar, während bei Methyl-CCNU die toxischen Wirkungen sich als ausgeprägter erwiesen. Der Einsatz des Modells im Rahmen der tierexperimentellen Prüfung neuer Cytostatika wird diskutiert.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 95 (1979), S. 39-42 
    ISSN: 1432-1335
    Keywords: Tumors of the forestomach ; Acetoxymethyl-methyl nitrosamine ; Experimental chemotherapy ; Bleomycin, methotrexate, 5-fluorouracil, 1,2-bis-(2-chloroethyl)-1-nitrosourea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Tumors of the forestomach were induced in male Sprague-Dawley rats by oral application of acetoxymethyl-methylnitrosamine (AMMN) in single weekly doses of 3.5 mg/kg body weight for 10 weeks. 100±5 days after the beginning of carcinogen treatment exploratory laparotomy was performed. One hundred animals in the same stage of tumor development were divided at random into one control group and four groups treated with cytostatics. Bleomycin (BLM), methotrexate (MTX), 5-fluorouracil (5FU), and 1,2-bis-(2-chloroethyl)-1-nitrosourea (BCNU) were tested in groups of 20 rats each. Only in animals receiving repeated doses of BLM a slight tumor response was observed but no increase in median survival times was seen. No therapeutic effects of the other drugs used were demonstrable.
    Type of Medium: Electronic Resource
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