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  • Title: [Anti-tumor and adverse effect of etoposide and cisplatin on human choriocarcinoma transplanted to nude mice--a correlation between effect and tissue distribution of the drugs].
    Author: Adachi S, Yoshiya N, Misawa Y, Ishida M, Kanazawa K, Takeuchi S, Tanaka K.
    Journal: Nihon Sanka Fujinka Gakkai Zasshi; 1986 Nov; 38(11):2031-6. PubMed ID: 3794452.
    Abstract:
    The study dealt with anti-tumor and adverse effects of etoposide and cisplatin on human choriocarcinoma cell line (GCH-1) transplantable in nude mice in relation to the rate of their uptake into tumor tissue. Nude mice were divided into 3 groups (etoposide, cisplatin and MTX-group), 7 to 9 per group and received drug treatment which started when their tumor grew to 100 approximately 300 mm3 in volume. All drugs were intraperitoneally administrated to nude mice (each drug: 1/4 mouse LD50 dose X3, weekly). The inhibiting action on the tumor was observed to be etoposide greater than cisplatin greater than MTX. The body weight loss of nude mice was observed to at its maximum in the cisplatin-treated group. The serum beta-HCG level did not rise in the drug-treated groups but rose in the non-treated control group. No histopathological changes characteristic of each drug were found. A concentration of etoposide and cisplatin in various tissues was serially measured after one shot intraperitoneal injection of etoposide 25 mg/kg or cisplatin 5 mg/kg. Etoposide reached its peak concentration after 30 minutes in tumor, liver and kidney and, after 4 hours, was left with 37.1%, 10.4% and 2.3% concentrations after 30 minutes in tumor, liver and kidney, respectively. Cisplatin showed similar kinetics, but was found to remain at a comparatively high concentration in both liver and kidney. Thus, it was demonstrated that etoposide and cisplatin were active against the human choriocarcinoma cell line. Furthermore, the less adverse effect of etoposide was felt to be partially due to its lower residue in liver and kidney.
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