[Effects of various agents on human choriocarcinoma transplanted to nude mice]

The effects of various anticancer agents on human choriocarcinoma transplanted to nude mice, specifically, inhibition effects on tumor growth and survival rate were studied to establish an appropriate chemotherapy for refractory choriocarcinoma. The agents studied were methotrexate (MTX), actinomycin D (ACD), cyclophosphamide (CPM), vincristine (VCR), L-PAM (MPI), bleomycin (BLM), carboquone (CQ), cisplatin (CDDP), ACNU, MCNU, vinblastine (VLB), VP16-213, OK-432, Maruyama vaccine (SSM) and metronidazole (ME), and the following results were obtained: 1) The inhibition effects on tumor growth were obtained in the groups of VCR, VP16-213, CDDP, MPL, CPM and CQ; 2) The survival rate was 100% in the groups of MPL, BLM, and CQ. In the groups of ACD VLB, VP16-213 and VCR, all mice died. 3) MPL was found to be the most effective agent in terms of inhibitory effect and survival rate. In the future, combination chemotherapy including MPL and maintenance chemotherapy with MPL to refractory choriocarcinoma should be studied.