Electroporation： A New Approach Enhancing Antitumor Effects of Cytoxan

Electrochemotherapy (ECT) is a novel cancer treatment in which electric pulses (Eps) inducing cell membrane pored (electroporation) are used as a means of delivering antitumor drugs to the cytoplasm of cancer cells. In vitro, with scan electromicroscope (SEM) and Trypan blue staining examination, the best parameter of Eps of electroporation is studied by the S-180 cells exposed to EP with various voltages, pulses , capacitance. The best parameter of EP of electroporation is 600V/cm, 6 pulses, 10 μF. In the in vivo study, ECT is studied with the Cytoxan (CTX) injected directly into the tumor followed immediately by a local EP at the tumor site. Four parameters, which include the tumor inhibitory ratio, the curing ratio and the vas capillare of tumor, the tumor's histopathological characteristics are determined and compared among the ECT group, the control group, the EP-only group and the drug-only group. The results indicate that the antitumor effect of CTX is significantly enhanced by electroporation.