ABSTRACT
<p><b>OBJECTIVE</b>To study the antitumor effects of Chansu injection on transplanting- tumor of S(180 ) in mice and human colon cancer HT-29 in nude mice.</p><p><b>METHODS</b>Using transplanting- tumor models of S(180 ) in mice and human colon cancer HT-29 in nude mice,the tumor inhibitive ratio(IR) of Chansu injection was determined and apoptosis was microscopically observed.</p><p><b>RESULTS</b>Compared with tumor-negative control groups, IR at different dosage of Chansu in models of S(180) and HT-29 was 19.1% - 38.2% and 9.5% - 15.8% respectively,there was a dose-dependent relationship in models of S ( 180) (P< 0.05) and HT- 29 (P> 0.05). The tumor growth was markedly inhibited by cyclophosphamide (CTX) in model of S( 180) with IR of 70.7% and in model of HT-29 with IR of 67.1%, compared with control groups, both P< 0.01; apoptosis induced by CTX was markedly observed by in microscope examination. No significant side effects were shown in the study group.</p><p><b>CONCLUSIONS</b>Chansu injection can significantly inhibit tumor growth in model of S(180), but not in model of HT- 29. Different type of tumor has different drug-sensitivity.</p>