RESUMO
OBJECTIVE: To study the effects of Semen Litchi on the expressions of S180 and EAC tumor cells and Bax and Bcl-2 proteins in rats. METHODS: EAC, S180 and hepatic carcinoma tumor-bearing mice models were established in mice by inoculating them with tumor strains. EAC, S180 and hepatic carcinoma suspensions were diluted respectively with normal saline in a ratio of 1∶1 for the preparation of tumor-bearing ascites suspension. Each rat was subcutaneously inoculated with the mixture 0.2 mL via axilla 24 hours before medication, with the whole sterile operation finished within 60 minutes. After treated with Semen Litchi for 10 consecutive days, the growth of EAC, S180 and hepatic carcinoma in mice was observed. RESULTS: The growth of EAC and S180 and hepatic carcinoma cells in mice was significantly inhibited by Semen Litchi. CONCLUSION: Semen Litchi can inhibit the growth of S180 and EAC tumor cells in vitro and in vivo, and its antitumor effect is related to its ability to promote apoptotic of tumor cells.
RESUMO
Objective To observe the molecular weight distribution of soybean peptides prepared by complex enzyme hydrolysation and tumor inhibitory effect in vivo or in vitro. Method The soybean protein was enzymolyzed to soybean peptides by Flavourzyme, Alealase and neutral protease, at(50-55)℃, followed by separation, absorption,affination, ultra centrifuge and spray drying. The soybean peptides were passed Sephadex G25 column at 0.5ml/min with 0.1mol/L Tris-HCl buffer. The fragment of fluid collected was determined by UV at 280nm and HPLC. Then the molecular weight distribution was calculated. The inhibitory effect on ansplant glioma (G422) at dose 1.25, 2.5 and 5g/kg bw (ig daily for 11 d) was tested in mice and in Hep-2 in vitro. Results The peptides contents in three batches were 54.6%, 51.9%, 51.8% respeclively. The molecular weight