Objective:To study the effect of paclitaxel liposome on the apoptosis of cancer cells in neck metastatic lymph node of rabbit tongue cancer.Methods:24 New Zealand rabbits with VX-2 tumor at tongue edge were divided into 6 groups randomly after neck lymph node metastasis.Paclitaxel liposome,free paclitaxel and 5％ glucose were injected into the lingual arterial and ear marginal vein,respectively.A week after chemotherapy metastasis lymph nodes were collected.The apoptosis of the cancer cells in the lymph nodes was examined by transmission electron microscope,flow cytometry,and SP immunohistochemical method for P53 protein expression of the cancer tissue.Results:The apoptosis rate of cancer cells in the intra-arterial chemotherapy group was higher than that in the intra-venous chemotherapy group,in the paclitaxel liposome injection group was higher than that in the free paclitaxel injection group(P ＜ 0.05).The positive rates of P53 protein expression in paclitaxel liposome group by intra-arterial injection was the lowest (P ＜ 0.05).Conclusion:Paclitaxel liposome is more effective than free paclitaxel,regional arterial infusion is more effective than intra-venous infusion in the apoptosis induction of lymph node metastasis cancer cells.

Objective:To study the effects of the treatment for rabbit VX-2 tongue cancer with paclitaxel or paclitaxel liposome infusion through rabbit lingual artery or ear vein infusion.Methods:24 rabbits with VX-2 tongue cancer were divided into 6 groups(n =40) randomly.The rabits in 3 groups were respectively treated by intra-arterial infusion with paclitaxel,paclitaxel liposome and 5％ glucose,and those in other 3 groups by ear vein infusion with the same materials.After 7 days of treatment,the lesion volumes were measured for response evaluation,cells apotosis in the cancer tissure was detected by llowcytometry,P53 protein expression was examined by immunohistochemical staining,respectively.The data was analyzed by SPSS 20.0 software package.Results:The response rate and apotosis of the tumor cells in intra-arterial infusion with paclitaxel liposome group were higher than those in the other groups(P ＜ 0.05),P53 protein expression was lower than that of the other groups (P ＜ 0.05).Conclusion:Intra-arterial infusion through tongue artery with paclitaxel liposome is more effective than the other methods in the treatment of rabbit VX-2 tongue cancer.