Vascular effect and immunity effect of steep pulse electric field on Walker 256-bearing Wistar mice

The vascular effect and immunity effect of SPEF on Wistar mice were studied, and the possible treatment mechanisms and clinical trial methods of SPEF were discussed. We tested lymphocyte proliferation ratio and activity of NK cell, and the contents of IFN-α and IL-4 in the serum lymphocyte were inspected with ELISA method. Moreover, macrophage were collected, the content of TNF-α excreted by macrophage were inspected with ELISA method, too. Statistical analysis was performed using the SPSS10.0 software package and t-test. VEGF level in test group was significantly decreased, and VEGF expression was weakened evidently. SPEF strengthened activity of NK cell, enlarged quantities of TNF-α from test group, accelerated exudation of TH1 cell factor and slowed exudation of TH2 cell factor. SPEF showed effective anti-tumor effect through restraining the formation of fresh vessels and baffling the birth and transfer of tumor cell. It could strengthen organism immunity function, and had visible effect on Walker-256 tumor.