[Effect of interventional chemothermotherapy on vascular permeability of tumor liver tissue and normal liver tissue in VX-2 tumor-bearing rabbits].

Background & Objective: It was reported that heating could enhance the sensitivity of chemotherapy with Adriamycin and increase the intracellular content of Adriamycin. The aim of this study was to investigate the effect of interventional chemothermotherapy on vascular permeability of tumor liver tissue and normal liver tissue in VX-2 tumor-bearing rabbits.

Methods: Thirty rabbits used as implanted hepatocarcinoma model were randomly divided into 3 groups: non-perfusion group (injected only with 1% Evans blue after catheterization), normothermic perfusion group (the perfusion fluid was 25 degrees C normal solution), and hyperthermic perfusion group(the perfusion fluid was 60 degrees C normal solution). The contents of Evans blue in the tissues of three groups, which were used as the indices of vascular permeability, were calculated by the standard curve and spectrophotometry.

Results: The Evans blue contents in tumor liver tissue and normal liver tissue is statistically different (P < 0.05). There was no over difference of the Evans blue contents in two kinds of tissue between normal perfusion group and non-perfusion group. There was overt difference of the Evans blue contents in two kinds of tissue between hyperthermic perfusion group and normothermic perfusion group.

Conclusion: Interventional chemothermotherapy could increase the vascular permeability of normal liver tissue and tumor liver tissue.