Aim: To investigate the therapeutic effect of the hepatic arterial administration of sorafenib in rabbit VX-2 hepatocellular carcinoma (HCC) model.
Methods: Rabbit VX-2 HCC models were established via implanting VX-2 tumors into the livers, and randomly divided into four groups, respectively treated with (1) The hepatic arterial administration of iodized oil alone (TACE-i), (2) The hepatic arterial administration of iodized oil and pharmorubicin (TACE-ip), (3) The hepatic arterial administration of iodized and cis-DDP (TACE-ic), (4) The hepatic arterial administration of iodized and sorafenib (TACE-is). The growth rate and intrahepatic metastasis of implanted VX-2 tumor in each rabbit were measured. Microvessel density (MVD) in the adjacent tissues of implanted VX-2 tumor were estimated by detecting the expression of CD34 and VEGF level in tumor adjacent tissues were also examined by Immunohistochemistry.
Results: Compared with other groups, TACE-is treatment group presented a better effect on inhibiting tumor growth rate and intrahepatic metastasis in rabbit VX-2 HCC model. The angiogenesis (assessed by MVD) in the adjacent tissues were suppressed more dramatically in TACE-is treated group. Moreover, TACE-is treatment did not significantly increase the levels of alanine transaminase and creatinine compared to the group with TACE-i treatment.
Conclusion: The hepatic arterial administration of sorafenib and iodized oil (TACE-is) effectively attenuates tumor growth and intrahepatic metastasis in rabbit VX-2 HCC model without obvious hepatic and renal toxicity. One of the related mechanisms may be due to the inhibition of angiogenesis in the adjacent tissues. Our data indicated that TACE-is may be a secure and effective treatment for HCC.
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