conclusions verapamil and rifampin were found specific and effective against p-gp expression in hcc. in conclusion, treatment efficacy of most anticancer drugs is increased in combination with verapamil and rifampin against most advanced hcc. objectives the aim of this study was to elucidate the effect of potent carcinogen nitrosamine with and without verapamil and rifampin drugs on p-gp expres...

Objective(s): Chemoresistance remains the main causes of treatment failure and mortality in cancer patients. There is an urgent need to investigate novel approaches to improve current therapeutic modalities and increase cancer patients' survival. Induction of drug efflux due to overexpression of                  P-glycoproteins is considered as an important leading cause of multidrug resistance...