Rifampicin

Rifampicin is a bactericidal antibiotic drug of the rifamycin group. (In Vitro) :Rifampicin (100 mg/mL) can block the functional activity of P-glycoprotein. Rifampicin is not a substract for P-glycoprotein. The mechanism of rifampicin resistance is unassociated with the functional activity of P-glycoprotein. (In Vivo) :Rifampicin (200, 400 mg/kg) can induce fatty liver at high concentration. Rifampicin (30 mg/kg, i.p.) treatment of S464P biofilms in vivo results in a slight decline, but earlier rebinds in bioluminescence from these catheters compared with the parental signal, whereas rifampicin has no affect on bioluminescence in mice infected with mutant H481Y.