[Antibacterial activity of antibiotics in human bile (author's transl)].

Marked differences exist between antibacterial activity in human bile and broth. Whereas penicillins and cephalosporines exhibit virtually the same activity in broth and bile, tetracycline shows a great lose, and the activity of the aminoglykosides is increased in bile. Minimal inhibitory concentrations of chlorampenicol and co-trimoxazole are also different in broth and human bile. The differences in activity are related to the pH although not all deviations can be attributed to the effect of the pH. These results should be considered when treating gallbladder infections.