title: Effect of protein binding on antibiotic activity in vivo.
abstract: Using a group of penicillins all belonging to the same chemical class, antibacterial activity against Staphylococcus aureus was determined in vitro and also in vivo by use of an intraperitoneal infection in mice. The compounds all showed essentially the same level of activity in vitro but differed markedly in their activity in vivo. This activity in vivo could be correlated directly with the extent of binding in mouse serum.
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000097:blood / Q000494:pharmacology*; D001798:Blood Proteins / Q000378:metabolism; D055598:Chemical Phenomena; D002621:Chemistry; D066298:In Vitro Techniques; D051379:Mice; D008826:Microbial Sensitivity Tests; D010406:Penicillins / Q000494:pharmacology; D011485:Protein Binding; D013203:Staphylococcal Infections / Q000188:drug therapy; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D001798:Blood Proteins; D010406:Penicillins