Oxazolidinones: activity, mode of action, and mechanism of resistance.
Oxazolidinones are a new group of antibiotics. These synthetic drugs are active against a large spectrum of Gram-positive bacteria, including methicillin- and vancomycin-resistant staphylococci, vancomycin-resistant enterococci, penicillin-resistant pneumococci and anaerobes. Oxazolidinones inhibit protein synthesis by binding at the P site at the ribosomal 50S subunit. Resistance to other protein synthesis inhibitors does not affect oxazolidinone activity, however rare development of oxazolidinone resistance cases, associated with 23S rRNA alterations during treatment have been reported. Linezolid, the first oxazolidinone available, has already taken its place in the clinic for treatment of Gram-positive infections. Pharmacokinetic properties as well as its good penetration and accumulation in the tissue including bone, lung, vegetations, haematoma and cerebrospinal fluid, allow its use for surgical infections.
Bozdogan
Bülent
B
Department of Pathology, Penn State University Hershey Medical Center, H083, 500 University Drive, PO Box 850 Hershey, PA 17033, USA.
Appelbaum
Peter C
PC
D000081:Acetamides / Q000494:pharmacology; D000890:Anti-Infective Agents / Q000494:pharmacology*; D001483:Base Sequence; D024881:Drug Resistance, Bacterial / Q000235:genetics*; D006094:Gram-Positive Bacteria / Q000187:drug effects* / Q000235:genetics; D016908:Gram-Positive Bacterial Infections / Q000382:microbiology; D006801:Humans; D000069349:Linezolid; D008969:Molecular Sequence Data; D009154:Mutation; D023303:Oxazolidinones / Q000494:pharmacology*; D010458:Peptidyl Transferases / Q000235:genetics; D012338:RNA, Ribosomal, 23S / Q000235:genetics
D000081:Acetamides; D000890:Anti-Infective Agents; D023303:Oxazolidinones; D012338:RNA, Ribosomal, 23S; D010458:Peptidyl Transferases; D000069349:Linezolid