title: Antibacterial activity of netilmicin, a new aminoglycoside antibiotic, compared with that of gentamicin.
abstract: The antibacterial activity of netilmicin (Sch 20569), a new semisynthetic aminoglycoside, was compared with that of gentamicin against a variety of gram-negative bacteria, staphylococci, and streptococci. Both antibiotics had similar activity against most organisms, but netilmicin had appreciably greater activity against gram-negative organisms that were resistant to gentamicin because these species synthesized aminoglycoside 3-N-acetyltransferase I or aminoglycoside 2''-O-nucleotidyltransferase. Netilmicin was also more active than gentamicin against gentamicin-resistant strains of Staphylococcus aureus that produced two enzymes-aminoglycoside-2''-O-phosphotransferase and aminoglycoside-6'-N-acetyltransferase.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001407:Bacillus / Q000187:drug effects; D001419:Bacteria / Q000187:drug effects* / Q000201:enzymology; D004755:Enterobacteriaceae / Q000187:drug effects; D005839:Gentamicins / Q000494:pharmacology*; D006088:Gram-Negative Aerobic Bacteria / Q000187:drug effects; D006193:Haemophilus influenzae / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D012853:Sisomicin / Q000031:analogs & derivatives / Q000378:metabolism / Q000494:pharmacology*; D013210:Staphylococcus / Q000187:drug effects; D013291:Streptococcus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D005839:Gentamicins; D012853:Sisomicin