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In-vitro activity of clinafloxacin, trovafloxacin, and ciprofloxacin. 1997

M A Cohen, and M D Huband, and J W Gage, and S L Yoder, and G E Roland, and S J Gracheck
Therapeutics Department, Parke-Davis Pharmaceutical Research, Division of Warner Lambert Company, Ann Arbor, MI 48105-2495, USA.

Clinafloxacin and trovafloxacin are two new fluoroquinolones for which few comparative data are available. When MICs of ciprofloxacin against Gram-positive and Gram-negative nosocomial species were compared, clinafloxacin was the most potent although trovafloxacin was also more active than ciprofloxacin against Staphylococcus aureus and enterococci. All three drugs were bactericidal. Clinafloxacin displayed the lowest frequency of resistance, approximating 10(-11). Development of resistance studies over 13-14 passages in the presence of drug revealed a 32-fold increase in MIC of clinafloxacin against S. aureus compared with 512- and 1024-fold for trovafloxacin and ciprofloxacin respectively, although the three drugs were comparable against Enterococcus faecalis and the Gram-negative bacilli.

UI MeSH Term Description Entries
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D009287 Naphthyridines A group of two-ring heterocyclic compounds consisting of a NAPHTHALENES double ring in which two carbon atoms, one per each ring, are replaced with nitrogens.
D002939 Ciprofloxacin A broad-spectrum antimicrobial carboxyfluoroquinoline. Bay-09867,Ciprinol,Cipro,Ciprofloxacin Hydrochloride,Ciprofloxacin Hydrochloride Anhydrous,Ciprofloxacin Monohydrochloride Monohydrate,Anhydrous, Ciprofloxacin Hydrochloride,Bay 09867,Bay09867,Hydrochloride Anhydrous, Ciprofloxacin,Hydrochloride, Ciprofloxacin,Monohydrate, Ciprofloxacin Monohydrochloride,Monohydrochloride Monohydrate, Ciprofloxacin
D004352 Drug Resistance, Microbial The ability of microorganisms, especially bacteria, to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS). Antibiotic Resistance,Antibiotic Resistance, Microbial,Antimicrobial Resistance, Drug,Antimicrobial Drug Resistance,Antimicrobial Drug Resistances,Antimicrobial Resistances, Drug,Drug Antimicrobial Resistance,Drug Antimicrobial Resistances,Drug Resistances, Microbial,Resistance, Antibiotic,Resistance, Drug Antimicrobial,Resistances, Drug Antimicrobial
D006090 Gram-Negative Bacteria Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method. Gram Negative Bacteria
D006094 Gram-Positive Bacteria Bacteria which retain the crystal violet stain when treated by Gram's method. Gram Positive Bacteria
D000890 Anti-Infective Agents Substances that prevent infectious agents or organisms from spreading or kill infectious agents in order to prevent the spread of infection. Anti-Infective Agent,Anti-Microbial Agent,Antimicrobial Agent,Microbicide,Microbicides,Anti-Microbial Agents,Antiinfective Agents,Antimicrobial Agents,Agent, Anti-Infective,Agent, Anti-Microbial,Agent, Antimicrobial,Agents, Anti-Infective,Agents, Anti-Microbial,Agents, Antiinfective,Agents, Antimicrobial,Anti Infective Agent,Anti Infective Agents,Anti Microbial Agent,Anti Microbial Agents
D015363 Quinolones A group of derivatives of naphthyridine carboxylic acid, quinoline carboxylic acid, or NALIDIXIC ACID. Ketoquinoline,Ketoquinolines,Oxoquinoline,Oxoquinolines,Quinolinone,Quinolinones,Quinolone
D024841 Fluoroquinolones A group of QUINOLONES with at least one fluorine atom and a piperazinyl group. Fluoroquinolone

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