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MIC90: less than or equal to 0.06 micrograms/mL respiratory pathogens

Temafloxacin is a fluoroquinolone antibiotic.

Fluoroquinolone antibiotic is an organonitrogen heterocyclic antibiotic with a quinolone or quinolone-like moiety and have a fluorine atom attached to the central ring system.

In vitro: The in-vitro activities of temafloxacin, ciprofloxacin, and ofloxacin against gram-negative bacteria were compared. The 90% minimal inhibitory concentrations (MIC90s) of temafloxacin for respiratory pathogens were less than or equal to 0.06 micrograms/mL. Temafloxacin was also active against bacterial agents of sexually transmitted diseases, such as Neisseria gonorrhoeae and Chlamydia trachomatis [1].

In vivo: Mixed aerobic-anaerobic infection was induced by i.p. implantation of gelatin capsules containing Bacteroides fragilis, Escherichia coli, and sterile rat faeces. Temafloxacin was found to be highly active with a 90.9% cure rate in comparison with no treatment, and as active as a combination of clindamycin and gentamicin. Temafloxacin at 12 mg/dose resulted in rise to serum concentrations exceeding the MIC values of both microorganisms for at least 8 h [2].

Clinical trial: Clinical studies showed that temafloxacin has improved activity against pneumococci. Eradication rates in acute exacerbations of chronic bronchitis collated from individual studies are 98% overall and 100% in pneumococcal infections. Moreover, eradication rates in smokers and the elderly illustrate significant advantages for temafloxacin. In pneumonia, a twice-daily temafloxacin regimen has given equivalent overall results to those of amoxycillin (84.6% vs 80%) [3].

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