title: [Sensitivity of Mycobacterium tuberculosis to levofloxacin].
abstract: Susceptibility of 92 strains of mycobacteria to levofloxacin (5, 10 and 50 mcg/mL) was investigated by indirect method of absolute concentrations on Levenstain-Jensen media. The investigation was performed on 85 strains of Mycobacterium tuberculosis isolated from 83 patients with different types of tuberculosis and also on drug-sensitive laboratory strains of M. tuberculosis H37Rv-M, H37Rv-GISK, Academia, M. bovis-bovinus 8, M. bovis BCG and on two strains of M. fortuitum with total resistance to antimycobacterial agents. 87.8 per cent of clinical isolates were multi-drug resistant. From one patient treated with ciprofloxacin two strains of M. tuberculosis were isolated--one resistant to 5 mcg/mL of levofloxacin and second strain-resistant to 10 mcg/mL of levofloxacin. All other clinical and laboratory strains of mycobacteria (97.8 per cent) were susceptible to all three concentrations of levofloxacin.
authors.affiliation: Research Institute of Phtisiopulmonology, Ministry of Health of Russian Federation, St-Petersburg.
authors.forename: B I
authors.initials: BI
authors.lastname: Vishnevskiĭ
authors.forename: E A
authors.initials: EA
authors.lastname: Istomin
authors.forename: E N
authors.initials: EN
authors.lastname: Miakotina
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D001431:Bacteriological Techniques; D004305:Dose-Response Relationship, Drug; D024881:Drug Resistance, Bacterial; D005260:Female; D006801:Humans; D064704:Levofloxacin; D009169:Mycobacterium tuberculosis / Q000187:drug effects* / Q000302:isolation & purification; D015242:Ofloxacin / Q000494:pharmacology*
chemical_list: D000890:Anti-Infective Agents; D064704:Levofloxacin; D015242:Ofloxacin