Comparison of in vitro Activities of Tigecycline with Other Antimicrobial Agents against Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis in Two University Hospitals in Istanbul, Turkey

Gonullu N., Catal F., Kucukbasmaci Ö., Özdemir Göçeri S., Torun M. M., Berkiten R.

CHEMOTHERAPY, cilt.55, sa.3, ss.161-167, 2009 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 3
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1159/000214144
  • Dergi Adı: CHEMOTHERAPY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.161-167
  • Anahtar Kelimeler: Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Tigecycline, Antibiotic resistance, ACQUIRED RESPIRATORY-TRACT, RESISTANCE, INFECTIONS, SUSCEPTIBILITY, TELITHROMYCIN, SURVEILLANCE, MULTICENTER, PATHOGENS, MACROLIDE, COUNTRIES
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

Background: We compared the in vitro activities of tigecycline with those of other agents against 97 Streptococcus pneumoniae, 140 Haemophilus influenzae and 54 Moraxella catarrhalis strains isolated in two large university hospitals in Istanbul. Methods: For analysis, the agar dilution method was used. Results: For S. pneumoniae isolates, 32% were not susceptible to penicillin (28.9% intermediate and 3.1% resistant). Cefotaxime, telithromycin, moxifloxacin and linezolid were fully active. Tigecycline had a 90% minimum inhibitory concentration (MIC(90)) of 0.12 mu g/ml. For H. influenzae, 8.57% were not susceptible to ampicillin, among which 8 possessed beta-lactamase (5.7%). Four (2.87%) H. influenzae isolates with beta-lactamase- negative and ampicillin-resistant phenotype were found. All isolates were susceptible to ceftriaxone, azithromycin, ciprofloxacin, levofloxacin and moxifloxacin. MIC(90) for tigecycline was 0.5 mu g/ml. Of 54 M. catarrhalis isolates, 88.9% possessed beta-lactamase. Tigecycline and fluoroquinolones were highly active (MIC(90) <= 0.12 mu g/ml). Conclusions: Linezolid, telithromycin, newer fluoroquinolones and tigecycline all have excellent in vitro activities against the 3 respiratory pathogens. Copyright (C) 2009 S. Karger AG, Basel