Emergence of resistance in normal human aerobic commensal flora during telithromycin and amoxicillin-clavulanic acid treatments

Antimicrob Agents Chemother. 2003 Jun;47(6):2030-5. doi: 10.1128/AAC.47.6.2030-2035.2003.

Abstract

Mean fecal global yeast counts increased similarly during 7 days of treatment with telithromycin (800 mg once daily) or amoxicillin-clavulanic acid (amoxiclav) (1 g of amoxicillin and 125 mg of clavulanic acid 3 times daily) in human volunteers and decreased slowly thereafter. On skin, coagulase-negative staphylococci of decreased susceptibility (DS) to telithromycin increased in the telithromycin group, whereas those with DS to methicillin increased in the amoxiclav group. A similar antibiotic-related shift towards homologous DS was observed for oral nongroupable streptococci (NGS), but in addition, the prevalence of NGS resistant to both classes of antibiotics was significantly greater in the amoxiclav group at days 8 (P < 0.01) and 45 (P < 0.015).

Publication types

  • Clinical Trial
  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Amoxicillin-Potassium Clavulanate Combination / adverse effects
  • Amoxicillin-Potassium Clavulanate Combination / pharmacology*
  • Anti-Bacterial Agents / adverse effects
  • Anti-Bacterial Agents / pharmacology*
  • Bacteria, Aerobic / growth & development*
  • Bacteria, Aerobic / metabolism
  • Colony Count, Microbial
  • Drug Resistance, Bacterial
  • Drug Therapy, Combination / adverse effects
  • Drug Therapy, Combination / pharmacology*
  • Feces / microbiology
  • Humans
  • Ketolides*
  • Macrolides*
  • Male
  • Oropharynx / microbiology
  • Skin / microbiology
  • Yeasts / growth & development
  • Yeasts / metabolism

Substances

  • Anti-Bacterial Agents
  • Ketolides
  • Macrolides
  • Amoxicillin-Potassium Clavulanate Combination
  • telithromycin