title: Emergence of resistance in normal human aerobic commensal flora during telithromycin and amoxicillin-clavulanic acid treatments.
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).
authors.affiliation: Clinical Investigation Center, Bichat-Claude Bernard Hospital, Paris, France.
authors.forename: Anne-Claude
authors.initials: AC
authors.lastname: Crémieux
authors.forename: Claudette
authors.initials: C
authors.lastname: Muller-Serieys
authors.forename: Xavière
authors.initials: X
authors.lastname: Panhard
authors.forename: Frédérique
authors.initials: F
authors.lastname: Delatour
authors.forename: Marina
authors.initials: M
authors.lastname: Tchimichkian
authors.forename: France
authors.initials: F
authors.lastname: Mentre
authors.forename: Antoine
authors.initials: A
authors.lastname: Andremont
mesh_terms: D000328:Adult; D019980:Amoxicillin-Potassium Clavulanate Combination / Q000009:adverse effects / Q000494:pharmacology*; D000900:Anti-Bacterial Agents / Q000009:adverse effects / Q000494:pharmacology*; D001420:Bacteria, Aerobic / Q000254:growth & development* / Q000378:metabolism; D015169:Colony Count, Microbial; D024881:Drug Resistance, Bacterial; D004359:Drug Therapy, Combination / Q000009:adverse effects / Q000494:pharmacology*; D005243:Feces / Q000382:microbiology; D006801:Humans; D048628:Ketolides; D018942:Macrolides; D008297:Male; D009960:Oropharynx / Q000382:microbiology; D012867:Skin / Q000382:microbiology; D015003:Yeasts / Q000254:growth & development / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D048628:Ketolides; D018942:Macrolides; D019980:Amoxicillin-Potassium Clavulanate Combination; C106791:telithromycin