title: In vitro susceptibility of 545 isolates of Candida spp. to four antifungal agents.
abstract: The in vitro susceptibility to amphotericin B, fluconazole, itraconazole and ketoconazole of 545 Candida strains from patients treated at the University Hospital of the Canaries was determined by means of a microdilution test. The distribution of the species was as follows: Candida albicans (342), Candida tropicalis (70), Candida glabrata (68), Candida parapsilosis (65). Of Candida albicans isolates, 8.5% and 7.6% showed resistance to itraconazole and fluconazole respectively. Of C. tropicalis isolates 34.3%, 27.1% and 2.9% were resistant to itraconazole, fluconazole and ketaconazole respectively. For C. glabrata, 10.3% and 4.4% of the isolates under study demonstrated resistance to fluconazole and itraconazole respectively. Only 4.6% and 1.5% of C. parapsilosis isolates demonstrated resistance to fluconazole and itraconazole respectively. C. tropicalis was the most resistant strain and C. parapsilosis the most sensitive. The greatest percentages of resistance in vitro were seen with the triazoles.
authors.affiliation: Cátedra de Medicine Preventiva y Salud Pública, Universidad de La Laguna, Tenerife, Islas Canarias, España.
authors.forename: A
authors.initials: A
authors.lastname: Arias
authors.forename: M P
authors.initials: MP
authors.lastname: Arévalo
authors.forename: A
authors.initials: A
authors.lastname: Andreu
authors.forename: C
authors.initials: C
authors.lastname: Rodríguez
authors.forename: A
authors.initials: A
authors.lastname: Sierra
mesh_terms: D000666:Amphotericin B / Q000494:pharmacology; D000935:Antifungal Agents / Q000494:pharmacology*; D002175:Candida / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification; D002176:Candida albicans / Q000187:drug effects / Q000302:isolation & purification; D004352:Drug Resistance, Microbial; D015725:Fluconazole / Q000494:pharmacology; D006801:Humans; D066298:In Vitro Techniques; D017964:Itraconazole / Q000494:pharmacology; D007654:Ketoconazole / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D013045:Species Specificity
chemical_list: D000935:Antifungal Agents; D017964:Itraconazole; D000666:Amphotericin B; D015725:Fluconazole; D007654:Ketoconazole