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Activities of caspofungin, itraconazole, posaconazole, ravuconazole, voriconazole, and amphotericin B against 448 recent clinical isolates of filamentous fungi
Journal article   Open access   Peer reviewed

Activities of caspofungin, itraconazole, posaconazole, ravuconazole, voriconazole, and amphotericin B against 448 recent clinical isolates of filamentous fungi

D J Diekema, S A Messer, R J Hollis, R N Jones and M A Pfaller
Journal of clinical microbiology, Vol.41(8), pp.3623-3626
08/2003
DOI: 10.1128/JCM.41.8.3623-3626.2003
PMCID: PMC179829
PMID: 12904365
url
https://doi.org/10.1128/JCM.41.8.3623-3626.2003View
Published (Version of record) Open Access

Abstract

We examined the in vitro activity of caspofungin, posaconazole, voriconazole, ravuconazole, itraconazole, and amphotericin B against 448 recent clinical mold isolates. The endpoint for reading caspofungin was the minimum effective concentration (MEC). Among the triazoles, posaconazole was most active, inhibiting 95% of isolates at <or=1 microg/ml, followed by ravuconazole (91%), voriconazole (90%), and itraconazole (79%). Caspofungin and amphotericin B inhibited 93% and 89% of isolates at <or=1 microg/ml, respectively, with caspofungin demonstrating an MEC 90 of 0.12 microg/ml. All three new triazoles and caspofungin inhibited >95% of Aspergillus spp. at <or=1 microg/ml compared to 83% for itraconazole and 91% for amphotericin B. Amphotericin B inhibited only 38% of Aspergillus terreus isolates at <or=1 microg/ml, whereas the three new triazoles and caspofungin inhibited all A. terreus at <or=0.5 microg/ml. The new triazoles and caspofungin have excellent in vitro activity against a very large collection of recent clinical isolates of Aspergillus spp., and some in vitro activity against selected other filamentous fungi.
Fungi - drug effects Peptides Humans Amphotericin B - pharmacology Fungi - isolation & purification Mycoses Penicillium - drug effects Pyrimidines - pharmacology Itraconazole - pharmacology Aspergillus - drug effects Peptides, Cyclic Triazoles - pharmacology Caspofungin Voriconazole Echinocandins Anti-Bacterial Agents - pharmacology Thiazoles - pharmacology Lipopeptides Microbial Sensitivity Tests - methods

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