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Diekema, D.J. et al.

Diekema, Messer, Hollis, Jones, Pfaller,

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

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.[1]

References

Activities of caspofungin, itraconazole, posaconazole, ravuconazole, voriconazole, and amphotericin B against 448 recent clinical isolates of filamentous fungi. Diekema, D.J., Messer, S.A., Hollis, R.J., Jones, R.N., Pfaller, M.A. J. Clin. Microbiol. (2003) [Pubmed]

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