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Lo Cascio G, Bazaj A, Trovato L, Sanna S, Andreoni S, Blasi E, Conte M, Fazii P, Oliva E, Lepera V, Lombardi G, Farina C. Multicenter Italian Study on "In Vitro Activities" of Isavuconazole, Voriconazole, Amphotericin B, and Caspofungin for Aspergillus Species: Comparison between Sensititre TM YeastOne TM and MIC Test Strip. Infect Drug Resist 2022; 15:5839-5848. [PMID: 36217342 PMCID: PMC9547591 DOI: 10.2147/idr.s367082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 09/16/2022] [Indexed: 11/05/2022] Open
Abstract
In this study the activity of Isavuconazole, Voriconazole, Amphotericin B, and Caspofungin against 224 clinical isolates of Aspergillus spp. originating from seven Italian hospitals, was comparatively evaluated with two commercial antifungal susceptibility tests (AST): SensititreTM YeastOneTM (SYO) and MIC Test Strip. More attention was focused on Isavuconazole activity, given the new introduction of the drug in widely distributed antifungal susceptibilities methods in the clinical microbiology lab. The minimum inhibitory concentrations of antifungal drug that can inhibit the growth of pathogen by 90% (MIC90) for Isavuconazole detected by SYO were 0.5, 1, 0.25, and 2 µg/mL for Aspergillus fumigatus, Aspergillus flavus, Aspergillus terreus, and Aspergillus niger, respectively, whilst they were 0.25, 0.25, 0.5, and 0.75 µg/mL by MIC Test Strip. Essential agreement between the two tested methods for Isavuconazole is 70% for all the species tested, 75.7% for A. fumigatus, 45.2% for A. flavus, 90.6% for A. terreus, and 40% for A. niger. Although the tested strains do not express any phenotypic resistance, MIC results were quite different if tested with microdilution broth or gradient agar method. This is the first Italian multicenter report on Isavuconazole MIC obtained employing the widely used SensititreTM Yeast OneTM (SYO) and MIC Test Strip on clinical isolates of Aspergillus.
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Affiliation(s)
- Giuliana Lo Cascio
- Clinical Microbiology and Virology Unit, Azienda Ospedaliera Universitaria Integrata, Verona, Italy,Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Clinical Microbiology and Virology Unit, Azienda USL, Piacenza, Italy,Correspondence: Giuliana Lo Cascio, Email
| | - Alda Bazaj
- Clinical Microbiology and Virology Unit, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Laura Trovato
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Clinical Microbiology, Azienda Ospedaliera Universitaria- Policlinico Vittorio Emanuele, Catania, Italy
| | - Silvana Sanna
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Microbiology and Virology Unit, Azienda Ospedaliera Universitaria, Sassari, Italy
| | - Stefano Andreoni
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Microbiology and Virology Unit, Azienda Ospedaliero Universitaria Maggiore della Carità, Novara, Italy
| | - Elisabetta Blasi
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Clinical Microbiology, Azienda Ospedaliero-Universitaria, Policlinico di Modena, Modena, Italy
| | - Marco Conte
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Microbiology and Virology Unit, Grande Ospedale Metropolitano Bianchi- Melacrino- Morelli, Reggio, Calabria, Italy
| | - Paolo Fazii
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Clinical Microbiology and Virology P.O. Spirito Santo, Pescara, Italy
| | - Ester Oliva
- Clinical Microbiology and Virology Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Valentina Lepera
- Clinical Microbiology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Gianluigi Lombardi
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Clinical Microbiology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Claudio Farina
- Medical Mycology Committee, Italian Society of Clinical Microbiologist, Milan, Italy,Clinical Microbiology and Virology Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
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