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Diagn Microbiol Infect Dis. 2013 Sep;77(1):41-5. doi: 10.1016/j.diagmicrobio.2013.05.011. Epub 2013 Jun 24.

Evaluation of the correlation of caspofungin MICs and treatment outcome in murine infections by wild type strains of Candida parapsilosis.

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Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain.


We have evaluated the in vitro activity of caspofungin against 36 wild-type strains of Candida parapsilosis sensu stricto using 3 techniques: broth microdilution, disk diffusion, and the determination of minimal fungicidal concentration (MFC). The first 2 methods showed a good in vitro activity of caspofungin, but the MFCs were ≥2 dilutions above their corresponding MICs. In a murine model of disseminated infection, we evaluated the efficacy of caspofungin at 5 mg/kg against 8 strains of C. parapsilosis representing different degrees of in vitro susceptibility (0.12-1 μg/mL). All the isolates responded to treatment and (1→3)-β-D-glucan levels were reduced in all the cases; however, the study revealed differences among isolates, since caspofungin reduced the tissue burden of mice infected with isolates with MICs ≤0.5 μg/mL but was less effective against those with MICs of 1 μg/mL.


Animal models; C. parapsilosis; Caspofungin; Fungal infections

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