Effects of Caspofungin against Candida guilliermondii and Candida parapsilosis
Open accessAbstract
The in vitro activity of caspofungin (CAS) was investigated against 28 yeast isolates belonging to Candida albicans ( n = 5), Candida guilliermondii ( n = 10), and Candida parapsilosis ( n = 13). CAS MICs obtained by broth dilution and Etest methods clearly showed a rank order of susceptibility to the echinocandin compound with C. albicans > C. parapsilosis > C. guilliermondii . Similarly, time-kill assays performed on selected isolates showed that CAS was fungistatic against C. albicans and C. parapsilosis , while it did not exert any activity against C. guilliermondii . In a murine model of systemic candidiasis, CAS given at doses as low as 1 mg/kg of body weight/day was effective at reducing the kidney burden of mice infected with either C. albicans or C. guilliermondii isolates. Depending on the isolate tested, mice infected with C. parapsilosis responded to CAS given at 1 and/or 5 mg/kg/day. However, the overall CFU reduction for C. guilliermondii and C. parapsilosis was approximately 100-fold less than that for C. albicans . Our study shows that CAS was active in experimental systemic candidiasis due to C. guilliermondii and C. parapsilosis , but this activity required relatively high drug dosages.
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Intrinsic FKS mutations result in elevated MIC levels but lower level of reduced β-1,3-d-glucan synthase sensitivity compared with acquired FKS mutations.
“intrinsic FKS mutations, also resulting in elevated MIC levels (but in a lower level of reduced β-1,3-d-glucan synthase sensitivity when compared with the acquired FKS mutations) [118,120,121].”
From Candida glabrata Biofilms: How Far Have We Come? (2017) · cites this paper as [120]
Application of Etest agar-based technology to determine amphotericin B MICs in a broad antifungal surveillance program has identified specific differences in the susceptibilities of the various species of Candida to amphotericin B.
“Application of the Etest agar-based technology to determine amphotericin B MICs in the context of a broad antifungal surveillance program has identified specific differences in the susceptibilities of the various species of Candida to this former 'gold standard' antifungal agent (Table 10) (20, 92, 113, 136, 202, 207, 212, 215, 323).”
From Epidemiology of Invasive Candidiasis: a Persistent Public Health Problem (2007) · cites this paper as [20]
Blignaut and colleagues reported that among the five distinct DNA clades of C. albicans, the South African clade contained a significantly higher proportion of amphotericin B-resistant (MIC ≥2 μg/ml) isolates (16% of 179 isolates) than did the other four clades (5.4% of 167 isolates).
“Recently, Blignaut and colleagues (20) reported that among the five distinct DNA clades of C. albicans , the South African clade (clade SA) contained a significantly higher proportion of amphotericin B-resistant (MIC ≥ 2 𝛍 g/ ml) isolates (16% of 179 isolates) than did the other four clades (5.4% of 167 isolates).”
From Epidemiology of Invasive Candidiasis: a Persistent Public Health Problem (2007) · cites this paper as [20]
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- Authors
- Barchiesi, F., Spreghini, E., Tomassetti, S., Della Vittoria, A., Arzeni, D., Manso, E., & Scalise, G.
- Affiliations
- Marche Polytechnic University (IT)
- Istituto di Malattie Infettive e Medicina Pubblica, Università Politecnica delle Marche
- Azienda Ospedaliero-Universitaria delle Marche (IT)
- Corresponding author
- Barchiesi, Francesco
- ORCID
- Barchiesi, Francesco
- Venue
- Antimicrobial Agents and Chemotherapy
- Publisher
- American Society for Microbiology
- Published
- 2006-08
- Volume
- 50
- Issue
- 8
- Pages
- 2719-2727
- ISSN
- 0066-4804 (ISSN-L)
- 1098-6596
- OpenAlex
- W2136899085
- Cited by
- 98
- References
- 24
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 4 · 2018: 3 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 10 · 2013: 4 · 2012: 7
- FWCI
- 5.58
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Antimicrobial Agents and Chemotherapy (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed (publishedVersion)
- Università Politecnica delle Marche (Università Politecnica delle Marche) (submittedVersion)
- Topics
- Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
- Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Yeasts and Rust Fungi Studies
- Keywords
- caspofungin, echinocandins, Candida guilliermondii, Candida parapsilosis, Candida albicans, systemic candidiasis, antifungal susceptibility, fungistatic activity, time-kill kinetics, mouse model, kidney fungal burden, minimum inhibitory concentration
- MeSH terms
- Caspofungin, Animals, Antifungal Agents, Candida, Candida albicans, Candidiasis, Dose-Response Relationship, Drug, Humans, Injections, Intravenous, Male, Mice, Inbred Strains, Microbial Sensitivity Tests, Peptides, Cyclic, Species Specificity, Time Factors, Colony Count, Microbial, Mice, Echinocandins, Lipopeptides, In Vitro Techniques
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