Journal of fungi (Basel, Switzerland) · 2025
Superficial Candidiasis: Cluster Analysis of Species Distribution and Their Antifungal Susceptibility In Vitro.
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Ranđelović Marina, Ignjatović Aleksandra, Đorđević Milica, Golubović Maša, Stalević Marko, Rančić Nataša, Otašević Suzana
Аннотация
BACKGROUND: Superficial candidiasis (SC) is widespread in humans worldwide. This study aimed to evaluate species distribution patterns and antifungal susceptibility through cluster analysis.
METHODS: A total of 180 Candida strains isolated from skin and nail samples of 1593 examined patients with suspected superficial fungal infection were identified by Matrix-assisted laser desorption in ionization-time of flight mass spectrometry (MALDI-TOF MS; Zybio EXS2600, China). Antifungal susceptibility was assessed using the commercial Integral System YEASTS Plus test (ISYPT; Liofilchem®, Italy). Agglomerative hierarchical cluster analysis was used to analyze species distribution and susceptibility.
RESULTS: Candida parapsilosis (44.4%) and C. albicans (40%) were the most prevalent causative agents of SC. Cluster analysis established two defined clusters. Cluster 1 (121 isolates) showed a statistically significant difference compared to Cluster 2 (54 isolates) in species distribution (C. albicans was dominant in the first and C. parapsilosis in the second cluster) as well as in susceptibility to ECN (p ≤ 0.001), KCA (p = 0.030), CLO (p ≤ 0.001), MCZ (p ≤ 0.001), ITZ (p ≤ 0.001), and FLU (p ≤ 0.006).
CONCLUSION: The fact that one-third of isolates exhibited low sensitivity to antifungals highlights the need for a new approach in SC treatment, emphasizing the importance of mycological analyses, including in vitro testing of antifungal effectiveness.
METHODS: A total of 180 Candida strains isolated from skin and nail samples of 1593 examined patients with suspected superficial fungal infection were identified by Matrix-assisted laser desorption in ionization-time of flight mass spectrometry (MALDI-TOF MS; Zybio EXS2600, China). Antifungal susceptibility was assessed using the commercial Integral System YEASTS Plus test (ISYPT; Liofilchem®, Italy). Agglomerative hierarchical cluster analysis was used to analyze species distribution and susceptibility.
RESULTS: Candida parapsilosis (44.4%) and C. albicans (40%) were the most prevalent causative agents of SC. Cluster analysis established two defined clusters. Cluster 1 (121 isolates) showed a statistically significant difference compared to Cluster 2 (54 isolates) in species distribution (C. albicans was dominant in the first and C. parapsilosis in the second cluster) as well as in susceptibility to ECN (p ≤ 0.001), KCA (p = 0.030), CLO (p ≤ 0.001), MCZ (p ≤ 0.001), ITZ (p ≤ 0.001), and FLU (p ≤ 0.006).
CONCLUSION: The fact that one-third of isolates exhibited low sensitivity to antifungals highlights the need for a new approach in SC treatment, emphasizing the importance of mycological analyses, including in vitro testing of antifungal effectiveness.