Research Topic: dermatophytes

Addressing filamentous fungi-related onychomycosis in the era of antifungal resistance: assessment of Zataria multiflora nanostructured lipid carrier topical gel in a double-blinded clinical trial

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Nail fungal infections (onychomycosis) are difficult to treat, especially as fungi become resistant to standard antifungal medications. Researchers tested a new gel made from Zataria multiflora (Shirazi thyme) packaged in special nanoparticles that help the medicine penetrate the nail better. In a clinical trial comparing this gel to placebo, the Zataria multiflora treatment showed better results after just 2 weeks, with 70% of patients experiencing fungal cure compared to 55% with placebo.

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Computational analysis of missense mutations in squalene epoxidase associated with terbinafine resistance in clinically reported dermatophytes

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Certain fungal skin infections are becoming resistant to terbinafine, a common antifungal medication, due to genetic mutations in an enzyme called squalene epoxidase. Using computer models and analysis tools, researchers identified which mutations most strongly reduce the drug’s effectiveness and where the protein changes occur. Four specific mutations were found to prevent terbinafine from binding to its target, offering insights that could help develop better antifungal treatments.

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Comparative gene expression analysis in closely related dermatophytes reveals secondary metabolism as a candidate driver of virulence

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A strain of fungal skin pathogen (Trichophyton benhamiae var. luteum) is spreading rapidly among guinea pigs and people in Europe, but scientists didn’t understand why it was more contagious than closely related strains. Researchers compared gene activity in four related fungal species and found that the epidemic strain produces higher levels of toxic compounds called secondary metabolites. These compounds help the fungus escape the body’s immune system and cause infection more effectively than in less dangerous relatives.

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Utility of MALDI-ToF MS for Recognition and Antifungal Susceptibility of Nannizzia, an Underestimated Group of Dermatophytes

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Nannizzia species are soil-dwelling fungi that increasingly cause stubborn skin, nail, and hair infections in humans and animals. This study tested two laboratory methods for identifying these fungi and measured their sensitivity to eight antifungal drugs. The faster liquid-based method was slightly more accurate (67%) than the traditional culture method (62%), though neither method could identify six very rare species. Terbinafine emerged as the most effective antifungal treatment in laboratory tests.

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Genome characterization of Trichophyton mentagrophytes genotype VII strain PG12DES from Italy

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Researchers in Italy studied a fungal strain that causes skin infections, particularly ringworm and related conditions. This strain is spreading globally and can potentially be transmitted through sexual contact. The study found that the Italian strain is closely related to another strain found in Moldova and is susceptible to currently used antifungal medications. Understanding this fungus at the genetic level helps doctors monitor its spread and identify if it develops resistance to treatments.

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