dermatophytosis – Page 2

Emergence of resistant dermatophytosis caused by Trichophyton indotineae: First case series in Thailand

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Researchers in Thailand have identified the first cases of a new resistant fungal skin infection caused by Trichophyton indotineae. This fungus is resistant to a commonly used antifungal drug called terbinafine and causes persistent skin rashes on various body parts. The study describes five patients whose infections were finally identified through genetic testing and who responded well to alternative antifungal treatment with itraconazole. This discovery suggests the fungus is now spreading in Thailand and doctors should watch for it.

Dermatophytosis in a Chilean fox: first case of Nannizzia gypsea in Lycalopex griseus and the need for a one health approach

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Researchers reported the first case of a fungal skin infection caused by Nannizzia gypsea in a wild South American grey fox found near Santiago, Chile. The fox developed crusted and scaly lesions on its tail, which were successfully treated with topical antifungal cream. This discovery highlights how increasing contact between domestic pets, wild animals, and humans due to urbanization can spread fungal infections, emphasizing the need for integrated health approaches that consider human, animal, and environmental health together.

Dermatophytosis caused by Trichophyton benhamiae in a sea lion. First report

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A 13-year-old sea lion in a marine park developed ringworm-like skin lesions caused by a fungus called Trichophyton benhamiae, marking the first time this fungus has been identified in this species. Scientists identified the fungus using DNA testing and found it was resistant to common antifungal drugs, so they treated it with a combination of oral medication (terbinafine), topical ozonized oil, and a liver-protecting supplement. After three months of treatment, the sea lion’s skin healed completely.

Northwest Iranian dermatophyte isolates: anthropophilic and geophilic

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Researchers in northwestern Iran studied fungal infections of skin, hair, and nails by identifying different types of dermatophytes from patient samples and soil. They found that a fungus called Trichophyton mentagrophytes was the most common cause, but also discovered a rare fungus called Myriodontium keratinophilum causing nail infections. Using modern DNA testing methods, they identified seven different dermatophyte species and several other soil fungi, providing important information about fungal infections in this region.

Dermatophytes adaptation to the human host exemplified by Microsporum canis

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Researchers studied how fungi that normally infect cats and dogs are adapting to infect humans. By comparing the genes of zoophilic (animal-loving) and anthropophilic (human-loving) Microsporum species, they found that human-adapted strains have developed specific proteins that help them survive in the acidic environment of human skin. These fungi have evolved special enzymes for breaking down keratin and tolerating the lipid-rich, acidic conditions of human skin better than their animal-loving relatives.

Integrating Machine Learning and Molecular Methods for Trichophyton indotineae Identification and Resistance Profiling Using MALDI-TOF Spectra

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A new type of fungus called Trichophyton indotineae is causing stubborn skin infections that don’t respond well to standard antifungal treatments. Researchers used advanced laboratory techniques combined with computer analysis to better identify this fungus from MALDI-TOF spectra, which is a quick fingerprinting method for microorganisms. The study showed that machine learning could accurately distinguish this problematic fungus from similar species and found specific markers that could help clinics detect it faster, potentially improving patient treatment outcomes.

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.

Antifungal potential of copper oxide nanoparticles against Microsporum canis isolates in canine and feline dermatophytosis

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Researchers tested tiny copper oxide particles created using plant extracts against a fungus that causes ringworm in dogs and cats. These nanoparticles successfully killed the fungus in laboratory tests, with effectiveness at concentrations ranging from 500-2,000 parts per million. While slightly less effective than current medications, the nanoparticles showed promise as an alternative treatment, especially important as the fungus becomes resistant to traditional drugs.

Epidemiological profile of dermatophytes at the parasitology-mycology laboratory at Mohammed VI University Hospital in Oujda

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This study examined fungal skin infections caused by dermatophytes in a Moroccan hospital over four years, analyzing 950 samples. The researchers found that nail infections (onychomycosis) were most common, particularly in people over 50 years old, while scalp infections mainly affected children. The fungus Trichophyton rubrum was responsible for most infections, though Microsporum canis increasingly caused scalp infections, likely due to increased pet ownership in Morocco. The study emphasizes the importance of proper laboratory testing to identify the specific fungus and choose appropriate treatment.

Research Keyword: dermatophytosis