clinical mycology – mycolab.ai

Ploidy plasticity drives fungal resistance to azoles used in agriculture and clinics

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Agricultural fungicides called azoles can cause fungi to change their genetic makeup in ways that make them resistant to medical antifungal drugs. Researchers found that when Candida tropicalis (a fungal pathogen) is exposed to tebuconazole, an agricultural fungicide, it can transform into a haploid form (with half the normal chromosomes) that is resistant to both agricultural and clinical azoles. This discovery helps explain why fungal infections are becoming harder to treat in hospitals.

Assessing the Validity and Impact of Remote Digital Image Reading in Fungal Diagnostics

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This study tested whether trained mycologists could accurately identify fungal infections from digital images viewed remotely, similar to how radiologists review X-rays. Five experienced laboratory professionals analyzed 474 images of different fungi with accuracy rates between 78-93%. The results suggest that remote digital diagnosis could help hospitals in developing countries where expert mycologists are scarce, enabling faster and more accurate diagnosis of serious fungal infections.

A case report of disseminated histoplasmosis not responding to primary treatment by itraconazole

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A 28-year-old woman developed a fungal infection called histoplasmosis after having a tooth extracted, with the infection spreading to her lungs and sinuses. She was initially given a common antifungal medication called itraconazole, but her condition continued to worsen despite increasing the dose. When doctors switched her to a stronger medication called liposomal amphotericin B given intravenously, she improved dramatically and recovered fully. This case shows the importance of recognizing when a standard fungal treatment is not working and switching to more aggressive therapy.

Candida vulturna, the Next Fungal Menace? A Narrative Review

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Candida vulturna is a newly discovered yeast that causes serious blood infections, particularly in vulnerable patients like premature infants and those with cancer. Though still rare, cases are increasingly appearing in tropical regions with documented hospital outbreaks. While the infection has a better survival rate than related species, it resists several common antifungal drugs, making treatment challenging and requiring careful use of remaining effective medications.

Sarocladium implicatum: an unusual agent of opportunistic infection in a COVID-19 patient

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A patient hospitalized with severe COVID-19 developed an unusual infection caused by a mold called Sarocladium implicatum, which typically affects plants. Due to weakened immune system from his illness and medications, the fungus spread to his bloodstream and lungs, causing persistent fever and a cavity in his lung. After molecular testing identified the fungus, he was treated with an antifungal medication called voriconazole, which successfully cured the infection.

Clinical aspects and recent advances in fungal diseases impacting human health

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Fungal infections are increasingly common health threats affecting over a billion people worldwide, ranging from minor allergies to serious life-threatening infections. The biggest problems are that fungi are becoming resistant to current medications, diagnosis can be difficult and slow, and treatment options are limited. Recent developments include new antifungal drugs like ibrexafungerp and rezafungin that work differently from older medications, offering hope for treating resistant infections. Better awareness among doctors and patients, faster diagnostic methods, and responsible use of antifungals are essential to combat this growing public health challenge.

Identification of Challenging Dermatophyte Species Using Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry

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This study shows how MALDI-TOF mass spectrometry, a rapid laboratory technique, can accurately identify different types of dermatophyte fungi that cause ringworm and other skin infections. By creating a customized reference library combining commercial and locally-collected fungal samples, researchers improved identification accuracy from 16% to 91%. This advancement helps doctors identify the specific fungus causing a skin infection more quickly and accurately, enabling better treatment decisions.

Spatial distribution of pathogenic fungal isolates from clinical samples in Uganda: Diagnostic gaps and trends, January 2020 – May 2024

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This study examined fungal infections detected in Uganda’s laboratories from 2020 to 2024, finding that common yeast infections called Candida were the most frequently identified. Most cases occurred in women aged 16-35 years, particularly in the cities of Kampala and Mbarara. The research reveals that Uganda’s laboratories can only identify two types of fungi and cannot test which medications work best against them, highlighting the need for better diagnostic tools and training.

Past, present and future of antifungals: Advancements in mechanisms of action and resistance

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Fungal infections are a growing global health threat, especially for people with weakened immune systems, causing millions of deaths annually. Currently available antifungal drugs are limited and increasingly face resistance, making them less effective over time. This special collection of research papers explores new approaches to treating fungal infections, including novel drugs, combination therapies, and alternative treatments to overcome resistance. Scientists and doctors hope these advances will help save more lives by providing better options for treating serious fungal diseases.

Trichophyton indotineae Infection, São Paulo, Brazil, 2024

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A businessman from São Paulo, Brazil contracted a difficult-to-treat fungal skin infection caused by Trichophyton indotineae, which is resistant to the common antifungal drug terbinafine. After terbinafine failed to help over 9 weeks, doctors switched him to itraconazole, which worked well after 8 weeks. Genetic testing showed his fungal strain had a specific resistance mutation and was most similar to a strain from Germany, suggesting he may have caught it while traveling in Europe.

Research Keyword: clinical mycology