Invasive fungal infections – Page 5

Mycobiome analyses of critically ill COVID-19 patients

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This study examined fungal infections in severely ill COVID-19 patients treated in intensive care units across Europe. Researchers found that a dangerous mold called Aspergillus fumigatus was more common in patients who died and less common in those treated with azole antifungal drugs. The findings suggest that giving antifungal medications to critically ill COVID-19 patients when they arrive at the hospital might help prevent fungal-related deaths.

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

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Researchers discovered that a common agricultural fungicide can cause fungal cells to change their genetic structure in ways that make them resistant to medicines used to treat human infections. The fungus Candida tropicalis can switch to a haploid state (single copy of genes instead of two) when exposed to this agricultural chemical, and these altered cells become resistant to both agricultural and medical antifungal drugs. This explains how resistance that develops in agricultural settings can spread to clinical settings, creating a public health threat.

Data analysis of patients with positive mould or dimorphic fungal cultures from sterile sites

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This study examined 48 patients with serious mould and fungal infections at a South African hospital between 2014-2017. Most infections occurred in people with weak immune systems, especially those with HIV. The most common fungal type was Aspergillus. Even with appropriate antifungal medicines, one-quarter of patients died, highlighting how serious these infections can be.

Aspergillus terreus IFM 65899-THP-1 cells interaction triggers production of the natural product butyrolactone Ia, an immune suppressive compound

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Scientists discovered that when a dangerous fungus called Aspergillus terreus is grown together with immune cells, it produces a special compound called butyrolactone Ia that helps it hide from the body’s defense system. This compound works by reducing inflammatory signals that immune cells use to fight the fungus. The research shows that direct contact between the fungus and immune cells is needed to trigger this protective compound production, suggesting the fungus responds directly to the threat of immune attack.

Design of a melting curve analysis (MCA) based on multiplex real-time PCR for detection of Aspergillus terreus and Aspergillus fumigatus in cereals and oilseeds samples

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This study developed a fast molecular test using real-time PCR to detect harmful Aspergillus fungi in grains and seeds. Instead of waiting 3-5 days for traditional culture methods, this new test can identify the fungi in just hours by detecting specific DNA patterns. The test was tested on 140 samples of cereals and oilseeds and proved more accurate than traditional methods, making it useful for food safety in markets and processing plants.

Improving the production of micafungin precursor FR901379 in Coleophoma empetri using heavy-ion irradiation and its mechanism analysis

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Scientists successfully improved the production of a key ingredient for the antifungal drug micafungin by using heavy-ion radiation to create improved strains of a fungus called Coleophoma empetri. The best mutant strain produced over 250% more of the desired compound than the original strain. By analyzing the genetic changes in these improved strains, researchers identified specific genes related to fungal structure and metabolism that contribute to higher production, providing insights for future improvements to the manufacturing process.

Antifungal Policy and Practice Across Five Countries: A Qualitative Review

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This study examines how well five different countries handle invasive fungal infections through their healthcare policies and systems. Researchers found that while these infections affect millions of people globally, most countries lack comprehensive policies to diagnose, treat, and manage them effectively. Major issues include inadequate healthcare provider training, limited access to rapid diagnostic tests, and insufficient antifungal medications in some regions. The study recommends that countries develop better national strategies for preventing, diagnosing, and treating these serious infections.

Immunomodulatory functions of fungal melanins in respiratory infections

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Some dangerous fungi produce a dark pigment called melanin that acts like a cloak, protecting them from the body’s immune system. This review explains how melanin blocks multiple immune defenses, including suppressing warning signals to immune cells, preventing immune cells from engulfing and killing the fungi, and even absorbing harmful reactive molecules. Understanding these sneaky tactics could help scientists develop new treatments that strip away this protective cloak, making the fungi vulnerable to both the body’s natural defenses and antifungal drugs.

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

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Agricultural fungicides can cause fungal pathogens like Candida tropicalis to change their genetic structure and become resistant to clinical antifungal drugs. When exposed to agricultural azole fungicides, these fungi can shift from their normal two-copy genetic state to a one-copy state, making them harder to treat with hospital medicines. This study reveals how the same drugs used on farms can create dangerous drug-resistant fungi that threaten human health.

Insight into the Skin Mycobiota of Myotis myotis: How Age, Sex, and Biometric Traits Correlate with Fungal Diversity

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Researchers studied fungal colonies living on the skin of Greater mouse-eared bats in autumn, discovering 39 different fungal species. Wing membranes had more fungal diversity than tail membranes, with males carrying more fungi than females. Interestingly, older male bats accumulated more fungal species, while older female bats showed less fungal diversity. The study found no trace of the fungus that causes white-nose syndrome, suggesting caves rather than bats may be the main source of this disease.

Disease: Invasive fungal infections