Cryptococcus neoformans

The emerging fungal pathogen Cryptococcus gattii: Epidemiology, pathogenesis, immunomodulatory attributes, and drug susceptibility

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Cryptococcus gattii is a dangerous fungal infection that can affect even healthy people, unlike most fungal infections that target those with weak immune systems. The fungus uses clever tricks to hide from the immune system, including creating protective capsules and producing melanin. Current antifungal drugs like fluconazole are becoming less effective as the fungus develops resistance, making this an urgent public health concern that requires better treatments and early detection.

Prevalence and antifungal susceptibility profiles of Candida isolates among patients with candiduria: a multiplex PCR assay

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Researchers studied urinary tract infections caused by yeast (Candida species) in hospitalized patients. Using advanced molecular testing, they found that while the common yeast Candida albicans was most prevalent, other yeast species were increasingly showing resistance to antifungal medications, particularly to fluconazole. The study highlights the importance of identifying which specific yeast species is causing an infection to choose the most effective treatment.

Fungal β-Glucans: Biological Properties, Immunomodulatory Effects, Diagnostic and Therapeutic Applications

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β-glucans are beneficial compounds found in fungi and some plants that help your body in multiple ways. They boost your immune system, lower cholesterol and blood sugar, protect against oxidative stress, and may help fight cancer and infections. Recent research shows they could be useful as diagnostic markers for fungal infections and as vaccine boosters, especially for diseases like COVID-19.

Is Cryptococcus neoformans a pleomorphic fungus?

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Researchers have discovered that Cryptococcus neoformans, a dangerous fungus that causes serious infections, is actually much more shape-shifting than previously thought. Instead of existing as just one simple budding yeast form, the fungus can transform into several different cell types including large ‘titan cells’ and small ‘seed cells,’ each with different characteristics that help it survive and spread in the body. These different forms have distinct genetic programs and can evade the immune system in different ways, making the infection harder to treat. This discovery fundamentally changes how scientists understand this pathogen and could lead to new treatment strategies.

Cryptococcus: Emerging host risk factors for infection

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This scientific review examines why some people without HIV are getting serious Cryptococcus infections and becoming very sick. Researchers found that people with liver problems, kidney disease, diabetes, cancer, and autoimmune diseases face much higher risk. The review also identifies new drugs and therapies that can surprisingly increase infection risk, highlighting the importance of understanding individual patient factors when treating these dangerous fungal infections.

Clinical spectrum, immune status, and prognostic factors of cryptococcosis: insights from a large, multi-center, ambispective cohort study in southeastern China

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This study examined cryptococcosis, a serious fungal infection, in 396 non-HIV patients across hospitals in southeastern China. The researchers found that patients’ immune status, whether the infection spread to the brain, and blood inflammation markers were key predictors of survival. Most patients treated with azole medications (a common antifungal) improved or recovered, though those with brain involvement or severe immune deficiency had worse outcomes. The findings help doctors identify which patients need more intensive treatment.

Radiation protection and structural stability of fungal melanin polylactic acid biocomposites in low Earth orbit

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Scientists tested special materials made with fungal melanin and plastic in space to see if they could protect against radiation. After 6 months on the International Space Station, materials containing fungal melanin showed better resistance to damage than regular plastic. These bio-based materials could help protect astronauts and equipment during long space missions while being more sustainable than traditional synthetic materials.

Mediastinal cryptococcoma as part of disseminated cryptococcosis in HIV-negative pregnant woman with Myasthenia Gravis: Autopsy case report

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A 29-year-old pregnant woman with myasthenia gravis died from a widespread fungal infection caused by Cryptococcus, which formed a large mass in her chest. Although she tested negative for HIV, her use of immunosuppressive medications to treat her muscle disease, combined with pregnancy’s natural effects on immune function, made her vulnerable to this serious fungal infection. The infection was initially misdiagnosed as tuberculosis, and the diagnosis was only confirmed after her death during autopsy, highlighting the importance of testing for fungal infections even in patients without HIV.

Cell walls of filamentous fungi – challenges and opportunities for biotechnology

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Filamentous fungi like Aspergillus and Trichoderma are workhorses of the biotechnology industry, producing enzymes and pharmaceuticals worth billions annually. The cell wall surrounding these fungal cells acts as both a barrier and a filter, affecting how well proteins can be secreted into the fermentation medium. By genetically modifying cell wall components, scientists can improve enzyme production efficiency. Additionally, the billions of tons of fungal biomass left over from fermentation contain valuable chitin and chitosan that could be extracted and reused, creating a more sustainable manufacturing process.

Identification of two metallothioneins in Agaricus crocodilinus reveals gene duplication and domain expansion, a pattern conserved across fungal species

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A common edible mushroom called A. crocodilinus can accumulate dangerous levels of cadmium from soil without being harmed. Scientists discovered this mushroom produces two different proteins called metallothioneins that work together to safely trap and store the toxic cadmium. One protein handles constant, everyday cadmium storage in the mushroom fruiting body, while the other activates quickly when the roots encounter sudden heavy metal stress. This same protective strategy appears in other mushroom species, showing it’s an important evolutionary adaptation.

Fungal Species: Cryptococcus neoformans