immunocompromised conditions

Isolation and identification of Fusarium species from the water systems of ICUs and transplant wards of hospitals and determination of the in vitro susceptibilities of isolates to conventional antifungals

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Researchers found dangerous Fusarium fungal species in water systems of hospital ICU wards in Tehran, Iran. These fungi can spread through water fixtures and pose serious risks to patients with weak immune systems. Testing showed that certain antifungal drugs like posaconazole and voriconazole worked well against these fungi, but other drugs were less effective. The study emphasizes the importance of better water management and safety measures in hospitals to protect vulnerable patients.

Protein kinase A signaling regulates immune evasion by shaving and concealing fungal β-1,3-glucan

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Candida albicans, a common fungal pathogen, uses a clever strategy to hide from the immune system by masking a molecule on its surface that would normally trigger an immune response. Researchers used both computer modeling and laboratory experiments to show that this hiding strategy involves two main processes: the fungus grows and exposes the molecule, while simultaneously using enzymes to shave it away. They found that a cellular signaling pathway called PKA is essential for activating these shaving enzymes in response to lactate, a signal from the host environment.

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.

PTP1B deficiency in myeloid cells increases susceptibility to Candida albicans systemic infection by modulating antifungal immunity

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This research shows that a protein called PTP1B plays an important role in protecting the body against dangerous fungal infections caused by Candida albicans. When mice lacked this protein in their immune cells, they were much more susceptible to the infection and showed severe illness. The study found that PTP1B helps immune cells like macrophages and neutrophils fight the fungus effectively, and blocking this protein could actually make fungal infections worse.

Disease: immunocompromised conditions

Isolation and identification of Fusarium species from the water systems of ICUs and transplant wards of hospitals and determination of the in vitro susceptibilities of isolates to conventional antifungals

Protein kinase A signaling regulates immune evasion by shaving and concealing fungal β-1,3-glucan

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

PTP1B deficiency in myeloid cells increases susceptibility to Candida albicans systemic infection by modulating antifungal immunity