Medicinal – Page 126

Polymerase Chain Reaction on Respiratory Tract Specimens of Immunocompromised Patients to Diagnose Pneumocystis Pneumonia: A Systematic Review and Meta-analysis

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This study analyzed how well PCR tests detect Pneumocystis pneumonia, a serious fungal lung infection in immunocompromised patients. The research reviewed 55 studies with over 11,000 tests and found that PCR testing of fluid from the lungs or induced sputum works very well, especially at ruling out the disease when negative. However, positive test results need careful interpretation because the test can detect the fungus even when it’s just colonizing rather than causing active infection.

Extraction and Identification of the Bioactive Metabolites Produced by Curvularia inaequalis, an Endophytic Fungus Collected in Iran from Echium khuzistanicum Mozaff

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Scientists discovered a beneficial fungus living inside the leaves of an Iranian medicinal plant. They isolated three compounds from this fungus, with the main compound showing powerful activity against drug-resistant bacteria and plant-damaging fungi. This discovery suggests that beneficial fungi within plants could be valuable sources for developing new medicines and natural pesticides.

Localized Versus Diffuse Corneal Invasion in Fungal Keratitis: Histological Insights from Candida albicans and Fusarium falciforme

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This study compared how two different fungi invade the cornea (clear part of the eye) by examining tissue samples from patients who had severe eye infections. Candida stayed in one small area while Fusarium spread throughout the entire cornea tissue. The findings suggest that different fungi behave very differently when infecting the eye, which could help doctors choose better treatments. Understanding these differences may explain why Fusarium infections are much harder to treat with medications alone.

Gut fungi are associated with human genetic variation and disease risk

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Researchers discovered for the first time how human genes influence the fungi living in our gut and how this connection affects heart disease risk. They found that a yeast called Kazachstania is regulated by a gene called CDH13, and people with certain genetic variants have less of this beneficial yeast and higher risk of heart disease. This groundbreaking study shows that our genetics don’t just affect bacteria in our gut—they also shape our fungal community, which has real implications for heart health.

A Novel Erinacine S Derivative from Hericium erinaceus Overcomes Chemoresistance in Colorectal Cancer Cells by Enhancing TRAIL/TNFR1/DR5 Expression through Histone Acetylation

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Researchers found that erinacine S, a compound from Lion’s Mane mushroom, can help kill colorectal cancer cells that have become resistant to chemotherapy drugs. The compound works by activating death pathways in cancer cells and modifying how genes are expressed. In mouse studies, erinacine S significantly reduced tumor growth compared to standard chemotherapy alone. This suggests Lion’s Mane mushroom derivatives could potentially be developed as a natural treatment option for patients with drug-resistant colorectal cancer.

Reelin cells and sex-dependent synaptopathology in autism following postnatal immune activation

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Researchers found that infections in newborn mice, particularly males, can disrupt brain development and lead to autism-like behaviors by damaging special brain cells called Reelin+ cells that help synapses mature properly. These damaged synapses failed to develop normally, resulting in social withdrawal and repetitive behaviors similar to autism in humans. Importantly, the study found that male mice were much more susceptible to this immune-triggered damage than female mice. The findings suggest that Reelin could be a promising therapeutic target for treating autism in children who experienced infections early in life.

Evaluation of Antifungal Activity Against Candida albicans Isolates From HIV-Positive Patients with Oral Candidiasis in a Major Referral Hospital, West Java, Indonesia

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This study examined fungal infections of the mouth in HIV-positive patients in Indonesia. Researchers identified different types of Candida fungi and tested how well common antifungal medications worked against them. While most medications were effective, they found some cases of drug resistance, suggesting the importance of proper testing to choose the best treatment for each patient.

Time- and temperature-dependent Pentraxin 3 stability in serum and bronchoalveolar lavage fluid samples

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Researchers tested how stable Pentraxin 3, a protein marker for fungal infections, remains when stored under different conditions. They found that samples stored in freezers at −20°C or −80°C kept stable for months, making Pentraxin 3 a reliable marker for diagnosing serious fungal infections. However, samples stored at warm temperatures degraded quickly, so proper cold storage is essential for accurate test results.

Structural and Functional Analysis of Peptides Derived from KEX2-Processed Repeat Proteins in Agaricomycetes Using Reverse Genetics and Peptidomics

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Researchers studied special peptides made by mushrooms that are processed by fungal enzymes called KEX2 and KEX1. They developed a method to find and identify these peptides in mushroom tissues and confirmed they exist in both laboratory and edible mushroom species like shiitake and oyster mushrooms. When they removed the genes for these processing enzymes, the mushrooms had problems growing and forming fruiting bodies, suggesting these enzymes have important roles beyond just processing these specific peptides.

The Stress of Fungicides Changes the Expression of Clock Protein CmFRQ and the Morphology of Fruiting Bodies of Cordyceps militaris

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Researchers treated a medicinal mushroom (Cordyceps militaris) with antifungal drugs at non-lethal doses and found that this stress affected the mushroom’s internal clock and fruiting body development. Interestingly, while most fungicides caused the fruiting bodies to degenerate, one drug (5-fluorocytosine) surprisingly rejuvenated degenerated strains. The effects persisted even after removing the drugs, suggesting fungicides cause lasting changes to the mushroom’s circadian rhythm.

Research Topic: Medicinal