Reactive oxygen species – Page 3

Antimicrobial effects and mechanisms of hydrogen sulphide against nail pathogens

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Researchers discovered that hydrogen sulphide (H2S), a small gas molecule, can effectively kill the fungi and bacteria that cause painful nail infections. Unlike current treatments that struggle to penetrate into the nail, hydrogen sulphide easily diffuses through the nail plate. The study found that H2S works by damaging the fungi’s respiratory system and creating harmful reactive oxygen species, while also modifying proteins in a way that disrupts their normal function. This innovative approach could offer patients a new topical treatment option for nail infections that have been difficult to treat with existing medications.

A Possible Involvement of Sialidase in the Cell Response of the Antarctic Fungus Penicillium griseofulvum P29 to Oxidative Stress

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Scientists studied a fungus from Antarctica to understand how it survives in extremely cold conditions. They discovered that when exposed to cold temperatures, this fungus produces more of an enzyme called sialidase, which appears to help protect cells from damage caused by reactive oxygen molecules. This finding adds to our understanding of how microorganisms adapt and survive in the world’s harshest environments.

Inhibition Mechanism of Cinnamomum burmannii Leaf Essential Oil Against Aspergillus flavus and Aflatoxins

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This research shows that essential oil from cinnamon leaves can effectively prevent a dangerous fungus (Aspergillus flavus) from contaminating stored foods like peanuts and grains, and stops it from producing a cancer-causing toxin called aflatoxin. The oil works by damaging the fungus’s cell membrane, disrupting its energy production, and triggering stress responses. Ten main aromatic compounds in the oil, especially eucalyptol and borneol, are responsible for this protective effect. This suggests cinnamon leaf oil could be used as a natural, safe alternative to chemical fungicides for protecting stored food.

Potential of traditional Chinese medicine in gastrointestinal disorders: Hericium erinaceus in chronic atrophic gastritis

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Lion’s Mane mushroom (Hericium erinaceus) shows promise for treating chronic stomach inflammation and preventing gastric cancer. Studies indicate it can reduce stomach pain, improve endoscopic findings, and fight harmful bacteria like H. pylori. Its active compounds work by reducing inflammation, oxidative stress, and promoting cancer cell death, offering a natural complement to conventional treatments.

Energy Metabolism Enhance Perylenequinone Biosynthesis in Shiraia sp. Slf14 through Promoting Mitochondrial ROS Accumulation

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Scientists studied two similar fungi to understand how one produces more of a beneficial compound called perylenequinones (PQs), which have medical uses against infections and cancer. They discovered that the high-producing strain uses energy more efficiently, which causes tiny structures in the cells called mitochondria to produce reactive molecules (ROS). These reactive molecules trigger the fungus to make more PQs as a protective response. By controlling these processes, researchers can potentially improve the production of this valuable medicine.

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 yeast infections caused by Candida albicans. When this protein is missing from immune cells, mice become much more susceptible to severe fungal infections. The study found that PTP1B helps immune cells called macrophages and neutrophils kill fungi effectively, and when it’s absent, these immune cells work poorly. This discovery suggests that targeting PTP1B could be a new way to help patients fight off serious fungal infections.

Deoxynucleosides as promising antimicrobial agents against foodborne pathogens and their applications in food and contact material surfaces

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Researchers found that two nucleoside compounds (ddA and FdCyd) can effectively kill harmful bacteria like Vibrio and Salmonella that form slimy biofilms on seafood and food preparation surfaces. These compounds work by damaging bacterial cell membranes and preventing bacteria from communicating with each other. When combined with a food additive already used in the meat industry, these nucleosides become even more effective at much lower doses, potentially making food safer while reducing residual chemical effects.

Skin Improvement with Antioxidant Effect of Yuja (Citrus junos) Peel Fractions: Wrinkles, Moisturizing, and Whitening

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Yuja, a citrus fruit traditionally used in Asian medicine, shows promising benefits for skin health. This study found that extracts from Yuja peels can help reduce wrinkles, improve skin moisture, and lighten dark spots by protecting skin cells from UV damage and reducing harmful free radicals. The effects work through natural mechanisms that boost collagen production and inhibit melanin overproduction, making Yuja peel fractions promising ingredients for new skincare products.

Strategies and materials for the prevention and treatment of biofilms

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Biofilms are sticky communities of bacteria that form on medical devices and surfaces, making infections very difficult to treat with antibiotics. This review explains how biofilms develop in stages and describes different ways to stop them from forming or to destroy them once they exist. Solutions include special coatings on medical implants, natural plant extracts like essential oils, and engineered proteins called antimicrobial peptides that fight bacteria without creating antibiotic resistance.

Natural Products in Renal-Associated Drug Discovery

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This research examines how natural products like green tea and medicinal mushrooms can help treat kidney diseases. Scientists reviewed various plants used in traditional medicine and analyzed how compounds from these plants affect gene expression in kidney cells. The study identified specific genes and biological pathways that explain how these natural antioxidants and anti-inflammatory agents protect kidneys from injury and disease.

Research Keyword: Reactive oxygen species