Antimicrobial activity – Page 11

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.

Genome-Mining Based Discovery of Pyrrolomycin K and L from the Termite-Associated Micromonospora sp. RB23

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Scientists discovered two new antimicrobial compounds called pyrrolomycins from bacteria living in termites using genome sequencing and chemical analysis. These compounds contain chlorine atoms and are related to known antibiotics. The research shows how the bacteria protects itself from its own antimicrobial compounds through chemical modifications, offering insights into developing new antibiotics.

Chitosan and Chitooligosaccharide: The Promising Non-Plant-Derived Prebiotics with Multiple Biological Activities

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Chitosan and chitooligosaccharide are natural compounds derived from crustacean shells and fungi that act as prebiotics to improve gut health. These compounds can fight bacteria and viruses, reduce inflammation, protect against oxidative stress, and help maintain healthy weight and blood sugar levels. They represent a promising, biodegradable alternative to synthetic pharmaceuticals with multiple health benefits.

Phialomyces koreanus sp. nov., A Novel Soil Fungus from Korea

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Scientists in Korea discovered a new species of fungus in forest soil and named it Phialomyces koreanus. Using both microscopic examination and genetic analysis, they determined this fungus was distinctly different from previously known species in the same genus. This discovery adds to our understanding of the diverse fungi living in Korean soils and may have potential applications in pest control and environmental cleanup. This is the first Phialomyces species ever documented from Korea.

In silico screening and molecular dynamics analysis of natural DHPS enzyme inhibitors targeting Acinetobacter baumannii

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Researchers used computer modeling to find natural compounds from plants and mushrooms that can inhibit a key bacterial enzyme (DHPS) in dangerous antibiotic-resistant bacteria called Acinetobacter baumannii. They tested thousands of natural molecules and identified two promising candidates that bind strongly to this enzyme and prevent bacteria from producing folic acid, which they need to survive. The study suggests these natural compounds could potentially be developed into new antibiotics to fight infections caused by drug-resistant bacteria.

Chemical Composition, Bioactive Compounds, and Antioxidant Activity of Two Wild Edible Mushrooms Armillaria mellea and Macrolepiota procera from Two Countries (Morocco and Portugal)

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This study compared two edible wild mushrooms (honey fungus and parasol mushroom) from Morocco and Portugal to understand their health benefits. Both mushrooms were found to be rich in compounds with antioxidant properties that help protect cells from damage. The research shows that where mushrooms grow—whether in Morocco or Portugal—affects their chemical makeup and healing potential, with Moroccan honey fungus showing particularly strong antioxidant power.

Ganoderma lucidum inspired silver nanoparticles and its biomedical applications with special reference to drug resistant Escherichia coli isolates from CAUTI

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Researchers created tiny silver particles using a medicinal mushroom called Ganoderma lucidum to fight dangerous bacteria that resist antibiotics and are associated with urinary catheter infections. These nanoparticles were found to effectively kill drug-resistant bacteria, work as antioxidants better than a common antioxidant standard, and showed promise in killing breast cancer cells. This eco-friendly approach offers a natural alternative to conventional antibiotics for treating serious antibiotic-resistant infections.

Biocontrol of Aflatoxigenic Maize Molds Using Lactobacillus spp.-Based Formulations

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This study shows that beneficial bacteria called Lactobacillus, found in traditional fermented foods like fura and gapal, can effectively reduce dangerous mold toxins (aflatoxins) in maize. Researchers tested these bacteria on contaminated maize samples and found they could reduce fungal contamination by up to 68% and completely eliminate some toxins. This natural approach offers a safer, cheaper alternative to chemical treatments while preserving food quality and safety.

Microbial-Based Green Synthesis of Silver Nanoparticles: A Comparative Review of Bacteria- and Fungi-Mediated Approaches

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Scientists have developed environmentally friendly ways to create tiny silver particles using bacteria and fungi instead of harsh chemicals. These silver nanoparticles can fight bacteria, help treat cancer, clean contaminated water, and improve food packaging. The review shows that bacteria produce particles quickly but fungi are better for large-scale production and create more stable particles.

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.

therapeutic action: Antimicrobial activity