Medicinal – Page 127

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.

Antifungal efficacy of caffeic acid and nano-caffeic acid particles against candidiasis: an in vitro study

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Researchers developed a nano-particle form of caffeic acid, a natural compound found in coffee and tea, to treat oral yeast infections (candidiasis). The nano-version showed better antifungal activity than regular caffeic acid, though not as strong as prescription antifungal drugs. Since it comes from plants with fewer side effects, it could offer an alternative treatment option for patients with candidiasis.

The 2024 International Society for Human and Animal Mycology (ISHAM)-ABPA working group guidelines: Transforming diagnosis and management of ABPA

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Allergic bronchopulmonary aspergillosis (ABPA) is a serious lung condition that develops when people with asthma have an allergic reaction to Aspergillus fungus. New international guidelines now provide better ways to diagnose and treat this condition, making it easier for doctors to identify ABPA early and prescribe the right treatment to prevent serious lung damage like bronchiectasis.

The In vitro Effect of Nanoliposomal Amphotericin B Against Rhizopus arrhizus Isolated From COVID-19-Associated Mucormycosis Patients

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Scientists tested a new nano-formulation of the antifungal drug amphotericin B against a dangerous fungus (Rhizopus arrhizus) that infected COVID-19 patients with mucormycosis. The nanoliposomal version of the drug worked much better than regular amphotericin B and other antifungal medications currently used, showing much lower concentrations needed to kill the fungus. This research suggests the new nano-formulation could be a more effective treatment option for patients with this serious COVID-19 related fungal infection.

In vitro and In silico investigation deciphering novel antifungal activity of endophyte Bacillus velezensis CBMB205 against Fusarium oxysporum

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Researchers isolated a beneficial bacteria called Bacillus velezensis from medicinal plants that can fight against a dangerous fungus causing banana wilt disease. Through laboratory and computer studies, they identified two natural compounds produced by this bacteria that stop the fungus from growing by damaging its cell walls. This discovery offers a promising eco-friendly alternative to chemical fungicides for protecting banana crops worldwide.

Inhibitory Effect and Mechanism of Dryocrassin ABBA Against Fusarium oxysporum

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Researchers found that dryocrassin ABBA, a compound from a traditional East Asian fern, can effectively kill the fungus that causes potato rot disease. The compound damages the fungus by increasing harmful reactive oxygen species and disrupting the fungus’s ability to break down plant cell walls. This natural substance could potentially replace synthetic chemical fungicides, offering a safer and more environmentally friendly way to protect potatoes from disease.

Odontogenic-onset mucormycosis: A case series from a tertiary care institute in North India

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Mucormycosis is a serious fungal infection that can develop after dental procedures like tooth extraction or root canal therapy, especially in people with poorly controlled diabetes. This case study from India describes five patients who developed this infection within weeks of dental work. The infection destroys bone in the upper jaw and palate but usually doesn’t spread to the sinuses like other forms of mucormycosis. All patients improved with antifungal medications and surgical cleaning, highlighting the importance of proper sterilization during dental procedures.

Effects of Short-Chain Fatty Acid Combinations Relevant to the Healthy and Dysbiotic Gut upon Candida albicans

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Short-chain fatty acids produced by healthy gut bacteria appear to slow the growth and reduce the invasive characteristics of Candida albicans, a fungus that normally lives harmlessly in the gut but can cause infections when the microbiota is disrupted by antibiotics. This study tested whether healthy gut SCFA levels inhibit Candida more effectively than dysbiotic levels and found that the healthy SCFA mix was somewhat more effective at preventing fungal hyphal formation, which is important for tissue invasion. However, different Candida strains responded differently to the SCFAs, suggesting that individual variation affects how protective these bacterial metabolites can be.

Discovery of the antifungal compound ilicicolin K through genetic activation of the ilicicolin biosynthetic pathway in Trichoderma reesei

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Scientists used genetic engineering to activate a dormant gene cluster in the fungus Trichoderma reesei, enabling it to produce the antifungal compound ilicicolin H in high quantities. During this process, they discovered a new related compound called ilicicolin K that shows even stronger antifungal properties. These compounds could potentially overcome limitations of current antifungal treatments, especially against drug-resistant fungi like Candida auris.

Research Topic: Medicinal