innate immunity – Page 3

Immunomodulatory functions of fungal melanins in respiratory infections

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Some dangerous fungi produce a dark pigment called melanin that acts like a cloak, protecting them from the body’s immune system. This review explains how melanin blocks multiple immune defenses, including suppressing warning signals to immune cells, preventing immune cells from engulfing and killing the fungi, and even absorbing harmful reactive molecules. Understanding these sneaky tactics could help scientists develop new treatments that strip away this protective cloak, making the fungi vulnerable to both the body’s natural defenses and antifungal drugs.

Potential relationship between gut microbiota and animal diarrhea: a systematic review

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This review explains how the trillions of microorganisms living in animal intestines are crucial for health and digestion. When these microbial communities become imbalanced, animals develop diarrhea, which is a major problem in farming causing economic losses and animal suffering. The review shows that adding beneficial bacteria (probiotics) and their food sources (prebiotics) to animal diets can restore balance and prevent diarrhea, offering practical solutions to reduce the need for antibiotics.

Effects of Chronic Barley Consumption on Upper Respiratory Tract Symptoms in Japanese Healthy Adults: A Randomized, Parallel-Group, Controlled Trial

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This study found that eating cooked waxy barley daily for 8 weeks reduced sneezing and nasal congestion in healthy adults compared to those eating white rice. Participants who ate barley also reported feeling less tired and experienced improved mood. The barley contains a fiber called β-glucan that appears to boost the body’s natural immune cells, helping protect against cold symptoms.

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.

Clinical benefits of β-glucan supplementation in children: a review

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This review examines how β-glucan, a natural fiber found in mushrooms, yeast, and grains, can help strengthen children’s immune systems and improve their health. Studies show that β-glucan supplementation may reduce the frequency and severity of colds and respiratory infections, improve digestive health, help control blood sugar levels, and support overall development. The evidence suggests that β-glucan could be a valuable dietary supplement for malnourished or immunocompromised children worldwide.

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

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Candida albicans is a fungus that causes infections in humans. The fungus has developed a clever way to hide from our immune system by covering up a molecule on its surface called β-1,3-glucan that normally triggers immune responses. This study shows that the fungus masks this molecule through a combination of growing and dividing to create new surfaces, and then using enzymes to trim away exposed molecules. The research reveals that a specific cell signaling pathway controlled by lactate (a chemical found in our bodies) activates this masking behavior, helping the fungus evade immune recognition.

Impact of Phellinus gilvus mycelia on growth, immunity and fecal microbiota in weaned piglets

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Researchers tested whether a medicinal mushroom called Phellinus gilvus could replace antibiotics in pig feed as a growth promoter. Over 28 days, piglets fed mushroom-supplemented diets grew as well as those given antibiotics while showing even better immune system activation. Unlike antibiotics that drastically changed the gut bacteria composition, the mushroom only slightly modified it while still reducing harmful E. coli bacteria. This suggests the mushroom could be a safer alternative to antibiotics in pig farming.

The C-type lectin receptor Dcir (Clec4a2) restrains Aspergillus fumigatus elimination by limiting the degranulatory activity of neutrophils

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This study reveals that a receptor called Dcir on immune cells called neutrophils actually prevents effective killing of the fungus Aspergillus fumigatus by limiting the release of antibacterial granules. When researchers removed Dcir from mice, their neutrophils became more effective at fighting the fungal infection. This suggests that blocking Dcir might help patients with fungal respiratory infections clear the pathogen more effectively.

Ex Vivo Host Transcriptomics During Cryptococcus neoformans, Cryptococcus gattii, and Candida albicans Infection of Peripheral Blood Mononuclear Cells From South African Volunteers

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Researchers studied how human immune cells respond to three different fungal infections that commonly affect people with weakened immune systems. By examining gene activity in blood cells exposed to these fungi, they discovered that each fungus triggers different immune responses, with Candida albicans causing a much stronger reaction than the two Cryptococcus species. Only one shared immune pathway was activated by all three fungi, suggesting each infection requires different immune mechanisms to fight off. These findings could help develop new treatments for serious fungal infections.

A concise review of mushrooms antiviral and immunomodulatory properties that may combat against COVID-19

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This review explores how medicinal mushrooms have compounds that could help fight COVID-19 and boost immune function. Various mushroom species contain natural substances like beta-glucans and polysaccharides that have shown antiviral properties and can strengthen the body’s immune response. The research suggests these mushrooms could potentially be used alongside conventional treatments to help patients recover from COVID-19 more effectively.

Research Keyword: innate immunity