Insights & Discussion
Korean pear extracts appear to alleviate air pollution-related respiratory hypersensitivity by modulating beneficial gut microflora and suppressing pro-inflammatory cytokines.
In the preclinical and randomized double-blind clinical studies, mild-asthma subjects living in Seoul, Korea were divided into two groups: one receiving a daily treatment of pear extracts for four weeks, and a placebo group. The pear extract was tested for its ability to mitigate respiratory hypersensitivity connected to air pollution. The treatment's effects were evaluated based on the toxicokinetic study of exposure biomarkers for airborne polyaromatic hydrocarbons and levels of pro-inflammatory cytokines in human subjects.
In terms of results, it was found that those individuals receiving daily pear extract exhibited decreased levels of exposure biomarkers related to airborne polyaromatic hydrocarbons. Furthermore, the pear extract treatment was associated with a significant increase in populations of fiber-degrading bacteria that boost beneficial gut microflora crucial for immune defense. Additionally, the extracts significantly suppressed the production of various pro-inflammatory cytokines, as per the preclinical tests conducted on asthma-induced mice. Overall, these outcomes suggest a beneficial role of Korean pear extracts in mitigating air pollution-related respiratory hypersensitivity.
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The methodology used in this research involved isolating TA 2-1, a specific polysaccharide from Tremella Aurantialba, and studying its effects on ulcerative colitis. This was done by introducing it to Caco-2 cells that were undergoing ferroptosis and assessing its impact on cell viability. The influence of TA 2-1 was also examined in mice with artificially induced ulcerative colitis, verifying its ameliorating effects in an in-vivo context. The structure of TA 2-1 and its components were analysed and the polysaccharide's interaction with gut microbiota was explored to understand how it might modulate symptoms or prevent cell death.
The results of this study showed that TA 2-1 does not only decrease the rate of cell death in epithelial cells undergoing ferroptosis, but it also repairs the intestinal barrier by upregulating specific proteins such as claudin-1 and zonula occludens-1. TA 2-1 was also found to suppress lipid peroxidation, thus inhibiting ferroptosis. Further investigation revealed that TA 2-1 may alleviate ulcerative colitis by influencing the composition or metabolites of gut microbiota. This research offers promising insight into the potential of TA 2-1 in treating ulcerative colitis.
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The study involved 60 patients with confirmed Type 2 Diabetes, who drank “Sneznik-1/79” mineral water from Serbia daily for 28 days. Researchers conducted standard biochemical tests, including glucose level, lipid profile, and stool analysis. Additionally, blood samples were taken to assess the impact of the water on oxidative stress markers.
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Berry fruits such as blueberries, cranberries, raspberries, and strawberries could potentially improve gut microbiota and reverse dysbiosis in chronic kidney disease patients.
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Review Article Chronic Kidney Disease Cranberry Gut Microbiota
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The research entailed a comparative study conducted on goji berry and mulberry leaves versus their respective fruits. To determine their anti-colitis effects, the experiment was administered to C57BL/6N mice that had been induced with colitis through dextran-sulfate-sodium. Through the utilization of measures such as ELISA and western blotting analysis, researchers were able to observe how each leaf versus its corresponding fruit ameliorated colitic symptoms, tissue damage, and was able to influence the overproduction of certain pro-inflammatory cytokines.
The results showed that both the goji berry leaf and fruit significantly reduced symptoms of colitis and improved tissue damage while the mulberry leaf did not show similar improvements. The goji berry leaf exhibited the strongest performance in restraining the overproduction of pro-inflammatory cytokines and further repairing the damaged colonic barrier. It also effectively adjusted gut microbiota equilibrium by increasing beneficial bacteria and decreasing harmful ones. The berries and leaves similarly restored certain dietary fibers to alleviate inflammation, but the mulberry leaf did not achieve this for butyrate. This is the first report to provide a comprehensive contrast of anti-colitis effects between the leaves and fruits of goji and mulberry.
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