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A polysaccharide from Tremella aurantialba improves ulcerative colitis symptoms by targeting epithelial cell ferroptosis and modulating the gut microbiota.
2024 International Journal of Biological Macromolecules Tremella aurantialba polysaccharides alleviate ulcerative colitis in mice by improving intestinal barrier via modulating gut microbiota and inhibiting ferroptosis Peng G, Wang S, Zhang H, Xie F, Jiao L, Yuan Y, et al.
Animal Study Gut Microbiota Intestinal Barrier Snow Fungus
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.
Pomegranate juice consumption appears to somewhat enhance inflammatory status and complete blood count in hospitalized COVID-19 patients.
2023 Complementary Therapies in Medicine Adjuvant pomegranate juice intake improves the inflammatory status of hospitalized COVID-19 patients: A randomized and placebo-controlled trial Yousefi M, Sadriirani M, Mahmoodi S, Samimi B, Pourmahmoudi A, Hosseinikia M, et al.
Randomised Controlled Trial COVID-19 CRP Inflammation
The study was a randomized, double-blinded placebo-controlled trial involving 48 patients and had two parallel arms. As part of their standard hospital care, patients were either given 500 mL of whole pomegranate juice daily or a placebo for a period of 14 days. The researchers focused on measuring inflammatory indicators and complete blood counts both at the start of the study and at the end of the 14-day intervention period.
Following the 14-day intervention, there was a distinguishable decrease in primary outcomes including inflammatory markers such as C reactive protein, interleukin-6, and erythrocyte sedimentation rate in the group that consumed pomegranate juice as compared to the readings before the intervention. In addition, considerable changes were also observed in secondary outcomes such as neutrophils, lymphocytes, platelets, platelets-to-lymphocyte and neutrophils-to-lymphocyte ratios in the pomegranate juice group compared to the parameters before the intervention. Finally, the mean changes in levels of interleukin-6, white blood cells, neutrophils, lymphocyte, platelets, platelets-to-lymphocyte ratio, blood oxygen saturation and MCV were significantly different between the two groups by the end of intervention, while no significant difference was noted in other blood indices.
Rheumatoid arthritis-specific inflammation can be linked directly to the intestinal microbiota, thus, nutritional interventions against gut dysbiosis could function as a causal therapeutic approach.
2023 Journal of Clinical Medicine Intestinal Microbiota Reduction Followed by Fasting Discloses Microbial Triggering of Inflammation in Rheumatoid Arthritis Häupl T, Sörensen T, Smiljanovic B, Darcy M, Scheder-Bieschin J, Steckhan N, et al.
Clinical Study Inflammation Rheumatoid Arthritis
The study initiated by reducing the intestinal microbiome in 20 Rheumatoid Arthritis patients through bowel cleansing and a week of fasting, limiting the intake to 250 kcal/day. It also employed immune monitoring and sequencing of the microbiome. A control group constituting patients with metabolic syndrome was incorporated to serve as a non-inflammatory baseline. To understand the fluctuation and impact on disease activity, disease activity scores were calculated and cytometric profiling was performed, tracing up to 46 different surface markers. Additionally, serum levels of certain cytokines and indicators of mucosal barrier disruption were monitored.
The change in intestinal microbiota, i.e., the effect of fasting on arthritogenic bacteria and the shift in microbial composition, was analyzed using sequencing. The detection of more eukaryotic, predominantly fungal colonizers in RA patients was also observed to understand their potential involvement. Finally, the study investigated the observed increase in endogenous cortisol levels during fasting.
Seaweed polysaccharides, especially those found in the cell walls of marine algae, hold significant potential as a natural, complementary treatment for Inflammatory Bowel Disease (IBD).
2023 Life The Role of Seaweed Polysaccharides in Gastrointestinal Health: Protective Effect against Inflammatory Bowel Disease Liyanage NM, Nagahawatta DP, Jayawardena TU, Jeon YJ
Digestive Health Inflammatory Bowel Disease Seaweed
The study analysed the therapeutic properties of sulfated polysaccharides, including carrageenan in red algae, ulvan in green algae, and fucoidan in brown algae, which are abundantly present in the cell walls of marine algae. Addressing key IBD pathologic treatment targets, the research explored polysaccharides' effects on inflammatory cytokines, adhesion molecules, intestinal epithelial cells, and intestinal microflora. These therapeutic targets were analyzed with an emphasis on utilizing natural substances like seaweed polysaccharides for improving IBD treatment efficacy.
Building upon the theory of a nutritional preventive mechanism for IBD and the restoration of intestinal health, the findings underscore the potent therapeutic capabilities of these natural compounds. Algal polysaccharides were found to have immense potential as a complementary treatment for IBD. It was suggested that these natural substances can be developed into effective drugs and functionally nutritious products, emphasizing a natural approach towards managing this global public health issue.
Tremella fuciformis polysaccharides effectively reduce inflammation in ulcerative colitis, promoting healing by restoring intestinal and mucus barrier functions.
2021 International Journal of Biological Macromolecules Tremella fuciformis polysaccharides ameliorated ulcerative colitis via inhibiting inflammation and enhancing intestinal epithelial barrier function Xu Y, Xie L, Zhang Z, et al
Experimental Study Intestinal Barrier Polysaccharides Snow Fungus
In this study, two models were utilized to investigate the impacts of Tremella fuciformis polysaccharides on ulcerative colitis: a dextran sodium sulfate-induced mice model and a lipopolysaccharide-stimulated model using Caco-2 cells. First, the dextran sodium sulfate-induced mice ulcerative colitis model was administered with the Tremella fuciformis polysaccharides. Effects were observed across several indicators such as body weight, colon length, and thickness, as well as intestinal permeability.
Following that, histopathological analysis and electron microscope examinations helped delve deeper into the relationship, uncovering a reduction in inflammatory cell infiltration and a restoration of the intestinal epithelial barrier integrity. The lipopolysaccharide-stimulated Caco-2 cells model was used to further understand the role of these polysaccharides in reducing expressions of pro-inflammatory cytokines and increasing expressions related to intestinal barrier and mucus barrier.
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