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Marine Drugs Free Full-Text Fucoidan from Laminaria japonica Inhibits Expression of GLUT9 and URAT1 via PI3KAkt, JNK and NF-B Pathways in Uric Acid-Exposed HK-2 Cells
Marine Drugs Free Full-Text Fucoidan from Laminaria japonica Inhibits Expression of GLUT9 and URAT1 via PI3KAkt, JNK and NF-B Pathways in Uric Acid-Exposed HK-2 Cells
This work aimed to investigate the effect of fucoidan (FPS) on urate transporters induced by uric acid (UA). The results showed that UA stimulated the expression of glucose transporter 9 (GLUT9) and urate transporter 1 (URAT1) in HK-2 cells, and FPS could reverse the effect. Moreover, UA could activate NF-κB, JNK and PI3K/Akt pathways, but both pathway inhibitors and FPS inhibited the UA-induced activation of these three pathways. These data suggested that FPS effectively inhibited the expression induction of reabsorption transporters URAT1 and GLUT9 by UA, through repressing the activation of NF-κB, JNK and PI3K/Akt signal pathways in HK-2 cells. The in vitro research findings support the in vivo results that FPS reduces serum uric acid content in hyperuricemia mice and rats through inhibiting the expression of URAT1 and GLUT9 in renal tubular epithelial cells. This study provides a theoretical basis for the application of FPS in the treatment of hyperuricemia.
·mdpi.com·
Marine Drugs Free Full-Text Fucoidan from Laminaria japonica Inhibits Expression of GLUT9 and URAT1 via PI3KAkt, JNK and NF-B Pathways in Uric Acid-Exposed HK-2 Cells
The role of disaccharidases in the digestion - diagnosis and significance of their deficiency in children and adults - PubMed
The role of disaccharidases in the digestion - diagnosis and significance of their deficiency in children and adults - PubMed
Disaccharidases are a group of enzymes of the small intestinal brush border, that are essential for degradation of disaccharides (sucrose, lactose, maltose, isomaltose, trehalose) into monosaccharides, which are then absorbed from the gastrointestinal tract. Their deficiency may occur at any stage o …
·pubmed.ncbi.nlm.nih.gov·
The role of disaccharidases in the digestion - diagnosis and significance of their deficiency in children and adults - PubMed
The Best Natural & Non Toxic Sweeteners - YouTube
The Best Natural & Non Toxic Sweeteners - YouTube
Click here to subscribe - https://www.glutenfreesociety.org/wxrn What are The Best Natural & Non Toxic Sweeteners? Some of the best natural sweeteners to use instead of sugar, aspartame (Nutrasweet), sucralose (Splenda), etc are listed below, but be careful not to overdo these either. Remember that too much natural sugar can also be detrimental. 1. Eat real fruit when it is in season 2. Honey - make sure it is naturally sourced and organic. Many brands of honey are laced with corn syrup. 3. Maple - pure organic 4. Organic Dates 5. Stevia 6. Monk Fruit 7. Sugar Alcohol (xylitol derived from birch) If you want a more in depth look on the topic of natural sweeteners, toxic sweeteners, and alternatives, check out this video: https://www.youtube.com/watch?v=v4BWY-4ptzg To connect with Dr. Osborne visit: On the web: https://drpeterosborne.com/ Facebook: https://www.facebook.com/DoctorPeterO... Pinterest: https://www.pinterest.com/docosborne/ Instagram: https://www.instagram.com/drosborne Twitter: https://twitter.com/glutenology *These statements have not been evaluated by the Food and Drug Administration. This video is not intended to diagnose, treat, cure or prevent any disease. It is strictly intended for educational purposes only. Additionally, this information is not intended to replace the advice of your physician. Dr. Osborne is not a medical doctor. He does not treat or diagnose disease. He offers nutritional support to people seeking an alternative from traditional medicine. Dr. Osborne is licensed with the Pastoral Medical Association.
·youtube.com·
The Best Natural & Non Toxic Sweeteners - YouTube
Synthesis and evaluation of trehalose-based compounds as novel inhibit (...)
Synthesis and evaluation of trehalose-based compounds as novel inhibit (...)
As a continuous research for the discovery of trehalose-based anti-invasive agents, we developed a convenient synthetic approach for the preparation of 6,6'-dideoxy-6,6'-bis(acylamino)-α,α-D-trehaloses. A series of trehalose-based amides were prepared through the trityl protection of the two primary …
·ncbi.nlm.nih.gov·
Synthesis and evaluation of trehalose-based compounds as novel inhibit (...)
Marine Drugs Free Full-Text Fucoidan from Undaria pinnatifida Ameliorates Epidermal Barrier Disruption via Keratinocyte Differentiation and CaSR Level Regulation HTML
Marine Drugs Free Full-Text Fucoidan from Undaria pinnatifida Ameliorates Epidermal Barrier Disruption via Keratinocyte Differentiation and CaSR Level Regulation HTML
The epidermal barrier acts as a line of defense against external agents as well as helps to maintain body homeostasis. The calcium concentration gradient across the epidermal barrier is closely related to the proliferation and differentiation of keratinocytes (KCs), and the regulation of these two processes is the key to the repair of epidermal barrier disruption. In the present study, we found that fucoidan from Undaria pinnatifida (UPF) could promote the repair of epidermal barrier disruption in mice. The mechanistic study demonstrated that UPF could promote HaCaT cell differentiation under low calcium condition by up-regulating the expression of calcium-sensing receptor (CaSR), which could then lead to the activation of the Catenin/PLCγ1 pathway. Further, UPF could increase the expression of CaSR through activate the ERK and p38 pathway. These findings reveal the molecular mechanism of UPF in the repair of the epidermal barrier and provide a basis for the development of UPF into an agent for the repair of epidermal barrier repair.
·mdpi.com·
Marine Drugs Free Full-Text Fucoidan from Undaria pinnatifida Ameliorates Epidermal Barrier Disruption via Keratinocyte Differentiation and CaSR Level Regulation HTML
Experts cool concerns over FDA Aloe vera carcinogenicity study
Experts cool concerns over FDA Aloe vera carcinogenicity study
The safety of Aloe vera is solid despite a recent FDA analysis reporting ‘clear evidence of carcinogenicity’ since the FDA scientists studied aloe that is ‘completely different than many aloe vera products on the market’, say experts.
·nutraingredients-usa.com·
Experts cool concerns over FDA Aloe vera carcinogenicity study
Marine Drugs Free Full-Text Fucoidan Inhibits Radiation-Induced Pneumonitis and Lung Fibrosis by Reducing Inflammatory Cytokine Expression in Lung Tissues
Marine Drugs Free Full-Text Fucoidan Inhibits Radiation-Induced Pneumonitis and Lung Fibrosis by Reducing Inflammatory Cytokine Expression in Lung Tissues
Purpose: Radiotherapy is a crucial treatment approach for many types of cancer. Radiation pneumonitis (RP) is one of the major complications in chest irradiation. Fucoidan is a sulfated polysaccharide found mainly in various species of brown seaweed. Recent studies have demonstrated the anti-inflammatory effects of fucoidan. However, no study has reported a well-established prophylactic agent for RP. Therefore, we investigated the effects of fucoidan on RP and radiotherapy (RT)-induced lung fibrosis. Materials and Methods: We compared RP and RT-induced fibrosis in lung tissue specimens obtained from irradiated (10 Gy/shot) C57BL/6 mice with or without fucoidan administration (200 mg/kg/day, oral gavage for 14 days). The expression patterns of cytokines in the pleural fluid were determined using a cytokine array and confirmed through enzyme immunoassays. Results: Fucoidan administration attenuated RP and RT-induced fibrosis in lung tissues. Decreased neutrophil and macrophage accumulation was observed in irradiated lung tissues, and radiation-induced lung fibrosis, as demonstrated by Masson trichrome staining, was attenuated. We investigated the expression patterns of inflammatory cytokines in the irradiated lung pleural fluid through the protein array; results revealed that fucoidan administration changed the expression patterns of inflammatory cytokines in irradiated lung tissues. Furthermore, the expression levels of TIMP-1, CXCL1, MCP-1, MIP-2, and interleukin-1Ra were substantially enhanced in the pleural fluid, but fucoidan administration significantly reduced their expression. Conclusions: Fucoidan changes the expression patterns of inflammatory cytokines, which may consequently attenuate RP and RT-induced lung fibrosis.
·mdpi.com·
Marine Drugs Free Full-Text Fucoidan Inhibits Radiation-Induced Pneumonitis and Lung Fibrosis by Reducing Inflammatory Cytokine Expression in Lung Tissues
Advances in treatment of ulcerative colitis with herbs From bench to bedside
Advances in treatment of ulcerative colitis with herbs From bench to bedside
Ulcerative colitis (UC), an idiopathic inflammatory disorder in the colon, has become a clinical challenge, owing to the increasing incidence and poor prognosis. The conventional treatments for UC including aminosalicylates, corticosteroids, and immunosuppressants, ...
·ncbi.nlm.nih.gov·
Advances in treatment of ulcerative colitis with herbs From bench to bedside
A randomized, controlled study of the efficacy and safety of a new eye (...)
A randomized, controlled study of the efficacy and safety of a new eye (...)
Hyaluronic acid-trehalose is effective and safe, with better patient satisfaction, than existing HA-only eyedrops particularly from the first month of treatment, and offers a therapeutic advancement in the treatment of moderate to severe DED.
·ncbi.nlm.nih.gov·
A randomized, controlled study of the efficacy and safety of a new eye (...)
Beneficial effects of trehalose on striatal dopaminergic deficits in rodent and primate models of synucleinopathy in Parkinson's disease. - PubMed - NCBI
Beneficial effects of trehalose on striatal dopaminergic deficits in rodent and primate models of synucleinopathy in Parkinson's disease. - PubMed - NCBI
Disease modification in Parkinson's disease (PD) is an unmet medical need. In the current study, we evaluated trehalose, a safe and well-tolerated disaccharide that has previously demonstrated efficacy in rodent models of neurodegenerative diseases, including PD. In a rat model of PD, based on deliv …
·ncbi.nlm.nih.gov·
Beneficial effects of trehalose on striatal dopaminergic deficits in rodent and primate models of synucleinopathy in Parkinson's disease. - PubMed - NCBI
Trehalose Improves Cognition in the Transgenic Tg2576 Mouse Model of Alzheimer's Disease. - PubMed - NCBI
Trehalose Improves Cognition in the Transgenic Tg2576 Mouse Model of Alzheimer's Disease. - PubMed - NCBI
This study assessed the therapeutic utility of the autophagy enhancing stable disaccharide trehalose in the Tg2576 transgenic mouse model of Alzheimer's disease (AD) via an oral gavage of a 2% trehalose solution for 31 days. Furthermore, as AD is a neurodegenerative condition in which the transition …
·ncbi.nlm.nih.gov·
Trehalose Improves Cognition in the Transgenic Tg2576 Mouse Model of Alzheimer's Disease. - PubMed - NCBI
Marine Drugs Free Full-Text Fucoidan Rescues p-Cresol-Induced Cellular Senescence in Mesenchymal Stem Cells via FAK-Akt-TWIST Axis
Marine Drugs Free Full-Text Fucoidan Rescues p-Cresol-Induced Cellular Senescence in Mesenchymal Stem Cells via FAK-Akt-TWIST Axis
Mesenchymal stem cells (MSCs) are a source for cell-based therapy. Although MSCs have the potential for tissue regeneration, their therapeutic efficacy is restricted by the uremic toxin, p-cresol, in chronic kidney disease (CKD). To address this issue, we investigated the effect of fucoidan, a marine sulfated polysaccharide, on cellular senescence in MSCs. After p-cresol exposure, MSC senescence was induced, as indicated by an increase in cell size and a decrease in proliferation capacity. Treatment of senescent MSCs with fucoidan significantly reversed this cellular senescence via regulation of SMP30 and p21, and increased proliferation through the regulation of cell cycle-associated proteins (CDK2, CDK4, cyclin D1, and cyclin E). These effects were dependent on FAK-Akt-TWIST signal transduction. In particular, fucoidan promoted the expression of cellular prion protein (PrPC), which resulted in the maintenance of cell expansion capacity in p-cresol-induced senescent MSCs. This protective effect of fucoidan on senescence-mediated inhibition of proliferation was dependent on the TWIST-PrPC axis. In summary, this study shows that fucoidan protects against p-cresol-induced cellular senescence in MSCs through activation of the FAK-Akt-TWIST pathway and suggests that fucoidan could be used in conjunction with functional MSC-based therapies in the treatment of CKD.
·mdpi.com·
Marine Drugs Free Full-Text Fucoidan Rescues p-Cresol-Induced Cellular Senescence in Mesenchymal Stem Cells via FAK-Akt-TWIST Axis
Can trehalose prevent neurodegeneration Insights from experimental stu (...)
Can trehalose prevent neurodegeneration Insights from experimental stu (...)
Inappropriate protein aggregation is a key mechanism in the pathogenesis of several neurodegenerative disorders. One of the main strategies by which cells deal with abnormal protein aggregates is autophagy, a degradation pathway for intracellular aggregate-prone proteins. Trehalose, a non-reducing d …
·ncbi.nlm.nih.gov·
Can trehalose prevent neurodegeneration Insights from experimental stu (...)
Marine Drugs Free Full-Text Fucoidan Structure and Activity in Relation to Anti-Cancer Mechanisms
Marine Drugs Free Full-Text Fucoidan Structure and Activity in Relation to Anti-Cancer Mechanisms
Fucoidan is a natural derived compound found in different species of brown algae and in some animals, that has gained attention for its anticancer properties. However, the exact mechanism of action is currently unknown. Therefore, this review will address fucoidans structure, the bioavailability, and all known different pathways affected by fucoidan, in order to formulate fucoidans structure and activity in relation to its anti-cancer mechanisms. The general bioactivity of fucoidan is difficult to establish due to factors like species-related structural diversity, growth conditions, and the extraction method. The main pathways influenced by fucoidan are the PI3K/AKT, the MAPK pathway, and the caspase pathway. PTEN seems to be important in the fucoidan-mediated effect on the AKT pathway. Furthermore, the interaction with VEGF, BMP, TGF-β, and estrogen receptors are discussed. Also, fucoidan as an adjunct seems to have beneficial effects, for both the enhanced effectiveness of chemotherapy and reduced toxicity in healthy cells. In conclusion, the multipotent character of fucoidan is promising in future anti-cancer treatment. However, there is a need for more specified studies of the structure–activity relationship of fucoidan from the most promising seaweed species.
·mdpi.com·
Marine Drugs Free Full-Text Fucoidan Structure and Activity in Relation to Anti-Cancer Mechanisms
Co-lyophilized Aspirin with Trehalose Causes Less Injury to Human Gast (...)
Co-lyophilized Aspirin with Trehalose Causes Less Injury to Human Gast (...)
Background Aspirin is one of the most popular NSAIDs worldwide because of its anti-inflammatory and anticoagulant effects, and however, gastrointestinal injury remains a major complication. We previously reported co-lyophilized aspirin/trehalose (Lyo A/T) decreased the aspirin-induced gastric lesions in dogs. Aim This study investigated the mechanism of gastroprotective effects of trehalose in vitro and in vivo. Methods The apoptotic assays were performed in a human gastric carcinoma cell line, which was treated with aspirin, mixed aspirin/trehalose (Mix A/T) or Lyo A/T. Gastric ulcer severity was examined after oral administration of drugs in rats. In addition, the mucosal tissue apoptotic status in drug-treated rats was evaluated. Molecular dynamics simulations and laser Raman spectroscopy were performed in order to examine the molecular properties of Lyo A/T. Results DNA fragmentation was detected in AGS cells that were treated with aspirin and Mix A/T, but not in the Lyo A/T-treated cells. There were fewer apoptotic cells in the Lyo A/T-treated cells than in the other cells. Gastric injury was reduced in rats that received oral Lyo A/T compared with the others, while PGE2 synthesis was equally decreased in all groups. TUNEL assay and immunohistochemistry of cleaved caspase-3 in the mucosal tissues also revealed that Lyo A/T treatment induced less apoptosis than the others. The Lyo A/T spectrum showed clear differences in several Raman bands compared with that of Mix A/T. Conclusions Our data showed that co-lyophilization of aspirin with trehalose reduced gastric injury, potentially through suppression of aspirin-induced mucosal cell apoptosis while retaining its anti-inflammatory effects.
·link.springer.com·
Co-lyophilized Aspirin with Trehalose Causes Less Injury to Human Gast (...)
Differentiation of HT-29 human colonic adenocarcinoma cells correlates (...)
Differentiation of HT-29 human colonic adenocarcinoma cells correlates (...)
The HT-29 human adenocarcinoma cell line has been used extensively in the study of colonic cell differentiation and colon cancer. We report here that substitution of glucose with trehalose (alpha-D-glucopyranosyl-alpha-D-glucopyranoside) depresses growth and promotes mucin-producing, goblet-like mat …
·ncbi.nlm.nih.gov·
Differentiation of HT-29 human colonic adenocarcinoma cells correlates (...)
Marine Drugs Free Full-Text Induction of p53-Independent Apoptosis a (...)
Marine Drugs Free Full-Text Induction of p53-Independent Apoptosis a (...)
It is well known that fucoidan, a natural sulfated polysaccharide present in various brown algae, mediates anticancer effects through the induction of cell cycle arrest and apoptosis. Nevertheless, the role of tumor suppressor p53 in the mechanism action of fucoidan remains unclear. Here, we investigated the anticancer effect of fucoidan on two p53 isogenic HCT116 (p53+/+ and p53−/−) cell lines. Our results showed that inhibition of cell viability, induction of apoptosis and DNA damage by treatment with fucoidan were similar in two cell lines. Flow cytometric analysis revealed that fucoidan resulted in G1 arrest in the cell cycle progression, which correlated with the inhibition of phosphorylation of retinoblastoma protein (pRB) and concomitant association of pRB with the transcription factor E2Fs. Furthermore, treatment with fucoidan obviously upregulated the expression of cyclin-dependent kinase (CDK) inhibitors, such as p21WAF1/CIP1 and p27KIP1, which was paralleled by an enhanced binding with CDK2 and CDK4. These events also commonly occurred in both cell lines, suggesting that fucoidan triggered G1 arrest and apoptosis in HCT116 cells by a p53-independent mechanism. Thus, given that most tumors exhibit functional p53 inactivation, fucoidan could be a possible therapeutic option for cancer treatment regardless of the p53 status.
·mdpi.com·
Marine Drugs Free Full-Text Induction of p53-Independent Apoptosis a (...)
Marine Drugs Free Full-Text Investigation of Different Molecular Weight Fucoidan Fractions Derived from New Zealand Undaria pinnatifida Therapy in Prostate Cancer Cell
Marine Drugs Free Full-Text Investigation of Different Molecular Weight Fucoidan Fractions Derived from New Zealand Undaria pinnatifida Therapy in Prostate Cancer Cell
Fucoidan, a sulfated polysaccharide extracted from brown seaweeds, has been shown to possess various antioxidant, anticoagulant, antiviral, and anticancer functions. In this study, we focused on low molecular weight fucoidan (LMWF) which was extracted from New Zealand Undaria pinnatifida, and investigated its anti-proliferative effects, combined with a quadruplex-forming oligonucleotide aptamer (GroA, AS1411), a powerful cell surface Nucleolin inhibitor, in prostate cancer cells. We examined LMWF (
·mdpi.com·
Marine Drugs Free Full-Text Investigation of Different Molecular Weight Fucoidan Fractions Derived from New Zealand Undaria pinnatifida Therapy in Prostate Cancer Cell
Marine Drugs Free Full-Text Micro RNA Expression after Ingestion of Fucoidan; A Clinical Study
Marine Drugs Free Full-Text Micro RNA Expression after Ingestion of Fucoidan; A Clinical Study
Fucoidans are a class of fucose-rich sulfated polysaccharides derived from brown macroalgae that exert a range of biological activities in vitro and in vivo. To generate an unbiased assessment of pathways and processes affected by fucoidan, a placebo-controlled double-blind pilot study was performed in healthy volunteers. Blood samples were taken immediately before and 24 h after ingestion of a single dose of 1 g of Undaria pinnatifida fucoidan (UPF) or placebo. Levels of isolated miRNAs were analyzed using Taqman Open Array Human MicroRNA panels. Out of 754 miRNAs screened, UPF affected a total of 53 miRNAs. Pathway analysis using the TALOS data analysis tool predicted 29 different pathways and processes that were largely grouped into cell surface receptor signaling, cancer-related pathways, the majority of which were previously associated with fucoidans. However, this analysis also identified nine pathways and processes that have not been associated with fucoidans before. Overall, this study illustrates that even a single dose of fucoidans has the potential to affect the expression of genes related to fundamental cellular processes. Moreover, it confirms previous data that fucoidans influence immunity, cancer cells, inflammation, and neurological function.
·mdpi.com·
Marine Drugs Free Full-Text Micro RNA Expression after Ingestion of Fucoidan; A Clinical Study
Gum Acacia and Studies the Resistance to Oxidation and the Changes Phases against the Characteristics of Physicochemical Aloe vera Gel
Gum Acacia and Studies the Resistance to Oxidation and the Changes Phases against the Characteristics of Physicochemical Aloe vera Gel
Aloe vera gel is a potential material as raw material industry, this is because a very complex composition. However Aloe vera gel is very easily oxidized or unstable. Viscosity gel and the benefit are decreased at room temperature after 24-36 hours. This research aims to obtain information about the resistance to oxidation via nitogren gas treatment and antioxidants, as well as the influence of phase changes in an attempt to retain the characteristics of the physicochemical Aloe vera gel over time. This Study can be described a conclusion that the best storage conditions are sound-proofed temperature conditions (4 ± 1)oc. Environmental conditioning by administering nitrogen gas storage and antioxidant Buthylated Hydroxytoluene (BHT) 750 ppm for 4 weeks defending the nature physicochemical Aloe vera gel. Freeze drying process of Aloe vera gel that has filled gum Arabic 3 % generates a more homogenous powder and smaller and more.
·repository.warmadewa.ac.id·
Gum Acacia and Studies the Resistance to Oxidation and the Changes Phases against the Characteristics of Physicochemical Aloe vera Gel
Marine Drugs Free Full-Text Oral Fucoidan Attenuates Lung Pathology and Clinical Signs in a Severe Influenza A Mouse Model
Marine Drugs Free Full-Text Oral Fucoidan Attenuates Lung Pathology and Clinical Signs in a Severe Influenza A Mouse Model
Fucoidans are known to be effective inhibitors of inflammation, and of virus binding and cellular entry. Undaria pinnatifida-derived fucoidan (UPF) was assessed in a severe influenza A (H1N1, PR8) infection model in mice. Initially, UPF was gavaged at 3.52 mg daily in a treatment model. Gross lung pathology (consolidation) was significantly reduced as compared to controls. UPF was then presented as a feed supplement at a rate of either nil, 3.52 mg/day or 7.04 mg/day in a prophylactic model, dosed three days before infection. A significant improvement was observed in the clinical signs of ill-health, as well as a reduction in gross lung pathology in animals treated with the higher dose, although there was no significant reduction in lung viral titres.
·mdpi.com·
Marine Drugs Free Full-Text Oral Fucoidan Attenuates Lung Pathology and Clinical Signs in a Severe Influenza A Mouse Model
Role of trehalose on antioxidant defense system and some osmolytes of quinoa plants under water deficit SpringerLink
Role of trehalose on antioxidant defense system and some osmolytes of quinoa plants under water deficit SpringerLink
Background For scavenging reactive oxygen species, plant possess effective system that protect them from destructive oxidative reaction. Parts of this system as osmoprotectants and antioxidative enzymes are key elements in the defense mechanisms. A field experiment was conducted to evaluate the potential of foliar treatment of trehalose (Tre) with different concentrations (0, 0.1 mM, or 0.5 mM) in improving antioxidant defense system of quinoa plant under normal irrigation and drought stress conditions. Results Drought stress caused significant increases in some osmoprotectants as glucose, trehalose, TSS, free amino acids, and proline. Meanwhile, trehalose foliar treatment with different concentrations significantly decreases in free amino acids and proline contents. More accumulation of the tested organic solutes of leaves (glucose, sucrose, trehalose, TSS) of the trehalose-treated plant in both normal irrigated and drought-stressed quinoa plants as compared with the corresponding controls. Treating quinoa plants with trehalose resulted in significant decrease in lipid peroxidation, hydrogen peroxide contents, and LOX activity in normal irrigated and drought-stressed plants. These decreases correlated with significant increases in total phenolic contents as compared with untreated control. Different concentrations of trehalose resulted in significant increases in antioxidant enzymes. Maximum increase antioxidant enzymes were observed by treating plants Tre at 0.5 mM either under normal irrigation or drought conditions. Conclusion It could be concluded that foliar spray of trehalose was effective in improving quinoa performance by reducing hydrogen peroxide free radical and by enhancing antioxidant compounds (phenolics), compatible osmolytes, membrane stability, and antioxidant enzymes.
·link.springer.com·
Role of trehalose on antioxidant defense system and some osmolytes of quinoa plants under water deficit SpringerLink
Marine Drugs Free Full-Text Pharmacokinetic and Tissue Distribution of Fucoidan from Fucus vesiculosus after Oral Administration to Rats HTML
Marine Drugs Free Full-Text Pharmacokinetic and Tissue Distribution of Fucoidan from Fucus vesiculosus after Oral Administration to Rats HTML
Fucus vesiculosus L., known as bladderwrack, belongs to the brown seaweeds, which are widely distributed throughout northern Russia, Atlantic shores of Europe, the Baltic Sea, Greenland, the Azores, the Canary Islands, and shores of the Pacific Ocean. Fucoidan is a major fucose-rich sulfated polysaccharide found in Fucus (F.) vesiculosus. The pharmacokinetic profiling of active compounds is essential for drug development and approval. The aim of the study was to evaluate the pharmacokinetics and tissue distribution of fucoidan in rats after a single-dose oral administration. Fucoidan was isolated from F. vesiculosus. The method of measuring anti-activated factor X (anti-Xa) activity by amidolytic assay was used to analyze the plasma and tissue concentrations of fucoidan. The tissue distribution of fucoidan after intragastric administration to the rats was characterized, and it exhibited considerable heterogeneity. Fucoidan preferentially accumulates in the kidneys (AUC0–t = 10.74 µg·h/g; Cmax = 1.23 µg/g after 5 h), spleen (AUC0–t = 6.89 µg·h/g; Cmax = 0.78 µg/g after 3 h), and liver (AUC0–t = 3.26 µg·h/g; Cmax = 0.53 µg/g after 2 h) and shows a relatively long absorption time and extended circulation in the blood, with a mean residence time (MRT) = 6.79 h. The outcome of this study provides additional scientific data for traditional use of fucoidan-containing plants and offers tangible support for the continued development of new effective pharmaceuticals using fucoidan.
·mdpi.com·
Marine Drugs Free Full-Text Pharmacokinetic and Tissue Distribution of Fucoidan from Fucus vesiculosus after Oral Administration to Rats HTML
Marine Drugs Free Full-Text Potential Beneficial Actions of Fucoidan in Brain and Liver Injury, Disease, and Intoxication—Potential Implication of Sirtuins
Marine Drugs Free Full-Text Potential Beneficial Actions of Fucoidan in Brain and Liver Injury, Disease, and Intoxication—Potential Implication of Sirtuins
Increased interest in natural antioxidants has brought to light the fucoidans (sulfated polysaccharides present in brown marine algae) as highly valued nutrients as well as effective and safe therapeutics against several diseases. Based on their satisfactory in vitro antioxidant potency, researchers have identified this molecule as an efficient remedy for neuropathological as well as metabolic disorders. Some of this therapeutic activity is accomplished by upregulation of cytoprotective molecular pathways capable of restoring the enzymatic antioxidant activity and normal mitochondrial functions. Sirtuin-3 has been discovered as a key player for achieving the neuroprotective role of fucoidan by managing these pathways, whose ultimate goal is retrieving the entirety of the antioxidant response and preventing apoptosis of neurons, thereby averting neurodegeneration and brain injuries. Another pathway whereby fucoidan exerts neuroprotective capabilities is by interactions with P-selectin on endothelial cells, thereby preventing macrophages from entering the brain proper. Furthermore, beneficial influences of fucoidan have been established in hepatocytes after xenobiotic induced liver injury by decreasing transaminase leakage and autophagy as well as obtaining optimal levels of intracellular fiber, which ultimately prevents fibrosis. The hepatoprotective role of this marine polysaccharide also includes a sirtuin, namely sirtuin-1 overexpression, which alleviates obesity and insulin resistance through suppression of hyperglycemia, reducing inflammation and stimulation of enzymatic antioxidant response. While fucoidan is very effective in animal models for brain injury and neuronal degeneration, in general, it is accepted that fucoidan shows somewhat limited potency in liver. Thus far, it has been used in large doses for treatment of acute liver injuries. Thus, it appears that further optimization of fucoidan derivatives may establish enhanced versatility for treatments of various disorders, in addition to brain injury and disease.
·mdpi.com·
Marine Drugs Free Full-Text Potential Beneficial Actions of Fucoidan in Brain and Liver Injury, Disease, and Intoxication—Potential Implication of Sirtuins