Glyconutrients

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UWill Discover 2018 Abstract Asma Ghafoor, Iraj Sadraei, John F. Trant Towards the synthesis of an acetal-free TF antigen from glucosamine Carbohydrates make up many of the key molecules in our body, especially those involved in signaling, and these systems are of growing interest in regard to better understanding and treating diseases. Carbohydrates are increasingly being found to play an important role in the immunogenic responses to different microbial infections and even to cancer. In terms of cancers, certain carbohydrates have been found to be expressed only on the surface of carcinomas: they are not found on healthy cells. The TF antigen, a simple disaccharide, is one such marker and is found on >85% of all carcinomas regardless of organ (ie breast, ovarian, cervical, prostate, lung, liver etc.); however, the immune system is not good at identifying carbohydrates. Consequently, we need to design new synthetic vaccines to draw attention to these targets so that the body can initiate an immune response to kill the cancer., Unfortunately, the highly biodegradable nature of carbohydrates, when exposed to various pH conditions and enzymes in the body, make it difficult to use carbohydrates in vivo. As a result, extensive and complex syntheses must be carried out to create disaccharides with better enzymatic resistance, so that they can exist long enough to initiate the immune response. The Trant Team hopes to create more stable carbohydrates by removing the unstable acetal group by replacing the exo-cyclic oxygen with a methylene group; this class of materials are known as C-glycosides. This presentation will explore our approach of using glucosamine as a starting product to produce this challenging target, and describe the potential application of this technology towards cancer therapy.

N-acetylglucosamine, a simple sugar found in human breast milk and sold as an over-the-counter dietary supplement in the United States, promotes myelin repair in mouse models and correlates with myelination levels in multiple sclerosis patients, according to a new study.

BACKGROUND Previous studies indicated that both Plantago major and Aloe vera have anti-inflammatory, tissue regeneration, antioxidant, and immune-stimulatory effects. It is assumed that a mixture of these two herbal medicines may provide a potent material in treatment of skin wound injuries. Therefore, in this study we investigated the effects of Plantago major ...

The aim of current study is detect the activity role of Aloe vera and Opuntia ficus extract against certain pathogenic bacteria and evaluation of Aloe vera and O. ficus extract against certain pathogenic bacteria inhibition in vitro. 100 samples were obtained from patients with different diseases at age 6 Mon. to 65 years from both genders. This study was carried out in Lab. of Biology Dept., Science College/Tikrit University, at the period from 1st of June 2019 to end of January 2020. The antimicrobial activity was performed with the agar well diffusion method. The results show the ability of Aloe vera for inhibition of bacteria according on concentration and the concentrations of 100 was caused in inhibitory effect on E. coli, Acinetobacte, S. aureus, S. epidermidis and S. haemolyticus isolates at diameter 13, 12, 11, 9.8 and 15 mm respectively. While, Opuntia ficus extract at 100% concentration was caused in inhibitory effect bacteria isolates at diameter 10, 9.7, 8.2, 7 and 12 mm respectively. The results also show Aloe vera was found to be able for inhibition of bacteria concentration of 40% was caused in inhibitory effect on E. coli, Acinetobacte, S. aureus, S. epidermidis and S. haemolyticus isolates at diameter 14, 12, 11, 9 and 15 mm respectively. While, Opuntia ficus extract at 40% concentration was caused in inhibitory effect bacteria isolates at diameter 11, 10, 8, 7 and 13 mm respectively, while other concentrations 10%, 20, 30% show less inhibitory effect compare with 100% and 40% concentrations

As glucosamine is presently in wide use due to its purported beneficial effects in patients with osteoarthritis, it seemed important to consider its possible adverse effects on glucose metabolism. Many subjects who take glucosamine for osteoarthritis are obese, insulin resistant, diabetic, or at risk for the development of diabetes, and it is established that glucosamine induces insulin resistance in rats and mice. Hypotheses suggest that glucosamine causes insulin resistance by directly entering the hexosamine biosynthetic pathway. It has been proposed that this provides a model for glucotoxicity-induced defects in insulin action and secretion (1), since, under hyperglycemic conditions, a larger amount of glucose flux is metabolized through the hexosamine pathway. Therefore, we undertook this study to determine if glucosamine, taken at recommended doses for the treatment of osteoarthritis, had any detrimental …

Introduction: Since aloe vera plant has many medical benefits, the present study aimed to investigate the protective effects of Aloe vera gel on the pancreatic islets and beta cells. Methods: This experimental study consisted of 50 mature male rats aged 2-3 months and weighed 200-250 g, who were randomly divided ...

Background: The putative functions of the cellular prion protein (PrPc) are believed to be associated with cell signaling, differentiation, survival, and cancer progression. With respect to cancer development and progression, elevations and mutations of PrPc expression have been shown to increase the risk for malignancy and metastasis in breast and colorectal cancer. Since both natural supplements and direct regulation of PrPc expression contribute to inhibition of cancer progression and growth, we hypothesized that knockdown of PrPc could lead to an enhanced synergic effect on the inhibition of cancer growth by fucoidan. Materials and Methods: PrPc expression was suppressed in HT29 human colon cancer cells by utilizing small-interfering RNA (si-PRNP), and cells were subsequently used to study the antiproliferative and anticancer effects of fucoidan treatment of HT29 human colon cancer cells. Results: Fucoidan treatment significantly inhibited growth and reduced cyclin and cyclin-dependent kinase (CDK) expression in HT29 colon cancer cells. Furthermore, silencing PrPc expression with si-PRNP amplified the fucoidan-induced changes in cell proliferation, apoptosis, and migration. Intraperitoneal injection of si-PRNP with fucoidan reduced proliferation and tumor volume in Balb/c nude mice. This enhanced antitumor efficacy was associated with decreased angiogenesis. Conclusion: Combination of fucoidan with silencing of PrPc has a synergic effect on the inhibition of HT29 colon cancer cell growth. Furthermore, we provide evidence for the therapeutic application of PrPc silencing with other anticancer drugs for cancer.

Study Design: This is an experimental study using an animal model. Objectives: Disk degeneration is a common cause of low back pain. However, few attempts have ...

Accumulating studies showed that the beneficial actions of polysaccharides were closely associated with an improvement of the gut microbiota, but mechanisms that link polysaccharides and gut microbiota alterations are ill defined. Alginate from Laminaria japonica (LJP-A) can avoid being digested by the upper

Aloe vera, a succulent perennial and drought resisting plant, is well known for its therapeutic potential. A number of beneficial effects of Aloe vera…

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The co-administration of absorption enhancing agents with macromolecular drugs (e.g., protein and peptide drugs) has been identified as a means to improve the oral bioavailability of these drugs. Absorption-enhancing agents of natural origins have received ...

Blood Coagulation & Fibrinolysis is an international fully refereed journal that features review and original research articles on all clinical, laboratory and experimental aspects of haemostasis and thrombosis. The journal is devoted to publishing significant developments worldwide in the field of blood coagulation, fibrinolysis, thrombosis, platelets and the kininogen-kinin system, as well as dealing with those aspects of blood rheology relevant to haemostasis and the effects of drugs on haemostatic components.

Five kinds of fucoidans from the brown seaweeds Cladosiphon okamuranus, Sargassum hornery, Kjellmaniella crassifolia (Saccharine sculpera), Nemacystus …

. J Neurogastroenterol Motil 1970;0:. https://doi.org/

Fucoidan from brown seaweed species, Undaria pinnatifida, has numerous bioactive properties such as antioxidant and anticancer activities. The objecti…

The antiviral activity in vitro and in vivo and the effect of the immune system of two fucoidan fractions with low molecular weight and different sulfate content from Laminaria japonica (LMW fucoidans) were investigated in order to examine the possible mechanism. In vitro, I-type influenza virus, adenovirus and Parainfluenza virus I were used to infect Hep-2, Hela and MDCK cells, respectively. And 50% tissue culture infective dose was calculated to detect the antiviral activity of two LMW fucoidans. The results indicated that compared with the control group, 2 kinds of LMW fucoidans had remarkable antiviral activity in vitro in middle and high doses, while at low doses, the antiviral activity of 2 kinds of LMW fucoidans was not statistically different from that in the blank control group. And there was no statistically difference between two LMW fucoidans in antiviral activity. In vivo, LMW fucoidans could prolong the survival time of virus-infected mice, and could improve the lung index of virus-infected mice significantly, which have statistical differences with the control group significantly (p < 0.01). However, the survival time of the two LMW fucoidans was not statistically significant (p > 0.05). In this study, it was shown that both of two LMW fucoidans (LF1, LF2) could increase the thymus index, spleen index, phagocytic index, phagocytosis coefficient and half hemolysin value in middle and high doses, which suggested that LMW fucoidans could play an antiviral role by improving the quality of immune organs, improving immune cell phagocytosis and humoral immunity.

Aloe vera (Aloe barbadensis Miller) is a perennial succulent medicinal plant. It has been used as a traditional or folk medicine for thousands of year…

Cytotoxicity for cancer cells of fucoidans isolated from 6 brown seaweed species were investigated. All fucoidans showed cytotoxic activity against th …

Chronic hepatitis B virus (HBV) infection is a serious public health issue. Vitamin D is involved in various pathophysiological mechanisms as an immune modulator and the deficiency rate of vitamin D is prevalent in chronic liver disease. Fucoidan exerts anti-inflammatory, anticoagulant, antitumor, a …

Objective: Starvation have pro-oxidative effect as a consequence of both elevated ROS generation and defeat in neutralization of ROS. Aloe vera juice induced oxidative stress and significantly decreased antioxidant enzymes levels. The main aim of this experiment was to evaluate the effect of Aloe vera gel extract on oxidative stress status during long period starvationMethod: Twenty-four mature male albino Wistar rats were housed in standard cages. In this study starvation cycle (rats were starved for two days and then were fed for one day) was used. This study was performed during intermediate period (60 days).Animals were divided into four experimental groups (six rats in each group): 1) normal control; 2) starved rats + water/ethanol; 3) starved rats + hydro-alcoholic Aloe vera gel extract (100 mg/kg); 4) starved rats + hydro-alcoholic Aloe vera gel extract (200 mg/kg); 5) Without starvation with hydro-alcoholic Aloe Vera gel extract (100 mg/kg); 6) Without starvation with hydro-alcoholic Aloe Vera gel extract (200 mg/kg). Blood samples were obtained using cardiac puncture. In blood samples, antioxidant enzymes including SOD, GPx and catalase, antioxidant trace elements including copper, zinc and magnesium and antioxidant vitamins including vitamin A, vitamin E and vitamin C were measured Results: Plasma levels of antioxidant enzymes (SOD,GPX and catalase) significantly decreased in starved rats + water/ethanol group (P< 0.05). Plasma levels of antioxidant enzymes after treatment with hydro-alcoholic Aloe vera gel extract at doses 100 and 200 mg/kg were significantly increased (P < 0.05). Also, plasma levels of antioxidant enzymes in normal rats (without starvation) after treatment with hydro-alcoholic Aloe vera gel extract at doses 100 and 200 mg/kg were significantly increased (P < 0.05). Plasma levels of Cu, Zn and Mn in normal control group had no significant difference with starved rats + water/ethanol and starved rats + hydro-alcoholic Aloe vera gel extract in 100 and 200 mg/kg dose groups (P > 0.05). Plasma levels of vitamin A and E in normal control group had no significant difference with starved rats + water/ethanol and starved rats + hydro-alcoholic Aloe vera gel extract in the 100 and 200 mg/kg dose groups (P > 0.05). Plasma level of vitamin C significantly decreased in starved rats + water/ethanol group (P < 0.05). Plasma level of vitamin C after treatment with hydro-alcoholic Aloe vera gel extract at doses 100 and 200 mg/kg was significantly increased (P < 0.05). Also, plasma level of vitamin C in normal rats (without starvation)  after treatment with hydro-alcoholic Aloe vera gel extract at doses 100 and 200 mg/kg was significantly increased (P < 0.05)Conclusion:In concluding our results it is shown that intermediate period starvation caused  an increase in oxidative stress via impairing of antioxidant defense and Aloe vera treatment is able  to improve antioxidative defense induced by starvation

Fucoidan is a kind of the polysaccharide, which comes from brown algae and comprises of sulfated fucose residues. It has shown a large range of biological activities in basic researches, including many elements like anti-inflammatory, anti-cancer, anti-viral, anti-oxidation, anticoagulant, antithrombotic, anti-angiogenic and anti-Helicobacter pylori, etc. Cancer is a multifactorial disease of multiple causes. Most of the current chemotherapy drugs for cancer therapy are projected to eliminate the ordinary deregulation mechanisms in cancer cells. Plenty of wholesome tissues, however, are also influenced by these chemical cytotoxic effects. Existing researches have demonstrated that fucoidan can directly exert the anti-cancer actions through cell cycle arrest, induction of apoptosis, etc., and can also indirectly kill cancer cells by activating natural killer cells, macrophages, etc. Fucoidan is used as a new anti-tumor drug or as an adjuvant in combination with an anti-tumor drug because of its high biological activity, wide source, low resistance to drug resistance and low side effects. This paper reviews the mechanism by which fucoidan can eliminate tumor cells, delay tumor growth and synergize with anticancer chemotherapy drugs in vitro, in vivo and in clinical trials.

The algal polysaccharides laminarin (LAM) and fucoidan (FUC) have potent anti-inflammatory activities in the gastrointestinal tract. Our objective was to examine the impact of prior consumption of LAM and/or FUC on pathology and inflammation following ...