Seaweeds for Fighting Cancer Journal of Plant Medicines
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Long Period Starvation in Rat The Effect of Aloe Vera Gel Extract on O (...)
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
Secondary metabolites of Galactomyces geotrichum from Laminaria japonica ameliorate cognitive deficits and brain oxidative stress
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Protein Immobilization Capabilities of Sucrose and Trehalose Glasses T (...)
Disaccharide glasses are increasingly used to immobilize proteins at room temperature for structural/functional studies and long-term preservation. To unravel the molecular basis of protein immobilization, we studied the effect of sugar/protein concentration ratios in trehalose or sucrose matrixes, in which the bacterial photosynthetic reaction center (RC) was embedded as a model protein. The structural, dynamical, and H-bonding characteristics of the sugar–protein systems were probed by high-field W-band EPR of a matrix-dissolved nitroxide radical. We discovered that RC immobilization and thermal stabilization, being independent of the protein concentration in trehalose, occur in sucrose only at sufficiently low sugar/protein ratios. EPR reveals that only under such conditions does sucrose form a microscopically homogeneous matrix that immobilizes, via H-bonds, the nitroxide probe. We conclude that the protein immobilization capability depends critically on the propensity of the glass-forming sugar to create intermolecular H-bond networks, thus establishing long-range, homogeneous connectivity within the matrix.
Silencing Prion Protein in HT29 Human Colorectal Cancer Cells Enhances (...)
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.
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Specificity of alginate from Laminaria japonica use in Bacteroides species determined its modulation on the Bacteroides community - Food & Function (RSC Publishing)
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 and Probiotics in Treatment of Chronic Periodontitis Patients
Rates of Spontaneous Cleavage of Glucose, Fructose, Sucrose, and Treha (...)
The half-lives for spontaneous hydrolysis of trehalose and sucrose at 25 °C are 6.6 × 10[6] years and 440 years. The half-lives for decomposition of the hydrolysis products glucose and fructose are 96 years and 70 days, respectively. ...
Correlation of Gum Acacia with Serum Electrolytes among Patients with (...)
Stability-keeping effects of proteins and anti-oxidation-rancidity of (...)
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Mannose Foraging by Bacteroides thetaiotaomicron
The human colonic bacterium Bacteroides thetaiotaomicron, which plays an important role in maintaining human health, produces an extensive array of exo-acting glycoside hydrolases (GH), including 32 family GH2 glycoside hydrolases. Although it is likely that these enzymes enable the organism to utilize dietary and host glycans as major nutrient sources, the biochemical properties of these GH2 glycoside hydrolases are currently unclear. Here we report the biochemical properties and crystal structure of the GH2 B.
Stimulatory effect of an algal fucoidan on the release of va... Blood (...)
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.
Aloe vera at the frontier of glycobiology and integrative medicine Health implications of an ancient plant - Peter Pressman, Roger Clemens, A Wallace Hayes, 2019
Aloe vera plant extracts are ubiquitous in foods, cosmetics, and medicine. Like all plants, these extracts contain an array of potential bioactives or glycans, ...
Tagatose as a Potential Nutraceutical Production, Properties, Biological Roles, and Applications - Roy - - Journal of Food Science - Wiley Online Library
Nutraceuticals are gaining importance owing to their potential applications in numerous sectors including food and feed industries. Among the emerging nutraceuticals, d-tagatose occupies a significan...
trehalose is commonly considered to stimulate autophagy - Startpage We (...)
Structural Characteristics and Antioxidant Activities of Fucoidans fro (...)
Five kinds of fucoidans from the brown seaweeds Cladosiphon okamuranus, Sargassum hornery, Kjellmaniella crassifolia (Saccharine sculpera), Nemacystus …
Metabolomic profiling of cancer cells to Aloe vera extract by HNMR spe (...)
Introduction Aloe Vera is a plant that belongs to the Aasphodelacea (Liliaceae) family has been used as an herbal medicine for centuries. It is native to Africa and many Mediterranean countries and is used for several healing purposes, like treating various skin disorders such as abcesses, burns and eczema. Its juice
Structure characterization and antioxidant activity of fucoidan isolated from Undaria pinnatifida grown in New Zealand - ScienceDirect
Fucoidan from brown seaweed species, Undaria pinnatifida, has numerous bioactive properties such as antioxidant and anticancer activities. The objecti…
Studies on Antiviral and Immuno-Regulation Activity of Low Molecular Weight Fucoidan from Laminaria japonica SpringerLink
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.
MICROPROPAGATION AND ELICITATION STUDIES IN ALOE VERA
ABSTRACT Objective: Micropropagation and elicitation studies of Aloe vera Methods: Standardisation of the regeneration protocol was done by using Murashige and Skoog (MS) media in combination with various plant growth regulators and elicitation studies were carried out by means of abiotic elicitors (salicylic acid, fructose and sodium chloride). Results: Direct regeneration through shoot tip gave the best response (0.2 mg/l Indole Butyric Acid (IBA) + 0.2mg/l 6-Benzylaminopurine (BAP)). Salicylic acid proved to be an effective abiotic elicitor, for suspension cultures of in vitro grown callus and also in vivo. It increased the content of polysaccharides, up to 7 times and phenolic compounds to almost 10 folds compared to untreated control kept under similar conditions. Conclusion: This study will make a path for the genetic transformation and metabolite enhancement along with their regulation, which can prove to be an asset towards pharmaceutical industry. Keywords: Aloe vera, Succulent plant, Micropropagation, Elicitation, Callus, Explant.
Study on branched structure-physiological activity relationship of fuc (...)
Cytotoxicity for cancer cells of fucoidans isolated from 6 brown seaweed species were investigated. All fucoidans showed cytotoxic activity against th …
The 25(OH)Vitamin D Status Affected the Effectiveness of Oligo Fucoidan in Patients With Chronic Hepatitis B Virus Infection With Immune Tolerance Phase - PubMed
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 …
Mode of pP38 and Nf-kß Signalling Pathway on Induction of Apoptosis in Response to Flavonoids of Aloe Vera in Glioblastoma
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The anti-cancer effects of fucoidan a review of both in vivo and in vitro investigations Cancer Cell International Full Text
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 effect of algal polysaccharides laminarin and fucoidan on colonic (...)
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 ...
Molecular Docking Studies of Phytocompounds from Aloe Vera (L.) Burm. (...)
Biosciences, Biotechnology Research Asia is an international, open access, peer reviewed research journal covering all aspects of Biosciences and Biotechnology field.
The effect of fucoidan on intestinal flora and intestinal barrier func (...)
Recent research studies have shown that the intestinal flora are related to the occurrence and progress of breast cancer. This study investigates the effect of fucoidan on intestinal flora and intestinal barrier function in rats with 7,12-dimethylbenz[a]anthracene (DMBA)-induced breast cancers. Sixty female
Trehalose itself plays a critical role on lipid metabolism
Background Trehalose is a functional disaccharide that has anti-metabolic activities such as suppression of adipocyte hypertrophy in mice and alleviation of impaired glucose tolerance in humans. Trehalase hydrolyzes trehalose in the small intestine into two glucose molecules. In this study, we investigated whether trehalose can suppress adipocyte hypertrophy in mice in the presence or absence of trehalase. Methods Trehalase knockout (KO) mice and wild-type (WT) mice were fed a high fat diet (HFD) and administered water with 0.3% (w/v) or without trehalose for 8 weeks. At the end of the experimental period, mesenteric adipose tissues and the small intestine were collected and the adipocyte size and proportion of cytoplasmic lipid droplets (CLDs, %) in jejunum epithelium were measured by image analysis. Results Trehalose treatment was associated with suppressed adipocyte hypertrophy in both trehalase KO and WT mice. The rate of CLDs in the jejunal epithelium was increased in both trehalase KO and WT mice given water containing trehalose relative to untreated control mice. There was a negative correlation between jejunal epithelial lipid droplet volume and mesenteric adipocyte size. Chylomicron-TG tended to be decreased in both trehalose-treated trehalase KO and WT mice. Addition of trehalose to differentiated Caco-2 cells in vitro increased intracytoplasmic lipid droplets and decreased secretion of the chylomicron marker ApoB-48. Moreover, the jejunal epithelium containing lipid droplets falled into the intestinal lumen, and triglyceride (TG) levels in feces tended to be higher in the KO/HFD/Tre group than in the KO/HFD/Water group. Since then, the accumulation of CLDs has been reported to suppress CM secretion, and along with our results, the effect of trehalose to increase jejunum CLDs may induce suppression of adipocyte hypertrophy. Conclusions The suppression of adipocyte hypertrophy in the presence and absence of trehalase indicates that trehalose mediates effects prior to being hydrolyzed into glucose. In both trehalase KO and WT mice, trehalose treatment increased the rate of CLDs in jejunal epithelium, reduced chylomicron migration from the intestinal epithelium to the periphery, and suppressed adipocyte hypertrophy. Thus, trehalose ingestion could prevent metabolic syndrome by trapping fat droplets in the intestinal epithelium and suppressing rapid increases in chylomicrons.