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Pagina 1 a partire dal 53 risultati
A Novel Rhamnose-Rich Hetero-exopolysaccharide Isolated from Lactobacillus paracasei DG Activates THP-1 Human Monocytic Cells.
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Lactobacillus paracasei DG is a bacterial strain with recognized probiotic properties and is used in commercial probiotic products. However, the mechanisms underlying its probiotic properties are mainly unknown. In this study, we tested the hypothesis that the ability of strain DG to interact with
The role of small intestinal bacterial overgrowth, intestinal permeability, endotoxaemia, and tumour necrosis factor alpha in the pathogenesis of non-alcoholic steatohepatitis.
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BACKGROUND
Small intestinal bacterial overgrowth may contribute to the development of non-alcoholic steatohepatitis, perhaps by increasing intestinal permeability and promoting the absorption of endotoxin or other enteric bacterial products.
OBJECTIVE
To investigate the prevalence of small
Insertional inactivation of pac and rmlB genes reduces the release of tumor necrosis factor alpha, interleukin-6, and interleukin-8 induced by Streptococcus mutans in monocytic, dental pulp, and periodontal ligament cells.
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Streptococcus mutans possesses different cell wall molecules, such as protein of the I/II family, the serotype f polysaccharide rhamnose glucose polymer (RGP), and lipoteichoic acid (LTA), which act as adhesins and modulins, allowing S. mutans to colonize teeth and cause dental caries and pulpitis.
[Catfish (Silurus asotus) lectin enhances the cytotoxic effects of doxorubicin].
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Rhamnose-binding lectins are widely found in fish eggs. However, their biologic effects on cultured cells are still unknown. Since catfish (Silurus asotus) egg lectin (SAL) bound to globotriaosylceramide (Gb3) expressed on the surface of cells, we analyzed the relationship between Gb3 expression and
Splenectomy attenuates streptococcal cell wall-induced arthritis and alters leukocyte activation.
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OBJECTIVE
To investigate the role of the spleen in the pathogenesis of streptococcal cell wall (SCW)-induced arthritis and determine the impact of splenectomy on monocytes and T cells involved in the arthritis.
METHODS
Female Lewis rats were separated into 4 groups: 1) saline-injected,
Purification and characterization of a novel small-molecule polysaccharide from the Maitake medicinal mushroom Grifola frondosa (higher Basidiomycetes).
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A novel small-molecule polysaccharide with a molecular mass of 2.6 kDa, was isolated from the culinary-medicinal Maitake mushroom Grifola frondosa. GFPS is composed of fucose, rhamnose, galactose, glucose, and mannose; galactose, glucose, and mannose were the dominant monosaccharides. Absorption
Characterization and macrophage immunomodulatory activity of two polysaccharides from the flowers of Paeonia suffruticosa Andr.
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Paeonia suffruticosa Andr. has a long history of cultivation in China and its flower possesses high nutritional and medicinal value. Characterization and macrophage immunomodulatory activity of the two polysaccharides from the flowers of Paeonia suffruticosa Andr., PSAP-1 and PSAP-2, purified by
Rhamnan sulfate extracted from Monostroma nitidum attenuates blood coagulation and inflammation of vascular endothelial cells.
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Rhamnan sulfate (RS) is a polysaccharide with a rhamnose backbone isolated from Monostroma nitidum. Like heparin, it exerts anticoagulant activity in the presence of antithrombin. Endothelial cells facilitate the crosstalk between blood coagulation and vascular inflammation. In this study, we
Intestinal permeability in newborns with necrotizing enterocolitis and controls: Does the sugar absorption test provide guidelines for the time to (re-)introduce enteral nutrition?
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BACKGROUND
In necrotizing enterocolitis (NEC), (sub)mucosal edema, hemorrhage, ulceration, or necrosis will disturb intestinal integrity, as reflected by an increased intestinal permeability. Enteral substrate is therefore withheld for a variable period up to 3 weeks (in many clinics). The authors
Characterization and Immunological Activities of Polysaccharides from Polygonatum sibiricum
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In this study, we investigated the physicochemical properties and composition of monosaccharidex from Polygonatum sibiricum. Simultaneously, we explored the in vivo and in vitro immunomodulatory activity and mechanism of Polygonatum sibiricum polysaccharide (PSP) activity by monitoring changes in
In vitro antioxidant and immunostimulating activities of polysaccharides from Ginkgo biloba leaves.
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Ginkgo biloba leaves (GBLs) are used as herbal dietary supplements and medicine worldwide. In this study, crude GBL polysaccharides (GBPSs) were extracted and further purified on a DEAE (diethylaminoethanol) Sepharose Fast Flow column to obtain GBPS-2 and GBPS-3. The molecular weights of GBPS-2 and
Exopolysaccharide-overproducing Lactobacillus paracasei KB28 induces cytokines in mouse peritoneal macrophages via modulation of NF-κβ and MAPKs.
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Exopolysaccharides (EPSs) are microbial polysaccharides that are released outside of the bacterial cell wall. There have been few studies on EPS-producing lactic acid bacteria that can enhance macrophage activity and the underlying signaling mechanism for cytokine expression. In the current study,
Structural and immunological feature of rhamnogalacturonan I-rich polysaccharide from Korean persimmon vinegar.
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The crude polysaccharide (KPV-0) isolated from Korean persimmon vinegar was fractionated using gel filtration chromatography to enhance the immunostimulatory activity and to identify the structural features of active fraction. Among three fractions, KPV-I obtained in a void volume, demonstrated the
Chemical characterization and biologic properties of lipopolysaccharide from Bacteroides gingivalis strains W50, W83, and ATCC 33277.
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The chemistry and selected biological activity of lipopolysaccharide (LPS) from Bacteroides gingivalis strains W50, W83, and ATCC 33277 were compared, as well as the role of this molecule as a mediator of selected inflammatory responses. Chemically, the LPSs consisted of 47-58% Lipid A, 5-10%
Biological activities of leptospiral lipopolysaccharide.
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Lipopolysaccharide extracted with phenol-water from Leptospira interrogans serovar copenhageni strain Shibaura (L-LPS) showed various biological activities. In lethality for mice, L-LPS was active (LD 50, 3.4 mg/mouse) but about 12 times less potent than Escherichia coli LPS (E-LPS) per weight
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