d glucuronic acid/cáncer

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Synthesis of some novel D-glucuronic acid acetylated derivatives as potential anti-tumor agents.

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A structurally diverse series of Δ(4,5) -uronamide derivatives have been chemically synthesized starting from D-glucuronic acid itself by means of acetylation, activation, amide bond formation and base-catalyzed elimination protocols. Structure elucidation for all products along with optimization of

gem-Diamine 1-N-iminosugars and related iminosugars, candidate of therapeutic agents for tumor metastasis.

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Cancer metastasis is one of the major challenges in cancer research. Inhibitors of tumor metastasis are rapidly emerging as important new drug candidates for cancer therapy. Tumor metastasis formation occurs via a complex multistage process which involves a crucial step of tumor invasion through the

ATIQCTPC: a nanomedicine capable of targeting tumor and blocking thrombosis in vivo.

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To overcome the harmful side effects, low tolerance, and undesirable outcomes of the anticancer drugs, we used ethane-1,2-diamine to bridge antitumoral (S)-3-acetyl-4-oxo-tetrahydroindolo[2,3-a]quinolizine-6-carboxylic acid (ATIQC) and tumor-targeting d-glucuronic acid, thereby providing

Further investigation of the modifying effect of various chemopreventive agents on apoptosis and cell proliferation in human colon cancer cells.

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OBJECTIVE Recent preclinical assays using animal models have shown that naturally-occurring and synthetic chemicals such as auraptene (AUR), nobiletin (NOB), hesperidin (HE), diosmin (DIO), indole-3-carbinol (I3C), 1'-acetoxychavicol acetate (ACA), 2,5-di-O-acetyl-D-1,4-glucaro-6,3-dilactone (ACE),

Application of the ADEPT strategy to the MDR resistance in cancer chemotherapy.

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New prodrugs consisting of a beta-D-glucuronic acid linked to a MDR reversal agent (verapamil, quinine or dipyridamole) through a self-immolative spacer were synthesized. Four of them were selected for their reduced cytoxicity and beta-glucuronidase enzymatic efficient hydrolysis. Combined use of

Modulation of biomarkers related to tumor initiation and promotion in mouse skin by a natural β-glucuronidase inhibitor and its precursors.

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Carcinogen-mediated labilization of lysosomal enzymes such as β-glucuronidase (βG) is often associated with the general process of inflammation. Therefore, the primary goal of this study was to demonstrate that exposing the skin of SENCAR mice to the natural βG inhibitor D-glucaro-1,4-lactone

Selectin blocking activity of a fucosylated chondroitin sulfate glycosaminoglycan from sea cucumber. Effect on tumor metastasis and neutrophil recruitment.

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Heparin is an excellent inhibitor of P- and L-selectin binding to the carbohydrate determinant, sialyl Lewis(x). As a consequence of its anti-selectin activity, heparin attenuates metastasis and inflammation. Here we show that fucosylated chondroitin sulfate (FucCS), a polysaccharide isolated from

Anti-inflammatory effects of low molecular weight heparin derivative in a rat model of carrageenan-induced pleurisy.

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Low molecular weight heparin derivatives are characterized by low anti-coagulant activity and marked anti-inflammatory effects that allow for these molecules to be viewed as a new class of non-steroidal anti-inflammatory drugs (NSAIDs). We show here that K5NOSepiLMW, an O-sulphated heparin-like

Tremella polysaccharide: The molecular mechanisms of its drug action.

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Tremella fuciformis is an edible medicinal mushroom well known as "Yiner" or "Baimuer" in China and has been used as a Chinese herb for many years. T. fuciformis polysaccharide (TFPS) has been identified as a major bioactive component. Different experimental conditions can obtain

Baicalin induces NAD(P)H:quinone reductase through the transactivation of AP-1 and NF-kappaB in Hepa 1c1c7 cells.

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Baicalin (5,6,7-trihydroxyflavone-7-O-D-glucuronic acid, BA) is a flavone isolated from Scutellariae radix. In our previous report BA was a major active principle of NAD(P)H:quinone reductase (QR) induction mediated by Scutellariae radix extract and the induction was related to the transcriptional

Cytokine gene expression and production by human LPS-stimulated mononuclear cells are inhibited by sulfated heparin-like semi-synthetic derivatives.

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BACKGROUND The K5 polysaccharide obtained from Escherichia coli strain 010:K5:H4 is a polymer of the disaccharidic unit formed by D-glucuronic acid and N-acetylglucosamine. This structure is akin to N-acetylheparosan, the precursory polymer of heparin and of heparan sulfate. This structural affinity

Expression of active human beta-glucuronidase in Sf9 cells infected with recombinant baculovirus.

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Antibody directed enzyme prodrug therapy (ADEPT) using glucuronide prodrugs is an experimental approach to reduce systemic toxicity of anti-cancer agents. Bioactivation of such prodrugs is achieved by fusion proteins consisting of targeting moieties (e.g. ligands of tumor specific antigens) and

[The biological role of D-glucaric acid and its derivatives: potential use in medicine].

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D-glucaric acid is a natural non-toxic compound produced in small amounts by mammals, including humans. In mammals, D-glucaric acid and D-glucaro-l,4-lactone are end-products of the D-glucuronic acid pathway. The enzyme D-glucuronolactone dehydrogenase has been found to be responsible for the

[Hyaluronic acid, receptor CD44, and their role in diabetic complications].

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Hyaluronic acid (HA) is a straight chain glycosaminoglycan polymer composed of repeating units of the disaccharide [-D-glucuronic acid-beta1,3-N-acetyl-D-glucosamine-beta1,4-]n, and is found in vertebrates and certain microorganisms. The molecular weight of HA chains is usually equal to

Baicalin provides neuroprotection in traumatic brain injury mice model through Akt/Nrf2 pathway.

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UNASSIGNED The neuroprotective effects of Baicalin have been confirmed in several central nervous system (CNS) diseases. However, its possible effect on traumatic brain injury (TBI) model is still not clear. The present study is aimed to investigate the role and the underling mechanisms of

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