cis resveratrol/cáncer

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Anti-tumor properties of cis-resveratrol methylated analogs in metastatic mouse melanoma cells.

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Resveratrol (E-3,5,4'-trihydroxystilbene) is a polyphenol found in red wine that has been shown to have multiple anti-cancer properties. Although cis-(Z)- and trans-(E)-isomers of resveratrol occur in nature, the cis form is not biologically active. However, methylation at key positions of the cis

Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures.

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Moderate consumption of wine is associated with a reduced risk of cancer. Grape plant cell cultures were used to purify 12 phenols: the stilbenoids trans-astringin, trans-piceid (2), trans-resveratroloside, trans-resveratrol, trans-piceatannol, cis-resveratroloside, cis-piceid, and cis-resveratrol;

cis-Resveratrol produces anti-inflammatory effects by inhibiting canonical and non-canonical inflammasomes in macrophages.

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Resveratrol, a natural phenolic compound found in red grapes and wine, exists as cis and trans isomers. Recent studies have shown that trans-resveratrol possesses anti-inflammatory, anti-oxidant, anti-carcinogenic, anti-tumor and immunomodulatory properties. However, it remains unclear whether

Concentrations of resveratrol and derivatives in foods and estimation of dietary intake in a Spanish population: European Prospective Investigation into Cancer and Nutrition (EPIC)-Spain cohort.

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Resveratrol has been shown to have beneficial effects on diseases related to oxidant and/or inflammatory processes and extends the lifespan of simple organisms including rodents. The objective of the present study was to estimate the dietary intake of resveratrol and piceid (R&P) present in foods,

Effect of cis-resveratrol on genes involved in nuclear factor kappa B signaling.

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This study investigated for the first time the effects of the cis isomer of RESV (c-RESV), a polyphenol present in red wine, on an array of genes whose expression is controlled by nuclear factor kappa B (NF-kappaB) and whose transcriptional activation is critical in a number of pathologies

Inhibition of DNA topoisomerases I and II of compounds from Reynoutria japonica.

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Three anthraquinones (1, 2 and 4), three stilbenes (5, 6 and 7) and 3,5-dihydroxybenzyl alcohol (3) were isolated from Reynoutria japonica. Their structures were identified as emodin (1), emodin-8-O-β-D-glucoside (2), 3,5-dihydroxybenzyl alcohol (3), citreorosein (4), cis-resveratrol (5),

alphavbeta3 Integrin-dependent antiangiogenic activity of resveratrol stereoisomers.

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Angiogenesis is target for antineoplastic and chemopreventive therapies. The natural phytoalexin resveratrol is found in grapes and red wine as cis and trans stereoisomers. trans-Resveratrol shows antiangiogenic activity, but its mechanism of action is not fully elucidated. Recently,

Identification of metabolic pattern and bioactive form of resveratrol in human medulloblastoma cells.

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Cancer preventive reagent trans-resveratrol is intracellularly biotransformed to different metabolites. However, it is still unclear whether trans-resveratrol exerts its biological effects directly or through its metabolite(s). This issue was addressed here by identifying the metabolic pattern and

Analysis of trans-resveratrol in grapes by micro-high performance liquid chromatography.

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Resveratrol, existing in two isomeric trans-and cis-forms, is a phytoalexin that has pharmacological activities, like anti-cancer and anti-cardiovascular diseases as well as life-span increasing properties. Grapes are good sources for resveratrol introduction in the human diet not only directly, but

[Studies on active substance of anticancer effect in Polygonum cuspidatum].

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OBJECTIVE To supply the scientific basis of research and development of the medicinal value of Polygonum cuspidatum. METHODS One composition was isolated from the roots of Polygonum cuspidatum by cytotoxicity based fractionation and identified by HPLC-MS, UV scanning and IR. The inhibition and

Method Validation for the One-Month Stability Study of trans-Resveratrol in Human Plasma.

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BACKGROUND trans-Resveratrol (t-Res) is a natural phenolic compound with various biological activities such as antioxidant, anticancer, cancer chemopreventive, cardioprotective, and neuroprotective. OBJECTIVE There is no comprehensive study about the stability of t-Res in human plasma. With respect

Determination of stilbenes (delta-viniferin, trans-astringin, trans-piceid, cis- and trans-resveratrol, epsilon-viniferin) in Brazilian wines.

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Phenolics from grapes and wines can play a role against oxidation and development of atherosclerosis. Stilbenes have been shown to protect lipoproteins from oxidative damage and to have cancer chemopreventive activity. We describe a method for the direct determination of stilbenes in several red

Dose-dependency of resveratrol in providing health benefits.

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This review describes the dose-dependent health benefits of resveratrol, a polyphenolic antioxidant that is found in a variety of foods, especially grape skin and red wine. Resveratrol provides diverse health benefits including cardioprotection, inhibition of low-density lipoprotein, activation of

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