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Pomegranate Juice Polyphenols Induce Macrophage Death via Apoptosis as Opposed to Necrosis Induced by Free Radical Generation: A Central Role for Oxidative Stress.

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At high concentrations, polyphenols induce cell death, and the polyphenols-rich pomegranate juice (PJ), known for its antioxidative/antiatherogenic properties, can possibly affect cell death, including macrophage death involved in atherogenesis. In the present study, apoptotic/necrotic macrophage

Anti-necrosis potential of polyphenols against snake venoms.

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Polyphenols from the extracts of Areca catechu L. and Quercus infectoria Oliv. inhibited phospholipase A(2), proteases, hyaluronidase and L-amino acid oxidase of Naja naja kaouthia Lesson (NK) and Calloselasma rhodostoma Kuhl (CR) venoms by in vitro tests. Both extracts inhibited the hemorrhagic

Plant-derived polyphenols attenuate lipopolysaccharide-induced nitric oxide and tumour necrosis factor production in murine microglia and macrophages.

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Lipopolysaccharides released during bacterial infections induce the expression of pro-inflammatory cytokines and lead to complications such as neuronal damage in the CNS and septic shock in the periphery. While the initial infection is treated by antibiotics, anti-inflammatory agents would be

The anti-inflammatory activity of the polyphenol resveratrol may be partially related to inhibition of tumour necrosis factor-alpha (TNF-alpha) pre-mRNA splicing.

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The present study shows for the first time that the polyphenol resveratrol (RESV) blocks processing of tumour necrosis factor-alpha (TNF-alpha) pre-mRNA in mature mRNA. This study was carried out in turbot (Psetta maxima (L.)), a fish species that we are using to evaluate the effects of RESV on the

Anti-Atherosclerotic Effect of Hibiscus Leaf Polyphenols against Tumor Necrosis Factor-alpha-Induced Abnormal Vascular Smooth Muscle Cell Migration and Proliferation.

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The proliferation and migration of vascular smooth muscle cells (VSMCs) are major events in the development of atherosclerosis following stimulation with proinflammatory cytokines, especially tumor necrosis factor-alpha (TNF-α). Plant-derived polyphenols have attracted considerable attention in the

The role of dietary polyphenols in tumor necrosis factor-related apoptosis inducing ligand (TRAIL)-induced apoptosis for cancer chemoprevention.

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Polyphenols, occurring in vegetables, fruits, herbs, spices, propolis, tea, beer, and wine play an important role in cancer chemoprevention. Dietary polyphenols exert their chemopreventive effect by multiple molecular mechanisms of action on apoptosis signaling pathways in cancer cells. In this

Plant polyphenols effectively protect HaCaT cells from ultraviolet C-triggered necrosis and suppress inflammatory chemokine expression.

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Oxidative stress is a common response of epidermal cells to a variety of noxious stimuli such as ultraviolet (UV) radiation from solar light and proinflammatory cytokines from skin-infiltrating leukocytes. Here, we report that two types of plant-derived antioxidants, the phenylpropanoid glycoside

Tea polyphenols inhibit IL-6 production in tumor necrosis factor superfamily 14-stimulated human gingival fibroblasts.

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IL-6 is well recognized to be a potent bone resorptive agent and thus in the development of periodontal disease. Epigallocatechin gallate (EGCG) and epicatechin gallate (ECG), the major catechins in green tea, and theaflavin-3,3'-digallate (TFDG), polyphenol in black tea, have multiple beneficial

Downregulation of tumor necrosis factor and other proinflammatory biomarkers by polyphenols.

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Human tumor necrosis factor (TNF), first isolated by our group as an anticancer agent, has been now shown to be a primary mediator of inflammation. Till today 19 different members of the TNF superfamily which interact with 29 different receptors, have been identified. Most members of this family

Green tea polyphenols block endotoxin-induced tumor necrosis factor-production and lethality in a murine model.

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Green tea polyphenols are potent antioxidants. They have both anti-cancer and anti-inflammatory effects. However, their mechanisms of actions remain unclear. In inflammation, tumor necrosis factor-alpha(TNFalpha) plays a pivotal role. NF-KB, an oxidative stress -sensitive nuclear transcription

Immunostimulation by plant polyphenols: a relationship between tumor necrosis factor-alpha production and tannin structure.

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The ability of the naturally occurring tumoricidal ellagitannin coriariin A to stimulate secretion of both IL-1beta and TNF-alpha from human peripheral blood mononuclear cells has been demonstrated. Companion studies with the monomeric gallotannin beta-D-pentagalloylglucose and a synthesized dimeric

Green tea polyphenol epigallocatechin-3-gallate inhibits advanced glycation end product-induced expression of tumor necrosis factor-alpha and matrix metalloproteinase-13 in human chondrocytes.

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BACKGROUND The major risk factor for osteoarthritis (OA) is aging, but the mechanisms underlying this risk are only partly understood. Age-related accumulation of advanced glycation end products (AGEs) can activate chondrocytes and induce the production of proinflammatory cytokines and matrix

Antileishmanial activity of hydrolyzable tannins and their modulatory effects on nitric oxide and tumour necrosis factor-alpha release in macrophages in vitro.

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A series of 27 hydrolyzable tannins and related compounds was tested for antiparasitic effects against both extracellular promastigote and intracellular amastigote Leishmania donovani organisms. In parallel, the compounds were evaluated for their immunomodulatory effects on macrophage functions,

Mechanism of pomegranate ellagic polyphenols reducing insulin resistance on gestational diabetes mellitus rats.

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Pomegranate ellagic polyphenols (PEP) has been used as a good medicine in many cultures throughout history. However, the mechanism of PEP regulated insulin resistance on gestational diabetes mellitus (GDM) rats is unclear. The main purpose of the present study was to explore the

Anti-Inflammatory Effect of a Polyphenol-Enriched Fraction from Acalypha wilkesiana on Lipopolysaccharide-Stimulated RAW 264.7 Macrophages and Acetaminophen-Induced Liver Injury in Mice.

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A polyphenol-enriched fraction (PEF) from Acalypha wilkesiana, whose leaves have been traditionally utilized for the treatment of diverse medical ailments, was investigated for the anti-inflammatory effect and molecular mechanisms by using lipopolysaccharide- (LPS-) stimulated RAW 264.7 macrophages

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