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He Zhong Jiang et al.
Bioorganic & medicinal chemistry letters, 20(20), 6045-6047 (2010-09-08)
Natural inhibitors of fatty acid synthase (FAS) are emerging as potential therapeutic agents to treat cancer and obesity. The bioassay-guided chemical investigation of the hulls of Garcinia mangostana led to the isolation of 13 phenolic compounds (1-13) mainly including xanthone
Santo Scalia et al.
Acta pharmaceutica (Zagreb, Croatia), 64(2), 257-265 (2014-06-11)
The aim of the study was to examine the effect of topical vehicles on the in vivo human stratum corneum penetration of the antioxidant and skin photoprotective agent (-)-epigallocatechin-3-gallate (EGCG). Model oil-in-water (o/w) emulsion and gel formulations containing 1 %
Dongxu Wang et al.
Toxicology and applied pharmacology, 283(1), 65-74 (2015-01-15)
(-)-Epigallocatechin-3-gallate (EGCG), a constituent of green tea, has been suggested to have numerous health-promoting effects. On the other hand, high-dose EGCG is able to evoke hepatotoxicity. In the present study, we elucidated the responses of hepatic major antioxidant enzymes and
Gereon Lill et al.
FEBS letters, 546(2-3), 265-270 (2003-07-02)
Epigallocatechin gallate (EGCG), a major component of green tea, has been previously shown to inhibit platelet aggregation. The effects of other green tea catechins on platelet function are not known. Pre-incubation with EGCG concentration-dependently inhibited thrombin-induced aggregation and phosphorylation of
Tea polyphenols-their antioxidant properties and biological activity-a review
Gramza A, et al.,
Polish Journal of Food and Nutrition Sciences, 14(3), 219-219 (2005)
Shulin Qin et al.
Cytokine, 61(3), 924-932 (2013-01-31)
CCL20 is currently the only known chemokine ligand for the receptor CCR6, and is a mucosal chemokine involved in normal and pathological immune responses. Although nucleotide sequence data are available for ccl20 and ccr6 sequences from multiple species, the ferret
Takumi Furuta et al.
Bioorganic & medicinal chemistry letters, 17(11), 3095-3098 (2007-04-11)
Dideoxy-epigallocatechin gallate (DO-EGCG) (2), a simplified analog of naturally occurring EGCG (1), was efficiently prepared by directly introducing a ketone group at C3 and successive reduction to the sec-alcohol with 2,3-cis stereochemistry. Compound 2 showed potent anti-influenza virus activity, indicating
Jian Yang et al.
Life sciences, 92(10), 589-597 (2013-02-12)
Vascular inflammation is a key factor in the pathogenesis of diabetes-related vascular complications. Our previous study showed that (-)-epigallocatechin-3-gallate (EGCG) inhibits high glucose-induced vascular smooth muscle cell proliferation, thus it may have beneficial effects in diabetes and its complications. However
Kristina Nelson et al.
Food chemistry, 194, 495-502 (2015-10-17)
Metabolic dysfunction in obesity may be attenuated by whole-grain intake, which has been attributed to synergistic actions of bioactive compounds. Germination/malting may increase grain bioactives, including polyphenols, however biological effects compared with non-germinated grains are unclear. Polyphenols and biological effects
Daniela Valenti et al.
Biochimica et biophysica acta, 1832(12), 2085-2096 (2013-08-06)
Increasing evidence reveals a large dependency of epithelial cancer cells on oxidative phosphorylation (OXPHOS) for energy production. In this study we tested the potential of epigallocatechin-3-gallate (EGCG), a natural polyphenol known to target mitochondria, in inducing OXPHOS impairment and cell
Congde Huo et al.
Bioorganic & medicinal chemistry, 18(3), 1252-1258 (2010-01-05)
A pro-drug 8 of a synthetic analog 7 is more active in its antiproliferative activity against human breast cancer MDA-MB-231 cells possessing high catechol-O-methyltransferase (COMT) activity than the pro-drugs of EGCG and the analog 5. The higher activity of 8
Elisa Giner et al.
Journal of natural products, 74(5), 1079-1084 (2011-04-08)
2-isoprenylhydroquinone-1-glucoside (1), 3,5-dicaffeoylquinic acid (2), and 3,5-dicaffeoylquinic acid methyl ester (3), isolated from Phagnalon rupestre, improved the contact hypersensitivity response to 2,4,6-trinitrochlorobenzene in mice. These phenolics reduced ear swelling and IL-1β content by 50% 24 h after challenge; in addition
Hanwei Liu et al.
Food chemistry, 141(1), 488-494 (2013-06-19)
Procyanidin dimers, trimers, and tetramers are absorbable, whereas larger oligomers are not. Procyanidins in cranberries are bioactive components that help prevent chronic diseases; however, 85% of cranberry procyanidins are large oligomers or polymers with a degree of polymerization above four.
Cleber A Schmidt et al.
Journal of natural products, 73(12), 2035-2041 (2010-11-18)
Analysis of the ethanolic extract of the bark from Parapiptadenia rigida resulted in the isolation of the new catechin derivatives 4',3''-di-O-methylapocynin-D (10), 4',3''-di-O-methylapocynin-B (11), epigallocatechin-3-O-ferulate (8), and 4'-O-methylepigallocatechin-3-O-ferulate (9) and the catechins 4'-O-methylepigallocatechin-3-O-gallate (6) and 4'-O-methylepicatechin-3-O-gallate (7). These compounds, isolated
Ghada M Hadad et al.
Journal of chromatographic science, 52(7), 617-623 (2013-07-03)
A high-performance liquid chromatography method employing diode array detection was developed to determine levels of the major catechins, proanthocyanidin (procyanidin B2), caffeine, thymoquinone and carvacrol and its isomer, thymol, which are present in different natural complex matrices found in commercial
Mi Hee Lee et al.
Biomedical materials (Bristol, England), 10(5), 055010-055010 (2015-09-24)
Intimal hyperplasia is an excessive ingrowth of tissue resulting in chronic structural lesions commonly found at sites of atherosclerotic lesions, arterial angioplasty, vascular graft anastomoses, and other vascular abnormalities. Epigallocatechin-3-O-gallate (EGCG) was shown to elicit antioxidant, anti-proliferative, and anti-thrombogenic effects.
Cornelia Braicu et al.
Journal of nanoscience and nanotechnology, 13(1), 632-637 (2013-05-08)
Previous studies indicate that green tea extract may inhibit breast cancer progression by blocking angiogenesis, although the molecular mechanisms are not well defined. Epigallocatechin-3-gallate (EGCG) is the major biologically active component of green tea. In this study we evaluated the
Na Cao et al.
International journal of biological macromolecules, 78, 389-395 (2015-05-02)
Numerous studies demonstrate that natural polyphenols can inhibit amyloid formation and disrupt preformed amyloid fibrils. In the present study, the fibril-disruptive effects of epigallocatechin-3-gallate (EGCG) were examined using lysozyme as a model protein. The results indicated that EGCG dose dependently
Suk-Joon Hyung et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(10), 3743-3748 (2013-02-22)
Despite the significance of Alzheimer's disease, the link between metal-associated amyloid-β (metal-Aβ) and disease etiology remains unclear. To elucidate this relationship, chemical tools capable of specifically targeting and modulating metal-Aβ species are necessary, along with a fundamental understanding of their
Rungsiri Chaiittianan et al.
Drug development and industrial pharmacy, 40(12), 1597-1606 (2013-09-24)
For potential topical administration, we formulated a nanoemulsion containing phenolic constituents of Phyllanthus emblica branch extract. The nanoemulsion has high entrapment efficiency, small particle size, is stable, and can release its main chemical components. Branches of P. emblica were extracted
Mai Furumiya et al.
Drug metabolism and pharmacokinetics, 29(4), 312-316 (2014-02-05)
Myricetin is a flavonoid that has recently been suggested to interfere with the intestinal folate transport system. The present study was conducted to examine that possibility, focusing on its inhibitory effect on proton-coupled folate transporter (PCFT) as the molecular entity
Brian J Song et al.
Food chemistry, 173, 305-312 (2014-12-04)
Interactions between polyphenols and macromolecules may impact polyphenol stability and bioavailability from foods. The impact of milk on tea flavan-3-ol stability to thermal treatment was investigated. Single strength (36.2 protein per L), quarter strength (9.0 g protein per L) milk
Sema Demirci Çekiç et al.
Analytica chimica acta, 865, 60-70 (2015-03-04)
A colourimetric sensor capable of simultaneously measuring oxidative status (OS) in terms of the hazard produced by reactive oxygen species (ROS) and antioxidant activity (AOA) in regard to ROS-scavenging ability of antioxidant compounds was developed. The coloured cationic semi-quinone derivatives
Laura M Castellano et al.
Biology open, 4(9), 1206-1212 (2015-09-01)
Semen harbors amyloid fibrils formed by proteolytic fragments of prostatic acid phosphatase (PAP248-286 and PAP85-120) and semenogelins (SEM1 and SEM2) that potently enhance HIV infectivity. Amyloid but not soluble forms of these peptides enhance HIV infection. Thus, agents that remodel
Lorena Perdices et al.
Antioxidants (Basel, Switzerland), 9(8) (2020-08-14)
Retinitis pigmentosa (RP) includes a group of genetic disorders that involve the loss of visual function due to mutations mainly in photoreceptors but also in other retinal cells. Apoptosis, retinal disorganization, and inflammation are common in the progression of the
Hong-Mei Shan et al.
ChemMedChem, 10(1), 158-163 (2014-09-10)
Polo-like kinase 1 (PLK1) plays crucial functions in multiple stages of mitosis and is considered to be a potential drug target for cancer therapy. The functions of PLK1 are mediated by its N-terminal kinase domain and C-terminal polo-box domain (PBD).
Takeshi Ishii et al.
Bioorganic & medicinal chemistry, 18(14), 4892-4896 (2010-07-06)
Catechins are polyphenolic antioxidants found in green tea leaves. Recent studies have reported that various polyphenolic compounds, including catechins, cause protein carbonyl formation in proteins via their pro-oxidant actions. In this study, we evaluate the formation of protein carbonyl in
Alain Zgheib et al.
The Journal of biological chemistry, 288(19), 13378-13386 (2013-04-04)
CSF-2 and CSF-3 confer proangiogenic and immunomodulatory properties to mesenchymal stromal cells (MSCs). Transcriptional regulation of CSF-2 and CSF-3 in concanavalin A-activated MSCs requires MT1-MMP signaling and is inhibited by EGCG. The chemopreventive properties of diet-derived EGCG alter MT1-MMP-mediated intracellular
Christina W A Moyle et al.
Molecular nutrition & food research, 59(3), 401-412 (2014-12-30)
Excessive concentrations of vascular endothelial growth factor (VEGF) drive angiogenesis and cause complications such as increased growth of tumours and atherosclerotic plaques. The aim of this study was to determine the molecular mechanism underlying the potent inhibition of VEGF signalling
Hye-Kyung Na et al.
Molecular nutrition & food research, 50(2), 152-159 (2006-02-14)
Chemoprevention is an attempt to use either naturally occurring or synthetic substances or their mixtures to intervene in the progress of carcinogenesis. Recently, it has been shown that some edible phytochemicals alter gene expression, directly or indirectly, thereby regulating the
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