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FengJin Zhang et al.
Neurochemical research, 40(8), 1691-1698 (2015-07-23)
Stroke is the second leading cause of death among adults worldwide. (-)-Epigallocatechin-3-gallate (EGCG) has been demonstrated to exhibit neuroprotective functions in cerebral ischemia/reperfusion injury. However, the underlying mechanisms in this process and its contribution to the protection function remain unknown....
Yoshiyuki Aihara et al.
Bioorganic & medicinal chemistry letters, 19(15), 4171-4174 (2009-06-16)
Regioselective synthesis of methylated epigallocatechin gallate from epigallocatechin was accomplished using a 2-nitrobenzenesulfonyl (Ns) group as a protecting group for phenols. This methodology provided several methylated catechins, which are naturally scarce catechin derivatives.
Alex E Grill et al.
Drug delivery and translational research, 4(4), 344-352 (2014-11-26)
In spite of its well-documented anticancer chemopreventive and therapeutic activity, the clinical development of curcumin has been limited by its poor oral bioavailability. Curcumin has low aqueous solubility and undergoes extensive first pass metabolism following oral dosing. We hypothesized that...
Geferson de Almeida Gonçalves et al.
Food & function, 6(8), 2701-2711 (2015-07-07)
The purpose of the study was to evaluate the possible effects of the administration of a green tea extract on the oxidative state of the liver and brain of adjuvant-induced arthritic rats, a model for human rheumatoid arthritis. Daily doses...
Satoru Tamura et al.
Bioorganic & medicinal chemistry letters, 20(7), 2299-2302 (2010-03-06)
Exploration for inhibitors against expression of IgE receptor (Fc epsilonRI) on human mast cell, a significant trigger to acute and chronic allergic symptoms, disclosed epigallocatechin gallate (EGCG), epicatechin gallate, and gallocatechin gallate as active principles. Additionally, the anthocyanidin, delphinidin, and...
Takahiro Kochi et al.
Cancer letters, 342(1), 60-69 (2013-08-29)
Non-alcoholic steatohepatitis (NASH), which involves hepatic inflammation and fibrosis, is associated with liver carcinogenesis. The activation of the renin-angiotensin system (RAS), which plays a key role in blood pressure regulation, promotes hepatic fibrogenesis. In this study, we investigated the effects...
Xiaoqin Wang et al.
Journal of biomedical science, 23(1), 51-51 (2016-06-30)
Diastolic dysfunction refers to an impaired relaxation and an abnormality in a heart's filling during diastole while left ventricular systolic function is preserved. Diastolic dysfunction is commonly observed in patients with primary hypertension, diabetes and cardiomyopathies such as hypertrophic cardiomyopathy...
Suiyi Tan et al.
FEBS letters, 588(9), 1515-1522 (2014-03-25)
Amyloid fibrils play important roles in HIV-1 infection. We found peptides derived from the HIV-1 gp120 co-receptor binding region, which are defined as enhancing peptides (EPs), could form amyloid fibrils and remarkably enhance HIV-1 infection. EPs bound to the virus...
Chisa Matsumoto et al.
Scandinavian journal of clinical and laboratory investigation, 73(3), 245-252 (2013-04-03)
We established a novel method to analyze cells collected by fluorescence-activated cell sorting (FACS) named mRNA quantification after FACS (FACS-mQ) in which cells are labeled with a fluorescence dye in a manner that minimizes RNA degradation, and then cells sorted...
Jingli Shi et al.
Oncology reports, 33(6), 2972-2980 (2015-04-08)
Epigallocatechin-3-gallate (EGCG), the most abundant polyphenol in green tea extract, has been found to have anticancer activities in various types of cancer. However, the underlying mechanisms are not completely clear. In the present study, the effects of EGCG on migration...
Piwen Wang et al.
RSC advances, 4(66), 35242-35250 (2014-09-23)
The low bioavailability of most flavonoids limits their application as anti-carcinogenic agents in humans. A novel approach of treatment with a mixture of bioactive compounds that share molecular anti-carcinogenic targets may enhance the effect on these targets at low concentrations...
H Fujiki et al.
Preventive medicine, 21(4), 503-509 (1992-07-01)
Our research objective is to develop nontoxic cancer chemopreventive agents and to apply these agents in treating humans. We are identifying agents that inhibit the process of tumor promotion in two-stage carcinogenesis experiments on mouse skin. We review (a) the...
Yong Zhang et al.
Journal of neuro-oncology, 121(1), 41-52 (2014-09-01)
Combination therapy to inhibit cancer stem cells may have important clinical implications. Here, we examine the molecular mechanisms by which epigallocatechin gallate (EGCG), a bioactive polyphenol in green tea, inhibits the stem cell characteristics of glioma stem-like cells (GSLCs) and...
Animesh Chowdhury et al.
Cell biochemistry and function, 33(7), 463-477 (2015-10-22)
During remodelling of pulmonary artery, marked proliferation of pulmonary artery smooth muscle cells (PASMCs) occurs, which contributes to pulmonary hypertension. Thromboxane A2 (TxA2) has been shown to produce pulmonary hypertension. The present study investigates the inhibitory effect of epigallocatechin-3-gallate (EGCG)...
Dragan Amić et al.
Bioorganic & medicinal chemistry, 18(1), 28-35 (2009-12-01)
The applicability of the newly developed RM1 and PM6 methods implemented in the semiempirical quantum chemistry mopac2009 software package in modeling free radical scavenging activity of flavonoids was examined. Bond dissociation enthalpy (BDE) of OH groups could be calculated much...
L Zhong et al.
Cell death & disease, 6, e1770-e1770 (2015-05-23)
Epigallocatechin-3-gallate (EGCG), a major polyphenol in green tea, exhibits diverse beneficial properties, including antiviral activity. Autophagy is a cellular process that is involved in the degradation of long-lived proteins and damaged organelles. Recent evidence indicates that modulation of autophagy is...
Yi Cai et al.
Biotechnology letters, 37(12), 2371-2377 (2015-08-15)
Tea is the most consumed beverage in the world. (-)-Epigallocatechin-3-gallate (EGCG), a major green tea polyphenol, is effective in the prevention of several chronic diseases, and is marketed as part of many dietary supplements. We have now examined the myocardiotoxic effect...
Rafael De la Torre et al.
Molecular nutrition & food research, 58(2), 278-288 (2013-09-17)
Trisomy for human chromosome 21 results in Down syndrome (DS), which is among the most complex genetic perturbations leading to intellectual disability. Accumulating data suggest that overexpression of the dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 1A (DYRK1A), is a critical pathogenic mechanisms...
Sudeshna Mukherjee et al.
The Journal of nutritional biochemistry, 26(11), 1283-1297 (2015-08-28)
Green tea (GT)-based chemoprevention has shown promising results in various cancer models. However, the effective dose may not be far from the toxic dose because of inefficient systemic delivery and limited bio-availability of GT polyphenols. We have used GT polyphenols...
Franziska Mußbach et al.
Journal of cancer research and clinical oncology, 141(5), 813-825 (2014-11-07)
There is growing evidence for a role of proteinase-activated receptors (PARs), a subfamily of G protein-coupled receptors, in cancer. We have previously shown that PAR1 and PAR4 are able to promote the migration of hepatocellular carcinoma (HCC) cells suggesting a...
Katherine A Thompson-Witrick et al.
Journal of agricultural and food chemistry, 62(41), 10181-10191 (2014-09-18)
Polyphenols and maturity parameters were determined in 20 apple cultivars with potential for hard cider production grown in Virginia, U.S.A. Concentrations of five classes of polyphenols were significantly different across cultivar for both peel and flesh. Total polyphenol concentration ranged...
Seyedeh Sara Shafiei et al.
PloS one, 10(8), e0136530-e0136530 (2015-09-01)
In recent years, nanotechnology in merging with biotechnology has been employed in the area of cancer management to overcome the challenges of chemopreventive strategies in order to gain promising results. Since most biological processes occur in nano scale, nanoparticles can...
Lifeng Cai et al.
Antimicrobial agents and chemotherapy, 51(7), 2388-2395 (2007-04-25)
A metallopeptide-based fluorescence assay has been designed for the detection of small-molecule inhibitors of human immunodeficiency virus type 1 gp41, the viral protein involved in membrane fusion. The assay involves two peptides representing the inner N-terminal-heptad-repeat (HR1) coiled coil and...
John T Barr et al.
Drug metabolism and disposition: the biological fate of chemicals, 43(1), 34-41 (2014-10-19)
The mechanistic understanding of interactions between diet-derived substances and conventional medications in humans is nascent. Most investigations have examined cytochrome P450-mediated interactions. Interactions mediated by other phase I enzymes are understudied. Aldehyde oxidase (AO) is a phase I hydroxylase that...
Munawwar Ali Khan et al.
Oncology reports, 33(4), 1976-1984 (2015-02-17)
There has been increasing evidence that numerous bioactive dietary agents can hamper the process of carcinogenesis by targeting epigenetic alterations including DNA methylation. This therapeutic approach is considered as a significant goal for cancer therapy due to the reversible nature...
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...
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)
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...
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....
Chih-Hua Tseng et al.
Journal of medicinal chemistry, 54(8), 3103-3107 (2011-04-05)
Certain indeno[1,2-c]quinolines were synthesized and evaluated for antiosteoclastogenic activities. Among them, 6,9-dimethoxy-11H-indeno[1,2-c]quinolin-11-one (8a) and 9-methoxy-6-(methylthio)-11H-indeno[1,2-c]quinolin-11-one (16a) inhibited RANKL-induced osteoclast formation in Raw 264.7 cells with an IC(50) of 2.00 and 2.58 μM, respectively. Compound 8a was only weakly active in...
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