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Nutrition: Soy isoflavones

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Total 46 results found since Jan 2013.

MiR-34a/sirtuin-1/foxo3a is involved in genistein protecting against ox-LDL-induced oxidative damage in HUVECs.
In this study, human umbilical vein endothelial cells (HUVECs) were pretreated with genistein at different concentrations (10nM, 100nM and 1000nM) for 6h and then exposed to ox-LDL (50mg/L) for another 24h. Results showed that genistein restrained reactive oxygen species (ROS) and malondialdehyde (MDA) production, and ameliorated the inhibitory effect on superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and glutathione peroxidase (GPx) activity elicited by ox-LDL stimulation. The effects of genistein were correlated with the upregulation of sirtuin-1 via inhibiting miR-34a, and were abolished by sirtuin-1 siRNA...
Source: Toxicology Letters - July 5, 2017 Category: Toxicology Authors: Zhang H, Zhao Z, Pang X, Yang J, Yu H, Zhang Y, Zhou H, Zhao J Tags: Toxicol Lett Source Type: research

Genistein Protects Against Ox-LDL-Induced Inflammation Through MicroRNA-155/SOCS1-Mediated Repression of NF- ĸB Signaling Pathway in HUVECs
In this study, human umbilical vein endothelial cells (HUVECs) were pretreated with genistein (10, 100, and 1000  nM) for 6 h and then exposed to ox-LDL (50 mg/L) for another 24 h. Results showed that ox-LDL induced the expressions of E-selectin, P-selectin, monocyte chemotactic protein-1, interleukin-8, vascular adhesion molecule-1, and intercellular adhesion molecule-1, which were counteracted by geniste in. The inhibitory effect was further enhanced with the augment of genistein (10, 100, and 1000 nM). Further analyses demonstrated the effect of genistein was associated with reducing miR-155 and elevating SOCS1, an...
Source: Inflammation - July 1, 2017 Category: Allergy & Immunology Source Type: research

7-Difluoromethoxyl-5,4'-di-n-octyl genistein inhibits the stem-like characteristics of gastric cancer stem-like cells and reverses the phenotype of epithelial-mesenchymal transition in gastric cancer cells.
The objective of the present study was to investigate whether DFOG inhibits the stemness and reverses the epithelial-mesenchymal transition (EMT) phenotype of gastric cancer stem-like cells (GCSLCs) derived from human gastric cancer SGC-7901 cells and to identify its potential mechanism. Sphere-forming cells (SFCs) from the SGC-7901 cells possessed the properties of GCSLCs. DFOG preferentially inhibited self-renewal, cell migration and cell invasion, and downregulated the expression of stem cell biomarkers in a dose-dependent manner. At the molecular level, these effects were accompanied by the downregulation of forkhead b...
Source: Oncology Reports - June 11, 2016 Category: Cancer & Oncology Tags: Oncol Rep Source Type: research

Protective effects of marein on high glucose-induced glucose metabolic disorder in HepG2 cells
Conclusions Consequently, marein improved insulin resistance induced by high glucose in HepG2 cells through CaMKK/AMPK/GLUT1 to promote glucose uptake, through IRS/Akt/GSK-3β to increase glycogen synthesis, and through Akt/FoxO1 to decrease gluconeogenesis. Marein could be a promising leading compound for the development of hypoglycemic agent or developed as an adjuvant drug for diabetes mellitus. Graphical abstract
Source: Phytomedicine - May 18, 2016 Category: Drugs & Pharmacology Source Type: research

Genistein ameliorated endothelial nitric oxidase synthase uncoupling by stimulating sirtuin-1 pathway in ox-LDL-injured HUVECs
Publication date: Available online 16 January 2016 Source:Environmental Toxicology and Pharmacology Author(s): Hua-ping Zhang, Jia-hui Zhao, Hai-xia Yu, Dong-xing Guo Endothelial nitric oxidase synthase (eNOS) uncoupling plays a causal role in endothelial dysfunction in atherosclerosis. Genistein consumption has been associated with the prevention of atherosclerosis. However, the effect of genistein on eNOS uncoupling has not been reported. A model of oxidized low-density lipoprotein (ox-LDL)-induced injury on human umbilical vein endothelial cells (HUVECs) was established to evaluate the effect of genistein on eNOS ...
Source: Environmental Toxicology and Pharmacology - January 17, 2016 Category: Environmental Health Source Type: research

Equol Increases Cancer Progression via c-Myc Up-regulation Molecular Bases of Disease
This study therefore implicates c-Myc as a potential regulator of the cancer-promoting effects of equol via up-regulation of eIF4GI and selective initiation of translation on mRNAs that utilize non-canonical initiation, including certain oncogenes.
Source: Journal of Biological Chemistry - March 5, 2015 Category: Chemistry Authors: de la Parra, C., Borrero-Garcia, L. D., Cruz-Collazo, A., Schneider, R. J., Dharmawardhane, S. Tags: Protein Synthesis and Degradation Source Type: research

A precisely substituted benzopyran targets androgen refractory prostate cancer cells through selective modulation of estrogen receptors.
Abstract Dietary consumption of phytoestrogens like genistein has been linked with lower incidence of prostate cancer. The estradiol-like benzopyran core of genistein confers estrogen receptor-β (ER-β) selectivity that imparts weak anti-proliferative activity against prostate cancer cells. DL-2-[4-(2-piperidinoethoxy)phenyl]-3-phenyl-2H-1-benzopyran (BP), a SERM designed with benzopyran core, targeted androgen independent prostate cancer (PC-3) cells 14-times more potently than genistein, ~25% more efficiently than tamoxifen and 6.5-times more actively than ICI-182780, without forfeiting significant specificity ...
Source: Toxicology and Applied Pharmacology - February 2, 2015 Category: Toxicology Authors: Kumar R, Verma V, Sharma V, Jain A, Singh V, Sarswat A, Maikhuri JP, Sharma VL, Gupta G Tags: Toxicol Appl Pharmacol Source Type: research

Title: Genistein Disrupts Glucocorticoid Receptor Signaling in Human Uterine Endometrial Ishikawa Cells
Conclusions: Using Ishikawa cells, we observed that exposure to genistein resulted in distinct changes in gene expression and unique differences in the GR transcriptome. Citation: Whirledge S, Senbanjo LT, Cidlowski JA. 2015. Genistein disrupts glucocorticoid receptor signaling in human uterine endometrial Ishikawa cells. Environ Health Perspect 123:80–87; http://dx.doi.org/10.1289/ehp.1408437 Address correspondence to J.A. Cidlowski, NIH/NIEHS, MD F3-07, P.O. Box 12233, Research Triangle Park, NC 27709 USA. Telephone: (919) 541-1564. E-mail: cidlows1@niehs.nih.gov We thank X. Xu (Integrative Bioinformatic...
Source: EHP Research - December 31, 2014 Category: Environmental Health Authors: Web Admin Tags: Research Article January 2015 Source Type: research

Genistein alleviates pressure overload‐induced cardiac dysfunction and interstitial fibrosis in mice
CONCLUSIONS AND IMPLICATIONSGen improved cardiac function and inhibited cardiac fibrosis in response to pressure overload. The underlying mechanism may involve regulation of the MTA3/TAK1/MKK4/JNK signaling pathway. Gen may serve as a novel agent for prevention and therapy of cardiac disorders associated with fibrosis.
Source: British Journal of Pharmacology - November 3, 2014 Category: Drugs & Pharmacology Authors: Wei Qin, Ning Du, Longyin Zhang, Xianxian Wu, Yingying Hu, Xiaoguang Li, Nannan Shen, Yang Li, Baofeng Yang, Chaoqian Xu, Zhiwei Fang, Yanjie Lu, Yong Zhang, Zhimin Du Tags: Research Paper – Chinese innovation in cardiovascular drug Discovery Themed Issue Source Type: research

The dietary ingredient, genistein, stimulates cathelicidin antimicrobial peptide expression through a novel S1P-dependent mechanism
Abstract: We recently discovered that a signaling lipid, sphingosine-1-phosphate (S1P), generated by sphingosine kinase 1, regulates a major epidermal antimicrobial peptide's [cathelicidin antimicrobial peptide (CAMP)] expression via an NF-κB→C/EBPα-dependent pathway, independent of vitamin D receptor (VDR) in epithelial cells. Activation of estrogen receptors (ERs) by either estrogens or phytoestrogens also is known to stimulate S1P production, but it is unknown whether ER activation increases CAMP production. We investigated whether a phytoestrogen, genistein, simulates CAMP expression in keratinocytes, a model of ep...
Source: The Journal of Nutritional Biochemistry - March 31, 2014 Category: Biochemistry Authors: Kyungho Park, Young-Il Kim, Kyong-Oh Shin, Ho Seong Seo, Jong Youl Kim, Taj Mann, Yuko Oda, Yong-Moon Lee, Walter M. Holleran, Peter M. Elias, Yoshikazu Uchida Tags: Research Articles Source Type: research

FOXO3a-mediated suppression of the self-renewal capacity of sphere-forming cells derived from the ovarian cancer SKOV3 cell line by 7-difluoromethoxyl-5,4'-di-n-octyl genistein.
Abstract Carcinogenesis is predominantly dependent on the cancer stem cells (CSCs) residing or populating within the cancer. We previously demonstrated that the novel synthetic genistein analogue, 7-difluoromethoxyl-5,4'-di-n-octylgenistein (DFOG), induced apoptotic cell death of ovarian and gastric cancer cells. The present study demonstrated that sphere‑forming cells (SFCs) derived from the ovarian cancer cell-line SKOV3 possessed ovarian cancer stem-like cell (OCSLC) properties, including self-renewal and high tumorigenicity. DFOG may be effective in inhibiting the self‑renewal capacity of SFCs derived from...
Source: Molecular Medicine - March 6, 2014 Category: Molecular Biology Authors: Ning Y, Luo C, Ren K, Quan M, Cao J Tags: Mol Med Rep Source Type: research

Genistein Inhibited Amyloid-β induced Inflammatory Damage in C6 Glial Cells
Conclusions: These results indicated that GEN exhibited anti-inflammatory effects through regulating NF-κB signaling pathway in Aβ25-35-treated C6 glial cells.
Source: Archives of Medical Research - January 31, 2014 Category: Research Authors: Xia Zhao, Linhong Yuan, Huanling Yu, Yuandi Xi, Weiwei Ma, Xin Zhou, Juan Ding, Rong Xiao Tags: Clinical Source Type: research

Genistein Induces G2/M Arrest in Gastric Cancer Cells by Increasing the Tumor Suppressor PTEN Expression.
Abstract Genistein, a major isoflavone found in soybeans, exhibits anticarcinogenic properties. The inhibitory effect of genistein on cell proliferation is associated with G2/M cell cycle arrest and inhibition of cdc2 activities. Here we assessed the role of PTEN in regulation of genistein-mediated G2/M cell cycle arrest in the gastric cancer cell lines (SGC-7901 and BGC-823). After 24 h following treatment, genistein induced a concentration-dependent accumulation of cells in the G2/M phase of the cell cycle. The sustained G2/M arrest by genistein in SGC-7901 and BGC-823 cells is associated with increased phospho...
Source: Nutrition and Cancer - September 20, 2013 Category: Cancer & Oncology Authors: Liu YL, Zhang GQ, Yang Y, Zhang CY, Fu RX, Yang YM Tags: Nutr Cancer Source Type: research

Inflammatory cytokine TNF-α inhibits Na(+)-glutamine cotransport in intestinal epithelial cells.
In this study, the presence of Na(+)-Gln cotransport was established by measuring Gln uptake in 10 days postconfluent IEC-6 cells grown on transwell plates. Cation, amino acid specificity, and siRNA transfection studies established that Na(+)-Gln cotransport is mediated via B(0)AT1. Immunoblotting and immunofluorescence studies established the apical membrane localization of B(0)AT1 in IEC-6 cells. Tumour necrosis factor α (TNF-α) inhibited Na(+)-Gln cotransport in a concentration- and time-dependent manner with an inhibitory concentration of 1.53 nmol·L(-1). Quantitative real-time PCR and Western blot analyses indicate...
Source: Canadian Journal of Physiology and Pharmacology - April 1, 2013 Category: Drugs & Pharmacology Authors: Talukder JR, Boyd B, Griffin A, Jaima A, Rajendran VM Tags: Can J Physiol Pharmacol Source Type: research

Multiple Phytoestrogens Inhibit Cell Growth and Confer Cytoprotection By Inducing Manganese Superoxide Dismutase Expression
Phytoestrogens are of interest because of their reported beneficial effects on many human maladies including cancer, neurodegeneration, cardiovascular disease and diabetes. As data on phytoestrogens continues to accumulate, it is clear that there is significant overlap in the cellular effects elicited by these various compounds. Here, we show that one mechanism by which a number of phytoestrogens achieve their growth inhibitory and cytoprotective effects is via induction of the mitochondrial manganese superoxide dismutase (MnSOD). Eight phytoestrogens, including resveratrol, coumestrol, kaempferol, genistein, daidzein, api...
Source: Phytotherapy Research - March 21, 2013 Category: Biochemistry Authors: Ellen L. Robb, Jeffrey A. Stuart Tags: Research Article Source Type: research