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trans resveratrol

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https://www.readbyqxmd.com/read/29338358/chemical-and-biological-insights-of-ouratea-hexasperma-a-st-hil-baill-a-source-of-bioactive-compounds-with-multifunctional-properties
#1
Queli Cristina Fidelis, Immacolata Faraone, Daniela Russo, Francisco Eduardo Aragão Catunda-Jr, Lisiana Vignola, Mario Geraldo de Carvalho, Nunziatina de Tommasi, Luigi Milella
The study aimed to evaluate in vitro antioxidant, anticholinesterase and antidiabetic properties of Ouratea hexasperma (A. St.-Hil.) Baill. The inflorescence methanol extract and the ethyl acetate fraction of leaves and stems reported the highest Relative Antioxidant Capacity Index (RACI), whereas the dichloromethane fraction of leaves was the best inhibitor of α-amylase and α-glucosidase. Trans-3-O-methyl-resveratrol-2-C-β-glucoside, lithospermoside, 2,5-dimethoxy-p-benzoquinone, lup-20(30)-ene-3β,28-diol, 7-O-methylgenistein, apigenin and luteolin and amentoflavone were isolated from O...
January 16, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29313746/comparison-of-calorie-restricted-diet-and-resveratrol-supplementation-on-anthropometric-indices-metabolic-parameters-and-serum-sirtuin-1-levels-in-patients-with-nonalcoholic-fatty-liver-disease-a-randomized-controlled-clinical-trial
#2
Somayyeh Asghari, Mohammad Asghari-Jafarabadi, Mohammad-Hossein Somi, Seyed-Mostafa Ghavami, Maryam Rafraf
OBJECTIVE: There is a promising perspective regarding the potential effect of resveratrol in preventing and treating metabolic disturbances similar to that of calorie restriction. The aim of this study was to evaluate the effects of calorie-restricted (CR) diet on metabolic parameters and then to investigate whether resveratrol supplementation has beneficial effects similar to CR diet in patients with nonalcoholic fatty liver disease (NAFLD). METHODS: This randomized controlled clinical trial was conducted in 90 patients with NAFLD (males and females) aged 20 to 60 years with body mass index (BMI) ranging from 25 to 35 kg/m2...
January 9, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29236070/lc-ms-ms-tandem-mass-spectrometry-for-analysis-of-phenolic-compounds-and-pentacyclic-triterpenes-in-antifungal-extracts-of-terminalia-brownii-fresen
#3
Enass Y A Salih, Pia Fyhrquist, Ashraf M A Abdalla, Abdelazim Y Abdelgadir, Markku Kanninen, Marketta Sipi, Olavi Luukkanen, Mustafa K M Fahmi, Mai H Elamin, Hiba A Ali
Decoctions and macerations of the stem bark and wood of Terminalia brownii Fresen. are used in traditional medicine for fungal infections and as fungicides on field crops and in traditional granaries in Sudan. In addition, T. brownii water extracts are commonly used as sprays for protecting wooden houses and furniture. Therefore, using agar disc diffusion and macrodilution methods, eight extracts of various polarities from the stem wood and bark were screened for their growth-inhibitory effects against filamentous fungi commonly causing fruit, vegetable, grain and wood decay, as well as infections in the immunocompromised host...
December 13, 2017: Antibiotics
https://www.readbyqxmd.com/read/29232856/resveratrol-loaded-lipid-nanocarriers-correlation-between-in-vitro-occlusion-factor-and-in-vivo-skin-hydrating-effect
#4
Lucia Montenegro, Carmela Parenti, Rita Turnaturi, Lorella Pasquinucci
Lipid nanocarriers show occlusive properties that may be related to their ability to improve skin hydration. The aim of this work was to evaluate the relationship between in vitro occlusion factor and in vivo skin hydration for three types of lipid nanocarriers: nanoemulsions (NEs), solid lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLCs). These lipid nanocarriers were loaded with trans-resveratrol (RSV) and incorporated in gel vehicles. In vitro occlusion factor was in the order SLNs > NLCs > NEs...
December 10, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/29229234/trans-resveratrol-mitigates-type-1-diabetes-induced-oxidative-dna-damage-and-accumulation-of-advanced-glycation-end-products-in-glomeruli-and-tubules-of-rat-kidneys
#5
Heba Al-Hussaini, Narayana Kilarkaje
Hyperglycemia induces the formation of advanced glycation end products (AGEs) and their receptors (RAGEs), which alter several intracellular signaling mechanisms leading to the onset and progression of diabetic nephropathy. The present study focused on, i) modulatory effects of trans-resveratrol (3,5,4'-trihydroxy-trans-stilbene) on structural changes, AGE (NƐ-carboxymethyl-lysine), RAGE, oxidative stress and DNA damage, and apoptosis, and ii) localization of fibrotic changes, AGE, RAGE, 8-oxo-dG and 4-hydroxynonenal (4-HNE) in diabetic rat kidneys...
December 8, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29223600/trans-%C3%AE%C2%B5-viniferin-is-an-amyloid-%C3%AE-disaggregating-and-anti-inflammatory-drug-in-a-mouse-primary-cellular-model-of-alzheimer-s-disease
#6
Elodie Vion, Guylène Page, Eric Bourdeaud, Marc Paccalin, Jérôme Guillard, Agnès Rioux Bilan
Alzheimer's disease (AD) is marked by several cellular and molecular damage. Therefore, the therapeutic interest of multi-target molecules is increasingly justified. Polyphenols presenting multiple pharmacological effects would be more efficient. In this study, beneficial effects of trans ε-viniferin, a natural polyphenol were thus evaluated. This study reported that this stilbenoid (1) induced the disaggregation of amyloid β (Aβ) peptide and (2) rescued inflammation in murine primary neuronal cultures. These both effects are higher than those of resveratrol, and so, trans ε-viniferin could be a good therapeutic multi-target candidate...
December 6, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/29194377/optimization-of-bioactive-polyphenols-extraction-from-picea-mariana-bark
#7
Nellie Francezon, Naamwin-So-Bâwfu Romaric Meda, Tatjana Stevanovic
Reported for its antioxidant, anti-inflammatory and non-toxicity properties, the hot water extract of Picea mariana bark was demonstrated to contain highly valuable bioactive polyphenols. In order to improve the recovery of these molecules, an optimization of the extraction was performed using water. Several extraction parameters were tested and extracts obtained analyzed both in terms of relative amounts of different phytochemical families and of individual molecules concentrations. As a result, low temperature (80 °C) and low ratio of bark/water (50 mg/mL) were determined to be the best parameters for an efficient polyphenol extraction and that especially for low molecular mass polyphenols...
December 1, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29189985/evaluation-of-the-effect-of-the-new-methoxy-stilbenes-on-expression-of-receptors-and-enzymes-involved-in-estrogen-synthesis-in-cancer-breast-cells
#8
Barbara Licznerska, Hanna Szaefer, Marcin Wierzchowski, Renata Mikstacka, Katarzyna Papierska, Wanda Baer-Dubowska
Our previous study showed that the new synthetic methoxy-stilbenes, 3,4,2'-trimethoxy-trans-stilbene (3MS), 3,4,2',4'-tetramethoxy-trans-stilbene (4MS), and 3,4,2',4',6'-pentamethoxy-trans-stilbene (5MS), modulate the constitutive expression of enzymes and receptors involved in estrogen metabolism in breast immortalized epithelial MCF10 cells. In this study, we evaluated the effect of 3MS, 4MS, and 5MS in comparison to resveratrol activity in MCF7 estrogen-dependent and MDA-MB-231 estrogen-independent breast cancer cell lines...
November 30, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29186045/resveratrol-induced-effects-on-body-fat-differ-depending-on-feeding-conditions
#9
REVIEW
Iñaki Milton-Laskibar, Saioa Gómez-Zorita, Leixuri Aguirre, Alfredo Fernández-Quintela, Marcela González, María P Portillo
Science constantly seeks to identify new molecules that could be used as dietary functional ingredients in the fight against obesity and its co-morbidities. Among them, polyphenols represent a group of molecules of increasing interest. One of the most widely studied polyphenols is resveratrol (trans-3,4',5-trihydroxystilbene), which has been proposed as an "energy restriction mimetic" because it can exert energy restriction-like effects. The aim of this review is to analyze the effects of resveratrol on obesity under different feeding conditions, such as overfeeding, normal feeding, and energy restriction, in animals and humans...
November 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29160087/glyoxalase-1-modulation-in-obesity-and-diabetes
#10
Naila Rabbani, Paul J Thornalley
SIGNIFICANCE: Obesity and type 2 diabetes mellitus are increasing globally. There is also increasing associated complications, such as non-alcoholic fatty liver disease (NAFLD) and vascular complications of diabetes. There is currently no licensed treatment for NAFLD and no recent treatments for diabetic complications. New approaches are required, particularly those addressing mechanism-based risk factors for health decline and disease progression. Recent Advances: Dicarbonyl stress is the abnormal accumulation of reactive dicarbonyl metabolites such as methylglyoxal (MG) leading to cell and tissue dysfunction...
January 2, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29156986/microbial-transformation-of-resveratrol-by-endophyte-streptomyces-sp-a12-isolated-from-polygonum-cuspidatum
#11
Tian Jiewei, Wang Lei, Long Xiufeng, Zhang Heming, Li Xiaoguang, Fu Haiyan, Tian Yongqiang
Resveratrol (1) undergoes microbial transformation when fermented with Streptomyces sp. A12 to yield 3, 5, 4'-trimethoxy-trans-stilbene (2). The structure of the compound 2 was elucidated using the modern spectroscopic techniques. This is the first report of the microbial transformation of resveratrol to compound 2 using the endophyte isolated from Polygonum cuspidatum.
November 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29155014/resveratrol-dimer-trans-%C3%AE%C2%B5-viniferin-prevents-rotaviral-diarrhea-in-mice-by-inhibition-of-the-intestinal-calcium-activated-chloride-channel
#12
Bo Yu, Yu Jiang, Bo Zhang, Hong Yang, Tonghui Ma
We previously identified, by a natural-product screen, resveratrol oligomers as inhibitors of the cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel. Here, we report the resveratrol dimer trans-ε-viniferin (TV) and tetramer r-2-viniferin (RV) as inhibitors of the intestinal calcium-activated chloride channel (CaCC) and demonstrate their antisecretory efficacy in a neonatal mouse model of rotaviral diarrhea. Short-circuit measurements show inhibition of CaCC current in the human colonic cell line HT-29 by TV and RV with IC50∼1 and 20μM, respectively...
November 14, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29150333/design-synthesis-and-evaluation-of-novel-dihydrostilbene-derivatives-as-potential-anti-melanogenic-skin-protecting-agents
#13
Yu Zhu, Wen-Hui Pan, Chuen Fai Ku, Hong-Jie Zhang, Siu Wai Tsang
The stems of Dendrobium orchids (Orchidaceae), also known as Shi Hu, have been used for medicinal purposes for centuries in oriental countries. In fact, the health benefits of Shi Hu have been evidenced by its modern pharmacological actions on conquering oxidative stress in pathological conditions. From the extracts of two commonly used Dendrobium species, we obtained discernible amounts of stilbenoids, explicitly trans-resveratrol (1) and dihydro-resveratrol (2), which are prototypical antioxidants. When applied to cultured melanocytes, these stilbenoids, dihydro-resveratrol (2) in particular, significantly reduced melanin formation via inhibiting tyrosinase activity and expression of tyrosinase-related proteins...
October 10, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29124656/enzymatic-activation-of-the-emerging-drug-resveratrol
#14
Rina D Koyani, Rafael Vazquez-Duhalt
The plant originated stilbene "resveratrol" (3,4',5-trans-trihydroxystilbene) is well known for its diverse health benefits including anti-tumor, anti-inflammatory, anti-microbial, and anti-oxidant properties. Besides a significant amount of reports on different aspects of its application as prodrug in the last 50 years, still, a strategy leading to the production of the active drug is missing. The aim of this work was to evaluate the enzymatic activation of prodrug resveratrol to the effective drug piceatannol, without engaging expensive cofactors...
November 9, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29110988/resveratrol-analogues-like-piceatannol-are-potent-antioxidants-as-quantitatively-demonstrated-through-the-high-scavenging-ability-against-reactive-oxygen-species-and-methyl-radical
#15
Yoshimi Sueishi, Risako Nii, Naru Kakizaki
Resveratrol (RSV) analogues have attracted much attention because of the expected health functions including antioxidant activities. We have carried out a quantitative determination of the scavenging abilities of six trans-RSV analogues against various reactive oxygen species and methyl radical (hydroxyl radical, superoxide, alkoxyl radical, peroxyl radical, methyl radical, and singlet oxygen). RSV analogues are in general more potent scavenger than the parent RSV. Furthermore, piceatannol (PIC) having two OH groups in the ortho position of resveratrol was found to show 11 times higher scavenging ability against peroxyl radical than parent resveratrol...
October 20, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29110598/sirt1-as-a-therapeutic-target-in-diabetic-complications
#16
Justyna Strycharz, Żaneta Rygielska, Ewa Świderska, Józef Drzewoski, Janusz Szemraj, Leszek Szmigiero, Agnieszka Śliwińska
Background SIRT1 is an epigenetic enzyme involved in histone and non-histone protein deacetylation. It acts primarily as a metabolic sensor, which responses to changing energy status by deacetylating crucial transcription factors and cofactors. In this way, SIRT1 regulates mitochondrial function and biogenesis, oxidative stress, inflammation, apoptosis and cellular senescence. Disturbance of all of these phenomena promotes the pathogenesis of diabetic complications. These disorders are inseparably connected with chronic hyperglycemia, which possesses a strong epigenetic determinant...
November 6, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29104473/the-inhibition-of-indoleamine-2-3-dioxygenase-1-by-connexin-43
#17
Han-Chen Lin, Chih-Jen Yang, Yu-Diao Kuan, Wei-Kuang Wang, Wen-Wei Chang, Che-Hsin Lee
Upregulation of connexin 43 (Cx43) showed potential in enhancing immune surveillance that was suppressed in the tumor microenvironment. The expression of indoleamine 2, 3-dioxygenase (IDO) is one of the crucial factors contributing to tumor immune tolerance by depletion of tryptophan and IDO-mediated tryptophan metabolites. Here, we aim to investigate the role of Cx43 in IDO production in murine tumor by using Cx43 inducers. Resveratrol (trans-3, 5, 4 '-trihydroxystilbene) is a natural plant-derived polyphenol possessing positive effect against cancer...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29071216/effects-of-resveratrol-on-the-structure-and-catalytic-function-of-bovine-liver-catalase-blc-spectroscopic-and-theoretical-studies
#18
Samaneh Rashtbari, Gholamreza Dehghan, Reza Yekta, Abolghasem Jouyban, Mehrdad Iranshahi
Purpose: The study on the interaction between various compounds and macromolecules such as enzymes has been very important for monitoring the alteration of structural and functional properties of them. Resveratrol (3, 5, 4-trihydroxy-stilbene; RES) is a biologically active phytoallexin found in grapes and other food products. This article shows an interaction of native bovine liver catalase (BLC) with natural antioxidant product, trans resveratrol (tRES) using multispectroscopic methods. Methods: The interaction between BLC and tRES is performed using UV-vis absorption, fluorescence and circular dichroism (CD) spectroscopy and molecular docking study...
September 2017: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29066884/trans-resveratrol-loaded-nonionic-lamellar-liquid-crystalline-systems-structural-rheological-mechanical-textural-and-bioadhesive-characterization-and-evaluation-of-in-vivo-anti-inflammatory-activity
#19
Bruno Fonseca-Santos, Cínthia Yuka Satake, Giovana Maria Fioramonti Calixto, Aline Martins Dos Santos, Marlus Chorilli
Resveratrol (Res) is a common phytoalexin present in a few edible materials, such as grape skin, peanuts, and red wine. Evidence has shown the beneficial effects of Res on human health, which may be attributed to its anti-inflammatory activity. However, the poor aqueous solubility of Res limits its therapeutic effectiveness. Therefore, the use of nanostructured delivery systems for Res, such as liquid-crystalline systems, could be beneficial. In this study, we aimed to develop, characterize, and determine the in vivo effectiveness of Res-loaded liquid-crystalline systems...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29052449/resveratrol-in-management-of-bone-and-spinal-cancers
#20
Gang Chen, Hong Xia, Zhi-Guo Zhang, Hai-Liang Yu
Bone cancer is a malignant primary tumour of the bone with different typing, such as, osteosarcoma, chondrosarcoma, Ewing's sarcoma and fibrosarcoma. Despite the clinical efficacy of conventional therapies of bone cancer, most patients eventually relapse and the disease remains incurable. Therefore, new therapeutic strategies are needed to improve patient outcome. In this review article, we have discussed the role of resveratrol in preventing bone and spinal cancers and therapeutics. Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a natural polyphenol, which has been widely reported as an anticancer molecule...
October 20, 2017: Natural Product Research
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