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Resveratrol AND Sirtuins

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https://www.readbyqxmd.com/read/28481291/inflammation-downregulates-ucp1-expression-in-brown-adipocytes-potentially-via-sirt1-and-dbc1-interaction
#1
Mark K Nøhr, Natalia Bobba, Bjørn Richelsen, Sten Lund, Steen B Pedersen
Brown adipose tissue thermogenesis at the cost of energy is not only important for the development of obesity, but also possesses great promise in anti-obesity treatment. Uncoupling protein 1 (UCP1) expression has been reported to be under control of the intracellular deacetylase SIRT1. Here, we investigated the effect and mechanism of inflammation and sirtuin-1 (SIRT1) activation on the induction of thermogenic genes in immortalized brown adipocytes incubated with LPS or IL1β and mice with elevated inflammatory tone...
May 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28473882/sirtuin-1-regulates-matrix-metalloproteinase-13-expression-induced-by-porphyromonas-endodontalis-lipopolysaccharide-via-targeting-nuclear-factor-%C3%AE%C2%BAb-in-osteoblasts
#2
Liu Qu, Yaqiong Yu, Lihong Qiu, Di Yang, Lu Yan, Jiajie Guo, Rabita Jahan
Porphyromonas endodontalis lipopolysaccharide (P.e LPS) is an important initiating factor for periapical inflammation and bone destruction. Matrix metalloproteinase-13 (MMP-13) has been shown to participate in the formation and diffusion of periapical bone lesion in chronic apical periodontitis. Sirtuin 1 (SIRT1) is a key regulator of inflammation in mammalian cells which suppresses the release of inflammatory mediators. This study aimed to explore the role of SIRT1 in regulating MMP-13 expression induced by P...
2017: Journal of Oral Microbiology
https://www.readbyqxmd.com/read/28412652/during-yeast-chronological-aging-resveratrol-supplementation-results-in-a-short-lived-phenotype-sir2-dependent
#3
Ivan Orlandi, Giulia Stamerra, Maurizio Strippoli, Marina Vai
Resveratrol (RSV) is a naturally occurring polyphenolic compound endowed with interesting biological properties/functions amongst which are its activity as an antioxidant and as Sirtuin activating compound towards SIRT1 in mammals. Sirtuins comprise a family of NAD(+)-dependent protein deacetylases that are involved in many physiological and pathological processes including aging and age-related diseases. These enzymes are conserved across species and SIRT1 is the closest mammalian orthologue of Sir2 of Saccharomyces cerevisiae...
April 9, 2017: Redox Biology
https://www.readbyqxmd.com/read/28403379/effect-of-resveratrol-on-walking-performance-in-older-people-with-peripheral-artery-disease-the-restore-randomized-clinical-trial
#4
Mary M McDermott, Christiaan Leeuwenburgh, Jack M Guralnik, Lu Tian, Robert Sufit, Lihui Zhao, Michael H Criqui, Melina R Kibbe, James H Stein, Donald Lloyd-Jones, Stephen D Anton, Tamar S Polonsky, Ying Gao, Rafael de Cabo, Luigi Ferrucci
Importance: Research shows that resveratrol, a sirtuin activator in red wine, improves exercise endurance and skeletal-muscle oxidative metabolism in animals and may enhance vascular function in humans. Resveratrol supplement sales exceed $30 million annually in the United States, but few data are available regarding its efficacy in humans. Objective: To determine whether resveratrol, 125 mg/d or 500 mg/d, improves the 6-minute walk performance in patients with peripheral artery disease (PAD)...
April 12, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28389425/lef1-mediated-mmp13-gene-expression-is-repressed-by-sirt1-in-human-chondrocytes
#5
Jinan Elayyan, Eun-Jin Lee, Odile Gabay, Christopher A Smith, Omar Qiq, Eli Reich, Ali Mobasheri, Yves Henrotin, Susan J Kimber, Mona Dvir-Ginzberg
Reduced SIRT1 activity and levels during osteoarthritis (OA), promotes gradual loss of cartilage. Loss of cartilage matrix is accompanied by an increase in matrix metalloproteinase (MMP) 13, partially because of enhanced LEF1 transcriptional activity. In this study, we assessed the role of SIRT1 in LEF1-mediated MMP13 gene expression in human OA chondrocytes. Results showed that MMP13 protein levels and enzymatic activity decreased significantly during SIRT1 overexpression or activation by resveratrol. Conversely, MMP13 gene expression was reduced in chondrocytes transfected with SIRT1 siRNA or treated with nicotinamide (NAM), a sirtuin inhibitor...
April 7, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28346848/cardiovascular-protective-effects-and-clinical-applications-of-resveratrol
#6
REVIEW
Sanghyun Cho, Kyung Namkoong, Minji Shin, Jueun Park, Eunyeong Yang, Jinsoo Ihm, Vu Thi Thu, Hyoung Kyu Kim, Jin Han
Resveratrol is a naturally occurring phenol that is generated by plant species following injury or attack by bacterial and fungal pathogens. This compound was first described as the French Paradox in 1992. Later in 2003, resveratrol was reported to activate sirtuins in yeast cells. Recent experimental studies have found that resveratrol offers a variety of benefits that include both anticarcinogenic and anti-inflammatory effects in addition to the ability to reverse obesity, attenuate hyperglycemia and hyperinsulinemia, protect heart and endothelial function, and increase the life span...
April 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28338809/resveratrol-derivative-btm-0512-mitigates-obesity-by-promoting-beige-remodeling-of-subcutaneous-preadipocytes
#7
Qingqing Li, Kuansong Wang, Yipeng Ma, Chunxiang Qin, Changsheng Dong, Ping Jin, Yan Wu, Xiaoming Xiong, Niansheng Li, Changping Hu, Jun Peng, Zhichun Yang
Recent studies revealed that sirtuin 1 (SIRT1) is involved in the regulation of energy metabolism and its agonist resveratrol showed anti-obesity effect. This study aims to determine whether BTM-0512, a novel derivative of resveratrol, acts as an antagonist of obesity and to explore its possible mechanisms. High-fat diet (HFD)-induced obese mice were intragastrically administered with BTM-0512 (5, 10, and 20 mg/kg/day) or resveratrol (10 mg/kg/day). It was found that the body weight, Lee's index, ratio of visceral adipose tissue (VAT) to body weight, and blood glucose were significantly reduced in BTM-0512-treated mice when compared with those in mice treated with resveratrol...
February 24, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28323907/resveratrol-inhibits-androgen-production-of-human-adrenocortical-h295r-cells-by-lowering-cyp17-and-cyp21-expression-and-activities
#8
Nesa Marti, Nadia Bouchoucha, Kay-Sara Sauter, Christa E Flück
Resveratrol, a natural compound found in grapes, became very popular for its suggested protective effects against aging. It was reported to have similar positive effects on the human metabolism as caloric restriction. Recently, positive effects of resveratrol on steroid biosynthesis in cell systems and in humans suffering from polycystic ovary syndrome have also been reported, but the exact mechanism of this action remains unknown. Sirtuins seem targeted by resveratrol to mediate its action on energy homeostasis...
2017: PloS One
https://www.readbyqxmd.com/read/28252007/alkylresorcinols-activate-sirt1-and-delay-ageing-in-drosophila-melanogaster
#9
Yasunari Kayashima, Yuki Katayanagi, Keiko Tanaka, Ryuta Fukutomi, Shigeru Hiramoto, Shinjiro Imai
Sirtuins are enzymes that catalyze NAD+ dependent protein deacetylation. The natural polyphenolic compound resveratrol received renewed interest when recent findings implicated resveratrol as a potent SIRT1 activator capable of mimicking the effects of calorie restriction. However, resveratrol directly interacts with fluorophore-containing peptide substrates. It was demonstrated that the SIRT1 activation of resveratrol is affected by the amino acid composition of the substrate. Resveratrol did increase the enzyme activity in cases in which hydrophobic amino acids are at the +1 position to the acetylated lysine in the substrate...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28242208/interplay-between-sirt1-and-hepatitis-b-virus-x-protein-in-the-activation-of-viral-transcription
#10
Jian-Jun Deng, Ka-Yiu Edwin Kong, Wei-Wei Gao, Hei-Man Vincent Tang, Vidyanath Chaudhary, Yun Cheng, Jie Zhou, Chi-Ping Chan, Danny Ka-Ho Wong, Man-Fung Yuen, Dong-Yan Jin
Hepatitis B virus (HBV) genome is organized into a minichromosome known as covalently closed circular DNA (cccDNA), which serves as the template for all viral transcripts. SIRT1 is an NAD(+)-dependent protein deacetylase which activates HBV transcription by promoting the activity of cellular transcription factors and coactivators. How SIRT1 and viral transactivator X protein (HBx) might affect each other remains to be clarified. In this study we show synergy and mutual dependence between SIRT1 and HBx in the activation of HBV transcription...
February 24, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28238848/resveratrol-protects-against-spinal-cord-injury-by-activating-autophagy-and-inhibiting-apoptosis-mediated-by-the-sirt1-ampk-signaling-pathway
#11
Haosen Zhao, Shurui Chen, Kai Gao, Zipeng Zhou, Chen Wang, Zhaoliang Shen, Yue Guo, Zhuo Li, Zhanghui Wan, Chang Liu, Xifan Mei
Spinal cord injury (SCI) is a devastating condition with few effective treatments. Resveratrol, a polyphenolic compound, has exhibited neuroprotective effects in many neurodegenerative diseases. However, the explicit effect and mechanism of resveratrol on SCI is still unclear. Adenosine 5' monophosphate-activated protein kinase (AMPK) and Sirtuin 1 (SIRT1), the downstream protein, play key roles in metabolizing of energy, resisting of resistance, and cellular protein homeostasis. In this study, we determined the effects of resveratrol on SCI and their potential relationship with SIRT1/AMPK signaling pathway, autophagy and apoptosis...
February 24, 2017: Neuroscience
https://www.readbyqxmd.com/read/28214861/sirt1-regulates-the-inflammatory-response-of-vascular-adventitial-fibroblasts-through-autophagy-and-related-signaling-pathway
#12
Wei-Rong Wang, Ting-Ting Li, Ting Jing, Yan-Xiang Li, Xiao-Feng Yang, Yan-Hao He, Wei Zhang, Rong Lin, Ji-Ye Zhang
BACKGROUND/AIMS: Autophagy is a lysosomal degradation pathway that is essential for cellular survival, differentiation, and homeostasis. Sirtuin 1 (SIRT1), a NAD+-dependent deacetylase, plays a pivotal role in modulation of autophagy. Recent studies found that autophagy was involved in the regulation of inflammatory response. In this study, we aimed to determine the effect of SIRT1 on autophagy and inflammation, and whether autophagy can regulate the inflammatory response in vascular adventitial fibroblasts (VAFs)...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28197625/different-effect-of-resveratrol-to-induction-of-apoptosis-depending-on-the-type-of-human-cancer-cells
#13
Michinori Takashina, Sayaka Inoue, Kei Tomihara, Kengo Tomita, Kohshi Hattori, Qing-Li Zhao, Tokiko Suzuki, Makoto Noguchi, Wakana Ohashi, Yuichi Hattori
The effect of resveratrol on various human cancer cells was investigated with special focus on apoptotic cell death, in an attempt to further characterize its mechanism of action. There were great differences in the anti-viability effect of resveratrol between different types of human cancer cells. While the inhibition of cell viability by resveratrol was marked in U937 and MOLT-4 leukemia cells, resveratrol moderately inhibited cell viability in MCF-7 breast, HepG2 liver, and A549 lung cancer cells, and the effect was slight on cell viability in Caco-2, HCT116, and SW480 colon cancer cells...
March 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28193316/polydatin-improves-the-developmental-competence-of-bovine-embryos-in-vitro-via-induction-of-sirtuin-1-sirt1
#14
Imran Khan, Sung Woo Kim, Kyung-Lim Lee, Seok-Hwan Song, Ayman Mesalam, M M R Chowdhury, Zia Uddin, Ki Hun Park, Il-Keun Kong
The aim of the present study was to investigate the beneficial effect of polydatin (PD), the glycoside form of resveratrol, on embryo development in vitro. Oocytes were aspirated from ovaries of Korean Hanwoo cows and cultured until Day 8 in a humidified atmosphere of 5% CO2 in air at 38.5°C. Protein and gene expression levels were determined through confocal microscopy and reverse transcription-polymerase chain reaction respectively, whereas the number of total and apoptotic cells in Day 8 blastocysts was determined using Hoechst 33342 staining and terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick end-labelling...
February 14, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28133883/carbon-monoxide-ameliorates-hepatic-ischemia-reperfusion-injury-via-sirtuin-1-mediated-deacetylation-of-high-mobility-group-box-1-in-rats
#15
Jian Sun, Enshuang Guo, Jiankun Yang, Yan Yang, Shenpei Liu, Jifa Hu, Xiaojing Jiang, Olaf Dirsch, Uta Dahmen, Wei Dong, Anding Liu
Carbon monoxide (CO) exerts protective effects on hepatic ischemia/reperfusion injury (IRI), but the underlying molecular mechanisms are not fully understood. High-mobility group box 1 (HMGB1) is an important mediator of injury and inflammation in hepatic IRI. Here, we investigated whether CO could attenuate hepatic IRI via inhibition of HMGB1 release, particularly through sirtuin 1 (SIRT1). CO was released by treatment with carbon monoxide-releasing molecule (CORM)-2. CORM-2-delivered CO ameliorated hepatic IRI, as indicated by lower serum aminotransferase levels, lower hepatic inflammatory responses, and less severe ischemia/reperfusion-associated histopathologic changes...
April 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28130161/protective-effect-of-resveratrol-against-inflammation-oxidative-stress-and-apoptosis-in-pancreas-of-aged-samp8-mice
#16
Cristina Ginés, Sara Cuesta, Roman Kireev, Cruz García, Lisa Rancan, Sergio D Paredes, Elena Vara, Jesús A F Tresguerres
Aging is a physiological state in which a progressive decline in organ functions is accompanied by the development of age-related diseases. Resveratrol supplementation has been shown to exert anti-inflammatory and antioxidant effects in various mammalian models of aging. Senescence-accelerated mice (SAM) are commonly used as animal models to investigate the aging process. In the present study, the effects of inflammation, oxidative stress and apoptosis in pancreas of two different types of SAM (SAMR1 or resistant to aging, and SAMP8 or prone to aging) have been analysed, as well as the effect of resveratrol administration (5mg/kg/day) on these parameters in the SAMP8 strain...
April 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28108221/sirtuin-1-independent-effects-of-resveratrol-in-ins-1e-%C3%AE-cells
#17
Cihan S Erdogan, Mathias Mørup-Lendal, Louise T Dalgaard, Ole Vang
Resveratrol (Resv), a natural polyphenol, is suggested to have various health benefits including improved insulin sensitivity. Resv activates Sirtuin (Sirt1) in several species and tissues. Sirt1 is a protein deacetylase with an important role in ageing, metabolism and β-cell function. In insulinoma β-cells (INS-1E), Resv is previously shown to improve glucose-stimulated insulin secretion in a Sirt1-dependent mechanism and to protect against β-cell dedifferentiation in non-human primates, while inducing hypertrophy in myoblasts...
February 25, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28101569/resveratrol-inhibits-adventitial-fibroblast-proliferation-and-induces-cell-apoptosis-through-the-sirt1-pathway
#18
Lin Ling, Shaohua Gu, Yan Cheng
Atherosclerosis is one of the most important causes of cardiovascular disease and studies have showed that adventitial fibroblasts, which are considered to be the most common cell type of the vascular adventitia, are involved in the development of early atherosclerotic plaques. Resveratrol is a plant polyphenolic compound confirmed to have anti‑atherosclerotic and cardioprotective effects. The aim of the present study was to investigate the effects of resveratrol on adventitial fibroblasts in vitro and to clarify the underlying mechanism...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28029409/serum-concentrations-and-gene-expression-of-sirtuin-1-in-healthy-and-slightly-overweight-subjects-after-caloric-restriction-or-resveratrol-supplementation-a-randomized-trial
#19
Antonio P Mansur, Alessandra Roggerio, Marisa F S Goes, Solange D Avakian, Dalila P Leal, Raul C Maranhão, Célia M C Strunz
BACKGROUND: Sirtuin 1 (Sirt1) plays an important role in vascular biology, and influences aspects of age-dependent atherosclerosis. In animals, the sirtuin system is strongly influenced by resveratrol and caloric restriction, but its expression in humans is controversial. This study investigated the effects of resveratrol and caloric restriction on Sirt1 serum concentrations and vascular biomarkers in a healthy human population. METHODS AND RESULTS: Forty-eight healthy participants (24 women) aged 55-65years were randomized to either 30days of resveratrol administration (500mg/day) or caloric restriction (1000cal/day)...
January 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28006924/in-vitro-and-in-vivo-experimental-hepatotoxic-models-in-liver-research-applications-to-the-assessment-of-potential-hepatoprotective-drugs
#20
H Farghali, M Kgalalelo Kemelo, L Wojnarová, N Kutinová Canová
This mini-review highlights our and others' experience about in vitro and in vivo models that are being used to follow up events of liver injuries under various hepatotoxic agents and potential hepatoprotective drugs. Due to limitations of the outcomes in each model, we focus primarily on two models. First, a developed perfusion method for isolated immobilized hepatocytes that improves the process of oxygenation and helps in end-product removal is of considerable value in improving cell maintenance. This cellular model is presented as a short-term research-scale laboratory bioreactor with various physiological, biochemical, molecular, toxicological and pharmacological applications...
December 21, 2016: Physiological Research
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