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https://www.readbyqxmd.com/read/29040973/sulforaphane-and-epigallocatechin-gallate-restore-estrogen-receptor-expression-by-modulating-epigenetic-events-in-the-breast-cancer-cell-line-mda-mb-231-a-systematic-review-and-meta-analysis
#1
Vincenza Gianfredi, Samuele Vannini, Massimo Moretti, Milena Villarini, Nicola Luigi Bragazzi, Alberto Izzotti, Daniele Nucci
BACKGROUND/AIMS: Epigenetics refers to modifications in gene activity and expression without alteration at the DNA sequence. Environment and diet could influence gene expression. Diet modifications may be meaningful in preventing and treating chronic diseases, cancer included. Dietary bioactive compounds, such as polyphenols (e.g., curcumin, resveratrol, or epigallocatechin gallate [EGCG]) or isothiocyanate (e.g., sulforaphane [SFN]), can regulate histone acetylation. The aim of this systematic review and meta-analysis was to evaluate the effect of SFN and EGCG on breast cancer (BC) cells cultured in vitro...
October 18, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/29040542/high-adherence-to-the-mediterranean-diet-is-associated-with-cardiovascular-protection-in-higher-but-not-in-lower-socioeconomic-groups-prospective-findings-from-the-moli-sani-study
#2
Marialaura Bonaccio, Augusto Di Castelnuovo, George Pounis, Simona Costanzo, Mariarosaria Persichillo, Chiara Cerletti, Maria Benedetta Donati, Giovanni de Gaetano, Licia Iacoviello
Background: It is uncertain whether the cardiovascular benefits associated with Mediterranean diet (MD) may differ across socioeconomic groups. Methods: Prospective analysis on 18991 men and women aged ≥35 years from the general population of the Moli-sani cohort (Italy). Adherence to MD was appraised by the Mediterranean diet score (MDS). Household income (euros/year) and educational level were used as indicators of socioeconomic status. Hazard ratios (HR) were calculated by multivariable Cox proportional hazard models...
August 1, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29040025/effect-of-chronic-consumption-of-pistachios-pistacia-vera-l-on-glucose-metabolism-in-pre-diabetics-and-type-2-diabetics-a-systematic-review
#3
Priscila Vaz de Melo Ribeiro, Alessandra da Silva, Alinne Paula de Almeida, Helen Hermana Miranda Hermsdorff, Rita de Cássia Gonçalves Alfenas
Pistachio is a nut with high polyunsaturated fatty acids (PUFA), monounsaturated fatty acids (MUFA), polyphenols and carotenoids content, and the synergism between these compounds appears to affect glucose metabolism. In this systematic review we analyzed studies in which the effect of chronic consumption of pistachio on markers of glucose metabolism was evaluated in pre-diabetic and type 2 diabetics. We used the PubMed, Scopus, Cochrane and Lilacs databases. The research terms used were pistachio, pre-diabetes, type 2 diabetes mellitus, insulin resistance, blood glucose, hyperglycemia and glycated hemoglobin (HbA1c)...
October 17, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29036903/resveratrol-and-amyloid-beta-mechanistic-insights
#4
REVIEW
Yongming Jia, Na Wang, Xuewei Liu
The amyloid-beta (Aβ) hypothesis that dyshomeostasis between Aβ production and clearance is a very early, key molecular factor in the etiology of Alzheimer's disease (AD) has been proposed and examined in the AD research field. Scientists have focused on seeking natural products or drugs to influence the dynamic equilibrium of Aβ, targeting production and clearance of Aβ. There is emerging evidence that resveratrol (Res), a naturally occurring polyphenol mainly found in grapes and red wine, acts on AD in numerous in vivo and in vitro models...
October 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29034188/validation-of-therapeutic-anti-inflammatory-potential-of-arjuna-ksheera-paka-a-traditional-ayurvedic-formulation-of-terminalia-arjuna
#5
Nivedita Dube, Chetan Nimgulkar, Dinesh Kumar Bharatraj
Arjuna Ksheera Paka (AKP), a traditional Ayurvedic formulation of Terminalia arjuna (T. arjuna) bark powder is used for its cardioprotective effects. However, its anti-inflammatory efficacy remained unexplored. In the present study, AKP was prepared in cow milk (as per standard Ayurvedic procedure) and compared with standard hydroalcoholic extract (HA) of T. arjuna. The extracts were analyzed for gross phytoconstituents levels, and their antioxidant activity was assayed by DPPH free radical scavenging activity and inhibition of lipid peroxidation...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29034186/medicinal-biological-and-phytochemical-properties-of-gentiana-species
#6
REVIEW
Fatemeh Mirzaee, Amirsaeed Hosseini, Hossein Bakhshi Jouybari, Ali Davoodi, Mohammad Azadbakht
Gentiana, a cosmopolitan and important genus of the Gentianaceae family, comprises 400 species distributed among the world. Based on the studies of Iranian traditional medicine texts, there are some promising bioactivities for this genus that is unknown in modern medicine and some of them are still the basis of new remedies. In traditional medicine texts, Gentiana's different exclusive forms of preparations are effective for treatment of some disorders such as menstrual over-bleeding, conjunctivitis, vitiligo, animals venom poisoning, injuries, infected wounds, pain and swelling of liver, spleen, stomach and sprains of muscles...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29032930/3-hydroxy-3-4-dimethoxyflavone-blocks-tubulin-polymerization-and-is-a-potent-apoptotic-inducer-in-human-sk-mel-1-melanoma-cells
#7
Francisco Estévez-Sarmiento, Mercedes Said, Ignacio Brouard, Francisco León, Celina García, José Quintana, Francisco Estévez
Flavonoids are naturally occurring polyphenolic compounds and are among the most promising anticancer agents. A series of flavonols and their 3-methyl ether derivatives were synthesized and assessed for cytotoxicity. It was found that 3'-hydroxy-3,4'-dimethoxyflavone (flavonoid 7a) displayed strong cytotoxicity against human SK-MEL-1 melanoma cells and blocked tubulin polymerization, but had no significant cytotoxic effects against quiescent or proliferating human peripheral blood mononuclear cells. Our analyses showed that flavonoid 7a induces G2-M cell cycle arrest and apoptosis in melanoma cells which is associated with cytochrome c release and activation of both extrinsic and intrinsic apoptotic pathways of cell death...
October 3, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29032085/fabrication-and-characterization-of-tea-polyphenols-loaded-pullulan-cmc-electrospun-nanofiber-for-fruit-preservation
#8
Ping Shao, Ben Niu, Hangjun Chen, Peilong Sun
Edible packaging films using polymer for food preservation have been developed for a long time. In this study, the effects of different concentrations (0.5%, 1%, 1.5%, w/v) of tea polyphenols incorporated into pullulan-Carboxymethylcellulose sodium (Pul-CMC) solutions on electrospun nanofiber films were evaluated. The fiber size distribution was characterized by scanning electron microscopy. The morphological features of nanofibers were modulated through adjusting process parameters (e.g. concentration of polymer solution, applied voltage and feeding rate)...
October 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29032047/reactivation-of-peroxidase-activity-in-human-saliva-samples-by-polyphenols
#9
Jana Gau, Jürgen Arnhold, Jörg Flemmig
OBJECTIVES: The enzyme lactoperoxidase (LPO), which is released into several body fluids like saliva, is an essential part to maintain the oral bacterial homeostasis by catalysing the oxidation of thiocyanate (SCN(-)) to hypo-thiocyanite ((-)OSCN). The formation of unreactive redox intermediates (like Compound II) leads to a decreased pseudo-halogenating enzyme activity, which is associated with a higher risk for oral infections. According to former studies with bovine LPO selected flavonoids were tested in respect to their potential to reactivate the enzymatic activity in a more physiological, human salivary system...
October 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29031922/catechin-loaded-plga-submicron-sized-fibers-reduce-levels-of-reactive-oxygen-species-induced-by-mwcnt-in-vitro
#10
Roxana E Ghitescu, Ana Maria Popa, Angela Schipanski, Cordula Hirsch, Gökce Yazgan, Valentin I Popa, René M Rossi, Katharina Maniura-Weber, Giuseppino Fortunato
Reactive oxygen species (ROS) are common products of normal aerobic cellular metabolism, but high levels of ROS lead to oxidative stress and cellular damage. Therefore, effective antioxidant therapies are needed to prevent ROS overproduction. This study reports the development of poly(l-lactide-co-glycolide) (PLGA) bicomponent fibers loaded with selected amounts of the natural polyphenolic antioxidant catechin. Thereby a novel route based on emulsion electrospinning is investigated to obtain tailored and sustained release rates for chatechin...
October 11, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29031698/aggregation-of-a%C3%AE-17-36-in-the-presence-of-naturally-occurring-phenolic-inhibitors-using-coarse-grained-simulations
#11
Yiming Wang, David C Latshaw, Carol K Hall
Although some naturally-occurring polyphenols have been found to inhibit amyloid β fibril formation and reduce neuron cell toxicity in vitro, their exact inhibitory mechanism is unknown. In this work, discontinuous molecular dynamics (DMD) combined with the PRIME20 force field and a newly-built inhibitor model are performed to examine the effect of vanillin, resveratrol, curcumin and epigallocatechin-3-gallate (EGCG) on the aggregation of Aβ(17-36) peptides. Four sets of peptide/inhibitor simulations are performed in which inhibitors: (1) bind to Aβ(17-36) monomer; (2) interfere with Aβ(17-36) oligomerization; (3) disrupt a pre-formed Aβ(17-36) protofilament; (4) prevent the growth of Aβ(17-36) protofilament...
October 12, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29029603/the-pathophysiological-role-of-mitochondrial-oxidative-stress-in-lung-diseases
#12
REVIEW
Xiaojing Liu, Zhihong Chen
Mitochondria are critically involved in reactive oxygen species (ROS)-dependent lung diseases, such as lung fibrosis, asbestos, chronic airway diseases and lung cancer. Mitochondrial DNA (mtDNA) encodes mitochondrial proteins and is more sensitive to oxidants than nuclear DNA. Damage to mtDNA causes mitochondrial dysfunction, including electron transport chain impairment and mitochondrial membrane potential loss. Furthermore, damaged mtDNA also acts as a damage-associated molecular pattern (DAMP) that drives inflammatory and immune responses...
October 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29029547/nanoformulations-of-curcumin-an-emerging-paradigm-for-improved-remedial-application
#13
REVIEW
Meeta Gera, Neelesh Sharma, Mrinmoy Ghosh, Do Luong Huynh, Sung Jin Lee, Taesun Min, Taeho Kwon, Dong Kee Jeong
Curcumin is a natural polyphenol and essential curcuminoid derived from the rhizome of the medicinal plant Curcuma longa (L.) is universally acknowledged as "Wonder drug of life". It is a vital consumable and restorative herb, commonly keened for several ailments such as cancer, arthritis, pain, bruises, gastrointestinal quandaries, swelling and much more. Despite its enormous curative potential, the poor aqueous solubility and consequently, minimal systemic bioavailability with rapid degradation are some of the major factors which restrict the utilization of curcumin at medical perspective...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29028844/a-polyphenol-enriched-diet-and-ascaris-suum-infection-modulate-mucosal-immune-responses-and-gut-microbiota-composition-in-pigs
#14
Andrew R Williams, Lukasz Krych, Hajar Fauzan Ahmad, Peter Nejsum, Kerstin Skovgaard, Dennis S Nielsen, Stig M Thamsborg
Polyphenols are a class of bioactive plant secondary metabolites that are thought to have beneficial effects on gut health, such as modulation of mucosal immune and inflammatory responses and regulation of parasite burdens. Here, we examined the interactions between a polyphenol-rich diet supplement and infection with the enteric nematode Ascaris suum in pigs. Pigs were fed either a basal diet or the same diet supplemented with grape pomace (GP), an industrial by-product rich in polyphenols such as oligomeric proanthocyanidins...
2017: PloS One
https://www.readbyqxmd.com/read/29028073/polyphenol-epigallocatechin-3-gallate-alleviates-high-glucose-induced-h9c2-cell-damage-through-pi3k-akt-pathway
#15
Z-M Wang, C-Y Zhong, G-J Zhao
OBJECTIVE: The aim of this work was to study the protective effect of polyphenol epigallocatechin-3-gallate (EGCG) on high glucose-induced oxidative damage of H9C2 cells and to investigate the relationship between this effect and phosphatidyl inositol 3 kinase-serine/threonine kinase (P13K/Akt) signal transduction pathway. MATERIALS AND METHODS: H9C2 cells were used as objects of study, 350 mM glucose serum-free medium was used as the high glucose molding condition, and LY294002 (10 μM) was used as the PI3K/Akt inhibitor...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29027961/dosis-facit-sanitatem-concentration-dependent-effects-of-resveratrol-on-mitochondria
#16
REVIEW
Corina T Madreiter-Sokolowski, Armin A Sokolowski, Wolfgang F Graier
The naturally occurring polyphenol, resveratrol (RSV), is known for a broad range of actions. These include a positive impact on lifespan and health, but also pro-apoptotic anti-cancer properties. Interestingly, cell culture experiments have revealed a strong impact of RSV on mitochondrial function. The compound was demonstrated to affect mitochondrial respiration, structure and mass of mitochondria as well as mitochondrial membrane potential and, ultimately, mitochondria-associated cell death pathways. Notably, the mitochondrial effects of RSV show a very strict and remarkable concentration dependency: At low concentrations, RSV (<50 μM) fosters cellular antioxidant defense mechanisms, activates AMP-activated protein kinase (AMPK)- and sirtuin 1 (SIRT1)-linked pathways and enhances mitochondrial network formation...
October 13, 2017: Nutrients
https://www.readbyqxmd.com/read/29027934/angiotensin-i-converting-enzyme-ace-inhibitory-activity-antioxidant-properties-phenolic-content-and-amino-acid-profiles-of-fucus-spiralis-l-protein-hydrolysate-fractions
#17
Lisete Paiva, Elisabete Lima, Ana Isabel Neto, José Baptista
Food protein-derived hydrolysates with multi-bioactivities such as antihypertensive and antioxidant properties have recently received special attention since both activities can play significant roles in preventing cardiovascular diseases. This study reports, for the first time, the angiotensin I-converting enzyme (ACE)-inhibition and antioxidant properties of ultrafiltrate fractions (UF) with different molecular weight ranges (<1, 1-3 and ≥3 kDa) obtained from Fucus spiralis protein hydrolysate (FSPH) digested with cellulase-bromelain...
October 13, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29027929/procyanidin-b2-protects-neurons-from-oxidative-nitrosative-and-excitotoxic-stress
#18
Taylor C Sutcliffe, Aimee N Winter, Noelle C Punessen, Daniel A Linseman
The aberrant generation of oxygen and nitrogen free radicals can cause severe damage to key cellular components, resulting in cell apoptosis. Similarly, excitotoxicity leads to protease activation and mitochondrial dysfunction, which subsequently causes cell death. Each of these factors play critical roles in the neuronal cell death underlying various neurodegenerative diseases. Procyanidin B2 (PB2) is a naturally occurring polyphenolic compound found in high concentrations in cocoa, apples, and grapes. Here, we examine the neuroprotective effects of PB2 in primary cultures of rat cerebellar granule neurons (CGNs) exposed to various stressors...
October 13, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29027275/multifaceted-supramolecular-interactions-from-c-methylresorcin-4-arene-lead-to-an-enhancement-in-in-vitro-antibacterial-activity-of-gatifloxacin
#19
Arnab Dawn, Harish Chandra, Chandra Ade-Browne, Jagjit Yadav, Harshita Kumari
Mimicking the antibacterial activity of polyphenols in synthetic systems is an attractive approach for the development of novel active pharmaceutical ingredients. Resorcinarenes represent a class of polyphenols which have been exploited for decades for their attractive chemical scaffold suitable for forming host-guest complexes with hydrophobic guest molecules. However, the polyphenolic character of resorcinarenes, which could be a potential asset to the pharmaceutical industry, have been least exploited. The present work represents an unprecedented interplay of chemical nature of resorcinarene conferring an antimicrobial activity together with its ability to interact with an antibacterial drug gatifloxacin, improving the overall antibacterial activity...
October 12, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29026695/comparison-between-antibacterial-effect-of-chlorhexidine-0-2-and-different-concentrations-of-cyperus-rotundus-extract-an-in-vitro-study
#20
Roza Haghgoo, Majid Mehran, Hamideh Farajian Zadeh, Elaheh Afshari, Nafiseh Farajian Zadeh
AIMS AND OBJECTIVES: Modern methods of caries prevention concentrated on natural ingredients usage such as probiotics and polyphenols that are safer for young children with Streptococcus mutans inhibitory properties. The purpose of this study was to compare antibacterial effects of different concentration of Cyperus rotundus extract and chlorhexidine (CHX) 0.2% mouthwash on S. mutans and Lactobacillus acidophilus. MATERIALS AND METHODS: In this in vitro study, the antibacterial effectiveness of the C...
September 2017: Journal of International Society of Preventive & Community Dentistry
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