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https://www.readbyqxmd.com/read/29234485/regulation-of-sirtuin-mediated-protein-deacetylation-by-cardioprotective-phytochemicals
#1
REVIEW
Niria Treviño-Saldaña, Gerardo García-Rivas
Modulation of posttranslational modifications (PTMs), such as protein acetylation, is considered a novel therapeutic strategy to combat the development and progression of cardiovascular diseases. Protein hyperacetylation is associated with the development of numerous cardiovascular diseases, including atherosclerosis, hypertension, cardiac hypertrophy, and heart failure. In addition, decreased expression and activity of the deacetylases Sirt1, Sirt3, and Sirt6 have been linked to the development and progression of cardiac dysfunction...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29207192/resveratrol-attenuates-hydrogen-peroxide%C3%A2-induced-apoptosis-reactive-oxygen-species-generation-and-psgl%C3%A2-1-and-vwf-activation-in-human-umbilical-vein-endothelial-cells-potentially-via-mapk-signalling-pathways
#2
Zhenkai Lou, Xingguo Li, Xueling Zhao, Kaili Du, Xing Li, Bing Wang
Reactive oxygen species (ROS) are implicated in the pathogenesis of thrombosis. Studies have reported that resveratrol exhibits antioxidative activities, however, the effect and underlying mechanisms of resveratrol on venous thrombosis remain largely unknown. To investigate the effect of resveratrol on venous thrombosis and the underlying mechanisms, the present study investigated the effects of resveratrol on cell viability, apoptosis, ROS generation and the expression of thrombosis‑associated markers in human umbilical vein endothelial cells (HUVECs)...
November 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29202102/combinatorial-treatment-with-natural-compounds-in-prostate-cancer-inhibits-prostate-tumor-growth-and-leads-to-key-modulations-of-cancer-cell-metabolism
#3
Alessia Lodi, Achinto Saha, Xiyuan Lu, Bo Wang, Enrique Sentandreu, Meghan Collins, Mikhail G Kolonin, John DiGiovanni, Stefano Tiziani
High-throughput screening of a natural compound library was performed to identify the most efficacious combinatorial treatment on prostate cancer. Ursolic acid, curcumin and resveratrol were selected for further analyses and administered in vivo via the diet, either alone or in combination, in a mouse allograft model of prostate cancer. All possible combinations of these natural compounds produced synergistic effects on tumor size and weight, as predicted in the screens. A subsequent untargeted metabolomics and metabolic flux analysis using isotopically labeled glutamine indicated that the compound combinations modulated glutamine metabolism...
2017: NPJ Precision Oncology
https://www.readbyqxmd.com/read/29197967/effects-of-nutraceuticals-on-anaplastic-thyroid-cancer-cells
#4
Lorenzo Allegri, Francesca Rosignolo, Catia Mio, Sebastiano Filetti, Federica Baldan, Giuseppe Damante
PURPOSE: The anaplastic thyroid carcinoma (ATC) is the most aggressive thyroid cancer with a high mortality rate. Since nutraceuticals may exert beneficial effects on tumor biology, here, effects of four of these compounds [resveratrol, genistein, curcumin and epigallocatechin-3-gallate (EGCG)] on ATC cell lines were investigated. METHODS: Two ATC-derived cell lines were used: SW1736 and 8505C. Cell viability and in vitro aggressiveness was tested by MTT and soft agar assays...
December 2, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29183770/nutraceuticals-an-emerging-therapeutic-approach-against-the-pathogenesis-of-alzheimer-s-disease
#5
REVIEW
Pritam Sadhukhan, Sukanya Saha, Sayanta Dutta, Sushweta Mahalanobish, Parames C Sil
Alzheimer's disease (AD) is regarded as a progressive and devastating neurodegenerative disorder. In aged individuals, it is the most prevalent cause of dementia and is characterized by gradual loss of cognitive functions. In the last decade, numerous research works were undertaken to investigate the pathogenesis of AD. Although the etiology of AD is still not clear, several histopathological studies confirm prominent changes in the AD affected brains. The major changes include the formation of senile plaques and neurofibrillary tangles primarily owing to the deposition of amyloid β plaques (Aβ) and hyper-phosphorylation of tau protein...
November 25, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29179999/phytochemicals-as-inhibitors-of-nf-%C3%AE%C2%BAb-for-treatment-of-alzheimer-s-disease
#6
REVIEW
Ean-Jeong Seo, Nicolas Fischer, Thomas Efferth
Alzheimer's disease (AD) is the most prevalent form of dementia. The exact pathophysiology of this disease remains incompletely understood and safe and effective therapies are required. AD is highly correlated with neuroinflammation and oxidative stress in brain causing neuronal loss. Nuclear factor of activated B-cells (NF-κB) is involved in physiological inflammatory processes and thus representing a promising target for inflammation-based AD therapy. Phytochemicals are able to interfere with the NF-κB pathway...
November 24, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29171222/-molecular-regulative-mechanisms-of-aging-and-interventional-effects-of-chinese-herbal-medicine
#7
REVIEW
Bu-Hui Liu, Yi-Huang Gu, Yue Tu, Wei-Ming He, Wei Wu, Ying-Lu Liu, Zi-Yue Wan, Yi-Gang Wan
Aging is a gradual process during the loss of functions in cells,organs and tissues by time. The molecular mechanisms of aging-related theories include the classical ones such as telomere,oxygen radical and nonenzymatic glycosylation,as well as the newly proposed ones such as DNA methylation,mitochondrial DNA (mtDNA)and autophagy. The latest study showed the anti-aging effect of autophagy in hematopoietic stem cells. In recent years,based on the molecular regulative mechanisms of aging,a number of the promising anti-aging drugs have been found,including nicotinamide mononucleotide(NMN)and FOXO4-DRI,a peptide of anti-aging...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29168653/utilizing-biomarkers-in-colorectal-cancer-an-interview-with-ajay-goel
#8
Ajay Goel
Ajay Goel, PhD, is a Professor and Director, Center for Gastrointestinal Research, and Director, Center for Translational Genomics and Oncology, at the Baylor Scott & White Research Institute, Baylor University Medical Center in Dallas, Texas. Dr Goel has spent more than 20 years researching cancer and has been the lead author or contributor to over 240 scientific articles published in peer-reviewed international journals and several book chapters. He is also a primary inventor on more than 15 international patents aimed at developing various biomarkers for the diagnosis, prognosis and prediction of gastrointestinal cancers...
November 23, 2017: Future Oncology
https://www.readbyqxmd.com/read/29141966/nutritional-factors-affecting-adult-neurogenesis-and-cognitive-function
#9
REVIEW
Shibu M Poulose, Marshall G Miller, Tammy Scott, Barbara Shukitt-Hale
Adult neurogenesis, a complex process by which stem cells in the hippocampal brain region differentiate and proliferate into new neurons and other resident brain cells, is known to be affected by many intrinsic and extrinsic factors, including diet. Neurogenesis plays a critical role in neural plasticity, brain homeostasis, and maintenance in the central nervous system and is a crucial factor in preserving the cognitive function and repair of damaged brain cells affected by aging and brain disorders. Intrinsic factors such as aging, neuroinflammation, oxidative stress, and brain injury, as well as lifestyle factors such as high-fat and high-sugar diets and alcohol and opioid addiction, negatively affect adult neurogenesis...
November 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/29138673/the-beneficial-effects-of-quercetin-curcumin-and-resveratrol-in-obesity
#10
REVIEW
Yueshui Zhao, Bo Chen, Jing Shen, Lin Wan, Yinxin Zhu, Tao Yi, Zhangang Xiao
Over the past two decades, obesity has been one of the major public health concerns in most countries. In the search for new molecules that could be used for the treatment of obesity, good perspectives have been opened up for polyphenols, a class of natural bioactive phytochemicals. Experimental and limited clinical trial evidence supports that some polyphenols such as quercetin, curcumin, and resveratrol have potential benefit functions on obesity treatment. This brief review focuses on the main functions of the above-named polyphenols on adipose tissue...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29113871/oxidative-stress-and-dietary-phytochemicals-role-in-cancer-chemoprevention-and-treatment
#11
Shireen Chikara, Lokesh Dalasanur Nagaprashantha, Jyotsana Singhal, David Horne, Sanjay Awasthi, Sharad S Singhal
Several epidemiological observations have shown an inverse relation between consumption of plant-based foods, rich in phytochemicals, and incidence of cancer. Phytochemicals, secondary plant metabolites, via their antioxidant property play a key role in cancer chemoprevention by suppressing oxidative stress-induced DNA damage. In addition, they modulate several oxidative stress-mediated signaling pathways through their anti-oxidant effects, and ultimately protect cells from undergoing molecular changes that trigger carcinogenesis...
January 28, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29103764/additive-cytotoxic-effects-of-radiation-and-mtor-inhibitors-in-a-cervical-cancer-cell-line
#12
Daniele Xavier Assad, Gabriel Alvares Borges, Samuel Ramalho Avelino, Eliete Neves Silva Guerra
The PI3K/AKT/mTOR signaling pathway is frequently activated in HPV-positive cervical squamous cell cancer (CC). This study investigated the biological effects of mTOR inhibitors associated with radiotherapy in a CC cell line (HeLa). A human keratinocyte cell line (HaCaT) was used as control. Temsirolimus, everolimus, resveratrol, curcumin and epigallocatechin gallate (EGCG) were the mTOR inhibitors assessed. The 50% cell cytotoxicity rate (CC50) for each treatment was determined by MTT cell viability assay...
November 2, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29049987/isoflavones-induce-bex2-dependent-autophagy-to-prevent-atr-induced-neurotoxicity-in-sh-sy5y-cells
#13
Peng Li, Kun Ma, Hao-Yu Wu, Yan-Ping Wu, Bai-Xiang Li
BACKGROUND/AIMS: Atrazine (ATR) is a broad-spectrum herbicide in wide use around the world. However, ATR is neurotoxic and can cause cell death in dopaminergic neurons, leading to neurodegenerative disorders. Autophagy is the basic cellular catabolic process involving the degradation of proteins and damaged organelles. Studies have shown that certain plant compounds can induce autophagy and prevent neuronal cell death. This prompted us to investigate plant compounds that might reduce the neurotoxic effects of ATR...
October 19, 2017: Cellular Physiology and Biochemistry
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
#14
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...
2017: Journal of Nutrigenetics and Nutrigenomics
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
#15
Yiming Wang, David C Latshaw, Carol K Hall
Although some naturally occurring polyphenols have been found to inhibit amyloid β (Aβ) fibril formation and reduce neuron cell toxicity in vitro, their exact inhibitory mechanism is unknown. In this work, discontinuous molecular dynamics 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, and (4) prevent the growth of Aβ(17-36) protofilament...
October 13, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29019428/binding-analysis-of-antioxidant-polyphenols-with-pamam-nanoparticles
#16
P Chanphai, H A Tajmir-Riahi
Dietary polyphenols are abundant micronutrients in our diet and paly major role in prevention of degenerative diseases. The binding efficacy of antioxidant polyphenols resveratrol, genistein and curcumin with PAMAM-G3 and PAMAM-G4 nanoparticles was investigated in aqueous solution at physiological conditions, using multiple spectroscopic methods, TEM images and docking studies. The polyphenol bindings are via hydrophilic, hydrophobic and H-bonding contacts with resveratrol forming more stable conjugates. As PAMAM size increased the loading efficacy and the stability of polyphenol-polymer conjugates were increased...
October 11, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29017913/the-use-of-natural-compounds-for-the-targeting-and-chemoprevention-of-ovarian-cancer
#17
Francesca Pistollato, Ruben Calderón Iglesias, Roberto Ruiz, Silvia Aparicio, Jorge Crespo, Luis Dzul Lopez, Francesca Giampieri, Maurizio Battino
Among gynaecological cancers, ovarian cancer represents the leading cause of death in women. Current treatment for ovarian cancer entails surgery followed by combined chemotherapy with platinum and taxane, which are associated, particularly cisplatin, with severe side effects. While this treatment approach appears to be initially effective in a high number of patients, nearly 70% of them suffer a relapse within a few months after initial treatment. Therefore, more effective and better-tolerated treatment options are clearly needed...
October 7, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28989041/deciphering-molecular-mechanisms-of-arginine-deiminase-based-therapy-comparative-response-analysis-in-paired-human-primary-and-recurrent-glioblastomas
#18
Claudia Maletzki, Yvonne Rosche, Christin Riess, Aline Scholz, Doreen William, Carl Friedrich Classen, Bernd Kreikemeyer, Michael Linnebacher, Tomas Fiedler
Arginine auxotrophy constitutes the Achilles' heel for several tumors, among them glioblastoma multiforme (GBM). Hence, arginine-depleting enzymes such as arginine deiminase (ADI) from Streptococcus pyogenes are promising for treatment of primary and maybe even refractory GBM. Based on our previous study in which ADI-susceptibility was shown on a panel of patient-derived GBM cell lines, we here aimed at deciphering underlying molecular mechanisms of ADI-mediated growth inhibition. We found that ADI (35 mU/mL) initially induces a cellular stress-response that is characterized by upregulation of genes primarily belonging to the heat-shock protein family...
October 5, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28988970/effects-of-berberine-curcumin-resveratrol-alone-and-in-combination-with-chemotherapeutic-drugs-and-signal-transduction-inhibitors-on-cancer-cells-power-of-nutraceuticals
#19
James A McCubrey, Stephen L Abrams, Kvin Lertpiriyapong, Lucio Cocco, Stefano Ratti, Alberto M Martelli, Saverio Candido, Massimo Libra, Ramiro M Murata, Pedro L Rosalen, Paolo Lombardi, Giuseppe Montalto, Melchiorre Cervello, Agnieszka Gizak, Dariusz Rakus, Linda S Steelman
Over the past fifty years, society has become aware of the importance of a healthy diet in terms of human fitness and longevity. More recently, the concept of the beneficial effects of certain components of our diet and other compounds, that are consumed often by different cultures in various parts of the world, has become apparent. These "healthy" components of our diet are often referred to as nutraceuticals and they can prevent/suppress: aging, bacterial, fungal and viral infections, diabetes, inflammation, metabolic disorders and cardiovascular diseases and have other health-enhancing effects...
October 3, 2017: Advances in Biological Regulation
https://www.readbyqxmd.com/read/28987600/lipid-lowering-agents-of-natural-origin-an-account-of-some-promising-chemotypes
#20
REVIEW
Suriya P Singh, Koneni V Sashidhara
The role of natural products in the drug development and discovery has been phenomenal. There has been an enormous interest in exploring all possible natural sources to identify structures exhibiting pronounced hypolipidemic activity albeit with no toxicity. The present review describes the profile of some interesting naturally occurring compounds and their derivatives as potential hypolipidemic agents. Some of the interesting natural chemotypes that can control the increased levels of plasma lipids and discussed in this review are compactin, lovastatin, gugglesterone, berberine, lupeol, phytol, polyprenol, aegeline, 4-hydroxyisoleucine, α-asarone, resveratrol, esculeoside A, swertiamarin, rutin, saucerneol B, curcumin and a clerodane diterpene...
November 10, 2017: European Journal of Medicinal Chemistry
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