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https://www.readbyqxmd.com/read/29165404/benefits-of-nut-consumption-on-insulin-resistance-and-cardiovascular-risk-factors-multiple-potential-mechanisms-of-actions
#1
REVIEW
Yoona Kim, Jennifer B Keogh, Peter M Clifton
Epidemiological and clinical studies have indicated that nut consumption could be a healthy dietary strategy to prevent and treat type 2 diabetes (T2DM) and related cardiovascular disease (CVD). The objective of this review is to examine the potential mechanisms of action of nuts addressing effects on glycemic control, weight management, energy balance, appetite, gut microbiota modification, lipid metabolism, oxidative stress, inflammation, endothelial function and blood pressure with a focus on data from both animal and human studies...
November 22, 2017: Nutrients
https://www.readbyqxmd.com/read/29164519/atorvastatin-prevents-early-oxidative-events-and-modulates-inflammatory-mediators-in-the-striatum-following-intranasal-1-methyl-4-phenyl-1-2-3-6-tetrahydropyridine-mptp-administration-in-rats
#2
Naiani F Marques, Adalberto A Castro, Gianni Mancini, Fernanda L Rocha, Adair R S Santos, Rui D Prediger, Andreza Fabro De Bem, Carla I Tasca
Atorvastatin is a 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor with cholesterol-lowering, anti-inflammatory, and antioxidant properties. Increasing evidence show atorvastatin acts as a protective agent against insults in the central nervous system (CNS). The regular use of statins has been associated with a reduced risk of Parkinson's disease (PD) development. Here, we evaluated early events involved in the neurotoxicity induced by intranasal (i.n.) infusion of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in rats and the potential of atorvastatin to prevent these early toxic events...
November 21, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29162465/linoleic-acid-enhance-the-production-of-moncolin-k-and-red-pigments-in-monascus-ruber-by-activating-mokh-and-moka-and-by-accelerating-camp-pka-pathway
#3
Jing Huang, NanQing Liao, HaoMing Li
Monacolin K, an inhibitor of HMG-CoA reductase, is a secondary metabolite synthesized by polyketide synthases (PKS) from Monascus ruber. The mokH gene encoding Zn(II)2Cys6 binding protein and mokA gene encoding polyketide synthase are presumed to activate monacolin K production. In this study, linoleic acid could be a quorum sensing signaling molecule to increase monacolin K production in the cyclic AMP(cAMP)-protein kinase A(PKA) signaling pathway. Analysis of the PKA activity and the cAMP concentration shows that linoleic acid could increase cAMP concentration and activate PKA...
November 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29158265/topical-mevastatin-promotes-wound-healing-by-inhibiting-the-transcription-factor-c-myc-via-the-glucocorticoid-receptor-and-the-long-noncoding-rna-gas5
#4
Andrew P Sawaya, Irena Pastar, Olivera Stojadinovic, Sonja Lazovic, Stephen C Davis, Joel Gil, Robert S Kirsner, Marjana Tomic-Canic
Diabetic foot ulcers (DFU), a life-threatening complication of diabetes mellitus, have limited treatment options, often resulting in amputations. HMG-CoA reductase inhibitors such as statins are cholesterol-reducing agents that may provide a new therapeutic option. Statins target the cholesterol pathway and block the synthesis of the wound-healing inhibitors farnesyl pyrophosphate (FPP) and cortisol, ligands for the glucocorticoid receptor (GR). Here we demonstrate that the naturally occurring statin, mevastatin, reverses FPP's effects and promotes healing by using in vitro wound healing assays, human ex vivo and porcine in vivo wound models, and DFU tissue...
November 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29155848/an-electronic-health-record-based-model-predicts-statin-adherence-ldl-cholesterol-and-cardiovascular-disease-in-the-united-states-military-health-system
#5
Joseph E Lucas, Taylor C Bazemore, Celan Alo, Patrick B Monahan, Deepak Voora
HMG-CoA reductase inhibitors (or "statins") are important and commonly used medications to lower cholesterol and prevent cardiovascular disease. Nearly half of patients stop taking statin medications one year after they are prescribed leading to higher cholesterol, increased cardiovascular risk, and costs due to excess hospitalizations. Identifying which patients are at highest risk for not adhering to long-term statin therapy is an important step towards individualizing interventions to improve adherence. Electronic health records (EHR) are an increasingly common source of data that are challenging to analyze but have potential for generating more accurate predictions of disease risk...
2017: PloS One
https://www.readbyqxmd.com/read/29151274/effect-of-hmg-coa-reductase-inhibitors-on-the-development-of-chronic-lung-allograft-dysfunction
#6
Amanda Szczepanik, Amanda Hulbert, Hui-Jie Lee, Clark Benedetti, Laurie Snyder, Jennifer Byrns
Lung transplant recipients (LR) have a reduced median five-year survival of approximately 55% primarily due to chronic lung allograft dysfunction (CLAD). Statins have anti-inflammatory and immunomodulatory effects that may facilitate CLAD prevention. This study sought to evaluate statin effect on CLAD development. Adult bilateral LR from January 2004-October 2013 were included. Statin group included recipients with early statin use and continued for minimum 6 months. Propensity score matching was performed for age, gender and native lung disease to select matched non-statin group...
November 19, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/29150805/aspergillus-terreus-treated-rice-straw-suppresses-methane-production-and-enhances-feed-digestibility-in-goats
#7
P Mohd Azlan, M F Jahromi, M O Ariff, M Ebrahimi, S C L Candyrine, J B Liang
The objectives of this study were to test the efficacy of producing lovastatin in rice straw treated with Aspergillus terreus in larger laboratory scale following the procedure previously reported and to investigate the effectiveness of the treated rice straw containing lovastatin on methane mitigation in goats. The concentration of lovastatin in the treated rice straw was 0.69 ± 0.05 g/kg dry matter (DM) rice straw. Our results showed that supplementation of lovastatin at 4.14 mg/kg BW reduced methane production by 32% while improving the DM digestibility by 13% (P < 0...
November 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29147490/hypolipidemic-effects-of-total-flavonoide-extracted-from-the-leaves-of-actinidiakolomikta-in-rats-fed-a-high-fat-diet
#8
Zhenxiang Yu, Huali Xu, Xiaofeng Yu, Dayun Sui, Guangzhu Lin
Objectives: This study was to investigate the antihyperlipidemic and antioxidant effect of total flavonoid extract from Actinidiakolomikta (TFAK) in hyperlipidemia induced by a high-fat diet. Materials and Methods: Male SD rats were randomly divided into 6 groups: normal group, model (hyperlipidemic diet) group, hyperlipedemic diet supplemented with TFAK (50, 100 and 200 mg/kg) and simvastatin (30 mg/kg) groups. The rats were administrated TFAK by oral for 28 days...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29139594/a-multi-perspective-approach-to-solvent-regulation-of-enzymatic-activity-hmg-coa-reductase
#9
Frank Schulz, Michael Dirkmann, Javier Iglesias, Victor Muñoz, Pandian Sokkar, Christoph Rumancev, Andreas von Gundlach, Oktavian Krenczyk, Tobias Vöpel, Julia Nowack, Martin A Schroer, Simon Ebbinghaus, Christian Herrmann, Axel Rosenhahn, Elsa Sanchez-Garcia
HMG-CoA reductase was investigated in different organic co-solvents using kinetic and calorimetric measurements, molecular dynamics simulations and small-angle x-ray scattering. The combined experimental and theoretical techniques were essential to complement each other's limitations in the investigation of the complex interaction pattern between the enzyme and the different solvent types and concentrations. In this way, we could elucidate the underlying mechanisms for the loss of enzyme activity in different water-miscible solvents...
November 15, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29132077/lovastatin-analogues-and-other-metabolites-from-soil-derived-aspergillus-terreus-yim-ph30711
#10
Qiang Wang, Ya-Bin Yang, Xue-Qiong Yang, Cui-Ping Miao, Yi-Qing Li, Shi-Xi Liu, Na Luo, Zhong-Tao Ding, Li-Xing Zhao
Eight previously undescribed metabolites including of lovastatin analogues, a pair of diastereoisomers, a cyclopentenone dimer, and three polyketides were isolated from the culture of Aspergillus terreus YIM PH30711. Two types of unprecedented skeletons, benzene-cyclopentanone complex and linear polyketide, and an unusual dimer structure were determined by spectral analysis. Compound, 3α-hydroxy-3,5-dihydromonacolin L showed moderate activity against HMG-CoA reductase, with an inhibition ratio of 34% at the concentration of 50 μM, while lovastatin and dihydromonacolin K ethyl ester presented much stronger activity against HMGR with inhibition rates of 85% and 90% at the concentration of 50 μM, respectively...
November 10, 2017: Phytochemistry
https://www.readbyqxmd.com/read/29131001/atorvastatin-calcium-inhibits-pdgf-%C3%AE-%C3%AE-induced-proliferation-and-migration-of-vsmcs-through-the-g0-g1-cell-cycle-arrest-and-suppression-of-activated-pdgfr%C3%AE-pi3k-akt-signaling-cascade
#11
Shuang Chen, Siyuan Dong, Zhao Li, Xiaofan Guo, Naijin Zhang, Bo Yu, Yingxian Sun
BACKGROUND/AIMS: Abnormal proliferation of vascular smooth muscle cells (VSMCs) is a hallmark of vascular lesions, such as atherosclerosis and restenosis. PDGF-ββ, an isoform of PDGF (platelet-derived growth factor), has been demonstrated to induce proliferation and migration of VSMCs. Atorvastatin calcium, a selective inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, has favorable protective effects on VSMCs. This study examined the effects of atorvastatin calcium on the proliferation and migration of PDGF-ββ-treated VSMCs, as well as its underlying mechanisms...
November 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29107682/underlying-mechanisms-for-sterol-induced-ubiquitination-and-er-associated-degradation-of-hmg-coa-reductase
#12
REVIEW
Brittany M Johnson, Russell A DeBose-Boyd
Accelerated ubiquitination and subsequent endoplasmic reticulum (ER)-associated degradation (ERAD) constitute one of several mechanisms for feedback control of HMG CoA reductase, the rate-limiting enzyme in synthesis of cholesterol and nonsterol isoprenoids. This ERAD is initiated by the accumulation of certain sterols in ER membranes, which trigger binding of reductase to ER membrane proteins called Insigs. Insig-associated ubiquitin ligases facilitate ubiquitination of reductase, marking the enzyme for extraction across the ER membrane through a reaction that is augmented by nonsterol isoprenoids...
October 28, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29103328/skin-cancer-associated-with-commonly-prescribed-drugs-tumor-necrosis-factor-alpha-inhibitors-tnf-%C3%AE-is-angiotensin-receptor-blockers-arbs-phosphodiesterase-type-5-inhibitors-pde5is-and-statins-weighing-the-evidence
#13
Beatrice Nardone, Kelsey A Orrell, Paras P Vakharia, Dennis P West
Skin cancers, including both malignant melanoma (MM) and nonmelanoma skin cancer (NMSC), are the most commonly diagnosed cancers in the US. The incidence of both MM and NMSC continues to rise. Areas Covered: Current evidence for an association between four of the most commonly prescribed classes of drugs in the U.S. and risk for MM and NMSC is reported. Medline was searched (January 2000 to May 2017) for each drug in the classes and for "basal cell carcinoma", "squamous cell carcinoma", "non-melanoma skin cancer", "skin cancer" and "melanoma"...
November 6, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/29096742/hmgcr-and-apoe-mutations-may-cause-different-responses-to-lipid-lowering-statin-therapy
#14
D Kirac, E Bayam, M Dagdelen, H Gezmis, S Sarikaya, S Pala, E C Altunok, E Genc
Coronary artery disease (CAD) and its complications are the major causes of death in the world. Although statins have been used to lower lipid levels in CAD patients, this goal can not be attained in 1/3 of the patients. The objective of this study was to investigate whether common variations in HMG-CoA Reductase(HMGCR) and Apolipoprotein E (ApoE) genes involved in lipid and statin metabolism modify the effect of statins on serum lipid and lipoprotein concentrations in CAD patients.A hundred  CAD patients were enrolled into the study...
October 31, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29095667/pcsk9-inhibitors-mechanisms-of-action-metabolic-effects-and-clinical-outcomes
#15
Connie N Hess, Cecilia C Low Wang, William R Hiatt
Atherosclerotic cardiovascular disease (ASCVD) is associated with significant morbidity and mortality worldwide. Increased serum levels of lowdensity lipoprotein cholesterol (LDL-C) are an independent risk factor for ASCVD, and clinical trial data have shown that lowering LDL-C generally reduces cardiovascular risk. Until recently, 3-hydroxy-3-methylglutarylcoenzyme A (HMG-CoA) reductase inhibitors (statins) have been the main therapy for lowering LDL-C. However, some statin-treated patients have persistently elevated residual cardiovascular risk due to inadequate lowering of LDL-C levels or non-LDL-related dyslipidemia...
November 2, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/29090619/tripterygium-regelii-decreases-the-biosynthesis-of-triacylglycerol-and-cholesterol-in-hepg2-cells
#16
Myung-Ji Kang, Eun-Bin Kwon, Heung Joo Yuk, Hyung Won Ryu, Soo-Yeon Kim, Mi-Kyeong Lee, Dong-Oh Moon, Su Ui Lee, Sei-Ryang Oh, Hyun-Sun Lee, Mun-Ock Kim
In the course of screening to find a plant material decreasing the activity of triacylglycerol and cholesterol, we identified Tripterygium regelii (TR). The methanol extract of TR leaves (TR-LM) was shown to reduce the intracellular lipid contents consisting of triacylglycerol (TG) and cholesterol in HepG2 cells. TR-LM also downregulated the mRNA and protein expression of the lipogenic genes such as SREBP-1 and its target enzymes. Consequently, TR-LM reduced the TG biosynthesis in HepG2 cells. In addition, TR-LM decreased SREBP2 and its target enzyme HMG-CoA reductase, which is involved in cholesterol synthesis...
November 1, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29081748/coq10-augments-rosuvastatin-neuroprotective-effect-in-a-model-of-global-ischemia-via-inhibition-of-nf-%C3%AE%C2%BAb-jnk3-bax-and-activation-of-akt-foxo3a-bim-cues
#17
Sarah A Abd El-Aal, Mai A Abd El-Fattah, Hanan S El-Abhar
Statins were reported to lower the Coenzyme Q10 (CoQ10) content upon their inhibition of HMG-CoA reductase enzyme and both are known to possess neuroprotective potentials; therefore, the aim is to assess the possible use of CoQ10 as an adds-on therapy to rosuvastatin to improve its effect using global I/R model. Rats were allocated into sham, I/R, rosuvastatin (10 mg/kg), CoQ10 (10 mg/kg) and their combination. Drugs were administered orally for 7 days before I/R. Pretreatment with rosuvastatin and/or CoQ10 inhibited the hippocampal content of malondialdehyde, nitric oxide, and boosted glutathione and superoxide dismutase...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29077483/risk-of-late-onset-alzheimer-s-disease-by-plasma-cholesterol-rational-in-silico-drug-investigation-of-pyrrole-based-hmg-coa-reductase-inhibitors
#18
Sajad Shahbazi, Jagdeep Kaur, Ananya Kuanar, Dattatreya Kar, Shikha Singh, Ranbir Chander Sobti
Alzheimer's disease (AD), a worldwide renowned progressive neurodegenerative disorder, is the most common cause of dementia. There are several studies on the important role of cholesterol metabolism in AD pathogenesis, which indicated that the high concentrations of serum cholesterol increase the risk of AD. Biosynthesis of the plasma cholesterol and other isoprenoids is catalyzed by 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) through the conversion of HMG-CoA to mevalonic acid in mevalonate pathway. Normally, the high level of plasma cholesterol is downregulated by HGMCR inhibition as the result of degradation of LDL, but in abnormal conditions, for example, high blood glucose, the HMGCR over activated resulting in uncontrolled blood cholesterol...
October 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/29074491/simvastatin-decreases-hyperoxic-oxygen-induced-acute-lung-injury-by-upregulating-enos
#19
Xiao-Chen Bao, An-Rong Mao, Yi-Qun Fang, Yin-Hui Fan, Fang-Fang Wang, Jun Ma, Pu You
Statins, which are 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase competitive inhibitors, not only lower blood cholesterol, but also exert pleiotropic and beneficial effects in various diseases. However, the effects of statins on acute lung injury (ALI) induced by hyperbaric oxygen (HBO) have not been investigated. The present study is the first to investigate the effects of simvastatin in ALI induced by HBO in 8 - 9 week old C57BL/6 mice exposed to 0.23 MPa (= 2.3 atmosphere absolute (ATA)) hyperoxia ( 95% O2) for 6 hrs...
October 26, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29065216/inhibition-of-cholesterol-synthesis-in-hepg2-cells-by-ginst-decreasing-hmg-coa-reductase-expression-via-amp-activated-protein-kinase
#20
Joon-Seung Han, Jong Hwan Sung, Seung Kwon Lee
GINST, a hydrolyzed ginseng extract, has been reported to have antidiabetic effects and to reduce hyperglycemia and hyperlipidemia. Hypercholesterolemia is caused by diet or genetic factors and can lead to atherosclerosis and coronary heart disease. Thus, the purpose of this study is to determine whether GINST and the ginsenoside metabolite, IH-901 (compound K), reduce cholesterol synthesis in HepG2 cells and the signal transduction pathways involved. Concentrations of cholesterol were measured by using an enzymatic method...
October 24, 2017: Journal of Food Science
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