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https://www.readbyqxmd.com/read/28453363/a-polyphenol-based-multicomponent-nutraceutical-in-dysmetabolism-and-oxidative-stress-results-from-a-pilot-study
#1
Roberto Corsi, Giovanni Mosti, Attilio Cavezzi, Simone Ugo Urso, Gayla Dimitrova, Elena Fioroni, Roberto Colucci, Valentina Quinzi
To assess short-term efficacy and safety of a multicomponent nutraceutical (MCN) on dysmetabolism and oxidative stress, a pilot prospective observational study was performed on 21 individuals (12 men and 9 women) who took, for 60 days, 2 tablets per day of an MCN based on antioxidants and metabolism regulators: hydroxytyrosol (15 mg), maqui (300 mg), amla (200 mg), monacolin K (10 mg), berberine (245 mg), astaxanthin (0.5 mg), coenzyme Q10 (100 mg), and folic acid (200 mcg). On day 0 (T0) and day 60 (T60), all participants underwent laboratory tests related to lipid profile, carbohydrate metabolism, oxidative stress, and cellular inflammation...
April 28, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28441650/microrna-1185-induces-endothelial-cell-apoptosis-by-targeting-uvrag-and-krit1
#2
Haoyuan Deng, Xia Chu, Zhenfeng Song, Xinrui Deng, Huan Xu, Yaxin Ye, Songtao Li, Qiao Zhang, Changhao Sun, Ying Li
BACKGROUND/AIMS: Atherosclerosis is a multifactorial chronic disease and is the main cause of death and impairment in the world. Endothelial injury and apoptosis play a crucial role in the onset and development of atherosclerosis. MicroRNAs (miRNAs) have been proven to be involved in the pathogenesis of atherosclerosis. However, studies of the functional role of apoptosis-related miRNAs in the endothelium during atherogenesis are limited. METHODS: Cell injury and apoptosis were measured in five types of cells transfected with miR-1185 or co-transfected with miR-1185 and its inhibitor...
April 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28438163/enhanced-status-of-inflammation-and-endothelial-activation-in-subjects-with-familial-hypercholesterolaemia-and-their-related-unaffected-family-members-a-case-control-study
#3
Thuhairah Rahman, Nur Suhana Hamzan, Atiqah Mokhsin, Radzi Rahmat, Zubin Othman Ibrahim, Rafezah Razali, Malathi Thevarajah, Hapizah Nawawi
BACKGROUND: Familial hypercholesterolaemia (FH) leads to premature coronary artery diseases (CAD) which pathophysiologically can be measured by inflammation, endothelial activation and oxidative stress status. However, the status of these biomarkers among related unaffected relatives of FH cases and whether FH is an independent predictor of these biomarkers have not been well established. Thus, this study aims to (1) compare the biomarkers of inflammation, endothelial activation and oxidative stress between patients with FH, their related unaffected relatives (RUC) and normolipaemic subjects (NC) (2)determine whether FH is an independent predictor of these biomarkers...
April 24, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28434137/cholesterol-hydroperoxide-generation-translocation-and-reductive-turnover-in-biological-systems
#4
Albert W Girotti, Witold Korytowski
Cholesterol is like other unsaturated lipids in being susceptible to peroxidative degradation upon exposure to strong oxidants like hydroxyl radical or peroxynitrite generated under conditions of oxidative stress. In the eukaryotic cell plasma membrane, where most of the cellular cholesterol resides, peroxidation leads to membrane structural and functional damage from which pathological states may arise. In low density lipoprotein, cholesterol and phospholipid peroxidation have long been associated with atherogenesis...
April 22, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28432377/emerging-roles-of-calpain-proteolytic-systems-in-macrophage-cholesterol-handling
#5
REVIEW
Takuro Miyazaki, Akira Miyazaki
Calpains are Ca(2+)-dependent intracellular proteases that play central roles in the post-translational processing of functional proteins. In mammals, calpain proteolytic systems comprise the endogenous inhibitor calpastatin as well as 15 homologues of the catalytic subunits and two homologues of the regulatory subunits. Recent pharmacological and gene targeting studies in experimental animal models have revealed the contribution of conventional calpains, which consist of the calpain-1 and -2 isozymes, to atherosclerotic diseases...
April 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28431321/atherogenicity-of-amino-acids-in-the-lipid-laden-macrophage-model-system-in-vitro-and-in-atherosclerotic-mice-a-key-role-for-triglyceride-metabolism
#6
Oren Rom, Claudia Grajeda-Iglesias, Mahmoud Najjar, Niroz Abu-Saleh, Nina Volkova, Dalit Esther Dar, Tony Hayek, Michael Aviram
Atherosclerosis-related research has focused mainly on the effects of lipids on macrophage foam cell formation and atherogenesis, whereas the role of amino acids (AAs) was understudied. The current study aimed to identify anti- or pro-atherogenic AA in the macrophage model system and to elucidate the underlying metabolic and molecular mechanisms. J774A.1 cultured macrophages were treated with increasing concentrations of each 1 of the 20 AAs. Macrophage atherogenicity was assessed in terms of cellular toxicity, generation of reactive oxygen species (ROS) and cellular cholesterol or triglyceride content...
April 6, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28429960/extracellular-matrix-markers-and-risk-of-myocardial-infarction-the-hunt-study-in-norway
#7
Thor Ueland, Lars E Laugsand, Lars J Vatten, Imre Janszky, Carl Platou, Annika E Michelsen, Jan K Damås, Pål Aukrust, Bjørn O Åsvold
Aims Extracellular matrix remodelling may influence atherosclerotic progression and plaque stability. We hypothesized that evaluation of extracellular matrix markers, with potentially different roles during atherogenesis, could provide information on underlying mechanisms and risk of myocardial infarction (MI) in apparently healthy individuals. Methods We conducted a case-control study nested within the population-based HUNT2 cohort in Norway. A total of 58,761 men and women, free of known cardiovascular disease, were followed for a first MI...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28429955/matrix-metalloproteinase-8-and-tissue-inhibitor-of-matrix-metalloproteinase-1-predict-incident-cardiovascular-disease-events-and-all-cause-mortality-in-a-population-based-cohort
#8
Immi Kormi, Mikko T Nieminen, Aki S Havulinna, Tanja Zeller, Stefan Blankenberg, Taina Tervahartiala, Timo Sorsa, Veikko Salomaa, Pirkko J Pussinen
Background Extracellular matrix degrading proteases and their regulators play an important role in atherogenesis and subsequent plaque rupture leading to acute cardiovascular manifestations. Design and methods In this prospective cohort study, we investigated the prognostic value of circulating matrix metalloproteinase-8, tissue inhibitor of matrix metalloproteinase-1 concentrations, the ratio of matrix metalloproteinase-8/ tissue inhibitor of matrix metalloproteinase-1 and, for comparison, myeloperoxidase and C-reactive protein concentrations for incident cardiovascular disease endpoints...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28428217/microrna-33-regulates-macrophage-autophagy-in-atherosclerosis
#9
Mireille Ouimet, Hasini Ediriweera, Milessa Silva Afonso, Bhama Ramkhelawon, Ragunath Singaravelu, Xianghai Liao, Rachel C Bandler, Karishma Rahman, Edward A Fisher, Katey J Rayner, John P Pezacki, Ira Tabas, Kathryn J Moore
OBJECTIVE: Defective autophagy in macrophages leads to pathological processes that contribute to atherosclerosis, including impaired cholesterol metabolism and defective efferocytosis. Autophagy promotes the degradation of cytoplasmic components in lysosomes and plays a key role in the catabolism of stored lipids to maintain cellular homeostasis. microRNA-33 (miR-33) is a post-transcriptional regulator of genes involved in cholesterol homeostasis, yet the complete mechanisms by which miR-33 controls lipid metabolism are unknown...
April 20, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28427316/a-multiscale-modelling-approach-to-understand-atherosclerosis-formation-a-patient-specific-case-study-in-the-aortic-bifurcation
#10
Mona Alimohammadi, Cesar Pichardo-Almarza, Obiekezie Agu, Vanessa Díaz-Zuccarini
Atherogenesis, the formation of plaques in the wall of blood vessels, starts as a result of lipid accumulation (low-density lipoprotein cholesterol) in the vessel wall. Such accumulation is related to the site of endothelial mechanotransduction, the endothelial response to mechanical stimuli and haemodynamics, which determines biochemical processes regulating the vessel wall permeability. This interaction between biomechanical and biochemical phenomena is complex, spanning different biological scales and is patient-specific, requiring tools able to capture such mathematical and biological complexity in a unified framework...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28425867/chemokines-and-relevant-micrornas-in-the-atherogenic-process
#11
Dimitry A Chistiakov, Alexander N Orekhov, Yuri V Bobryshev
Chemokines play a significant role in initial and advanced steps of atherogenesis. In early steps, chemokines control the adhesion of leukocytes to endothelial cells (ECs) followed by transmigration of monocytes and their deposition in the intima where they differentiate to proinflammatory macrophages. Except proinflammatory activity, chemokines are responsible for homeostasis and homing of progenitor cells. Recently, microRNAs (miRs) were found to control expression and activity of chemokines in ECs, vascular smooth muscle cells (VSMCs), and macrophages at different steps of atherogenesis...
April 19, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28425862/the-impact-of-il-17-in-atherosclerosis
#12
Xinjie Lu
Atherosclerosis is a chronic vascular disease in which atherosclerotic plaques develop in the arterial wall. It is believed that inflammation plays a major role in atherosclerotic formation and progression. Thus, atherosclerosis can be considered as an inflammatory disease of the arterial vessel. Mouse model demonstrated that T and B cell deficiency reduces the atherosclerotic burden in the formation of an atherosclerotic lesion. CD4+ T helper cells (Th), such as Th1 cells known being the major CD4+ T cell subtype found in mouse models of atherogenesis, increase plaque formation caused by oxLDL...
April 19, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28424305/numerical-simulation-of-haemodynamics-and-low-density-lipoprotein-transport-in-the-rabbit-aorta-and-their-correlation-with-atherosclerotic-plaque-thickness
#13
Xiaoyin Li, Xiao Liu, Peng Zhang, Chenglong Feng, Anqiang Sun, Hongyan Kang, Xiaoyan Deng, Yubo Fan
Two mechanisms of shear stress and mass transport have been recognized to play an important role in the development of localized atherosclerosis. However, their relationship and roles in atherogenesis are still obscure. It is necessary to investigate quantitatively the correlation among low-density lipoproteins (LDL) transport, haemodynamic parameters and plaque thickness. We simulated blood flow and LDL transport in rabbit aorta using computational fluid dynamics and evaluated plaque thickness in the aorta of a high-fat-diet rabbit...
April 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28421995/endothelial-dysfunction-is-independent-of-inflammation-and-altered-ccr7-t-cell-expression-in-patients-with-ankylosing-spondylitis
#14
Joanna Sulicka, Andrzej Surdacki, Mariusz Korkosz, Tomasz Mikołajczyk, Magdalena Strach, Ewa Klimek, Tomasz Guzik, Tomasz Grodzicki
OBJECTIVES: The accumulation of CCR7 (chemokine receptor 7) positive cells in the vessel wall may be involved in endothelial dysfunction and subsequent accelerated atherogenesis. CCR7 plays a crucial role in T cell and monocyte migration/homing and in priming of naive T lymphocytes in non-lymphoid tissues in chronic inflammatory diseases. Our objective was to investigate the endothelial function and inflammation-driven expression of CCR7 on T lymphocytes in patients with ankylosing spondylitis (AS)...
April 18, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28415614/connexin40-controls-endothelial-activation-by-dampening-nfkb-activation
#15
Jean-Francois Denis, Ke Ludwig Scheckenbach, Anna Pfenniger, Merlijn J Meens, Rob Krams, Lucile Miquerol, Steven Taffet, Marc Chanson, Mario Delmar, Brenda R Kwak
Connexins are proteins forming gap junction channels for intercellular communication. Connexin40 (Cx40) is highly expressed by endothelial cells (ECs) of healthy arteries but this expression is lost in ECs overlying atherosclerotic plaques. Low/oscillatory shear stress observed in bends and bifurcations of arteries is atherogenic partly through activation of the pro-inflammatory NFκB pathway in ECs. In this study, we investigated the relation between shear stress, Cx40 and NFκB. Shear stress-modifying casts were placed around carotid arteries of mice expressing eGFP under the Cx40 promoter (Cx40+/eGFP)...
March 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28411243/potent-vasoconstrictor-kisspeptin-10-induces-atherosclerotic-plaque-progression-and-instability-reversal-by-its-receptor-gpr54-antagonist
#16
Kengo Sato, Remina Shirai, Mina Hontani, Rina Shinooka, Akinori Hasegawa, Tomoki Kichise, Tomoyuki Yamashita, Hayami Yoshizawa, Rena Watanabe, Taka-Aki Matsuyama, Hatsue Ishibashi-Ueda, Shinji Koba, Youichi Kobayashi, Tsutomu Hirano, Takuya Watanabe
BACKGROUND: Kisspeptin-10 (KP-10), a potent vasoconstrictor and inhibitor of angiogenesis, and its receptor, GPR54, have currently received much attention in relation to pre-eclampsia. However, it still remains unknown whether KP-10 could affect atherogenesis. METHODS AND RESULTS: We evaluated the effects of KP-10 on human umbilical vein endothelial cells, human monocyte-derived macrophages, human aortic smooth muscle cells in vitro, and atherosclerotic lesions in apolipoprotein E-deficient (ApoE(-/-)) mice in vivo...
April 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28411140/batf3-dependent-cd8%C3%AE-dendritic-cells-aggravates-atherosclerosis-via-th1-cell-induction-and-enhanced-ccl5-expression-in-plaque-macrophages
#17
Yalin Li, Xueyan Liu, Wei Duan, Hua Tian, Guangming Zhu, Hao He, Shutong Yao, Shuying Yi, Wengang Song, Hua Tang
Dendritic cells (DCs) play an important role in controlling T cell-mediated adaptive immunity in atherogenesis. However, the role of the basic leucine zipper transcription factor, ATF-like 3 (Batf3)-dependent CD8α(+) DC subset in atherogenesis remains unclear. Here we show that Batf3(-/-)Apoe(-/-) mice, lacking CD8α(+) DCs, exhibited a significant reduction in atherogenesis and T help 1 (Th1) cells compared with Apoe(-/-) controls. Then, we found that CD8α(+) DCs preferentially induce Th1 cells via secreting interleukin-12 (IL-12), and that the expression of interferon-gamma (IFN-γ)or chemokine (C-C motif) ligand 5 (CCL5) in aorta were significantly decreased in Batf3(-/-)Apoe(-/-) mice...
April 6, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28408371/leukocyte-overexpression-of-intracellular-nampt-attenuates-atherosclerosis-by-regulating-ppar%C3%AE-dependent-monocyte-differentiation-and-function
#18
Beatriz Bermudez, Tuva B Dahl, Indira Medina, Mathijs Groeneweg, Sverre Holm, Sergio Montserrat-de la Paz, Mat Rousch, Jeroen J T Otten, Veronica Herias, Lourdes M Varela, Trine Ranheim, Arne Yndestad, Almudena Ortega-Gomez, Rocio Abia, Laszlo Nagy, Pal Aukrust, Francisco J G Muriana, Bente Halvorsen, Erik A L Biessen
OBJECTIVE: Extracellular nicotinamide phosphoribosyltransferase (eNAMPT) mediates inflammatory and potentially proatherogenic effects, whereas the role of intracellular NAMPT (iNAMPT), the rate limiting enzyme in the salvage pathway of nicotinamide adenine dinucleotide (NAD)(+) generation, in atherogenesis is largely unknown. Here we investigated the effects of iNAMPT overexpression in leukocytes on inflammation and atherosclerosis. APPROACH AND RESULTS: Low-density lipoprotein receptor-deficient mice with hematopoietic overexpression of human iNAMPT (iNAMPT(hi)), on a western type diet, showed attenuated plaque burden with features of lesion stabilization...
April 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28407763/klotho-ameliorates-oxidized-low-density-lipoprotein-ox-ldl-induced-oxidative-stress-via-regulating-lox-1-and-pi3k-akt-enos-pathways
#19
Yansheng Yao, Yanbing Wang, Yibo Zhang, Chang Liu
BACKGROUND: Atherosclerosis is a common cardiovascular disease that causes myocardial infarction, heart failure, and stroke. Increased oxidized low density lipoprotein (ox-LDL) in the sub-endothelium is the characteristic origin of atherogenesis. Klotho, an anti-aging protein, has been reported to protect against atherosclerosis and ameliorate endothelial dysfunction in vivo. The aim of this study is to investigatethe anti-oxidative activity of Klothoin ox-LDL-treated human umbilical vein endothelial cells (HUVECs)...
April 13, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28407121/urea-and-chronic-kidney-disease-the-comeback-of-the-century-in-uraemia-research
#20
Raymond Vanholder, Tessa Gryp, Griet Glorieux
Urea, a marker of uraemic retention in chronic kidney disease (CKD) and of adequacy of intradialytic solute removal, has traditionally been considered to be biologically inert. However, a number of recent experimental data suggest that urea is toxic at concentrations representative for CKD. First of all, at least five studies indicate that urea itself induces molecular changes related to insulin resistance, free radical production, apoptosis and disruption of the protective intestinal barrier. Second, urea is at the origin of the generation of cyanate, ammonia and carbamylated compounds, which as such all have been linked to biological changes...
April 12, 2017: Nephrology, Dialysis, Transplantation
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