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Oxidative stress, atherosclerosis,inflammation

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https://www.readbyqxmd.com/read/28075404/advanced-oxidation-protein-products-modified-albumin-induces-differentiation-of-raw264-7-macrophages-into-dendritic-like-cells-which-is-modulated-by-cell-surface-thiols
#1
Silvano Garibaldi, Chiara Barisione, Barbara Marengo, Pietro Ameri, Claudio Brunelli, Manrico Balbi, Giorgio Ghigliotti
Local accumulation of Advanced Oxidation Protein Products (AOPP) induces pro-inflammatory and pro-fibrotic processes in kidneys and is an independent predictor of renal fibrosis and of rapid decline of eGFR in patients with chronic kidney disease (CKD). In addition to kidney damage, circulating AOPP may be regarded as mediators of systemic oxidative stress and, in this capacity, they might play a role in the progression of atherosclerotic damage of arterial walls. Atherosclerosis is a chronic inflammatory disease that involves activation of innate and adaptive immunity...
January 10, 2017: Toxins
https://www.readbyqxmd.com/read/28063251/perivascular-adipose-tissue-inflammation-in-vascular-disease
#2
REVIEW
Ryszard Nosalski, Tomasz J Guzik
Perivascular adipose tissue (PVAT) plays a critical role in the pathogenesis of cardiovascular disease. In vascular pathologies perivascular adipose tissue increases in volume and becomes dysfunctional, with altered cellular composition and molecular characteristics. PVAT dysfunction is characterized by its inflammatory character, oxidative stress, diminished production of vaso-protective adipocyte derived relaxing factors (ADRFs) and increased production of paracrine factors such as resistin, leptin, cytokines (IL-6, TNF-α) and chemokines (RANTES, MCP-1)...
January 7, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28060997/effect-of-hypercholesterolemia-on-myocardial-function-ischemia-reperfusion-injury-and-cardioprotection-by-preconditioning-postconditioning-and-remote-conditioning
#3
REVIEW
Ioanna Andreadou, Efstathios K Iliodromitis, Antigone Lazou, Anikó Görbe, Zoltán Giricz, Rainer Schulz, Péter Ferdinandy
Hypercholesterolemia is considered to be a principle risk factor for cardiovascular disease, having direct negative effects on the myocardium itself, in addition to the development of atherosclerosis. Since hypercholesterolemia affects global cardiac gene expression profile, among many other factors, increased myocardial oxidative stress, mitochondrial dysfunction and inflammation trigger apoptosis and this may account for myocardial dysfunction and increased susceptibility of the myocardium to infarction. In addition, numerous experimental and clinical studies revealed that hyperlcholesterolemia may interfere with the cardioprotective potential of conditioning mechanisms...
January 6, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28059114/cigarette-smoke-extract-profoundly-suppresses-tnf%C3%AE-mediated-proinflammatory-gene-expression-through-upregulation-of-atf3-in-human-coronary-artery-endothelial-cells
#4
Jack E Teasdale, Georgina G J Hazell, Alasdair M G Peachey, Graciela B Sala-Newby, Charles C T Hindmarch, Tristan R McKay, Mark Bond, Andrew C Newby, Stephen J White
Endothelial dysfunction caused by the combined action of disturbed flow, inflammatory mediators and oxidants derived from cigarette smoke is known to promote coronary atherosclerosis and increase the likelihood of myocardial infarctions and strokes. Conversely, laminar flow protects against endothelial dysfunction, at least in the initial phases of atherogenesis. We studied the effects of TNFα and cigarette smoke extract on human coronary artery endothelial cells under oscillatory, normal laminar and elevated laminar shear stress for a period of 72 hours...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28045034/premature-senescence-of-endothelial-cells-upon-chronic-exposure-to-tnf%C3%AE-can-be-prevented-by-n-acetyl-cysteine-and-plumericin
#5
Shafaat Y Khan, Ezzat M Awad, Andre Oszwald, Manuel Mayr, Xiaoke Yin, Birgit Waltenberger, Hermann Stuppner, Markus Lipovac, Pavel Uhrin, Johannes M Breuss
Cellular senescence is characterized by a permanent cell-cycle arrest and a pro-inflammatory secretory phenotype, and can be induced by a variety of stimuli, including ionizing radiation, oxidative stress, and inflammation. In endothelial cells, this phenomenon might contribute to vascular disease. Plasma levels of the inflammatory cytokine tumor necrosis factor alpha (TNFα) are increased in age-related and chronic conditions such as atherosclerosis, rheumatoid arthritis, psoriasis, and Crohn's disease. Although TNFα is a known activator of the central inflammatory mediator NF-κB, and can induce the intracellular generation of reactive oxygen species (ROS), the question whether TNFα can induce senescence has not been answered conclusively...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28027930/tocilizumab-improves-the-proatherothrombotic-profile-of-rheumatoid-arthritis-patients-modulating-endothelial-dysfunction-netosis-and-inflammation
#6
P Ruiz-Limón, R Ortega, I Arias de la Rosa, M C Abalos-Aguilera, C Perez Sanchez, Y Jimenez Gomez, E Peralbo-Santaella, P Font, D Ruiz-Vilches, G Ferrin, E Collantes-Estevez, A Escudero, C H López Pedrera, N Barbarroja
Tocilizumab (TCZ) is an effective treatment for rheumatoid arthritis (RA). However, the changes that occurred after TCZ therapy on endothelial dysfunction, monocyte activity, NETosis, and oxidative stress, the principal effectors of atherosclerosis and cardiovascular disease, have not been analyzed yet. A total of 20 RA patients received 162 mg per week subcutaneous TCZ for 6 months. Endothelial function was measured through postocclusive hyperemia using Laser Doppler. Oxidative stress markers in monocytes and neutrophils were analyzed by flow cytometry...
December 9, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28017665/advanced-atherosclerosis-is-associated-with-inflammation-vascular-dysfunction-and-oxidative-stress-but-not-hypertension
#7
Quynh N Dinh, Sophocles Chrissobolis, Henry Diep, Christopher T Chan, Dorota Ferens, Grant R Drummond, Christopher G Sobey
Although hypertension may involve underlying inflammation, it is unknown whether advanced atherosclerosis - a chronic inflammatory condition - can by itself promote hypertension. We thus tested if advanced atherosclerosis in chronically hypercholesterolemic mice is associated with systemic and end-organ inflammation, vascular dysfunction and oxidative stress, and whether blood pressure is higher than in control mice. Male ApoE(-/-) and wild-type (C57Bl6J) mice were placed on a high fat or chow diet, respectively, from 5 to 61 weeks of age...
December 23, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28013216/diesel-exhaust-particles-contribute-to-endothelia-apoptosis-via-autophagy-pathway
#8
Jhih-Syuan Wang, Chia-Yi Tseng, Ming-Wei Chao
Epidemiological studies suggest that an increase of PM2.5 diesel exhaust particles (DEP) in ambient air corresponds to increased myocardial infarctions and atherosclerosis. When exposed to DEP, endothelial cells exhibit increases in oxidative stress and apoptosis, but the role of autophagy in this DEP-induced cell death remains unclear. Here, we suggest that acute DEP exposure produces intracellular ROS leading to induction of DEP internalization, endothelial dysfunction, and pro-inflammation in an in vitro HUVEC model...
December 24, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28009916/selenium-in-the-prevention-of-atherosclerosis-and-its-underlying-mechanisms
#9
REVIEW
Hongmei Liu, Huibi Xu, Kaixun Huang
Atherosclerosis and related cardiovascular diseases (CVDs) represent the greatest threats to human health worldwide. Selenium, an essential trace element, is incorporated into selenoproteins that play a crucial role in human health and disease. Although findings from a limited number of randomized trials have been inconsistent and cannot support a protective role of Se supplementation in CVDs, prospective observational studies have generally shown a significant inverse association between selenium or selenoprotein status and CVD risk...
December 23, 2016: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/27986445/nadph-oxidase-4-regulates-vascular-inflammation-in-aging-and-atherosclerosis
#10
Andrey Lozhkin, Aleksandr E Vendrov, Hua Pan, Samuel A Wickline, Nageswara R Madamanchi, Marschall S Runge
We recently reported that increased NADPH oxidase 4 (NOX4) expression and activity during aging results in enhanced cellular and mitochondrial oxidative stress, vascular inflammation, dysfunction, and atherosclerosis. The goal of the present study was to elucidate the molecular mechanism(s) for these effects and determine the importance of NOX4 modulation of proinflammatory gene expression in mouse vascular smooth muscle cells (VSMCs). A novel peptide-mediated siRNA transfection approach was used to inhibit Nox4 expression with minimal cellular toxicity...
December 14, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27983965/cyanidin-3-glucoside-attenuates-angiotensin-ii-induced-oxidative-stress-and-inflammation-in-vascular-endothelial-cells
#11
Sivanan Sivasinprasasn, Rungusa Pantan, Sarinthorn Thummayot, Jiraporn Tocharus, Apichart Suksamrarn, Chainarong Tocharus
Angiotensin II (Ang II) causes oxidative stress and vascular inflammation, leading to vascular endothelial cell dysfunction, and is associated with the development of inflammatory cardiovascular diseases such as atherosclerosis. Therefore, interventions of oxidative stress and inflammation may contribute to the reduction of cardiovascular diseases. Cyanidin-3-glucoside (C3G) plays a role in the prevention of oxidative damage in several diseases. Here, we investigated the effect of C3G on Ang II-induced oxidative stress and vascular inflammation in human endothelial cells (EA...
October 28, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27932239/the-therapeutic-effect-of-rosuvastatin-and-propylthiouracil-on-ameliorating-high-cholesterol-diet-induced-rabbit-aortic-atherosclerosis-and-stiffness
#12
Pao-Yuan Lin, Fan-Yen Lee, Christopher Glenn Wallace, Kuan-Hung Chen, Gour-Shenq Kao, Pei-Hsun Sung, Sarah Chua, Sheung-Fat Ko, Yung-Lung Chen, Shun-Cheng Wu, Hsueh-Wen Chang, Hon-Kan Yip, Pei-Lin Shao
BACKGROUND: We tested the hypothesis that arteriosclerosis-augmented aortic pulse wave velocity (PWV) and -impaired vasorelaxation were attenuated by rosuvastatin (Rosu) and propylthiouracil (PTU) therapy. METHODS AND RESULTS: Thirty-two New Zealand rabbits were equally divided into group 1 (sham-control), group 2 [high-cholesterol-diet (HCD) for 8weeks], group 3 [HCD-Rosu (20mg/kg/day administration after 4-week HFD for 4weeks)], and group 4 [HCD-PTU (0.1% PTU in drinking water), the treatment course as group 3]...
January 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27921425/-oxldl-%C3%AE-2-glycoprotein-i-complex-as-a-pro-atherogenic-autoantigen-is-atherosclerosis-an-autoimmune-disease
#13
Pavel Kraml
Oxidation of atherogenic low-density lipoproteins (LDL) plays a key role in the pathogenesis of atherosclerosis. Oxidation stress and inflammation are closely interrelated and they can potentiate one another. In the subendothelial space of the arterial intima, monocytes/macrophages become activated and phagocyte oxidized LDL (oxLDL) via scavenger receptors. It has been demonstrated that oxLDL forms complex with plasma β2-glycoprotein I (β2GPI) and becomes autoantigenic triggering synthesis of specific antiphosholipid antibodies...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27919735/quercetin-attenuates-high-fructose-feeding-induced-atherosclerosis-by-suppressing-inflammation-and-apoptosis-via-ros-regulated-pi3k-akt-signaling-pathway
#14
Xue-Li Lu, Cui-Hua Zhao, Xin-Liang Yao, Han Zhang
Quercetin is a dietary flavonoid compound extracted from various plants, such as apple and onions. Previous studies have revealed its anti-inflammatory, anti-cancer, antioxidant and anti-apoptotic activities. This study investigated the ability of quercetin to inhibit high fructose feeding- or LPS-induced atherosclerosis through regulating oxidative stress, apoptosis and inflammation response in vivo and in vitro experiments. 50 and 100mg/kg quercetin were used in our study, showing significant inhibitory role in high fructose-induced atherosclerosis via reducing reactive oxygen species (ROS) levels, Caspase-3 activation, inflammatory cytokines releasing, the number of terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL)-positive cells and collagen contents as well as modulating apoptosis- and inflammation-related proteins expression...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27908891/the-paraoxonase-gene-cluster-protects-against-abdominal-aortic-aneurysm-formation
#15
Yun-Fei Yan, Jian-Fei Pei, Ran Zhang, Fang Wang, Peng Gao, Zhu-Qin Zhang, Ting-Ting Wang, Yang Zhang, Zhi-Gang She, Hou-Zao Chen, De-Pei Liu
OBJECTIVE: Abdominal aortic aneurysm (AAA) is a life-threatening vascular pathology, the pathogenesis of which is closely related to oxidative stress. However, an effective pharmaceutical treatment is lacking because the exact cause of AAA remains unknown. Here, we aimed at delineating the role of the paraoxonases (PONs) gene cluster (PC), which prevents atherosclerosis through the detoxification of oxidized substrates, in AAA formation. APPROACH AND RESULTS: PC transgenic (Tg) mice were crossed to an Apoe(-/-) background, and an angiotensin II-induced AAA mouse model was used to analyze the effect of the PC on AAA formation...
December 1, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27908890/pathology-of-human-coronary-and-carotid-artery-atherosclerosis-and-vascular-calcification-in-diabetes-mellitus
#16
Kazuyuki Yahagi, Frank D Kolodgie, Christoph Lutter, Hiroyoshi Mori, Maria E Romero, Aloke V Finn, Renu Virmani
The continuing increase in the prevalence of diabetes mellitus in the general population is predicted to result in a higher incidence of cardiovascular disease. Although the mechanisms of diabetes mellitus-associated progression of atherosclerosis are not fully understood, at clinical and pathological levels, there is an appreciation of increased disease burden and higher levels of arterial calcification in these subjects. Plaques within the coronary arteries of patients with diabetes mellitus generally exhibit larger necrotic cores and significantly greater inflammation consisting mainly of macrophages and T lymphocytes relative to patients without diabetes mellitus...
December 1, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27881962/cigarette-smoking-induced-cardiac-hypertrophy-vascular-inflammation-and-injury-are-attenuated-by-antioxidant-supplementation-in-an-animal-model
#17
Moustafa Al Hariri, Kazem Zibara, Wissam Farhat, Yasmine Hashem, Nadia Soudani, Farah Al Ibrahim, Eva Hamade, Asad Zeidan, Ahmad Husari, Firas Kobeissy
Background: Cardiovascular diseases are the leading causes of morbidity and mortality worldwide. Cigarette smoking remains a global health epidemic with associated detrimental effects on the cardiovascular system. In this work, we investigated the effects of cigarette smoke exposure on cardiovascular system in an animal model. The study then evaluated the effects of antioxidants (AO), represented by pomegranate juice, on cigarette smoke induced cardiovascular injury. This study aims at evaluating the effect of pomegranate juice supplementation on the cardiovascular system of an experimental rat model of smoke exposure...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27872279/role-of-the-receptor-mas-in-macrophage-mediated-inflammation-in-vivo
#18
Anna Hammer, Guang Yang, Juliane Friedrich, Agnes Kovacs, De-Hyung Lee, Katharina Grave, Stefanie Jörg, Natalia Alenina, Janina Grosch, Jürgen Winkler, Ralf Gold, Michael Bader, Arndt Manzel, Lars C Rump, Dominik N Müller, Ralf A Linker, Johannes Stegbauer
Recently, an alternative renin-angiotensin system pathway has been described, which involves binding of angiotensin-(1-7) to its receptor Mas. The Mas axis may counterbalance angiotensin-II-mediated proinflammatory effects, likely by affecting macrophage function. Here we investigate the role of Mas in murine models of autoimmune neuroinflammation and atherosclerosis, which both involve macrophage-driven pathomechanisms. Mas signaling affected macrophage polarization, migration, and macrophage-mediated T-cell activation...
December 6, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27872172/urea-a-true-uremic-toxin-the-empire-strikes-back
#19
REVIEW
Wei Ling Lau, Nosratola D Vaziri
Blood levels of urea rise with progressive decline in kidney function. Older studies examining acute urea infusion suggested that urea was well-tolerated at levels 8-10× above normal values. More recent in vitro and in vivo work argue the opposite and demonstrate both direct and indirect toxicities of urea, which probably promote the premature aging phenotype that is pervasive in chronic kidney disease (CKD). Elevated urea at concentrations typically encountered in uremic patients induces disintegration of the gut epithelial barrier, leading to translocation of bacterial toxins into the bloodstream and systemic inflammation...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27861612/clic1-inhibition-attenuates-vascular-inflammation-oxidative-stress-and-endothelial-injury
#20
Yingling Xu, Ji Zhu, Xiao Hu, Cui Wang, Dezhao Lu, Chenxue Gong, Jinhuan Yang, Lei Zong
Endothelial dysfunction, which includes endothelial oxidative damage and vascular inflammation, is a key initiating step in the pathogenesis of atherosclerosis (AS) and an independent risk factor for this disorder. Intracellular chloride channel 1 (CLIC1), a novel metamorphic protein, acts as a sensor of cell oxidation and is involved in inflammation. In this study, we hypothesize that CLIC1 plays an important role in AS. Apolipoprotein E-deficient mice were supplied with a normal diet or a high-fat and high-cholesterol diet for 8 weeks...
2016: PloS One
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