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atherogenesis

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https://www.readbyqxmd.com/read/28807411/timp3-is-regulated-by-pericytes-upon-shear-stress-detection-leading-to-a-modified-endothelial-cell-response
#1
C Schrimpf, T Koppen, J S Duffield, U Böer, S David, W Ziegler, A Haverich, O E Teebken, M Wilhelmi
OBJECTIVES: Atherosclerosis is a hallmark of cardiovascular disease. Shear stress on endothelial cells has been linked to atherogenesis and to fibrous cap thinning and rupture. Pericytes reside in the sub-endothelial space of vessels and have vasoprotective effects. They are subjected to shear stress when endothelial cell integrity is disrupted. The aim was to investigate the susceptibility and response of pericytes to shear stress. METHODS: Endothelial cells and pericytes were seeded in two dimensional monocultures and co-cultures, and in a novel three dimensional co-culture system and were subjected to no, low and high shear stress (0, 10, 30 dyne/cm(2)) for 48 h...
August 11, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28805560/glycation-of-matrix-proteins-in-the-artery-inhibits-migration-of-smooth-muscle-cells-from-the-media-to-the-intima
#2
A Kuzan, O Michel, A Gamian
Formation and growth of atherosclerotic plaques have serious clinical consequences. One mechanism that occurs during atherogenesis is migration of smooth muscle cells from the middle layer of the artery to the intima, where they proliferate and are transformed into foam cells. This degenerative process is accompanied by glycation, by which proteins are modified and change the biomechanical and biochemical properties. The aim of the study was to determine whether glycation of collagen and elastin building the walls of blood vessels alters the adhesion and rate of myocyte migration...
2017: Folia Biologica (Praha)
https://www.readbyqxmd.com/read/28804718/cd36-gene-polymorphisms-are-associated-with-intracerebral-hemorrhage-susceptibility-in-a-han-chinese-population
#3
Qiu-Wen Gong, Mao-Fan Liao, Liang Liu, Xiao-Yi Xiong, Qin Zhang, Qi Zhong, Kai Zhou, Yuan-Rui Yang, Zhao-You Meng, Chang-Xiong Gong, Rui Xu, Qing-Wu Yang
The CD36 gene encodes a membrane glycoprotein (type B scavenger receptor, SR-B2) that plays a crucial role in lipid sensing, innate immunity, atherogenesis, and glycolipid metabolism. In this study, we aimed to investigate the association between CD36 gene polymorphisms and intracerebral hemorrhage (ICH) in a Han Chinese population. We performed genotype and allele analyses for eleven single nucleotide polymorphisms (SNPs) of CD36 in a case-controlled study involving 292 ICH patients and 298 control participants...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28797175/role-of-lipids-and-intraplaque-hypoxia-in-the-formation-of-neovascularization-in-atherosclerosis
#4
Dimitry A Chistiakov, Alexandra A Melnichenko, Veronika A Myasoedova, Andrey V Grechko, Alexander N Orekhov
According to the current paradigm, chronic vascular inflammation plays a central role in the pathogenesis of atherosclerosis. The plaque progression is typically completed with rupture and subsequent acute cardiovascular complications. Previously, the role of adventitial vasa vasorum in atherogenesis was underestimated. However, investigators then revealed that vasa vasorum neovascularization can be observed when no clinical manifestation of atherosclerosis is present. Vasa vasorum is involved in various proatherogenic processes such as intimal accumulation of inflammatory leukocytes, intimal thickening, necrotic core formation, intraplaque hemorrhage, lesion repture, and atherothrombosis...
August 11, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28781261/-combined-markers-of-initial-stages-of-coronary-atherosclerosis
#5
N G Gumanova, M V Klimushina, N E Gavrilova, V A Metelskaya
Abnormalities in energy metabolism and endothelial dysfunction contribute to signaling processes associated with atherogenesis. The goal of our study was to develop diagnostic tests based on endothelial functional markers and adiponectin to differentiate early stages of coronary lesions during atherogenesis. The cohort included male and female patients from 25 to 86 years of age. All subjects underwent coronary angiography and severity of coronary lesions was quantified by the Gensini score that assigns points depending on location and extent of the lesions...
May 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28777810/green-tea-polyphenol-treatment-attenuates-atherosclerosis-in-high-fat-diet-fed-apolipoprotein-e-knockout-mice-via-alleviating-dyslipidemia-and-up-regulating-autophagy
#6
Shibin Ding, Jinjin Jiang, Pengxin Yu, Guofu Zhang, Guanghui Zhang, Xiaoting Liu
BACKGROUND: Green tea polyphenol (GTP) is a polyphenol source from green tea that has drawn wide attention owing to epidemiological evidence of its beneficial effects in the prevention of cardiovascular disease; the underlying molecular mechanisms of these effects are not well understood. This study aimed to investigate the effects of GTP treatment on autophagy regulation in the vessel wall and lipid metabolism of HFD-fed male ApoE-knockout mice. METHODS: Adult male ApoE-knockout mice (n = 30) fed with a high-fat diet (HFD) were treated with either vehicle or GTP (3...
2017: PloS One
https://www.readbyqxmd.com/read/28771614/trem-1-snp-rs2234246-regulates-trem-1-protein-and-mrna-levels-and-is-associated-with-plasma-levels-of-l-selectin
#7
Alex-Ander Aldasoro Arguinano, Sébastien Dadé, Maria Stathopoulou, Marc Derive, Ndeye Coumba Ndiaye, Ting Xie, Christine Masson, Sébastien Gibot, Sophie Visvikis-Siest
High levels of TREM-1 are associated with cardiovascular and inflammatory diseases risks and the most recent studies have showed that TREM-1 deletion or blockade is associated with up to 60% reduction of the development of atherosclerosis. So far, it is unknown whether the levels of TREM-1 protein are genetically regulated. Moreover, TREM family receptors have been suggested to regulate the cellular adhesion process. The goal of this study was to investigate whether polymorphisms within TREM-1 are regulating the variants of serum TREM-1 levels and the expression levels of their mRNA...
2017: PloS One
https://www.readbyqxmd.com/read/28765952/mtor-signaling-promotes-foam-cell-formation-and-inhibits-foam-cell-egress-through-suppressing-the-sirt1-signaling-pathway
#8
Haixiang Zheng, Yucai Fu, Yusheng Huang, Xinde Zheng, Wei Yu, Wei Wang
Atherosclerosis (AS) is a chronic immuno‑inflammatory disease accompanied by dyslipidemia. The authors previously demonstrated that sirtuin 1 (SIRT1) may prevent atherogenesis through influencing the liver X receptor/C‑C chemokine receptor type 7/nuclear factor‑κB (LXR‑CCR7/NF‑κB) signaling pathway. Previous studies have suggested a role for mammalian target of rapamycin (mTOR) signaling in the pathogenesis of cardiovascular diseases. The present study investigated the potential association between mTOR signaling and SIRT1‑LXR‑CCR7/NF‑κB signaling (SIRT1 signaling) in AS pathogenesis...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28765731/combining-potent-statin-therapy-with-other-drugs-to-optimize-simultaneous-cardiovascular-and-metabolic-benefits-while-minimizing-adverse-events
#9
REVIEW
Kwang Kon Koh, Ichiro Sakuma, Kazunori Shimada, Toshio Hayashi, Michael J Quon
Hypercholesterolemia and hypertension are among the most important risk factors for cardiovascular (CV) disease. They are also important contributors to metabolic diseases including diabetes that further increase CV risk. Updated guidelines emphasize targeted reduction of overall CV risks but do not explicitly incorporate potential adverse metabolic outcomes that also influence CV health. Hypercholesterolemia and hypertension have synergistic deleterious effects on interrelated insulin resistance and endothelial dysfunction...
July 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28760743/hypoxia-inducible-protein-2-hig2-hilpda-mediates-neutral-lipid-accumulation-in-macrophages-and-contributes-to-atherosclerosis-in-apolipoprotein-e-deficient-mice
#10
Anja Maier, Hao Wu, Nada Cordasic, Peter Oefner, Barbara Dietel, Christoph Thiele, Alexander Weidemann, Kai-Uwe Eckardt, Christina Warnecke
Recently we identified hypoxia-inducible protein 2 (HIG2)/hypoxia-inducible lipid droplet associated (HILPDA) as lipid droplet (LD) protein. Because HILPDA is highly expressed in atherosclerotic plaques, we examined its regulation and function in murine macrophages, compared it to the LD adipose differentiation-related protein (Adrp)/perilipin 2 (Plin2), and investigated its effects on atherogenesis in apolipoprotein E-deficient (ApoE(-/-)) mice. Tie2-Cre-driven Hilpda knockout (cKO) did not affect viability, proliferation, and ATP levels in macrophages...
July 31, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28758430/calpain-inhibitor-attenuates-atherosclerosis-and-inflammation-in-atherosclerotic-rats-through-enos-no-nf-%C3%AE%C2%BAb-pathway
#11
Lan Yu, Meihui Yin, Xueyan Yang, Meili Lu, Futian Tang, Hongxin Wang
We previously reported that calpain, the Ca2+-sensitive cysteine protease, gets involved in the atherogenesis. This study was to investigate the effects of calpain inhibitor (CAI, 5 mg/kg/d) with or without NG-nitro-L-arginine-methyl ester (L-NAME) (100 mg/kg/d), the inhibitor of nitric oxide synthase (NOS), on atherosclerosis and inflammation in rat model induced by high cholesterol diet (HCD). The results demonstrated HCD increased protein expression of calpain-1 but not calpain-2 in aortic tissue. In addition, CAI reduced the thickness of atherosclerotic intima compared to HCD group, which was weakened by the L-NAME combination...
July 30, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28746808/effects-of-kisspeptin-on-diabetic-rat-platelets
#12
Zsófia Mezei, Sándor Váczi, Viktória Török, Csaba Stumpf, Rita Ónody, Imre Földesi, Gyula Szabó
Hyperglycemia, hyperlipidemia and free radicals result in platelet activation and atherogenesis. Kisspeptin (KP) is able to regulate metabolism, hemostasis and the development of atherosclerosis. We examined whether platelet aggregation of streptozotocin-induced diabetic rats depends on the inducer type and if KP-13 and RF-9 (a kisspeptin receptor modifier) can influence platelet function. We measured the speed and the maximum of aggregation, along with the area under the curve. Serum glucose and calcium levels and urine formation of diabetic animals increased, while the body weight and platelet count decreased...
July 26, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28743785/bubr1-insufficiency-results-in-decreased-macrophage-proliferation-and-attenuated-atherogenesis-in-apolipoprotein-e-deficient-mice
#13
(no author information available yet)
No abstract text is available yet for this article.
July 25, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28743735/lilrb4-deficiency-aggravates-the-development-of-atherosclerosis-and-plaque-instability-by-increasing-the-macrophage-inflammatory-response-via-nf-%C3%AE%C2%BAb-signaling
#14
Zhou Jiang, Juan-Juan Qin, Yaxing Zhang, Wen-Lin Cheng, Yan-Xiao Ji, Fu-Han Gong, Xue-Yong Zhu, Yan Zhang, Zhi-Gang She, Zan Huang, Hongliang Li
Atherosclerosis is a chronic inflammatory disease. LILRB4 is associated with the pathological processes of various inflammatory diseases. However, the potential function and underlying mechanisms of LILRB4 in atherogenesis remain to be investigated. In this study, LILRB4 expression was examined in both human and mouse atherosclerotic plaques. The effects and possible mechanisms of LILRB4 in atherogenesis and plaque instability were evaluated in LILRB4(-/-)ApoE(-/-) and ApoE(-/-) mice fed a high-fat diet. We found that LILRB4 was located primarily in macrophages, and its expression was up-regulated in atherosclerotic lesions from human coronary arteries and mouse aortic roots...
July 25, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28740544/interleukin-32%C3%AE-inhibits-endothelial-inflammation-vascular-smooth-muscle-cell-activation-and-atherosclerosis-by-upregulating-timp3-and-reck-through-suppressing-microrna-205-biogenesis
#15
Dong Ju Son, Yu Yeon Jung, Young Sik Seo, Heonyong Park, Dong Hun Lee, Sanghyeon Kim, Yoon-Seok Roh, Sang Bae Han, Do Young Yoon, Jin Tae Hong
Interleukin-32 (IL-32) is a multifaceted cytokine that promotes inflammation and regulates vascular endothelial cell behavior. Although some IL-32 isoforms have been reported to contribute to vascular inflammation and atherosclerosis, the functional role of IL-32α in vascular inflammation and atherogenesis has not been studied. Methods: IL-32α function was assessed in cells with transient IL-32α overexpression or treated with recombinant human IL-32α by western blotting and mRNA expression analysis. Vascular smooth muscle cell (VSMC) proliferation and migration was examined by BrdU incorporation and wound healing assays, respectively...
2017: Theranostics
https://www.readbyqxmd.com/read/28739472/toll-like-receptor-4-signaling-improved-the-migration-of-sca-1-stem-progenitor-cells
#16
Ying Huang, Chunya Zhang, Jinghua Shen, Xiaogang Zhang, Jianqing Du, Daifu Zhang
Atherosclerosis is considered as a chronic inflammatory process, during which macrophages and smooth muscle cells migrate into the vascular wall intima to initiate atherogenesis. Stem/progenitor cells (SPCs) have been demonstrated as a new source of monocytes/macrophages and smooth muscle cells (SMCs). However, the regulation of SPCs migration into atherosclerotic initiation sites to produce macrophages and SMCs in-situis not fully elucidated. As toll-like receptor (TLRs) signaling plays essential role in migration of immunocytes, we wanted to explore the expression and function of TLRs in SPCs in detail...
July 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28735290/membrane-tethered-metalloproteinase-expressed-by-vascular-smooth-muscle-cells-limits-the-progression-of-proliferative-atherosclerotic-lesions
#17
Richard H Barnes, Takeshi Akama, Miina K Öhman, Moon-Sook Woo, Julian Bahr, Stephen J Weiss, Daniel T Eitzman, Tae-Hwa Chun
BACKGROUND: The MMP (matrix metalloproteinase) family plays diverse and critical roles in directing vascular wall remodeling in atherosclerosis. Unlike secreted-type MMPs, a member of the membrane-type MMP family, MT1-MMP (membrane-type 1 MMP; MMP14), mediates pericellular extracellular matrix degradation that is indispensable for maintaining physiological extracellular matrix homeostasis. However, given the premature mortality exhibited by MT1-MMP-null mice, the potential role of the proteinase in atherogenesis remains elusive...
July 22, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28735076/quantifying-the-influence-of-oscillatory-flow-disturbances-on-blood-flow
#18
Sargon A Gabriel, Yan Ding, Yuqing Feng
Pulsatile blood flow is renowned for inducing localised flow disturbances that are characterised by significant oscillations. These flow disturbances are recognised to have a physiologic significance within the cardiovascular system, particularly with respect to their proatherogenic expression on endothelial cells. Flow disturbances also impart significant influence on the mechanics of cardiovascular flow and are formally shown in the present study to be coupled to the period-average behaviour of a pulsatile flow field, causing it to be misrepresented by its steady-equivalent; which is often used in models of atherogenesis and hence limits their reliability...
July 19, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28724798/hepatic-jak2-protects-against-atherosclerosis-through-circulating-igf-1
#19
Tharini Sivasubramaniyam, Stephanie A Schroer, Angela Li, Cynthia T Luk, Sally Yu Shi, Rickvinder Besla, David W Dodington, Adam H Metherel, Alex P Kitson, Jara J Brunt, Joshua Lopes, Kay-Uwe Wagner, Richard P Bazinet, Michelle P Bendeck, Clinton S Robbins, Minna Woo
Atherosclerosis is considered both a metabolic and inflammatory disease; however, the specific tissue and signaling molecules that instigate and propagate this disease remain unclear. The liver is a central site of inflammation and lipid metabolism that is critical for atherosclerosis, and JAK2 is a key mediator of inflammation and, more recently, of hepatic lipid metabolism. However, precise effects of hepatic Jak2 on atherosclerosis remain unknown. We show here that hepatic Jak2 deficiency in atherosclerosis-prone mouse models exhibited accelerated atherosclerosis with increased plaque macrophages and decreased plaque smooth muscle cell content...
July 20, 2017: JCI Insight
https://www.readbyqxmd.com/read/28723696/advanced-glycation-end-products-downregulate-hoxa9ec-through-activation-of-nuclear-factor-kappa-b-by-reciprocal-interaction
#20
Qian-Qian Zhu, Dong-Lin Li, Yang-Yan He, Zi-Heng Wu, Lu Tian, Cheng-Fei Zheng, Nan Zhang, Hong-Kun Zhang
Advanced glycation end-products (AGEs) have been recognized as an important pathophysiological mechanism in endothelial dysfunction during diabetic atherogenesis. Homeobox (Hox) genes have been identified as playing a regulatory role in the adult cardiovascular system. Regulation of HoxA9EC is involved in diabetic endothelial dysfunction, but the mechanism of HoxA9EC regulation has remained undefined. Here, we sought to investigate how HoxA9EC is regulated in AGE-induced endothelial dysfunction and to explore the mechanism involved...
July 20, 2017: Journal of Vascular Research
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