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https://www.readbyqxmd.com/read/28927755/protein-kinase-ck2-inhibition-suppresses-neointima-formation-via-a-proline-rich-homeodomain-dependent-mechanism
#1
K S Wadey, B A Brown, G B Sala-Newby, P-S Jayaraman, K Gaston, S J George
Neointimal hyperplasia is a product of VSMC replication and consequent accumulation within the blood vessel wall. In this study, we determined whether inhibition of protein kinase CK2 and the resultant stabilisation of proline-rich homeodomain (PRH) could suppress VSMC proliferation. Both silencing and pharmacological inhibition of CK2 with K66 antagonised replication of isolated VSMCs. SiRNA-induced knockdown as well as ectopic overexpression of proline-rich homeodomain indicated that PRH disrupts cell cycle progression...
September 16, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28925164/-effects-of-icariin-on-proliferation-of-vascular-smooth-muscle-cell-induced-by-ox-ldl-via-impacting-mapk-signaling-pathway
#2
Yan-Wu Hu, Hai-Tao Li, Kai Liu, Meng-Tong Yan, Yang Zhang, Li-Qun Ren
This paper was aimed to study the effects of icariin (ICA) on the proliferation of vascular smooth muscle cell (VSMC) induced by oxidized low density lipoprotein (ox-LDL), and the molecular mechanism of the expression of proliferating cell nuclear antigen (PCNA) and MAPK signaling pathway. In this study, VSMC was induced by ox-LDL (50 mg•L⁻¹),the effect of ICA on the proliferation of VSMC was detected by MTT assay, Western blot and Real-time PCR. The results showed that after stimulation of ox-LDL, the proliferation activity of VSMC was increased, S phase, G₂/M phase cells were increased, G₀/G₁ phase cells were decreased, PCNA protein expression was enhanced; ICA (40, 20, 10 μmol•L⁻¹) could effectively inhibit ox-LDL-induced VSMC proliferation, S phase and G₂/M phase cells were decreased, the percentage of cells in G₀/G₁ phase were increased, PCNA expression was decreased, p38MAPK and ERK1/2 activation were inhibited...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28924208/chebulinic-acid-inhibits-smooth-muscle-cell-migration-by-suppressing-pdgf-r%C3%AE-phosphorylation-and-inhibiting-matrix-metalloproteinase-2-expression
#3
In-Sung Song, Yu Jeong Jeong, Jung-Hyun Park, Sungbo Shim, Sung-Wuk Jang
Excessive migration of vascular smooth muscle cells (VSMCs) after vascular injury contributes to the development of occlusive vascular disease. Inhibition of VSMC migration is a validated therapeutic modality for occlusive vascular diseases, such as atherosclerosis and restenosis. We investigated the inhibitory effect of chebulinic acid (CBA) on cell migration and matrix metalloproteinase (MMP)-2 activation in platelet-derived growth factor (PDGF)-BB-induced mouse and human VSMCs. CBA significantly inhibited PDGF-BB-induced migration in mouse and human VSMCs, without inducing cell death...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28920957/klf4-dependent-perivascular-cell-plasticity-mediates-pre-metastatic-niche-formation-and-metastasis
#4
Meera Murgai, Wei Ju, Matthew Eason, Jessica Kline, Daniel W Beury, Sabina Kaczanowska, Markku M Miettinen, Michael Kruhlak, Haiyan Lei, Jack F Shern, Olga A Cherepanova, Gary K Owens, Rosandra N Kaplan
A deeper understanding of the metastatic process is required for the development of new therapies that improve patient survival. Metastatic tumor cell growth and survival in distant organs is facilitated by the formation of a pre-metastatic niche that is composed of hematopoietic cells, stromal cells and extracellular matrix (ECM). Perivascular cells, including vascular smooth muscle cells (vSMCs) and pericytes, are involved in new vessel formation and in promoting stem cell maintenance and proliferation. Given the well-described plasticity of perivascular cells, we hypothesized that perivascular cells similarly regulate tumor cell fate at metastatic sites...
September 18, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28919327/endothelial-microparticle-promoted-inhibition-of-vascular-remodeling-is-abrogated-under-hyperglycaemic-conditions
#5
Felix Jansen, Andreas Zietzer, Tobias Stumpf, Anna Flender, Theresa Schmitz, Georg Nickenig, Nikos Werner
BACKGROUND: Endothelial microparticles (EMPs) inhibit vascular remodeling by transferring functional microRNA (miRNA) into target vascular smooth muscle cells (VSMCs). Because EMPs are increased in diabetic patients and potentially linked to vascular complications in diabetes mellitus, we sought to determine whether effects of EMPs generated under high glucose concentration on vascular remodeling might differ from EMPs derived from untreated cells. METHODS AND RESULTS: EMPs were generated from human coronary endothelial cells (HCAEC) exposed to high glucose concentrations in order to mimic diabetic conditions...
September 14, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28918014/artificial-zinc-finger-transcription-factor-of-a20-suppresses-restenosis-in-sprague-dawley-rats-after-carotid-injury-via-the-ppar%C3%AE-pathway
#6
Zhaoyou Meng, Pan Gao, Lin Chen, Jing Peng, Jialu Huang, Min Wu, Kangning Chen, Zhenhua Zhou
The inhibition of inflammation and vascular smooth muscle cell (VSMC) proliferation is an ideal strategy to suppress intimal hyperplasia after percutaneous transluminal angioplasty (PTA). Evidence has indicated that overexpression of A20 suppresses neointima formation, but its low transfection efficiency limits its application. Hence, we upregulated A20 expression via transfection of rAd.ATF (recombinant adenovirus vector of artificial transcription factor) and rAd.A20 in rat carotid arteries after balloon dilatation (in vivo) and isolated VSMCs (in vitro)...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28912364/novel-pathological-role-of-hnrnpa1-heterogeneous-nuclear-ribonucleoprotein-a1-in-vascular-smooth-muscle-cell-function-and-neointima-hyperplasia
#7
Li Zhang, Qishan Chen, Weiwei An, Feng Yang, Eithne Margaret Maguire, Dan Chen, Cheng Zhang, Guanmei Wen, Mei Yang, Bin Dai, Le Anh Luong, Jianhua Zhu, Qingbo Xu, Qingzhong Xiao
OBJECTIVE: hnRNPA1 (heterogeneous nuclear ribonucleoprotein A1) plays a variety of roles in gene expression. However, little is known about the functional involvement of hnRNPA1 in vascular smooth muscle cell (VSMC) function and neointima hyperplasia. In this study, we have attempted to investigate the functional roles of hnRNPA1 in the contexts of VSMC function, injury-induced vessel remodeling, and human atherosclerotic lesions, as well as discern the molecular mechanisms involved. APPROACH AND RESULTS: hnRNPA1 expression levels were consistently modulated during VSMC phenotype switching and neointimal lesion formation induced by wire injury...
September 14, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28910587/trichosanthin-attenuates-vascular-injury-induced-neointimal-hyperplasia-following-balloon-catheter-injury-in-rats
#8
Min Qiu, Zheng Yang, Xiao-Hua Guo, Yu-Ting Song, Ming An, Guo-Jun Zhao, Miao Song, Xiao-Min Zhao, Yun-Shan Zhao, Quan-Li Liu
Trichosanthin (TCS), isolated from the root tuber of Trichosantheskirilowii, a well-known traditional Chinese medicinal plant, belonging to the Cucurbitaceae family, was found to exhibit numerous biological and pharmacological activities including anti-inflammatory. However, the effects of TCS on arterial injury induced neointimal hyperplasia and inflammatory cell infiltration remains poorly understood. The aim of study was to examine the effectiveness of TCS on arterial injury-mediated inflammatory processes and underlying mechanisms...
September 14, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28910498/phosphodiesterase-1a-inhibition-elicits-cgmp-dependent-relaxation-of-rat-mesenteric-arteries
#9
Makhala Michell Khammy, Thomas Dalsgaard, Peter Hjørringgaard Larsen, Claus Tornby Christoffersen, Dorte Clausen, Lars Kyhn Rasmussen, Lasse Folkersen, Morten Grunnet, Jan Kehler, Christian Aalkjaer, Jacob Nielsen
BACKGROUND AND PURPOSE: Phosphodiesterase 1 (PDE1), a subfamily of cyclic nucleotide phosphodiesterases consisting of three isoforms, PDE1A, PDE1B, and PDE1C, has been implicated in regulation of vascular tone. The PDE1 isoform(s) responsible for tone regulation is unknown. This study used isoform-preferring PDE1 inhibitors, Lu AF58027, Lu AF64196, Lu AF66896, and Lu AF67897, to investigate the relative contribution of PDE1 isoforms to regulation of vascular tone. EXPERIMENTAL APPROACH: In rat mesenteric arteries, expression and localisation of Pde1 isoforms were determined by qPCR and in situ hybridisation, and physiological impact of PDE1 inhibition were evaluated by isometric tension recordings...
September 14, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28890348/mir-362-3p-inhibits-the-proliferation-and-migration-of-vascular-smooth-muscle-cells-in-atherosclerosis-by-targeting-adamts1
#10
Meiling Li, Qing Liu, Jiayan Lei, Xiaoliang Wang, Xiaoyun Chen, Yanhui Ding
Atherosclerosis is a progressive condition of the large arteries that can cause coronary artery disease (CAD). Growing amounts of evidence have indicated that microRNAs (miRNAs, miRs) can be used as diagnostic biomarkers in many cellular processes associated with CAD. MiR-362-3p has been implicated in many biological cellular functions. However, little is known about the role of miR-362-3p during atherosclerosis. In the present study, significant downregulation of miR-362-3p was observed in 110 atherosclerotic CAD patients and not in the 84 controls...
September 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28886156/loss-of-sprr3-in-apoe-mice-leads-to-atheroma-vulnerability-through-akt-dependent-and-independent-effects-in-vsmcs
#11
Caressa D Lietman, Amanda K Segedy, Bin Li, Sergio Fazio, James B Atkinson, MacRae F Linton, Pampee P Young
Vascular smooth muscle cells (VSMCs) represent important modulators of plaque stability in advanced lesions. We previously reported that loss of small proline-rich repeat protein 3 (Sprr3), leads to VSMC apoptosis in a PI3K/Akt-dependent manner and accelerates lesion progression. Here, we investigated the role of Sprr3 in modulating plaque stability in hyperlipidemic ApoE-/- mice. We show that loss of Sprr3 increased necrotic core size and reduced cap collagen content of atheromas in brachiocephalic arteries with evidence of plaque rupture and development of intraluminal thrombi...
2017: PloS One
https://www.readbyqxmd.com/read/28881271/factor-vii-activating-protease-fsap-regulates-the-expression-of-inflammatory-genes-in-vascular-smooth-muscle-and-endothelial-cells
#12
Kristina Byskov, Thomas Boettger, Paul F Ruehle, Nis Valentin Nielsen, Michael Etscheid, Sandip M Kanse
BACKGROUND AND AIMS: The factor VII activating protease (FSAP) knockout mice have a bigger neointima after vascular injury and a larger infarct volume after stroke. The Marburg I (MI) single nucleotide polymorphism (SNP) in the FSAP-encoding gene is associated with an increased risk of stroke and carotid stenosis in humans. We hypothesize that the regulation of gene expression by FSAP in vascular cells accounts for its vasculo-regulatory properties. METHODS: Vascular smooth muscle cells (VSMC) and endothelial cells (EC) were stimulated with FSAP and a microarray-based expression analysis was performed...
August 25, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28871467/epigallocatechin-gallate-protects-against-homocysteine-induced-vascular-smooth-muscle-cell-proliferation
#13
Xiao Li Zhan, Xiu Hong Yang, Yan Hong Gu, Li Li Guo, Hui Min Jin
Epigallocatechin gallate (EGCG), a bioactive ingredient of green tea, plays a protective role in the cardiovascular system. Homocysteine (Hcy) is a major risk factor for chronic kidney disease and cardiovascular disease. The present study aimed to investigate the role of EGCG in Hcy-induced proliferation of vascular smooth muscle cells (VSMCs) and its underlying mechanism. We also explored the roles of rennin-angiotensin system (RAS), extracellular signal-regulated kinases (ERK1/2), and p38 mitogen-activated protein kinase (p38 MAPK) in this process...
September 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28868076/glycation-of-high-density-lipoprotein-triggers-oxidative-stress-and-promotes-the-proliferation-and-migration-of-vascular-smooth-muscle-cells
#14
Qian Du, Ming-Ming Qian, Pin-Li Liu, Le Zhang, Yan Wang, Dong-Hui Liu
BACKGROUND: In type 2 diabetes mellitus (T2DM), high-density lipoprotein (HDL) impairs its anti-atherogenic properties and even develops to a pro-inflammatory and pro-atherogenic phenotype because of abnormal compositions and modifications. In this study, we examined the effects and the related mechanisms of glycation of HDL on the proliferation and migration of vascular smooth muscle cells (VSMCs). METHODS & RESULTS: Glycated HDL (G-HDL) was modified with D-glucose (25 mmol/L) in vitro...
July 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28865326/hydrogen-sulfide-attenuates-calcification-of-vascular-smooth-muscle-cells-via-keap1-nrf2-nqo1-activation
#15
Parisa Aghagolzadeh, Ramin Radpour, Matthias Bachtler, Harry van Goor, Edward R Smith, Adam Lister, Alex Odermatt, Martin Feelisch, Andreas Pasch
BACKGROUND AND AIMS: Vascular calcification is a common health problem related to oxidative stress, inflammation, and circulating calciprotein particles (CPP). Hydrogen sulfide is an endogenous signaling molecule with antioxidant properties and potential for drug development targeting redox signaling. Yet, its molecular mechanisms of action in vascular smooth muscle cell (VSMC) calcification have not been delineated. We therefore sought to identify key pathways involved in the calcification-inhibitory properties of sulfide employing our recently developed CPP-induced VSMC calcification model...
August 19, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28861648/the-role-of-secondary-calciprotein-particles-in-the-mineralisation-paradox-of-chronic-kidney-disease
#16
Michael M X Cai, Edward R Smith, Sven-Jean Tan, Timothy D Hewitson, Stephen G Holt
Mineralisation paradox is prevalent in chronic kidney disease and ageing where increased vascular calcification is accompanied by reduced bone mineralisation and osteopenia. Secondary calciprotein particles (CPP2), colloidal nanoparticles containing hydroxyapatite crystal stabilised by a protein shell, have been implicated in vascular calcification in chronic kidney disease. Here, we describe the effect of CPP2 on osteoblasts and vascular smooth muscle cells (VSMC) mineralisation in an in vitro model system...
August 31, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28860634/deficiency-of-tlr4-homologue-rp105-aggravates-outward-remodeling-in-a-murine-model-of-arteriovenous-fistula-failure
#17
Taisiya Bezhaeva, ChunYu Wong, Margreet R de Vries, Eric P van der Veer, Carla M A van Alem, Ivo Que, Reshma A Lalai, Anton-Jan van Zonneveld, Joris I Rotmans, Paul H A Quax
Arteriovenous access dysfunction is a major cause of morbidity for hemodialysis patients. The pathophysiology of arteriovenous fistula (AVF) maturation failure is associated with inflammation, impaired outward remodeling (OR) and intimal hyperplasia. RP105 is a critical physiologic regulator of TLR4 signaling in numerous cell types. In the present study, we investigated the impact of RP105 on AVF maturation, and defined cell-specific effects of RP105 on macrophages and vascular smooth muscle cells (VSMCs). Overall, RP105(-/-) mice displayed a 26% decrease in venous OR...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28860223/differentiation-and-application-of-induced-pluripotent-stem-cell-derived-vascular-smooth-muscle-cells
#18
REVIEW
Eithne Margaret Maguire, Qingzhong Xiao, Qingbo Xu
Vascular smooth muscle cells (VSMCs) play a role in the development of vascular disease, for example, neointimal formation, arterial aneurysm, and Marfan syndrome caused by genetic mutations in VSMCs, but little is known about the mechanisms of the disease process. Advances in induced pluripotent stem cell technology have now made it possible to derive VSMCs from several different somatic cells using a selection of protocols. As such, researchers have set out to delineate key signaling processes involved in triggering VSMC gene expression to grasp the extent of gene regulatory networks involved in phenotype commitment...
August 31, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28854428/microrna-222-promotes-the-proliferation-of-pulmonary-arterial-smooth-muscle-cells-by-targeting-p27-and-timp3
#19
Ying Xu, Yihua Bei, Shutong Shen, Jialiang Zhang, Yichao Lu, Junjie Xiao, Xinli Li
BACKGROUND/AIMS: Aberrant vascular smooth muscle cell (VSMC) proliferation plays an important role in the development of pulmonary artery hypertension (PAH). Dysregulated microRNAs (miRNAs, miRs) have been implicated in the progression of PAH. miR-222 has a pro-proliferation effect on VSMCs while it has an anti-proliferation effect on vascular endothelial cells (ECs). As the biological function of a single miRNA could be cell-type specific, the role of miR-222 in pulmonary artery smooth muscle cell (PASMC) proliferation is not clear and deserves to be explored...
August 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28846852/adaptation-of-mitochondrial-expression-and-atp-production-in-dedifferentiating-vascular-smooth-muscle-cells
#20
Celena Scheede-Bergdahl, Andreas Bergdahl
Atherosclerosis is one of the leading causes of morbidity and mortality in the Western world. Although the clinical manifestations of this disease are well documented, the etiology and progression remain to be fully understood. Recently, the mitochondria have been implicated in important cellular processes involved in development of atherosclerosis. Despite the link between mitochondria and atherosclerosis, early phase mechanisms of the disease have yet to be elucidated. The aim of this project was to explore the role of mitochondria in vascular smooth muscle (VSMC) dedifferentiation...
August 28, 2017: Canadian Journal of Physiology and Pharmacology
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