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Vascular smooth muscle cells

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https://www.readbyqxmd.com/read/28222247/bile-acids-and-cardiovascular-function-in-cirrhosis
#1
Andrei Voiosu, Signe Wiese, Theodor Voiosu, Flemming Bendtsen, Søren Møller
Cirrhotic cardiomyopathy and the hyperdynamic syndrome are clinically important complications of cirrhosis but their exact pathogenesis is still partly unknown. Experimental models have proven the cardiotoxic effects of bile acidsand recent studies of their varied receptor-mediated functions offer new insight into their involvement in cardiovascular dysfunction in cirrhosis. Bile acid receptors such as farnesoid X-activated receptor and TGR5 are currently under investigation as potential therapeutic targets in a variety of pathological conditions...
February 21, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28220880/parenteral-administration-of-factor-xa-iia-inhibitors-limits-experimental-aortic-aneurysm-and-atherosclerosis
#2
Corey S Moran, Sai-Wang Seto, Smriti M Krishna, Surabhi Sharma, Roby J Jose, Erik Biros, Yutang Wang, Susan K Morton, Jonathan Golledge
Intraluminal thrombus is a consistent feature of human abdominal aortic aneurysm (AAA). Coagulation factor Xa (FXa) catalyses FII to thrombin (FIIa). We examined the effect of FXa/FIIa inhibition on experimental aortic aneurysm in apolipoprotein E-deficient (ApoE(-/-)) mice infused with angiotensin II (AngII). The concentration of FXa within the supra-renal aorta (SRA) correlated positively with SRA diameter. Parenteral administration of enoxaparin (FXa/IIa inhibitor) and fondaparinux (FXa inhibitor) over 14 days reduced to severity of aortic aneurysm and atherosclerosis in AngII-infused ApoE(-/-) mice...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28219134/-role-of-nuclear-factor-of-activated-t-cells-cytoplasmic-1-on-vascular-calcification-in-rats-with-chronic-renal-failure
#3
J X Zhang, J S Xu, Y Y Han, Y L Bai, L W Cui, H R Zhang, S L Zhang
Objective: To explore the role of nuclear factor of activated T-cells cytoplasmic 1 (NFATc1) on vascular calcification in chronic renal failure rats. Methods: Nineteen male Sprague-Dawley (SD) rats were randomly divided into three groups: sham-operated group (n=6), 5/6 Nephrectomy (Nx) group (n=6), 5/6 Nx+ calcitriol group (n=7). Vascular calcification was determined by von Kossa staining and orthocresolphthalein complexone (OCPC) method. Protein expressions of NFATc1 and runt-related transcription factor 2 (Runx2) in aortas were measured by immunohistochemistry...
February 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28218456/endothelial-cells-inhibit-the-angiotensin-ii-induced-phenotypic-modulation-of-rat-vascular-fibroblasts
#4
Xu Jia-Ying, Chang Nen-Bin, Li Tao, Jiang Rui, Sun Xiao-Lei, He Yan-Zheng, Jiang Jun
PURPOSE: The phenotypic modulation of vascular adventitial fibroblasts plays an important role in vascular remodeling. Evidence have shown that endothelial cells and adventitial fibroblasts interact under certain conditions. In this study, we investigated the influence of endothelial cells on the phenotypic modulation of adventitial fibroblasts. METHODS: Endothelial cells and adventitial fibroblasts from rat thoracic aorta were cultivated in a co-culture system and adventitial fibroblasts were induced with angiotensin II (Ang II)...
February 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28218221/gene-expressions-underlying-mishandled-calcium-clearance-and-elevated-generation-of-reactive-oxygen-species-in-the-coronary-artery-smooth-muscle-cells-of-chronic-heart-failure-rats
#5
Liang Ding, Xian-Xiu Su, Wen-Hui Zhang, Yu-Xiang Xu, Xue-Feng Pan
BACKGROUND: The calcium clearance and reactive oxygen species (ROS) generations in the coronary artery smooth muscle cells in chronic heart failure (HF) have not been fully investigated. Therefore, we attempted to understand the gene expressions underlying the mishandling of calcium clearance and the accumulations of ROS. METHODS: We initially established an animal model of chronic HF by making the left anterior descending coronary artery ligation (CAL) in rats, and then isolated the coronary artery vascular smooth muscle cells from the ischemic and the nonischemic parts of the coronary artery vessels in 12 weeks after CAL operation...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28217663/a-case-of-intra-articular-angioleiomyoma-of-the-talocrural-joint
#6
Irene Thung, Sepi Mahooti, Xiangdong Xu
Angioleiomyoma is a benign pericytic neoplasm with smooth muscle differentiation. Intra-articular angioleiomyoma is exceptionally rare with only four cases reported, all involving the knee joint. Here we report the first case of intra-articular angioleiomyoma entirely localized within the ankle joint. An 83-year-old male presented with progressively worsening ankle pain. Subsequent magnetic resonance imaging showed a soft tissue mass within the talocrural joint. Histologic examination and ancillary testing demonstrated fascicles of smooth muscle cells and interspersed, often compressed, vascular channels, consistent with an angioleiomyoma...
October 2016: Joints
https://www.readbyqxmd.com/read/28217447/aging-related-erectile-dysfunction-potential-mechanism-to-halt-or-delay-its-onset
#7
REVIEW
Monica G Ferrini, Nestor F Gonzalez-Cadavid, Jacob Rajfer
Erectile dysfunction (ED) will visit every man at some time in his life. The age at when that knock on the door is heard is totally dependent on one's genetics as well as other extrinsic factors. Unlike guests who come for a visit and then leave, once ED shows up it tends to hang around forever. To add insult to injury, the longer ED hangs around, the worse it will get. It is estimated that by the time a man is in his 40's, he has about a 40% chance of having some form of ED and this prevalence increases about 10% per decade thereafter...
February 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28214880/mir-29b-downregulation-induces-phenotypic-modulation-of-vascular-smooth-muscle-cells-implication-for-intracranial-aneurysm-formation-and-progression-to-rupture
#8
Liqian Sun, Manman Zhao, Jingbo Zhang, Ming Lv, Youxiang Li, Xinjian Yang, Aihua Liu, Zhongxue Wu
BACKGROUND/AIMS: Our previous microarray results identified numerous microRNAs (miRNAs), including miR-29b, that were differentially expressed in the serum of intracranial aneurysm (IA) patients. The current study aimed to investigate whether miR-29b downregulation in IA could promote the phenotypic modulation of vascular smooth muscle cells (VSMCs) involved in the pathogenesis of aneurysm by activating ATG14-mediated autophagy. METHODS: First, the levels of miR-29b and autophagy related genes (ATGs) between IA patients and normal subjects were compared...
January 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28213290/zd0947-a-sulphonylurea-receptor-modulator-detects-functional-sulphonylurea-receptor-subunits-in-murine-vascular-smooth-muscle-atp-sensitive-k-channels
#9
Tadashi Yamamoto, Kohei Takahara, Keiichiro Uchida, Noriyoshi Teramoto
In order to identify functional sulphonylurea receptor (SUR.x) subunits of native ATP-sensitive K(+) channels (KATP channels) in mouse portal vein, the effects of ZD0947, a SUR.x modulator, were investigated on spontaneous portal vein contractions, macroscopic membrane currents and unitary currents recorded (using patch-clamp techniques) in freshly dispersed mouse portal vein myocytes. Spontaneous contractions in mouse portal vein were reversibly reduced by ZD0947 in a concentration-dependent manner (Ki = 293nM)...
February 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28213288/inhibition-of-estrogen-related-receptor-%C3%AE-attenuates-vascular-smooth-muscle-cell-proliferation-and-migration-by-regulating-rhoa-p27-kip1-and-%C3%AE-catenin-wnt4-signaling-pathway
#10
Qunyi Li, Lei Zhu, Liudi Zhang, Haifei Chen, Yingfeng Zhu, Yongli Du, Wanxian Zhong, Mingkang Zhong, Xiaojin Shi
RhoA/p27(Kip1) and β-Catenin/Wnt4 signaling processes play central roles in proliferation and migration in vascular smooth muscle cells (VSMCs). ERRα, a member of orphan nuclear receptors, is a potent prognostic factor in breast, ovarian, colon and other types of tumors. However, biological significance of ERRα in VSMCs as well as the molecular mechanisms remains largely unknown. Therefore, the present study was designed to investigate whether ERRα is involved in the proliferation and migration of VSMCs in vitro and neointimal formation in vivo...
February 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28212891/sulforaphane-inhibits-platelet-derived-growth-factor-induced-vascular-smooth-muscle-cell-proliferation-by-targeting-mtor-p70s6kinase-signaling-independent-of-nrf2-activation
#11
Noha M Shawky, Lakshman Segar
Activation of nuclear factor erythroid 2-related factor 2 (Nrf2, a transcription factor) and/or inhibition of mammalian target of rapamycin (mTOR) are implicated in the suppression of vascular smooth muscle cell (VSMC) proliferation. The present study has examined the likely regulatory effects of sulforaphane (SFN, an antioxidant) on Nrf2 activation and platelet-derived growth factor (PDGF)-induced mTOR signaling in VSMCs. Using human aortic VSMCs, nuclear extraction and siRNA-mediated downregulation studies were performed to determine the role of Nrf2 on SFN regulation of PDGF-induced proliferative signaling...
February 14, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28212823/cyp-epoxygenase-derived-h2o2-is-involved-in-the-endothelium-derived-hyperpolarization-edh-and-relaxation-of-intrarenal-arteries
#12
Mercedes Muñoz, Maria Elvira López-Oliva, Estéfano Pinilla, María Pilar Martínez, Ana Sánchez, Claudia Rodríguez, Albino García-Sacristán, Medardo Hernández, Luis Rivera, Dolores Prieto
Reactive oxygen species (ROS) like hydrogen peroxide (H2O2) are involved in the in endothelium-derived hyperpolarization (EDH)-type relaxant responses of coronary and mesenteric arterioles. The role of ROS in kidney vascular function has mainly been investigated in the context of harmful ROS generation associated to kidney disease. The present study was sought to investigate whether H2O2 is involved in the endothelium-dependent relaxations of intrarenal arteries as well the possible endothelial sources of ROS generation involved in these responses...
February 14, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28212804/potassium-channels-in-regulation-of-vascular-smooth-muscle-contraction-and-growth
#13
W F Jackson
Potassium channels importantly contribute to the regulation of vascular smooth muscle (VSM) contraction and growth. They are the dominant ion conductance of the VSM cell membrane and importantly determine and regulate membrane potential. Membrane potential, in turn, regulates the open-state probability of voltage-gated Ca(2+) channels (VGCC), Ca(2+) influx through VGCC, intracellular Ca(2+), and VSM contraction. Membrane potential also affects release of Ca(2+) from internal stores and the Ca(2+) sensitivity of the contractile machinery such that K(+) channels participate in all aspects of regulation of VSM contraction...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28212803/calcium-channels-in-vascular-smooth-muscle
#14
D Ghosh, A U Syed, M P Prada, M A Nystoriak, L F Santana, M Nieves-Cintrón, M F Navedo
Calcium (Ca(2+)) plays a central role in excitation, contraction, transcription, and proliferation of vascular smooth muscle cells (VSMs). Precise regulation of intracellular Ca(2+) concentration ([Ca(2+)]i) is crucial for proper physiological VSM function. Studies over the last several decades have revealed that VSMs express a variety of Ca(2+)-permeable channels that orchestrate a dynamic, yet finely tuned regulation of [Ca(2+)]i. In this review, we discuss the major Ca(2+)-permeable channels expressed in VSM and their contribution to vascular physiology and pathology...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28212801/notch-signaling-in-vascular-smooth-muscle-cells
#15
J T Baeten, B Lilly
The Notch signaling pathway is a highly conserved pathway involved in cell fate determination in embryonic development and also functions in the regulation of physiological processes in several systems. It plays an especially important role in vascular development and physiology by influencing angiogenesis, vessel patterning, arterial/venous specification, and vascular smooth muscle biology. Aberrant or dysregulated Notch signaling is the cause of or a contributing factor to many vascular disorders, including inherited vascular diseases, such as cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, associated with degeneration of the smooth muscle layer in cerebral arteries...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28212798/protein-kinase-c-as-regulator-of-vascular-smooth-muscle-function-and-potential-target-in-vascular-disorders
#16
H C Ringvold, R A Khalil
Vascular smooth muscle (VSM) plays an important role in maintaining vascular tone. In addition to Ca(2+)-dependent myosin light chain (MLC) phosphorylation, protein kinase C (PKC) is a major regulator of VSM function. PKC is a family of conventional Ca(2+)-dependent α, β, and γ, novel Ca(2+)-independent δ, ɛ, θ, and η, and atypical ξ, and ι/λ isoforms. Inactive PKC is mainly cytosolic, and upon activation it undergoes phosphorylation, maturation, and translocation to the surface membrane, the nucleus, endoplasmic reticulum, and other cell organelles; a process facilitated by scaffold proteins such as RACKs...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28212797/ca-2-calmodulin-dependent-protein-kinase-ii-in-vascular-smooth-muscle
#17
F Z Saddouk, R Ginnan, H A Singer
Ca(2+)-dependent signaling pathways are central regulators of differentiated vascular smooth muscle (VSM) contractile function. In addition, Ca(2+) signals regulate VSM gene transcription, proliferation, and migration of dedifferentiated or "synthetic" phenotype VSM cells. Synthetic phenotype VSM growth and hyperplasia are hallmarks of pervasive vascular diseases including hypertension, atherosclerosis, postangioplasty/in-stent restenosis, and vein graft failure. The serine/threonine protein kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a ubiquitous mediator of intracellular Ca(2+) signals...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28211642/biomechanical-strain-exacerbates-inflammation-on-a-progeria-on-a-chip-model
#18
João Ribas, Yu Shrike Zhang, Patrícia R Pitrez, Jeroen Leijten, Mario Miscuglio, Jeroen Rouwkema, Mehmet Remzi Dokmeci, Xavier Nissan, Lino Ferreira, Ali Khademhosseini
Organ-on-a-chip platforms seek to recapitulate the complex microenvironment of human organs using miniaturized microfluidic devices. Besides modeling healthy organs, these devices have been used to model diseases, yielding new insights into pathophysiology. Hutchinson-Gilford progeria syndrome (HGPS) is a premature aging disease showing accelerated vascular aging, leading to the death of patients due to cardiovascular diseases. HGPS targets primarily vascular cells, which reside in mechanically active tissues...
February 17, 2017: Small
https://www.readbyqxmd.com/read/28211187/deletion-of-junctional-adhesion-molecule-a-from-platelets-increases-early-stage-neointima-formation-after-wire-injury-in-hyperlipidemic-mice
#19
Zhen Zhao, Tanja Vajen, Ela Karshovska, Annemiek Dickhout, Martin M Schmitt, Remco T A Megens, Philipp von Hundelshausen, Thomas A Koeppel, Tilman M Hackeng, Christian Weber, Rory R Koenen
Platelets play an important role in the pathogenesis of vascular remodelling after injury. Junctional adhesion molecule A (JAM-A) was recently described to regulate platelet activation. Specific deletion of JAM-A from platelets resulted in increased reactivity and in accelerated progression of atherosclerosis. The aim of this study was to investigate the specific contribution of platelet-derived JAM-A to neointima formation after vascular injury. Mice with or without platelet-specific (tr)JAM-A-deficiency in an apolipoprotein e (apoe(-/-) ) background underwent wire-induced injury of the common carotid artery...
February 17, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28210025/vascular-lipoleiomyoma-of-the-uterus-an-unusual-case
#20
Vesna Chibisheva, Vesna Antovska, Milka Trajanova, Drage Dabeski, Rubens Jovanovic, Ivana Kijajova
INTRODUCTION: Uterine lipoleiomyomas are a rare type of uterine myomas, which have been seldom diagnosed and are less known and still unusual. Histologically they are composed of smooth muscle cells with multiple fat cells and fibrous tissue. Their pathogenesis is still a stigmata and their preoperative diagnosis is still questionable. CASE REPORT HISTORY: A 39-year old woman presented at the University clinic for obstetrics and gynecology with complaints of a mild low abdominal and pelvic pain, increased frequency of vaginal bleeding and abdominal distension...
December 2016: Medical Archives
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