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Bapat Vinayak V Department of Cardiothoracic Surgery, Guy's and St. Thomas' Hospital, London, United - - 2014
Rapid growth in transcatheter heart valve (THV) technology has led to its use in the treatment of degenerated bioprosthetic surgical heart valves (SHV) and failed mitral repairs. Multiple reports of valve-in-valve (VIV) and valve-in-ring (VIR) procedures have appeared in the literature during the last three years. The success of a ...
Kono Kenichi K Department of Neurosurgery, Wakayama Rosai Hospital, 93-1 Kinomoto, Wakayama, 640-8505, Japan, - - 2014
Flow patterns in cerebral aneurysms are clinically important. Information on inflow patterns into aneurysms is especially helpful in preventing a recurrence after coil embolization. Computational fluid dynamics (CFD) simulations of patient-specific cerebral aneurysms are feasible and provide information on flow patterns. However, flow visualization by CFD simulations is challenging for ...
Sousa Luísa C LC Faculdade de Engenharia, Instituto de Engenharia Mecânica (IDMEC-Polo FEUP), Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal, - - 2014
The ability of using non-expensive ultrasound (US) image data together with computer fluid simulation to access various severities of carotid stenosis was inquired in this study. Subject-specific hemodynamic conditions were simulated using a developed finite element solver. Individual structured meshing of the common carotid artery (CCA) bifurcation was built from ...
Mou Yun - - 2014
Pulmonary venous aneurysm is rare and its etiology is still debated. Some studies have shown that acquired aneurysms are caused by an increase in left atrial pressure and mitral regurgitation. However, few reports have provided direct evidence of this pathology. We present a case of pulmonary venous aneurysm diagnosed using ...
Sun Zhonghua Z Discipline of Medical Imaging, Department of Imaging and Applied Physics, Curtin University, Perth, Western Australia 6845, Australia. Electronic address: - - 2014
Computational fluid dynamics (CFD) is a widely used method in mechanical engineering to solve complex problems by analysing fluid flow, heat transfer, and associated phenomena by using computer simulations. In recent years, CFD has been increasingly used in biomedical research of coronary artery disease because of its high performance hardware ...
Takahashi Shinya S Department of Cardiovascular Surgery, Hiroshima University Hospital, Hiroshima, Japan - - 2014
An 81-year-old man became semiconscious and suffered back pain followed by chest pain. Computed tomography showed retrograde acute type A aortic dissection with entries in the proximal and middle descending aorta, and an occluded true lumen of the right carotid artery. Emergency endovascular repair was performed. Immediately after deploying a ...
Pingpoh Clarence C Department of Cardiovascular Surgery Heart Center, University of Freiburg, Freiburg, Germany. Electronic address: - - 2014
A 77-year old man underwent transcatheter aortic valve implantation for severe aortic stenosis with a 29-mm Edwards-Sapien XT aortic valve bioprosthesis. Periprocedural transesophageal echocardiography and computed tomography showed good positioning and expansion of the prosthesis with only minor transvalvular insufficiency. On a routine checkup 7 months later, echocardiography and computed ...
Chan Fook-How FH Department of Neurosurgery, School of Medicine, Chung Shan Medical University Hospital; Taichung, Taiwan - - - 2014
A 34-year-old woman presented with a history of persisting headache for years, and a newly developed dizziness, left facial palsy and right hemiparesis two days prior to this admission. Initial computed tomographic angiography of the head demonstrated an area of increased density in the left middle and posterior fossae. Multiple ...
Sharma Mala M From the 1Department of Medicine, Cardiology Division, New York Medical, College/Westchester Medical Center, Valhalla, NY, and the 2Department of Medicine, Yale School of Medicine/Norwalk Hospital, Norwalk, - - 2014
Pulmonary arterial hypertension is a progressive and debilitating disorder with an associated high morbidity and mortality rate. Significant advances in our understanding of the epidemiology, pathogenesis and pathophysiology of pulmonary hypertension have occurred over the last several decades. This has allowed the development of new therapeutic options in this disease. ...
Ichikawa Naoki - - 2014
Objectives: The purpose of this study was to examine whether oral administration of an angiotensin II type 1 receptor blocker (ARB) inhibited in-stent neointimal hyperplasia in carotid arteries of hypercholesterolemic rabbits. Methods: Eleven male New Zealand white rabbits were subjected to endothelial injuries of the right common carotid arteries using ...
Kunita-Takanezawa Mutsumi M 1Departments of Cardiovascular Medicine, 2Departments of Advanced Cardiovascular Regulation and Therapeutics, 3Division of Molecular Cardiology, Research Institute of Angiocardiology, Kyushu University Graduate School of Medicine, Fukuoka, Japan 4Department of Internal Medicine, University of South Alabama, Mobile, AL, - - 2014
The efficacy of ET receptor antagonist bosentan in patients with severe pulmonary arterial hypertension remains limited, partly because its higher doses for potential blockade of ET receptors have never been tested due to liver dysfunction. We hypothesized that rigorous blockade of ET receptors using the novel dual ET receptor antagonist ...
Wang Ren-Ying RY State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension and Department of Hypertension, Ruijin Hospital, the Laboratory of Vascular Biology and Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences. Shanghai Institute of Hypertension, Shanghai JiaoTong University School of Medicine, Shanghai 200025, - - 2014
Hirulog-like-peptide (HLP) and low-molecular-weight heparin (LMWH) are thrombin inhibitor peptides. Our previous study demonstrated that hirulog-like-peptide could reduce vascular neointimal formation or restenosis in animals undergoing balloon catheter injury in carotid artery. However, the function of hirulog-like-peptide during ischemic stroke is largrly unknown. The present study investigated the effect of ...
Adeoye Olayemi O Loma Linda University School of - - 2014
Recent studies suggest that VEGF contributes to hypoxic remodeling of arterial smooth muscle, although hypoxia produces only transient increases in VEGF that return to normoxic levels despite sustained changes in arterial structure and function. To explore how VEGF might contribute to long-term hypoxic vascular remodeling, this study explores the hypothesis ...
Han Guichun G Guichun Han, Women's Health Division, Michael E DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A and M University, College Station, TX 77843, United - - 2014
Coronary heart disease (CHD) continues to be the greatest mortality risk factor in the developed world. Estrogens are recognized to have great therapeutic potential to treat CHD and other cardiovascular diseases; however, a significant array of potentially debilitating side effects continues to limit their use. Moreover, recent clinical trials have ...
Habiyakare Belthrand B Centre for Chronic Disease Prevention & Management (CCDPM), College of Health and Biomedicine, Victoria University, St Albans Campus, Melbourne, VIC, - - 2014
Novel treatments are necessary to reduce the burden of cardiovascular disease (CVD). Alamandine binds to MrgD and is reported to induce vasodilation via stimulation of endothelial nitric oxide synthase (eNOS), but its role in atherogenic blood vessels is yet to be determined. To determine the vasoactive role of alamandine and ...
Mukouyama Yoh-Suke - - 2014
Autonomic sympathetic axons extend along and innervate resistance arteries to control vascular tone and participate in blood pressure regulation. In this issue of the JCI, Brunet and colleagues reveal that sympathetic innervation of arteries is facilitated by secretion of the axon guidance molecule netrin-1 by arterial VSMCs. Furthermore, disruption of ...
Hiett S Christopher SC Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, - - 2014
The TRPV1* agonist capsaicin is considered to be beneficial for cardiovascular health because it dilates coronary arteries through an endothelial-dependent mechanism and may slow atheroma progression. However, recent reports indicate that high doses of capsaicin may constrict coronary arterioles and even provoke myocardial infarction. Thus far, the mechanisms by which ...
Haanes Kristian Agmund KA Department of Clinical Experimental Research, Glostrup Research Institute, Copenhagen University Hospital, Nordre Ringvej 59, 2600 Glostrup, Denmark. Electronic address: - - 2014
Extracellular UDP-glucose can activate the purinergic P2Y14 receptor. The aim of the present study was to examine the physiological importance of P2Y14 receptors in the vasculature. The data presented herein show that UDP-glucose causes contraction in mouse coronary and basilar arteries. The EC50 values and immunohistochemistry illustrated strongest P2Y14 receptor ...
Spikes L L University of Kansas Medical Center, Kansas City, Kansas, USA. - - 2014
Macitentan is a novel, dual endothelin receptor antagonist recently approved for the treatment of WHO Group I pulmonary arterial hypertension. Its pharmacologic mechanism of action as well as the pharmacokinetics, pharmacodynamics and potential drug-drug interactions have been demonstrated in multiple phase I and II trials. The pivotal randomized, placebo-controlled, event-driven ...
Maron Bradley A BA Brigham and Women's Hospital, Division of Cardiovascular Medicine, Boston, Massachusetts, USA ; Veterans Affairs Boston Healthcare System, Department of Cardiology, 1400 VFW Parkway, Boston, Massachusetts, - - 2014
Pulmonary arterial hypertension (PAH) is associated with aberrant pulmonary vascular remodeling that leads to increased pulmonary artery pressure, pulmonary vascular resistance, and right ventricular dysfunction. There is now accumulating evidence that the renin-angiotensin-aldosterone system is activated and contributes to cardiopulmonary remodeling that occurs in PAH. Increased plasma and lung tissue ...
Nayyar Dhruv D St. Vincent's Hospital, Sydney, Australia ; University of New South Wales, Kensington, - - 2014
Despite currently available treatments, the prognoses of pulmonary arterial hypertension (PAH) and pulmonary capillary hemangiomatosis (PCH) remain poor. Platelet-derived growth factor and its receptor (PDGFR) have been implicated in the pathogenesis of pulmonary hypertension in PAH and PCH. Imatinib, a PDGFR antagonist, may be beneficial in the treatment of both ...
Crnkovic S S Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria; Department of Experimental Anaesthesiology, Medical University of Graz, Graz, - - 2014
Pulmonary arteries exhibit innervation, however little is known about the role of neuronal axis in pulmonary hypertension (PH). Here, we focused on potential role of the neuropeptide Y (NPY) and NPY receptor Y1 (NPY1R) in PH pathogenesis. Localisation of NPY was assessed by immunofluorescence. Expression levels of NPY and NPY1R ...
Kostopoulos Christos G - - 2014
Depending on their anatomical location, different fat depots have a different capacity to produce bioactive peptides, called adipokines. Adipokines produced by periadventitial fat have been implicated in the pathogenesis of vascular disease, including atherosclerosis. Chemerin is an adipokine with an established role in immunity, adipose tissue function and metabolism, acting ...
Hill Brent J F BJ Department of Biology, University of Central Arkansas, Conway, AR, U.S.A, - - 2014
The presence of circulating plasma 17β-estradiol (E2) is beneficial in women against abnormal vascular tone development, such as coronary arterial vasospasms. Several vascular diseases have demonstrated that an increased expression of the sarcoplasmic reticulum Ca(2+) -ATPase pump (SERCA2b) serves to limit the excessive accumulation of intracellular Ca(2+) . Therefore, the ...
Yang Yang Y Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, - - 2014
Valve interstitial cells (VICs) are responsible for maintaining the structural integrity and dynamic behaviour of the valve. Telocytes (TCs), a peculiar type of interstitial cells, have been recently identified by Popescu's group in epicardium, myocardium and endocardium (visit www.telocytes.com). The presence of TCs has been identified in atria, ventricles and ...
Gençhellaç Hakan H Department of Radiology, Trakya University Faculty of Medicine, Edirne, - - 2014
It is crucial to know anatomic variations and the exact course of an inferior epigastric artery (IEA) to prevent any complications during percutaneous abdominal interventions. The aim of this study was to map the inferior epigastric vessels using reconstructed two-detector computed tomography images and measure the distance from the inferior ...
Welschoff Julia J Institute of Physiology I, University of Bonn, Bonn, - - 2014
Novel relaxants of pulmonary arteries and airways are of special interest to obtain insights into pulmonary signaling pathways and to develop treatment strategies for lung diseases. Herein, we demonstrate that Arg-Gly-Asp (RGD) peptides induce a dose-dependent relaxation of pulmonary arteries and airways in mouse. The relaxing effect was specific because ...
Chan Kayi Y KY Department of Internal Medicine, Division of Pharmacology, Erasmus Medical Centre, P.O. Box 2040, 3000 CA, Rotterdam, The - - 2014
Initial concerns about the coronary side-effect potential of the anti-migraine drug sumatriptan and second-generation triptans initiated cranioselectivity studies using proximal human coronary arteries. However, myocardial ischaemia may originate from both large and small human coronary arteries. We investigated the contractions to sumatriptan in proximal (internal diameter 2-3 mm), distal (internal diameter ...
Yao Li-Chin LC University of California, San - - 2014
Lymphatic vessels in the respiratory tract normally mature into a functional network during the neonatal period, but under some pathological conditions can grow as enlarged, dilated sacs that result in the potentially lethal condition of pulmonary lymphangiectasia. We sought to determine whether overexpression of the lymphangiogenic growth factor VEGF-C can ...
Farmer David G S DG Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary & Life Sciences, University of Glasgow, G12 8QQ. Electronic address: - - 2014
The calgranulin-like protein MTS1/S100A4 and the receptor for advanced glycation end-products (RAGE) have recently been implicated in mediating pulmonary arterial smooth muscle cell proliferation and vascular remodelling in experimental pulmonary arterial hypertension (PH). Here, the effects of RAGE antagonism upon 2 weeks of hypobaric hypoxia (10% O2)-induced PH in mice ...
Farkas Daniela D Victoria Johnson Center for Obstructive Lung Research, Department of Internal Medicine, Division of Respiratory Disease and Critical Care Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of - - 2014
Successful curative treatment of severe pulmonary arterial hypertension with luminal obliteration will require a thorough understanding of the mechanism underlying the development and progression of pulmonary vascular lesions. But the cells that obliterate the pulmonary arterial lumen in severe pulmonary arterial hypertension are incompletely characterized. The goal of our study ...
Koyama Kazuya K Division of Respiratory Medicine, Toho University School of Medicine, - - 2014
Anomalous unilateral single pulmonary vein (AUSPV), a rare congenital anomaly, is associated with an aberrant course but normal drainage, and resembles arteriovenous malformation (AVM). We treated a 26-year-old man with AUSPV in the right lung and an anomalous segmental pulmonary vein in the left lung. CT revealed a tortuous vascular ...
Yamamura Aya A School of Pharmacy, Kinjo Gakuin University, - - 2014
Pulmonary arterial hypertension (PAH) is defined as an intractable disease characterized by a progressive elevation of pulmonary vascular resistance (PVR) and pulmonary arterial pressure (PAP), leading to right heart failure and premature death. The five-year survival rate after diagnosis is approximately 57%. Although extensive research has identified some factors associated ...
Samarska Iryna V IV Department of Anesthesiology, University of Groningen, University Medical Center Groningen, The - - 2014
Cardiopulmonary bypass (CPB) may induce systemic inflammation and vascular dysfunction. Sphingosine 1-phosphate (S1P) modulates various vascular and immune responses. Here we explored whether agonists of the S1P receptors, FTY720 and SEW2871 improve vascular reactivity after CPB in the rat. Experiments were done in male Wistar rats (total nā€Š=ā€Š127). Anesthesia was ...
Cui Song S The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Department of Cardiology, Anzhen Hospital Affiliated to Capital Medical University, Beijing 100029, - - 2014
Endoglin/CD105 is an accessory protein of the transforming growth factor-β receptor system that plays a critical role in proliferation of endothelial cells and neovasculature. Here, we aimed to assess the effect of novel stents coated with antibodies to endoglin (ENDs) on coronary neointima formation. Thirty ENDs, thirty sirolimus-eluting stents (SESs), ...
Tan Yan Y Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, Colorado, United States of America; Department of Pediatrics, University of Colorado at Denver, Aurora, Colorado, United States of - - 2014
Stiffening of large arteries is increasingly used as an independent predictor of risk and therapeutic outcome for small artery dysfunction in many diseases including pulmonary hypertension. The molecular mechanisms mediating downstream vascular cell responses to large artery stiffening remain unclear. We hypothesize that high pulsatility flow, induced by large artery ...
Luo Tao T Vascular Surgery Department of Xuanwu Hospital, Institute of Vascular Surgery, Capital Medical University, Beijing, - - 2013
In the recent decades, carotid angioplasty and stenting (CAS) has been developed into a credible option for the patients with carotid stenosis. However, restenosis remains a severe and unsolved issue after CAS treatment. Restenosis is characterized by neointimal hyperplasia, which is partially caused by vascular smooth muscle cells (VSMC) proliferation. ...
Hofmann Alejandro D AD National Children's Research Centre, Our Lady's Children's Hospital, Crumlin, Dublin 12, - - 2013
The high morbidity and mortality in congenital diaphragmatic hernia (CDH) are attributed to severe pulmonary hypoplasia and persistent pulmonary hypertension (PH). PH is characterized by structural changes in pulmonary arteries, resulting in adventitial and medial thickness. These effects are triggered by abnormal apoptosis and proliferation of pulmonary vascular endothelial and ...
Corcoran Jemma J JJ Maternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester Academic Health Sciences Centre, St Marys Hospital, Manchester, M13 9WL, - - 2013
The discrete regulation of vascular tone in the human uterine and placental circulations is a key determinant of appropriate uteroplacental blood perfusion and pregnancy success. Humoral factors such as oestrogen, which increases in the placenta and maternal circulation throughout human pregnancy, may regulate these vascular beds as studies of animal ...
Channick Richard - - 2013
The development of orally active pulmonary vasodilators has been a major breakthrough in the treatment of pulmonary arterial hypertension (PAH). Orally active medications greatly enhanced patient access to PAH treatment and increased an interest in the diagnosis and treatment of this disease that still continues. Four different orally active drugs ...
McCulloch Neil Arthur - - 2013
: The use of supraphysiological doses of anabolic androgenic steroids can have serious side effects. This article reports the case of a young man who suffered potentially life-threatening arterial thromboses following the use of these drugs.
Guignabert Christophe - - 2013
Pulmonary hypertension is a devastating, life-threatening disorder with no curative options, characterized by elevated pulmonary vascular resistance and secondary right ventricular failure. Although the etiologies of pulmonary arterial hypertension are multiple and its pathogenesis is complex, there is growing evidence that inflammation, endothelial dysfunction, aberrant vascular wall cell proliferation, as ...
Jelinic Maria - - 2013
Relaxin is a potent vasodilator of small resistance arteries and modifies arterial compliance in some systemic vascular beds, yet receptors for relaxin, such as RXFP1, have only been localized to vascular smooth muscle. This study first aimed to localize RXFP1 in rat arteries and veins from different organ beds and ...
Kleinbongard Petra - - 2013
The mouse is a quickly reproducing, inexpensive animal and often used for transgenic approaches. Due to its small size, only the aorta is frequently taken to assess vascular function. However, atherosclerosis is a generalized disease and becomes symptomatic when the perfusion of specific organs is impaired. We have therefore compared ...
Kobayashi Naho - - 2013
We previously demonstrated that Porphyromonas gingivalis infection induces neointimal hyperplasia with an increase in monocyte chemoattractant protein (MCP)-1 after arterial injury in wild-type mice. Toll-like receptor (TLR) 2 is a key receptor for the virulence factors of P. gingivalis. The aim of this study was to assess whether TLR2 plays ...
Seferian Andrei - - 2013
Pulmonary arterial hypertension (PAH) is a progressive disease characterised by remodelling of small pulmonary arteries leading to an increased pulmonary vascular resistance, right ventricular failure and death. Available treatments try to re-establish the equilibrium on three signalling pathways: the prostacyclin, the endothelin (ET)-1 and the nitric oxide. Prostanoids, such as ...
Vila José M - - 2013
Aims In the present study we investigated the intervention of nitric oxide and prostacyclin in the responses to vasopressin of isolated thyroid arteries obtained from multi-organ donors. Main methods Paired artery rings from glandular branches of the superior thyroid artery, one normal and the other deendothelized, were mounted in organ ...
Sikarwar Anurag Singh - - 2013
Pulmonary arterial vasoconstriction is a hallmark of persistent pulmonary hypertension of the newborn (PPHN). We reported increased calcium responses to thromboxane, and selectively increased thromboxane receptor (TP) association with Gαq, in hypoxic pulmonary artery. Palmitoylation of Gαq is important for efficient receptor-Gαq-phospholipase-C interactions. TPα receptor is not itself amenable to ...
Lubrano Valter - - 2013
The development of atherosclerosis is caused by the accumulation of lipid, inflammatory cytokine production, and the large amount of inflammatory cells in the arterial wall. It is now established that the presence of oxidized low-density lipoproteins (ox-LDL) has an important role in the pathogenesis of the disease. There are many ...
Kleinbongard Petra - - 2013
Stent implantation into atherosclerotic coronary arteries releases particulate debris and soluble substances which contribute to impaired microvascular perfusion. Here we addressed the potential for microvascular obstruction in patients with stenotic native right coronary arteries (nRCA) as compared to saphenous vein grafts on right coronary arteries (SVG-RCA). We enrolled symptomatic, male ...
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