Search Results
Results 101 - 150 of 996
1 2 3 4 5 6 7 8 9 10 >
Buys Emmanuel E aAnesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital bDivision of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, - - 2014
Nitric oxide (NO)-soluble guanylate cyclase (sGC)-dependent signaling mechanisms have a profound effect on the regulation of blood pressure (BP). In this review, we will discuss recent findings in the field that support the importance of sGC in the development of hypertension. The importance of sGC in BP regulation was highlighted ...
Hu Weitong W Research Institute of Cardiovascular Diseases and Department of Cardiology, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of - - 2014
To evaluate whether inter-arm diastolic blood pressure difference (DBPl-r) induced by one arm ischemia correlates with flow-mediated dilatation (FMD). Bilateral arm BPs were simultaneously measured with two automatic devices and right brachial artery diameter (D) was measured by ultrasound technique in 108 subjects (56 hypertensives and 52 normotensives). Following baseline ...
Osei-Owusu Patrick P Drexel University College of - - 2014
Elastin (Eln) insufficiency in mice and humans is associated with hypertension and altered structure and mechanical properties of large arteries. However, it is not known to what extent functional or structural changes in resistance arteries contribute to the elevated blood pressure characteristic of elastin insufficiency. Here we investigate how elastin ...
Heinze Christoph - - 2014
High blood pressure is the leading risk factor for death worldwide. One of the hallmarks is a rise of peripheral vascular resistance, which largely depends on arteriole tone. Ca2+-activated chloride currents (CaCCs) in vascular smooth muscle cells (VSMCs) are candidates for increasing vascular contractility. We analyzed the vascular tree and ...
Uys A S AS Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South - - 2014
Chronically elevated blood pressure has been associated with impaired NO-mediated vasodilation and structural vascular disease risk. This study aimed to determine whether significant associations exist regarding NO metabolite (NOx) responses, cardiovascular function and structural vascular disease in a cohort of African and Caucasian men. The study included 81 African and ...
Hodgson Jonathan M JM School of Medicine and Pharmacology, University of Western Australia, GPO Box X2213 Perth, Western Australia 6847, Australia. Electronic address: - - 2014
Characteristics of short-term blood pressure (BP) variation may influence cardiovascular disease risk via effects on vascular function. In a cross-sectional study of a group of treated hypertensive and untreated largely normotensive subjects we investigated the relationships of measures of short-term BP variation with brachial artery vasodilator function. A total of ...
Schutte A E AE Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa. Electronic address: - - 2014
Insulin-like growth factor-1 (IGF-1) has potent endothelial-protective, anti-platelet and anti-thrombotic activities, and also exerts mitogenic and proliferatory actions on vascular smooth muscle cells. Conflicting reports exist regarding the role of IGF-1 in vascular protection and atherogenesis. We therefore investigated the relationships of ambulatory blood pressure (BP) and carotid intima-media thickness ...
Hernanz Raquel - - 2014
Elevated production of prostanoids from the constitutive (COX-1) or inducible (COX-2) cyclo-oxygenases has been involved in the alterations in vascular function, structure and mechanical properties observed in cardiovascular diseases, including hypertension. In addition, it is well known that production of ROS (reactive oxygen species) plays an important role in the ...
Chattopadhyay Saurabh S Department of Molecular Genetics, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of - - 2014
Angiotensin-converting enzyme (ACE) regulates normal blood pressure and fluid homeostasis through its action in the renin-angiotensin-system (RAS). Ace-/- mice are smaller in size, have low blood pressure and defective kidney structure and functions. All of these defects are cured by transgenic expression of somatic ACE (sACE) in vascular endothelial cells ...
Karaca Mustafa M Department of Internal Medicine, Akdeniz University Faculty of Medicine, Antalya, - - 2014
Background Endothelial dysfunction, which is characterized by an imbalance between relaxing and contracting factors, procoagulant and anticoagulant substances, and between pro-inflammatory mediators, may play a particularly significant role in the pathogenesis of atherosclerosis. Numerous experimental and clinical reports suggest that a high von Willebrand factor (vWF) level reflects endothelial damage ...
Vanbavel Ed E Department of Biomedical Engineering and Physics, Academic Medical Center, Amsterdam, The - - 2014
Organ perfusion is regulated by vasoactivity and structural adaptation of small arteries and arterioles. These resistance vessels are sensitive to pressure, flow and a range of vasoactive stimuli. Several strongly interacting control loops exist. As an example, the myogenic response to a change of pressure influences the endothelial shear stress, ...
Al-Qubati Yasin Y Dermatology, Taiz University School of Medicine, Taiz, Yemen and Dermatology and Pediatrics, Rutgers University New Jersey Medical School, Newark, New Jersey, - - 2014
Pyogenic granuloma (PG) is a benign vascular neoplasm most often evident as a rapidly developing solitary, sessile, or polypoid vascular nodule or tumor prone to ulceration or hemorrhage. Bleeding may be episodic, copious, and refractory to pressure, mandating treatment, particularly when on the lip. We describe a 14-year-old adolescent with ...
Mehlsen Jesper J Coordinating Research Centre, Frederiksberg Hospital, Nordre Fasanvej 57, 2000 Frederiksberg, Denmark ; Department of Clinical Physiology and Nuclear Medicine, Frederiksberg Hospital, Nordre Fasanvej 57, 2000 Frederiksberg, - - 2014
The present study aimed at examining the interarm difference in blood pressure and its use as an indicator of peripheral arterial disease (PAD). Data were included from consecutive patients referred from their general practitioner to our vascular laboratory for possible PAD aged 50 years or older without known cardiac disease, ...
Gomez-Marcos Manuel A MA Instituto de Investigación Biomédica de Salamanca (IBSAL). Primary Care Research Unit, La Alamedilla Health Center, Castilla and León Health Service-SACYL, Salamanca, - - 2014
Target organ damage (TOD) is associated with increased cardiovascular risk. The study objectives were to analyse the relationship of TOD to blood pressure, size of retinal arteries and veins, oxidative stress and different polymorphisms in the VAV-2 and VAV-3 genes in participants with hypertension. A case-control study to analyse the ...
Azushima Kengo K Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, - - 2014
Both strict blood pressure (BP) control and improvements in BP profile such as BP variability are important for suppression of renal deterioration and cardiovascular complication in hypertension and chronic kidney disease (CKD). In the present study, we examined the beneficial effects of the single pill-based combination therapy of amlodipine and ...
Nishijima Yoshinori Y Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin ; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, - - 2014
Transient receptor potential vanilloid type 4 (TRPV4) is an endothelial Ca(2+) entry channel contributing to endothelium-mediated dilation in conduit and resistance arteries. We investigated the role of TRPV4 in the regulation of blood pressure and endothelial function under hypertensive conditions. TRPV4-deficient (TRPV4(-/-)) and wild-type (WT) control mice were given l-NAME ...
Zhanatbekova A K - - 2014
Arterial hypertensionis an important worldwide health problem. Its relevance relatesboth to the high incidence and prevalence in all adult communities and to the high risk of serious and potentially fatal cardiovascular events dueto hypertension. Resistant hypertension is defined as a blood pressure (BP) remaining above goal (>140/90 mm Hg) despite ...
Paciaroni Maurizio M Stroke Unit and Division of Cardiovascular Medicine, University of Perugia, Santa Maria della Misericordia Hospital, Sant'Andrea delle Fratte, 06126 - Perugia, Italy. - - 2014
Secondary prevention of atherosclerotic stroke and transient ischemic attack includes both conventional approaches to vascular risk factor management (blood pressure lowering, cholesterol reduction with statins and smoking cessation), antiplatelet therapy and more specific interventions, such as carotid revascularization. The objective of this review is to discuss effective interventions for optimal ...
Cheng Jiu-Hua JH Department of Aerospace Physiology and Key Laboratory of Aerospace Medicine of Ministry of Education, Fourth Military Medical University, Xi'an, - - 2014
To elucidate further from the biomechanical aspect whether microgravity-induced cerebral vascular mal-adaptation might be a contributing factor to postflight orthostatic intolerance and the underlying mechanism accounting for the potential effectiveness of intermittent artificial gravity (IAG) in preventing this adverse effect. Middle cerebral arteries (MCAs) were isolated from 28-day SUS (tail-suspended, ...
Gonzales Albert L AL Vascular Physiology Research Group, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA. Department of Pharmacology, University of Vermont, Burlington, VT 05405, - - 2014
Maintaining constant blood flow in the face of fluctuations in blood pressure is a critical autoregulatory feature of cerebral arteries. An increase in pressure within the artery lumen causes the vessel to constrict through depolarization and contraction of the encircling smooth muscle cells. This pressure-sensing mechanism involves activation of two ...
Mahara Atsushi A 0000-0002-4075-6019 Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Fujishiro-dai, Suita, Osaka 565-8565, - - 2014
Pressure treatment has been developed in tissue engineering application. Although the tissue scaffold prepared by a ultrahydrostatic pressure treatment has been reported, an excessive pressure has a potential to disrupt a structure of extracellular matrix through protein denaturation. It is important to understand the suitable low-pressure condition and mechanisms for ...
Zimmerman Deborah L DL Associate Professor of Medicine, Division of Nephrology, Ottawa Hospital, Kidney Research Centre of the Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, - - 2014
Treatment of end stage renal disease patients with short daily hemodialysis has been associated with an improvement in blood pressure. It is unclear from these studies if anti-hypertensive management had been optimized prior to starting short daily hemodialysis. Also, the potential mechanism(s) of blood pressure improvement remain to be fully ...
Xiao DaLiao D Center for Perinatal Biology, Division of Pharmacology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, United States of - - 2014
In utero exposure to adverse environmental factors increases the risk of cardiovascular disease in adulthood. The present study tested the hypothesis that antenatal hypoxia causes a gender-dependent programming of altered arterial blood pressure response (BP) in adult offspring. Time-dated pregnant rats were divided into normoxic and hypoxic (10.5% O2 from ...
André Gwennan G Inserm UMR_S1087, CNRS UMR_C6291, l'institut du thorax, Nantes, F-44000, France (G.A., J.E.S., G.T., M.R.D., G.L., V.S.) Université de Nantes, Nantes, F-44000, France (G.A., J.E.S., G.T., M.R.D., G.L., - - 2014
Increasing evidence implicates overactivation of RhoA as a critical component of the pathogenesis of hypertension. Although a substantial body of work has established that Rac1 functions antagonize RhoA in a broad range of physiological processes, the role of Rac1 in the regulation of vascular tone and blood pressure is not ...
Santos Priscila Portugal Dos PP Department of Internal Medicine, Botucatu Medical School, UNESP - Universidade Estadual Paulista, Botucatu, São Paulo, - - 2014
The aim of this study was to evaluate whether supplementation of high doses of cholecalciferol for two months in normotensive rats results in increased systolic arterial pressure and which are the mechanisms involved. Specifically, this study assesses the potential effect on cardiac output as well as the changes in aortic ...
Rapoport Robert M RM Research Service, Department of Pharmacology and Cell Biophysics, Veterans Affairs Medical Center, University of Cincinnati College of Medicine Cincinnati, OH, - - 2014
Key evidence that endogenous nitric oxide (NO) inhibits the continuous, endothelin (ET)-1-mediated drive to elevate arterial pressure includes demonstrations that ET-1 mediates a significant component of the pressure elevated by acute exposure to NO synthase (NOS) inhibitors. This review examines the characteristics of this pressure elevation in order to elucidate ...
Timm Richard W RW Ethicon Inc., Cincinnati, OH, - - 2014
Ultrasonic energy is a mainstay in the armamentarium of surgeons, providing multifunctionality, precision, and control when dissecting and sealing vessels up to 5 mm in diameter. Historically, the inability to seal vessels in the 5-7 mm range has been perceived as an inherent limitation of ultrasonic technology. The purpose of ...
Dinh Quynh N QN Vascular Biology & Immunopharmacology Group, Department of Pharmacology, Monash University, Wellington Road, Clayton, VIC 3800, - - 2014
Hypertension is a complex condition and is the most common cardiovascular risk factor, contributing to widespread morbidity and mortality. Approximately 90% of hypertension cases are classified as essential hypertension, where the precise cause is unknown. Hypertension is associated with inflammation; however, whether inflammation is a cause or effect of hypertension ...
Carrillo-Sepulveda Maria Alicia MA Department of Pharmacology and Roy J. and A. Lucille Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of - - 2014
Peroxisome proliferator activated receptor γ (PPARγ) has been reported to play a protective role in the vasculature; however, the underlying mechanisms involved are not entirely known. We previously showed that vascular smooth muscle-specific overexpression of a dominant negative human PPARγ mutation in mice (S-P467L) leads to enhanced myogenic tone and ...
Kim GeeHee G Division of Cardiology, Department of Internal Medicine, St Vincent's Hospital, Catholic University of Korea, Suwon, Republic of - - 2014
Arterial stiffness, as assessed by the brachial-ankle pulse wave velocity (baPWV), is associated with arterial aging and has been consistently linked to cardiovascular disease. The factors involved in reducing the progression of arterial stiffness in patients with type 2 diabetes mellitus (DM) have not yet been fully established. Of 478 ...
De Ciuceis Carolina C aClinica Medica, Department of Clinical and Experimental Sciences bChair of Ophthalmology cChair of Clinical Biochemistry, University of Brescia, - - 2013
It has been previously demonstrated that dihydropyridine calcium channel blockers may possess antioxidant properties and might improve vascular structure. Combination treatment with an angiotensin-converting enzyme inhibitor may have additional advantages, compared with a thiazide diuretic, in this regard. The aim of the present study was, therefore, to investigate the effects ...
Rimoldi Stefano F SF Department of Cardiology, Inselspital, University Hospital, Bern, - - 2013
Secondary hypertension refers to arterial hypertension due to an identifiable cause and affects ∼5-10% of the general hypertensive population. Because secondary forms are rare and work up is time-consuming and expensive, only patients with clinical suspicion should be screened. In recent years, some new aspects gained importance regarding this screening. ...
Kaye Alan D AD Departments of 1Anesthesiology, and 2Pharmacology, LSU School of Medicine, Louisiana State University Health Science Center, New Orleans, LA; and 3Stanford University, Palo Alto, - - 2013
Defibrotide is a polydisperse mixture of single-stranded oligonucleotides with many pharmacologic properties and multiple actions on the vascular endothelium. Responses to defibrotide and other vasodepressor agents were evaluated in the pulmonary vascular bed of the cat under conditions of controlled pulmonary blood flow and constant left atrial pressure. Lobar arterial ...
Skinner M M AstraZeneca R&D, Alderley Park, Macclesfield, SK10 4TG, - - 2013
Fostamatinib is a kinase inhibitor with activity at spleen tyrosine kinase. In clinical studies in patients with rheumatoid arthritis, fostamatinib treatment was associated with an increase in blood pressure. Some tyrosine kinase inhibitors are known to cause blood pressure elevation, potentially by inhibiting vascular endothelial growth factor receptor 2 (VEGFR2). ...
Biancardi Vinicia Campana VC Department of Physiology, Georgia Regents University, 1120 15th Street, Augusta, GA 30912. - - 2014
Angiotensin II-mediated vascular brain inflammation emerged as a novel pathophysiological mechanism in neurogenic hypertension. However, the precise underlying mechanisms and functional consequences in relation to blood-brain barrier (BBB) integrity and central angiotensin II actions mediating neurohumoral activation in hypertension are poorly understood. Here, we aimed to determine whether BBB permeability ...
Bai Xue X Department of Pathology and Lab Medicine, University of North Carolina, 501 Brinkhous-Bullitt Building CB 7525, Chapel Hill, North Carolina 27599, - - 2013
Although hypertension is a worldwide health issue, an incomplete understanding of its aetiology has hindered our ability to treat this complex disease. Here we identify arhgap42 (also known as GRAF3) as a Rho-specific GAP expressed specifically in smooth muscle cells (SMCs) in mice and humans. We show that GRAF3-deficient mice ...
Lee Wen-Hsien - - 2013
Patients with chronic kidney disease (CKD) often have poor vascular compliance and poor left ventricular diastolic dysfunction (LVDD). The pulse pressure index (PPI) defined as ((systolic blood pressure - diastolic blood pressure)/systolic blood pressure) reflects vascular compliance. Vascular compliance is reportedly associated with left ventricular diastolic function. This study of ...
Eiken Ola - - 2013
Recent studies are reviewed, concerning the in vivo wall stiffness of arteries and arterioles in healthy humans, and how these properties adapt to iterative increments or sustained reductions in local intravascular pressure. A novel technique was used, by which arterial and arteriolar stiffness was determined as changes in arterial diameter ...
Crestani Sandra - - 2013
A high salt diet is associated with reduced activity of the renin-angiotensin-aldosterone system (RAAS). However, normotensive rats exposed to high sodium do not show changes in systemic arterial pressure. We hypothesized that, despite the reduced circulating amounts of angiotensin II induced by a high salt diet, the cardiovascular system's reactivity ...
Calò Lorenzo A - - 2013
Injury of vascular endothelium, crucial in vascular disease, is repaired via circulating endothelial progenitor cells (cEPCs). In hypertension, cEPCs number is reduced and function impaired adding further risk for cardiovascular (CV) events. Angiotensin II (Ang II)-induced oxidative stress (OxSt), accelerates cEPCs senescence. Calcitonin gene-related peptide (CGRP), able to prevent and ...
Hyde Eoin R - - 2013
A method to extract myocardial coronary permeabilities appropriate to parameterise a continuum porous perfusion model using the underlying anatomical vascular network is developed. Canine and porcine whole-heart discrete arterial models were extracted from high-resolution cryomicrotome vessel image stacks. Five parameterisation methods were considered that are primarily distinguished by the level ...
Sollinger Daniel - - 2013
Recent publications have shed new light on the role of the adaptive and the innate immune system in the pathogenesis of hypertension. However there are limited data whether receptors of the innate immune system may influence blood pressure. Toll-like receptor 4, a pattern recognition receptor, is a key component of ...
Yoda Koichiro - - 2013
ObjectiveMorning blood pressure surge (MBPS) is an independent predictor of cardiovascular events. However, little is known on the association between glycemic control and MBPS and its effect on vascular injury in patients with type 2 diabetes mellitus (T2DM). The present study examined the association between glycemic control and MBPS and ...
Silveira Edna Aparecida - - 2013
Chronic lead exposure induces hypertension affecting endothelial function. We investigated whether small concentration lead exposure alters blood pressure and vascular reactivity focusing on the role of NO, oxidative stress, cyclooxygenase-derived vasoconstrictor prostanoids and the local angiotensin renin system. Aortic rings from 3-month old Wistar rats were treated daily with lead ...
Ghiadoni Lorenzo - - 2013
Endothelial dysfunction and arterial stiffness are early vascular alterations, linked to oxidative stress and inflammation, with prognostic significance in essential hypertensive patients. P2X7 receptors (P2X7R), responding to extracellular ATP, are encoded by a highly polymorphic gene and modulate inflammatory responses and cell growth, potentially playing a role in the control ...
Stea Francesco - - 2013
Arterial stiffening has harmful effects; peripheral pulse wave reflections deleteriously increase central pressure, but on the contrary they could also possibly be protective, as the pulse is transmitted to the microcirculation to a lesser extent. The aim of this study was, therefore, to explore the relationship between wave reflection and ...
Prasad Kailash K Department of Physiology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, - - 2013
Secoisolariciresionol diglucoside (SDG) is a plant lignan isolated from flaxseed and is phytoestrogen. SDG is a potent and long-acting hypotensive agent. Plant phytoestrogens have inhibitory effects on angiotensin-converting enzyme (ACE). The hypotensive effects of SDG, a phytoestrogen, may be mediated through inhibition of ACE. The objective of this study was ...
Sabbatini A R - - 2013
Resistant hypertension (RHTN) includes patients with controlled blood pressure (BP) (CRHTN) and uncontrolled BP (UCRHTN). In fact, RHTN patients are more likely to have target organ damage (TOD), and resistin, leptin and adiponectin may affect BP control in these subjects. We assessed the relationship between adipokines levels and arterial stiffness, ...
Kontaraki J E - - 2013
Vascular smooth muscle cell (VSMC) phenotypic plasticity has a critical role in the pathophysiology of arterial remodeling in essential hypertension. MicroRNAs are emerging as potential biomarkers and therapeutic targets in cardiovascular disease. We assessed the expression levels of the microRNAs miR-143, miR-145, miR-21, miR-133 and miR-1, which are implicated in ...
Ferrario Carlos M - - 2013
Knowledge of hemodynamic factors accounting for the development of hypertension should help to tailor therapeutic approaches and improve blood pressure control. Few data exist regarding sex differences of hemodynamic factors contributing to hypertension progression among patients with untreated nondiabetic stage I and II prehypertension (PreHyp) as defined by the Joint ...
1 2 3 4 5 6 7 8 9 10 >