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Results 351 - 400 of 852
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Ahlstrand R - - 2011
Cricoid pressure has been shown to decrease the pressure in the lower esophageal sphincter (LES), increasing the risk of aspiration. Whether this reaction is due to pain associated with the application of cricoid pressure has not been studied. The aim of this study was to compare the effects of cricoid ...
Guimarães Guilherme Veiga - - 2011
The heart failure (HF) syndrome can be defined as the final pathway of any type of heart disease. The sympatho-inhibitory cardiovascular reflexes, such as the arterial baroreceptor reflex, are significantly decreased in HF. Patients with HF present higher ventilation for a certain workload when compared with normal individuals. This fact ...
Chen Lee Chuin - - 2011
High pressure electrospray ionization mass spectrometry has been performed by pressurizing a custom made ion source chamber with compressed air to a pressure higher than the atmospheric pressure. The ion source was coupled to a commercial time-of-flight mass spectrometer using a nozzle-skimmer arrangement. The onset voltage for the electrospray of ...
Kalns John - - 2011
Extremity compartment syndrome (ECS) is diagnosed when the pressure within a muscle compartment increases to within 45 mmHg of mean arterial pressure. Increased pressure limits perfusion and eventually produces tissue necrosis. This can result in disability or loss of the affected limb. Hypobaric pressure during aeromedical evacuation (AE) has been ...
Shon In-Jin - - 2011
A dense nanostructured TiC with a relative density of up to 98% was produced with simultaneous application of 80 MPa pressure and pulsed current of 2800 A using the nanopowder of TiC. The effect of the ball milling times on the sintering behavior, grain size and mechanical properties of binderless ...
Kono Yoshio - - 2011
Combined ultrasonic and microtomographic measurements were conducted for simultaneous determination of elastic property and density of noncrystalline materials at high pressures. A Paris-Edinburgh anvil cell was placed in a rotation apparatus, which enabled us to take a series of x-ray radiography images under pressure over a 180° angle range and ...
Morard G - - 2011
A high efficiency multichannel collimator (MCC) device has been developed at the high pressure beamline ID27 of the European Synchrotron Radiation Facility to drastically reduce the x-ray background from the sample environment in the Paris-Edinburgh press. The main technical difficulty, which resides in the minimum slits size achievable using the ...
Habib Syed Shahid - - 2011
To see the levels of fractional exhaled nitric oxide (FENO) in young adult smokers and its relationship with duration and dose of smoking. This study was conducted at the department of Physiology of College of Medicine and King Khalid University Hospital, Riyadh, Saudi Arabia from January 2009 to June 2009. ...
Boshra Vivian - - 2011
Certain nonsteroidal anti-inflammatory drugs have been reported to elevate blood pressure in some hypertensive patients, who are either untreated or treated with antihypertensive agents. This study was undertaken to determine the effect of a selective cyclooxygenase-2 (COX-2) inhibitor, celecoxib, on the antihypertensive effects of the angiotensin II type 1 receptor ...
Decroos Francis Char - - 2011
Purpose: Long-term intraocular pressure reduction by glaucoma drainage devices (GDDs) is often limited by the fibrotic capsule that forms around them. Prior work demonstrates that modifying a GDD with a porous membrane promotes a vascularized and more permeable capsule. This work examines the in vitro fluid dynamics of the Ahmed ...
Yoshida Naohisa - - 2011
Background and Aim:  Endoscopic mucosal resection (EMR) is the standard procedure for colorectal tumors. High mucosal elevation by submucosal injection is important for definite en bloc resection and the prevention of perforation. Hyaluronic acid (HA) is a reportedly useful injection solution for high and long-lasting mucosal elevation, but the ideal ...
Chan See Ching - - 2011
The middle hepatic vein may be included in right liver living donor liver transplantation (LDLT) to optimize hepatic venous outflow. We studied the graft's ability to relieve portal hypertension and accommodate portal hyperperfusion with portal manometry and ultrasonic flowmetry. Surgical outcomes with respect to portal hemodynamometry were also investigated. The ...
Zhang Chao-Xue - - 2011
Objectives-Free portal pressure measurement is a reliable method for assessment of portal pressure in patients with cirrhosis. Intrahepatic circulatory time analysis of a sonographic contrast agent can assess liver fibrosis and its severity. The purposes of this pilot study were to assess the correlation between the intrahepatic circulatory time and ...
Nanba Kazutaka - - 2011
Malignant-phase hypertension is characterized clinically by severe accelerating hypertension with neuroretinopathy or papilledema and by evidence of renal damage. A Japanese male in his early thirties presented with hemoptysis and general fatigue. He had a 5-year history of hypertension, but had not received any treatment. His blood pressure was 290/150 mmHg ...
Jeworrek Christoph - - 2011
The design of a high pressure (HP) cell for neutron reflectivity experiments is described. The cell can be used to study solid-liquid interfaces under pressures up to 2500 bar (250 MPa). The sample interface is based on a thick silicon block with an area of about 14 cm(2). This area ...
Becher Ulrich M - - 2011
The renin-angiotensin-aldosterone system (RAAS) is part of the blood pressure regulating system. Its main effector peptide is angiotensin II (Ang II). Although it may induce hypertension, the proinflammatory, profibrotic, and prothrombotic effects are mainly mediated by effects of Ang II on the cellular and molecular level that are independent of ...
Hill Richard - - 2011
Type 4 choledochal malformations (CMs) may be defined as those with both intrahepatic and extrahepatic bile duct dilatation. The aims of this study were to investigate possible causes of intrahepatic duct (IHD) dilatation in CM and to define the effect of surgery over time. This study was a single-center retrospective ...
Brandon Amanda E - - 2011
1. The aim of the present study was to test the hypothesis that the renin response to mechanisms activated by haemorrhage is programmed by exposure to maternal renal dysfunction. 2. In 26-27-day-old lambs born to ewes that had reduced renal function (STNxL, n = 10) and lambs born to ewes with normal ...
Kreuzer Martin - - 2011
We describe an apparatus for measuring scattering length density and structure of molecular layers at planar solid-liquid interfaces under high hydrostatic pressure conditions. The device is designed for in situ characterizations utilizing neutron reflectometry in the pressure range 0.1-100 MPa at temperatures between 5 and 60 °C. The pressure cell is ...
Murri Mora - - 2011
Sleep apnea-hypopnea syndrome (SAHS) is characterized by recurrent episodes of hypoxia/reoxygenation, which seems to promote oxidative stress. SAHS patients experience increases in hypertension, obesity and insulin resistance (IR). The purpose was to evaluate in SAHS patients the effects of 1 month of treatment with continuous positive airway pressure (CPAP) on oxidative ...
Yanovski Alexander - - 2011
The study investigated the clinical significance of relatively high blood pressure (BP) elevations during the calibration of the ambulatory blood pressure monitor (ABPM). Inferences were drawn from the analysis of differences between 'M', the average of five manually triggered responses, and 'W', the average daytime BP. M-W differences were calculated ...
Bailey Matthew A - - 2011
Salt sensitivity of blood pressure is an independent risk factor for cardiovascular morbidity. Mechanistically, abnormal mineralocorticoid action and subclinical renal impairment may blunt the natriuretic response to high sodium intake, causing blood pressure to rise. 11β-Hydroxysteroid dehydrogenase type 2 (11βHSD2) controls ligand access to the mineralocorticoid receptor, and ablation of ...
Zhou J-S - - 2011
The temperature-pressure phase diagram for both the crystal and magnetic structures of LaCrO_{3} perovskite has been mapped out by in situ neutron-diffraction experiments under pressure. The system offers the opportunity to study the evolution of magnetic order, spin direction, and magnetic moment on crossing the orthorhombic-rhombohedral phase boundary. Moreover, a microscopic ...
Blood Arlin B AB Department of Pediatrics, Division of Neonatology, Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA, USA. - - 2011
Nitrite can be converted to nitric oxide (NO) by a number of different biochemical pathways. In newborn lambs, an aerosol of inhaled nitrite has been found to reduce pulmonary blood pressure, possibly acting via conversion to NO by reaction with intraerythrocytic deoxyhemoglobin. If so, the vasodilating effects of nitrite would ...
Min David K - - 2011
Investigating the localization of gastric sensation within the brain is important for understanding the neural correlates of satiety. Previous rodent studies have identified the brain-stem and hypothalamus as key mediators of gastric distention-induced satiation. Although, recent blood oxygen level dependent functional magnetic resonance imaging (BOLD fMRI) studies in humans have ...
Allison Beth - - 2011
A series of in vivo experiments were conducted to compare the hemodynamic actions of vernakalant (a novel, relatively atrial selective, antiarrhythmic drug) to flecainide following infusion into the peripheral vasculature. Anesthetized rats were surgically prepared to have an extracorporeal perfusion circuit whereby blood in the abdominal aorta (distal to the ...
Tschauner O - - 2011
We show that, in addition to the known monohydrate, LiOH forms a dihydrate at elevated pressure. The dihydrate involves a large number of H-bonds establishing chains along the ⟨001⟩ direction. In addition, the energy surface exhibits a saddle point for proton locations along certain O interatomic distances, a feature characteristic ...
Pal Sebely - - 2011
Previous evidence indicates that chronic consumption of dairy whey proteins has beneficial effects on CVD risk factors. The present study investigated the postprandial effects of whey protein isolate on blood pressure, vascular function and inflammatory markers in overweight and obese postmenopausal women. This was a randomised, three-way cross-over design study ...
Jiang Jyh-Chiang - - 2011
Using high-pressure infrared methods, we have investigated close interactions of charge-enhanced C-H-O type in ionic liquid∕dimethyl sulfoxide (DMSO) mixtures. The solvation and association of the 1-butyl-3-methylimidazolium tetrafluoroborate (BMI(+)BF(4) (-)) and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate (BMM(+)BF(4) (-)) in DMSO-d(6) were examined by analysis of C-H spectral features. Based on our concentration-dependent results, the ...
Qing Ma - - 2011
OBJECTIVE: Higher mean arterial pressure during cardiopulmonary bypass may improve cerebral outcome associated with cerebral air embolism by increasing emboli clearance and collateral flow to salvage the ischemic penumbra. However, this may come at the expense of increased delivery of embolic load. This study was designed to investigate the influence ...
Wojnarowska Z - - 2011
Broadband dielectric spectroscopy was employed to investigate the relaxation dynamics of supercooled and glassy nonivamide-the synthetic form of capsaicin being the most spicy-hot substance known to man. The material is of great importance in the pharmaceutical industry because it has wide usage in the medical field for relief of pain, ...
Sharifi Soheil - - 2011
Dielectric spectroscopy as a function of temperature and pressure was used to study the secondary relaxation in poly [(phenyl glycidyl ether)-co-formaldehyde] at hydrostatic pressure up to 600 MPa and at different temperatures between 315 and 243 K. From the analysis of the isothermal measurements, we observe that the activation volume ...
Olivier S A - - 2011
The inactivation of spores of four low-acid food spoilage organisms by high pressure thermal (HPT) and thermal-only processing was compared on the basis of equivalent thermal lethality calculated at a reference temperature of 121.1°C (F(z)(121.1)(°)(C, 0.1 MPa or 600 MPa)) and characterized as synergistic, not different or protective. In addition, ...
Hozawa Atsushi - - 2011
Abstract Previous studies have suggested that outside temperature affects blood pressure (BP) levels. However, recently, due to a spreading heating system, the seasonal variation in BP levels might be smaller, especially in colder seasons when more heat is used. We used continuous measurements of home BP data to track seasonal ...
Shi Lanchun - - 2011
Past decades have brought great advances in understanding the relationship between turgor pressure and plant cell growth. New studies have provided evidence that turgor pressure acts as a stimulus for cell growth, and is also a developmental cue for post-embryonic organogenesis. However, the subcellular mechanisms underlying plant cell turgor pressure ...
Silva Aura - - 2011
Propofol total intravenous anesthesia should provide stability of the cardiovascular system. In this study, mean arterial pressure and heart rate were evaluated in eight healthy dogs anesthetized with increasing rates of propofol. The cerebral state index (CSI) was studied as an additional parameter. Although the estimated propofol plasma concentration reached ...
Mohsenin Vahid - - 2011
INTRODUCTION: Obstructive sleep apnea (OSA) causes endothelial dysfunction and is an independent risk factor for hypertension and cardiovascular diseases. Although vasoactive agents and sympathoexcitation have been implicated and operational in the pathogenesis of hypertension associated with OSA the exact mechanisms underlying hypertension have not been established. Soluble fms-like tyrosine kinase-1 (sFlt-1) ...
Toba Hiroe - - 2011
Cilnidipine, an N/L-type calcium channel blocker, has been reported to inhibit sympathetic nerve activity and has a greater renoprotective effect than L-type calcium channel blockers. To investigate the hypothesis that cilnidipine might ameliorate advanced hypertensive nephropathy and inhibit the renal renin-angiotensin-aldosterone system, cilnidipine (1 mg per kg per day) or amlodipine ...
Cheung B M Y - - 2011
Inflammation contributes to the development of hypertension. Whether C-reactive protein (CRP) has a causal role in hypertension remains unknown. We studied the relationship between circulating CRP levels and hypertension. The role of single-nucleotide polymorphisms (SNPs) in the CRP gene as determinants of its plasma levels and the propensity to develop ...
Klingenberg Claus - - 2011
Background: Some national resuscitation guidelines advocate using sustained initial inflations (2-3 s) for babies requiring resuscitation. Inflation times ≥10 s have been used for preterm infants. Objectives: This study examines the ability of operators of varying experience to provide a sustained inflation using three different manual ventilation devices. Methods: We ...
Derzsi Mariana - - 2011
We demonstrate that DFT calculations performed with the local density approximation (LDA) allow for significantly better reproduction of lattice constants, the unit cell volume and the density of Ag(II)SO(4) than those done with generalized gradient approximation (GGA). The LDA+U scheme, which accounts for electronic correlation effects, enables the accurate prediction ...
Li Yun - - 2011
To valuate whether angiotensin converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism and aldosterone synthase (CYP11B2) gene -344T/C polymorphism are associated with individual response to hydrochlorothiazide (HCTZ) in the Han Chinese population with essential hypertension. We enrolled 829 mild/moderate hypertensive patients and 12.5mg of HCTZ was given daily. After 6 weeks, ...
Venturini Federica - - 2011
A cell for the investigation of interfaces under pressure is presented. Given the pressure and temperature specifications of the cell, P ≤ 100 bar and 253 K ≤ T ≤ 323 K, respectively, high-energy X-rays are required to penetrate the thick Al(2)O(3) windows. The CH(4)(gas)/H(2)O(liquid) interface has been chosen to test the performance ...
Sharma Puneet - - 2011
The aim of this work was to evaluate a crystalline nanosuspension of an investigational anticancer compound, SN 30191. Solid forms of SN 30191 were prepared and characterized by thermal analysis, infrared spectroscopy, ¹³C CP/MAS SSNMR spectroscopy, SEM and powder XRD. Wet milling was performed using a high pressure homogenizer and ...
Jur Jesse S - - 2011
Improving nanoscale thin film deposition techniques such as atomic layer deposition (ALD) to permit operation at ambient pressure is important for high-throughput roll-to-roll processing of emerging flexible substrates, including polymer sheets and textiles. We present and investigate a novel reactor design for inorganic materials growth by ALD at atmospheric pressure. ...
Huang Chin-Chou - - 2011
Eur J Clin Invest 2011 ABSTRACTS: Background  While genetic variants of renin-angiotensin-aldosterone system (RAAS) may modify the blood pressure (BP) response to thiazide diuretics, there was no evidence of genetic variations in renin (REN) playing a role. This study aimed to address the potential effects of genetic variations of RAAS ...
Crapo Peter M PM Department of Surgery and the McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, Pennsylvania 15219, - - 2011
Prior studies have demonstrated that smooth muscle cell (SMC) proliferation, migration, and extracellular matrix production increase with hydrostatic pressure in vitro. We have engineered highly compliant small-diameter arterial constructs by culturing primary adult baboon arterial SMCs under pulsatile perfusion on tubular, porous, elastomeric scaffolds composed of poly(glycerol sebacate) (PGS). This ...
Allen Andrew M - - 2011
Whilst crucial for behavioural and homeostatic responses to environmental challenges, chronic elevation of sympathetic nervous system activity to specific vascular beds is associated with hypertension. Indeed such elevated activity may drive the increase in blood pressure seen in some people and in some experimental models of hypertension. This review discusses ...
Crommert M Eriksson - - 2011
Transversus abdominis (TrA) is a multifunctional muscle, being involved in pressure regulation within the abdominal cavity and thereby in direction independent stabilization of the spine and resistance to imposed trunk flexion moments. Indirect evidence suggests a role of TrA also in postural control of the erect human trunk. The main ...
Sakurai-Yamashita Yasuko - - 2011
Stroke-prone spontaneously hypertensive rats (SHRSPs) are vulnerable to ischemia and delayed neuronal death (DND) of hippocampus pyramidal cells when bilateral carotid arteries are occluded for only 10 min. Since this occlusion induces just mild ischemia, the resulting DND may be an appropriate animal model for dementia in patient with essential hypertension ...
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