Search Results
Results 201 - 250 of 1354
< 1 2 3 4 5 6 7 8 9 10 >
Akashi Yoshihiro J - - 2005
Cachexia in patients with chronic heart failure (CHF) has been recognized for a long time; however, it has not received much attention until recently. Cardiac cachexia, a common and serious complication of CHF, is associated with very poor prognosis. Several studies have demonstrated that increased neurohormonal and immune abnormalities may ...
Wilkens J L - - 2006
We examined the cardiovascular responses to acute and chronic changes in blood volume (BV) in the land crab Cardisoma guanhumi. Acute reduction in BV caused an increase in activity in the dorsoventral muscles (DVMs) and to a lesser extent in the epimeral attractor muscles (EAMs). Contraction of the DVMs and ...
Klein Johannes - - 2006
The physiology of adipose tissue has a key role in the pathogenesis of the metabolic syndrome and related cardiovascular disorders. Three main functions of adipocytes have been proposed to explain this role: the secretion of adipocyte-derived hormones (so-called adipokines), energy dissipation/thermogenesis, and energy storage. There is mounting evidence that this ...
Henkes H - - 2006
Pressure measurements in arterial feeders of arteriovenous malformations (AVMs) can be easily acquired during endovascular treatment procedures. In this study, mean arterial pressure values in arterial feeders (Pfed) of brain AVMs were determined using a pressure measuring system connected to a standard microcatheter. A total of 148 measurements were performed ...
Leifer M S - - 2005
Many seemingly paradoxical effects are known in the predictions for outcomes of intermediate measurements made on pre- and post-selected quantum systems. Despite appearances, these effects do not demonstrate the impossibility of a noncontextual hidden variable theory, since an explanation in terms of measurement disturbance is possible. Nonetheless, we show that ...
Zhang Tian-tai - - 2005
AIM: To elucidate the involvement of the endothelin (ET) pathway in the pathogenesis of monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH) and the therapeutic effect of CPU 86017 (p-chlorobenzyltetrahydroberberine chloride) in rats. METHODS: Rats were injected with a single dose (60 mg/kg, sc) of MCT and given CPU 86017 (20, 40, ...
Lee M S W - - 2005
The aim of this study was to determine whether certain weather variables influence the secondary post-tonsillectomy haemorrhage rate and to examine the influence of a change in these variables on secondary haemorrhage. This was a prospective study carried out in a tertiary referral institution. All patients undergoing bilateral tonsillectomy over ...
Franssen Casper F M - - 2005
Automatic feedback systems have been designed to control relative blood volume changes during hemodialysis (HD) as hypovolemia plays a major role in the development of dialysis hypotension. Of these systems, one is based on the concept of blood volume tracking (BVT). BVT has been shown to improve intra-HD hemodynamic stability. ...
Lipp A - - 2005
BACKGROUND: Water drinking elicits a sympathetically mediated pressor response in multiple-system atrophy patients through an unknown mechanism. We reasoned that gastrointestinal distention, hyposomotic stimulation, or both contribute to the water-induced pressor response. METHODS: We compared the response to normal saline and water on blood pressure in 10 patients with probable ...
Nagula Satish - - 2006
BACKGROUND/AIMS: While the definitive diagnosis of cirrhosis is histological, it is the degree of portal hypertension, as determined by the hepatic venous pressure gradient (HVPG), that is an important determinant of the severity of cirrhosis. An HVPG > or =10 mmHg (termed clinically significant portal hypertension or CSPH) is predictive ...
Gillett Nathan P - - 2005
Air pressure at sea level during winter has decreased over the Arctic and increased in the Northern Hemisphere subtropics in recent decades, a change that has been associated with 50% of the Eurasian winter warming observed over the past 30 years, with 60% of the rainfall increase in Scotland and ...
Bonan Paulo Rogério Ferreti - - 2006
OBJECTIVE: The aim of this work was to study cytokeratin (Ck) expression in initial radiation-induced oral mucositis. STUDY DESIGN: Eleven cases of initial radiomucositis of the buccal mucosa and 9 normal specimens were immunostained for Ck 1, 5, 6, 7, 8, 10, 14, 16, 18, and 19 by immunoperoxidase method. ...
Merkel C - - 2005
BACKGROUND: The acute effects of beta-blockers may be different from chronic; mechanisms underlying this difference are poorly elucidated. AIM: To assess portal pressure and its pathophysiological determinants after acute and chronic administration of nadolol. METHODS: In 24 patients with cirrhosis and portal hypertension hepatic venous pressure gradient, portal blood flow ...
Cassan Delphine - - 2006
The aim of our study was to determine the impact of medium-pressure UV lamps radiation on water quality in a chlorinated indoor swimming pool. An indoor swimming pool was equipped with two medium-pressure UV lamps. We collected eight samples of water daily over a four-weeks period and measured total and ...
Cao Hui - - 2005
BACKGROUND: Shunt and devascularization have totally different effects on hemodynamics of the portal venous system, and the actual results of combined shunt and devascularization should be determined by more clinical observations. This study aimed to evaluate effects on hemodynamics of the portal venous system after conventional splenorenal shunt combined with ...
Ren Yong-Sheng - - 2006
Intermedin (IMD) is a novel member of the calcitonin/calcitonin gene-related peptide (CGRP) family identified from human and other vertebrate tissues. Preprointermedin can generate various mature peptides by proteolytic cleavage. Amino acid sequence analysis showed cleavage sites located between two basic amino acids at Arg93-Arg94 resulting in the production of prepro-IMD(95-147), ...
Smith Andrew M - - 2005
An unusual case of variceal bleeding at the site of a biliary enteric anastomosis is presented. This entity can occur when a high-to-low pressure gradient forms in a variceal field. In this case the anastomotic site was the location of the pressure gradient from the high-pressure small bowel varices to ...
Kim Taeyoon - - 2005
Chromogranin A (CHGA) and its derived peptides, which are stored and released from dense-core secretory granules of neuroendocrine cells, have been implicated as playing multiple roles in the endocrine, cardiovascular, and nervous systems. In this issue of the JCI, Mahapatra et al. present in vivo evidence for 2 important functions ...
Tattelman Ellen - - 2005
Garlic has long been used medicinally, most recently for its cardiovascular, antineoplastic, and antimicrobial properties. Sulfur compounds, including allicin, appear to be the active components in the root bulb of the garlic plant. Studies show significant but modest lipid-lowering effects and antiplatelet activity. Significant blood pressure reduction is not consistently ...
Thurston-Enriquez Jeanette A - - 2005
Concentrations of human health-related microorganisms in runoff from agricultural plots (0.75 m x 2 m) treated with fresh and aged cattle manure, swine slurry and no manure (control) were determined. Three consecutive simulated rainfall events, producing 35 mm rainfall and separated by 24 h, were carried out for each plot. ...
Chang Ching-Chih - - 2005
BACKGROUND: Recent studies have shown that endothelial nitric oxide (NO) is involved in modulating the vascular response to vasoconstrictors in portal-systemic collaterals of portal hypertensive rats. This study investigated which isoform of NO synthase is involved in the collateral circulation of portal hypertensive rats. METHODS: The relaxation response to acetylcholine ...
Garrido A G - - 2005
We investigated the systemic and regional hemodynamic effects of early crystalloid infusion in an experimental model of septic shock induced by intravenous inoculation with live Escherichia coli. Anesthetized dogs received an intravenous infusion of 1.2 x 10(10) cfu/kg live E. coli in 30 min. After 30 min of observation, they ...
Garcia-Tsao Guadalupe - - 2005
PURPOSE OF REVIEW: Report on significant advances in the pathophysiology, diagnosis, and management of the complications of portal hypertension that have occurred in the last year. RECENT FINDINGS: The specific areas reviewed refer to experimental studies aimed at modifying the factors that lead to portal hypertension (increased intrahepatic vascular resistance ...
Shekarriz Bijan - - 2005
Hydro-Jet technology utilizes an extremely thin, high-pressure stream of water. This technology has been routinely used in industry as a cutting tool for different materials such as metal, ceramic, wood and glass. Recently, Hydro-Jet technology has been used for dissection and resection during open and laparoscopic surgical procedures. A high-pressure ...
Hu B - - 2005
BACKGROUND AND STUDY AIMS: Endoscopic intracorporeal knots have potentially enormous applications in endoscopic surgery. We describe a method for testing the security of various types of endoscopically tied knots using a vessel perfusion manometer system. METHODS: A 4-cm segment of porcine splenic artery was placed on the mucosal surface of ...
Matthews Mark A - - 2005
We hypothesized that using calcium channel blockers (CCBs) that dilate microvasculature during percutaneous coronary intervention (PCI) would result in lower postprocedural creatine phosphokinase (CPK). PCI can be complicated by elevated CPK that has been associated with impaired microvascular perfusion. Nitroglycerin (NTG), the conventional PCI vasodilator, dilates epicardial arteries but does ...
Sen Sambit - - 2005
BACKGROUND/AIMS: In patients with alcoholic hepatitis (AH), inflammation contributes to the severity of portal hypertension. This study evaluates the acute effects of albumin dialysis, using the Molecular Adsorbents Recirculating System (MARS), on portal pressure in AH. METHODS: Eleven patients with AH and portal hypertension were treated with MARS (n=8) or ...
Schiffer Daniela - - 2005
A partial filling (PF) electrokinetic chromatography (EKC) system in combination with the application of weak counter pressures was built up by the combination of an UV-active polymeric dye, Poly R-478, used as additive in the separation buffer (SB) zone and an UV-permeable borate background buffer (BB). The electroosmotic flows of ...
Katsenis Konstantinos - - 2005
BACKGROUND: Renovascular hypertension is the most common curable form of secondary hypertension. Renin angiotensin system activation depends on the balance between renin production by the kidney and renin degradation by the liver. Thus, we aimed to examine whether deviation of renin-rich blood from the affected kidney into the portal circulation ...
Groszmann Roberto J - - 2005
The initial factor leading to portal hypertension is an increase in hepatic resistance. Later, an increase in portal blood flow contributes to maintain and exacerbate portal hypertension despite the development of portosystemic collaterals. The critical step in the development and acceptance of these concepts, which proved crucial for the management ...
Suh T K - - 2005
Sexing sperm by high-speed flow cytometry subjects them to high pressure. The routine operating pressure of the MoFlo SX flow cytometer for sperm sorting for commercial production has been 50 pounds/square inch (psi), with a standard 70 microm standard nozzle tip. It was hypothesized that lowering the sorting pressure could ...
Baik Soon Koo - - 2005
BACKGROUND: Octreotide and terlipressin are widely used in acute variceal hemorrhage to reduce the bleeding rate. They purportedly act by mesenteric arterial vasoconstriction, thus reducing portal venous flow (PVF) and portal pressure. Little is known about the immediate-early hemodynamic effects of these drugs. AIM: To compare the acute hemodynamic effects ...
Erario M A - - 2005
1. Portal hypertension (PH), a major syndrome in cirrhosis, producing hyperdynamic splanchnic circulation and hyperaemia. In order to elucidate the contribution of heme oxygenase to the vascular hyporeactivity, we assessed the activity of heme oxygenase-1 (HO-1), measured the in vivo pressure response to noradrenaline (NA) and investigated the effects of ...
Rossoni Giuseppe - - 2005
Pretreatment of anaesthetized guinea-pigs with either CHF 4226.01 (8-hydroxy-5-[(1R)-1-hydroxy-2-[N-[(1R)-2-(p-methoxyphenyl)-1-methylethyl]amino]ethyl] carbostyril hydrochloride), formoterol or budesonide reduced acetaldehyde (AcCHO)-evoked responses in the lungs with a rank order of potency CHF 4226.01 (ED(50) values, from 1.88 to 3.31 pmol) > formoterol (ED(50) values, from 3.03 to 5.51 pmol) >> budesonide (ED(50) values, from ...
Usküdar O─čuz - - 2005
Behçet's disease (BD) is a chronic recurrent systemic vasculitis of unknown cause. Thrombotic tendency is another characteristics of BD. While hemorheological changes play crucial role in thrombosis, erythrocyte deformability (ED), which is one of the main determinants of microcirculation and blood viscosity, has not been studied before in BD. ED ...
García Carlos - - 2005
This study reports the data recorded from four patients intoxicated with shellfish during the summer 2002, after consuming ribbed mussels (Aulacomya ater) with paralytic shellfish toxin contents of 8,066 +/- 61.37 microg/100 gr of tissue. Data associated with clinical variables and paralytic shellfish toxins analysis in plasma and urine of ...
Yagi Shintaro - - 2005
Several reports claim that portal hypertension after living-donor liver transplantation (LDLT) adversely affects graft function, but few have assessed the impact of portal venous pressure (PVP) on graft regeneration. We divided 32 adult LDLT recipients based on mean PVP during the 1st 3 days after LDLT into a group with ...
Bosch Jaime - - 2005
The complications of portal hypertension are totally prevented if hepatic venous pressure gradient is decreased below 12 mm Hg. Besides, if this target is not achieved, a 20% decrease in portal pressure from baseline levels offers an almost total protection from variceal bleeding. This sets the rationale for drug therapy ...
Yang Jian-Fen - - 2005
OBJECTIVES: Elevated portal inflow is part of the pathogenesis of portal hypertension in patients with cirrhosis. Vasoactive substances appear to play a primary role in the regulation of portal flow. The aim of this study was to investigate the effects of somatostatin and octreotide on portal pressure and plasma levels ...
Treiber Gerhard - - 2005
Portal hypertension is defined by an elevation in blood pressure in the portal system. Different causes are known and include a pre-, intra-, or posthepatic block. Portal hypertension is also classified according to the sinusoidal system. Portal pressure becomes elevated by either an increase in blood flow (Q), an increase ...
Lubel J S - - 2005
The development of portal hypertension plays a major role in the pathogenesis of many of the complications of chronic liver disease. In developed countries, most patients with portal hypertension have cirrhosis, and, in this condition, portal pressure is elevated as a result of both an increase in hepatic resistance to ...
Brenner P - - 2005
INTRODUCTION: Hyperacute xenograft rejection (HXR) and acute vascular rejection (AVR) after xenotransplantation are triggered by xenoreactive antibodies (XAb) and an activated complement cascade. In a heterotopic (abdominal) xenotransplantation model we combined immunoadsorption (IA, Ig-Therasorb column) and a quadruple immunosuppressive drug therapy in recipient baboons with donor pig hearts transgenic for ...
Passam F H - - 2004
The aim of this study was to assess circulating soluble intercellular adhesion molecule-1 (sICAM-1), soluble vascular cell adhesion molecule-1 (sVCAM-1), and interleukin-1beta (IL-1beta) in myelodysplastic syndromes (MDS) in order to evaluate their clinical significance. Seventy patients with untreated MDS [21 refractory anemia (RA), nine RA with ringed sideroblasts (RARS), 17 ...
Walsh M F - - 2004
Pressure in colonic tumours may increase during constipation, obstruction or peri-operatively. Pressure enhances colonocyte adhesion by a c-Src- and actin-cytoskeleton-dependent PKC-independent pathway. We hypothesized that pressure activates mitogenic signals. Malignant colonocytes on a collagen I matrix were subjected to 15 mmHg pressure. ERK, p38, c-Src and Akt phosphorylation and PKCalpha ...
Fauroux Brigitte - - 2004
The aim of the study was to evaluate the impact of Burkholderia cepacia on cardiovascular status and mortality in cystic fibrosis. Seven patients infected with B. cepacia were matched with 31 patients not infected with this organism for gender, age, height, weight, genotype, and percent predicted forced expiratory volume in ...
Berzigotti Annalisa - - 2004
OBJECTIVE: The haemodynamic changes induced by a meal on collateral vessels in portal hypertensive cirrhotic patients are not well characterized. We aimed to study the postprandial modifications of splanchnic circulation in patients with a patent paraumbilical vein (PUV). METHODS: We studied 10 cirrhotic patients with patent PUV and 10 matched ...
Lima Anna Carolina - - 2004
The purpose of this study was to investigate the spontaneous mandibular arch response to rapid palatal expansion as the sole orthodontic intervention. Particular attention was paid to clinically significant effects and long-term (mean age, 11.3 years) posttreatment stability in 30 Class I malocclusion patients treated during the early and mid ...
Hinterhuber Lukas - - 2004
Portal hypertension leading to variceal bleeding and ascites is a severe complication of liver cirrhosis and is associated with a high mortality rate. Endogenous vasoconstrictors including endothelin might play a role in control of intrahepatic vascular tone. Few patients develop pulmonary hypertension in the setting of portal hypertension, known as ...
Lee Dennis K - - 2005
The apelin peptide is the endogenous ligand for the apelin G protein-coupled receptor. The distribution of the apelin peptides and receptor are widespread in the central nervous system and periphery, with reported roles in the hypothalamic-pituitary-adrenal axis, blood pressure regulation and as one of the most potent positive inotropic substances ...
Mancera Juan Miguel - - 2004
The effect of 17beta-estradiol (E(2)) on osmoregulatory performance was examined in the euryhaline killifish, Fundulus heteroclitus. Fish were injected once with 1, 2 and 5 microg g(-1) E(2) and, 6 h after injection, transferred from 1 ppt seawater (SW) to full strength SW (40 ppt) or from SW to 1 ...
< 1 2 3 4 5 6 7 8 9 10 >