Search Results
Results 251 - 300 of 1354
< 1 2 3 4 5 6 7 8 9 10 11 >
Fernández-Rodriguez Conrado M - - 2004
BACKGROUND: Endocannabinoids may participate in the homeostasis of arterial pressure. Recently, anandamide, the most extensively studied endocannabinoid, has been proposed as a key mediator in the peripheral arterial vasodilation of cirrhosis. OBJECTIVES: To determine if circulating levels of anandamide are related to the extent of the peripheral arterial vasodilation, the ...
Lin Han-Chieh - - 2004
Propranolol is known to decrease portal pressure in cirrhotic patients with portal hypertension; however, a substantial number of patients do not respond to propranolol administration. The addition of isosorbide-5-mononitrate may enhance portal pressure reduction in patients receiving propranolol. Carvedilol is a nonselective beta-blocker with alpha(1)-adrenergic blocking activity. It has been ...
Epley Nicholas - - 2004
The authors propose that people adopt others' perspectives by serially adjusting from their own. As predicted, estimates of others' perceptions were consistent with one's own but differed in a manner consistent with serial adjustment (Study 1). Participants were slower to indicate that another's perception would be different from--rather than similar ...
Nevens F - - 2004
Vasoactive drugs are safe and easy to administer, and universal treatment is the first-line approach for all patients with suspected variceal bleeding. There are strong arguments that the combination of vasoactive drugs, started as soon as possible, and endotherapy later on is the best therapeutic option, particularly in cases of ...
Dell'era A - - 2004
Gastro-oesophageal variceal bleeding is the last step in a chain of events that starts with an increased portal pressure, and is followed by the formation and progressive dilatation of gastro-oesophageal varices. When the tension of the thin wall of the varices exceeds its elastic limit, the varices rupture and bleed. ...
Naritaka Yoshihiko - - 2004
We performed TIPS (transjugular intrahepatic portosystemic shunt) in patients with intractable esophageal varices accompanied by repeated hematemesis or with refractory ascites for the purpose of portal venous decompression, and successfully obtained complete elimination of esophageal varices or a marked decrease in ascites. While TIPS caused no particular variations in mean ...
Techakumphu Mongkol - - 2004
The objective of the experiment was to study oocyte recovery by transvaginal, ultrasound-guided, follicle aspiration, from Thai swamp buffalo using different vacuum pressures. Six adult buffalo heifers, aged 2.5-3.0 yrs were treated with a total dose of 280 mg FSH, given twice a day in a divided doses over a ...
Omanwar Swati - - 2004
BACKGROUND: Non-cirrhotic portal hypertension is a common cause of portal hypertension in developing countries. To understand its etiopathogenesis we developed an animal model by repeated portal endotoxemia induced through the gastrosplenic vein. METHODS: Twenty-nine rabbits (1.5-2.0 kg) were divided into control (group I, n=13) and experimental (group II, n=16) groups. ...
Hassimoto Masatoshi - - 2004
The aim of this study was to determine if 6-month acclimation would enable accurate evaluation of hematological, biochemical data, and ECG recorded under restraint for conscious rhesus monkeys of both sexes. Periodic evaluation of these parameters was made during the 6-month period of acclimation. The platelet count, alkaline phosphatase, glucose, ...
Ikeda Hitoshi - - 2004
Although structural changes are most important to determine vascular resistance in portal hypertension, vasoactive mediators also contribute to its regulation. Hepatic stellate cells (HSCs) are assumed to play a role in modulating intrahepatic vascular resistance based on their residence in the space of Disse and capacity to contract. Because sphingosine ...
Hongratanaworakit T - - 2004
Scientific evaluations of the effects of fragrances on humans are rather scarce. The aim of this investigation was to study the effects of ylang-ylang oil (Cananga odorata, Annonaceae) on hu-man physiological parameters and self-evaluation. Twenty-four healthy volunteers participated in the experiments. Fragrances were administered by inhalation. Physiological parameters recorded were ...
Tüller Claudia - - 2004
BACKGROUND: Ornipressin and terlipressin, two ADH-derivates, are instilled endobronchially for bronchoscopy- related bleeding without sufficient evidence of efficacy, nor safety. OBJECTIVES: To compare the immediate hemodynamic effects of ornipressin and terlipressin used for procedure-related bleeding during flexible bronchoscopy. METHODS: This retrospective study included patients referred for flexible bronchoscopy who needed ...
Keiding S - - 2004
BACKGROUND: Patients with thrombosis of the portal or splenic vein may develop portal hypertension with bleeding from oesophageal or gastric varices. The relevant portal pressure cannot be measured by liver vein catheterization or transhepatic puncture of the portal vein because the obstruction is peripheral to the accessible part of the ...
McGuigan Rebecca M - - 2004
BACKGROUND: The purpose of this study is to determine whether calculated splanchnic perfusion pressure (SPP) is more predictive of outcome than measured intragastric pressure (IGP) in patients with gastroschisis. METHODS: Retrospective chart review from 1997 through 2003 of 12 patients with gastroschisis. RESULTS: Eight total patients with gastroschisis underwent reduction ...
Bucher P - - 2004
INTRODUCTION: Complications associated with intraportal islet infusion have been reported. In this study, we analyzed the relationship between occurrence of complications and islet preparation characteristics/infusion technique. METHODS: We reviewed all intraportal islet infusions from 1992 to 2003. RESULTS: Sixteen islet autotransplantations were performed without infusion-related complications. The tissue volume injected ...
Suetsuna Kunio - - 2004
We examined the angiotensin I-converting enzyme (ACE) inhibitory activity and antihypertensive effect of the hot water extract of wakame, Undaria pinnatifida. Ten dipeptides were isolated from the extract by several steps of chromatography, and their amino acid sequences were Tyr-His, Lys-Trp, Lys-Tyr, Lys-Phe, Phe-Tyr, Val-Trp, Val-Phe, Ile-Tyr, Ile-Trp, and Val-Tyr. ...
Macuhová J - - 2004
In experiment I, the effect of i.m. oxytocin (OT) injection (50 IU) on OT blood pattern was tested. Blood samples from 6 cows were collected for 2 h after OT injection either with or without milking. To test the effect of i.m. OT injection (50 IU) on milk ejection efficiency, ...
Vysotskaya Lidia B - - 2004
Removal of four out of five roots did not lower transpiration and stomatal conductivity of wheat (Triticum durum Desf.) seedlings. Water content of mature expanded leaf lamina remained constant at control levels. The results suggest that the only remaining root was capable to supply the shoot with water. This was ...
Smout André J P M - - 2004
PURPOSE OF REVIEW: In the past year, many studies were published in which new and relevant information on small intestinal motility in humans and laboratory animals was obtained. RECENT FINDINGS: Although the reported findings are heterogeneous, some themes appear to be particularly interesting and novel. Among these is the association ...
Vasudevan P T - - 2004
Lipases from different sources (porcine pancreas, Mucor miehei and Candida antarctica B) were covalently immobilized on a hydrophilic polyurethane composite (CoFoam). Their hydrolytic activities assayed with tributyrin were 0.55, 2.1 and 447 U g(-1), respectively. The activity of the C. antarctica B composite in the synthesis of methyl oleate in ...
Rodriguez Roberto - - 2004
The interaction during stimulation of cGMP and inhibition of cAMP was investigated in control and renal hypertensive hearts. Control and hypertensive [1 kidney, 1 clip (1K1C)] rabbits were used. The anesthetized open-chest groups were vehicle, 8-bromo-cGMP (8-Br-cGMP; 10(-3)M), propranolol (Prop; 2 mg/kg), and Prop + 8-Br-cGMP. O(2) consumption levels (Vo(2)) ...
Shiratsuchi Hiroe - - 2004
We hypothesized that changes in extracellular pressure during inflammation or infection regulate macrophage phagocytosis through modulating the focal adhesion kinase (FAK)-ERK pathway. Undifferentiated (monocyte-like) or PMA-differentiated (macrophage-like) THP-1 cells were incubated at 37 degrees C with serum-opsonized latex beads under ambient or 20-mmHg increased pressure. Pressure did not affect monocyte ...
Lai Lawrence - - 2004
BACKGROUND: The extrahepatic portal vein is inaccessible to direct catheterization. METHODS: Because EUS can readily image the portal vein, the feasibility of EUS-guided portal vein catheterization by using a 22-gauge needle was studied in 7 normal pigs and 14 pigs in which portal hypertension was induced (7/14 anticoagulated). RESULTS: Catheterization ...
Hu He-jie - - 2004
BACKGROUND: Portasystemic shunts, especially total shunts, are effective tools for reducing portal pressure and controlling variceal bleeding but lead to high risk of encephalopathy and accelerating liver failure. The purpose of this study is to evaluate the clinical effects of small-diameter expanded polytetrafluoroethylene (ePTFE) H-graft portacaval shunts in the treatment ...
Huang Hui-Chun - - 2004
BACKGROUND/AIMS: Nitric oxide (NO), a potent vasodilator, plays a significant role in the vascular hyposensitivity to vasoconstrictors related to portal hypertension. Chronic NO inhibition ameliorates portal-systemic collaterals in portal hypertensive rats. This study investigated whether chronic NO inhibition by NG-nitro-L-arginine methyl ester (L-NAME) improves the portal-systemic collateral vascular responsiveness to ...
Thalheimer Ulrich - - 2004
Many of the complications of cirrhosis reflect the presence of portal hypertension, which is commonly expressed as the hepatic venous pressure gradient (HVPG). Baseline and repeat measurements of HVPG have been recommended for the management of patients with cirrhosis in the setting of pharmacologic prophylaxis of variceal bleeding and for ...
Champion Hunter C - - 2004
Nitric oxide (NO) functions principally as a diffusible paracrine effector. The exception is in cardiomyocytes where both NO synthases (NOS) and target proteins coexist, allowing NO to work in an autocrine/intracrine fashion. However, the most abundant myocyte isoform (NOS3) is far more expressed in vascular endothelium; thus, the in vivo ...
Fiorucci Stefano - - 2004
Portal hypertension, a life threatening complication of liver cirrhosis, results from increased intrahepatic resistance and increased portal blood inflow through a hyperdynamic splanchnic system. The increased intrahepatic vascular tone is the result of an enhanced activity of endogenous vasoconstrictors and a deficiency of nitric oxide (NO) release by sinusoidal endothelial ...
Islas-Lima S - - 2004
Denitrification using methane as sole electron donor under anoxic condition was investigated. Sludge produced by a denitrifying reactor using acetate as electron donor was put in contact with methane at partial pressures from 1.8 to 35.7kPa. Nitrate depletion and gaseous nitrogen production were measured. The denitrification rate was independent of ...
Hemstreet Brian A - - 2004
Development of bleeding gastroesophageal varices is a serious consequence of portal hypertension secondary to cirrhosis. Nonselective beta-blockers have been used to reduce portal pressures and prevent primary and secondary bleeding episodes. However, up to two thirds of patients may not respond appropriately to these agents. Nonselective beta-blockers combined with vasodilatory ...
Kroez Monika - - 2003
Therapy with intravenous immunoglobulin preparations has been used effectively in a wide range of conditions. Although generally well tolerated, intravenous immunoglobulin preparations may be associated with transient hypotension in some patients. This study examined the role of different immunoglobulin G fractions in the development of intravenous immunoglobulin-induced hypotension in an ...
Mullen Kevin D - - 2003
The major theme of this discussion is how portal pressure after portosystemic shunt procedures may modulate the expression of hepatic encephalopathy. Decades of emphasis on the paramount importance of maintaining portal venous perfusion after shunt procedures is now being re-examined. In countries where non-cirrhotic portal hypertension is common, physicians have ...
Tona K - - 2003
Two peaks of embryo mortality have been identified during incubation of chicken eggs (the first and the final phases of incubation), and both are linked to egg turning. Turning in the first week enables proper formation of extra-embryonic membrane and in the final week avoids embryo malpositioning. The hatchability of ...
Morales Josephine - - 2003
F-180 is a new, long-acting analog of vasopressin with a selective agonist effect on the vascular V1a receptors, with the advantage of having no effect on renal V2 receptors. F-180 is approximately 20 times more powerful than terlipressin in reducing portal pressure and has less marked systemic effects. The present ...
Tsai Ming-Hung - - 2003
BACKGROUND & AIMS: Vasoconstriction of the superior mesenteric artery (SMA) is the earliest hemodynamic event occurring after partial portal vein ligation (PVL). We tested the hypothesis that this early vasoconstriction of the SMA may initiate eNOS up-regulation in PVL. METHODS: Portal hypertension with or without mesenteric vasoconstriction was induced by ...
Shimmen Teruo - - 2003
Mechano-perception by Chara cells was studied with an emphasis on the role of the nodal complex in transducing pressure signals into electrical signals. Three types of experimental material were used: (1) tandem internodal cells connected by a single layer of nodal cells; (2) single internodal cells, from which either apical ...
de Galan Bastiaan E - - 2003
Hypoglycemia unawareness is thought to be the consequence of recurrent hypoglycemia, yet the underlying mechanism is still incompletely understood. The aim of the present study was to determine the role of antecedent elevated adrenaline in the pathogenesis of hypoglycemia unawareness. Sixteen healthy volunteers (eight of either sex) participated in two ...
Schiedermaier P - - 2003
BACKGROUND: Long-acting somatostatin analogues have been suggested as an alternative to propranolol for the prevention of variceal rebleeding. AIM: To compare the effectiveness of lanreotide SR, a new depot formulation injected once-weekly, and propranolol in reducing circadian portal blood flow (PVF) and meal-stimulated hepatic venous pressure gradient (HVPG) in patients ...
Samra Jaswinder S - - 2003
Avulsion injury to portal vein tributaries can result in worrying haemorrhage during pancreatic gastric, and colonic resection. Attempts to control these avulsion injuries can result in extension of the tear into major portal vein tributaries. Pressure on the bleeding point tends to extend the laceration towards the portal vein, which ...
Birney Yvonne - - 2003
In the last decade, the knowledge of the pathogenesis of portal hypertension and cirrhosis has increased dramatically. In portal hypertension, almost all the known vasoactive systems/substances are activated or increased and the most recent studies have stressed the importance of the endothelial factors, in particular, prostaglandins. Prostaglandins are formed following ...
Ueda Yoshimi - - 2003
A 35% EtOH extract of flowers of Impatiens textori MIQ. showed an inhibitory effect on blood pressure decrease in response to platelet activating factor (PAF) measured with a blood pressure monitoring system. Bioassay-guided fractionation of the 35% EtOH extract (IT) led to isolation of the flavones apigenin (1) and luteolin ...
Sasamoto Yoshihiko - - 2003
The effects of twisting and type (single- or double-lumen) of aspiration needle on the efficiency of transvaginal ultrasound-guided ovum pick-up (US-guided OPU) were investigated in cattle. The first study using slaughterhouse ovaries revealed that twisting of the needle during follicle aspiration improved the oocyte recovery rate without deleterious effects on ...
Scheuer Deborah A - - 2004
Glucocorticoid receptors (GRs) are present at a high density in the nucleus of the solitary tract (NTS), an area of the dorsal hindbrain (DHB) that is critical for blood pressure regulation. However, whether these receptors play any role in the regulation of blood pressure is unknown. We tested the hypothesis ...
Ohta Emi - - 2003
Theonellapeptolide Ie (Tp), an oligopeptide lactone isolated from a marine sponge, Petrosia sp., was shown to induce an unprecedented morphological change in the immature oocytes of the starfish Asterina pectinifera. The cortical F-actin was disturbed and assembled to form dots and rings, as evidenced by staining with rhodamine-conjugated phalloidin. The ...
Miller Larry - - 2003
Great strides have been made in the endoscopic and radiologic therapy of esophageal varices in the past few years. With the advent of variceal band ligation and transjugular intrahepatic portosystemic shunt, almost every acute variceal bleed can be controlled. In addition, over the past decade great strides have been made ...
De Binay K - - 2003
BACKGROUND/AIMS: In cirrhosis, diastolic dysfunction of heart is well documented. Contribution of portal hypertension towards cardiac changes in cirrhosis is difficult to assess. We examined the patients of non-cirrhotic portal fibrosis who have portal hypertension without liver insufficiency to understand the contribution of portal hypertension in causing cardiac changes. METHODS: ...
Burak Kelly W - - 2003
Portal hypertensive gastropathy is a relatively recently described entity that is an important cause of bleeding in portal hypertension. This article focuses on the endoscopic diagnosis of portal hypertensive gastropathy, including a review of different proposed scoring systems, and briefly examines the epidemiology, pathogenesis, and treatment of portal hypertensive gastropathy.
Wang Hai - - 2003
OBJECTIVE: To determine the effect of Salviae miltiorrhizae on cirrhosis and portal hypertension by inhibiting nitric oxide synthase type II (NOSII) in rats. METHODS: Real time RT-PCR was used to detect the expression of NOSII mRNA. The enzymatic activity of nitric oxide synthase and the circulating levels of nitric oxide ...
Lambert Jill - - 2003
This study provides good evidence that continuous use of combination oral contraceptives for 1 year decreases bleeding without clinically important changes in blood pressure, weight, or hemoglobin when compared with cyclic users. Clinicians should consider offering this option to their patients, while continuing to look for evidence that addresses long-term ...
Campos J L - - 2003
Wastewater containing formaldehyde and urea was treated using a coupled system consisting of a biofilm airlift suspension (BAS) reactor and an anoxic upflow sludge blanket (USB) reactor. The anoxic USB reactor was used to carry out denitrification and urea hydrolysis, while the BAS reactor was used to carry out nitrification. ...
< 1 2 3 4 5 6 7 8 9 10 11 >