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Results 301 - 350 of 1422
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Farnham Melissa M J - - 2011
The rostral ventrolateral medulla contains presympathetic neurons that project monosynaptically to sympathetic preganglionic neurons (SPN) in the spinal cord and are essential for the tonic and reflex control of the cardiovascular system. SPN directly innervate the adrenal medulla and, via postganglionic axons, affect the heart, kidneys, and blood vessels to ...
Akiyama Kayo - - 2011
The effect of different frequencies of music on brain function was investigated through measurement of blood pressure in spontaneously hypertensive rats (SHR). Previous studies indicated that exposure to Mozart's music (K. 205) leads to increased calcium/calmodulin-dependent dopamine synthesis in the brain, and that the subsequent increase in dopamine reduces blood ...
Tang Yuan - - 2010
We sought to explore new strategies targeting SUR2B/Kir6.1, a subtype of adenosine triphosphate (ATP)-sensitive potassium channels (KATP), against pressure overload-induced heart failure. The effects of natakalim, a SUR2B/Kir6.1 selective channel opener, on progression of cardiac remodeling were investigated. Pressure overload-induced heart failure was induced in Wistar rats by abdominal aortic ...
Canola P A - - 2010
Reasons for performing study: Standing surgical procedures are being employed to an ever-greater extent in horses. Pneumoperitoneum during abdominal surgery might adversely affect the work of breathing. Objectives: To determine whether development of pneumoperitoneum during abdominal surgery adversely influences the work of breathing. Methods: Eight healthy mature horses were equipped ...
Bongartz Lennart G - - 2010
We recently developed a rat model of cardiorenal failure that is characterized by severe left ventricular systolic dysfunction (LVSD) and low nitric oxide (NO) production that persisted after temporary low-dose NO synthase inhibition. We hypothesized that LVSD was due to continued low NO availability and might be reversed by supplementing ...
Gu Juan - - 2011
To investigate the effects of lignans extracted from Eucommia ulmoides and epalrestat on vascular remodeling in spontaneously hypertensive rats. Ten-week-old male spontaneously hypertensive rats were randomly divided into 3 groups (12 rats each group), and treated orally with 100 mg/kg/d of captopril (an angiotensin-converting enzyme inhibitor), 100 mg/kg/d of epalrestat ...
Matsumoto Shigeji - - 2010
AIMS: the purpose of the present study was to investigate (a) whether maintained inflations result in the inhibition of slowly adapting pulmonary stretch receptor (SAR) discharge to elicit an abrupt change in receptor activity and (b) whether pretreatment with veratridine, a Na(+) channel opener, and/or flecainide, a Na(+) channel blocker, ...
Ishikawa Makoto - - 2010
A new experimental glaucoma model was developed by using an ex vivo rat retinal preparation to examine the effects of elevated hydrostatic pressure on retinal morphology and glutamine synthetase (GS) activity. Ex vivo rat retinas were exposed to elevated hydrostatic pressure for 24 hours in the presence of glutamate or ...
Fang Jian - - 2010
The adaptive changes that develop in the pressure-overloaded left ventricular myocardium include cardiac hypertrophy and interstitial fibrosis. The objectives of the present study were to evaluate the effects of Tanshinone II-A, a bioactive diterpene quinone isolated from Danshen, on cardiac fibrosis and collagen metabolism in rats with renovascular hypertension. Male ...
Sanchez D - - 2010
Endothelial dysfunction is one of the many proposed mechanisms of hypertension and it may justify, at least in part, the increased blood pressure of hypertensive subjects. Nevertheless, the exact mechanisms involved in the hypertensive condition of obese Zucker rats are unclear. In this study, we measured the arterial blood pressure ...
Kobayashi Yoshitaka - - 2010
STUDY DESIGN: The association between intramuscular pressure and low back pain was investigated by measuring intramuscular pressure and blood flow, assessing histologic appearance, and performing immunohistochemical testing in rats. OBJECTIVE: To develop an experimental rat model of increased intramuscular pressure (IMP) in the lumbar paraspinal muscles accompanied by reduced intramuscular ...
KopczyƄska Beata - - 2010
Arvanil is a metabolically stable hybrid between anandamide and capsaicin. The present study was designed to test the role of the vagal pathway in post-arvanil respiratory and blood pressure responses. Respiratory and pressure changes evoked by an intravenous injection of arvanil were investigated in 21 urethane-chloralose anaesthetised and spontaneously breathing ...
Tateishi Atsushi - - 2010
A large number of diverse signaling molecules in cell and animal models participate in the stimulus-response pathway through which the hypertrophic growth of the myocardium is controlled. However, the mechanisms of signaling pathway including the influence of lithium, which is known as an inhibitor of glycogen synthase kinase-3beta, in pressure ...
Sowmya Sagiraju - - 2010
Hyperhomocysteinemia (HHcy) is a metabolic disorder marked by an excess amount of the amino acid homocysteine (Hcy) in the blood stream. Hcy is a H(2)S precursor-formed from the metabolism of methionine. Elevated Hcy levels have been associated with higher blood pressure. However, the precise contribution of H(2)S to blood pressure ...
Lobo Denise Moreira Lima DM Universidade de Fortaleza, Fortaleza, CE, - - 2010
To evaluate the applicability of the bag squeezing and zeep maneuvers in mechanically ventilated patients. Twenty stable mechanically ventilated patients were studied. All patients were randomly allocated to either bag squeezing techinique followed by zeep maneuver, or the reversed sequence. Each group crossed to the other sequence four hours later. ...
Leung S W S - - 2010
Danshen is the dried root and rhizome of the Chinese medicinal plant Salvia miltiorrhiza Bunge (Labiatae), which has been used to treat hypertension and myocardial infarction. One of its water-soluble active components is magnesium tanshinoate B (MTB). The present study examined and compared the cardiovascular effects of the water-soluble extract ...
Darbin O - - 2010
High pressure of helium-oxygen (He-O2) increases the extracellular levels in both serotonine and dopamine in the rat striatum. Some motor symptoms evoked by high pressure (i.e., LMA) are known to be reduced by intrastriatal infusions of D1-like (SCH23390, 1 microM) or D2-like (Sulpiride, 1 microM) dopaminergic antagonists. Other studies have ...
Godse Sandip - - 2010
Fructose feeding induces a rise in blood pressure in normal rats and is associated with insulin resistance, hyperinsulinemia, and hypertriglyceridemia. We have examined the effect of myricetin (100 and 300 mg/kg, p.o. for 6 weeks) isolated from Vitis vinifera Linn. (Vitaceae) on systolic blood pressure (SBP), vascular reactivity, serum glucose, ...
Yu Xiao - - 2010
The aim of this study was to investigate the potential beneficial effects of celastrol, a compound with anti-inflammatory and antioxidant properties, on vascular smooth muscle cells (VSMCs) under hypertensive conditions. Hypertension was induced in rats by fructose feeding. Hypertensive rats were injected with celastrol, and systolic blood pressure (SBP) and ...
Shams M Shahbaz - - 2010
AIMS: Transdermal therapeutic systems were developed using the polymers, Eudragit E 100 and polyvinyl pyrrolidone VA 64 in a film casting assembly. The medicated films were evaluated for physical properties, in vitro drug release studies, in vitro skin permeation studies, and pharmacodynamic studies. RESULTS: The physical parameters were found to ...
Rybczynska A - - 2010
Calcilytics, antagonists of calcium receptor, decrease sensitivity of this receptor to plasma calcium concentration and increase parathyroid hormone (PTH) secretion. Moreover, it was recently indicated that calcilytic NPS 2143 induces hypertension in rats. This study tested whether the increase of mean arterial blood pressure (MAP) induced by NPS 2143 administration ...
Olatunji L A - - 2010
The present study sought to investigate the effects of prostaglandins synthesis inhibition with indomethacin on blood pressure, heart rate, cardiac weight, plasma electrolytes and cardiovascular responses to arterial baroreceptor stimulation in Oral contraceptive (OC) treated female Sprague-Dawley rats. Oral administration of synthetic oestrogen, ethinyl oestradiol in combination with progestogen, norgestrel ...
Santos Laura Jurema Dos LJ Curso de Fisioterapia, Universidade Luterana do Brasil - - - 2010
To verify the effects of manual hyperinflation maneuver associated with positive end expiratory pressure in coronary artery bypass grafting patients. This was a randomized trial, conducted from August 2007 to July 2008 in the intensive care unit of the Hospital Luterano (ULBRA). The patients were divided in the groups intervention ...
Ameer O Z - - 2010
We investigated the vascular responses and the blood pressure reducing effects of different fractions obtained from the methanol extract of Loranthus ferrugineus Roxb. (F. Loranthaceae). By means of solvent-solvent extraction, L. ferrugineus methanol extract (LFME) was successively fractionated with chloroform, ethyl acetate and n-butanol. The ability of these LFME fractions ...
De Brito Gariepy H - - 2010
Kinins are neuroactive peptides that could play a role in central autonomic control of blood pressure. Whereas kinin B1R binding sites were increased in specific brain areas of spontaneously hypertensive rats (SHR) and Angiotensin II (AngII)-hypertensive rats, the contribution of kinin B1R in hypertension remains controversial. The aims of the ...
Liu Yue - - 2010
Cortistatin (CST) is a newly discovered polypeptide with multiple biological activities that plays a regulatory role in the nervous, endocrine and immune systems. However, the role of CST in the pathogenesis of cardiovascular diseases remains unclear. In this study, we investigated in rats whether CST inhibits vascular calcification induced by ...
Nishi Erika Emy - - 2010
The aim of this study was to investigate, through the single-cell gel (comet) assay, whether vitamin C is able to protect against renovascular hypertension-induced genotoxicity in multiple organs. A total of 32 male Wistar rats were divided into four groups: negative control (n = 6); animals treated with vitamin C ...
Amin Osama Shukir Muhammed - - 2010
The occurrence of simultaneous spontaneous non-traumatic hypertensive intracerebral haemorrhages (ICHs) is a rare event that carries a considerable morbidity and mortality. These haematomas constitute 0.7-2% of all hypertensive ICHs. We report a 42-year-old man with ischaemic heart disease who presented with sudden severe pancephalic headache, repeated vomiting and left-sided weakness. ...
Ishii Yukihito - - 2010
The Spontaneously Diabetic Torii-Lepr(fa) (SDT-fa/fa) rat, a new model of obese type 2 diabetes, shows obesity, hyperglycemia, and hyperlipidemia from 6 weeks of age. Diabetic complications such as nephropathy and cataract are observed with aging; however, blood pressure change with age has not previously been examined. In this study, blood ...
Mihara Yuko - - 2010
Acute subdural hematoma (ASDH) is a critical condition following the onset of traumatic brain injury, and it is essential to immediately reduce elevated intracranial pressure (ICP). Single burr hole surgery/twist drill craniostomy is commonly performed in patients with ASDH as an emergency surgical intervention, usually preceding decompressive craniotomy. A novel ...
Rokamp Kim Z - - 2010
To prevent endothelium and nerve lesions, tracheal tube and laryngeal mask cuff pressure is to be maintained at a low level and yet be high enough to secure air sealing. In a prospective quality-control study, 201 patients undergoing surgery during anaesthesia (without the use of nitrous oxide) were included for ...
Rizk Natalie N - - 2010
The majority of retropharyngeal hematomas described in the literature have been associated with anticoagulation therapy, tumors, aneurysm, infection or cervical spine injury. We present a case of a 55-year-old African American female with acute chest pain, sore throat, and dysphagia. Her past medical history was significant for uncontrolled hypertension and ...
Doyle Alex - - 2010
The Lotrach endotracheal tube has a unique low-volume, low-pressure (LVLP) cuff, which has been designed to prevent pressure injury to the tracheal wall. We aimed to estimate the pressure exerted on the tracheal wall by the LVLP cuff and a conventional cuff in a bench-top, clinical and radiological study. In ...
Hlavackova L - - 2010
The presented study is aimed on exploring the effects of black pepper on blood pressure in the rat model of experimental hypertension induced by chronic NO synthesis inhibition. Piperine, the compound of black pepper, can cause a significant decrease of blood pressure in normotensive rats possibly via calcium channel blockade, ...
Ribeiro Junior Rogério Faustino - - 2010
Our aim was to evaluate the effects of soybean oil treatment for 15 days on arterial and ventricular pressure, myocardial mechanics and proteins involved in calcium handling. Wistar rats were divided in two groups receiving 100 microL of soybean oil (SB) or saline (CT) i.m. for 15 days. Ventricular performance ...
Leong Xin-Fang - - 2010
Poor control of blood pressure leads to hypertension which is a major risk factor for development of cardiovascular disease. The present study aimed to explore possible mechanisms of elevation in blood pressure following consumption of heated vegetable oil. Forty-two male Sprague-Dawley rats were equally divided into six groups: Group I ...
Xiao Liang - - 2010
Previous studies in our laboratory have shown that tentacle-only extract (TOE) has similar hypotensive effects with nematocyst venom from jellyfish Cyanea capillata, and the experimental studies on the in vivo cardiovascular effects of TOE were further performed to explore the leading cause of death and analyze the basic physiopathologic change ...
Kadowaki Daisuke - - 2009
Angiotensin II type 1 receptor blockers, which inhibit the rennin-angiotensin system, are used in the treatment of hypertension. In addition to their ability to lower blood pressure, these compounds have also been reported to protect organs, such as kidney and heart. Although the mechanisms of these protective effects are not ...
Li Zhao-Feng - - 2010
Obestatin, encoded by the same gene as ghrelin, was first described as a physiological opponent of ghrelin. We investigated fasting plasma ghrelin and obestatin levels in spontaneously hypertensive rats and Wistar-Kyoto rats. We found that ghrelin levels, obestatin levels and the ratio of ghrelin to obestatin were significantly higher in ...
Bankar Girish R - - 2010
We have previously demonstrated the vasorelaxant activity of 1,3,4-oxadiazole derivative (NOX-1) through L-type Ca2+ channel blockage. In the present study, we investigated whether the correction of endothelial dysfunction is dependent on the normalization of high blood pressure levels by 1,3,4-oxadiazole derivative (NOX-1) in deoxycorticosterone acetate (DOCA-salt) and N(G)-nitro-l-arginine (L-NNA) hypertensive ...
Wang B - - 2010
BACKGROUND: We have previously shown that ingestion of Lactobacillus reuteri may modulate colonic enteric neuron activity but with unknown effects on colon motility. The aim of the present report was to elucidate the neuronal mechanisms of action of the probiotic by comparing the effects on motility of L. reuteri ingestion ...
Silva-Junior Geraldo de Oliveira Gde - - 2011
Peroxisome proliferator-activated receptor-gamma (PPAR-gamma) agonists have been shown controlling blood pressure (BP) in spontaneously hypertensive rats and salt-sensitive hypertensive rats. The present study aims to test the hypothesis that PPAR-gamma agonist rosiglitazone has beneficial effects on cardiac and vascular adverse remodeling in a model of renovascular hypertension (two-kidneys-one-clip, 2K1C model). ...
Ke Qingen - - 2009
Combretastatin A-4 phosphate (CA4P) is a novel and promising anti-neoplastic agent. However, it is associated with transient hypertension in both animal and human models. In this study, we examined the potential cardiac toxicity and hypertensive effects of CA4P, and defined the most effective pharmacological inhibition of CA4P-induced hypertension in rats. ...
Belmokhtar Mounia - - 2009
Cistus ladaniferus L. (Cistaceae) is a medicinal plant originated from the Mediterranean region which exerts different pharmacological effects. In the present study, our goal was to examine whether the plant possessed antihypertensive properties. Aqueous extract of Cistus leaves (AEC, 500mg/kg/day) reduced systemic blood pressure (SBP) in two animal models of ...
Mohan Mahalaxmi - - 2009
ETHNOPHARMACOLOGICAL RELEVANCE: Solanum torvum (Solanaceae) is a plant used in Cameroon ethnomedicine for the treatment of hypertension. AIM OF THE STUDY: The present study was aimed to determine the effect of ethanolic extract of Solanum torvum (100 and 300 mg/kg; p.o. for 6 weeks) on systolic blood pressure (SBP), vascular ...
Zeman Michal - - 2009
OBJECTIVES: Plasma melatonin concentrations in non-dipping patients show a blunted daily rhythm. Melatonin has a capacity to improve disturbances in biological rhythms. Hypertensive TGR(mRen2)27 (TGR) rats with an upregulated renin-angiotensin system and inverted blood pressure profile were used to elucidate whether melatonin is able to influence the control of blood ...
Laugero Kevin D - - 2009
BACKGROUND: Exenatide is a peptide incretin mimetic that has glucoregulatory actions associated with weight reduction. Previous reports demonstrated acute increases in blood pressure after systemic or intracerebroventricular administration of exenatide or glucagon like peptide 1 (GLP 1) in rats. However, there are limited studies testing the chronic effects of these ...
Ong Sharon Leng Hong - - 2009
Although dexamethasone (DEX) is known to cause hypertension in humans and in animals, the hemodynamic characteristics of DEX-induced hypertension (DEX-HT) in the rat remain unclear. This study evaluated central and regional hemodynamics, and the role of total peripheral resistance (TPR) using a vasodilator minoxidil. Rats were divided into four groups, ...
Li Zhao-Feng - - 2009
Ghrelin, an endogenous ligand for the GH secretagogue receptor, has been shown to decrease arterial pressure. Obestatin, a sibling of ghrelin derived from preproghrelin, opposes several physiological actions of ghrelin. The aim of this study was to determine the effects of bolus intravenous injection of obestatin on blood pressure in ...
Chandler Derrick L DL Department of Physiology and Biophysics, Center for Excellence in Cardiovascular-Renal Research, University of Mississippi Medical Center, Jackson, Mississippi, - - 2009
An elevated plasma level of homocysteine (hyperhomocysteinemia) is thought to be an important risk factor for a variety of cardiovascular diseases including preeclampsia. Although clinical studies have reported a two- to threefold elevation in plasma levels of homocysteine in women who developed preeclampsia, the importance of hyperhomocysteinemia in causing endothelial ...
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