Acute depletion of heme by succinylacetone alters vascular responses but does not induce hypertension.

abstract：:Selected parameters of cardiovascular function were evaluated in vitamin A-deficient rats at 70 days of age. Resting heart rate was increased by an average of 100 bpm (21.4+/-2.7%), whereas resting systolic blood pressure was normal in vitamin A-deficient animals. The maximal contractile force developed per milligram ...

journal_title：Canadian journal of physiology and pharmacology

authors： Wright GL,Wang S,Fultz ME,Arif I,Matthews K,Chertow BS

更新日期：2002-01-01 00:00:00

abstract：:We have previously demonstrated a direct relationship between the activity of the arachidonic acid cascade in vivo and the extent of cellular damage following several types of experimental injury. Since phospholipase activity has been shown to regulate arachidonic acid availability, we tested the ability of circulatin...

journal_title：Canadian journal of physiology and pharmacology

authors： Flynn JT,Henry JM,Perkowski S

更新日期：1981-12-01 00:00:00

abstract：:Studies are scant on the effects of short-term carvedilol treatment as an adjuvant to angiotensin-converting enzyme (ACE) inhibitor in patients with left ventricular (LV) systolic dysfunction. The objective of this study was to find the effects of short-term treatment of carvedilol on patients with ischemic LV systoli...

journal_title：Canadian journal of physiology and pharmacology

authors： Gandhi PS,Goyal RK,Jain AR,Mallya BS,Gupta VM,Shah DS,Trivedi BR,Shastri NA,Mehta CB,Jain KA,Bhavasar NS,Shah UJ

更新日期：2007-02-01 00:00:00

abstract：:A variety of xenobiotics, viz., 3,3',4,4'-tetrachlorobiphenyl (TCBP), sodium phenobarbital (PB), 3,5-diethoxycarbonyl-2, 4,6-trimethylpyridine (OX-DDC), and nifedipine, cause a decrease in uroporphyrinogen decarboxylase (UROG-D) activity, accompanied by uroporphyrin accumulation, in chick embryo hepatocytes in culture...

journal_title：Canadian journal of physiology and pharmacology

authors： Green-Thompson RP,Kimmett SM,Marks GS

更新日期：1992-07-01 00:00:00

abstract：:Electrical stimulation of the diencephalon and rostral mesencephalon produced a biphasic pressor response consisting of an initial sharp rise followed by a more prolonged elevation in blood pressure. Active sites from which comparable responses could be evoked were found in the ventral medial and lateral hypothalamus,...

journal_title：Canadian journal of physiology and pharmacology

authors： Gauthier P

更新日期：1981-05-01 00:00:00

abstract：:Input to the nucleus medianus of the preoptic region has been suggested to be involved in both the drinking and pressor responses elicited by the central administration of angiotensin II. Evidence in support of this suggestion has been gained principally from electrical lesion experiments. This lesion procedure does n...

journal_title：Canadian journal of physiology and pharmacology

authors： Jones DL

更新日期：1988-08-01 00:00:00

abstract：:The ability of human skeletal muscle to provide anaerobically derived ATP during short-term, intense activity is examined. The paper emphasizes the information obtained from direct measurements of substrates, intermediates, and products of the pathways in muscle that provide anaerobically derived ATP. The capacity of ...

journal_title：Canadian journal of physiology and pharmacology

authors： Spriet LL

更新日期：1992-01-01 00:00:00

abstract：:Neonatal hyperthyroidism (NH) in the rat is associated with permanent reductions in serum thyroxine (T4), triiodothyronine (T3), and thyroid-stimulating hormone (TSH) concentrations in the adult, changes suggestive of a hypothyroid state. In the adult NH rat, the thyrotroph appears to be more sensitive to the feedback...

journal_title：Canadian journal of physiology and pharmacology

authors： Walker P

更新日期：1985-09-01 00:00:00

abstract：:A striking feature of the mammalian respiratory rhythm generator is the abruptness of the transitions between the inspiratory (I) and expiratory (E) phases ("phase-switching"). Although reciprocal inhibitory actions between I and E neurons are important for maintaining the alternation of respiratory phases, phase-swit...

journal_title：Canadian journal of physiology and pharmacology

authors： Cohen MI

更新日期：1981-07-01 00:00:00

abstract：:Damage to the stomach results in excessive movement of hydrogen ion (H+) out of the lumen, and increased movement of sodium (Na+) and potassium (K+) into the lumen. Histamine liberation during damage probably adds to the destruction by increased capillary permeability and formation of edema. Previous reports have show...

journal_title：Canadian journal of physiology and pharmacology

authors： Tepperman BL

更新日期：1979-03-01 00:00:00

abstract：:We investigated the effect of Ginkgo biloba extracts and some of its individual constituents on the oxidative metabolism of valproic acid (VPA) in hepatic microsomes from donors with the CYP2C9*1/*1 genotype. G. biloba extract decreased 4-ene-VPA, 3-OH-VPA, 4-OH-VPA, and 5-OH-VPA formation with mean (+/- SE) IC50 valu...

journal_title：Canadian journal of physiology and pharmacology

authors： Numa AM,Abbott FS,Chang TK

更新日期：2007-09-01 00:00:00

abstract：:We hypothesized that the respiratory baroreflex in conscious rats is either more transient, or has a higher pressure threshold than in other species. To characterize the effect of arterial pressure changes on respiration in conscious rats, ventilation (V) was measured by the plethysmographic technique during injection...

journal_title：Canadian journal of physiology and pharmacology

authors： Walker JK,Jennings DB

更新日期：1998-07-01 00:00:00

abstract：:The endothelium, although only a single layer of cells lining the vascular and lymphatic systems, contributes in multiple ways to vascular homeostasis. Subsequent to the 1980 report by Robert Furchgott and John Zawadzki, there has been a phenomenal increase in our knowledge concerning the signalling molecules and path...

journal_title：Canadian journal of physiology and pharmacology

authors： Triggle CR,Samuel SM,Ravishankar S,Marei I,Arunachalam G,Ding H

更新日期：2012-06-01 00:00:00

abstract：:Simple and complex cells of visual areas of cats may be reliably classified according to the modulatory index (MI) of their responses. This investigation is aimed at analysing the MI in area 18 when a small region (about 200-400 microm in diameter) of area 17 was inactivated with a microinjection of GABA, in anestheti...

journal_title：Canadian journal of physiology and pharmacology

authors： Chabli A,Fortin S,Shumikhina S,Molotchinikoff S

更新日期：1999-03-01 00:00:00

abstract：:The intestinal uptake of 0.5 and 40 mM glucose, galactose, and 3-O-methyl glucose (3-O-MG) was examined in vitro in rabbits fed a high (HS) or a low (LS) sucrose diet. In animals with an intact intestinal tract, the jejunal uptake of 0.5 mM 3-O-MG was unaffected by the dietary content of sucrose, whereas the uptake of...

journal_title：Canadian journal of physiology and pharmacology

authors： Thomson AB

更新日期：1987-11-01 00:00:00

abstract：:The threshold for electrically induced ventricular fibrillation was determined in anesthetized open-chest dogs, before and after blockade of atrioventricular (A-V) conduction. Without exception, the threshold was significantly elevated after creation of the block. The precise mechanism of this effect is not known at t...

journal_title：Canadian journal of physiology and pharmacology

authors： Reynolds AK,Dresel PE

更新日期：1983-09-01 00:00:00

abstract：:The effects of atorvastatin and carboxymethylated β-glucan (CMG) on the lipoprotein-cholesterol (LP-C) and lipoprotein-triglyceride (LP-TG) fractions and subfractions at the early stage of murine hyperlipidemia, and its pleiotropic anti-inflammatory effects, were studied. Atorvastatin and CMG were administered in ICR ...

journal_title：Canadian journal of physiology and pharmacology

authors： Korolenko TA,Tuzikov FV,Cherkanova MS,Johnston TP,Tuzikova NA,Loginova VM,Filjushina EE,Kaledin VI

更新日期：2012-02-01 00:00:00

abstract：:The mechanism whereby chronic rapid ventricular pacing induces severe heart failure is unclear, but the phenomenon is associated with a reduction in left ventricular ATP levels. Accordingly, the current study was undertaken to evaluate the acute effects of rapid ventricular pacing on hemodynamics, left ventricular ade...

journal_title：Canadian journal of physiology and pharmacology

authors： Simmons WW,Moe GW,Grima EA,Howard RJ,Armstrong PW

更新日期：1994-01-01 00:00:00

abstract：:Several studies have utilized the spontaneously hypertensive (SHR) diabetic rat to document the synergistic deleterious consequences of diabetes and hypertension on various organ systems. However, whether these effects are due entirely to the overlapping pathological states or partially result from a greater susceptib...

journal_title：Canadian journal of physiology and pharmacology

authors： Jian K,Fok E,Cam MC,Sambandam N,Yao J,Rodrigues B

更新日期：1996-11-01 00:00:00

abstract：:Strips of rabbit thoracic aorta precontracted with phenylephrine relaxed when exposed to selected synthetic peptides derived from the cell attachment domain of fibronectin. The relaxations elicited by both acetylcholine and the hexapeptide Gly-Arg-Gly-Asp-Ser-Pro (GRGDSP) were dependent on the presence of an intact en...

journal_title：Canadian journal of physiology and pharmacology

authors： Laplante C,St-Pierre S,Beaulieu AD,Marceau F

更新日期：1988-06-01 00:00:00

abstract：:Between 1 and 7 days of life, the newborn rabbit heart shifts from predominantly using carbohydrates to predominantly using fatty acids as an energy substrate. We therefore used isolated working hearts from 1- or 7-day-old rabbits to determine the effects of fatty acids on myocardial glucose use and the ability of hea...

journal_title：Canadian journal of physiology and pharmacology

authors： Lopaschuk GD,Spafford MA

更新日期：1992-10-01 00:00:00

abstract：:The mesangial cell is a contractile secreting cell found in a key position in the renal glomerulus. Several kidney and systemic diseases are associated with dysfunctions of the mesangial cells. We compared the effect of bradykinin (BK; B2 agonist) and des-Arg9-bradykinin (DBK; B1 agonist) on intracellular calcium mobi...

journal_title：Canadian journal of physiology and pharmacology

authors： Girolami JP,Ouardani M,Bascands JL,Pécher C,Bompart G,Leung-Tack J

更新日期：1995-07-01 00:00:00

abstract：:Induced ketosis may acutely prolong hypoxic tolerance by altering glucose and (or) beta-hydroxybutyrate extraction by the brain. Anesthetized dogs were ventilated and instrumental for arterial and cerebral venous blood sampling, taken during baseline, infusion, test, and recovery periods. Each dog received one of four...

journal_title：Canadian journal of physiology and pharmacology

authors： Chang AS,D'Alecy LG

更新日期：1993-07-01 00:00:00

abstract：:In mature (450-600 g) 21 degrees C-acclimated male rats, anaesthetized with urethane, blood flow (measured by the radioactive microsphere technique) to brown adipose tissue (BAT) was determined during the infusion of the beta-adrenoceptor agonist BRL 28410 or noradrenaline bitartrate at doses chosen to give similar in...

journal_title：Canadian journal of physiology and pharmacology

authors： Thurlby PL,Ellis RD

更新日期：1986-08-01 00:00:00

abstract：:Significant tension development resulting from the administration of lanthanum salts (La3+) to isolated aorta tissues was observed in preparations from the spontaneously hypertensive rat (SHR) but not in preparation from age-matched normotensive Wistar rats (NWR). The response to La3+ was significantly greater in tiss...

journal_title：Canadian journal of physiology and pharmacology

authors： Goldberg MT,Triggle CR

更新日期：1977-10-01 00:00:00

abstract：:The effect of intracerebroventricular (i.c.v.) injection of the alpha 2-adrenoceptor agonists clonidine and B-HT 920 on mean arterial pressure (MAP), heart rate (HR), and plasma concentrations of noradrenaline and adrenaline was examined in conscious unrestrained rats. The injection of 1.0 microgram clonidine signific...

journal_title：Canadian journal of physiology and pharmacology

authors： King KA,Pang CC

更新日期：1988-11-01 00:00:00

abstract：:In vivo assessment of treatment efficacy on postinfarct left ventricular (LV) remodeling is crucial for experimental studies. We examined the technical feasibility of serial magnetic resonance imaging (MRI) for monitoring early postinfarct remodeling in rats. MRI studies were performed with a 7-Tesla unit, 1, 3, 8, 15...

journal_title：Canadian journal of physiology and pharmacology

authors： Prunier F,Marescaux L,Franconi F,Thia A,Legras P,Lejeune JJ,Furber A

更新日期：2005-12-01 00:00:00

abstract：:This study was conducted to examine the protective role of crude polysaccharide from brown seaweed Sargassum polycystum against acetaminophen-induced abnormality in blood glucose, serum albumin/globulin ratio, and liver glycogen, lactate, and pyruvate. Liver and renal tissue histology was performed to confirm the effi...

journal_title：Canadian journal of physiology and pharmacology

authors： Raghavendran HR,Srinivasan P

更新日期：2008-10-01 00:00:00

abstract：:Resting membrane potentials and membrane conductances of chick skeletal muscle in culture were determined from the 3rd to the 10th day after plating. The effect of tetraethylammonium (TEA) and of replacement of potassium with caesium on these parameters was investigated. Resting membrane potential (Em) rises during my...

journal_title：Canadian journal of physiology and pharmacology

authors： Thomson CM,Dryden WF

更新日期：1980-06-01 00:00:00

abstract：:Modification of the mouse interstitial cell testosterone assay by the addition of 1.5 microM forskolin to the incubation medium has improved the sensitivity of this luteinizing hormone bioassay from approximately 100 to 3 pg/tube of NIH rLH RP-2. Luteinizing hormone can be clearly detected in 1 microL of serum from ra...

journal_title：Canadian journal of physiology and pharmacology

authors： Debertin WJ,Pomerantz DK

更新日期：1992-06-01 00:00:00