Heterogeneity of vascular alpha-adrenoceptors in man.

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：:Rats were treated daily with atropine (2.5 mg/kg), imipramine (5 mg/kg), viloxazine (5 mg/kg), or saline for 14 days. Thirty-six hours following the final injection the rats were anaesthetized with urethane and the sensitivity of neurones in the somatosensory cortex to iontophoretically applied acetylcholine (ACh) was...

journal_title：Canadian journal of physiology and pharmacology

authors： Jones RS

更新日期：1980-05-01 00:00:00

abstract：:The contractile recoverability of isolated portal veins made hypodynamic by removal of glucose from the perfusion medium by diverse exogenous substrates was studied. It was found that glucose, mannose, pyruvate, lactate, acetate, and butyrate readily restored contraction. The effects of anoxia and metabolic inhibitors...

journal_title：Canadian journal of physiology and pharmacology

authors： Cremer-Lacuara MG,Lacuara JL,Fiol de Cuneo M,Ruiz RD

更新日期：1980-06-01 00:00:00

abstract：:Isoprenaline and forskolin both inhibit contractions induced by antigen or by the calcium ionophore A23187 of guinea pig tracheal spirals and parenchymal strips. Antigen-induced airway contraction is considerably more sensitive to the inhibitory effects of isoprenaline than is A23187-induced contraction. In contrast, ...

journal_title：Canadian journal of physiology and pharmacology

authors： Burka JF

更新日期：1983-06-01 00:00:00

abstract：:The effects of forskolin, Ro 20-1724, rolipram, and 3-isobutyl-1-methylxanthine (IBMX) on morphine-evoked release of adenosine from dorsal spinal cord synaptosomes were evaluated to examine the potential involvement of cyclic AMP in this action of morphine. Ro 20-1724 (1-100 microM), rolipram (1-100 microM), and forsk...

journal_title：Canadian journal of physiology and pharmacology

authors： Nicholson D,White TD,Sawynok J

更新日期：1991-06-01 00:00:00

abstract：:Systolic blood pressure was measured weekly in conscious and in anesthetized female Sprague-Dawley (SD) and Wistar-Furth (W/Fu) rats following adrenal enucleation, unilateral nephrectomy, and the imposition of a high salt intake. SD rats quickly developed adrenal-regeneration hypertension (ARH) which progressed rapidl...

journal_title：Canadian journal of physiology and pharmacology

authors： Hall CE,Nasseth D

更新日期：1978-12-01 00:00:00

abstract：:The aim of the present investigation was to elucidate the pharmacological mechanism by which U44069, a stable PGH2 analogue, contracts the rat aorta. The results obtained demonstrate that while the contractile effect of potassium chloride is obliterated by removal of extracellular calcium, a substantial proportion of ...

journal_title：Canadian journal of physiology and pharmacology

authors： Heaslip RJ,Rahwan RG

更新日期：1982-05-01 00:00:00

abstract：:The influence of external potassium Ko and tetraethylammonium on the cellular K content of hypoxic myocardium was investigated. Perfused rabbit hearts were submitted to 60 min hypoxia in medium containing 5 mM K throughout or either low (1.5 mM) or high (10 mM) K during the last 20 min of hypoxia. Paced electrical act...

journal_title：Canadian journal of physiology and pharmacology

authors： Leblanc N,Ruiz-Ceretti E,Chartier D

更新日期：1987-05-01 00:00:00

abstract：:The sarco(endo)plasmic reticulum calcium ATPase (SERCA) is responsible for transporting calcium (Ca(2+)) from the cytosol into the lumen of the sarcoplasmic reticulum (SR) following muscular contraction. The Ca(2+) sequestering activity of SERCA facilitates muscular relaxation in both cardiac and skeletal muscle. Ther...

journal_title：Canadian journal of physiology and pharmacology

authors： Stammers AN,Susser SE,Hamm NC,Hlynsky MW,Kimber DE,Kehler DS,Duhamel TA

更新日期：2015-10-01 00:00:00

abstract：:Microwaves may exert adverse biological effects on the cardiovascular system at the integrated system and cellular levels. However, the mechanism underlying such effects remains poorly understood. Here, we report a previously uncharacterized mechanism through which microwaves damage myocardial cells. Rats were treated...

journal_title：Canadian journal of physiology and pharmacology

authors： Zhu W,Cui Y,Feng X,Li Y,Zhang W,Xu J,Wang H,Lv S

更新日期：2016-08-01 00:00:00

abstract：:We investigated potential sex differences in bone resorption and the conservation of whole body bone mass in 24-week-old Sprague-Dawley rats maintained on a 1.0% calcium diet and then fed diets containing 0.02, 0.5, 1.0, or 1.75% calcium for 31 days. Lowering dietary calcium from 1.00% to 0.02% doubled whole skeleton ...

journal_title：Canadian journal of physiology and pharmacology

authors： Geng W,Wright GL

更新日期：2001-05-01 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

abstract：:Since human thermoregulation at rest is altered by cold exposure, it was hypothesized that physical training under cold conditions would alter thermoregulation. Three groups (n = 8) of male subjects (mean age 24.3 +/- 0.9 years) were evaluated: group T (interval training at 21 degrees C), group CT (interval training a...

journal_title：Canadian journal of physiology and pharmacology

authors： Launay JC,Besnard Y,Guinet A,Hanniquet AM,Bittel J,Savourey G

更新日期：2002-09-01 00:00:00

abstract：:The anticonvulsant activity of delta9-tetrahydrocannabinol (delta9-THC) has been determined against seizures induced in epileptic chickens by intermittent photic stimulation (IPS) and in epileptic and nonepileptic chickens by Metrazol. Intravenous administration of the drug reduced both the severity and incidence of s...

journal_title：Canadian journal of physiology and pharmacology

authors： Johnson DD,McNeill JR,Crawford RD,Wilcox WC

更新日期：1975-12-01 00:00:00

abstract：:Negative chronotropic effects of beta-adrenoceptor (betaAR) antagonists on right atria from reserpine-treated rats and mice were determined as a test of their inverse agonist activities. BetaAR antagonist ICI-118,551 and nonselective betaAR antagonists alprenolol, propranolol, and timolol produced negative chronotropi...

journal_title：Canadian journal of physiology and pharmacology

authors： Varma DR

更新日期：1999-12-01 00:00:00

abstract：:The isolated human vas deferens (HVD) has been the subject of a limited number of pharmacological studies. Furthermore, it has not been established whether the local or general anesthetics used in obtaining the HVD affect the responses of this isolated tissue. Therefore, the aim of this study was to determine if the l...

journal_title：Canadian journal of physiology and pharmacology

authors： Kawamoto JH,Owen JA,Morales A,Nakatsu K

更新日期：1986-04-01 00:00:00

abstract：:A method for the determination of the specific activity of plasma glycerol is described. Anionic contaminants are first removed from deproteinzed plasma by anionic exchange resins (treated plasma). Glycerol in treated plasma is then quantitatively converted to glycerol-3-phosphate (G3P), which is isolated by column ch...

journal_title：Canadian journal of physiology and pharmacology

authors： Gauthier C,Layberry R

更新日期：1982-06-01 00:00:00

abstract：:Statins are determined to have various pleiotropic effects apart from their lipid-lowering properties. Herein, we investigated the direct effects of atorvastatin on gastric smooth muscle tone. Atorvastatin effectively relaxed isolated rat gastric fundus strips precontracted with acetylcholine, potassium chloride, and ...

journal_title：Canadian journal of physiology and pharmacology

authors： Kaleli-Durman D,Alp-Yıldırım Fİ,Özdemir O,Uydeş-Doğan BS

更新日期：2019-05-01 00:00:00

abstract：:In assessing the role that atrial natriuretic peptide (ANP) might have in the homeostasis of fluid volume and blood pressure, it is important to define the physiological and pathophysiological conditions that determine its release into the circulation. There is substantial evidence that ANP is released through atrial ...

journal_title：Canadian journal of physiology and pharmacology

authors： Rankin AJ

更新日期：1987-08-01 00:00:00

abstract：:For 10 days, dogs were fed a normal salt diet containing 70 mequiv. Na+/day (NSD) followed by a high salt diet containing 170 mequiv. Na+/day (HSD) or 240 mequiv. Na+/day (VHSD), or the order was reversed. K+ in these diets was fixed at 40 mequiv./day. The different diets did not influence the basal level of serum cat...

journal_title：Canadian journal of physiology and pharmacology

authors： Carrière S,Cardinal J,Le Grimellec C

更新日期：1980-09-01 00:00:00

abstract：:Acute dose--response studies were conducted to determine if ethosuximide had anticonvulsant activity against seizures evoked by stroboscopic stimulation of epileptic fowl and to correlate the observed effects with the concentration of the drug in the plasma. Ethosuximide, in doses that produced mean plasma concentrati...

journal_title：Canadian journal of physiology and pharmacology

authors： Davis HL,Johnson DD,Crawford RD

更新日期：1978-10-01 00:00:00

abstract：:The aim of this study was to identify the key genes involved in the cardiac hypertrophy (CH) induced by pressure overload. mRNA microarray data sets GSE5500 and GSE18801 were downloaded from the Gene Expression Omnibus database, and differentially expressed genes (DEGs) were screened using the Limma package; then, fun...

journal_title：Canadian journal of physiology and pharmacology

authors： Gao J,Li Y,Wang T,Shi Z,Zhang Y,Liu S,Wen P,Ma C

更新日期：2018-08-01 00:00:00

abstract：:A principal step in the process leading to muscle contraction is the intracellular release of Ca2+. We have detected and compared some physical and chemical events that reflect Ca2+ release in contracting frog skeletal muscle cells, described the effects of some agents that are believed to alter intracellular Ca2+ rel...

journal_title：Canadian journal of physiology and pharmacology

authors： Taylor SR,Lopez JR,Griffiths PJ,Trube G,Cecchi G

更新日期：1982-04-01 00:00:00

abstract：:We previously reported that calpain, the Ca2+-sensitive cysteine protease, gets involved in atherogenesis. This study aimed to investigate the effects of calpain inhibitor I (CAI, 5 mg/kg per day) with or without NG-nitro-l-arginine-methyl ester (l-NAME) (100 mg/kg per day), the inhibitor of nitric oxide synthase (NOS...

journal_title：Canadian journal of physiology and pharmacology

authors： Yu L,Yin M,Yang X,Lu M,Tang F,Wang H

更新日期：2018-01-01 00:00:00

abstract：:A knowledge of the mechanical properties of valve tissue is a necessary prerequisite for a better understanding of valvular behavior and design of prosthetic heart valves. Elastic response of chordae tendineae under strain rates of 0.05 cm min(-1)(6.25% min(-1)) to 12.7 cm min(-1)(1600% min(-1)) were obtained by the a...

journal_title：Canadian journal of physiology and pharmacology

authors： Lim KO,Boughner DR

更新日期：1975-06-01 00:00:00

abstract：:Alterations of the ionic constituents of solutions perfused through the tissue of the posterior hypothalamic region in conscious cats elicited changes in body temperatures. Increasing the (Ca2+) to (Na+) ratio of the perfusion solution elicited falls in body temperature which were accompanied by changes in posture and...

journal_title：Canadian journal of physiology and pharmacology

authors： Jones DL,Veale WL,Cooper KE

更新日期：1978-08-01 00:00:00

abstract：:There are important differences in pain arising from deep tissues in comparison to cutaneous pain. These differences can be partially explained by the unique organization of nociceptive systems activated by stimulation of muscle, joint, or viscera. Recent evidence also indicates that stimulation of deep tissues can pr...

journal_title：Canadian journal of physiology and pharmacology

authors： Dubner R

更新日期：1991-05-01 00:00:00

abstract：:This study aimed to test whether boswellic acids add to the antitumor effects of doxorubicin against solid tumors of Ehrlich's ascites carcinoma (EAC) grown in mice, and to investigate the protective effects of boswellic acids against doxorubicin-induced cardiotoxicity. Sixty-four female Swiss albino mice bearing EAC ...

journal_title：Canadian journal of physiology and pharmacology

authors： Ali SA,Zaitone SA,Moustafa YM

更新日期：2015-08-01 00:00:00

abstract：:Because the excessive apoptosis of articular chondrocytes contributes to extracellular matrix (ECM) loss and cartilage damage in rheumatoid arthritis (RA), inhibiting chondrocyte apoptosis might be a promising strategy for RA. Aquaporin1 (AQP1) is overexpressed in RA cartilage and synovial tissues, and play a vital pa...

journal_title：Canadian journal of physiology and pharmacology

authors： Cai L,Chen WN,Li R,Liu MM,Lei C,Li CM,Qiu YY

更新日期：2018-11-01 00:00:00

abstract：:Our objective was to determine the effects of a clenbuterol (CB) treatment orally administered (2 mg per kg) to rats submitted to 14 days of hindlimb unloading (HU). The morphological and the contractile properties as well as the myosin heavy chain isoforms contained in each fiber type were determined in whole soleus ...

journal_title：Canadian journal of physiology and pharmacology

authors： Picquet F,De-Doncker L,Falempin M

更新日期：2004-05-01 00:00:00