Characterization of the inotropic response induced by stimulation of beta-adrenergic and H1 histaminergic receptors in guinea pig left atria.

abstract：:The intraperitoneal administration of insulin has been recommended because it was found to effectively control the plasma glucose level. Several authors have suggested that intraperitoneal insulin administration may be more "physiological" and therefore preferable because the insulin is absorbed into the portal venous...

journal_title：Canadian journal of physiology and pharmacology

authors： Zingg W,Rappaport AM,Leibel BS

更新日期：1986-03-01 00:00:00

abstract：:Lumbar spine and mid-radius bone mineral density was measured repeatedly in 48 postmenopausal women who completed 7 years of taking either a 500 mg x day(-1) calcium supplement (n = 22) or calcium supplementation with hormone replacement therapy. The hormone replacement was either a low dose (n = 15) or a moderate dos...

journal_title：Canadian journal of physiology and pharmacology

authors： Blake JM,Ryan ED,Beaumont LF,Webber CE

更新日期：1999-07-01 00:00:00

abstract：:To investigate the capacity of efferent sympathetic neurons to modulate the failing heart, stellate ganglion stimulation was performed in dogs with biventricular heart failure induced by rapid ventricular pacing (240 beats/min) for 4-6 weeks. Less noradrenaline was released from cardiac myoneural junctions into corona...

journal_title：Canadian journal of physiology and pharmacology

authors： Cardinal R,Nadeau R,Laurent C,Boudreau G,Armour JA

更新日期：1996-09-01 00:00:00

abstract：:The hypocalcaemic action of ethanol (3 g/kg body weight) was investigated in intact, thyroparathyroidectomized and antrectomized rats. It was found that ethanol administered either intraperitoneally or orally reduced plasma calcium concentrations within 30 min and that this response lasted for 8 h. Additional studies ...

journal_title：Canadian journal of physiology and pharmacology

authors： Krishnamra N,Limlomwongse L

更新日期：1983-04-01 00:00:00

abstract：:Lingonberry grown in northern Manitoba, Canada, contains exceptionally high levels of anthocyanins and other polyphenols. Previous studies from our lab have shown that lingonberry anthocyanins can protect H9c2 cells from ischemia-reperfusion injury and anthocyanin-rich diets have been shown to be associated with decre...

journal_title：Canadian journal of physiology and pharmacology

authors： Isaak CK,Petkau JC,Blewett H,O K,Siow YL

更新日期：2017-08-01 00:00:00

abstract：:Selected topics on the roles of sarcoplasmic reticulum (SR) in the control of vascular smooth muscle (VSM) tone are briefly reviewed with particular reference to the regulation of cytosolic concentration of free calcium ions, [Ca2+]i. Although morphological evidence and subcellular membrane studies indicate a relative...

journal_title：Canadian journal of physiology and pharmacology

authors： Daniel EE,van Breemen C,Schilling WP,Kwan CY

更新日期：1995-05-01 00:00:00

abstract：:The role of leukotriene D4 (LTD4) as a mediator of immediate hypersensitivity reactions in the guinea-pig conjunctiva was examined using a potent, second-generation LTD4 receptor antagonist, MK-571 (also known as L-660,711). The microvascular permeability changes in the guinea-pig conjunctiva following challenge with ...

journal_title：Canadian journal of physiology and pharmacology

authors： Chan CC,Dagenais F,Firby P,Foster A,Ford-Hutchinson AW

更新日期：1989-08-01 00:00:00

abstract：:The leaves and bark of Cassia glauca Lam., a glabrous tree in the family Fabaceae, are used in folk medicine for the treatment of diabetes. The aim of this study was to investigate the antidiabetic activity of the aqueous extract of C. glauca bark. The various parameters that were studied in treated or untreated normo...

journal_title：Canadian journal of physiology and pharmacology

authors： Salahuddin M,Jalalpure SS,Gadge NB

更新日期：2010-02-01 00:00:00

abstract：:Blood pressure fluctuates continuously throughout life and autoregulation is the primary mechanism that isolates the kidney from this fluctuation. Compared with Wistar rats, Brown Norway (B-N) rats display impaired renal myogenic autoregulation when blood pressure fluctuation is increased. They also are very susceptib...

journal_title：Canadian journal of physiology and pharmacology

authors： Wang X,Cupples WA

更新日期：2001-03-01 00:00:00

abstract：:In both isolated canine ventricular trabecular muscle and Purkinje strand preparations, dl-sotalol and its two optical isomers d- and l-sotalol produced a concentration-dependent increase in action potential duration while other transmembrane electrical characteristics were not significantly affected. The magnitude of...

journal_title：Canadian journal of physiology and pharmacology

authors： Lathrop DA

更新日期：1985-12-01 00:00:00

abstract：:Most physiological and pathophysiological responses to bradykinin are mediated by G-protein-coupled receptors designated B2 receptors. Discovery of antagonists for these receptors has brought about a revolution in research in the kinin field. The chemistry and development of antagonists for B2 kinin receptors are disc...

journal_title：Canadian journal of physiology and pharmacology

authors： Stewart JM

更新日期：1995-07-01 00:00:00

abstract：:The effect of estrogen on the passive characteristics of arteries is not known. We hypothesized that estrogen would increase arterial distensibility as part of its protective effect on the vasculature. Female Sprague-Dawley rats were ovariectomized at 11 weeks of age. One group received a placebo (n = 6), while two ot...

journal_title：Canadian journal of physiology and pharmacology

authors： Zhang Y,Davidge ST

更新日期：1999-01-01 00:00:00

abstract：:The metabolism of endogenous and exogenous diacylglycerol (DG) was studied in SM-3 cells derived from rabbit aortic smooth muscle to determine the biochemical step(s) responsible for degrading DG second messengers. Incubation of growth-arrested SM-3 cells with [3H]myristate for 2 h resulted in selective labelling of c...

journal_title：Canadian journal of physiology and pharmacology

authors： Migas I,Chuang M,Sasaki Y,Severson DL

更新日期：1997-10-01 00:00:00

abstract：:The aryl hydrocarbon receptor (AHR) has physiological roles in the absence of exposure to exogenous ligands, and mediates adaptive and toxic responses to the environmental pollutant 2,3,7,8-tetracholorodibenzo-p-dioxin (TCDD). A readily metabolized AHR agonist, 3-methylcholanthrene, disrupts the expression of mouse he...

journal_title：Canadian journal of physiology and pharmacology

authors： Lee C,Riddick DS

更新日期：2012-10-01 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：:The effects of lithium chloride on ornithine decarboxylase (ODC) activity were compared in the adrenal and kidney of control (saline treated) and prolactin-treated rats. ODC activity was decreased in kidney of both groups of animals, the magnitude of the effect of lithium in the hormone-treated group varying with the ...

journal_title：Canadian journal of physiology and pharmacology

authors： Strümpfer A,Hsiao J,Peng T,Richards J

更新日期：1992-09-01 00:00:00

abstract：:Chronic caval dogs with ascites were identified as being natriuretic "responders" or "nonresponders" (delta UNaV less than 20 microequiv./min) following an infusion of atrial natriuretic peptide (ANP) (100 ng.kg-1.min-1). To learn more about the factors modulating tubular resistance to ANP, we attempted to convert res...

journal_title：Canadian journal of physiology and pharmacology

authors： Legault L,Cernacek P,Levy M

更新日期：1992-06-01 00:00:00

abstract：:The presence of different receptor populations within a given brain area can be effectively evaluated via the local injections of defined receptor agonists and antagonists. Using this approach, it has become evident that the nucleus basalis - cortical cholinergic pathway possesses an inhibitory GABAergic input to the ...

journal_title：Canadian journal of physiology and pharmacology

authors： Wood PL

更新日期：1986-03-01 00:00:00

abstract：:Hydroxytyrosol (HT), a phenolic compound in olive oil, exerts an anti-inflammatory effect in cardiovascular diseases. Recent studies found that autophagy was a therapeutic target of diseases. However, the effect of HT on autophagy in vascular adventitial fibroblasts (VAFs) remains unknown. Thus, in this study, we aime...

journal_title：Canadian journal of physiology and pharmacology

authors： Wang W,Jing T,Yang X,He Y,Wang B,Xiao Y,Shang C,Zhang J,Lin R

更新日期：2018-01-01 00:00:00

abstract：:Atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) are cardiac hormones synthesized in and secreted from the heart. ANP and BNP bind the common receptor guanylyl cyclase-A (GC-A) and possess biological actions. Based on their diuretic, natriuretic, and vasodilating activities, they are now widely us...

journal_title：Canadian journal of physiology and pharmacology

authors： Saito Y,Kishimoto I,Nakao K

更新日期：2011-08-01 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：:Delta 9-Tetrahydrocannabinol (20 mg/kg i.p.) and propranolol (20 and 50 mg/kg i.p.) produced marked falls in the rectal temperatures of mice kept at an ambient temperature of 22 degrees C. Propranolol (50 mg/kg i.p.) also decreased the thermogenic activity of brown fat, as measured by a decrease in the level of [3H]GD...

journal_title：Canadian journal of physiology and pharmacology

authors： Pertwee RG,Nash K,Trayhurn P

更新日期：1991-06-01 00:00:00

abstract：:The effects of gallopamil, D600, a methoxy derivative of verapamil, on the mechanical and electrophysiological parameters of isolated guinea-pig myocardial preparations were compared with those of verapamil. Both gallopamil and verapamil produced concentration-dependent negative chronotropic and negative inotropic eff...

journal_title：Canadian journal of physiology and pharmacology

authors： Noguchi K,Masumiya H,Takahashi K,Kaneko K,Higuchi S,Tanaka H,Shigenobu K

更新日期：1997-12-01 00:00:00

abstract：:We investigated whether cell-to-cell coupling between myometrial cells of parturient rats is influenced by intracellular adenosine 3',5'-cyclic monophosphate (cAMP) concentration. To evaluate the coupling, we measured input resistance (Ro) and injected Lucifer Yellow (LY) using microelectrode techniques. The intercell...

journal_title：Canadian journal of physiology and pharmacology

authors： Sakai N,Blennerhassett MG,Garfield RE

更新日期：1992-03-01 00:00:00

abstract：:The effects of neurokinins (NK) and related peptides on the secretion of 6-keto-prostaglandin F1 alpha, a stable metabolite of prostacyclin, were measured. These peptides enhanced three- to five-fold the basal secretion rate with the following rank order of potency (based on threshold concentrations for a significant ...

journal_title：Canadian journal of physiology and pharmacology

authors： Marceau F,Tremblay B,Couture R,Regoli D

更新日期：1989-02-01 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：:Steady state glucose kinetics were measured in 19 premature and 16 full-term piglets. Bodyweight, plasma glucose concentration, total body glucose turnover rate, and glucose pool size were not significantly different between the two groups. This suggests that the premature piglet is capable of maintaining glucose home...

journal_title：Canadian journal of physiology and pharmacology

authors： Flecknell PA,Wootton R,John M,Royston JP

更新日期：1981-10-01 00:00:00

abstract：:The direct effects of extrinsic nerve stimulation on coronary artery tone are unclear because of the complications arising from alterations in myocardial dynamics which themselves alter flow. An isolated and perfused nonbeating slab of beef ventricle was utilized in the present experiments to eliminate secondary compl...

journal_title：Canadian journal of physiology and pharmacology

authors： Kalsner S

更新日期：1979-03-01 00:00:00

abstract：:The development of cardiac hypertrophy was examined in rats given ethanol in a nutritionally adequate, liquid diet mixture, by intubation, in severely intoxicating doses at 8-h intervals for up to 96 h, alone or in combination with prazosin. Other groups of rats received isocalorically paired quantities of maltose-dex...

journal_title：Canadian journal of physiology and pharmacology

authors： Adams MA,Hirst M

更新日期：1989-03-01 00:00:00

abstract：:H2S is an important gasotransmitter with a vasorelaxant property. The modulation of endogenous H2S generation from different tissues and the functional consequence of this modulation are not clear. In the present study, the production of H2S from vascular tissues as well as the liver and ileum of rats was measured. Th...

journal_title：Canadian journal of physiology and pharmacology

authors： Zhao W,Ndisang JF,Wang R

更新日期：2003-09-01 00:00:00