Cardiac function of the diabetic renovascular hypertensive rat: effects of insulin and thyroid hormone treatment.

abstract：:Experiments in right atria isolated from adult male rats were designed to determine which of the alpha 1-adrenergic receptor (alpha 1-AR) subtypes are involved in the positive chronotropic effect of phenylephrine, an alpha 1-AR agonist. Chloroethylclonidine (CEC), an irreversible alpha 1b-, alpha 1c-, and alpha 1d-AR ...

journal_title：Canadian journal of physiology and pharmacology

authors： Williamson AP,Seifen E,Lindemann JP,Kennedy RH

更新日期：1994-12-01 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：:Several laboratories have reported ligand binding studies using radioactive histamine H1 antagonists to label the H1 receptors in mammalian brain. We have extended these studies to a detailed examination of the binding of [3H]mepyramine to monkey brain and have shown that the distribution is similar to that in man, wi...

journal_title：Canadian journal of physiology and pharmacology

authors： Bielkiewicz B,Cook DA

更新日期：1985-06-01 00:00:00

abstract：:We tested the effects of inhibiting the carbonic anhydrase activity of rat soleus and extensor digitorum longus muscles on the isometric contractile properties and the resistance to fatigue. SOL and EDL muscles from female rats were incubated in vitro in the presence of methazolamide, a specific inhibitor of carbonic ...

journal_title：Canadian journal of physiology and pharmacology

authors： Côté C,Tremblay D,Riverin H,Frémont P,Rogers PA

更新日期：1989-06-01 00:00:00

abstract：:To determine the effects of chronic hyperinsulinemia on glucagon release, rats were made hyperinsulinemic for 14 days by supplementation of drinking water with sucrose (10%; sucrose-fed) to increase endogenous release or by implantation of osmotic minipumps (subcutaneous, s.c.; or intraperitoneal, i.p.) to deliver exo...

journal_title：Canadian journal of physiology and pharmacology

authors： Brubaker PL,Kazumi T,Hirano T,Vranic M,Steiner G

更新日期：1991-03-01 00:00:00

abstract：:Metformin (MET) is widely used in the correction of insulin (INS) resistance and metabolic abnormalities in type 2 diabetes. However, its effect on INS resistance and metabolic disorders associated with cancer cachexia is not established. We investigated the MET effects, isolated or associated with INS, on INS resista...

journal_title：Canadian journal of physiology and pharmacology

authors： de Fatima Silva F,Ortiz-Silva M,Galia WBS,Cassolla P,da Silva FG,Graciano MFR,Carpinelli AR,de Souza HM

更新日期：2018-05-01 00:00:00

abstract：:The effects of two structurally similar pyrazine derivatives, tetramethylpyrazine (TMP) and tetraethylpyrazine (TEP) on the contractile responses of dog saphenous vein to KCl (via membrane depolarization), phenylephrine (PHE, alpha 1-adrenergic agonist), and B-HT 920 (alpha 2-adrenergic agonist) were investigated. The...

journal_title：Canadian journal of physiology and pharmacology

authors： Wang ZL,Kwan CY,Ohta A,Chen MC

更新日期：1991-08-01 00:00:00

abstract：:The endothelin receptors in rabbit isolated rings of saphenous artery and saphenous vein have been characterized using endothelin-1, endothelin-2, endothelin-3, sarafotoxin S6c, and BQ123. Although artery rings were more sensitive than those from vein to the contractile action of phenylephrine, endothelin-1 was about ...

journal_title：Canadian journal of physiology and pharmacology

authors： Auguet M,Delaflotte S,Chabrier PE,Braquet P

更新日期：1993-10-01 00:00:00

abstract：:The purpose of this study was to elucidate the mechanism whereby a potassium infusion led to an elevation in the urine minus blood (ohm-B) PCO2 difference in alkaline urine of the rabbit. Rabbits given 9alpha-fluorohydrocortisone 16 h prior to study had a significantly high olm-B PCO2 than control rabbits. However, th...

journal_title：Canadian journal of physiology and pharmacology

authors： Robson WL,Halperin ML,Stinebaugh BJ,Goldstein MB

更新日期：1981-03-01 00:00:00

abstract：:When isolated rat adipocytes were incubated with increasing concentrations of levamisole (0.5-5 mM), basal glucose oxidation decreased by almost 50% and insulin-stimulated glucose oxidation decreased by 90%. The decrease in glucose oxidation correlated with an inhibition of glucose transport, since levamisole at 5.0 m...

journal_title：Canadian journal of physiology and pharmacology

authors： Basi NS,Thomaskutty KG,Pointer RH

更新日期：1992-08-01 00:00:00

abstract：:In Western societies, the incidence of diet-related diseases is progressively increasing due to greater availability of hypercaloric food and a sedentary lifestyle. Obesity, diabetes, atherosclerosis, and neurodegeneration are major diet-related pathologies that share a common pathogenic denominator of low-grade infla...

journal_title：Canadian journal of physiology and pharmacology

authors： Magrone T,Perez de Heredia F,Jirillo E,Morabito G,Marcos A,Serafini M

更新日期：2013-06-01 00:00:00

abstract：:Microelectrode and mechanical studies were performed with isolated guinea pig myocardium (right ventricular free walls and papillary muscles) to examine the effects of platelet-activating factor (PAF) and lysophosphatidylcholine (LPC). Low concentrations of PAF (10(-8) to 10(-6) M, a range equivalent to the blood conc...

journal_title：Canadian journal of physiology and pharmacology

authors： Shigenobu K,Mori T,Kamata K,Kasuya Y

更新日期：1989-06-01 00:00:00

abstract：:Energy balance studies suggest that the overall efficiency of energy utilization does not increase during pregnancy in rodents, other than as a consequence of "hyperphagia". Diet-induced thermogenesis is not stimulated in response to the increased energy intake of the pregnant animal, the extra intake being retained a...

journal_title：Canadian journal of physiology and pharmacology

authors： Trayhurn P

更新日期：1989-04-01 00:00:00

abstract：:The area postrema (AP) is one of the circumventricular organs of the brain and as such it is highly vascular and lacks the normal blood-brain barrier. Anatomical tracing studies have demonstrated afferent projections to AP originating from the paraventricular nucleus, lateral parabrachial nucleus (l-PBN), nucleus trac...

journal_title：Canadian journal of physiology and pharmacology

authors： Ferguson AV

更新日期：1991-07-01 00:00:00

abstract：:Childhood cancer survivors can develop significant cardiac dysfunction in adulthood as a consequence of their cancer treatment. Studies have linked heart failure during pregnancy to childhood doxorubicin (DOX) exposure. We hypothesized that DOX injection would reduce cardiac function peripartum and that DOX-treated da...

journal_title：Canadian journal of physiology and pharmacology

authors： Calvé A,Noiles W,Sebag IA,Chalifour LE

更新日期：2012-11-01 00:00:00

abstract：:The present study investigates the antidiabetogenic effects of Murraya koenigii (L.) Spr. and Ocimum tenuflorum L. on streptozotocin-induced diabetic Swiss mice. Treatment with extracts of M. koenigii (chloroform; MKC) and O. tenuflorum (aqueous; OTA) resulted in proper glucose utilization with an increase in liver gl...

journal_title：Canadian journal of physiology and pharmacology

authors： Dusane MB,Joshi BN

更新日期：2012-03-01 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：:The mechanisms of the positive inotropic action of a new synthetic tetrahydroisoquinoline compound, SL-1, were investigated in isolated rat cardiac tissues and ventricular myocytes. SL-1 produced a rapidly developing, concentration-dependent positive inotropic response in both atrial and ventricular muscles and a nega...

journal_title：Canadian journal of physiology and pharmacology

authors： Chang GJ,SU MJ,Lee PH,Lee SS,Liu KC

更新日期：1995-11-01 00:00:00

abstract：:The measurement of the sodium reversal potential (Erev), as that potential where the early current reverses during voltage clamp, was found to exceed the true Erev by 4.1 +/- 2.4 mV (mean +/- SD) in squid giant axon. This error was found in both intact and internally perfused axons and is due to interference from the ...

journal_title：Canadian journal of physiology and pharmacology

authors： Wodlinger H,Kunov H,Atwood HL

更新日期：1982-12-01 00:00:00

abstract：:The guanylin family of peptides has 3 subclasses of peptides containing either 3 intramolecular disulfide bonds found in bacterial heat-stable enterotoxins (ST), or 2 disulfides observed in guanylin and uroguanylin, or a single disulfide exemplified by lymphoguanylin. These peptides bind to and activate cell-surface r...

journal_title：Canadian journal of physiology and pharmacology

authors： Fonteles MC,do Nascimento NR

更新日期：2011-08-01 00:00:00

abstract：:The present study was conducted to evaluate the local antinociceptive actions of fluoxetine, a selective serotonin reuptake inhibitor, and the possible involvement of the l-arginine/NO/cGMP/KATP channel pathway in this effect using the formalin test in rats. To elucidate the underlying mechanisms, animals were pre-tre...

journal_title：Canadian journal of physiology and pharmacology

authors： Ghorbanzadeh B,Mansouri MT,Naghizadeh B,Alboghobeish S

更新日期：2018-02-01 00:00:00

abstract：:A survey of 'steady-state' serum levels of anticonvulsant drugs from 221 epileptic patients at a university hospital was conducted. Serum concentrations of phenobarbital, primidone, and diphenylhydantoin were determined by a gas chromatographic method. Sixty-five percent (130) of the patients receiving diphenylhydanto...

journal_title：Canadian journal of physiology and pharmacology

authors： Davis HL,Bailey DG,Johnson GE,Wilson TW

更新日期：1976-12-01 00:00:00

abstract：:The connections of area postrema include a set of nuclei with a common topographical location immediately deep to the ependyma or pia mater. These nuclei are all within two principal synapses of the area postrema and can be reached by more than one route from it. There is direct evidence that, like the area postrema, ...

journal_title：Canadian journal of physiology and pharmacology

authors： Lawes IN

更新日期：1990-02-01 00:00:00

abstract：:The isometric contractile properties of frog (Rana pipiens) and toad (Bufo bufo) sartorii have been studied over the temperature range from 0 to 20 degrees C. The isometric twitch tension was found to vary considerably between these two species and between muscles in the same species. Between 0 and 4 degrees C there w...

journal_title：Canadian journal of physiology and pharmacology

authors： Bressler BH

更新日期：1981-06-01 00:00:00

abstract：:Cardiac dysfunction due to ischemia-reperfusion (I/R) is associated with marked changes in membrane function and subsequent Ca2+-handling abnormalities in cardiomyocytes. The membrane abnormalities in hearts subjected to I/R arise primarily from oxidative stress as a consequence of increased formation of reactive oxyg...

journal_title：Canadian journal of physiology and pharmacology

authors： Tappia PS,Asemu G,Rodriguez-Leyva D

更新日期：2010-03-01 00:00:00

abstract：:Both gonadotropin-releasing hormone (GnRH) and prostaglandin F2 alpha (PGF2 alpha) can inhibit cAMP and progesterone production in the corpus luteum; however, their mechanism of action is not known. GnRH or PGF2 alpha causes a rapid and marked increase of labelling of phosphatidylinositol (PI) and phosphatidic acid (P...

journal_title：Canadian journal of physiology and pharmacology

authors： Leung PC

更新日期：1985-03-01 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：:Mepivacaine is an aminoamide local anesthetic with an intermediate duration that intrinsically produces vasoconstriction both in vivo and in vitro. This study investigated the arachidonic acid metabolic pathways involved in mepivacaine-induced contraction, and elucidated the associated cellular mechanism with a partic...

journal_title：Canadian journal of physiology and pharmacology

authors： Lee HM,Ok SH,Sung HJ,Eun SY,Kim HJ,Lee SH,Kang S,Shin IW,Lee HK,Chung YK,Choi MJ,Bae SI,Sohn JT

更新日期：2013-04-01 00:00:00

abstract：:The validity of a Hodgkin-Huxley type voltage-dependent inactivation of slow inward Ca current (Isi) was tested in frog heart using a computer simulation. The time course of Isi was calculated during the development of a frog atrial action potential (AP). With a time constant of inactivation (tauf) of 55 ms at a membr...

journal_title：Canadian journal of physiology and pharmacology

authors： Fischmeister R,Horackova M

更新日期：1982-09-01 00:00:00

abstract：:Phosphorylation of the regulatory light chain of myosin catalyzed by myosin light-chain kinase (MLCK) is the key reaction in the regulation of actin-myosin interaction in smooth muscle. It is shown that this reaction is of an ordered type, whereby kinase first binds ATP and then the light chain, and following phosphat...

journal_title：Canadian journal of physiology and pharmacology

authors： Sobieszek A

更新日期：1994-11-01 00:00:00