Epileptiform seizures in domestic fowl. IX. Implications of the absence of anticonvulsant activity of ethosuximide in a pharmacological model of epilepsy.

abstract：:Nitric oxide (NO) production occurs through oxidation of the amino acid L-arginine by NO synthase (NOS). NO inhibits platelet activation by increasing the levels of cyclic guanosine monophosphate (cGMP), thus maintaining vascular homeostasis. Our group previously demonstrated (da Silva et al. 2005) an enhancement of t...

journal_title：Canadian journal of physiology and pharmacology

authors： Siqueira MA,Brunini TM,Pereira NR,Martins MA,Moss MB,Santos SF,Lugon JR,Mendes-Ribeiro AC

更新日期：2011-02-01 00:00:00

abstract：:Neural and paracrine agents, such as dopamine, epinephrine, and histamine, affect intestinal epithelial function, but it is unclear if these agents act on receptors directly at the enterocyte level. The cellular localization and villus-crypt distribution of adrenergic, dopamine, and histamine receptors within the inte...

journal_title：Canadian journal of physiology and pharmacology

authors： Baglole CJ,Davison JS,Meddings JB

更新日期：2005-05-01 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 purpose of this study was to explore the protective effect of BW373U86 (a δ-opioid receptor (DOR) agonist) on ischemia-reperfusion (I/R) injury in rat cardiomyocytes and its underlying mechanism. Primary rat cardiomyocytes were cultured and pretreated with BW373U86 for intervention. The cardiomyocytes were culture...

journal_title：Canadian journal of physiology and pharmacology

authors： Liang Q,Huang X,Zeng C,Li D,Shi Y,Zhao G,Zhong M

更新日期：2020-10-01 00:00:00

abstract：:In experiments on isolated guinea pig papillary muscles the effects of verapamil (5 mg/L) and caffeine (1 g/L) on the two-component contraction were investigated. The muscles were continuously superfused with normal Tyrode's solution containing 2 mg of noradrenaline/L at 20--22 degrees C. The first derivative of contr...

journal_title：Canadian journal of physiology and pharmacology

authors： Bogdanov KY,Zakharov SI,Rosenshtraukh LV

更新日期：1979-08-01 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：:The mesenteric vascular bed preparation of control and pinealectomized (PX) male Wistar rats was used to examine vascular reactivity to two concentrations each of norepinephrine, serotonin, angiotensin, and potassium. Vasoconstrictor responses to 50- and 100-ng injections of norepinephrine and 0.5- and 1.0-microgram i...

journal_title：Canadian journal of physiology and pharmacology

authors： Cunnane SC,Manku MS,Oka M,Horrobin DF

更新日期：1980-03-01 00:00:00

abstract：:This Symposium includes 15 presentations and an editorial review dealing with prorenin activation and function. It comes 20 years after prorenin was first reported in various contexts and attracted attention because of its connection with renin--angiotensin, its high concentration relative to renin in the blood, and i...

journal_title：Canadian journal of physiology and pharmacology

authors： Osmond DH,Sealey JE,McKenzie JK

更新日期：1991-09-01 00:00:00

abstract：:Malnutrition and inflammation are associated with end-stage renal disease (ESRD). Interleukin (IL)-6 and tumor necrosis factor alpha (TNF-alpha) powerfully predict death from cardiovascular disease. The aim of our study was to establish an association between markers of inflammation and parameters of malnutrition in p...

journal_title：Canadian journal of physiology and pharmacology

authors： Perunicic-Pekovic G,Pljesa S,Rasic-Milutinovic Z,Stankovic S,Ilic M,Maletic R

更新日期：2008-04-01 00:00:00

abstract：:Tea is perceived as more relaxing than coffee, even though both contain caffeine. L-theanine in tea may account for the difference. Consumed together, caffeine and theanine exert similar cognitive effects to that of caffeine alone, but exert opposite effects on arousal, in that caffeine accentuates and theanine mitiga...

journal_title：Canadian journal of physiology and pharmacology

authors： Giles GE,Mahoney CR,Brunyé TT,Taylor HA,Kanarek RB

更新日期：2017-01-01 00:00:00

abstract：:Plasma and serum of healthy subjects apparently contain a precursor form of renin, or 'prorenin,' which can be activated by the ice-cold temperature at which samples are customarily handled for prolonged periods in laboratories and blood banks. The effect of such prior cryoactivation for 9 days at 4 degrees C is to in...

journal_title：Canadian journal of physiology and pharmacology

authors： Osmond DH,Cooper RM

更新日期：1978-10-01 00:00:00

abstract：:Caffeine has been reported to have a positive and (or) a negative inotropic effect on cardiac muscle. In this study, the force-frequency and postrest characteristics of rat atrium were studied in the presence of caffeine (1.0-10 mM) to see if the interval between beats affected the response of cardiac muscle to caffei...

journal_title：Canadian journal of physiology and pharmacology

authors： MacIntosh BR,Posner P,Lobo J,Harms R

更新日期：1992-02-01 00:00:00

abstract：:We characterized the innervation of isolated circular and longitudinal-oriented muscle strips from the nulliparous rabbit uterus and cervix by field stimulation (FS). FS with increasing frequency (2.5-50 pps) and voltage (2.5-70 V) caused graded increases in isometric contraction with no relaxation or inhibition of sp...

journal_title：Canadian journal of physiology and pharmacology

authors： Bulat R,Kannan MS,Garfield RE

更新日期：1989-08-01 00:00:00

abstract：:The effects of haloperidol, an antipsychotic butyrophenone, on excitability and action potential production in frog's sartorius muscle fibers were studied. This drug produced a local-anestheticlike effect which developed slowly over 1 to 5 h with lower concentrations (2.7 to 5.3 X 10(-6 M) but was completely reversed ...

journal_title：Canadian journal of physiology and pharmacology

authors： Durham HD,Frank GB,Marwaha J

更新日期：1977-06-01 00:00:00

abstract：:It has been proposed that the adult castrated male rat may be used as a model of human postmenopausal osteoporosis. If such a model is valid then the total body calcium of castrated rats should progressively decrease compared with normal rats. To search for this age-related difference, it will be necessary to use a me...

journal_title：Canadian journal of physiology and pharmacology

authors： Beachey DJ,Wickham M,Webber CE

更新日期：1985-10-01 00:00:00

abstract：:G protein-coupled receptors (GPCRs), including endothelin receptor A (ETA) and B (ETB), may form dimers or higher-order oligomers that profoundly influence signaling. Here we examined a PDZ finger motif within the C-terminus of ETA and its role in heterodimerization with ETB, and in homodimerization with itself, when ...

journal_title：Canadian journal of physiology and pharmacology

authors： Evans NJ,Walker JW

更新日期：2008-08-01 00:00:00

abstract：:Geniposide (GP) is one of main compounds in Gardenia jasminoides Ellis, with both medicinal and nutritional value. This study was designed to determine, for the first time, how GP from G. jasminoides protects against acute alcohol-induced liver injury, and the underlying mechanisms. Mice were orally administered alcoh...

journal_title：Canadian journal of physiology and pharmacology

authors： Wang J,Zhang Y,Liu R,Li X,Cui Y,Qu L

更新日期：2015-04-01 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：:Electrophysiological studies were performed on slowly adapting cells of the crayfish (Astacus astacus) stretch receptor to examine some aspects of the operation of the sodium pump. Intracellular sodium activity (aiNa) and pH (pHi) were measured with liquid ion exchanger microelectrodes and the effects of NH3/NH+4 were...

journal_title：Canadian journal of physiology and pharmacology

authors： Moser H

更新日期：1987-02-01 00:00:00

abstract：:A single-compartment model used in this laboratory for continuously calculating ACTH secretion rates from measured plasma ACTH concentrations has been tested for its ability to follow changing rates of ACTH entry (rapid departure from steady state). ACTH was infused at known moderately high but physiological rates int...

journal_title：Canadian journal of physiology and pharmacology

authors： Cowan JS

更新日期：1978-06-01 00:00:00

abstract：:Eight pure triterpenoid saponin compounds isolated from the root of Polygala senega L., a plant indigenous to the Canadian prairies, were evaluated for their immunological activity in mouse models. The specific antibody responses of the IgG2a subclass increased significantly when isolated P. senega saponins were used ...

journal_title：Canadian journal of physiology and pharmacology

authors： Katselis GS,Estrada A,Gorecki DK,Barl B

更新日期：2007-11-01 00:00:00

abstract：:Alterations in electrical conductivity between smooth muscle cells (SMCs) can alter the spread and effectiveness of electromechanical SMC contraction. We attempted to determine whether alterations in pressure-dependent constriction (PDC) occurring in relation to stroke development within the middle cerebral arteries (...

journal_title：Canadian journal of physiology and pharmacology

authors： Smeda JS,King SR

更新日期：1998-02-01 00:00:00

abstract：:Hormonal replacement therapy (HRT) has failed to provide a cardioprotective action in postmenopausal women, and thus alternative pharmacological approaches are required. The present study examined the therapeutic potential of the partial estrogen receptor agonist tamoxifen and the angiotensin II type-1 receptor antago...

journal_title：Canadian journal of physiology and pharmacology

authors： Pham-Dang ML,Clement R,Mercier I,Calderone A

更新日期：2003-09-01 00:00:00

abstract：:The volatile oil (VO), extracted from the stems of Schisandra chinensis Baill. (SCS), was separated and identified by gas chromatography - mass spectrometry. The study was devised to investigate the effects of VO on oxidative stress and cognitive deficits induced by amyloid-β (Aβ(1-42)). Alzheimer's disease (AD) model...

journal_title：Canadian journal of physiology and pharmacology

authors： Yang B,Liu B,Liu Y,Han H,Kuang H

更新日期：2018-06-01 00:00:00

abstract：:Sensorimotor mechanisms were studied on the basis of kinematic and electromyographic data as well as the static torque developed by the muscles as a function of joint angle. The latter relationship is known as the torque/angle characteristic. Fast single-joint movement may result from a shift in this characteristic an...

journal_title：Canadian journal of physiology and pharmacology

authors： Levin MF,Lamarre Y,Feldman AG

更新日期：1995-02-01 00:00:00

abstract：:Lesion to the posterior parietal cortex in monkeys and humans produces spatial deficits in movement and perception. In recording experiments from area 7a, a cortical subdivision in the posterior parietal cortex in monkeys, we have found neurons whose responses are a function of both the retinal location of visual stim...

journal_title：Canadian journal of physiology and pharmacology

authors： Andersen RA,Zipser D

更新日期：1988-04-01 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：:Guanine nucleotide binding proteins (G proteins) are largely grouped into three classes: heterotrimeric G proteins, ras-like or small molecular weight GTP binding proteins, and others like Gh. In the heart G proteins transduce signals from a variety of membrane receptors to generate diverse effects on contractility, h...

journal_title：Canadian journal of physiology and pharmacology

authors： Zolk O,Kouchi I,Schnabel P,Böhm M

更新日期：2000-03-01 00:00:00

abstract：:The effect of sex hormones on vascular reactivity is considered one of the underlying factors contributing to gender differences in cardiovascular functions and diseases. Experiments were designed to investigate the role of androgens in salt-induced hypertension by assessing the relaxation response of isolated aortic ...

journal_title：Canadian journal of physiology and pharmacology

authors： Oloyo AK,Sofola OA,Anigbogu CN

更新日期：2011-04-01 00:00:00

abstract：:We investigated the effects of 4% fructose plus moderately high salt (MHS) (4% NaCl) treatment on tissue aldehyde conjugates, platelet cytosolic free calcium ([Ca2+]i), renal morphology, and systolic blood pressure (SBP) in Wistar-Kyoto rats, and whether these effects were reversible (R) after withdrawal of treatment....

journal_title：Canadian journal of physiology and pharmacology

authors： Vasdev S,Gill V,Parai S,Gadag V

更新日期：2007-03-01 00:00:00