The role of the Na+/Ca2+ exchanger, I(Na) and I(CaL) in the genesis of dofetilide-induced torsades de pointes in isolated, AV-blocked rabbit hearts.

abstract：:1. This study analyses the neural pathway involved in the modulation of gastric motor function by stress. 2. Systemic administration of low doses of endotoxin (40 microg kg(-1), i.v.) prevents the increase in gastric tone induced by 2-deoxy-D-glucose (200 mg kg(-1), i.v., 2-DG) in urethane-anaesthetized rats. 3. Funct...

journal_title：British journal of pharmacology

authors： Quintana E,García-Zaragozá E,Martínez-Cuesta MA,Calatayud S,Esplugues JV,Barrachina MD

更新日期：2001-09-01 00:00:00

abstract：:1 Adenosine 5'-triphosphate (ATP) is an enteric neurotransmitter which acts at purine receptors on intestinal nerve and muscle. This study set out to shed light on the receptor mechanisms by which exogenous and endogenous ATP influences intestinal peristalsis. 2 Peristalsis in isolated segments of the guinea-pig small...

journal_title：British journal of pharmacology

authors： Heinemann A,Shahbazian A,Barthó L,Holzer P

更新日期：1999-09-01 00:00:00

abstract：:1. The inhibitory effect of caffeine on the calcium channel current was investigated in cultured myometrial cells isolated from pregnant rats. 2. Caffeine inhibited the calcium channel current elicited from a holding potential of -70 mV in a concentration-dependent manner. The IC50 was estimated to be 35 mM. 3. The ca...

journal_title：British journal of pharmacology

authors： Martin C,Dacquet C,Mironneau C,Mironneau J

更新日期：1989-10-01 00:00:00

abstract：:1 N-2-Chlorethyl-N-ethyl-2-bromobenzylamine hydrochloride (DSP 4) 50 mg/kg intraperitoneally, produced a long-term decrease in the capacity of brain homogenates to accumulate noradrenaline with significant effect 8 months after the injection. It had no effect on the noradrenaline uptake in homogenates from the striatu...

journal_title：British journal of pharmacology

authors： Ross SB

更新日期：1976-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:P2X(7), receptors are potently inhibited by extracellular acidification. The underlying molecular basis remains unknown. This study aimed to examine the role of extracellular histidine, lysine, aspartic acid and glutamic acid residues in the functional inhibition of rat P2X(7) receptors by acidic...

journal_title：British journal of pharmacology

authors： Liu X,Ma W,Surprenant A,Jiang LH

更新日期：2009-01-01 00:00:00

abstract：:The concentrations of catecholamines and the activities of dopamine-beta-hydroxylase were measured in blood obtained from decapitated diabetic and aged-matched control rats. The activity of dopamine-beta-hydroxylase in blood from diabetic rats was much greater (5 fold) than that seen for control rats. For both diabeti...

journal_title：British journal of pharmacology

authors： Berkowitz BA,Head RJ

更新日期：1978-09-01 00:00:00

abstract：BACKGROUND AND PURPOSE:While selective, bitter tasting, TAS2R agonists can relax agonist-contracted airway smooth muscle (ASM), their mechanism of action is unclear. However, ASM contraction is regulated by Ca²⁺ signalling and Ca²⁺ sensitivity. We have therefore investigated how the TAS2R10 agonists chloroquine, quinin...

journal_title：British journal of pharmacology

authors： Tan X,Sanderson MJ

更新日期：2014-02-01 00:00:00

abstract：:Adrenergic transmission was investigated in the dog mesenteric vein by recording electrical responses of single smooth muscle cells to perivascular nerve stimulation. Perivascular nerve stimulation generated an excitatory junction potential (e.j.p.) and a slow depolarization of the membrane. The amplitude of the e.j.p...

journal_title：British journal of pharmacology

authors： Suzuki H

更新日期：1984-03-01 00:00:00

abstract：:1. The pharmacological characteristics of RP 67580, a non-peptide tachykinin NK1 receptor antagonist, and its effects on a reflex response evoked by stimulation of primary afferent fibres, were examined in isolated neonatal spinal cord preparations of the rat. Potentials were recorded extracellularly from a lumbar ven...

journal_title：British journal of pharmacology

authors： Hosoki R,Yanagisawa M,Guo JZ,Yoshioka K,Maehara T,Otsuka M

更新日期：1994-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:In cardiac myocytes, cAMP produced by both β1 and β2 -adrenergic receptors (ARs) results in an increase in L-type Ca2+ channel activity and myocyte contraction. However, only cAMP produced by β1 ARs is able to enhance myocyte relaxation through phospholamban-dependent regulation of the sarco/endo...

journal_title：British journal of pharmacology

authors： Rudokas MW,Post JP,Sataray-Rodriguez A,Sherpa RT,Moshal KS,Agarwal SR,Harvey RD

更新日期：2021-01-21 00:00:00

abstract：:1. Studies in rats suggest that PACAP modulates gastric acid secretion through the release of both histamine and somatostatin. 2. We characterized the effects of exogenous PACAP on gastric acid secretion in urethane-anesthetized mice implanted with a gastric cannula and in conscious 2-h pylorus ligated mice, and deter...

journal_title：British journal of pharmacology

authors： Piqueras L,Taché Y,Martínez V

更新日期：2004-05-01 00:00:00

abstract：:1. The modification by Bay K 8644 of the vasodilator effects of nifedipine, diltiazem, nicorandil and nitroglycerin was investigated in the femoral arterial bed of anaesthetized dogs. 2. The right femoral artery was cannulated and its arterial bed was perfused with autologous blood at a constant pressure slightly high...

journal_title：British journal of pharmacology

authors： Sato Y,Ishii K,Taira N

更新日期：1988-01-01 00:00:00

abstract：:1. The present experiments were designed to investigate the role of local angiotensin II receptors in the myointimal proliferative response of the vascular wall after endothelial removal, by use of a novel, nonpeptide, angiotensin II receptor antagonist, losartan. 2. When administered 1 week before endothelial removal...

journal_title：British journal of pharmacology

authors： Azuma H,Niimi Y,Hamasaki H

更新日期：1992-07-01 00:00:00

abstract：:1. The present experiments were designed to investigate the mechanisms causing intimal hyperplasia in connection with the impaired synergism between prostaglandin I2 (PGI2) and nitric oxide (NO) in human uterine arteries (UAs). 2. In order to assess the magnitude of intimal hyperplasia, the intima:media ratio (%) was ...

journal_title：British journal of pharmacology

authors： Obayashi S,Aso T,Sato J,Hamasaki H,Azuma H

更新日期：1996-11-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Idiopathic pulmonary fibrosis (IPF) is a progressive fibro-proliferative disorder refractory to current therapy commonly complicated by the development of pulmonary hypertension (PH); the associated morbidity and mortality are substantial. Natriuretic peptides possess vasodilator and anti-fibroti...

journal_title：British journal of pharmacology

authors： Baliga RS,Scotton CJ,Trinder SL,Chambers RC,MacAllister RJ,Hobbs AJ

更新日期：2014-07-01 00:00:00

abstract：:1. The effects of the intravenous injection of Kö 1173, a new anticonvulsant drug, phenytoin and procainamide were studied on three types of cardiac arrhythmia in dogs.2. Ventricular ectopic beats produced by intravenous injection of adrenaline in anaesthetized dogs respired with halothane were abolished by Kö 1173, 0...

journal_title：British journal of pharmacology

authors： Allen JD,Ekue JM,Shanks RG,Zaidi SA

更新日期：1972-08-01 00:00:00

abstract：:1 The primary aim was to study the central respiratory effects of cannabinoids (CB). To this end, the cannabinoid receptor agonist WIN55212-2 was injected into the cisterna magna of urethane-anaesthetised rats and changes in respiratory parameters were observed. The secondary aim was to observe the centrally elicited ...

journal_title：British journal of pharmacology

authors： Pfitzer T,Niederhoffer N,Szabo B

更新日期：2004-07-01 00:00:00

abstract：:1. Noradrenaline 1 microM induced a contractile response in rat isolated aorta in the presence or in the absence of extracellular Ca2+ with depletion of intracellular Ca2+ stores. Thereafter, during incubation in the presence of Ca2+, an increase in the resting tone was observed. Such a contractile response did not oc...

journal_title：British journal of pharmacology

authors： Noguera MA,D'Ocon MP

更新日期：1993-10-01 00:00:00

abstract：:1. Elevated plasminogen activator inhibitor 1 (PAI-1) is a risk factor for thrombosis, and inhibitors of the interaction between PAI-1 and tissue plasminogen activator (t-PA) have antithrombotic and prothrombolytic activity in animals. We describe the antithrombotic effects in the rat of a monoclonal antibody (MA33H1)...

journal_title：British journal of pharmacology

authors： Berry CN,Lunven C,Lechaire I,Girardot C,O'Connor SE

更新日期：1998-09-01 00:00:00

abstract：:In the clinic, low efficacy positive GABAA modulators might be preferred to high efficacy positive modulators insofar as low efficacy modulators might have comparatively less abuse and dependence liability. Drug discrimination was used to examine the behavioral effects of L-838,417 and bretazenil, two low efficacy pos...

journal_title：British journal of pharmacology

authors： McMahon LR,France CP

更新日期：2006-02-01 00:00:00

abstract：:1. Previous studies demonstrated that elevation of the extracellular calcium concentration during a prolonged exposure to a high concentration of carbachol reverses the staurosporine-induced decrease in the extent of endplate resensitization in voltage-clamped snake twitch fibres. The present studies were designed to ...

journal_title：British journal of pharmacology

authors： Hardwick JC,Parsons RL

更新日期：1993-10-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The Rho GTPase, Rac1, is involved in the pathogenesis of neuropathic pain induced by malformation of dendritic spines in the spinal dorsal horn (sDH) neurons. In the present study, the contribution of spinal Rac1 to peripheral inflammatory pain was studied. EXPERIMENTAL APPROACH:Effects of s.c. ...

journal_title：British journal of pharmacology

authors： Wang Y,Lu YF,Li CL,Sun W,Li Z,Wang RR,He T,Yang F,Yang Y,Wang XL,Guan SM,Chen J

更新日期：2016-03-01 00:00:00

abstract：:1. The effect of intradermally injected endotoxin on skin blood flow was investigated in anaesthetized male Wistar rats in vivo. 2. Local skin blood flow changes were measured hourly for 6 h in the shaved dorsal skin with a laser-Doppler flow probe and compared to changes in control sites which had been injected with ...

journal_title：British journal of pharmacology

authors： Warren JB,Coughlan ML,Williams TJ

更新日期：1992-08-01 00:00:00

abstract：:1 Thermic oedema induced by heating rat paws at 46.5 degrees C was potentiated by local injection of adrenaline, noradrenaline or high doses of isoprenaline. The pro-inflammatory effect of sympathomimetic amines was antagonized by phenoxybenzamine or phentolamine but not by propranolol.2 The subcutaneous space of heat...

journal_title：British journal of pharmacology

authors： Green KL

更新日期：1974-02-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Peptides from venomous animals have long been important for understanding pain mechanisms and for the discovery of pain treatments. Here, we hypothesized that Phα1β, a peptide from the venom of the armed spider Phoneutria nigriventer, produces analgesia by blocking the TRPA1 channel. EXPERIMENTA...

journal_title：British journal of pharmacology

authors： Tonello R,Fusi C,Materazzi S,Marone IM,De Logu F,Benemei S,Gonçalves MC,Coppi E,Castro-Junior CJ,Gomez MV,Geppetti P,Ferreira J,Nassini R

更新日期：2017-01-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Palmitoylethanolamide (PEA) is an endogenous congener of anandamide and potentiates its actions at cannabinoid CB1 and CB2 receptors, and at transient receptor potential vanilloid type-1 (TRPV1) channels. The other endocannabinoid, 2-arachidonoylglycerol (2-AG), was recently suggested to act as a...

journal_title：British journal of pharmacology

authors： Petrosino S,Schiano Moriello A,Cerrato S,Fusco M,Puigdemont A,De Petrocellis L,Di Marzo V

更新日期：2016-04-01 00:00:00

abstract：:Three genes encode the small-conductance Ca(2+)-activated K(+) channels (SK channels). We have stably expressed hSK1 and rSK2 in HEK 293 cells and addressed the pharmacology of these subtypes using whole-cell patch clamp recordings. The bee venom peptide apamin blocked hSK1 as well as rSK2 with IC(50) values of 3.3 nM...

journal_title：British journal of pharmacology

authors： Strøbaek D,Jørgensen TD,Christophersen P,Ahring PK,Olesen SP

更新日期：2000-03-01 00:00:00

abstract：:1 Prostaglandin and thromboxane release from the term pregnant (Day 22) rat uterus in vitro has been measured by radioimmunoassay and gas chromatography combined with mass spectrometry. 2 Prostacyclin (prostaglandin I2, PGI2) and thromboxane A2 (TXA2) (measured as their metabolites, 6-oxo-PGF1 alpha and TXB2, respecti...

journal_title：British journal of pharmacology

authors： Phillips CA,Poyser NL

更新日期：1981-05-01 00:00:00

abstract：:1. Therapeutic doses of colistin sulphomethate sodium B.P. (Colomycin), pento-N sulphomethylpolymyxin B sodium (Thiosporin) and ampicillin B.P. (Penbritin) as well as normal saline have been given to volunteers with normal kidney function.2. A blind crossover technique was used and the effects of the compounds on bloo...

journal_title：British journal of pharmacology

authors： Caldwell AD,Martin AJ,Trigger DJ

更新日期：1969-09-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Rhythmical transient constrictions of the lymphatic vessels provide the means for efficient lymph drainage and interstitial tissue fluid balance. This activity is critical during inflammation, to avoid or limit oedema resulting from increased vascular permeability, mediated by the release of vari...

journal_title：British journal of pharmacology

authors： Rehal S,Blanckaert P,Roizes S,von der Weid PY

更新日期：2009-12-01 00:00:00