Effects on rabbit cardiac potentials of aprindine and indecainide, a new antiarrhythmic agent, in normoxia and hypoxia.

abstract：:1. Guinea-pig tracheal smooth muscle cells were isolated and maintained in culture for 14-21 days prior to the study of the effect of a selective bradykinin B1 agonist and B2 antagonists upon bradykinin-stimulated phospholipase C and D activities. 2. Bradykinin-stimulated phospholipase C activity was determined by mas...

journal_title：British journal of pharmacology

authors： Pyne S,Pyne NJ

更新日期：1993-09-01 00:00:00

abstract：:1 Subcutaneous administration of glucagon (1 and 0.5 mg/kg) 30 min before the injection of carrageenin or dextran into the rat's paw reduced oedema and the local exudation of Evans blue previously given intravenously. 2 The effect persisted after removal of the adrenal medulla but not after adrenalectomy. 3 When gluca...

journal_title：British journal of pharmacology

authors： Garcia Leme J,Morato M,Souza MZ

更新日期：1975-09-01 00:00:00

abstract：:1. A comparative study was carried out to assess the regional haemodynamic effects of intravenous infusion of human alpha- and beta-calcitonin gene-related peptide (CGRP; 0.006, 0.06 and 0.6 nmol h-1) in conscious, unrestrained Wistar rats. 2. With human alpha-CGRP, tachycardia was always accompanied by a fall in mean...

journal_title：British journal of pharmacology

authors： Gardiner SM,Compton AM,Bennett T

更新日期：1989-12-01 00:00:00

abstract：:1 The D3 dopamine receptor presumably activates Gi/Go subtypes of G-proteins, like the structurally analogous D2 receptor, but its signalling targets have not been clearly established due to weak functional signals from cloned receptors as heterologously expressed in mostly non-neuronal cell lines. 2 In this study, re...

journal_title：British journal of pharmacology

authors： Zaworski PG,Alberts GL,Pregenzer JF,Im WB,Slightom JL,Gill GS

更新日期：1999-11-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Betulinic acid (BA) is a naturally occurring triterpenoid widely distributed throughout the plant kingdom. We previously reported that BA inhibits lipopolysaccharide (LPS)-induced interleukin-6 production through modulation of nuclear factor κB (NF-κB) in human peripheral blood mononuclear cells ...

journal_title：British journal of pharmacology

authors： Viji V,Helen A,Luxmi VR

更新日期：2011-03-01 00:00:00

abstract：:1. Imidazoline binding sites have been reported to be present in the locus coeruleus (LC). To investigate the role of these sites in the control of LC neuron activity, we studied the effect of imidazolines using in vivo and in vitro single-unit extracellular recording techniques. 2. In anaesthetized rats, local (27 pm...

journal_title：British journal of pharmacology

authors： Ugedo L,Pineda J,Ruiz-Ortega JA,Martín-Ruiz R

更新日期：1998-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Impaired function of spinal strychnine-sensitive glycine receptors gives rise to chronic pain states and movement disorders. Therefore, increased activity of glycine receptors should help to treat such disorders. Although compounds targeting glycine receptors with a high selectivity are lacking, ...

journal_title：British journal of pharmacology

authors： Eckle VS,Grasshoff C,Mirakaj V,O'Neill PM,Berry NG,Leuwer M,Antkowiak B

更新日期：2014-12-01 00:00:00

abstract：:1. Prolongation of action potentials by cooling or pharmacological treatment can restore conduction in demyelinated axons. We have assessed the ability of pyrethroids (in vitro) to modify action potential kinetics and to reverse conduction block in lesioned peripheral nerve. 2. Fast Na+ currents were isolated in mamma...

journal_title：British journal of pharmacology

authors： Lees G

更新日期：1998-02-01 00:00:00

abstract：:1. By use of patch-clamp techniques, the effects of SD-3212, a novel antiarrhythmic drug, on the calcium current (Ica), the sodium current (INa) and the muscarinic acetylcholine-receptor-operated potassium current (IK.ACh) were examined and compared with those of bepridil in guinea-pig single atrial cells. 2. SD-3212 ...

journal_title：British journal of pharmacology

authors： Hara Y,Nakaya H

更新日期：1995-11-01 00:00:00

abstract：:1. Rabbit isolated irides were loaded with [3H]-noradrenaline and superfused with Tyrode solution. The inhibition by the muscarinic agonists (+/-)-methacholine and pilocarpine of the [3H]-noradrenaline overflow into the superfusate evoked by field stimulation (pulses of 1 ms duration, 75 mA) was measured as an index o...

journal_title：British journal of pharmacology

authors： Bognar IT,Pallas S,Fuder H,Muscholl E

更新日期：1988-07-01 00:00:00

abstract：:1. Transcriptional control of the human beta(2) adrenergic receptor gene (ADRB2) predominantly resides within a 549 base pair region immediately 5' to the start of translation. Within this region, four naturally occurring polymorphisms, -468 C-->G, -367 T-->C, -47 T-->C, and -20 T-->C, have been identified. 2. To dete...

journal_title：British journal of pharmacology

authors： Johnatty SE,Abdellatif M,Shimmin L,Clark RB,Boerwinkle E

更新日期：2002-12-01 00:00:00

abstract：:Despite its long-standing reputation as a foul smelling and toxic gas that is associated with the decay of biological matter,hydrogen sulphide (H2S) has emerged as an important regulator of cardiovascular homoeostasis. H2S promotes a number of cellular signals that regulate metabolism, cardiac function and cell surviv...

journal_title：British journal of pharmacology

authors： Lefer DJ

更新日期：2008-11-01 00:00:00

abstract：BACKGROUND:Macrophage elastase (MMP-12) is involved in the inflammatory process of chronic obstructive pulmonary disease (COPD). The aim of this study was to investigate in mice the effect of MMP-12 inhibition on the inflammatory process induced by cigarette smoke (CS) or by lipopolysaccharide (LPS) exposure of the air...

journal_title：British journal of pharmacology

authors： Le Quément C,Guénon I,Gillon JY,Valença S,Cayron-Elizondo V,Lagente V,Boichot E

更新日期：2008-07-01 00:00:00

abstract：:1. This study analyses the receptors mediating the effects of bradykinin (BK) and analogues on neurogenic twitch contractions of the mouse isolated vas deferens evoked, in the presence of captopril (3 microM), by electrical field stimulation with trains of 4 rectangular 0.5 ms pulses of supramaximal strength, delivere...

journal_title：British journal of pharmacology

authors： Maas J,Rae GA,Huidobro-Toro JP,Calixto JB

更新日期：1995-04-01 00:00:00

abstract：:1. Electroconvulsive treatment (ECT) of rabbits produced ocular inflammation consisting of conjunctival hyperaemia, miosis and protein extravasation into the aqueous humour, reflected by the so-called aqueous flare response (AFR): the maximal reduction in pupil size was 3.8 +/- 0.1 mm (s.e. of mean, n = 16) while the ...

journal_title：British journal of pharmacology

authors： Wang ZY,Waldeck K,Grundemar L,Håkanson R

更新日期：1997-04-01 00:00:00

abstract：:The prejunctional effects of clonidine and phenylephrine were studied in guinea-pig isolated atria by means of field stimulation of the sympathetic nerve terminals during the cardiac refractory period, in the presence of 1 microM atropine. Clonidine (10-100 nM) produced a dose-dependent decrease in the stimulus-inotro...

journal_title：British journal of pharmacology

authors： Ledda F,Mantelli L

更新日期：1984-03-01 00:00:00

abstract：:1. We studied the effects of flash photolysis on the novel enantiomeric cardiac inotropes EMD 57033 (a calcium sensitizer) and EMD 57439 (a phosphodiesterase III inhibitor) in rat isolated ventricular trabeculae. 2. In skinned trabeculae, EMD 57439 had no effect on force production, consistent with lack of an active c...

journal_title：British journal of pharmacology

authors： Lee JA,Palmer S,Kentish JC

更新日期：1996-08-01 00:00:00

abstract：:The neurotoxin MPP+ potently inhibited the striatal binding of [3H]-tyramine, a putative marker for the vesicular transporter of dopamine, and provoked a massive in vivo release of striatal dopamine. Tetrabenazine, an established ligand for the vesicular catecholamine carrier, potently inhibited [3H]-tyramine binding,...

journal_title：British journal of pharmacology

authors： Vaccari A,Del Zompo M,Melis F,Gessa GL,Rossetti ZL

更新日期：1991-11-01 00:00:00

abstract：:At nanomolar concentrations, SR141716 and AM251 act as specific and selective antagonists of the cannabinoid CB1 receptor. In the micromolar range, these compounds were shown to inhibit basal G-protein activity, and this is often interpreted to implicate constitutive activity of the CB1 receptors in native tissue. We ...

journal_title：British journal of pharmacology

authors： Savinainen JR,Saario SM,Niemi R,Järvinen T,Laitinen JT

更新日期：2003-12-01 00:00:00

abstract：:1 The effects of purported prostaglandin synthesis inhibitors on steroid and prostaglandin (E and F) release from trypsin-dispersed cat adrenocortical cells were investigated. 2 Low indomethacin concentrations potentiated adrenocorticotrophin (ACTH)-evoked prostaglandin and steroid release, whereas higher concentratio...

journal_title：British journal of pharmacology

authors： Laychock SG,Rubin RP

更新日期：1976-06-01 00:00:00

abstract：:Halothane has many effects on the resting membrane potential (V(m)) of excitable cells and exerts numerous effects on skeletal muscle one of which is the enhancement of Ca(2+) release by the sarcoplasmic reticulum (SR) resulting in a sustained contracture. The aim of this study was to analyse the effects of clinical d...

journal_title：British journal of pharmacology

authors： Sauviat MP,Frizelle HP,Descorps-Declère A,Mazoit JX

更新日期：2000-06-01 00:00:00

abstract：:1. The effect of a single injection of the monoamine oxidase inhibitor, tranylcypromine, administered intravenously (20 mg/kg) or into the lateral cerebral ventricle (5-10 mg), on hypothalamic and rectal temperature, has been investigated.2. Intravenous tranylcypromine causes a significant rise in body temperature, wh...

journal_title：British journal of pharmacology

authors： Cranston WI,Rosendorff C

更新日期：1970-05-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Venoms are a rich source of ligands for ion channels, but very little is known about their capacity to modulate G-protein coupled receptor (GPCR) activity. We developed a strategy to identify novel toxins targeting GPCRs. EXPERIMENTAL APPROACH:We studied the interactions of mamba venom fractions...

journal_title：British journal of pharmacology

authors： Quinton L,Girard E,Maiga A,Rekik M,Lluel P,Masuyer G,Larregola M,Marquer C,Ciolek J,Magnin T,Wagner R,Molgó J,Thai R,Fruchart-Gaillard C,Mourier G,Chamot-Rooke J,Ménez A,Palea S,Servent D,Gilles N

更新日期：2010-01-01 00:00:00

abstract：:1. The purpose of this investigation was to determine whether enhanced contractile responses to noradrenaline (NA) of mesenteric arteries from rats with chronic streptozotocin-induced diabetes are associated with increases in mean cytosolic [Ca(2+)]i. 2. [Ca(2+)]i was measured with fura 2-AM, and was monitored simulta...

journal_title：British journal of pharmacology

authors： Chow WL,Zhang L,MacLeod KM

更新日期：2001-09-01 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：:1. The aim of this study was to investigate the cardiovascular effects of a novel, potent and specific phosphodiesterase 5 (PDE 5) inhibitor, 1,3 dimethyl-6-(2-propoxy-5-methane sulphonylamidophenyl)-pyrazolo[3,4-d]pyrimidin-4-(5H)-one (DMPPO) in phenylephrine-precontracted rat aortic rings and different in vivo rat p...

journal_title：British journal of pharmacology

authors： Delpy E,le Monnier de Gouville AC

更新日期：1996-07-01 00:00:00

abstract：:1. Action potentials from guinea-pig single ventricular myocytes were interrupted by application of a 300 ms voltage clamp to -40 mV in order to evoke the Ca-activated tail current which is thought to be carried by Na:Ca exchange. Stimulation frequency was 1 Hz and temperature 36 degrees C. 2. The actions of ryanodine...

journal_title：British journal of pharmacology

authors： White E,Terrar DA

更新日期：1990-10-01 00:00:00

abstract：:1. The effects of different K+ channel blockers were studied on nitric oxide (NO)-mediated non-adrenergic non-cholinergic (NANC) relaxations in the canine ileocolonic junction. 2. The non-selective blockers of K+ channels, 4-aminopyridine (4-AP) and tetraethylammonium (TEA) and the blocker of large conductance Ca(2+)-...

journal_title：British journal of pharmacology

authors： De Man JG,Boeckxstaens GE,Pelckmans PP,De Winter BY,Herman AG,Van Maercke YM

更新日期：1993-10-01 00:00:00

abstract：:1 The present study comprised treatment of healthy male rats with Delta(9)-tetrahydrocannabinol (THC, 10 mg kg(-1), p.o.), and combinations of THC with benzoflavone moiety (BZF, 10 and 20 mg kg(-1), p.o.) isolated from Passiflora incarnata Linneaus, over a period of 30 days. 2 Upon 30-days chronic administrations, the...

journal_title：British journal of pharmacology

authors： Dhawan K,Sharma A

更新日期：2003-01-01 00:00:00

abstract：:1. We examined how gamma-aminobutyric acid (GABA) influences interaction of picrotoxin and tert-butylbicyclophosphorothionate (TBPS) with recombinant rat alpha 1 beta 2 gamma 2 GABAA receptors stably expressed in human embryonic kidney cells (HEK293), as monitored with changes in Cl- currents measured by the whole-cel...

journal_title：British journal of pharmacology

authors： Dillon GH,Im WB,Carter DB,McKinley DD

更新日期：1995-06-01 00:00:00