Biphasic responsiveness of rat pial arterioles to dopamine: direct observations on the microcirculation.

abstract：BACKGROUND AND PURPOSE:Much interest is currently being focused on the anti-nociceptive effects mediated by nicotinic acetylcholine (nACh) receptors, including their location and mechanism of action. The purpose of this study was to elucidate these issues using 5-iodo-3-(2(S)-azetidinylmethoxy)pyridine (5IA), a nACh re...

journal_title：British journal of pharmacology

authors： Ueda M,Iida Y,Tominaga A,Yoneyama T,Ogawa M,Magata Y,Nishimura H,Kuge Y,Saji H

更新日期：2010-03-01 00:00:00

abstract：:To establish that bradykinin is formed in the heart we measured bradykinin in the venous effluent from rat isolated hearts perfused with Krebs-Henseleit buffer. In addition, we examined the effect on bradykinin outflow of the angiotensin converting enzyme (ACE) inhibitor, ramiprilat. From rat isolated normoxic hearts ...

journal_title：British journal of pharmacology

authors： Baumgarten CR,Linz W,Kunkel G,Schölkens BA,Wiemer G

更新日期：1993-02-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Selective and potent antagonists for the β(2) -adrenoceptor are potentially interesting as experimental and clinical tools, and we sought to identify novel ligands with this pharmacology. EXPERIMENTAL APPROACH:A range of pharmacological assays was used to assess potency, affinity, selectivity (β...

journal_title：British journal of pharmacology

authors： Hothersall JD,Black J,Caddick S,Vinter JG,Tinker A,Baker JR

更新日期：2011-09-01 00:00:00

abstract：:1. Release-regulating alpha 2-autoreceptors in human brain were characterized pharmacologically in cortical slices from patients undergoing neurosurgery to remove subcortical tumours; the slices were prelabelled with [3H]-noradrenaline ([3H]-NA) and stimulated electrically (3 Hz, 2 ms, 24 mA) under superfusion conditi...

journal_title：British journal of pharmacology

authors： Raiteri M,Bonanno G,Maura G,Pende M,Andrioli GC,Ruelle A

更新日期：1992-12-01 00:00:00

abstract：:1. The effects of forskolin, prostaglandin E1 (PGE1), dibutyryl cyclic AMP (db cyclic AMP), dibutyryl cyclic GMP (db cyclic GMP) and 3-isobutyl-l-methyl-xanthine (IBMX) were investigated on the expression of tissue factor and thrombomodulin activities on the surface of human saphenous vein endothelial cells (HSVEC) in...

journal_title：British journal of pharmacology

authors： Archipoff G,Beretz A,Bartha K,Brisson C,de la Salle C,Froget-Léon C,Klein-Soyer C,Cazenave JP

更新日期：1993-05-01 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：BACKGROUND AND PURPOSE:Hydrogen sulphide (H(2) S) is gaining acceptance as a gaseous signal molecule. However, mechanisms regarding signal termination are not understood. We used stigmatellin and antimycin A, inhibitors of sulphide quinone reductase (SQR), to test the hypothesis that the catabolism of H(2) S involves S...

journal_title：British journal of pharmacology

authors： Linden DR,Furne J,Stoltz GJ,Abdel-Rehim MS,Levitt MD,Szurszewski JH

更新日期：2012-04-01 00:00:00

abstract：:1. Ca2+ buffering function of sarcoplasmic reticulum (SR) in the resting state of arteries from spontaneously hypertensive rats (SHR) was examined. Differences in the effects of cyclopiazonic acid (CPA) and thapsigargin, agents which inhibit the Ca(2+)-ATPase of SR, on tension and cellular Ca2+ level were assessed in ...

journal_title：British journal of pharmacology

authors： Nomura Y,Asano M,Ito K,Uyama Y,Imaizumi Y,Watanabe M

更新日期：1997-01-01 00:00:00

abstract：:1. To obtain direct evidence of abnormal eicosanoid biosynthesis in rats injected with anti-glomerular-basement-membrane antibodies (a-GBM), products derived from thromboxane A2 (TXA2) and prostacyclin (PGI2) were measured in 24 h urine collections before and after a-GBM. 2. Administration of a-GBM (9.5 mg) caused alb...

journal_title：British journal of pharmacology

authors： Ward PS,Fuller RW,Ritter JM,Cashman SJ,Rees AJ,Dollery CT

更新日期：1991-07-01 00:00:00

abstract：:Asthma is an inflammatory disease of the lungs and the transcription factor NF-kappa B regulates the production of numerous inflammatory mediators that may have a role in the pathogenesis of asthma. Hence, the signalling pathways leading to NF-kappa B activation are considered prime targets for novel anti-inflammatory...

journal_title：British journal of pharmacology

authors： Catley MC,Chivers JE,Holden NS,Barnes PJ,Newton R

更新日期：2005-05-01 00:00:00

abstract：:I.c.v. self-administration of MDMA (0.01-2 micro g per infusion), alone and in combination with CP 55,940 (0.4 micro g infusion(-1)), was studied on an operant responding procedure. On the basis of individual preference for one of two levers, developed during training, rats were allowed to self-administer vehicle from...

journal_title：British journal of pharmacology

authors： Braida D,Sala M

更新日期：2002-08-01 00:00:00

abstract：:1. Chronic inhibition of nitric oxide synthase (NOS) provokes a hypertensive state which has been shown to be angiotensin II (Ang-II) dependent. In addition to raising blood pressure, NOS inhibition also causes leukocyte adhesion. The present study was designed to define the role of Ang-II in hypertension and in the l...

journal_title：British journal of pharmacology

authors： Alvarez A,Piqueras L,Bello R,Canet A,Moreno L,Kubes P,Sanz MJ

更新日期：2001-02-01 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：:Pulmonary hypertension (PH) is a rare, progressive pulmonary vasculopathy characterized by increased mean pulmonary arterial pressure, pulmonary vascular remodelling and right ventricular failure. Current treatments are not curative, and new therapeutic strategies are urgently required. Clinical and preclinical eviden...

journal_title：British journal of pharmacology

authors： Scott TE,Kemp-Harper BK,Hobbs AJ

更新日期：2019-06-01 00:00:00

abstract：:By examination of compound action potentials in the saphenous nerve of the anaesthetized rat it has been shown that capsaicin causes a rapid, dose-dependent, failure of conduction in many C-fibres when applied directly to the nerve. A large reduction in C-fibre conduction occurs with concentrations as low as 110 micro...

journal_title：British journal of pharmacology

authors： Baranowski R,Lynn B,Pini A

更新日期：1986-10-01 00:00:00

abstract：:1. Stimulation of the murine macrophage cell line RAW 264.7 with thapsigargin, an endomembrane Ca(2+)-ATPase inhibitor, induced histamine production in a time- and concentration-dependent manner. 2. The protein kinase C activator, 12-O-tetradecanoylphorbol 13-acetate (TPA), also enhanced histamine production. 3. alpha...

journal_title：British journal of pharmacology

authors： Shiraishi M,Hirasawa N,Kobayashi Y,Oikawa S,Murakami A,Ohuchi K

更新日期：2000-02-01 00:00:00

abstract：:1. [Phe1psi(CH2-NH)Gly2]nociceptin-(1 - 13)-NH2 (Phepsi), a tridecapeptide analogue of orphanin FQ/nociceptin (OFQ/N), was introduced as a competitive antagonist of opioid receptor-like orphan receptor (ORL1) in guinea-pig ileum and mouse vas deferens preparations in vitro but was recently found to act as an agonist i...

journal_title：British journal of pharmacology

authors： Chiou LC

更新日期：1999-09-01 00:00:00

abstract：:1 PD 117302, a new nonpeptide opioid compound shown in in vitro studies to be a selective kappa-opioid agonist, has been evaluated in vivo for antinociceptive activity and other effects characteristic of kappa-receptor activation. 2 Dose-related long lasting antinociception was produced by PD 117302 against a mechanic...

journal_title：British journal of pharmacology

authors： Leighton GE,Johnson MA,Meecham KG,Hill RG,Hughes J

更新日期：1987-12-01 00:00:00

abstract：:1. We have investigated the in vitro interaction between chloride ions and endothelium as revealed by alterations in vascular contractility and smooth muscle cell membrane potential in isolated pulmonary arteries from Dahl salt-resistant normotensive and salt-sensitive hypertensive rats. 2. Exposure to nitro-l-arginin...

journal_title：British journal of pharmacology

authors： Bieger D,Duggan JA,Tabrizchi R

更新日期：2004-03-01 00:00:00

abstract：:1. The effects of noradrenaline, endothelin-1, acetylcholine and sodium nitroprusside were studied in isolated pulmonary arteries obtained from 14 patients undergoing lobectomy for lung carcinoma. Seven patients had shown increased response to a bronchodilator test prior to operation. In the remaining patients (contro...

journal_title：British journal of pharmacology

authors： Cases E,Vila JM,Medina P,Aldasoro M,Segarra G,Lluch S

更新日期：1996-12-01 00:00:00

abstract：:1 The putative 5-hydroxytryptamine (5-HT) receptor blocking drugs methysergide (10 mg/kg) and methergoline (5 mg/kg) were found to abolish some components of the hyperactivity syndrome, including head weaving and forepaw treading, which follow administration to rats of tranylcypromine (20 mg/kg) and L-tryptophan (100 ...

journal_title：British journal of pharmacology

authors： Deakin JF,Green AR

更新日期：1978-10-01 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. Opioid agonists inhibit neurogenic mucus secretion in the airways. The mechanism of the inhibition is unknown but may be via opening of potassium (K+) channels. We studied the effect on neurogenic secretion in ferret trachea in vitro of the OP1 receptor (formerly known as delta opioid receptor) agonist [D-Pen2,5]en...

journal_title：British journal of pharmacology

authors： Ramnarine SI,Liu YC,Rogers DF

更新日期：1998-04-01 00:00:00

abstract：:1. Acetylcholine (ACh)-induced relaxation of aortic strips with endothelium and production of cyclic GMP between streptozotocin-induced diabetic and age-matched control rats were compared. 2. The concentration-response curve for ACh-induced relaxation was shifted to the right in diabetic rats. IC50 values for ACh were...

journal_title：British journal of pharmacology

authors： Kamata K,Miyata N,Kasuya Y

更新日期：1989-06-01 00:00:00

abstract：:1. Exposure of isolated skeletal muscle to troglitazone has resulted in inconsistent findings ranging from inhibition to stimulation of fuel oxidation and the glycogenic pathway. To better understand such variation in outcome, the present study used isolated rat soleus muscle strips to examine the interdependent influ...

journal_title：British journal of pharmacology

authors： Gras F,Brunmair B,Roden M,Waldhäusl W,Fürnsinn C

更新日期：2003-03-01 00:00:00

abstract：:1. The effects of 8-bromoguanosine 3':5'-cyclic monophosphate (8-bromo-cyclic GMP) on phenylephrine-induced contractions and phosphatidylinositol (PI) hydrolysis were investigated in rat isolated caudal artery. The effects of the nucleotide were compared to those of felodipine, a dihydropyridine Ca2+ channel antagonis...

journal_title：British journal of pharmacology

authors： Lum Min SA,Tabrizchi R

更新日期：1995-09-01 00:00:00

abstract：:Peroxisome proliferator-activated receptor gamma (PPARgamma), a member of the nuclear receptor superfamily, is activated by several compounds, including the thiazolidinediones. In addition to being a therapeutic target for obesity, hypolipidaemia and diabetes, perturbation of PPARgamma signalling is now believed to be...

journal_title：British journal of pharmacology

authors： Seargent JM,Yates EA,Gill JH

更新日期：2004-12-01 00:00:00

abstract：:1 In spontaneously active Purkinje fibres of young cows the dose-response curves of the action of isoprenaline upon different electrophysiological parameters were measured.2 The increase in slope of diastolic depolarization could roughly be described by a one-for-one binding curve with a half maximum effect near 10(-8...

journal_title：British journal of pharmacology

authors： Grabowski W,Lüttgau HC,Schulze JJ

更新日期：1978-07-01 00:00:00

abstract：:1. We have compared the effects of ouabain on the maintenance of gap junctional communication in rat aortic A7r5 smooth muscle cells, monkey COS-1 fibroblasts and human HeLa epithelial cells. 2. Ouabain (1 mM) interrupted dye coupling between confluent A7r5 cells within approximately 1 h, and high concentrations of ou...

journal_title：British journal of pharmacology

authors： Martin PE,Hill NS,Kristensen B,Errington RJ,Griffith TM

更新日期：2003-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The Na+/Ca2+ exchanger (NCX) may contribute to triggered activity and transmural dispersion of repolarization, which are substrates of torsades de pointes (TdP) type arrhythmias. This study examined the effects of selective inhibition of the NCX by SEA0400 on the occurrence of dofetilide-induced ...

journal_title：British journal of pharmacology

authors： Farkas AS,Makra P,Csík N,Orosz S,Shattock MJ,Fülöp F,Forster T,Csanády M,Papp JG,Varró A,Farkas A

更新日期：2009-03-01 00:00:00