Recent developments in research of melatonin and its potential therapeutic applications.

abstract：:1. A series of 5-hydroxytryptamine (5-HT) receptor agonists including 5-HT, 5-carboxamidotryptamine (5-CT) and sumatriptan produced little or no contraction of rabbit isolated mesenteric arteries under resting tone conditions, even at concentrations up to 10(-4) M. 2. When the same agonists were retested in mesenteric...

journal_title：British journal of pharmacology

authors： Choppin A,O'Connor SE

更新日期：1995-01-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Peptide YY (PYY) and neuropeptide Y (NPY) activate Y receptors, targets under consideration as treatments for diarrhoea and other intestinal disorders. We investigated the gastrointestinal consequences of selective PYY or NPY ablation on mucosal ion transport, smooth muscle activity and transit u...

journal_title：British journal of pharmacology

authors： Tough IR,Forbes S,Tolhurst R,Ellis M,Herzog H,Bornstein JC,Cox HM

更新日期：2011-09-01 00:00:00

abstract：:1. The effects of the selective alpha 2-adrenoceptor agonist, medetomidine, were assessed on plasma levels of immunoreactive atrial natriuretic peptide (IR-ANP), haemodynamics and on urine water and solute excretion in conscious, chronically cannulated, 7 month-old spontaneously hypertensive (SHR) and age-matched Wist...

journal_title：British journal of pharmacology

authors： Ruskoaho H,Leppäluoto J

更新日期：1989-05-01 00:00:00

abstract：:1. The effect of trimebutine on the voltage-dependent inward Ca2+ current was investigated by the whole-cell voltage-clamp technique in single smooth muscle cells from rabbit ileum. 2. Trimebutine (3-100 microM) reduced the Ca2+ current in a concentration-dependent manner. The inhibitory effect on the Ca2+ current was...

journal_title：British journal of pharmacology

authors： Nagasaki M,Komori S,Ohashi H

更新日期：1993-09-01 00:00:00

abstract：:1. Calcium entry via neuronal calcium channels is essential for the process of neurotransmission. We investigated the calcium channel subtypes involved in the operation of cardiac autonomic neurotransmission by examining the effects of selective calcium channel blockers on the inotropic responses to electrical field s...

journal_title：British journal of pharmacology

authors： Serone AP,Angus JA

更新日期：1999-06-01 00:00:00

abstract：:1 Both phasic and tonic responses to KCl 160 mM were reduced by Ca2+ deprivation. After 90 min, the phasic response was abolished but 13 +/- 1.5% of the tonic response remained. This resistant component was still present if the Ca2+-free solution contained EGTA 0.1 mM. The tonic response was more resistant to deprivat...

journal_title：British journal of pharmacology

authors： Hay DW,Wadsworth RM

更新日期：1982-05-01 00:00:00

abstract：:Adenosine enhanced histamine release and prolonged the adenosine 3':5'-cyclic monophosphate (cyclic AMP) response in purified rat peritoneal mast cells following immunological challenge. The effect on the cyclic AMP response, which was blocked by 8-phenyltheophylline, probably results from an interaction with A2-purin...

journal_title：British journal of pharmacology

authors： Church MK,Hughes PJ

更新日期：1985-05-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Mitochondria possess their own source of cAMP, that is, soluble adenylyl cyclase (sAC). Activation or expression of mitochondrial sAC promotes mitochondrial function. Oestrogen receptor signalling plays an essential role in the regulation of mitochondrial function. Here we aimed to determine whet...

journal_title：British journal of pharmacology

authors： Pozdniakova S,Guitart-Mampel M,Garrabou G,Di Benedetto G,Ladilov Y,Regitz-Zagrosek V

更新日期：2018-10-01 00:00:00

abstract：:1. When the isolated small intestine of the rat is perfused via the mesenteric artery, an oxytocic principle (Gaddum's substance R) is released which is detectable in the perfusate after 30 min and is present in samples collected 8 h later. 2. The oxytocic activity of substance R is lost after boiling but is unaffecte...

journal_title：British journal of pharmacology

authors： Douglas GJ,Williams KI,Flower RJ

更新日期：1991-04-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Prefrontal dopamine release by the combined activation of 5-HT1A and sigma-1 (σ1 ) receptors is enhanced by the GABAA receptor antagonist picrotoxin in mice. Here, we examined whether this neurochemical event was accompanied by behavioural changes. EXPERIMENTAL APPROACH:Male mice were treated wi...

journal_title：British journal of pharmacology

authors： Hasebe S,Ago Y,Watabe Y,Oka S,Hiramatsu N,Tanaka T,Umehara C,Hashimoto H,Takuma K,Matsuda T

更新日期：2017-02-01 00:00:00

abstract：BACKGROUND AND PURPOSE:In the sensorimotor (SM) and medial prefrontal (mPF) basal ganglia (BG) circuits, the cortical information is transferred to the substantia nigra pars reticulata (SNr) through the hyperdirect trans-subthalamic pathway and through the direct and indirect trans-striatal pathways. The cannabinoid CB...

journal_title：British journal of pharmacology

authors： Antonazzo M,Gutierrez-Ceballos A,Bustinza I,Ugedo L,Morera-Herreras T

更新日期：2019-04-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The type-5 PDE inhibitor vardenafil reduces myocardial infarct size in situ, following ischemia/reperfusion, when applied at reperfusion in animal models. Little is known about the underlying protective signaling. Here, we test whether vardenafil is protective in rat isolated hearts and in a cell...

journal_title：British journal of pharmacology

authors： Maas O,Donat U,Frenzel M,Rütz T,Kroemer HK,Felix SB,Krieg T

更新日期：2008-05-01 00:00:00

abstract：:1. In mouse pancreatic beta-cells the regulation of the diazoxide-sensitivity of the adenosine 5'-triphosphate-dependent K+ channel (K-ATP-channel) was examined by use of the patch-clamp technique. 2. In intact beta-cells incubated at 37 degrees C in the presence of 3 mM D-glucose, diazoxide did not affect the single ...

journal_title：British journal of pharmacology

authors： Schwanstecher C,Dickel C,Ebers I,Lins S,Zünkler BJ,Panten U

更新日期：1992-09-01 00:00:00

abstract：:We utilized a rat model of myocardial infarction to investigate whether manganese superoxide dismutase (Mn-SOD), an intrinsic radical scavenger, and tumour necrosis factor- alpha (TNF-alpha) and/or interleukin-1beta (IL-1beta) are involved in the late phase of ischaemic preconditioning (IP). IP was induced in anaesthe...

journal_title：British journal of pharmacology

authors： Yamashita N,Hoshida S,Otsu K,Taniguchi N,Kuzuya T,Hori M

更新日期：2000-10-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Ajmaline is a widely used antiarrhythmic drug. Its action on voltage-gated ion channels in skeletal muscle is not well documented and we have here elucidated its effects on Na(+) and K(+) channels. EXPERIMENTAL APPROACH:Sodium (I(Na)) and potassium (I(K)) currents in amphibian skeletal muscle fi...

journal_title：British journal of pharmacology

authors： Friedrich O,V Wegner F,Wink M,Fink RH

更新日期：2007-05-01 00:00:00

abstract：:1. The effects of several agonists of the metabotropic glutamate receptor (mGluR) were studied in adult rat striatal slices by measuring (i) KCl (30 mM)-induced output of previously taken up D-[3H]-aspartate (Asp), (ii) forskolin (30 microM)-induced adenosine 3':5'-cyclic monophosphate (cyclic AMP) accumulation and (i...

journal_title：British journal of pharmacology

authors： Lombardi G,Alesiani M,Leonardi P,Cherici G,Pellicciari R,Moroni F

更新日期：1993-12-01 00:00:00

abstract：:The effects of intravenous doses of Org 6001 and disopyramide (10 mg/kg) known to confer protection against early postligation-induced arrhythmias in the anaesthetized rat when given prophylactically, were assessed following postligation administration. When given 1 min after ligation both drugs greatly reduced the in...

journal_title：British journal of pharmacology

authors： Marshall RJ,Muir AW,Winslow E

更新日期：1982-08-01 00:00:00

abstract：:1. Histamine contracted the tracheal and major bronchial muscles of sheep and relaxed the muscles of the lesser bronchi and bronchioles.2. The stimulant action of histamine on the trachea was antagonized by mepyramine, whereas the relaxant effect on the bronchial tree was not.3. 5-Hydroxytryptamine contracted the musc...

journal_title：British journal of pharmacology

authors： Yre P

更新日期：1969-07-01 00:00:00

abstract：:An attractive alternative to the use of direct agonists at the cannabinoid receptor type 1 (CB1) in the control of neuropathic pain may be to potentiate the actions of endogenous cannabinoids. Thus, the effects of AM404, an inhibitor of anandamide uptake, were assessed in an experimental model of neuropathic pain in r...

journal_title：British journal of pharmacology

authors： Costa B,Siniscalco D,Trovato AE,Comelli F,Sotgiu ML,Colleoni M,Maione S,Rossi F,Giagnoni G

更新日期：2006-08-01 00:00:00

abstract：:1. We have evaluated the selectivity of ketoprofen and two novel nonsteroidal anti-inflammatory drugs, N-[2-(cyclohexyloxy)-4-nitrophenyl]methanesulphonamide (NS-398) and 5-methanesulphonamido-6-(2,4-difluorothiophenyl)-1-indano ne (L-745,337), in inhibiting the cyclo-oxygenase activity of prostaglandin endoperoxide s...

journal_title：British journal of pharmacology

authors： Panara MR,Greco A,Santini G,Sciulli MG,Rotondo MT,Padovano R,di Giamberardino M,Cipollone F,Cuccurullo F,Patrono C

更新日期：1995-11-01 00:00:00

abstract：:1. Arachidonic acid caused larger contractions to indomethacin-tested guinea-pig trachea than in control tracheae. 2. No change in contractions was obtained in tracheae treated with 5,8, 11, 14, eicosatetraynoic acid (ETYA 10 micro M). 3. ETYA (100 micro M) blocked the effect of indomethacin on arachidonic acid-induce...

journal_title：British journal of pharmacology

authors： Mitchell HW

更新日期：1982-08-01 00:00:00

abstract：:1. The electrical activity of guinea-pig pelvic ganglion cells following iontophoretically applied cholinergic drugs, alone and during orthodromic nerve stimulation via the hypogastric nerve, has been recorded intracellularly.2. Iontophoretic application of nicotine (Nic) and acetylcholine (ACh) reduced membrane resis...

journal_title：British journal of pharmacology

authors： Holman ME,Muir TC,Szurszewski JH,Yonemura K

更新日期：1971-01-01 00:00:00

abstract：:The detrimental actions of leptin on cardiovascular function are well established. Smith et al. report the novel finding of a reduction of infarct size by exogenous leptin when given at reperfusion. The involvement of the reperfusion injury salvage kinase (RISK) pathway in such reduction of infarct size and its relati...

journal_title：British journal of pharmacology

authors： Heusch G

更新日期：2006-09-01 00:00:00

abstract：:1. In pithed rats, preganglionic vagal nerve stimulation (at 5 Hz) elicited a bradycardia. This bradycardia was potentiated by the angiotensin converting enzyme inhibitor, captopril (1 mg kg-1, i.v.) by about 40%. Subsequent angiotensin II infusion (0.03 micrograms kg-1 min-1) reversed this effect. A similar facilitat...

journal_title：British journal of pharmacology

authors： Rechtman M,Majewski H

更新日期：1993-09-01 00:00:00

abstract：:1. The effects of sodium nitroprusside (SNP, a nitric oxide donor) and authentic nitric oxide (NO) on superoxide anion (O2-) generation were investigated in human polymorphonuclear leukocytes (PMNs). 2. Neither SNP (10 nM to 10 microM) nor NO (40 nM to 40 microM) alone induced O2- generation or change of intracellular...

journal_title：British journal of pharmacology

authors： Morikawa M,Inoue M,Tokumaru S,Kogo H

更新日期：1995-08-01 00:00:00

abstract：:1. Alterations of 5-hydroxytryptaminergic mechanisms are thought to play a special role in the pathogenesis of depression and antidepressant treatments are assumed to restore these changes. 2. We have used one of the most reliable models of depression, the olfactory bulbectomized rat to study the long term consequence...

journal_title：British journal of pharmacology

authors： Grecksch G,Zhou D,Franke C,Schröder U,Sabel B,Becker A,Huether G

更新日期：1997-12-01 00:00:00

abstract：:1 The effects of 4-Chloro-m-Cresol (4-CmC) were examined on heterologously expressed wild type (WT), Paramyotonia Congenita (R1448H) and Hyperkalemic Periodic Paralysis (M1360V) mutant alpha-subunits of human muscle sodium channels. 2 Block of rested sodium channels caused by 4-CmC was concentration-dependent with an ...

journal_title：British journal of pharmacology

authors： Haeseler G,Leuwer M,Kavan J,Würz A,Dengler R,Piepenbrock S

更新日期：1999-11-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Leucocyte infiltration is a rate-limiting step in the pathophysiology of acute pancreatitis (AP) although the adhesive mechanisms supporting leucocyte-endothelium interactions in the pancreas remain elusive. The aim of this study was to define the role of lymphocyte function antigen-1 (LFA-1) in ...

journal_title：British journal of pharmacology

authors： Awla D,Abdulla A,Zhang S,Roller J,Menger MD,Regnér S,Thorlacius H

更新日期：2011-05-01 00:00:00

abstract：:1. The effect of prostaglandin E1 (PGE1) on the spontaneous phasic contraction of the rat isolated portal vein was studied. 2. The isolated portal vein exhibited spontaneous phasic contractions. Removal of Ca2+ from Krebs-Ringer solution or application of nifedipine abolished the spontaneous contraction, indicating th...

journal_title：British journal of pharmacology

authors： Miwa T,Endou M,Okumura F

更新日期：1997-04-01 00:00:00

abstract：:1. Prostaglandin E2 (PGE2) relaxes circular smooth muscle of the rabbit isolated jugular vein at very low concentrations (mean pIC50 against histamine-induced contraction = 9.34). This effect is not blocked by the EP1-receptor antagonist, AH 6809 (2 microM). 2. From a group of prostaglandin E analogues examined, 16,16...

journal_title：British journal of pharmacology

authors： Lawrence RA,Jones RL

更新日期：1992-04-01 00:00:00