abstract：:A dispersed rat anterior pituitary cell system has been used to investigate the effects of cyproheptadine and metergoline on prolactin secretion. Both drugs were potent inhibitors of prolactin secretion. However, the inhibition was not antagonized by either 5-hydroxytryptamine or a variety of dopamine antagonists. We ...

journal_title：British journal of pharmacology

authors： Besser GM,Delitala G,Grossman A,Yeo T

更新日期：1980-09-01 00:00:00

abstract：:The effects of local perivascular application of dopamine to rat pial arterioles. (20-40 micrometer i.d.) were examined in situ, at the microcirculatory level, by use of a high-resolution closed circuit television microscope recording system. Local application of very low, physiological doses (1 to 10 pg) of dopamine ...

journal_title：British journal of pharmacology

authors： Altura BM,Gebrewold A,Lassoff S

更新日期：1980-08-01 00:00:00

abstract：:1 The role of histamine H1- and H2-receptors in mediating the cutaneous inflammatory response produced by exogenous histamine and the release of endogenous histamine from mast cells has been investigated by a method which permits simultaneous, quantitative measurement of vasodilatation, vascular permeability and oedem...

journal_title：British journal of pharmacology

authors： Owen DA,Poy E,Woodward DF,Daniel D

更新日期：1980-08-01 00:00:00

abstract：:1 A series of cationic, lipophilic histamine H1-receptor antagonists, neuroleptics, antidepressants and monoamine oxidase inhibitors were tested for their effects on anti-IgE-induced histamine release from human lung fragments in vitro. 2 They had a biphasic effect: at low concentrations a dose-related inhibition of h...

journal_title：British journal of pharmacology

authors： Church MK,Gradidge CF

更新日期：1980-08-01 00:00:00

abstract：:1 Cumulative concentration-response relationships for the chronotropic effects of histamine, oxymetazoline, clonidine and thirteen clonidine-like imidazolidine derivatives were examined in isolated spontaneously beating guinea-pig atria.2 The following compounds induced positive chronotropic effects: histamine, clonid...

journal_title：British journal of pharmacology

authors： McCulloch MW,Medgett IC,Rand MJ,Story DF

更新日期：1980-07-01 00:00:00

abstract：:1 Post-tetanic potentiation (p.t.p.) of the compound action potential in the presence of hexamethonium was observed in the isolated stellate ganglion of the hamster using extracellular postganglionic recordings. 2 The magnitude of the p.t.p. was small (less than a 20% increase) in the control solution, but increased a...

journal_title：British journal of pharmacology

authors： Christ D

更新日期：1980-06-01 00:00:00

abstract：:1 Citrated platelet-rich plasma was prepared from New Zealand white rabbits before, during and after administration of chlorpromazine (2 mg/kg) intramuscularly once daily for 3 to 4 weeks. 2 In these plasmas, the velocity of platelet aggregation by 5-hydroxytryptamine (5-HT) added at 1, 3 and 10 microM increased great...

journal_title：British journal of pharmacology

authors： Baldacci M,Baldacci M,Bergel TD,Born GV,Hickman M

更新日期：1980-05-01 00:00:00

abstract：:1 Cellulose sulphate, like heparin, prolonged the clotting time in partial thromboplastin time (PTT) assays, inhibited the amidolytic activity of thrombin, was without effect on amidolysis catalysed by activated coagulation factor X(Xa), and potentiated the inhibition of both thrombin and Xa by antithrombin III (AT). ...

journal_title：British journal of pharmacology

authors： Kindness G,Long WF,Williamson FB

更新日期：1980-04-01 00:00:00

abstract：:1 The spasmogenic and spasmolytic effects of beta-lipotropin (LPH) fragments and one analogue were investigated on different parts of the gastro-intestinal tract of guinea-pig and rat in vitro.2 Changes in muscle tone were observed in colon and rectum and to a lesser extent in jejunum and ileum of both species. Rat co...

journal_title：British journal of pharmacology

authors： Nijkamp FP,Van Ree JM

更新日期：1980-04-01 00:00:00

abstract：:1 Pretreatment of dogs for 20 to 24 h before the start of experiments with reserpine (0.5 mg/kg) depleted noradrenaline from cerebral and mesenteric arteries, the diminution being greater in the latter arteries. 2 Contractile responses of helically-cut strips of cerebral and mesenteric arteries to noradrenaline were u...

journal_title：British journal of pharmacology

authors： Hayashi S,Miyazaki M,Toda N

更新日期：1980-03-01 00:00:00

abstract：:The effect of bath-applied luteinizing hormone-releasing factor (LHRF) was recorded in voltage-clamped bullfrog lumbar sympathetic neurones. At a holding potential of -- 30 mV, LHRF induced a steady inward (depolarizing) current and reduced membrane conductance; at -- 60 mV LHRF produced negligible inward current and ...

journal_title：British journal of pharmacology

authors： Adams PR,Brown DA

更新日期：1980-03-01 00:00:00

abstract：:1 The cardiovascular effects of intravenous desipramine (0.03 and 0.1 mg/kg), maprotiline (0.5 mg/kg), mianserin (1.0 and 3.0 mg/kg) and phentolamine (0.25 mg/kg) were examined and compared in pithed rats. Several experimental procedures were used in order to distinguish between the effects of the compounds on cardiac...

journal_title：British journal of pharmacology

authors： Cavero I,Gomeni R,Lefèvre-Borg F,Roach AG

更新日期：1980-02-01 00:00:00

abstract：:1 The activity pattern of analogues of the enkephalins was determined in four parallel assays, the inhibition of the electrically evoked contraction of the guinea-pig ileum and mouse vas deferens at 36 degrees C and the inhibition of [(3)H]-naltrexone and [(3)H]-leucine-enkephalin binding at 0 to 4 degrees C in homoge...

journal_title：British journal of pharmacology

authors： Kosterlitz HW,Lord JA,Paterson SJ,Waterfield AA

更新日期：1980-02-01 00:00:00

abstract：:1 In cats anaesthetized with pentobarbitone and vagotomized, observations were made on the phrenic nerve action potential and the diaphragm electromyogram (EMG) at constant end-tidal Pco(2). Arterial blood pressure was stabilized by intravenous infusions of noradrenaline.2 Intravenous administration of saxitoxin (STX)...

journal_title：British journal of pharmacology

authors： Borison HL,Culp WJ,Gonsalves SF,McCarthy LE

更新日期：1980-02-01 00:00:00

abstract：:1 gamma-Aminobutyric acid (GABA, 0.1 to 1 mM) had no significant effect on the amplitude, rise time, half decay time or frequency of miniature endplate potentials (m.e.p.ps) at the frog or mouse neuromuscular junctions in vitro. 2 Addition of GABA (1 mM) to preparations previously treated with 11 mM K+-Ringer did not ...

journal_title：British journal of pharmacology

authors： Smart TG

更新日期：1980-01-01 00:00:00

abstract：:1 The binding of [3H]-muscimol, a potent gamma-aminobutyric acid (GABA) receptor agonist, to crude membrane preparations of bovine retina was studied, using a filtration method to isolate membrane-bound ligand. 2 Specific binding was found to be saturable and occurred at two binding sites with affinity constants of 4....

journal_title：British journal of pharmacology

authors： Osborne NN

更新日期：1980-01-01 00:00:00

abstract：:The muscarinic receptor binding of trazodone, a new nontricyclic antidepressant, was compared with established tricyclic antidepressants. The ability to inhibit the binding of [3H]-quinuclidinyl benzilate in vitro was used for comparing atropine-like effects. Trazodone was found to have essentially no activity at the ...

journal_title：British journal of pharmacology

authors： Hyslop DK,Taylor DP

更新日期：1980-01-01 00:00:00

abstract：:1 The effects of piribedil on contractile responses and noradrenaline release evoked by sympathetic nerve stimulation have been studied in the isolated kidney of the rabbit. These effects were compared to those of apomorphine.2 Electrical stimulation (2, 5 and 10 Hz) of sympathetic renal nerves produced frequency-depe...

journal_title：British journal of pharmacology

authors： Chevillard C,Mathieu MN,Recommis D

更新日期：1980-01-01 00:00:00

abstract：:1 Very highly purified (greater than 100,000 u/mg) slow reacting substance of anaphylaxis (SRS-A) has been prepared by reversed phase high pressure liquid chromatographic (HPLC) techniques. 2 High resolution liquid chromatography suggests that SRS-A may exist in at least three distinct forms which are possible tautome...

journal_title：British journal of pharmacology

authors： Blackwell GJ,Burka JF,Flower RJ,Torkington P

更新日期：1980-01-01 00:00:00

abstract：:1. The effects of palytoxin (PTX) isolated from Palythoa tubercurosa were tested on the isolated intra-arterially perfused spinal cord of the frog. The resting and evoked potentials were recorded by means of a sucrose-gap technique. 2. PTX caused a marked depolarization of both ventral and dorsal roots. The minimum ef...

journal_title：British journal of pharmacology

authors： Kudo Y,Shibata S

更新日期：1980-01-01 00:00:00

abstract：:1 Hypothalamic blood flow (HBF) was measured in conscious rabbits by the 133xenon washout technique. 2 Substance P in a dose of 50 or 500 ng increases HBF while 5 ng is without effect. 3 Cholinoceptor blockade, with either atropine or mecamylamine abolishes the vasodilator effect of substance P. 4 Chemical sympathecto...

journal_title：British journal of pharmacology

authors： Klugman KP,Lembeck F,Markowitz S,Mitchell G,Rosendorff C

更新日期：1980-01-01 00:00:00

abstract：:1 The recently discovered benzodiazepine receptor exists in high concentration in the cerebral cortex. We have, therefore, examined the effects of diazepam and chlordiazepoxide on cortical neurone responses to excitatory and inhibitory amino acids and acetylcholine, in the cortex of rats anaesthetized with urethane.2 ...

journal_title：British journal of pharmacology

authors： Assumpção JA,Bernardi N,Brown J,Stone TW

更新日期：1979-12-01 00:00:00

abstract：:1. Unique among the phospholipids, phosphatidylserine depresses brain energy metabolism when injected intravenously into mice in the form of sonicated liposomes. The possibility that this effect results from a metabolic transformation of phosphatidylserine is examined in this paper. 2. A strong enhancement of the phos...

journal_title：British journal of pharmacology

authors： Bigon E,Boarato E,Bruni A,Leon A,Toffano G

更新日期：1979-12-01 00:00:00

abstract：:1 The prostaglandin synthesizing enzymes were found to be present in fat cell ghosts isolated from rabbit adipose tissue. 2 Prostaglandin E2 (PGE2) and PGF2, were synthesized by ghosts after stimulation with adrenocorticotrophic hormone (ACTH). 3 Indomethacin was found to inhibit this synthesis but not the synthesis o...

journal_title：British journal of pharmacology

authors： Lewis GP,Piper PJ,Vigo C

更新日期：1979-11-01 00:00:00

abstract：:1 delta'-trans-Tetrahydrocannabinol (THC) is more active orally in mice than previously thought, as cataleptic responses occur at doses from 0.06 mg/kg upwards, with peak activity at 2 to 4 h after dosing. These doses and peaks correspond well with the effects in man. 2 Comparison with chlorpromazine in mice shows tha...

journal_title：British journal of pharmacology

authors： Fairbairn JW,Pickens JT

更新日期：1979-11-01 00:00:00

abstract：:1 The effects of a subconstrictor dose of histamine (9 x 10(-7) mol/l) on the responses of the isolated perfused ear artery of the rabbit to electrical stimulation (E.S.) and to exogenous noradrenaline (NA) were investigated.2 Both intraluminal (I/L) and extraluminal (E/L) histamine potentiated responses to E.S. and t...

journal_title：British journal of pharmacology

authors： Foldes A,Hall RC

更新日期：1979-11-01 00:00:00

abstract：:1 In the isolated kidney of the rabbit perfused with oxygenated Tyrode solution, we studied the effect of bradykinin on the vasoconstriction evoked by sympathetic nerve stimulation (3Hz, 1 ms) and by injections of noradrenaline (50 to 75 ng) in the presence and in the absence of indomethacin (1 microgram/ml), an inhib...

journal_title：British journal of pharmacology

authors： Malik KU,Nasjletti A

更新日期：1979-10-01 00:00:00

abstract：:1 The venom of the green mamba, Dendroaspis angusticeps, was tested for effects on neuromuscular transmission and skeletal muscle contractility in isolated phrenic nerve-hemidiaphragm preparations of the rat and mouse, chick biventer cervicis muscle preparations and in aneural cultures of embryonic chick skeletal musc...

journal_title：British journal of pharmacology

authors： Barrett JC,Harvey AL

更新日期：1979-10-01 00:00:00

abstract：:1 Salbutamol and disodium cromoglycate were compared for anti-anaphylactic activity against passive anaphylaxis in rat skin and peritoneum in vivo and in rat mast cells and human lung fragments in vitro.2 Salbutamol administered intravenously to rats inhibited cutaneous anaphylaxis, but also inhibited cutaneous respon...

journal_title：British journal of pharmacology

authors： Butchers PR,Fullarton JR,Skidmore IF,Thompson LE,Vardey CJ,Wheeldon A

更新日期：1979-09-01 00:00:00

abstract：:1 Dose-related increases in airways resistance (Raw) and decreases in dynamic lung compliance (Cdyn) were recorded in guinea-pigs and rats following intravenous injection of propranolol and of the cardioselective beta-adrenoceptor blocking drugs, atenolol and practolol. 2 The bronchoconstriction reached a peak in 2 to...

journal_title：British journal of pharmacology

authors： Maclagan J,Ney UM

更新日期：1979-07-01 00:00:00

abstract：:Myoclonus induced by catechol in the guinea-pig is not altered by manipulation of cerebral 5-hydroxytryptamine (5-HT). The administration of catechol does not alter brain levels of 5-HT or its metabolite 5-hydroxyindole acetic acid. This form of myoclonus therefore is not of relevance to the 5-HT-sensitive post-anoxic...

journal_title：British journal of pharmacology

authors： Chadwick D,Jenner P,Marsden CD

更新日期：1979-07-01 00:00:00

abstract：:1 Isolated duodenum of the rat, exposed to ultraviolet (u.v.) light in the presence of NO2 ions, responded with reversible relaxation. 2 The photorelaxation response did not seem to involve any known receptor mechanisms and was independent of any ganglionic or neuronal influences. 3 Changes in the ionic environment of...

journal_title：British journal of pharmacology

authors： Dave KC,Jindal MN,Kelkar VV,Trivedi HD

更新日期：1979-06-01 00:00:00

abstract：:1 The responses of excitatory junctions on locust skeletal muscle fibres to iontophoretically applied L-glutamic acid and DL-ibotenic acid, a rigidly extended analogue of glutamate, were recorded by means of intracellular microelectrodes.2 Iontophoresis of L-glutamate to junctional sites produced transient depolarizat...

journal_title：British journal of pharmacology

authors： Clark RB,Gration KA,Usherwood PN

更新日期：1979-06-01 00:00:00

abstract：:1 The effect of phenoxybenzamine on the efflux of [3H]-noradrenaline and the mechanical response to single pulse excitation of superfused guinea-pig vas deferens was determined to examine the validity of the currently accepted hypothesis of a presynaptic negative feedback system on adrenergic nerve terminals. 2 The ad...

journal_title：British journal of pharmacology

authors： Kalsner S

更新日期：1979-06-01 00:00:00

abstract：:Rabbits treated with 2-deoxy-D-glucose (2DG) (300 mg/kg) show an increased intake of food and water. Pretreatment with haloperidol (1 mg/kg) abolishes the increase in water intake but does not prevent the increase in food intake. ...

journal_title：British journal of pharmacology

authors： Anderson J,Sharman DF,Stephens DB

更新日期：1979-05-01 00:00:00

abstract：:The effect of fluoxetine on uptake of 5-hydroxytryptamine (5-HT) by enteric 5-hydroxytryptaminergic neurones has been analyzed in order to compare further these neurones with 5-HT neurones of the CNS. In addition, the effects of fluoxetine and chlorimipramine on efflux of [3H]-5-HT from the myenteric plexus were also ...

journal_title：British journal of pharmacology

authors： Gershon MD,Jonakait GM

更新日期：1979-05-01 00:00:00

abstract：:1. 5-Hydroxytryptamine (5-HT) stimulates active sodium transport and decreases the passive mucosal to serosal chloride permeability across frog skin. The relative importance of the different regions of the 5-HT molecule in the mediation of these responses has been studied using a range of structurally related compound...

journal_title：British journal of pharmacology

authors： Dalton T

更新日期：1979-04-01 00:00:00

abstract：:1. Histamine release by compound 48/80 was substantially reduced in a time-dependent manner (maximum at 30 min) by pre-incubating mast cells in calcium-free medium at 37 degrees C but not at 2 degrees C. This effect was optimal at pH 7.0 to 7.5. 2. The re-introduction of calcium (0.1 to 3 mmol/l) restored histamine re...

journal_title：British journal of pharmacology

authors： Garland LG,Payne AN

更新日期：1979-04-01 00:00:00

abstract：:1. The release of 5-hydroxytryptamine (5-HT) from the cerebral cortex and caudate nucleus of brainstem-transected cats and from the cerebral cortex of rats anaesthetized with urethane was determined by radioenzymatic and biological assay. 2. The stimulation of nucleus linearis intermedius of raphe doubles the basal 5-...

journal_title：British journal of pharmacology

authors： Aiello-Malmberg P,Bartolini A,Bartolini R,Galli A

更新日期：1979-04-01 00:00:00

abstract：:1. The effects of four specific inhibitors of 5-hydroxytryptamine (K-HT) uptake on morphine-, methadone- or pethidine-induced antinociception was studied in rats. Antinociception was assessed by means of hot plate (55 degrees C) reaction times. The effect of the compounds on the uptake of [3H]-5-HT into rat whole brai...

journal_title：British journal of pharmacology

authors： Sugrue MF

更新日期：1979-04-01 00:00:00