Evidence that the agonist action of dynorphin A(1-8) in the guinea-pig myenteric-plexus may be mediated partly through conversion to [Leu5]enkephalin.

abstract：:Current treatments of schizophrenia are compromised by their inability to treat all symptoms of the disease and their side-effects. Whilst existing antipsychotic drugs are effective against positive symptoms, they have negligible efficacy against the prefrontal cortex (PFC)-associated cognitive deficits and negative s...

journal_title：British journal of pharmacology

authors： Pratt JA,Winchester C,Egerton A,Cochran SM,Morris BJ

更新日期：2008-03-01 00:00:00

abstract：:The sensitivity of the uterus to the inhibition of contractions by salbutamol, diltiazem or nifedipine was assessed in the ovariectomized, post-partum rat by dose-response curves following bolus intravenous (i.v.) administration. These tests were performed before (day 1), immediately after a 20 h i.v. infusion of salb...

journal_title：British journal of pharmacology

authors： Abel MH,Hollingsworth M

更新日期：1986-07-01 00:00:00

abstract：:1. The drug HA-966 (1-hydroxy-3-amino-pyrrolidone-2), which chemically resembles the cyclic form of GABA, has been studied for neuro-pharmacological properties and for effects on the catecholamine content of the corpus striatum.2. The acute effects on spontaneous behaviour of rodents included flaccid catalepsy and rev...

journal_title：British journal of pharmacology

authors： Bonta IL,De Vos CJ,Grijsen H,Hillen FC,Noach EL,Sim AW

更新日期：1971-11-01 00:00:00

abstract：:1. Leukotriene B(4) (LTB(4)) stimulation of guinea-pig peritoneal eosinophils, induced a biphasic activation of the NADPH oxidase composed of a rapid (<3 min) phase mediated by non-adherent cells and a sustained (3 - 120 min) phase mediated by CD11b/CD18 adherent eosinophils. Studies were undertaken to compare the int...

journal_title：British journal of pharmacology

authors： Lynch OT,Giembycz MA,Barnes PJ,Lindsay MA

更新日期：2001-10-01 00:00:00

abstract：:1. Acute moderate hypoxia modifies the catalytic activity and expression of certain isoenzymes of hepatic cytochrome P450 (P450). The aim of this study was to document whether hypoxia affects hepatic P450 directly or through the release of serum mediators. 2. Rabbits were subjected to a FiO(2) of 8% for 48 h, sacrific...

journal_title：British journal of pharmacology

authors： Fradette C,Bleau AM,Pichette V,Chauret N,Du Souich P

更新日期：2002-11-01 00:00:00

abstract：:Levetiracetam, the alpha-ethyl analogue of the nootropic piracetam, is a widely used antiepileptic drug (AED) that provides protection against partial seizures and is also effective in the treatment of primary generalized seizure syndromes including juvenile myoclonic epilepsy. Levetiracetam was discovered in 1992 thr...

journal_title：British journal of pharmacology

authors： Rogawski MA

更新日期：2008-08-01 00:00:00

abstract：:Hydrogen sulfide (H(2)S) is described as a mediator of diverse biological effects, and is known to produce irritation and injury in the lung following inhalation. Recently, H(2)S has been found to cause contraction in the rat urinary bladder via a neurogenic mechanism. Here, we studied whether sodium hydrogen sulfide ...

journal_title：British journal of pharmacology

authors： Trevisani M,Patacchini R,Nicoletti P,Gatti R,Gazzieri D,Lissi N,Zagli G,Creminon C,Geppetti P,Harrison S

更新日期：2005-08-01 00:00:00

abstract：:Histamine has been one of the most studied substances in medicine, playing a major role in diverse (patho)physiological processes. It elicits its multifaceted modulatory functions by activating four types of GPCRs, designated as H1-4 . Despite the heterogeneity and the complexity of histamine receptor pharmacology, ma...

journal_title：British journal of pharmacology

authors： Tiligada E,Ennis M

更新日期：2020-02-01 00:00:00

abstract：:Des-Arg9-bradykinin (des-Arg9-BK) caused endothelium-dependent relaxations in human, isolated coronary arteries which upregulated with in vitro incubation time. Relaxations to des-Arg9-BK were inhibited by the B1 receptor antagonist, des-Arg9-[Leu3]-BK (pK(B), 6.14 +/- 0.11) but were unaffected by the B2 receptor anta...

journal_title：British journal of pharmacology

authors： Drummond GR,Cocks TM

更新日期：1995-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Interstitial lung disease accounts for a group of chronic and progressive disorders associated with severe pulmonary vascular remodelling, peripheral vascular rarefaction and fibrosis, thus limiting lung function. We have previously shown that Akt is necessary for myofibroblast differentiation, a...

journal_title：British journal of pharmacology

authors： Abdalla M,Sabbineni H,Prakash R,Ergul A,Fagan SC,Somanath PR

更新日期：2015-08-01 00:00:00

abstract：:1. Inhibition of mechanical activity in longitudinal muscle strips of rabbit duodenum was induced by perivascular and intramural nerve stimulation.2. The effects of perivascular stimulation were abolished by phentolamine + propranolol, guanethidine, reserpine and by tetrodotoxin. The effects of intramural stimulation ...

journal_title：British journal of pharmacology

authors： Weston AH

更新日期：1973-06-01 00:00:00

abstract：:1. Mesangial cell proliferation is observed in a number of kidney diseases. The sympathetic cotransmitter ATP is suspected to play a major role in proliferative processes. Therefore, the effects of exogenous ATP on human mesangial cells in culture were studied. 2. Fresh human kidney cortex was processed to obtain mesa...

journal_title：British journal of pharmacology

authors： Vonend O,Grote T,Oberhauser V,Von Kügelgen I,Rump LC

更新日期：2003-07-01 00:00:00

abstract：:1. In the present study we have characterized the parathyroid hormone (PTH)-induced calcium signalling in 293 cells stably transfected with the human PTH receptor cDNA. In these cells, human PTH-1(1-38) strongly stimulates adenosine 3':5'-cyclic monophosphate (cyclic AMP) formation (EC50 = 0.39 nM) but fails to activa...

journal_title：British journal of pharmacology

authors： Seuwen K,Boddeke HG

更新日期：1995-04-01 00:00:00

abstract：:1. Murine left atrium lacks inotropic beta(2)-adrenoceptor function. We investigated whether beta(2)-adrenoceptors are involved in the cardiostimulant effects of (-)-adrenaline on spontaneously beating right atria and paced right ventricular myocardium of C57BL6 mice. We also studied a negative inotropic effect of (-)...

journal_title：British journal of pharmacology

authors： Heubach JF,Rau T,Eschenhagen T,Ravens U,Kaumann AJ

更新日期：2002-05-01 00:00:00

abstract：:1. Hamster stomach strips in vitro are useful test preparations for the assay of prostaglandins E and F in the nanogram concentration range. Three-minute cycles can be used for long periods without spontaneous contractions or significant base-line instability.2. The mean percentage error and the precision index of six...

journal_title：British journal of pharmacology

authors： Ubatuba FB

更新日期：1973-12-01 00:00:00

abstract：:Forty-eight isolated rat hearts were perfused with Krebs solution and with [(3)H]-(-)-noradrenaline ([(3)H]-NA) containing 4.5 nCi/ml in 50 ng/ml, as described by Iversen (1963). To groups of six, cocaine was added to [(3)H]-NA in concentrations of 400 nM, 2 and 10 muM. To the rest Tween 80, 25 mug/ml was added to [(3...

journal_title：British journal of pharmacology

authors： Graham JD,Lewis MJ,Li DM

更新日期：1974-07-01 00:00:00

abstract：:1. In isolated detrusor strips from the guinea-pig urinary bladder, contractile responses to electrical field stimulation were mostly mediated by neurally released acetylcholine (ACh) and adenosine 5'-triphosphate (ATP). 2. 5-Hydroxytryptamine (5-HT) produced a concentration-dependent increase in the amplitude of stim...

journal_title：British journal of pharmacology

authors： Messori E,Rizzi CA,Candura SM,Lucchelli A,Balestra B,Tonini M

更新日期：1995-06-01 00:00:00

abstract：:Mast cells participate in allergies, and also in immunity and inflammation by secreting proinflammatory cytokines. Flavonoids are naturally occurring polyphenolic plant compounds, one group of which -- the flavonols, inhibits histamine and some cytokine release from rodent basophils and mast cells. However, the effect...

journal_title：British journal of pharmacology

authors： Kempuraj D,Madhappan B,Christodoulou S,Boucher W,Cao J,Papadopoulou N,Cetrulo CL,Theoharides TC

更新日期：2005-08-01 00:00:00

abstract：:1. The effects of several drugs, including antagonists of vasoactive intestinal peptide (VIP), and antisera to VIP or peptide histidine isoleucine (PHI), on relaxation responses of guinea-pig isolated trachea to electrical field stimulation (EFS) have been examined. 2. beta-Adrenoceptor blockade with propranolol only ...

journal_title：British journal of pharmacology

authors： Ellis JL,Farmer SG

更新日期：1989-03-01 00:00:00

abstract：:1 Eleven analogues of sodium cromoglycate have been tested for their ability to suppress histamine release induced by anti-IgE from passively sensitized human lung fragments in vitro. 2 With the exception of WY 16922, which released histamine at high concentrations, all inhibited histamine release in a linear dose-rel...

journal_title：British journal of pharmacology

authors： Church MK,Gradidge CF

更新日期：1980-10-01 00:00:00

abstract：:1. The present study was aimed at elucidating the apoptosis inhibitory properties of the cyanoguanidine CHS 828. CHS 828 exhibits impressive cytotoxic activity in vitro and in vivo. Apoptosis is not its main mode of cytotoxic effect, and we have previously proposed a dual mechanism, where CHS 828 inhibits its own cell...

journal_title：British journal of pharmacology

authors： Martinsson P,Ekelund S,Nygren P,Larsson R

更新日期：2002-10-01 00:00:00

abstract：:1. The actions of bretylium tosylate on neuromuscular transmission in the rat phrenic nerve diaphragm preparation have been investigated by electro-2. On the guinea-pig ileum, threshold doses elicit repeated maximal spike contractions which are blocked by atropine. In the presence of atropine, higher concentrations of...

journal_title：British journal of pharmacology

authors： Clineschmidt BV,Geller RG,Govier WC,Pisano JJ,Tanimura T

更新日期：1971-04-01 00:00:00

abstract：:1. We previously demonstrated that cyclopiazonic acid (CPA), an inhibitor of Ca(2+)-ATPase in the sarcoplasmic reticulum, induced rhythmic relaxations of active tension in the endothelium-denuded small arteries of the mesentery and the ear of the rabbit, but that this agent failed to induce rhythmic responses in the e...

journal_title：British journal of pharmacology

authors： Omote M,Mizusawa H

更新日期：1996-05-01 00:00:00

abstract：:The S-S reducing agent, dithiothreitol (DTT) altered the properties of nicotinic receptors in rat superior cervical ganglia such that (i) carbachol became less active as a depolarizing agent and (ii) bromo-acetylcholine produced an irreversible depolarization. The latter was temporarily annulled by hexamethonium (whic...

journal_title：British journal of pharmacology

authors： Brown DA,Kwiatkowski D

更新日期：1976-01-01 00:00:00

abstract：:1. The goal of this study was to determine if an increase in cytoplasmic calcium concentration ([Ca2+]i), in the absence of additional second messengers derived from membrane phospholipid turnover, is a sufficient signal to induce chloride secretion across monolayers of the human colonic epithelial line, T84. 2. Thaps...

journal_title：British journal of pharmacology

authors： Kachintorn U,Vajanaphanich M,Traynor-Kaplan AE,Dharmsathaphorn K,Barrett KE

更新日期：1993-06-01 00:00:00

abstract：:1. It has been reported that activation of beta-adrenoceptors may be responsible for the hyperaemic response of the hepatic artery to portal venous blood flow reduction. 2. The effect of beta-adrenoceptor blockade on the hepatic arterial response to portal vein occlusion was investigated in 6 anaesthetized dogs. A sid...

journal_title：British journal of pharmacology

authors： Alexander B,Blumgart LH,Mathie RT

更新日期：1989-02-01 00:00:00

abstract：:1 The tension developed in the guinea-pig cremaster was recorded during spontaneous activity and electrical stimulation. Spontaneous rhythmic contraction was observed in many preparations, particularly in the tip of the cremaster. These contractions were very slow, lasting about 20 s and occuring at about 2 min interv...

journal_title：British journal of pharmacology

authors： Ninomiya JG

更新日期：1975-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:N-arachidonyl dopamine (NADA) has been identified as a putative endocannabinoid, but there is little information about which signalling pathways it activates. The purpose of this study was to identify the signalling pathways activated by NADA in vitro. EXPERIMENTAL APPROACH:Human or rat cannabin...

journal_title：British journal of pharmacology

authors： Redmond WJ,Cawston EE,Grimsey NL,Stuart J,Edington AR,Glass M,Connor M

更新日期：2016-01-01 00:00:00

abstract：:Homocysteine is a sulphur-containing non-proteinogenic amino acid. Hyperhomocysteinaemia (HHcy), the pathogenic elevation of plasma homocysteine as a result of an imbalance of its metabolism, is an independent risk factor for various vascular diseases, such as atherosclerosis, hypertension, vascular calcification and ...

journal_title：British journal of pharmacology

authors： Fu Y,Wang X,Kong W

更新日期：2018-04-01 00:00:00

abstract：:N-ethylmaleimide (NEM) has been reported to interact with the GTP-binding Ni-protein; we have examined its effect on adenosine receptor binding in feline cortical membranes and on adenosine-receptor mediated effects on cyclic AMP accumulation in rat hippocampal slices. Treatment of cortical membranes with NEM (100 mic...

journal_title：British journal of pharmacology

authors： Fredholm BB,Lindgren E,Lindström K

更新日期：1985-10-01 00:00:00