Abstract:
:1 The effects of isoprenaline, propranolol and phosphodiesterase inhibitors on (3)H-transmitter overflow elicited by low frequency nerve stimulation were determined in the isolated perfused spleen of the cat.2 (-)-Isoprenaline (0.14, 1.4, and 14 nM) produced a concentration-dependent increase in [(3)H]-transmitter overflow evoked by nerve stimulation at 1 Hz and was more effective at 1 Hz than at 2 hertz.3 A concentration of propranolol (0.1 muM), devoid of neurone blocking activity, blocked this effect of (-)-isoprenaline. These results are compatible with the presence of beta-adrenoceptors in the noradrenergic nerve endings of the cat spleen.4 (+)-Isoprenaline (140 nM) failed to increase the release of radioactivity induced by nerve stimulation, indicating that the beta-adrenoceptor mediating the facilitation of transmitter release was stereospecific.5 The increase in (3)H-transmitter overflow induced by nerve stimulation during exposure to the phosphodiesterase inhibitor, papaverine (27 muM) was more pronounced than that obtained in the presence of 3-isobutyl-1-methyl xanthine (IBMX) 0.5 mM. The facilitation in transmitter release induced by papaverine was not correlated with the granular effect produced by this drug.6 In the presence of papaverine, the concentration-effect curve for (-)-isoprenaline on transmitter release was shifted to the left and its maximum was increased. In addition, propranolol significantly reduced the enhancement in noradrenaline release obtained by exposure to papaverine under conditions in which the granular effect produced by the phosphodiesterase inhibitor was even greater than in the absence of the beta-blocker.7 It is concluded that activation of presynaptic beta-adrenoceptors in the perfused cat spleen leads to an enhancement in transmitter release which appears to be linked to an increase in cyclic adenosine 3',5'-monophosphate levels in noradrenergic nerve endings.
journal_name
Br J Pharmacoljournal_title
British journal of pharmacologyauthors
Celuch SM,Dubocovich ML,Lander SZdoi
10.1111/j.1476-5381.1978.tb07779.xsubject
Has Abstractpub_date
1978-05-01 00:00:00pages
97-109issue
1eissn
0007-1188issn
1476-5381journal_volume
63pub_type
杂志文章abstract::We studied the effects of endothelium-derived relaxing factor (EDRF), bovine retractor penis muscle inhibitory factor and sodium nitroprusside, three stimulants of guanylate cyclase, on the in vitro aggregation of washed human platelets. Platelet aggregation induced either by collagen or by the thromboxane A2 analogue...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1987.tb11221.x
更新日期:1987-04-01 00:00:00
abstract::1. We have investigated the effects of RP 73401, a novel, potent and highly selective cyclic nucleotide phosphodiesterase (PDE) type IV inhibitor, in guinea-pig and rat models of bronchoconstriction and allergic inflammation. In some models, the effects of RP 73401 have been compared with those of the standard PDE typ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1994.tb17156.x
更新日期:1994-12-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Glucocorticoids appear to control Na⁺ absorption in pulmonary epithelial cells via a mechanism dependent upon serum and glucocorticoid-inducible kinase 1 (SGK1), a kinase that allows control over the surface abundance of epithelial Na⁺ channel subunits (α-, β- and γ-ENaC). However, not all data s...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2012.01860.x
更新日期:2012-06-01 00:00:00
abstract::1 Nine antibiotic compounds in common use were studied to determine their ability to affect intestinal motility in vitro, in the guinea-pig ileum and rabbit colon. 2 Ampicillin, doxycycline, mecillinam and metronidazole were without effect over a concentration range which included typical serum levels found when these...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1981.tb10453.x
更新日期:1981-06-01 00:00:00
abstract::1. We studied the effect of bradykinin on plasma exudation in the airways of the anaesthetized guinea-pig in vivo. Tissue content of extravasated Evans blue dye was used as an index of protein exudation in the larynx, trachea, main bronchi and intrapulmonary airways (i.p.a.). 2. Bradykinin increased the content of Eva...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1990.tb14150.x
更新日期:1990-11-01 00:00:00
abstract::1. The actions on the taenia of 4-(m-chlorophenylcarbamoyloxy)-2-butynyl-trimethylammonium chloride (McN-A-343), N-benzyl-3-pyrrolidyl acetate methobromide (AHR-602), tetramethylammonium (TMA) and choline phenyl ether have been examined and compared with the actions of acetylcholine, nicotine and 1,1-dimethyl-4-phenyl...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1969.tb08303.x
更新日期:1969-05-01 00:00:00
abstract::Melatonin receptors are seven transmembrane-spanning proteins belonging to the GPCR superfamily. In mammals, two melatonin receptor subtypes exist - MT1 and MT2 - encoded by the MTNR1A and MTNR1B genes respectively. The current review provides an update on melatonin receptors by the corresponding subcommittee of the I...
journal_title:British journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1111/bph.13536
更新日期:2016-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Early soluble epoxide hydrolase inhibitors (sEHIs) such as 12-(3-adamantan-1-yl-ureido)-dodecanoic acid (AUDA) are effective anti-hypertensive and anti-inflammatory agents in various animal models. However, their poor metabolic stability and limited water solubility make them difficult to use pha...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2008.00009.x
更新日期:2009-01-01 00:00:00
abstract::1. Immunohistochemical and functional studies have been performed to localize and determine the effects of neuropeptide Y (NPY) in the rat seminal vesicle. 2. An abundant presence of NPY-immunoreactive nerves, mainly concentrated in the smooth muscle layer of the seminal vesicle was found. Chronic 6-hydroxydopamine tr...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1994.tb17074.x
更新日期:1994-11-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Conventional determination of agonist efficacy at G-protein coupled receptors is measured by stimulation of guanosine-5'-γ-thiotriphosphate (GTPγS) binding. We analysed the role of guanosine diphosphate (GDP) in the process of activation of the M₂ muscarinic acetylcholine receptor and provide evi...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2010.01081.x
更新日期:2011-03-01 00:00:00
abstract::1. The role of the sympathetic nervous system in experimental hypertension and associated changes in aortic sodium and potassium was studied using normal and immunosympathectomized Sprague-Dawley rats.2. A single injection of antiserum to nerve-growth factor to rats at birth produced less intensive destruction of the ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1970.tb09911.x
更新日期:1970-10-01 00:00:00
abstract::AMPA-type glutamate receptors are one of the most dynamic components of excitatory synapses. Their regulated addition and removal from synapses leads to long-lasting forms of synaptic plasticity, known as long-term potentiation (LTP) and long-term depression (LTD). In addition, AMPA receptors reach their synaptic targ...
journal_title:British journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1038/sj.bjp.0707525
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Bortezomib (Velcade®) is a breakthrough treatment for multiple myeloma, significantly improving patient survival. However, its use is limited by painful neuropathy often resulting in dose reduction/cessation of first-line treatment due to lack of treatment. The aim of this study was to characteri...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.14063
更新日期:2017-12-01 00:00:00
abstract::1. Alprenolol, a beta-adrenoceptor blocking drug reported to have the same potency as propranolol in vitro and in vivo, was found to be four times more active than procaine as a local anaesthetic on frog sciatic nerve.2. At doses of 0.125 mg/kg and above alprenolol protected anaesthetized guinea-pigs against ouabain-i...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1970.tb09884.x
更新日期:1970-04-01 00:00:00
abstract::1. Losigamone is a novel anticonvulsant the mechanism of action of which is not known. This study investigated the effect of losigamone on spontaneous, NMDA- and AMPA-induced depolarizations in the cortical wedge preparation of the DBA/2 mouse (which are susceptible to sound-induced seizures) and on endogenous amino a...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0701539
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Up-regulation of thioredoxin interacting protein (TXNIP), an endogenous inhibitor of thioredoxin (Trx), compromises cellular antioxidant and anti-apoptotic defences and stimulates pro-inflammatory cytokines expression, implying a role for TXNIP in apoptosis. Here we have examined the causal role ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2011.01336.x
更新日期:2011-09-01 00:00:00
abstract::Peroxynitrite, a potent oxidant formed by the reaction of nitric oxide and superoxide causes thymocyte necrosis, in part, via activation of the nuclear enzyme poly(ADP-ribose) synthetase (PARS). The cytotoxic PARS pathway initiated by DNA strand breaks and excessive PARS activation has been shown to deplete cellular e...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702332
更新日期:1999-02-01 00:00:00
abstract::1. Histamine and carbachol produced concentration-related increases in the accumulation of 3H-inositol phosphates in slices of bovine tracheal smooth muscle. 2. Noradrenaline alone produced a small stimulation of 3H-inositol phosphate accumulation which was inhibited by the alpha-adrenoceptor antagonist phentolamine. ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1988.tb11757.x
更新日期:1988-12-01 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
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1980.tb14547.x
更新日期:1980-03-01 00:00:00
abstract::The response to vasoactive agents of microvessels of the rat was tested in vivo by direct microscopic observation of the exteriorized mesentery and assessment of cutaneous vascular permeability changes with Evans blue. The constrictor response to a standard amount of noradrenaline in mesenteric microvessels was fully ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1984.tb16217.x
更新日期:1984-11-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Preclinical cardiovascular safety studies (CVS) have been compared between facilities with respect to their sensitivity to detect drug-induced QTc prolongation (ΔQTc). Little is known about the consistency of quantitative ΔQTc predictions that are relevant for translation to humans. EXPERIMENTAL...
journal_title:British journal of pharmacology
pub_type: 杂志文章,meta分析
doi:10.1111/bph.13218
更新日期:2015-09-01 00:00:00
abstract::1. In circular muscle strips of the fundus and corpus of guinea-pig stomach, mechanical responses to catecholamines were studied mainly in the presence of a prostaglandin biosynthesis inhibitor, meclofenamate. 2. Normal preparations developed considerable muscle tone, and adrenaline (10-100 microM) in the presence of ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1990.tb14162.x
更新日期:1990-12-01 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
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1987.tb11398.x
更新日期:1987-12-01 00:00:00
abstract::1. Lowering of the extracellular Mg(2+)-concentration induces various patterns of epileptiform activity in combined rat entorhinal cortex-hippocampal brain slices. After a prolonged period of exposure to Mg(2+)-free medium seizure-like events in the entorhinal cortex change to a state of late recurrent discharges whic...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1996.tb15710.x
更新日期:1996-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Lysophosphatidylinositol (LPI), a lipid signalling molecule, activates GPR55 and elevates intracellular Ca(2+). Here, we examine the actions of LPI in the rat resistance mesenteric artery and Ca(2+) responses in endothelial cells isolated from the artery. EXPERIMENTAL APPROACH:Vascular responses...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.13107
更新日期:2015-06-01 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
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702746
更新日期:1999-09-01 00:00:00
abstract::1. The effect of basal tension (transmural tensions 235 +/- 29 mg wt (low tension: equivalent to approximately 16 mmHg) and 305 +/- 34 mg wt (high tension: equivalent to 35 mmHg)) on rat pulmonary resistance artery responses to endothelin-1 (ET-1) and the selective ET(B)-receptor agonist sarafotoxin S6c (S6c) were stu...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0701682
更新日期:1998-03-01 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
pub_type: 杂志文章
doi:10.1038/sj.bjp.0704221
更新日期:2001-09-01 00:00:00
abstract::1. Effects of oestradiol on the electrical and mechanical properties of the rabbit basilar artery were investigated by use of microelectrode, patch-clamp and isometric tension recording methods. 2. Oestradiol (10 nM-100 microM) relaxed arterial tissue pre-contracted by excess [K]o solution (30 mM) in a concentration-d...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1996.tb15198.x
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Orally administered withanoside IV (a compound isolated from the roots of Withania somnifera) improved memory deficits in mice with a model of Alzheimer's disease induced by the amyloid peptide Abeta(25-35). Sominone, an aglycone of withanoside IV, was identified as an active metabolite after ora...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2009.00313.x
更新日期:2009-08-01 00:00:00