Abstract：
:Synaptic transmission in the isolated olfactory cortex slice from the rat was monitored by recording the surface field potentials evoked on lateral olfactory tract (LOT) stimulation. Catechol (approximately 0.05 to 2 mM) caused a concentration-dependent, partially reversible increase in the amplitudes of all field potentials. In a series of conditioning experiments, catechol (1 mM) potentiated postsynaptic inhibition by a mechanism which was at least partially picrotoxin-insensitive. When the relationship between the stimulus input and evoked output was investigated in picrotoxin-treated slices, for a given tract action potential amplitude, catechol (0.25 and 0.5 mM) increased the amplitude of the field potential known as the N-wave; in contrast, for a given N-wave amplitude, the latency of the population spike was increased. Catechol (1 mM) increased the K+-evoked release of endogenous aspartate by a tetrodotoxin-insensitive mechanism whereas the release of glutamate and gamma-aminobutyric acid (GABA) was unaffected. Catechol (1 mM) had no effect on submaximal depolarizations evoked by L-aspartate, L-glutamate or GABA. It is concluded that catechol potentiates excitatory transmission at the LOT-superficial pyramidal cell synapse, possibly by increasing evoked transmitter release. Other synaptic actions of catechol may be consequent upon this increased excitatory input but the results do not exclude the possibility of separate and distinct actions on polysynaptic transmission.
journal_name
Br J Pharmacoljournal_title
British journal of pharmacologyauthors
Collins GG,Dewhurst DGdoi
10.1111/j.1476-5381.1986.tb10221.xsubject
Has Abstractpub_date
1986-06-01 00:00:00pages
433-40issue
2eissn
0007-1188issn
1476-5381journal_volume
88pub_type
杂志文章abstract：:The chemical trimethylcyclohexanol (TMC) is closely related to menthol, the major component of a terpene preparation with known choleretic and cholelitholytic activity. Its effects on hepatic cholesterol synthesis and bile secretion were examined in the rat. In both acute and long-term dosing experiments TMC significa...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1984.tb10759.x
更新日期：1984-01-01 00:00:00
abstract：:The nature of the neurohypophyseal peptide receptor in the anococcygeus muscles from male mice was investigated. The rank order of potency of naturally occurring peptides was oxytocin greater than Arg-vasotocin greater than Arg-vasopressin greater than Lys-vasopressin, which is similar to that found in the uterus and ...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1986.tb09482.x
更新日期：1986-05-01 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
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1976.tb06968.x
更新日期：1976-01-01 00:00:00
abstract：:1 The actions of 4-(2-hydroxy-3-isopropylaminopropoxy) phenyl acetamide (ICI 66082), a new beta-adrenoceptor blocking drug, on the twitch response of the isolated papillary muscle of the rabbit and on dP/dt max and free heart rate of a denervated dog heart preparation, are described.2 ICI 66082 (up to 1 mg/ml) did not...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1974.tb09644.x
更新日期：1974-06-01 00:00:00
abstract：:1. Human formyl peptide-receptor-like-1 (FPRL-1) is a promiscuous G protein-coupled receptor (GPCR), and belongs to a chemoattractant receptor family protein. This receptor has been reported to interact with various host-derived peptides and lipids involved in inflammatory responses. We described here, a novel role fo...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0705592
更新日期：2004-01-01 00:00:00
abstract：:Dopamine, noradrenaline (NA) and adrenaline (Ad) depletion by 6-hydroxydopamine (6-OHDA) and pargyline plus 6-OHDA was investigated in the cat left ventricle, mesenteric and renal arteries, renal cortex, renal medulla and adrenal medulla. Catecholamine concentrations in plasma were also analyzed in these two experimen...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1985.tb08903.x
更新日期：1985-10-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Cerebrovascular remodelling is one of the important risk factors of stroke. The underlying mechanisms are unclear. Integrin β3 and volume-regulated ClC-3 Cl(-) channels have recently been implicated as important contributors to vascular cell proliferation. Therefore, we investigated the role of i...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/bph.12654
更新日期：2014-07-01 00:00:00
abstract：:It is well documented that metabolic syndrome (i.e. a group of risk factors, such as abdominal obesity, elevated blood pressure, elevated fasting plasma glucose, high serum triglycerides and low cholesterol level in high-density lipoprotein), which raises the risk for heart disease and diabetes, is associated with inc...
journal_title：British journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1111/bph.12960
更新日期：2015-03-01 00:00:00
abstract：:1. The effect of the potassium channel openers, NIP-121 and cromakalim, on agonist-induced relaxation of the guinea-pig isolated trachea was investigated and the results were compared with those in the epithelium-denuded trachea. 2. Tracheal strips were incubated with a potassium channel opener or vehicle for 30 min i...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1992.tb13416.x
更新日期：1992-12-01 00:00:00
abstract：:1 The concentrations of p- and m-tyramine were measured in the caudate nucleus of the rat brain following subcutaneous injection of reserpine or intraventricular injection of 6-hydroxydopamine, beta-Phenylethylamine was analysed in the hypothalamus after reserpine. 2 Endogenous levels of p-tyramine and m-tyramine in t...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1977.tb06996.x
更新日期：1977-01-01 00:00:00
abstract：:1. The bovine pulmonary vein contracts in response to acetylcholine, histamine, 5-hydroxytryptamine and bradykinin. The tissue is particularly sensitive to 5-hydroxytryptamine (>0.1 ng/ml). Specific Schultz-Dale reactions were elicited in the pulmonary vein in response to horse plasma.2. The Schultz-Dale reaction is i...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：
更新日期：1971-10-01 00:00:00
abstract：:1. A new method for the estimation of 4-hydroxy-3-methoxyphenylethylamine (3-methoxytyramine) in brain tissue is described. This is based on the formation of a fluorescent derivative by oxidation with potassium ferricyanide in ammonium hydroxide solution.2. The effects of some drugs on the concentration of 3-methoxyty...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1971.tb07136.x
更新日期：1971-08-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Adrenoceptors can associate with cardiac caveolae. To investigate the function of vascular caveolae, adrenoceptor-mediated effects were compared in the saphenous artery of caveolin-1 knockout (cav-1KO) and wild-type (WT) mice. EXPERIMENTAL APPROACH:Electronmicroscopy was used to detect caveolae....
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0706980
更新日期：2007-02-01 00:00:00
abstract：:1. We have shown earlier that pilocarpine strongly inhibits mouse and human liver coumarin 7-hydroxylase activity of CYP 2A and pentoxyresorufin O-deethylase activity of CYP 2B in vitro. Since pilocarpine, like coumarin, contains a lactone structure we have studied in more detail its inhibitory potency on mouse and hu...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1995.tb17217.x
更新日期：1995-11-01 00:00:00
abstract：:1. The diversity of alpha(2) and purinergic autoreceptor actions on action potential evoked calcium transients in single varicosities has been investigated using the calcium indicator Oregon Green 488 BAPTA-1. 2. During long trains of impulses (10 Hz for 30 s), the change in calcium concentration in varicosities from ...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0702984
更新日期：1999-12-01 00:00:00
abstract：:The binding of [3H]-iloprost (ZK36374) to NCB-20 membranes revealed a single population of high affinity receptors (KD = 9.55 nM, Bmax = 431 fmol mg-1 protein) and a low affinity, non-saturable binding component. Desensitization of prostacyclin-responsiveness of NCB-20 cells is induced by culture in the presence of th...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1985.tb08852.x
更新日期：1985-05-01 00:00:00
abstract：:Ever increasing use of engineered carbon nanoparticles in nanopharmacology for selective imaging, sensor or drug delivery systems has increased the potential for blood platelet-nanoparticle interactions. We studied the effects of engineered and combustion-derived carbon nanoparticles on human platelet aggregation in v...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0706386
更新日期：2005-11-01 00:00:00
abstract：BACKGROUND AND PURPOSE:During angiogenesis, quiescent endothelial cells (ECs) are activated by various stimuli to form new blood vessels from pre-existing ones in physiological and pathological conditions. Many research groups have shown that hydrogen sulfide (H2 S), the newest member of the gasotransmitter family, act...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/bph.14574
更新日期：2020-02-01 00:00:00
abstract：:1. Alterations in the levels of intracellular calcium ([Ca2+]i) and D-myo-inositol-1,4,5-trisphosphate (InsP3) were measured in the murine neuroblastoma cell line clone, N1E-115, by use of the calcium-sensitive dye, fura-2 and a radioreceptor assay, respectively. 2. Exposure of the cells to ATP (100 microM) elicited r...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1992.tb13410.x
更新日期：1992-12-01 00:00:00
abstract：:The relaxin family peptides, although structurally closely related to insulin, act on a group of four G protein-coupled receptors now known as Relaxin Family Peptide (RXFP) Receptors. The leucine-rich repeat containing RXFP1 and RXFP2 and the small peptide-like RXFP3 and RXFP4 are the physiological targets for relaxin...
journal_title：British journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1038/sj.bjp.0707140
更新日期：2007-03-01 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
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1979.tb07863.x
更新日期：1979-04-01 00:00:00
abstract：:1 The possible involvement of N-methyl-D-aspartate (NMDA)-receptors in epileptiform synaptic activity in the kainic acid (KA) lesioned hippocampus was investigated. In this chronic model of epilepsy there is a loss of both the early and the late components of synaptic inhibition as well as changes in the membrane prop...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1987.tb11280.x
更新日期：1987-08-01 00:00:00
abstract：:1. The pharmacology of the slow afterhyperpolarization (sAHP) was studied in cultured rat hippocampal pyramidal neurones. 2. Clotrimazole, its in vivo metabolite, 2-chlorophenyl-bisphenyl-methanol (CBM) and the novel analogues, UCL 1880 and UCL 2027, inhibited the sI(AHP) with similar IC50s (1-2 microM). 3. Clotrimazo...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0703895
更新日期：2001-02-01 00:00:00
abstract：:1. By use of a number of analogues of adenine nucleotides, the structure-activity relationships of the human platelet receptor for adenosine 5'-diphosphate (ADP) mediating increases in intracellular calcium were investigated, and compared with the known structure-activity relationships for induction by ADP of platelet...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1993.tb12869.x
更新日期：1993-03-01 00:00:00
abstract：:The properties of the ATPase released during electrical field stimulation (EFS) (8 Hz, 25 s) of the sympathetic nerves of the superfused rabbit isolated vas deferens were investigated. Superfusate collected during EFS rapidly metabolised exogenous ATP (100 microM) and 50% was broken down in 5.67+/-0.65 min. The main m...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0703662
更新日期：2000-11-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Protease-activated receptor 1 (PAR1) has been demonstrated to be involved in the pathogenesis of viral diseases. However, its role remains controversial. The goal of our study was to investigate the contribution of PAR1 to respiratory syncytial virus (RSV) and human metapneumovirus (hMPV) infecti...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/bph.14084
更新日期：2018-01-01 00:00:00
abstract：:1. Vascular endothelial and smooth muscle cells generate nitric oxide (NO) via different nitric oxide synthase (NOS) isozymes. Activation of the endothelial constitutive NOS (ecNOS) contributes to the maintenance of cardiovascular homeostasis, whereas expression of the endotoxin- and cytokine-inducible pathway (iNOS) ...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1996.tb15510.x
更新日期：1996-07-01 00:00:00
abstract：BACKGROUND AND PURPOSE:High resting heart rate is a predictor for total and cardiovascular mortality independent of other risk factors in patients with coronary artery disease. We tested the hypothesis that a reduction of resting heart rate with the cardiac pacemaker I(f) current inhibitor ivabradine prevents the endot...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/bjp.2008.116
更新日期：2008-06-01 00:00:00
abstract：BACKGROUND AND PURPOSE:The thiazolidine carboxylic acid, BML-241, has been proposed as a lead compound in development of selective antagonists at the sphingosine-1-phosphate receptor (S1P3), based on its inhibition of the rise in intracellular calcium concentrations ([Ca2+]i) in HeLa cells overexpressing S1P receptors....
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0706872
更新日期：2006-10-01 00:00:00
abstract：:1. Salmeterol is a potent, selective and long acting beta 2-adrenoceptor agonist. In vitro, salmeterol exerts 'reassertion' relaxation of airways smooth muscle. Reassertion relaxation refers to the capacity of salmeterol to cause repeated functional antagonism of induced contraction when airway smooth muscle is interm...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1996.tb16690.x
更新日期：1996-03-01 00:00:00
