Investigation of the effects of platelet-activating factor (PAF) on ion transport and prostaglandin synthesis in human colonic mucosa in vitro.

abstract：:Monocytes and macrophages provide key targets for the action of novel anti-inflammatory therapeutics targeted at inhibition of PDE4 cAMP-specific phosphodiesterases. PDE4 enzymes provide the dominant cAMP phosphodiesterase activity in U937 human monocytic cells. Differentiation of U937 monocytic cells to a macrophage-...

journal_title：British journal of pharmacology

authors： Shepherd MC,Baillie GS,Stirling DI,Houslay MD

更新日期：2004-05-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The effect of age on the distribution of morphine and morphine-3-glucuronide (M3G) across the blood-brain barrier (BBB) was studied in a sheep model utilizing intracerebral microdialysis. The effect of neonatal asphyxia on brain drug distribution was also studied. EXPERIMENTAL APPROACH:Microdial...

journal_title：British journal of pharmacology

authors： Bengtsson J,Ederoth P,Ley D,Hansson S,Amer-Wåhlin I,Hellström-Westas L,Marsál K,Nordström CH,Hammarlund-Udenaes M

更新日期：2009-07-01 00:00:00

abstract：:1. Nociceptive thresholds to noxious mechanical (paw pressure) and thermal (tail flick) stimuli were recorded in conscious rats. The effects of three selective kappa-opioid receptor agonists on the responses to these stimuli were determined following intravenous, intracerebroventricular or intrathecal administration. ...

journal_title：British journal of pharmacology

authors： Leighton GE,Rodriguez RE,Hill RG,Hughes J

更新日期：1988-03-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Cannabidiol (CBD) has emerged as an interesting compound with therapeutic potential in several CNS disorders. However, whether it can modulate synaptic activity in the CNS remains unclear. Here, we have investigated whether CBD modulates synaptic transmission in rat hippocampal cultures and acute...

journal_title：British journal of pharmacology

authors： Ledgerwood CJ,Greenwood SM,Brett RR,Pratt JA,Bushell TJ

更新日期：2011-01-01 00:00:00

abstract：BACKGROUND AND PURPOSE:We sought to understand why (-)-cannabidiol (CBD) and (-)-cannabidiol-dimethylheptyl (CBD-DMH) exhibit distinct pharmacology, despite near identical structures. EXPERIMENTAL APPROACH:HEK293A cells expressing either human type 1 cannabinoid (CB1 ) receptors or CB2 receptors were treated with CBD ...

journal_title：British journal of pharmacology

authors： Tham M,Yilmaz O,Alaverdashvili M,Kelly MEM,Denovan-Wright EM,Laprairie RB

更新日期：2019-05-01 00:00:00

abstract：:1. The effects of formoterol, a beta 2-adrenoceptor agonist, on plasma protein exudation and microvascular permeability induced by topical, i.e. applied onto the tracheal mucosal surface, bradykinin (10 nmol; 20 microM, 5 min, 0.1 ml min-1) were studied in a perfused segment of trachea prepared in situ in anaesthetize...

journal_title：British journal of pharmacology

authors： O'Donnell SR,Anderson GP

更新日期：1995-09-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Methylene blue (MB) is commonly employed as a treatment for methaemoglobinaemia, malaria and vasoplegic shock. An increasing number of studies indicate that MB can cause 5-HT toxicity when administered with a 5-HT reuptake inhibitor. MB is a potent inhibitor of monoamine oxidases, but other targe...

journal_title：British journal of pharmacology

authors： Oz M,Isaev D,Lorke DE,Hasan M,Petroianu G,Shippenberg TS

更新日期：2012-05-01 00:00:00

abstract：:5-Hydroxytryptamine (5-HT) evoked potent contractile responses in phenoxybenzamine-treated ring segments of rat caudal artery, partially contracted with U46619. Responses were mimicked by 5-HT1-selective agonists with the potency order: RU24969 > 5-carboxamidotryptamine > 5-HT = CP-93,129 > sumatriptan. 8-Hydroxy-N,N-...

journal_title：British journal of pharmacology

authors： Craig DA,Martin GR

更新日期：1993-07-01 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

authors： O'Connor SC,Brain KL,Bennett MR

更新日期：1999-12-01 00:00:00

abstract：:(1) Increased oxidative stress plays a significant role in the etiology of cardiovascular disease. Lipid peroxidation, initiated in the presence of hydroxy radicals resulting in the production of malondialdehyde, directly produces oxidative stress. This study was designed to examine the direct impact of malondialdehyd...

journal_title：British journal of pharmacology

authors： Folden DV,Gupta A,Sharma AC,Li SY,Saari JT,Ren J

更新日期：2003-08-01 00:00:00

abstract：:1,2,3,4-Tetrahydro-9-aminoacridine (THA) has an inhibitory effect on the activity of acetylcholinesterase which has led to its use in the treatment of Alzheimer's disease. Other actions of THA include the inhibition of voltage-dependent ion channels. In this paper we describe the effect of THA on the depolarization-in...

journal_title：British journal of pharmacology

authors： de Belleroche J,Gardiner IM

更新日期：1988-08-01 00:00:00

abstract：:Lipocortin (annexin) 1 is a putative mediator of the inflammatory effects of glucocorticoids. By flow cytometric analysis (FACS) we have studied the effect of dexamethasone on the cellular localization of lipocortin 1. U-937 cells were incubated with or without 10 nM phorbol 12-myristate 13-acetate (PMA) to induce cel...

journal_title：British journal of pharmacology

authors： Solito E,Nuti S,Parente L

更新日期：1994-06-01 00:00:00

abstract：:1. Human big-endothelin-1 (big-ET-1) and endothelin-1 (ET-1) are equipotent as pressor agents and produce a significant change in mean arterial blood pressure (MAP) in anaesthetized guinea-pigs (2 nmol kg-1: peak delta MAP: 23 +/- 6 mmHg and 26 +/- 5 mmHg, respectively). 2. Unlike big-ET-1, big-endothelin-3 (big-ET-3)...

journal_title：British journal of pharmacology

authors： D'Orléans-Juste P,Télémaque S,Claing A

更新日期：1991-10-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Cytochrome P450 (CYP, P450) 3A4 is involved in the metabolism of 50% of drugs and its catalytic activity in vivo is not explained only by hepatic expression levels. We previously demonstrated that UDP-glucuronosyltransferase (UGT) 2B7 suppressed CYP3A4 activity through an interaction. In the pres...

journal_title：British journal of pharmacology

authors： Miyauchi Y,Tanaka Y,Nagata K,Yamazoe Y,Mackenzie PI,Yamada H,Ishii Y

更新日期：2020-03-01 00:00:00

abstract：:1. The cyclic analogue of dopamine, 2-amino-6,7-dihydroxy-1,2,3,4-tetrahydronaphthalene (ADTN) was injected into the lateral ventricle or bilaterally into the nucleus accumbens or caudate nucleus of conscious rats and its effect on locomotor activity was investigated. 2. When given intraventricularly, ADTN produced so...

journal_title：British journal of pharmacology

authors： Elkhawad AO,Woodruff GN

更新日期：1975-05-01 00:00:00

abstract：:1. The aim of the study was to compare the effects of 14 day subcutaneous infusion of the 5-HT(2C) receptor agonists, m-chlorophenylpiperazine (mCPP, 12 mg kg(-1) day(-1)) and Ro 60-0175 (36 mg kg(-1) day(-1)) and the 5-HT releasing agent and re-uptake inhibitor, d-fenfluramine (6 mg kg(-1) day(-1)), on food and water...

journal_title：British journal of pharmacology

authors： Vickers SP,Benwell KR,Porter RH,Bickerdike MJ,Kennett GA,Dourish CT

更新日期：2000-07-01 00:00:00

abstract：:1. The pathological features of Gram-positive shock can be mimicked by the co-administration of two cell wall components of Staphylococcus aureus, namely lipoteichoic acid (LTA) and peptidoglycan (PepG). This is associated with the expression of the inducible isoform of nitric oxide synthase (iNOS) in various organs. ...

journal_title：British journal of pharmacology

authors： Kengatharan KM,De Kimpe SJ,Thiemermann C

更新日期：1996-12-01 00:00:00

abstract：:1. In a rat model of experimental ileus, the effect of blockade of adrenergic and nitrergic neurotransmission was studied on the intestinal transit of Evans blue. 2. Ether anaesthesia and skin incision had no influence on the transit. Laparotomy significantly inhibited the transit of Evans blue. This inhibition was ev...

journal_title：British journal of pharmacology

authors： De Winter BY,Boeckxstaens GE,De Man JG,Moreels TG,Herman AG,Pelckmans PA

更新日期：1997-02-01 00:00:00

abstract：:1. In decerebrated, non-spinalized rabbits, intrathecal administration of either of the selective 5-HT1A-receptor antagonists (S)WAY-100135 or WAY-100635 resulted in dose-dependent enhancement of the reflex responses of gastrocnemius motoneurones evoked by electrical stimulation of all myelinated afferents of the sura...

journal_title：British journal of pharmacology

authors： Clarke RW,Harris J,Houghton AK

更新日期：1996-11-01 00:00:00

abstract：:1. The influence of different holding potentials (-120 to -70 mV) on the contraction of enzymatically dispersed myocytes from guinea-pig hearts was evaluated. Contractions were elicited by repetitive depolarizations to 0 mV at 0.5 Hz. 2. While ineffective at 140 and 5 mmol l-1 [Na+]o and pipette Na+, respectively, dep...

journal_title：British journal of pharmacology

authors： Mermi J,Yajima M,Ebner F

更新日期：1991-11-01 00:00:00

abstract：:1. Protection against 1-methyl-4-phenylpyridinium ion (MPP+) neurotoxicity by two nitric oxide-related compounds, N omega-nitro-L-arginine (L-NOARG) and L-arginine, was studied in the corpus striatum by means of two MPP+ perfusions separated by 24 h. Dopamine extracellular output after the second MPP+ (1, 5 and 10 mM)...

journal_title：British journal of pharmacology

authors： Santiago M,Machado A,Cano J

更新日期：1994-03-01 00:00:00

abstract：:1. The role played by endogenous lipocortin 1 in the anti-migratory action exerted by dexamethasone (Dex) on monocyte recruitment in an in vivo model of acute inflammation was investigated by use of several neutralizing polyclonal antibodies raised against lipocortin 1 or a lipocortin 1-derived N-terminus peptide (pep...

journal_title：British journal of pharmacology

authors： Getting SJ,Flower RJ,Perretti M

更新日期：1997-03-01 00:00:00

abstract：:1. An investigation into the effects of cholecystokinin octapeptide (CCK-8S) and its pentapeptide analogue, pentagastrin, on neurones located in ventromedial nuclei of rat hypothalamic slices maintained in vitro has been undertaken. 2. CCK-8S (0.01-1.0 microM) applied in the perfusion medium produced a concentration-d...

journal_title：British journal of pharmacology

authors： Boden P,Hill RG

更新日期：1988-05-01 00:00:00

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 pot...

journal_title：British journal of pharmacology

authors： Collins GG,Dewhurst DG

更新日期：1986-06-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Sphingosine-1-phosphate (S1P) has been shown to be involved in the asthmatic disease as well in preclinical mouse experimental models of this disease. The aim of this study was to understand the mechanism(s) underlying S1P effects on the lung. EXPERIMENTAL APPROACH:BALB/c, mast cell-deficient an...

journal_title：British journal of pharmacology

authors： Roviezzo F,Sorrentino R,Bertolino A,De Gruttola L,Terlizzi M,Pinto A,Napolitano M,Castello G,D'Agostino B,Ianaro A,Sorrentino R,Cirino G

更新日期：2015-04-01 00:00:00

abstract：LINKED ARTICLES:This article is part of a themed section on Nitric Oxide 20 Years from the 1998 Nobel Prize. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.2/issuetoc. ...

journal_title：British journal of pharmacology

authors： Ignarro LJ

更新日期：2019-01-01 00:00:00

abstract：:1. ATP, UTP, ADP and ADP-beta-S elicited Ca2+ -signals in cultured aortic smooth muscle cells although ADP, UDP and ADP-beta-S gave approximately 40% of the maximal response seen with ATP and UTP. Adenosine, AMP or alpha,beta-methylene-ATP had no effect. These responses were attributed to P2Y2/4 and P2Y1 receptors, wh...

journal_title：British journal of pharmacology

authors： Pediani JD,McGrath JC,Wilson SM

更新日期：1999-04-01 00:00:00

abstract：:1. Modulations of Cl- responses to glycine by 5-hydroxytryptamine ligands were studied in cultured spinal neurones, by the whole-cell recording technique. 2. Three 5-HT3 antagonists were found to potentiate reversibly responses to low concentrations of glycine. Potentiations were induced by micromolar concentrations o...

journal_title：British journal of pharmacology

authors： Chesnoy-Marchais D

更新日期：1996-08-01 00:00:00

abstract：:1. U937 cells are a continuous line of human cells of committed monocytic origin which serve as a useful model for studying human monocytic function. The present study investigated the effect of platelet-activating factor (Paf) on intracellular free calcium ion concentration ([Ca2+]i) in U937 cells using the calcium f...

journal_title：British journal of pharmacology

authors： Ward SG,Westwick J

更新日期：1988-04-01 00:00:00

abstract：:Δ9 -tetrahydrocannabinol, the principal active component in Cannabis sativa extracts such as marijuana, participates in cell signalling by binding to cannabinoid CB1 and CB2 receptors on the cell surface. The CB1 receptors are present in both inhibitory and excitatory presynaptic terminals and the CB2 receptors are fo...

journal_title：British journal of pharmacology

authors： Basavarajappa BS,Joshi V,Shivakumar M,Subbanna S

更新日期：2019-09-01 00:00:00