Rapid reversal by naloxone of the chronic effects of morphine on rat liver and brain tryptophan metabolism.

abstract：:1. In order to investigate the vasodilator mechanisms of the K+ channel openers, cromakalim, pinacidil and nicorandil, we measured changes in cytoplasmic Ca2+ concentration [( Ca2+]i) simultaneously with force by a microfluorimetric method using fura-2, a calcium indicator, in canine coronary arterial smooth muscle ce...

journal_title：British journal of pharmacology

authors： Yanagisawa T,Teshigawara T,Taira N

更新日期：1990-09-01 00:00:00

abstract：:1 In order to address mechanistic differences between arterial vessel types, we have compared the vasorelaxant actions of anandamide in resistance (G3) and conduit (G0) mesenteric arteries. 2 Anandamide produced concentration-dependent relaxations of pre-constricted G3 arteries with a maximal response that was signifi...

journal_title：British journal of pharmacology

authors： O'Sullivan SE,Kendall DA,Randall MD

更新日期：2004-06-01 00:00:00

abstract：:1. 2-2' Pyridylisatogen tosylate (PIT) (greater than 2.5 muM) relaxed the guinea-pig isolated taenia caeci by an unknown mechanism. 2. With higher concentrations of PIT (greater than 12.5 muM) subsequent applications of adenosine 5'-triphosphate (ATP) (2-600 muM) revealed a blockade of the ATP receptors. The antagonis...

journal_title：British journal of pharmacology

authors： Spedding M,Sweetman AJ,Weetman DF

更新日期：1975-04-01 00:00:00

abstract：:Rats were placed on either a low sodium intake (low sodium diet 0.025% dry weight, tap water for drinking) or a high sodium intake (normal sodium diet 0.45% dry weight, 0.9% saline for drinking) for 10 days. The pressor-response curve to angiotensin II in rats previously on a high sodium intake was shifted to the left...

journal_title：British journal of pharmacology

authors： Jones DR,Penner SB,Smyth DD

更新日期：1985-12-01 00:00:00

abstract：:1. Neurotensin was infused intravenously, in the presence or absence of intravenous atropine or intraarterial tetrodotoxin, into dogs anaesthetized with sodium pentobarbitone. Net and unidirectional fluxes of sodium and blood flows in the ileum were measured. Arterial and mesenteric venous blood pressures, haematocrit...

journal_title：British journal of pharmacology

authors： Mailman D

更新日期：1988-05-01 00:00:00

abstract：:1. Endotoxin shock is accompanied by an increase in peripheral vascular permeability. It has been postulated that most biological activities of LPS are derived from lipid A moiety. Here we examined the effect of lipid A analogue ONO-4007 in increasing vascular permeability and the possible mediators in mouse skin by a...

journal_title：British journal of pharmacology

authors： Ishida H,Fujii E,Irie K,Yoshioka T,Muraki T,Ogawa R

更新日期：2000-07-01 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

authors： Gotta V,Cools F,van Ammel K,Gallacher DJ,Visser SA,Sannajust F,Morissette P,Danhof M,van der Graaf PH

更新日期：2015-09-01 00:00:00

abstract：:The effects of high (20 mM) concentrations of caffeine were studied on the transmembrane voltage and currents in rat single ventricular myocytes by the whole cell configuration of the patch clamp technique. Rapid application of caffeine released Ca2+ from the sarcoplasmic reticulum and induced a Ni(2+)-sensitive trans...

journal_title：British journal of pharmacology

authors： Varro A,Hester S,Papp JG

更新日期：1993-08-01 00:00:00

abstract：BACKGROUND AND PURPOSE:8-Nitroguanosine 3',5'-cyclic monophosphate (8-nitro-cGMP), formed nitric oxide (NO)-dependently, is a physiological second messenger, yet little is known about its role in the pathophysiology of vascular diseases. To study the pharmacological activity of 8-nitro-cGMP in diabetic mice, we compare...

journal_title：British journal of pharmacology

authors： Tokutomi Y,Kataoka K,Yamamoto E,Nakamura T,Fukuda M,Nako H,Toyama K,Dong YF,Ahmed KA,Sawa T,Akaike T,Kim-Mitsuyama S

更新日期：2011-04-01 00:00:00

abstract：:1. In the present work, we have studied the expression of Fos during acute and chronic administration of the kappa-opioid receptor agonist U-50488H and after U-5088H withdrawal in the rat hypothalamic paraventricular nucleus (PVN). Fos production was also studied in brainstem regions that innervate the PVN: the A(2) c...

journal_title：British journal of pharmacology

authors： Laorden ML,Castells MT,Milanés MV

更新日期：2003-04-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Uridine 5'-triphosphate (UTP) is a potent vasoconstrictor of cerebral arteries and induces Ca(2+) waves in vascular smooth muscle cells (VSMCs). This study aimed to determine the mechanisms underlying UTP-induced Ca(2+) waves in VSMCs of the rat basilar artery. EXPERIMENTAL APPROACH:Isometric fo...

journal_title：British journal of pharmacology

authors： Syyong HT,Yang HH,Trinh G,Cheung C,Kuo KH,van Breemen C

更新日期：2009-02-01 00:00:00

abstract：BACKGROUND AND PURPOSE:In the sensorimotor (SM) and medial prefrontal (mPF) basal ganglia (BG) circuits, the cortical information is transferred to the substantia nigra pars reticulata (SNr) through the hyperdirect trans-subthalamic pathway and through the direct and indirect trans-striatal pathways. The cannabinoid CB...

journal_title：British journal of pharmacology

authors： Antonazzo M,Gutierrez-Ceballos A,Bustinza I,Ugedo L,Morera-Herreras T

更新日期：2019-04-01 00:00:00

abstract：:1. The effects of the intravenous injection of Kö 1173, a new anticonvulsant drug, phenytoin and procainamide were studied on three types of cardiac arrhythmia in dogs.2. Ventricular ectopic beats produced by intravenous injection of adrenaline in anaesthetized dogs respired with halothane were abolished by Kö 1173, 0...

journal_title：British journal of pharmacology

authors： Allen JD,Ekue JM,Shanks RG,Zaidi SA

更新日期：1972-08-01 00:00:00

abstract：:1 alpha-Monofluoromethyldopa (MFMD, RMI 71963), a potent and selective enzyme-activated irreversible inhibitor of aromatic L-amino acid decarboxylase produces a substantial and long-lasting decrease in the catecholamine content of mouse brain, heart and kidney. 2 Single doses of MFMD reduce the 5-hydroxytryptamine con...

journal_title：British journal of pharmacology

authors： Bey P,Jung MJ,Koch-Weser J,Palfreyman MG,Sjoerdsma A,Wagner J,Zraïka M

更新日期：1980-12-01 00:00:00

abstract：:1 The actions of 5-methoxytryptamine (5-MeOT), N,N-dimethyltryptamine (DMT), 5-hydroxy-N,N-dimethyltryptamine (bufotenine, 5-HODMT) and 5-methoxy-N,N-dimethyltryptamine (5-MeODMT), and their interactions with 5-hydroxytryptamine (5-HT), acetylcholine, (-)-noradrenaline, and glutamate were studied by microiontophoresis...

journal_title：British journal of pharmacology

authors： Bradley PB,Briggs I

更新日期：1974-03-01 00:00:00

abstract：:RSD 921 is a novel, structurally unique, class I Na+ channel blocking drug under development as a local anaesthetic agent and possibly for the treatment of cardiac arrhythmias. The effects of RSD 921 on wild-type heart, skeletal muscle, neuronal and non-inactivating IFMQ3 mutant neuronal Na+ channels expressed in Xeno...

journal_title：British journal of pharmacology

authors： Pugsley MK,Goldin AL

更新日期：1999-05-01 00:00:00

abstract：:1. A pentobarbitone-anaesthetized canine model of myocardial conduction was developed to evaluate drug effects on intra-atrial (I-A), intra-ventricular (I-V) and atrioventricular (A-V) conduction parameters, both at rest and during electrical pacing of the right atrium or ventricle. Drug effects on the ability of the ...

journal_title：British journal of pharmacology

authors： Allely MC,Alps BJ

更新日期：1988-02-01 00:00:00

abstract：:1. The effect of prostaglandin E1 (PGE1) on the spontaneous phasic contraction of the rat isolated portal vein was studied. 2. The isolated portal vein exhibited spontaneous phasic contractions. Removal of Ca2+ from Krebs-Ringer solution or application of nifedipine abolished the spontaneous contraction, indicating th...

journal_title：British journal of pharmacology

authors： Miwa T,Endou M,Okumura F

更新日期：1997-04-01 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

authors： Lees GM,Percy WH

更新日期：1981-06-01 00:00:00

abstract：:1 Human luteal tissue slices from days 18, 21 and 25 of the menstrual cycle were superfused in vitro with Medium 199 alone or containing cloprostenol (1 microgram/ml). Concentrations of progesterone, oestradiol-17beta and prostaglandins F2alpha and E2 were determined in the superfusate samples. 2 Secretion of steroids...

journal_title：British journal of pharmacology

authors： McDougall AN,Walker FM,Watson J

更新日期：1977-07-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Gallium (Ga) has been shown to be effective in the treatment of disorders associated with accelerated bone loss, including cancer-related hypercalcemia and Paget's disease. These clinical applications suggest that Ga could reduce bone resorption. However, few studies have studied the effects of G...

journal_title：British journal of pharmacology

authors： Verron E,Masson M,Khoshniat S,Duplomb L,Wittrant Y,Baud'huin M,Badran Z,Bujoli B,Janvier P,Scimeca JC,Bouler JM,Guicheux J

更新日期：2010-04-01 00:00:00

abstract：:The molecular mechanisms involved in veratridine-induced chromaffin cell death have been explored. We have found that exposure to veratridine (30 microM, 1 h) produces a delayed cellular death that reaches 55% of the cells 24 h after veratridine exposure. This death has the features of apoptosis as DNA fragmentation c...

journal_title：British journal of pharmacology

authors： Jordán J,Galindo MF,Calvo S,González-García C,Ceña V

更新日期：2000-08-01 00:00:00

abstract：:1. This study tested the hypothesis that the systemic effects of burn include altered metabolic activity in the heart. Metabolic activity was studied by measuring alterations in cyclic nucleotide levels and protein concentrations in atrial and ventricular muscle in mice at 14 and 22 days after a 20% body surface area ...

journal_title：British journal of pharmacology

authors： Tomera JF,Martyn JA

更新日期：1990-10-01 00:00:00

abstract：:1 A study was made of desensitization in chronically denervated and in normally innervated mouse soleus muscles. 2 Very high concentrations of acetylcholine produced small contractions of the innervated muscles; these were reduced in size when the addition was repeated 1 min after wash-out. 3 Desensitization in innerv...

journal_title：British journal of pharmacology

authors： Hall MT,Maleque MA,Wadsworth RM

更新日期：1975-09-01 00:00:00

abstract：:1 The appearance of pancreatic muscarinic receptors during development has been measured by use of the specific ligand [3H]-quinuclidinyl benzilate ([3H]-QNB). 2 QNB binding sites are present in foetal pancreas; their maximal concentration is attained at the age of 30 days and a significant decrease is observed in one...

journal_title：British journal of pharmacology

authors： Dumont Y,Larose L,Morisset J,Poirier GG

更新日期：1981-06-01 00:00:00

abstract：:1. Effects of neuropeptides of the vasopressin family on Cl(-) secretion have not yet been reported in lung. Using the 16HBE14o- bronchial epithelial cell line, we investigated their action on Cl(-) secretion. 2. In symmetrical Cl(-) solutions, basolateral application of arginine vasotocin (AVT), oxytocin or isotocin ...

journal_title：British journal of pharmacology

authors： Bernard K,Bogliolo S,Ehrenfeld J

更新日期：2005-04-01 00:00:00

abstract：:1. 5-Hydroxytryptamine (5-HT) is known to produce a number of different effects in the gastrointestinal tract of various species, and has been proposed to play a key role in a number of intestinal disorders in man, including irritable bowel syndrome (IBS), although the receptors involved have yet to be established. Th...

journal_title：British journal of pharmacology

authors： Borman RA,Tilford NS,Harmer DW,Day N,Ellis ES,Sheldrick RL,Carey J,Coleman RA,Baxter GS

更新日期：2002-03-01 00:00:00

abstract：:1. We have characterized the human smooth muscle endothelin converting enzyme (ECE) present in the media of the endothelium-denuded human umbilical vein preparation. 2. Endothelin-1 (ET-1) and ET-2 were potent constrictors of umbilical vein with EC50 values of 9.2 nM and 29.6 nM, respectively. ET-1 was at least 30 tim...

journal_title：British journal of pharmacology

authors： Maguire JJ,Johnson CM,Mockridge JW,Davenport AP

更新日期：1997-12-01 00:00:00

abstract：:1 We have investigated the effects of platelet-activating factor (PAF), an endogenous mediator of inflammation, on ion transport and prostaglandin synthesis in the human isolated colon. 2 Application of PAF to the serosal surface of human colonic mucosa induced a marked, concentration-dependent increase in ion transpo...

journal_title：British journal of pharmacology

authors： Borman RA,Jewell R,Hillier K

更新日期：1998-01-01 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