The effect of inhibitors of nitric oxide biosynthesis and cyclic GMP formation on nerve-evoked relaxation of human cavernosal smooth muscle.

abstract：:1. The relationship between the capacity of the chick biventer preparation, both intact tissue and homogenate, to inactivate acetylcholine and the ability of eserine to increase the sensitivity of the tissue to acetylcholine have been investigated.2. At concentrations of eserine of 2.69 x 10(-9)M and 2.69 x 10(-8)M th...

journal_title：British journal of pharmacology

authors： Baldwin DW,Lesser E

更新日期：1971-07-01 00:00:00

abstract：:1 ATP is an important vasoactive mediator, which acts via two receptor classes: P2X and P2Y. Activation of P2X receptors has traditionally been associated with the well-characterised vasoconstrictor properties of ATP. 2 In the current study, we have shown that the P2X(1 & 3) receptor ligand, alpha, beta methylene ATP,...

journal_title：British journal of pharmacology

authors： Harrington LS,Mitchell JA

更新日期：2004-11-01 00:00:00

abstract：:1. The responses of rat isolated aortae to vasoconstrictor and vasodilator agents have been studied in 14-day streptozotocin-diabetic rats. The effects of treatment with the aldose reductase inhibitor, ponalrestat, on these responses have also been investigated. 2. Maximum contractile responses and aortic sensitivity ...

journal_title：British journal of pharmacology

authors： Otter DJ,Chess-Williams R

更新日期：1994-10-01 00:00:00

abstract：:1. The effects of low oxygen tension on tone and on the responsiveness to contractile and relaxant agents were examined on circumflex coronary artery rings isolated from sheep. 2. When artery rings (2-2.5 mm o.d.) were set at their optimal resting tension, introduction of hypoxia (0% O2) caused a sustained contraction...

journal_title：British journal of pharmacology

authors： Kwan YW,Wadsworth RM,Kane KA

更新日期：1989-04-01 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：:[3H]-guanfacine (N-amidino-2-(2,6-dichloro 3[3H] phenyl) acetamide hydrochloride; 24.2 Ci/mmol) has been used as a radioligand in homogenates of rat cerebral cortex. Specific binding of [3H]-guanfacine was linear with respect to tissue concentration (2.5-15 mg/ml), saturable and not markedly affected in the pH range 6...

journal_title：British journal of pharmacology

authors： Jarrott B,Louis WJ,Summers RJ

更新日期：1982-02-01 00:00:00

abstract：:1. Prostaglandin F2 alpha (PGF2 alpha) and its synthetic analogue, fluprostenol, potently relaxed the precontracted isolated jugular vein of the rabbit (RJuV). The vasorelaxant activity of PGF2 alpha and fluprostenol was dependent upon an intact vascular endothelium. Although removal of the vascular endothelium abolis...

journal_title：British journal of pharmacology

authors： Chen J,Champa-Rodriguez ML,Woodward DF

更新日期：1995-12-01 00:00:00

abstract：:1. We have studied the mechanical response of circular strips of the guinea-pig ileum to tachykinins and characterized the receptors involved by means of receptor-selective agonists. 2. The strips responded to both substance P (SP) and neurokinin A (NKA), as well as to [Pro9]-SP sulphone (selective NK1-receptor agonis...

journal_title：British journal of pharmacology

authors： Maggi CA,Patacchini R,Giachetti A,Meli A

更新日期：1990-12-01 00:00:00

abstract：BACKGROUND AND PURPOSE:P2X(7), receptors are potently inhibited by extracellular acidification. The underlying molecular basis remains unknown. This study aimed to examine the role of extracellular histidine, lysine, aspartic acid and glutamic acid residues in the functional inhibition of rat P2X(7) receptors by acidic...

journal_title：British journal of pharmacology

authors： Liu X,Ma W,Surprenant A,Jiang LH

更新日期：2009-01-01 00:00:00

abstract：:1. The present study was aimed to determine whether propranolol improves contractile function of the ischaemic/reperfused heart through protection of the mitochondrial function during ischaemia. 2. Isolated perfused rat hearts were subjected to 35-min ischaemia followed by 60-min reperfusion. Pre-treatment with propra...

journal_title：British journal of pharmacology

authors： Iwai T,Tanonaka K,Kasahara S,Inoue R,Takeo S

更新日期：2002-06-01 00:00:00

abstract：:(1) 5-HT moduline (5-HTm) is tetrapeptide (Leu-Ser-Ala-Leu) previously shown to act as a specific endogenous antagonist to central 5-HT(1B/1D) receptors. Its effects were investigated in rat and rabbit pulmonary arteries (PAs). (2) In rabbit PAs, contractile responses to the 5-HT(1B/1D) receptor agonist 5-carboxamidot...

journal_title：British journal of pharmacology

authors： Murdoch R,Morecroft I,MacLean MR

更新日期：2003-03-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Injury to the lung parenchyma is a constitutional feature shared by many lung diseases. The protein, phosphatase and tensin homologue deleted on chromosome Ten (PTEN) is a major suppressor of phosphoinositide-3 kinase/Akt signalling, a vital survival pathway in lung parenchymal cells. Based on th...

journal_title：British journal of pharmacology

authors： Lai JP,Bao S,Davis IC,Knoell DL

更新日期：2009-01-01 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：BACKGROUND AND PURPOSE:ARL 67156, 6-N,N-Diethyl-D-beta-gamma-dibromomethylene adenosine triphosphate, originally named FPL 67156, is the only commercially available inhibitor of ecto-ATPases. Since the first report on this molecule, various ectonucleotidases responsible for the hydrolysis of ATP at the cell surface hav...

journal_title：British journal of pharmacology

authors： Lévesque SA,Lavoie EG,Lecka J,Bigonnesse F,Sévigny J

更新日期：2007-09-01 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

authors： Hobbiger F,Mitchelson F,Rand MJ

更新日期：1969-05-01 00:00:00

abstract：:Since protease-activated receptors (PARs) are distributed throughout the gastrointestinal tract, we investigated the role of PARs in modulation of the motility of the rat oesophageal muscularis mucosae. Thrombin produced contraction of segments of the upper and lower part of the smooth muscle. Trypsin contracted both ...

journal_title：British journal of pharmacology

authors： Kawabata A,Kuroda R,Kuroki N,Nishikawa H,Kawai K

更新日期：2000-10-01 00:00:00

abstract：:This study was performed to characterize the receptor subtypes involved in the endothelin stimulation of phospholipase D (PLD) in rat cortical astrocytes in primary culture. PLD activity was determined by measuring the formation of [32P]phosphatidylbutanol in [32P]orthophosphate prelabelled cells stimulated in the pre...

journal_title：British journal of pharmacology

authors： Servitja JM,Masgrau R,Sarri E,Picatoste F

更新日期：1998-08-01 00:00:00

abstract：:1. The ratio of the content of vasopressin to that of oxytocin (V/O ratio) was estimated in the supraoptic nucleus (SON), paraventricular nucleus (PVN) and posterior pituitary gland (PIT) of guinea-pigs.2. Extracts were assayed for antidiuretic activity to estimate vasopressin and for milk-ejecting activity to estimat...

journal_title：British journal of pharmacology

authors： Bisset GW,Errington ML,Richards CD

更新日期：1973-06-01 00:00:00

abstract：:1. The effects of the nonpeptide angiotensin II receptor (AT) antagonists losartan and PD 123319 on actions of angiotensin II in the rat caudal artery and rat vas deferens preparations were investigated. 2. Angiotensin II (1.0 microM) increased perfusion pressure in isolated segments of the rat caudal artery. This inc...

journal_title：British journal of pharmacology

authors： Cox SL,Ben A,Story DF,Ziogas J

更新日期：1995-03-01 00:00:00

abstract：:1 Ca(2+)-activated Cl(-) currents (I(Cl(Ca))) evoked by K(+)-free pipette solutions containing 500 nM Ca(2+) were recorded in rabbit pulmonary artery smooth muscle cells. A voltage step protocol in which the cells were stepped to +70 mV and then to -80 mV produced outward and inward Cl(-) currents respectively that ex...

journal_title：British journal of pharmacology

authors： Piper AS,Greenwood IA

更新日期：2003-01-01 00:00:00

abstract：:The antioestrogen, tamoxifen, blocks volume-regulated chloride channels and reduces transparency in bovine lenses maintained in vitro. In contrast to tamoxifen, the steroidal antioestrogen, ICI 182780, did not block volume-regulated chloride currents in three cultured cell lines and required 10 fold higher concentrati...

journal_title：British journal of pharmacology

authors： Zhang JJ,Jacob TJ,Hardy SP,Higgins CF,Valverde MA

更新日期：1995-08-01 00:00:00

abstract：:We have performed a systematic mutagenesis of three hydrophobic rings (17', 13' and 9') within transmembrane region (TM) 2 of the alpha9alpha10 nicotinic cholinergic receptor (nAChR) to a hydrophilic (threonine) residue and compared the properties of mutant receptors reconstituted in Xenopus laevis oocytes. Phenotypic...

journal_title：British journal of pharmacology

authors： Plazas PV,De Rosa MJ,Gomez-Casati ME,Verbitsky M,Weisstaub N,Katz E,Bouzat C,Elgoyhen AB

更新日期：2005-08-01 00:00:00

abstract：:1 Poly (ADP-ribose) synthetase (PARS) is a nuclear enzyme activated by strand breaks in DNA, which are caused by reactive oxygen species (ROS). Here we investigate the effects of the PARS inhibitors 3-aminobenzamide (3-AB), nicotinamide and 1,5-dihydroxyisoquinoline (ISO) on the circulatory failure and the organ injur...

journal_title：British journal of pharmacology

authors： McDonald MC,Filipe HM,Thiemermann C

更新日期：1999-11-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Peroxisome proliferator-activated receptors (PPARs) are ligand-activated transcription factors, and three subtypes (α, β and γ) have been identified. PPAR activation has been reported to decrease renal injury and markers of glomerular dysfunction in models of renal ischemia/reperfusion (I/R). How...

journal_title：British journal of pharmacology

authors： Miglio G,Rosa AC,Rattazzi L,Grange C,Collino M,Camussi G,Fantozzi R

更新日期：2011-01-01 00:00:00

abstract：BACKGROUND AND PURPOSE:Intrathecal administration of alpha(2)-adrenoceptor agonists produces potent analgesia. This study addressed the subtype of spinal alpha(2)-adrenoceptor responsible for the analgesic effects of i.t. dexmedetomidine and ST-91 in the formalin behavioural model and their effects on primary afferent ...

journal_title：British journal of pharmacology

authors： Nazarian A,Christianson CA,Hua XY,Yaksh TL

更新日期：2008-12-01 00:00:00

abstract：:1. The aim of the present study was to examine whether ramipril induces delayed myocardial protection against free radical injuries ex vivo and to determine the possible role of the bradykinin B2-nitric oxide (NO) pathway, prostaglandins(PGs) and protein synthesis in this delayed adaptive response. 2. Rats were pretre...

journal_title：British journal of pharmacology

authors： Jin ZQ,Chen X

更新日期：1998-10-01 00:00:00

abstract：:1. Intrasplenic injection of bradykinin (BK) induced a dose-dependent pressor response in the anaesthetized cat, with an ED50 of 0.98 +/- 0.43 nmol. In contrast, intrasplenic administration of desArg9bradykinin (desArg9BK) was without significant effect at doses of up to 200 nmol. 2. Intravenously administered BK indu...

journal_title：British journal of pharmacology

authors： Louttit JB,Coleman RA

更新日期：1993-12-01 00:00:00

abstract：:1. Inducible NO synthase (iNOS) expression and activity were measured in the mouse macrophage cell line J774 after exposure to bacterial lipopolysaccharide (LPS) with or without interferon-gamma (IFN-gamma). 2. Inhibition of NOS activity by concomitant N(G)-monomethyl-L-arginine (L-NMMA) treatment further increased iN...

journal_title：British journal of pharmacology

authors： Llovera M,Pearson JD,Moreno C,Riveros-Moreno V

更新日期：2001-01-01 00:00:00

abstract：:1. Tachycardia and bronchodilatation were produced by intravenous dimethylphenylpiperazinium iodide (DMPP) in the spinal or pithed cat. Responses other than those involving beta-adrenoceptors were minimized by appropriate blocking agents.2. With intact adrenals, both the tachycardia and bronchodilatation with 10 mug/k...

journal_title：British journal of pharmacology

authors： Parkes MW

更新日期：1973-08-01 00:00:00

abstract：:1. The current study investigated the effects of respiratory tract viral infection on the density of ETA and ETB receptors in murine tracheal smooth muscle and on the contractile response to endothelin-1 mediated by these receptors. 2. Quantitative autoradiographic studies using [125I]-endothelin-1 revealed that trach...

journal_title：British journal of pharmacology

authors： Henry PJ,Goldie RG

更新日期：1994-08-01 00:00:00