Abstract:
:1 Vasodilator responses to histamine, bradykinin and sympathetic nerve stimulation were elicited in the perfused paw of dogs treated with bretylium (15-20 mg/kg) and atropine. The H2-receptor blocking agent, burimamide, when administered in the dose of 5 mg/kg intravenously and 4 mg intra-arterially did not depress significantly these vasodilator responses. The subsequent administration of tripelennamine in the dose of 2.5-5 mg/kg intravenously and 4 mg intra-arterially produced a significant blockade of the response to histamine and reduced the sustained vasodilator response to nerve stimulation. 2 In guanethidine-treated dogs, tripelennamine administered in the same dose following burimamide produced a blockade of the response to histamine comparable to that in the bretylium experiments, but decreased only the sustained vasodilator response to stimulation at 1 Hz. When the order of administration of the antihistamines was reversed in another group of guanethidine-treated dogs, tripelennamine had only a slight blocking effect on the response to histamine and did not affect the responses to nerve stimulation. Burimamide exerted a significant blocking effect on the response to histamine, but not to nerve stimulation. Another H2-receptor blocking agent, metiamide, when given after tripelennamine, also had a marked blocking effect on the response to histamine and almost abolished the vasodilator response to 4-methylhistamine, an H2-agonist. Nevertheless, even in the presence of this profound histamine blockade, the sustained vasodilator response to nerve stimulation remained unchanged. 3 In another group of experiments vasoconstrictor responses to exogenous noradrenaline and sympathetic stimulation were initially depressed by burimamide and later returned to control values. Tripelennamine increased these responses by its uptake blocking action. 4 It is concluded that the sustained vasodilator response is not antagonized by a specific antihistaminic action. The decrease in the sustained vasodilator response produced by antihistamines is produced attributable to potentiation of a residual adrenergic vasoconstricotr effect not completely blocked by bretylium.
journal_name
Br J Pharmacoljournal_title
British journal of pharmacologyauthors
Kraft E,Zimmerman BGdoi
10.1111/j.1476-5381.1975.tb07329.xsubject
Has Abstractpub_date
1975-01-01 00:00:00pages
51-8issue
1eissn
0007-1188issn
1476-5381journal_volume
53pub_type
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journal_title:British journal of pharmacology
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doi:10.1111/j.1476-5381.1978.tb08471.x
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abstract::1 Uniaxial cyclic stretch leads to an upregulation of cyclooxygenase (COX)-2 through increases in the intracellular Ca(2+) concentration via the stretch-activated (SA) channel and following nuclear factor kappa B (NF-kappaB) activation in human fibroblasts. However, the signaling mechanism as to how the elevated Ca(2+...
journal_title:British journal of pharmacology
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doi:10.1038/sj.bjp.0706182
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journal_title:British journal of pharmacology
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journal_title:British journal of pharmacology
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abstract::The diterpene, forskolin, is shown to produce a concentration-dependent, increase in short circuit current in two epithelial preparations, amphibian skin and rat colon. In the amphibian tissue the increase is sensitive to amiloride and due to an increase in electrogenic transepithelial sodium transport towards the ser...
journal_title:British journal of pharmacology
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doi:10.1111/j.1476-5381.1982.tb09187.x
更新日期:1982-05-01 00:00:00
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abstract::1. The present work describes the effects of inhibitors (amiloride and ethylisopropylamiloride) and activators (quinoxaline and phenylephrine) of the Na(+)-H+ exchanger on the outflow of dopamine in rat kidney slices loaded with L-dihydroxyphenylalanine (L-DOPA). 2. Incubation of kidney slices loaded with 50 microM L-...
journal_title:British journal of pharmacology
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doi:10.1111/j.1476-5381.1993.tb13608.x
更新日期:1993-06-01 00:00:00
abstract::1. First developed as an antiallergic drug, tranilast inhibits chemical mediator release from mast cells. In the present study, we examine the effects of tranilast on angiogenesis in vitro and in vivo and discuss the application of tranilast for angiogenic diseases. 2. Tranilast inhibited significantly the proliferati...
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doi:10.1038/sj.bjp.0701493
更新日期:1997-11-01 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...
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abstract::Cannabinoid (CB1) receptor activation acts neuronally, reducing GI motility, diarrhoea, pain, transient lower oesophageal sphincter relaxations (TLESRs) and emesis, and promoting eating. CB2 receptor activation acts mostly via immune cells to reduce inflammation. What are the key questions which now need answering to ...
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更新日期:1991-11-01 00:00:00
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更新日期:2004-03-01 00:00:00
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journal_title:British journal of pharmacology
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doi:10.1111/j.1476-5381.1993.tb13892.x
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更新日期:1993-03-01 00:00:00
abstract::1. Characterization of the beta-adrenoceptors mediating inhibition of gastric acid secretion in the conscious Heidenhain pouch dog has been investigated by determination of the effects of propranolol, (+)-propranolol, practolol and H35/25 on salbutamol and isoprenaline-induced inhibition of gastric acid secretion. 2. ...
journal_title:British journal of pharmacology
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doi:10.1111/j.1476-5381.1978.tb08652.x
更新日期:1978-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:In the setting of nitrate tolerance, endothelium-dependent relaxation is reduced in several types of peripheral vessels. However, it is unknown whether chronic in vivo administration of nitroglycerine modulates such relaxation in cerebral arteries. EXPERIMENTAL APPROACH:Isometric force and smoot...
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更新日期:2008-01-01 00:00:00
abstract::The ability of beta-adrenoceptor agonists to reduce the fusion of incomplete tetanic contractions of the soleus muscle of the cat has been used previously as a model to assess the potential tremor producing effect of sympathomimetic bronchodilators. The ability of (-)-isoprenaline, (-)-adrenaline, (+/-)-soterenol and ...
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doi:10.1111/j.1476-5381.1972.tb07297.x
更新日期:1972-03-01 00:00:00
abstract:BACKGROUND AND PURPOSE:While arachidonyl ethanolamine (anandamide) produces pharmacological effects mediated by cannabinoid CB1 receptors, it is also an agonist at the transient receptor potential vanilloid type 1 (TRPV1) ion channel. This study examined the cellular actions of anandamide in the midbrain periaqueductal...
journal_title:British journal of pharmacology
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更新日期:2011-07-01 00:00:00
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doi:10.1111/bph.12483
更新日期:2014-02-01 00:00:00
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更新日期:2009-08-01 00:00:00
abstract::1. A wide panel of compounds acting on beta-adrenoceptors active either in mammalian heart or in rodent digestive tract and adipose tissues, were investigated for their effects on Chinese hamster ovary cells transfected with the human or murine beta 3-adrenoceptor gene. 2. The beta 3-agonists, bucindolol, CGP 12177A a...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1994.tb13167.x
更新日期:1994-07-01 00:00:00
abstract::The present study examined the ability of the selective imidazoline I(2)-site ligands 2-(-2-benzofuranyl)-2-imidazoline (2-BFI) and 2-[4,5-dihydroimidaz-2-yl]-quinoline (BU224) and selected monoamine oxidase (MAO) inhibitors to evoke locomotor activity in rats bearing a lesion of the nigrostriatal pathway. Male Spragu...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0706019
更新日期:2004-12-01 00:00:00
abstract::1. The GABA-B receptor agonists baclofen and 3-aminopropylphosphinic acid (3-APPi) have antitussive activity in the cat and guinea pig. The purpose of this study was to investigate the sites of action of these GABA-B receptor agonists to inhibit the cough reflex. 2. Single intracerebroventricular (i.c.v.) cannulas wer...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1994.tb17145.x
更新日期:1994-12-01 00:00:00
abstract::1. The effects of various inhibitors of the mitochondrial electron transport chain on the activity of ATP-sensitive K+ channels were examined in the Cambridge rat insulinoma G1 (CRI-G1) cell line using a combination of whole cell and single channel recording techniques. 2. Whole cell current clamp recordings, with 5 m...
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pub_type: 杂志文章
doi:10.1038/sj.bjp.0702267
更新日期:1999-01-01 00:00:00