Abstract：
:The decrease in mesenteric blood flow produced by dopamine administered intra-arterially in the anaesthetised dog was investigated by means of drugs selective for alpha 1- and alpha 2-adrenoceptors. The selective alpha 1-adrenoceptor agonist phenylephrine (0.3-100 microgram) given by intra-arterial injection (i.a.) into the superior mesenteric artery of the anaesthetized dog produced a decrease in mesenteric blood flow which was preferentially blocked by the alpha 1-adrenoceptor antagonist prazosin (30-300 microgram/kg i.v.). On the other hand, i.a. injections of the selective alpha 2-adrenoceptor agonist M7 (1-100 microgram) or of dopamine (1-300 microgram) produced a decrease in mesenteric blood flow which was blocked by the alpha 2-adrenoceptor antagonist yohimbine (100-300 microgram/kg i.v.) but was not significantly reduced by prazosin (300 microgram/kg i.v.). These results demonstrate that the mesenteric vascular bed of the dog contains both alpha 1- and alpha 2-adrenoceptors located postsynaptically and mediating vasoconstriction. The decrease in mesenteric blood flow produced by i.a. injections of dopamine is mediated predominantly via postsynaptic alpha 2-adrenoceptors.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Shepperson NB,Duval N,Langer SZdoi
10.1016/0014-2999(82)90352-1subject
Has Abstractpub_date
1982-07-30 00:00:00pages
627-35issue
4eissn
0014-2999issn
1879-0712pii
0014-2999(82)90352-1journal_volume
81pub_type
杂志文章abstract：:We investigated the effects of [D-Ala2,D-Leu5]enkephalin (DADLE). [D-Ala2,MePhe4,Gly-ol5]enkephalin (DAGO), [D-Pen2,D-Pen5]enkephalin (DPDPE) (0.01-1 microM) and bremazocine (0.001-0.3 microM) on the electrically evoked release of radiolabelled neurotransmitters and on the dopamine (DA)-stimulated cyclic AMP efflux fr...
journal_title：European journal of pharmacology
pub_type： 杂志文章
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abstract：:The effect of the anti-allergic drug azelastine, 4-(p-chlorobenzyl)-2-(hexahydro-1-methyl-1H-azepine-4-yl)-1-(2H)-phth alazione), on airway hyperresponsiveness induced by immunologically stimulated pulmonary alveolar macrophages was investigated in canine bronchial segments under isometric conditions in vitro. Macroph...
journal_title：European journal of pharmacology
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doi：10.1016/0014-2999(95)00114-z
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2016.04.041
更新日期：2016-07-05 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(95)00281-o
更新日期：1995-09-05 00:00:00
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journal_title：European journal of pharmacology
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更新日期：1975-11-01 00:00:00
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journal_title：European journal of pharmacology
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更新日期：2000-10-06 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(76)90122-9
更新日期：1976-09-01 00:00:00
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)90520-g
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(92)90579-s
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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abstract：:Local anesthetics bind to dopamine transporters and inhibit dopamine uptake in rodent brain. Additionally, local anesthetics are self-administered in rhesus monkeys. The present study determined binding affinities of cocaine and five local anesthetics at dopamine transporters in rhesus monkey brain, and compared bindi...
journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)02620-1
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2005.09.001
更新日期：2005-11-21 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.07.052
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90285-x
更新日期：1991-09-24 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(95)00252-g
更新日期：1995-07-04 00:00:00
abstract：:BAY 41-2272 is a heme-dependent nitric oxide-independent soluble guanylate cyclase (sGC) stimulator, but its relaxant effect in vascular, respiratory and urogenital tissue is only partially dependent on sGC activation. As its mechanism of action has not been studied in the gastrointestinal tract, it was investigated i...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.04.049
更新日期：2012-07-05 00:00:00
