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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1981-11-18
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pubmed:abstractText |
A comparison of the effects of noradrenaline and 6-fluoronoradrenaline has been made at several peripheral sympathetic neuroeffector junctions. In the rat vas deferens preparation in the presence of 1 microM cocaine, 6-fluoronoradrenaline was found to be about 9 times more potent than noradrenaline as an agonist at presynaptic inhibitory alpha 2- adrenoceptors. In the rabbit aorta, 6-fluoronoradrenaline had approximately one tenth of the potency of noradrenaline in stimulating the postsynaptic alpha 1-adrenoceptors. Furthermore 6-fluoronoradrenaline, in contrast to previous reports, appears to be a substrate for the neuronal uptake process since exposure to cocaine potentiated the inhibition of the twitch response of the vas deferens by 6-fluoronoradrenaline. In addition, 6-fluoronoradrenaline increased the spontaneous outflow of radioactivity from rabbit pulmonary artery strips prelabelled with 3H-noradrenaline and this increase was blocked by cocaine (30 microM). These results demonstrate that 6-fluoronoradrenaline is a preferential alpha 2-adrenoceptor agonist which is a substrate for the neuronal uptake process in peripheral sympathetically innervated smooth muscle preparations.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0028-1298
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
317
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1-4
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6269000-Animals,
pubmed-meshheading:6269000-Aorta, Thoracic,
pubmed-meshheading:6269000-Male,
pubmed-meshheading:6269000-Muscle, Smooth, Vascular,
pubmed-meshheading:6269000-Muscle Contraction,
pubmed-meshheading:6269000-Neuroeffector Junction,
pubmed-meshheading:6269000-Norepinephrine,
pubmed-meshheading:6269000-Pulmonary Artery,
pubmed-meshheading:6269000-Rats,
pubmed-meshheading:6269000-Rats, Inbred Strains,
pubmed-meshheading:6269000-Receptors, Adrenergic, alpha,
pubmed-meshheading:6269000-Sympathetic Nervous System,
pubmed-meshheading:6269000-Vas Deferens
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pubmed:year |
1981
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pubmed:articleTitle |
In vitro studies on 6-fluoronoradrenaline at several peripheral sympathetic neuroeffector junctions.
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pubmed:publicationType |
Journal Article,
In Vitro
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