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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1992-9-9
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pubmed:abstractText |
Adrenergic regulatory mechanisms of melatonin synthesis and secretion were studied in the pigeon in vivo. Late-afternoon intraperitoneal injection of noradrenaline (NA; 1 mg/kg) resulted in a significant decrease in plasma melatonin levels in 3 h. The same effect was seen after phenylephrine treatment (1 mg/kg i.p.), indicating that an alpha 1-adrenergic mechanism may mediate the inhibition. Propranolol treatment had no effect on plasma melatonin levels, supporting this concept. Detomidine (1 mg/kg i.p.), an alpha 2-adrenergic agonist, increased melatonin levels. This stimulatory effect was blocked by yohimbine, an alpha 2-adrenergic antagonist. However, yohimbine alone had no effect on the plasma melatonin levels, suggesting that alpha 2-adrenergic transmission is not primarily responsible for the nocturnal stimulation of melatonin synthesis and secretion in the pigeon.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Imidazoles,
http://linkedlifedata.com/resource/pubmed/chemical/Melatonin,
http://linkedlifedata.com/resource/pubmed/chemical/Norepinephrine,
http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Adrenergic, alpha,
http://linkedlifedata.com/resource/pubmed/chemical/Sympathomimetics,
http://linkedlifedata.com/resource/pubmed/chemical/detomidine
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pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0022-3042
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
59
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
915-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1322974-Animals,
pubmed-meshheading:1322974-Circadian Rhythm,
pubmed-meshheading:1322974-Columbidae,
pubmed-meshheading:1322974-Imidazoles,
pubmed-meshheading:1322974-Melatonin,
pubmed-meshheading:1322974-Norepinephrine,
pubmed-meshheading:1322974-Receptors, Adrenergic, alpha,
pubmed-meshheading:1322974-Sympathomimetics,
pubmed-meshheading:1322974-Time Factors
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pubmed:year |
1992
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pubmed:articleTitle |
Noradrenergic inhibition and alpha 2-adrenergic stimulation of melatonin secretion in the pigeon.
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pubmed:affiliation |
Department of Physiology, University of Oulu, Finland.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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