Abstract
Nocturnal plasma melatonin concentrations were reduced following administration of the alpha 1 adrenoceptor antagonist, prazosin (2 mg orally at 1900h), to 10 normal men. These data indicate that alpha 1 adrenoceptors are involved in the physiological control of melatonin secretion in man.
MeSH terms
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Administration, Oral
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Adult
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Circadian Rhythm / drug effects
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Humans
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Male
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Melatonin / blood*
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Pineal Gland / drug effects
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Pineal Gland / physiology*
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Prazosin / pharmacology
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Receptors, Adrenergic / drug effects
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Receptors, Adrenergic / physiology*
Substances
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Receptors, Adrenergic
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Melatonin
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Prazosin