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  • Title: Determination of daily variations of brain 5-hydroxytryptamine and dopamine turnovers and of the clearance of their acidic metabolites in conscious rats by repeated sampling of cerebrospinal fluid.
    Author: Hutson PH, Sarna GS, Curzon G.
    Journal: J Neurochem; 1984 Jul; 43(1):291-3. PubMed ID: 6202845.
    Abstract:
    Central 5-hydroxytryptamine (5-HT) and dopamine (DA) turnovers were estimated simultaneously in conscious freely moving rats kept on a 12-h dark/12-h light cycle by sampling cisternal CSF of each animal before and after giving probenecid and determining the accumulation of the acidic metabolites of the two amines. The turnovers of both transmitters and the clearances of their acid metabolites from the brain were shown to be significantly greater during the dark (red light) period than during the white light period.
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