XB-ART-32829
Acta Physiol Acad Sci Hung
1975 Jan 01;461:33-6.
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Melatonin content of cat cerebrospinal fluid and blood following intravenous injection of melatonin as measured by Xenopus laevis skin melanophore test.
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Melatonin content of the cerebrospinal fluid (CSF), serum and choroid plexus was measured in untreated and melatonin-injected cats using the Xenopus laevis melanophore-contracting bioassay. CSF and choroid plexus had a considerable melanophore contracting activity in the untreated animals. Intravenously injected melatonin considerably enhanced the melanophore-contracting activity of the CSF and choroid plexus. Two hours later, melatonin was still present at high concentrations in these tissues, whereas it had considerably diminished in the blood. It is concluded that the choroid plexus concentrates and secretes melatonin into the CSF in a bioactive form.
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Species referenced: Xenopus laevis
Genes referenced: cat.2