Summary
Rates of 5-hydroxytryptamine (5-HT) turnover in the mediobasal hypothalamus of male rats were estimated using pharmacological methods during the daytime and at night. Concentrations of 5-HT in this hypothalamic area were higher nocturnally than diurnally; this was apparently due to increased 5-HT synthesis and decreased 5-HT catabolism at night.
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Supported by NIH grant RR07187 (TSK) and NIH grant HD10202 (Neuroendocrine Core).
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King, T.S., Steinlechner, S. & Steger, R.W. Comparison of diurnal and nocturnal rates of 5-hydroxytryptamine turnover in the rat mediobasal hypothalamus. Experientia 41, 417–419 (1985). https://doi.org/10.1007/BF02004536
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DOI: https://doi.org/10.1007/BF02004536