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PubMed · 4373116

Plasma tryptophan and sheep.

C N Chen·R S Kalucy·M K Hartmann·J H Lacey·A H Crisp·J E Bailey·E G Eccleston·A Coppen
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Abstract

Free, bound, and total plasma tryptophan (F.P.T., B.P.T., and T.P.T.) levels have been measured throughout the night in six young female volunteers. All-night polygraphic sleep recordings were also made. No direct temporal relationship was found between plasma tryptophan levels and specific sleep stages. The mean F.P.T. levels, however, were found to have a positive correlation with rapid-eye-movement (R.E.M.) sleep and a negative correlation with non-R.E.M. sleep. An inverse relationship existed between the F.P.T. and B.P.T. levels. There appeared to be a diurnal variation in F.P.T. levels, with high readings in the first half of the night.

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Adrenal Cortex HormonesCircadian RhythmDietElectroencephalographyFemaleHumansProtein BindingSleepSleep StagesSleep, REMTime FactorsTryptophanJournal Article

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BibTeXRIS

C N Chen, R S Kalucy, M K Hartmann, J H Lacey, A H Crisp, J E Bailey, E G Eccleston, A Coppen. 1974-12-07. Plasma tryptophan and sheep.. https://doi.org/10.1136/bmj.4.5944.564

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