Bioscience, Biotechnology, and Biochemistry
Online ISSN : 1347-6947
Print ISSN : 0916-8451
Food & Nutrition Notes
Theanine-induced Reduction of Brain Serotonin Concentration in Rats
Hidehiko YOKOGOSHIMikiko MOCHIZUKIKotomi SAITOH
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1998 年 62 巻 4 号 p. 816-817

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  Following the administration of theanine, the brain tryptophan content significantly increased or tended to increase, but the contents of serotonin and 5-hydroxyindole acetic acid (5HIAA) decreased. The use of inhibitors of serotonin metabolism enable us to speculate that theanine reduced serotonin synthesis and also increased serotonin degradation in the brain.

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© 1998 by Japan Society for Bioscience, Biotechnology, and Agrochemistry
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