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Tetrahydrobiopterin (BH4) deficiency is caused by mutations in genes encoding enzymes involved in the synthesis and regeneration of BH4. The condition is usually accompanied by hyperphenylalaninemia (HPA) and deficiency of...
BACKGROUND/OBJECTIVES: The aim of this study was to evaluate the biological and sleep-promoting effects of combined γ-aminobutyric acid (GABA) and 5-hydroxytryptophan (5-HTP) using caffeine-induced sleepless fruit flies, ICR mice, and...
To investigate the distribution, ultrastructure and synapsis of serotoninergic cells and CGRP nerve fibers in mammalian taste buds, immunohistochemistry and electronmicroscopy were applied to mice vallate papillae. In normal mice,...
In order to demonstrate autoradiographically the sites of serotonin metabolism in the brain, DL 5-HTP and DL 5-HTP-C14 were intraperitoneally administered to healthy adult mice. In order to distinguish histochemically...
This study was conducted to define the underlying mechanism of hypophagia induced by increased central serotonergic action. Rats received 3 daily injections of 5-hydroxy-L-tryptophan (5-HTP), a serotonin precursor, at a...