title: Tryptophan-deficient diet increases the neurochemical and behavioral response to amphetamine.
abstract: The present study examined the effects of a tryptophan-deficient diet on behavioral and neurochemical response to amphetamine. A tryptophan-deficient diet (14 days) decreased striatal serotonin and 5-hydroxyindolacetic acid content in rats. Under the latter conditions, amphetamine increased dopamine efflux in striatum and nucleus accumbens and produced a greater increase in motor activity when compared to controls. These results indicate how response to psychostimulants might be altered in the presence of a tryptophan-deficient diet.
authors.affiliation: Department of Sciences Applied for Biosystems, Section of Physiology and Human Nutrition, University of Cagliari, Via Porcell 4, I-09124 Cagliari, Italy.
authors.forename: Manolo
authors.initials: M
authors.lastname: Carta
authors.forename: Fabio
authors.initials: F
authors.lastname: Fadda
authors.forename: Roberto
authors.initials: R
authors.lastname: Stancampiano
mesh_terms: D000661:Amphetamine / Q000494:pharmacology*; D019969:Amphetamine-Related Disorders / Q000378:metabolism / Q000503:physiopathology; D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000378:metabolism* / Q000503:physiopathology; D001923:Brain Chemistry / Q000187:drug effects / Q000502:physiology; D003342:Corpus Striatum / Q000187:drug effects / Q000378:metabolism / Q000503:physiopathology; D004195:Disease Models, Animal; D004298:Dopamine / Q000378:metabolism*; D015259:Dopamine Agents / Q000494:pharmacology; D045604:Extracellular Fluid / Q000187:drug effects / Q000378:metabolism; D005526:Food, Formulated / Q000009:adverse effects; D006897:Hydroxyindoleacetic Acid / Q000378:metabolism; D008297:Male; D017551:Microdialysis; D009043:Motor Activity / Q000187:drug effects / Q000502:physiology; D009714:Nucleus Accumbens / Q000187:drug effects / Q000378:metabolism / Q000503:physiopathology; D051381:Rats; D017207:Rats, Sprague-Dawley; D012201:Reward; D012701:Serotonin / Q000172:deficiency*; D014364:Tryptophan / Q000172:deficiency*
chemical_list: D015259:Dopamine Agents; D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D014364:Tryptophan; D000661:Amphetamine; D004298:Dopamine