Biomaterial Database

In vivo measures of monoamines during amphetamine-induced behaviors in rats. 1990

R Kuczenski, and D S Segal

Department of Psychiatry, University of California, San Diego, La Jolla.

1. Using a removable in vivo microdialysis probe, and remote sample collection, the temporal and dose-related behavioral and monoamine response to amphetamine (AMPH) were examined in freely-moving rats. Extracellular dopamine, serotonin and their metabolites were monitored concomitant with detailed characterization of the locomotor and stereotypy profiles. Consistent with previous results, AMPH (0.5-5.0 mg/kg) induced a rapid dose-dependent increase in dopamine concentration and decrease in the concentrations of the dopamine metabolites. Dopamine and metabolites exhibited contrasting temporal and dose-related patterns, suggesting that the decline in dopamine metabolites is functionally dissociated from the AMPH-enhanced dopamine release, and that metabolite levels do not provide an accurate index of functional dopaminergic activity. 2. Dose response comparisons revealed a significant relationship between AMPH-induced increases in behavioral perseveration and the magnitude and duration of the dopamine release. However, the temporal patterns of the neurotransmitter response and individual components of stereotypy were not parallel, suggesting that the presence of stereotypies is not associated simply with quantitative differences in striatal dopamine release. 3. Consistent with this interpretation, we found that a variety of manipulations including reserpine, apomorphine, and chronic amphetamine pretreatment, produced a dissociation between the alterations in the behavioral and dopaminergic responses to amphetamine. The behavioral response to amphetamine may be influenced by the interaction between levels of dopamine and serotonin, by the state of their respective receptors, and by the relative contributions of additional dopaminergic systems.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008832	Microchemistry	The development and use of techniques and equipment to study or perform chemical reactions, with small quantities of materials, frequently less than a milligram or a milliliter.
D009043	Motor Activity	Body movements of a human or an animal as a behavioral phenomenon.	Activities, Motor,Activity, Motor,Motor Activities
D012110	Reserpine	An alkaloid found in the roots of Rauwolfia serpentina and R. vomitoria. Reserpine inhibits the uptake of norepinephrine into storage vesicles resulting in depletion of catecholamines and serotonin from central and peripheral axon terminals. It has been used as an antihypertensive and an antipsychotic as well as a research tool, but its adverse effects limit its clinical use.	Raunervil,Raupasil,Rausedil,Rausedyl,Serpasil,Serpivite,V-Serp,V Serp
D001921	Brain	The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.	Encephalon
D003956	Dialysis	A process of selective diffusion through a membrane. It is usually used to separate low-molecular-weight solutes which diffuse through the membrane from the colloidal and high-molecular-weight solutes which do not. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Dialyses
D004298	Dopamine	One of the catecholamine NEUROTRANSMITTERS in the brain. It is derived from TYROSINE and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action.	Hydroxytyramine,3,4-Dihydroxyphenethylamine,4-(2-Aminoethyl)-1,2-benzenediol,Dopamine Hydrochloride,Intropin,3,4 Dihydroxyphenethylamine,Hydrochloride, Dopamine
D004305	Dose-Response Relationship, Drug	The relationship between the dose of an administered drug and the response of the organism to the drug.	Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D000661	Amphetamine	A powerful central nervous system stimulant and sympathomimetic. Amphetamine has multiple mechanisms of action including blocking uptake of adrenergics and dopamine, stimulation of release of monamines, and inhibiting monoamine oxidase. Amphetamine is also a drug of abuse and a psychotomimetic. The l- and the d,l-forms are included here. The l-form has less central nervous system activity but stronger cardiovascular effects. The d-form is DEXTROAMPHETAMINE.	Desoxynorephedrin,Levoamphetamine,Phenopromin,l-Amphetamine,Amfetamine,Amphetamine Sulfate,Amphetamine Sulfate (2:1),Centramina,Fenamine,Mydrial,Phenamine,Thyramine,levo-Amphetamine,Sulfate, Amphetamine,l Amphetamine,levo Amphetamine
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia