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Continuous covariability of dopamine and serotonin metabolites in human cerebrospinal fluid. 1998

T D Geracioti, and P E Keck, and N N Ekhator, and S A West, and D G Baker, and K K Hill, and A B Bruce, and M D Wortman
Department of Psychiatry, University of Cincinnati College of Medicine, Ohio, USA.

BACKGROUND Experiments in lower animals and humans have demonstrated the existence of functional interactions between serotonin and dopamine in neuronal tissue. However, the relationship between parameters of serotonin and dopamine neuronal activity over time within the central nervous system (CNS) of the individual human has not yet been established. METHODS We used continuous cerebrospinal fluid (CSF) sampling over 6 hours to test the hypothesis that the serotonin metabolite 5-hydroxyindoleacetic acid (5-HIAA) and the dopamine metabolite homovanillic acid (HVA) significantly covary in concentration over time. Two groups of normal volunteers (total n = 16) were studied at separate hospitals and CSF was assayed for 5-HIAA and HVA by high-performance liquid chromatography (HPLC). Three subjects underwent repeat CSF-withdrawal procedures after a 6-week interval. RESULTS Strong and sustained positive covariability in concentrations of HVA and 5-HIAA was observed in the CSF of individual humans. High intraindividual correlation coefficients were +0.897 and +0.871 in the two normal volunteer groups. The HVA to 5-HIAA concentration ratio in CSF was 2.2 +/- 0.7 with very little variability over intervals ranging from minutes to weeks. CONCLUSIONS The balance between CSF dopamine and serotonin metabolite concentrations remains relatively constant over time in healthy humans. Serial measures of CSF dopamine and serotonin metabolites within the same person could be an effective model in which to explore the interrelationships between these systems in various psychiatric syndromes, in response to drug treatment, and during provactive testing.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009474 Neurons The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM. Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
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
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
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
D005260 Female Females
D006719 Homovanillic Acid A 3-O-methyl ETHER of (3,4-dihydroxyphenyl)acetic acid. 3-Methoxy-4-Hydroxyphenylacetic Acid,4-Hydroxy-3-Methoxyphenylacetic Acid,3 Methoxy 4 Hydroxyphenylacetic Acid,4 Hydroxy 3 Methoxyphenylacetic Acid,Acid, 3-Methoxy-4-Hydroxyphenylacetic,Acid, 4-Hydroxy-3-Methoxyphenylacetic,Acid, Homovanillic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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