The effects of a single acute dose of dexamethasone on monoamine and metabolite levels in rat brain
| Autor: | Anthony J. Rothschild, Alan F. Schatzberg, Marijean M. Miller, Melinda S. Saloman, Jonathan O. Cole, Philip J. Langlais, Edward D. Bird, Jan E. Lerbinger |
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| Rok vydání: | 1985 |
| Předmět: |
Male
Serotonin medicine.medical_specialty Dopamine Hypothalamus Pharmacology Serotonergic Dexamethasone Nucleus Accumbens General Biochemistry Genetics and Molecular Biology Methoxyhydroxyphenylglycol Norepinephrine Catecholamines Internal medicine Limbic System medicine Animals Humans General Pharmacology Toxicology and Pharmaceutics Brain Chemistry Cerebral Cortex Chemistry Dopaminergic Homovanillic Acid Rats Inbred Strains General Medicine Hydroxyindoleacetic Acid Corpus Striatum Rats Monoamine neurotransmitter Endocrinology Cats Catecholamine 3 4-Dihydroxyphenylacetic Acid medicine.drug |
| Zdroj: | Life Sciences. 36:2491-2501 |
| ISSN: | 0024-3205 |
| DOI: | 10.1016/0024-3205(85)90145-6 |
| Popis: | Twenty male Sprague-Dawley rats were injected intraperitoneally with either 20 micrograms of dexamethasone or an equivalent volume of saline. The rats were then sacrificed at either one or four hours after the injections and their brains analyzed for monoamine and metabolite content using High Performance Liquid Chromatography with Electrochemical Detection. Significant effects were seen in dopaminergic and serotonergic systems, but these effects varied depending on the area of rat brain studied. Significant increases in dopamine (DA) levels were seen in the hypothalamus and nucleus accumbens of the dexamethasone treated rats when compared with saline treated rats. There was no significant effect of dexamethasone on DA levels in frontal or striatal brain areas. In the dexamethasone treated rats a significant increase in serotonin (5-HT) was observed in the hypothalamus; a significant decrease in 5-HT was observed in the frontal cortex. Biological and clinical implications of these findings are discussed. |
| Databáze: | OpenAIRE |
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