Transcriptional and Translational Regulation of Phosphodiesterase Type IV Isozymes in Rat Brain by Electroconvulsive Seizure and Antidepressant Drug Treatment
| Autor: | Masashi Nibuya, Haruhiko Suda, Shiro Suda, Takeo Ishiguro |
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| Rok vydání: | 2002 |
| Předmět: |
Male
Imipramine medicine.medical_specialty Transcription Genetic Central nervous system In situ hybridization Hippocampal formation Biochemistry Isozyme Rats Sprague-Dawley Cellular and Molecular Neuroscience Internal medicine medicine Animals heterocyclic compounds RNA Messenger Chromatography High Pressure Liquid Rolipram Electroshock Cyclic nucleotide phosphodiesterase Chemistry Dentate gyrus Brain Phosphodiesterase Blotting Northern musculoskeletal system Antidepressive Agents Cyclic Nucleotide Phosphodiesterases Type 4 Rats Enzyme Activation Isoenzymes enzymes and coenzymes (carbohydrates) medicine.anatomical_structure Endocrinology 3' 5'-Cyclic-AMP Phosphodiesterases Protein Biosynthesis sense organs Injections Intraperitoneal circulatory and respiratory physiology medicine.drug |
| Zdroj: | Journal of Neurochemistry. 71:1554-1563 |
| ISSN: | 1471-4159 0022-3042 |
| DOI: | 10.1046/j.1471-4159.1998.71041554.x |
| Popis: | We examined the influence of electroconvulsive seizure (ECS) and imipramine (IMI) treatment on the transcription and translation of cyclic nucleotide phosphodiesterase type IV (PDE IV) isozymes in the rat brain. Our in situ hybridization studies revealed an increase of PDE IV-B mRNA level in various brain regions after acute ECS. However, the increase of PDE IV activity was produced not by acute but by chronic ECS treatment in the frontal cortex. Increased PDE IV-B mRNA expression in frontal but not in hippocampal subfields was induced also after chronic ECS treatment. Although an increase in PDE IV-A mRNA expression of the dentate gyrus in the hippocampus was observed, no change of PDE IV activity was produced in the hippocampus by acute or chronic ECS treatment. These results suggest that the repeated increases of PDE IV-B mRNA expression are attributable to the increase of PDE IV translation. Increased PDE IV-B transcription and PDE IV translation in the frontal cortex were also produced after chronic IMI treatment. This is the first report demonstrating an expressional regulation of Drosophila melanogaster dunce (dnc) gene homologue PDE IV isozymes in the brain. Although no pathophysiological conditions with reduced PDE IV activity in the nervous system are known except for a learning deficit in the mutant fly dnc−, our results suggest possible treatments to cope with reduced PDE IV activity. |
| Databáze: | OpenAIRE |
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