Effects of RU486 treatment after single prolonged stress depend on the post-stress interval
| Autor: | Jolanthe Lingeman, Onno C. Meijer, Jinlan Ding, Fang Han, Marcia Santos da Silva, Xinzhao Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Male medicine.medical_specialty Biology Drug Administration Schedule Stress Disorders Post-Traumatic Tacrolimus Binding Proteins 03 medical and health sciences Cellular and Molecular Neuroscience chemistry.chemical_compound 0302 clinical medicine Hormone Antagonists Receptors Glucocorticoid Internal medicine Gene expression medicine Endocrine system Animals Behaviour Sgk1 Rats Wistar Molecular Biology Antiglucocorticoid Stressor Antagonist Brain Cell Biology Mifepristone DNA Methylation Single prolonged stress Rats 030104 developmental biology Endocrinology FKBP5 chemistry SGK1 sense organs 030217 neurology & neurosurgery medicine.drug |
| Zdroj: | Molecular and Cellular Neuroscience, 108. ACADEMIC PRESS INC ELSEVIER SCIENCE |
| Popis: | The Single Prolonged Stress protocol is considered a model for PTSD, as it induces long lasting changes in rat behaviour and endocrine regulation. Previous work demonstrated that some of these changes can be prevented by treatment with the glucocorticoid receptor antagonist RU486, administered a week after the stressor. The current study evaluated the effects of an earlier intervention with RU486, as evaluated 1 week after SPS-exposure. Most RU486 effects occurred independent of prior stress, except for the reversal of a stress-induced increase in locomotor behaviour. The accompanying changes in gene expression depended on gene, brain region, and time. DNA methylation of the robustly down-regulated Fkbp5 gene was dissociated of changes in mRNA expression. The findings reinforce the long term effects of GR antagonist treatment, but also emphasize the need to evaluate changes over time to allow the identification of robust correlates between gene expression and behavioural/endocrine outcome of stressful experiences. |
| Databáze: | OpenAIRE |
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