Chronic voluntary exercise induces plasticity of noradrenaline-activated dopamine D1-like receptor signaling
Abstract Physical exercise has lasting positive influence on mental health. However, its cellular substrate remains to be elucidated. Recently, dopamine D1-like receptor activation induced by noradrenaline has been suggested to underlie exercise-dependent augmentation of antidepressant effects. The...
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2025-06-01
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| Series: | Molecular Brain |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13041-025-01219-5 |
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| Summary: | Abstract Physical exercise has lasting positive influence on mental health. However, its cellular substrate remains to be elucidated. Recently, dopamine D1-like receptor activation induced by noradrenaline has been suggested to underlie exercise-dependent augmentation of antidepressant effects. The present study demonstrates that exercise induces a long-term enhancement of this atypical catecholaminergic signaling. Noradrenaline potentiates hippocampal mossy fiber synaptic transmission by activating D1-like receptors in mice. Voluntary exercise by wheel running enhanced this noradrenaline-D1-like receptor signaling within 5 days. The enhancement of the noradrenaline-D1-like receptor signaling did not require the integrity of noradrenergic fibers and was maintained for more than 2 weeks after cessation of wheel running. Notably, the effect of exercise was more robustly seen in D1-like receptor signaling activated by noradrenaline as compared with dopamine, indicating particular responsiveness of the noradrenaline-activated D1-like receptor signaling to exercise. These results suggest that exercise could exert lasting influence on brain functioning via plasticity of the hippocampal noradrenaline-D1-like receptor signaling. |
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| ISSN: | 1756-6606 |