Prefrontal cortical trkB, glucocorticoids, and their interactions in stress and developmental contexts
| Autor: | Elizabeth T. Barfield, Shannon L. Gourley |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Dendritic spine Cognitive Neuroscience Prefrontal Cortex Context (language use) Tropomyosin receptor kinase B Article 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine Glucocorticoid receptor Metaplasticity Animals Humans Receptor trkB Chronic stress Prefrontal cortex Glucocorticoids biology musculoskeletal neural and ocular physiology 030104 developmental biology Neuropsychology and Physiological Psychology nervous system biology.protein Neuroscience 030217 neurology & neurosurgery Stress Psychological Neurotrophin |
| Zdroj: | Neuroscience and biobehavioral reviews. 95 |
| ISSN: | 1873-7528 |
| Popis: | The tropomyosin/tyrosine receptor kinase B (trkB) and glucocorticoid receptor (GR) regulate neuron structure and function and the hormonal stress response. Meanwhile, disruption of trkB and GR activity (e.g., by chronic stress) can perturb neuronal morphology in cortico-limbic regions implicated in stressor-related illnesses like depression. Further, several of the short- and long-term neurobehavioral consequences of stress depend on the developmental timing and context of stressor exposure. We review how the levels and activities of trkB and GR in the prefrontal cortex (PFC) change during development, interact, are modulated by stress, and are implicated in depression. We review evidence that trkB- and GR-mediated signaling events impact the density and morphology of dendritic spines, the primary sites of excitatory synapses in the brain, highlighting effects in adolescents when possible. Finally, we review the role of neurotrophin and glucocorticoid systems in stress-related metaplasticity. We argue that better understanding the long-term effects of developmental stressors on PFC trkB, GR, and related factors may yield insights into risk for chronic, remitting depression and related neuropsychiatric illnesses. |
| Databáze: | OpenAIRE |
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