Corticosterone-Mediated BDNF Changes and Their Effects on Adult Neurogenesis in Depression
DOI:
https://doi.org/10.61173/5p3enw85Keywords:
Corticosterone, BDNF, Adult neurogenesis, DepressionAbstract
Adult neurogenesis, the process of generating functional neurons from neural precursor cells in the adult brain, is essential for cognitive function and emotional regulation. Major Depressive Disorder (MDD), characterized by persistent sadness and decreased psychosocial function, is associated with impaired adult hippocampal neurogenesis (AHN). Elevated levels of corticosterone (CORT), a glucocorticoid released in response to stress, have been shown to downregulate brain-derived neurotrophic factor (BDNF), a crucial regulator of neurogenesis, thereby inhibiting AHN. Despite significant advances in understanding the impact of CORT and BDNF on neurogenesis, the precise molecular and cellular pathways involved remain unclear. This review highlights key gaps in the research, particularly the need for a deeper understanding of how glucocorticoid and mineralocorticoid receptors regulate BDNF transcription, the role of autophagic pathways in BDNF degradation, and the influence of glutamatergic signaling on these processes. Future research should focus on elucidating these mechanisms to develop targeted therapeutic strategies, including pharmacological interventions that modulate BDNF and CORT levels and lifestyle modifications like exercise and adequate sleep to enhance neurogenesis. Understanding these complex interactions will be crucial for advancing treatments for depression and improving mental health outcomes.References
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