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Exp Neurol. 2012 Jan;233(1):12-21. doi: 10.1016/j.expneurol.2011.01.008. Epub 2011 Jan 31.

Stress, stress hormones, and adult neurogenesis.

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1
Department of Psychology, Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA.

Abstract

The dentate gyrus of the hippocampus continues to produce new neurons throughout adulthood. Adult neurogenesis has been linked to hippocampal function, including learning and memory, anxiety regulation and feedback of the stress response. It is thus not surprising that stress, which affects hippocampal function, also alters the production and survival of new neurons. Glucocorticoids, along with other neurochemicals, have been implicated in stress-induced impairment of adult neurogenesis. Paradoxically, increases in corticosterone levels are sometimes associated with enhanced adult neurogenesis in the dentate gyrus. In these circumstances, the factors that buffer against the suppressive influence of elevated glucocorticoids remain unknown; their discovery may provide clues to reversing pathological processes arising from chronic exposure to aversive stress.

PMID:
21281629
PMCID:
PMC3715962
DOI:
10.1016/j.expneurol.2011.01.008
[Indexed for MEDLINE]
Free PMC Article
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