The impact from the aftermath of chronic stress on hippocampal structure and function: Is there a recovery?

J. Bryce Ortiz, Cheryl Conrad

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Chronic stress results in functional and structural changes to the brain and especially the hippocampus. Decades of research have provided insights into the mechanisms by which chronic stress impairs hippocampal-mediated cognition and the corresponding reduction of hippocampal CA3 apical dendritic complexity. Yet, when chronic stress ends and time passes, which we refer to as a "post-stress rest period," hippocampal-mediated spatial memory deficits begin to improve and CA3 apical dendritic arbors increase in complexity. The processes by which the hippocampus improves from a chronically stressed state are not simply the reversal of the mechanisms that produced spatial memory deficits and CA3 apical dendritic retraction. This review will discuss our current understanding of how a chronically stressed hippocampus improves after a post-stress rest period. Untangling the mechanisms that allow for this post-stress plasticity is a critical next step in understanding how to promote resilience in the face of stressors.

Original languageEnglish (US)
JournalFrontiers in Neuroendocrinology
DOIs
StateAccepted/In press - Jan 1 2018

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Hippocampus
Memory Disorders
Cognition
Brain
Research
Spatial Memory

Keywords

  • Brain derived neurotrophic factor
  • Dendritic complexity
  • GABA
  • Hippocampus
  • Recovery
  • Resilience
  • Spatial ability

ASJC Scopus subject areas

  • Endocrine and Autonomic Systems

Cite this

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abstract = "Chronic stress results in functional and structural changes to the brain and especially the hippocampus. Decades of research have provided insights into the mechanisms by which chronic stress impairs hippocampal-mediated cognition and the corresponding reduction of hippocampal CA3 apical dendritic complexity. Yet, when chronic stress ends and time passes, which we refer to as a {"}post-stress rest period,{"} hippocampal-mediated spatial memory deficits begin to improve and CA3 apical dendritic arbors increase in complexity. The processes by which the hippocampus improves from a chronically stressed state are not simply the reversal of the mechanisms that produced spatial memory deficits and CA3 apical dendritic retraction. This review will discuss our current understanding of how a chronically stressed hippocampus improves after a post-stress rest period. Untangling the mechanisms that allow for this post-stress plasticity is a critical next step in understanding how to promote resilience in the face of stressors.",
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