Cited by 311Stress Responses and CortisolTreatment of Major DepressionResilience and Mental Health

Resilience to Chronic Stress Is Mediated by Hippocampal Brain-Derived Neurotrophic Factor

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Taliaz, Dekel, Loya, Assaf, Gersner, Roman, Haramati, Sharon, Chen, Alon, Zangen, Abraham·2011·The Journal of Neuroscience

Abstract

Chronic stress is a trigger for several psychiatric disorders, including depression; however, critical individual differences in resilience to both the behavioral and the neurochemical effects of stress have been reported. A prominent mechanism by which the brain reacts to acute and chronic stress is activation of the hypothalamic–pituitary–adrenal (HPA) axis, which is inhibited by the hippocampus via a polysynaptic circuit. Alterations in secretion of stress hormones and levels of brain-derived neurotrophic factor (BDNF) in the hippocampus were implicated in depression and the effects of antidepressant medications. However, the potential role of hippocampal BDNF in behavioral resilience to chronic stress and in the regulation of the HPA axis has not been evaluated. In the present study, Sprague Dawley rats were subjected to 4 weeks of chronic mild stress (CMS) to induce depressive-like behaviors after lentiviral vectors were used to induce localized BDNF overexpression or knockdown in the hippocampus. The behavioral outcome was measured during 3 weeks after the CMS procedure, then plasma samples were taken for measurements of corticosterone levels, and finally hippocampal tissue was taken for BDNF measurements. We found that hippocampal BDNF expression plays a critical role in resilience to chronic stress and that reduction of hippocampal BDNF expression in young, but not adult, rats induces prolonged elevations in corticosterone secretion. The present study describes a mechanism for individual differences in responses to chronic stress and implicates hippocampal BDNF in the development of neural circuits that control adequate stress adaptations.

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Crossref · 10.1523/jneurosci.5725-10.2011

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  • Chronic stress leads to depression- or anxiety-like behaviors in only a subset of laboratory animals.

    “chronic stress leads to the development of depression– or anxiety–like behaviors in only a subset of laboratory animals22–27.”

    From Neurobiology of resilience (2012) · cites this paper as [22]

  • Over-expression of BDNF in the hippocampus leads to resilience to chronic stress.

    “With regards to depression, systemic or intra-hippocampal administration of BDNF exerts antidepressant-like effects 153–155, and over-expression of BDNF in the hippocampus leads to resilience to chronic stress 156.”

    From Mechanisms of ketamine action as an antidepressant (2018) · cites this paper as [156]

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Authors
Taliaz, D., Loya, A., Gersner, R., Haramati, S., Chen, A., & Zangen, A.
Affiliations
Weizmann Institute of Science (IL)
Corresponding author
Zangen, Abraham
Venue
The Journal of Neuroscience
Published
2011-03-23
Volume
31
Issue
12
Pages
4475-4483
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1965232611
Cited by
311
References
31
Citations by year
2026: 10 · 2025: 14 · 2024: 12 · 2023: 32 · 2022: 21 · 2021: 20 · 2020: 16 · 2019: 27 · 2018: 21 · 2017: 21 · 2016: 17 · 2015: 29 · 2014: 19 · 2013: 20 · 2012: 22
FWCI
8.74
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Israel Science Foundation (1486/10)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Social Sciences › Psychology › Clinical Psychology › Resilience and Mental Health
Keywords
chronic stress, resilience, hippocampus, brain-derived neurotrophic factor, chronic mild stress, depression, hypothalamic-pituitary-adrenal axis, corticosterone, BDNF overexpression, individual differences, stress adaptation, lentiviral vectors
MeSH terms
Aging, Animals, Chronic Disease, Corticosterone, Environment, Enzyme-Linked Immunosorbent Assay, Exploratory Behavior, Hippocampus, Hydrocortisone, Hypothalamo-Hypophyseal System, Locomotion, Male, Microinjections, Molecular Sequence Data, Pituitary-Adrenal System, Stress, Psychological, Swimming, Rats, Sprague-Dawley, Brain-Derived Neurotrophic Factor, Reverse Transcriptase Polymerase Chain Reaction, Rats, Resilience, Psychological, Gene Knockdown Techniques

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