Cited by 465Neuropeptides and Animal PhysiologyStress Responses and CortisolNeurotransmitter Receptor Influence on Behavior

Dynorphin, stress, and depression

Open access
Knoll, Allison T., Carlezon, William A.·2010·Brain Research

Abstract

Stress is most often associated with aversive states. It rapidly induces the release of hormones and neuropeptides including dynorphin, which activates kappa opioid receptors (KORs) in the central and peripheral nervous systems. In animal models, many aversive effects of stress are mimicked or exacerbated by stimulation of KORs in limbic brain regions. Although KOR signaling during acute stress may increase physical ability (by producing analgesia) and motivation to escape a threat (by producing aversion), prolonged KOR signaling in response to chronic or uncontrollable stress can lead to persistent expression of behavioral signs that are characteristic of human depressive disorders (i.e., "prodepressive-like" signs). Accumulating evidence suggests that KORs contribute to the progressive amplification (sensitization) of stress-induced behaviors that occurs with repeated exposure to stress. Many of the aversive effects of stress are blocked by KOR antagonists, suggesting that these agents may have potential as therapeutics for stress-related conditions such as depression and anxiety disorders. This review summarizes current data on how KOR systems contribute to the acute (rapid), delayed, and cumulative molecular and behavioral effects of stress. We focus on behavioral paradigms that provide insight on interactions between stress and KOR function within each of these temporal categories. Using a simplified model, we consider the time course and mechanism of KOR-mediated effects in stress and suggest future directions that may be useful in determining whether KOR antagonists exert their therapeutic effects by preventing the development of stress-induced behaviors, the expression of stress-induced behaviors, or both.

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Crossref · 10.1016/j.brainres.2009.09.074

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  1. American Psychiatric Association DSM-IV-TR 2000 Diagnostic and statistical manual of mental disorders 4 text revision Edition Washington, DC

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Authors
Knoll, A. T., & Carlezon, W. A.
Affiliations
Harvard University (US)
Corresponding author
Carlezon, William A.
Venue
Brain Research
Publisher
Elsevier BV
Published
2010-02
Volume
1314
Pages
56-73
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2029584624
Cited by
465
References
227
Citations by year
2026: 15 · 2025: 15 · 2024: 25 · 2023: 25 · 2022: 33 · 2021: 28 · 2020: 24 · 2019: 38 · 2018: 36 · 2017: 24 · 2016: 33 · 2015: 30 · 2014: 30 · 2013: 40 · 2012: 32
FWCI
9.27
Type
journal article
Language
en
Open access
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r01mh063266-25)
  • National Institute of Mental Health (MH063266, R01-MH063266, F31MH078473, MH078473)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
dynorphin, kappa opioid receptor, stress, depression, chronic stress, aversive behavior, stress sensitization, anxiety disorders, limbic system, analgesia, escape motivation
MeSH terms
Animals, Brain, Chronic Disease, Depressive Disorder, Disease Models, Animal, Dynorphins, Fear, Humans, Narcotic Antagonists, Stress, Psychological, Comorbidity, Receptors, Opioid, kappa

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