Cited by 146Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchNeurogenesis and neuroplasticity mechanisms

Disruption of the perineuronal net in the hippocampus or medial prefrontal cortex impairs fear conditioning

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Hylin, Michael J., Orsi, Sara A., Moore, Anthony N., Dash, Pramod K.·2013·Learning & Memory

Abstract

The perineuronal net (PNN) surrounds neurons in the central nervous system and is thought to regulate developmental plasticity. A few studies have shown an involvement of the PNN in hippocampal plasticity and memory storage in adult animals. In addition to the hippocampus, plasticity in the medial prefrontal cortex (mPFC) has been demonstrated to be critical for the storage of long-term memory, particularly memories for temporally separated events. In the present study, we examined the role of PNN in the acquisition and retention of memories for trace (in which the conditioned and unconditioned stimuli are temporally separated) and delayed (in which the conditioned and unconditioned stimuli overlap) fear conditioning in both the hippocampus and the mPFC. Consistent with a role for the hippocampus in memory storage in both delayed and trace fear conditioning, removal of hippocampal PNN disrupted contextual and trace fear memory. Disruption of the PNN in the mPFC impaired long-term trace and conditioned stimulus (CS)-elicited fear memory in the trace fear conditioning task. Interestingly, CS-elicited fear memory was also impaired when a delayed fear conditioning paradigm was used. These findings further support a role for the PNN in neural plasticity and implicate PNN-regulated plasticity in neocortical memory storage.

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  • PNN degradation in the hippocampus, medial prefrontal cortex (mPFC), anterior cingulate cortex, BLA, or auditory cortex impairs the expression of fear conditioning.

    “Since then, other studies have shown that PNN degradation in the hippocampus, medial prefrontal cortex (mPFC), anterior cingulate cortex, BLA, or auditory cortex impairs the expression of fear conditioning [62, 83–85].”

    From The extracellular matrix and perineuronal nets in memory (2022) · cites this paper as [83]

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Authors
Hylin, M. J., Orsi, S. A., Moore, A. N., & Dash, P. K.
Venue
Learning & Memory
Published
2013-04-16
Volume
20
Issue
5
Pages
267-273
ISSN
  • 1072-0502 (ISSN-L)
  • 1549-5485
OpenAlex
W1972625759
Cited by
143
References
42
Citations by year
2026: 8 · 2025: 13 · 2024: 12 · 2023: 13 · 2022: 14 · 2021: 15 · 2020: 17 · 2019: 13 · 2018: 5 · 2017: 14 · 2016: 8 · 2015: 3 · 2014: 6 · 2013: 2
Type
posted content
Language
en
Open access
Locations
  • Learning & Memory (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (R01MH072933, MH072933)
  • National Institute of Neurological Disorders and Stroke (NS053588, R01NS053588)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
perineuronal nets, fear conditioning, hippocampus, medial prefrontal cortex, contextual fear memory, neuroplasticity, memory storage
MeSH terms
Animals, Conditioning, Classical, Extracellular Matrix, Fear, Hippocampus, Hyaluronoglucosaminidase, Male, Neurons, Prefrontal Cortex, Chondroitin ABC Lyase, Rats, Long-Evans, Rats

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