Cited by 110Stress Responses and CortisolNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

Stress‐induced activation of the immediate early gene Arc (activity‐regulated cytoskeleton‐associated protein) is restricted to telencephalic areas in the rat brain: relationship to c‐fos mRNA

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Ons, Sheila, Martí, Octavi, Armario, Antonio·2004·Journal of Neurochemistry

Abstract

Arc is an effector immediate early gene whose expression is induced in situations of increased neuronal activity. However, there is no report on the influence of stress on Arc expression. Here, we compared the induction of both c‐fos and Arc mRNAs in the brain of rats exposed to one of three different stressful situations: novel environment, forced swimming and immobilization. An absent or weak c‐fos mRNA signal was observed in control rats, whereas those exposed to one of three stressors showed enhanced c‐fos expression in a wide range of brain areas. Constitutive Arc expression was observed in some areas such as cortex, striatum, hippocampus, reticular thalamic nucleus and cerebellar cortex. In response to stressors, a strong induction of Arc was observed, but the pattern was different from that of c‐fos. For instance, activation of Arc but not c‐fos was observed in the nucleus accumbens after immobilization and in the hippocampus after novel environment. No Arc induction was observed in diencephalic and brainstem areas. The present data show that Arc has a neuroanatomically restricted pattern of induction in the brain after emotional stress. Telencephalic activation suggests that a more intense induction of synaptic plasticity is occurring in this area after exposure to emotional stressors.

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Crossref · 10.1111/j.1471-4159.2004.02396.x

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  • Arc has a more restricted pattern of expression than Fos in response to stress, being expressed primarily within telencephalic areas, making it problematic for mapping global network patterns including hypothalamic and midbrain structures.

    “However, Arc has a much more restricted pattern of expression than Fos in response to stress: Arc appears to be expressed primarily within telencephalic areas116 and is therefore problematic for mapping global network patterns of activation, including hypothalamic and midbrain structures.”

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Authors
Ons, S., Martí, O., & Armario, A.
Affiliations
Universitat Autònoma de Barcelona (ES)
Corresponding author
Armario, Antonio
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2004-04-29
Volume
89
Issue
5
Pages
1111-1118
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1978122462
Cited by
110
References
29
Citations by year
2025: 3 · 2024: 2 · 2023: 3 · 2022: 7 · 2021: 1 · 2020: 3 · 2019: 7 · 2018: 9 · 2017: 6 · 2016: 3 · 2015: 6 · 2014: 3 · 2013: 8 · 2012: 5
FWCI
2.29
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
Arc, activity-regulated cytoskeleton-associated protein, c-fos, immediate early genes, emotional stress, stress-responsive gene expression, telencephalon, hippocampus, nucleus accumbens, novel environment, forced swim test, immobilization, synaptic plasticity, rat brain
MeSH terms
Animals, Autoradiography, Brain, Cytoskeletal Proteins, Male, Nerve Tissue Proteins, RNA, Messenger, Stress, Psychological, Telencephalon, Proto-Oncogene Proteins c-fos, Rats, Sprague-Dawley, In Situ Hybridization, Immediate-Early Proteins, Rats

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