Cited by 41Neurogenesis and neuroplasticity mechanismsMemory and Neural MechanismsStress Responses and Cortisol

Voluntary exercise followed by chronic stress strikingly increases mature adult-born hippocampal neurons and prevents stress-induced deficits in’ what-when-where’ memory

Castilla-Ortega, Estela, Rosell-Valle, Cristina, Pedraza, Carmen, Rodríguez de Fonseca, Fernando, Estivill-Torrús, Guillermo, Santín, Luis J.·2014·Neurobiology of Learning and Memory

Abstract

We investigated whether voluntary exercise prevents the deleterious effects of chronic stress on episodic-like memory and adult hippocampal neurogenesis. After bromodeoxyuridine (BrdU) administration, mice were assigned to receive standard housing, chronic intermittent restraint stress, voluntary exercise or a combination of both (stress starting on the seventh day of exercise). Twenty-four days later, mice were tested in a 'what-when-where' object recognition memory task. Adult hippocampal neurogenesis (proliferation, differentiation, survival and apoptosis) and c-Fos expression in the hippocampus and extra-hippocampal areas (medial prefrontal cortex, amygdala, paraventricular hypothalamic nucleus, accumbens and perirhinal cortex) were assessed after behavior. Chronic intermittent restraint stress impaired neurogenesis and the 'when' memory, while exercise promoted neurogenesis and improved the 'where' memory. The 'when' and 'where' memories correlated with c-Fos expression in CA1 and the dentate gyrus, respectively. Furthermore, analysis suggested that each treatment induced a distinct pattern of functional connectivity among the areas analyzed for c-Fos. In the animals in which stress and exercise were combined, stress notably reduced the amount of voluntary exercise performed. Nevertheless, exercise still improved memory and counteracted the stress induced-deficits in neurogenesis and behavior. Interestingly, compared with the other three treatments, the stressed exercising animals showed a larger increase in cell survival, the maturation of new neurons and apoptosis in the dentate gyrus, with a considerable increase in the number of 24-day-old BrdU+cells that differentiated into mature neurons. The interaction between exercise and stress in enhancing the number of adult-born hippocampal neurons supports a role of exercise-induced neurogenesis in stressful conditions.

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Crossref · 10.1016/j.nlm.2013.12.001

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Authors
Castilla-Ortega, E., Rosell-Valle, C., Pedraza, C., Rodríguez de Fonseca, F., Estivill-Torrús, G., & Santín, L. J.
Affiliations
Instituto de Investigación Biomédica de Málaga (ES)
Corresponding author
Santín, Luis J.
Venue
Neurobiology of Learning and Memory
Publisher
Elsevier BV
Published
2014-03
Volume
109
Pages
62-73
ISSN
1074-7427 (ISSN-L)
OpenAlex
W2064758288
Cited by
41
References
72
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 6 · 2022: 5 · 2020: 4 · 2019: 3 · 2018: 3 · 2017: 3 · 2016: 3 · 2015: 7 · 2014: 3
FWCI
1.59
Type
journal article
Language
en
Open access
closed
Locations
  • Neurobiology of Learning and Memory (publishedVersion)
  • PubMed (publishedVersion)
Funders
Universidad de Málaga
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
voluntary exercise, chronic stress, adult hippocampal neurogenesis, episodic-like memory, object recognition memory, Fos expression, dentate gyrus, CA1, neuronal apoptosis, cell survival, neurogenesis, restraint stress, hippocampal functional connectivity
MeSH terms
Animals, Chronic Disease, Hippocampus, Male, Mice, Inbred C57BL, Motor Activity, Neurons, Restraint, Physical, Stress, Psychological, Recognition, Psychology, Mice, Neurogenesis

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