Cited by 162Memory and Neural MechanismsNeurogenesis and neuroplasticity mechanismsStress Responses and Cortisol

Effects of environmental enrichment on cognitive function and hippocampal NGF in the non-handled rats

Pham, Therese M, Söderström, Stine, Winblad, Bengt, Mohammed, Abdul H·1999·Behavioural Brain Research

Abstract

In this study we examine whether exposure to differential housing after weaning would counteract the effects of postnatal handling (H) or nonhandling (NH) treatment by affecting learning and memory processes in young rats. In addition, we seek to determine if experience in enriched environment would alter hippocampal nerve growth factor (NGF) levels which is one of the factors known to be involved in the regulation of the survival and differentiation of developing basal forebrain neurones. Rats were either exposed to handling treatment, or left undisturbed starting day 1 after birth through day 21. After weaning on day 22, we exposed half of the H rats and half of the NH rats to environmental enrichment for 60 days. The other respective half of the rats was housed in isolated environmental condition (IC). Behavioural measures were taken in open field test, and spatial water maze test. Exposure to enriched environment following postnatal handling and nonhandling increased hippocampal NGF levels, and improved cognitive function in the both groups, with NH rats being more responsive to the effects of enrichment. Our results suggest that environmental enrichment has the potential to prevent or reduce the cognitive and neurochemical deficits in the adult animals associated with nonhandling.

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Crossref · 10.1016/s0166-4328(99)00019-4

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  • Rodent studies show brain morphology changes after manipulation of the early postnatal environment.

    “Therefore, it is interesting to note that there is an impressive body of evidence from rodent studies showing changes in brain morphology in association with manipulation of the early postnatal environment (e.g. Meaney et al., 1991; Pham et al., 1999; Helmeke et al., 2001; Huot et al., 2002; Roceri et al., 2002; Bredy et al., 2003; Ovtscharoff et al., 2006; Fabricius et al., 2008).”

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Authors
Pham, T. M., Söderström, S., Winblad, B., & Mohammed, A. H.
Affiliations
  • Karolinska Institutet (SE)
  • Uppsala University (SE)
Corresponding author
Pham, Therese M
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
1999-08
Volume
103
Issue
1
Pages
63-70
ISSN
0166-4328 (ISSN-L)
OpenAlex
W1998738051
Cited by
162
References
37
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 6 · 2022: 7 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 3 · 2017: 5 · 2016: 2 · 2015: 5 · 2014: 11 · 2013: 5 · 2012: 8
FWCI
2.77
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Vetenskapsrådet
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
environmental enrichment, postnatal handling, cognitive function, learning and memory, spatial learning, differential housing, individual housing, brain development, open field behavior
MeSH terms
Animals, Cognition, Environment, Female, Handling, Psychological, Hippocampus, Hypothalamus, Motor Activity, Nerve Growth Factors, Pregnancy, Rats, Sprague-Dawley, Maze Learning, Rats

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