Cited by 64Attention Deficit Hyperactivity DisorderNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Social isolation induces deficit of latent learning performance in mice: a putative animal model of attention deficit/hyperactivity disorder

Ouchi, Hirofumi, Ono, Kazuya, Murakami, Yukihisa, Matsumoto, Kinzo·2013·Behavioural Brain Research

Abstract

Social isolation of rodents (SI) elicits a variety of stress responses such as increased aggressiveness, hyper-locomotion, and reduced susceptibility to pentobarbital. To obtain a better understanding of the relevance of SI-induced behavioral abnormalities to psychiatric disorders, we examined the effect of SI on latent learning as an index of spatial attention, and discussed the availability of SI as an epigenetic model of attention deficit hyperactivity disorder (ADHD). Except in specially stated cases, 4-week-old male mice were housed in a group or socially isolated for 3-70 days before experiments. The animals socially isolated for 1 week or more exhibited spatial attention deficit in the water-finding test. Re-socialized rearing for 5 weeks after 1-week SI failed to attenuate the spatial attention deficit. The effect of SI on spatial attention showed no gender difference or correlation with increased aggressive behavior. Moreover, SI had no effect on cognitive performance elucidated in a modified Y-maze or an object recognition test, but it significantly impaired contextual and conditional fear memory elucidated in the fear-conditioning test. Drugs used for ADHD therapy, methylphenidate (1-10 mg/kg, i.p.) and caffeine (0.5-1 mg/kg, i.p.), improved SI-induced latent learning deficit in a manner reversible with cholinergic but not dopaminergic antagonists. Considering the behavioral features of SI mice together with their susceptibility to ADHD drugs, the present findings suggest that SI provides an epigenetic animal model of ADHD and that central cholinergic systems play a role in the effect of methylphenidate on SI-induced spatial attention deficit.

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Crossref · 10.1016/j.bbr.2012.10.029

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  • Rodents reared in isolation displayed more inattentive and impulsive behaviors.

    “displayed more inattentive and impulsive behaviors (Lovic et al., 2011; Ouchi et al., 2013),”

    From The maternal brain and its plasticity in humans (2016) · cites this paper as Ouchi et al., 2013

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Authors
Ouchi, H., Ono, K., Murakami, Y., & Matsumoto, K.
Affiliations
University of Toyama (JP)
Corresponding author
Matsumoto, Kinzo
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2013-02
Volume
238
Pages
146-153
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2116325315
Cited by
64
References
47
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 4 · 2021: 10 · 2020: 6 · 2019: 6 · 2018: 4 · 2017: 4 · 2016: 6 · 2015: 7 · 2014: 5 · 2013: 3
FWCI
3.42
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministry of Education, Culture, Sports, Science and Technology (24659347)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
social isolation, attention deficit hyperactivity disorder, latent learning, spatial attention, fear memory, methylphenidate, caffeine, cholinergic system, resocialization, mice
MeSH terms
Aggression, Central Nervous System Stimulants, Animals, Attention, Attention Deficit Disorder with Hyperactivity, Caffeine, Disease Models, Animal, Fear, Female, Learning, Male, Methylphenidate, Mice, Inbred ICR, Motor Activity, Social Isolation, Spatial Behavior, Recognition, Psychology, Mice

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