Cited by 122Neuroendocrine regulation and behaviorStress Responses and CortisolMemory and Neural Mechanisms

Early life stress impairs social recognition due to a blunted response of vasopressin release within the septum of adult male rats

Lukas, Michael, Bredewold, Remco, Landgraf, Rainer, Neumann, Inga D., Veenema, Alexa H.·2011·Psychoneuroendocrinology

Abstract

Early life stress poses a risk for the development of psychopathologies characterized by disturbed emotional, social, and cognitive performance. We used maternal separation (MS, 3h daily, postnatal days 1-14) to test whether early life stress impairs social recognition performance in juvenile (5-week-old) and adult (16-week-old) male Wistar rats. Social recognition was tested in the social discrimination test and defined by increased investigation by the experimental rat towards a novel rat compared with a previously encountered rat. Juvenile control and MS rats demonstrated successful social recognition at inter-exposure intervals of 30 and 60 min. However, unlike adult control rats, adult MS rats failed to discriminate between a previously encountered and a novel rat after 60 min. The social recognition impairment of adult MS rats was accompanied by a lack of a rise in arginine vasopressin (AVP) release within the lateral septum seen during social memory acquisition in adult control rats. This blunted response of septal AVP release was social stimulus-specific because forced swimming induced a rise in septal AVP release in both control and MS rats. Retrodialysis of AVP (1 μg/ml, 3.3 μl/min, 30 min) into the lateral septum during social memory acquisition restored social recognition in adult MS rats at the 60-min interval. These studies demonstrate that MS impairs social recognition performance in adult rats, which is likely caused by blunted septal AVP activation. Impaired social recognition may be linked to MS-induced changes in other social behaviors like aggression as shown previously.

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Crossref · 10.1016/j.psyneuen.2010.11.007

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  • Social discrimination was impaired after daily maternal separation in male rats.

    “Social discrimination (or preference for social novelty; i.e., the ability to discriminate between a familiar and unfamiliar conspecific) was impaired after daily maternal separation in male rats (Lukas et al., 2011)”
  • Mice with reduced AVP release in the LS or lacking AVP V1aR have selective deficits in social memory, and re-introduction of AVP or V1aR in the LS rescues social memory.

    “Mice with reduced AVP release in the LS, or that are lacking AVP V1aR entirely, have similarly selective deficits in social memory, and re-introduction of AVP or V1aR respectively in the LS results in rescue of social memory (Bielsky et al 2004; Bielsky et al 2005; Lukas et al 2011).”

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Authors
Lukas, M., Bredewold, R., Landgraf, R., Neumann, I. D., & Veenema, A. H.
Affiliations
  • University of Regensburg (DE)
  • Max Planck Society (DE)
Corresponding author
Veenema, Alexa H.
Venue
Psychoneuroendocrinology
Publisher
Elsevier BV
Published
2011-07
Volume
36
Issue
6
Pages
843-853
ISSN
0306-4530 (ISSN-L)
OpenAlex
W2109345981
Cited by
122
References
61
Citations by year
2026: 8 · 2025: 2 · 2024: 6 · 2023: 4 · 2022: 8 · 2021: 10 · 2020: 5 · 2019: 11 · 2018: 7 · 2017: 7 · 2016: 9 · 2015: 9 · 2014: 6 · 2013: 15 · 2012: 9
FWCI
13.06
Type
journal article
Language
en
Open access
closed
Locations
  • Psychoneuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Regensburg Publication Server (University of Regensburg) (acceptedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
National Institutes of Health
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
early life stress, maternal separation, social recognition, social memory, vasopressin, lateral septum, vasopressin release, forced swim test, retrodialysis, social discrimination, young rats, adult rats
MeSH terms
Age Factors, Animals, Arginine Vasopressin, Discrimination, Psychological, Exploratory Behavior, Male, Maternal Deprivation, Septum Pellucidum, Social Behavior, Swimming, Rats, Wistar, Microdialysis, Recognition, Psychology, Rats

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