Cited by 467Tryptophan and brain disordersSchizophrenia research and treatmentMaternal Mental Health During Pregnancy and Postpartum

Immune activation during pregnancy in mice leads to dopaminergic hyperfunction and cognitive impairment in the offspring: a neurodevelopmental animal model of schizophrenia

Ozawa, Kimiyoshi, Hashimoto, Kenji, Kishimoto, Takashi, Shimizu, Eiji, Ishikura, Hiroshi, Iyo, Masaomi·2006·Biological Psychiatry

Abstract

Background Maternal viral infection is associated with increased risk for schizophrenia. It is hypothesized that the maternal immune response to viruses may influence fetal brain development and lead to schizophrenia.Methods To mimic a viral infection, the synthetic double strand RNA polyriboinosinic-polyribocytidilic acid (poly I:C) was administered into pregnant mice. Behavioral evaluations (thigmotaxis, methamphetamine [MAP]-induced hyperactivity, novel-object recognition test [NORT]), sensorimotor gating (prepulse inhibition [PPI]), and biochemical evaluation of the dopaminergic function of the offspring of phosphate-buffered saline (PBS)-treated dams (PBS-mice) and that of poly I:C-treated dams (poly I:C-mice) were examined.Results In juveniles, no difference was found between the poly I:C-mice and PBS-mice. However, in adults, the poly I:C-mice exhibited attenuated thigmotaxis, greater response in MAP-induced (2 mg/kg) hyperlocomotion, deficits in PPI, and cognitive impairment in NORT compared with the PBS-mice. Cognitive impairment in the adult poly I:C-mice could be improved by subchronic administration of clozapine (5.0 mg/kg) but not haloperidol (.1 mg/kg). Increased dopamine (DA) turnover and decreased receptor binding of D2-like receptors, but not D1-like receptors, in the striatum were found in adult poly I:C-mice.Conclusions Prenatal poly I:C administration causes maturation-dependent increased subcortical DA function and cognitive impairment in the offspring, indicating a neurodevelopmental animal model of schizophrenia.

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Crossref · 10.1016/j.biopsych.2005.07.031

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Authors
Ozawa, K., Hashimoto, K., Kishimoto, T., Shimizu, E., Ishikura, H., & Iyo, M.
Affiliations
Chiba University (JP)
Corresponding author
Ozawa, Kimiyoshi
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2006-03
Volume
59
Issue
6
Pages
546-554
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2031337229
Cited by
467
References
64
Citations by year
2026: 9 · 2025: 8 · 2024: 18 · 2023: 13 · 2022: 30 · 2021: 19 · 2020: 19 · 2019: 21 · 2018: 29 · 2017: 11 · 2016: 24 · 2015: 31 · 2014: 28 · 2013: 25 · 2012: 29
FWCI
6.50
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
Keywords
maternal immune activation, poly(I:C), prenatal viral infection, schizophrenia, cognitive impairment, prepulse inhibition, novel object recognition, clozapine, D2-like receptors, dopamine turnover, striatum, thigmotaxis
MeSH terms
Animals, Animals, Newborn, Antibodies, Viral, Brain, Clozapine, Cognition, Disease Models, Animal, Exploratory Behavior, Female, Form Perception, Methamphetamine, Mice, Inbred BALB C, Motor Activity, Neural Inhibition, Orientation, Poly I-C, Pregnancy, Pregnancy Complications, Infectious, Pregnancy, Animal, Prenatal Exposure Delayed Effects, Mental Recall, Schizophrenia, Reflex, Startle, Virus Diseases, Neuroimmunomodulation, Cytokines, Mice

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