Cited by 62Tryptophan and brain disordersSchizophrenia research and treatmentStress Responses and Cortisol

Prenatal immune challenge in rats: altered responses to dopaminergic and glutamatergic agents, prepulse inhibition of acoustic startle, and reduced route-based learning as a function of maternal body weight gain after prenatal exposure to poly IC

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Vorhees, Charles V., Graham, Devon L., Braun, Amanda A., Schaefer, Tori L., Skelton, Matthew R., Richtand, Neil M., Williams, Michael T.·2012·Synapse

Abstract

Prenatal maternal immune activation has been used to test the neurodevelopmental hypothesis of schizophrenia. Most of the data are in mouse models; far less is available for rats. We previously showed that maternal weight change in response to the immune activator polyinosinic-polycytidylic acid (Poly IC) in rats differentially affects offspring. Therefore, we treated gravid Harlan Sprague-Dawley rats i.p. on embryonic day 14 with 8 mg/kg of Poly IC or Saline. The Poly IC group was divided into those that lost or gained the least weight, Poly IC (L), versus those that gained the most weight, Poly IC (H), following treatment. The study design controlled for litter size, litter sampling, sex distribution, and test experience. We found no effects of Poly IC on elevated zero maze, open-field activity, object burying, light-dark test, straight channel swimming, Morris water maze spatial acquisition, reversal, or shift navigation or spatial working or reference memory, or conditioned contextual or cued fear or latent inhibition. The Poly IC (H) group showed a significant decrease in the rate of route-based learning when visible cues were unavailable in the Cincinnati water maze and reduced prepulse inhibition of acoustic startle in females, but not males. The Poly IC (L) group exhibited altered responses to acute pharmacological challenges: exaggerated hyperactivity in response to (+)-amphetamine and an attenuated hyperactivity in response to MK-801. This model did not exhibit the cognitive, or latent inhibition deficits reported in Poly IC-treated rats but showed changes in response to drugs acting on neurotransmitter systems implicated in the pathophysiology of schizophrenia (dopaminergic hyperfunction and glutamatergic hypofunction).

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  1. Bronson SL Richtand NM 2011 Developmental consequences of prenatal maternal immune activation Handbook of Schizophrenia Spectrum Disorders I 1 25 New York Springer Science-Business Media B.V

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Authors
Vorhees, C. V., Graham, D. L., Braun, A. A., Schaefer, T. L., Skelton, M. R., Richtand, N. M., & Williams, M. T.
Affiliations
  • Cincinnati Children's Hospital Medical Center (US)
  • Vanderbilt University (US)
  • Cincinnati VA Medical Center (US)
Corresponding author
Vorhees, Charles V.
Venue
Synapse
Publisher
Wiley
Published
2012-05-15
Volume
66
Issue
8
Pages
725-737
ISSN
  • 0887-4476 (ISSN-L)
  • 1098-2396
OpenAlex
W2028114232
Cited by
62
References
73
Citations by year
2025: 1 · 2024: 2 · 2023: 3 · 2022: 4 · 2021: 6 · 2020: 5 · 2019: 4 · 2018: 8 · 2017: 3 · 2016: 5 · 2015: 7 · 2014: 6 · 2013: 6 · 2012: 2
FWCI
2.07
Type
journal article
Language
en
Open access
Locations
  • Synapse (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (MH083192-01, R21MH083192)
  • National Institute on Drug Abuse (R01DA021394, DA021394)
  • National Institute of Environmental Health Sciences (R01ES015689, ES015689, T32ES007051)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
maternal immune activation, prenatal immune challenge, polyinosinic-polycytidylic acid, maternal body weight gain, MK-801, spatial memory, fear conditioning, latent inhibition, sex differences
MeSH terms
Amphetamine, Animals, Female, Learning, Male, Motor Activity, Neuropsychological Tests, Poly I-C, Pregnancy, Prenatal Exposure Delayed Effects, Reflex, Startle, Dopamine Agents, Weight Gain, Dizocilpine Maleate, Rats, Sprague-Dawley, Excitatory Amino Acid Antagonists, Maze Learning, Maternal Exposure, Rats

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