Selective deficits in attentional set-shifting in mice induced by maternal immune activation with poly(I:C)

Behav Brain Res. 2022 Feb 15:419:113678. doi: 10.1016/j.bbr.2021.113678. Epub 2021 Nov 25.

Abstract

Maternal immune activation has been identified as a significant risk factor for schizophrenia. Using rodent models, past work has demonstrated various behavioral and brain impairments in offspring after immune-activating events. We applied 5 mg/kg of poly(I:C) on gestation day 9 to pregnant mouse dams, whose offspring were then stressed during puberty. We show impairments in attentional set-shifting in a T-maze, and a decreased number of parvalbumin-positive interneurons in the hippocampus as a result of peripubertal stress specifically in females.

Keywords: Behavioral tests; Cognitive deficit; Immunochallenge; Interneurons; Maternal immune activation; Mouse; Poly(I:C); Prenatal infection; Schizophrenia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Attention / physiology*
  • Behavior, Animal / physiology
  • Cognitive Dysfunction / etiology
  • Cognitive Dysfunction / pathology
  • Cognitive Dysfunction / physiopathology*
  • Disease Models, Animal
  • Executive Function / physiology*
  • Female
  • Hippocampus / cytology
  • Interneurons / cytology
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Poly I-C / administration & dosage
  • Pregnancy
  • Pregnancy Complications, Infectious* / chemically induced
  • Pregnancy Complications, Infectious* / immunology
  • Prenatal Exposure Delayed Effects / chemically induced
  • Prenatal Exposure Delayed Effects / pathology
  • Prenatal Exposure Delayed Effects / physiopathology*
  • Schizophrenia / etiology
  • Schizophrenia / immunology
  • Schizophrenia / pathology
  • Schizophrenia / physiopathology*
  • Stress, Psychological / complications
  • Stress, Psychological / pathology
  • Stress, Psychological / physiopathology*

Substances

  • Poly I-C