Differential long term effects of early diisopropylfluorophosphate exposure in Balb/C and C57Bl/J6 mice

Tamar Lin, Or Duek, Amir Dori, Ora Kofman

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The long-term effect of postnatal administration of a sub-toxic dose of the irreversible acetylcholinesterase inhibitor diisopropylfluorophosphate (DFP) on depression and anxiety behavior was compared in two strains of inbred mice. C57BL/6J and Balb/C mice were injected for 7 consecutive days with either 1. mg/kg DFP or saline on postnatal days 14-20. Mice were tested at age 3-4 months for initial and learned anxiety using double-exposure elevated plus maze and to a novel enclosed environment. Depression was assayed using the sweet preference model of anhedonia and the forced swim test for despair. Postnatal DFP pretreatment led to less activity and more immobility in the elevated plus maze in both mouse strains in the first session. The effect was attenuated in the second session in the C57BL/6J strain but not the Balb/C strain. DFP did not affect the sweet preference or forced swim tests, suggesting a dissociation between the long-term effects of DFP on immobility in the context of approach-avoidance conflict (elevated plus maze) versus despair (forced swim).

Original languageEnglish
Pages (from-to)113-120
Number of pages8
JournalInternational Journal of Developmental Neuroscience
Volume30
Issue number2
DOIs
StatePublished - 1 Apr 2012

Keywords

  • Anhedonia
  • Anxiety
  • Depression
  • Diisopropylfluorophosphate
  • Elevate plus maze
  • Forced swim
  • Locomotion
  • Mouse strains
  • Pesticides

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