Cited by 271Neurotransmitter Receptor Influence on BehaviorSchizophrenia research and treatmentNeuroscience and Neuropharmacology Research

Prepulse Inhibition Deficits and Perseverative Motor Patterns in Dopamine Transporter Knock-Out Mice: Differential Effects of D1 and D2 Receptor Antagonists

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Ralph, Rebecca J., Paulus, Martin P., Fumagalli, Fabio, Caron, Marc G., Geyer, Mark A.·2001·The Journal of Neuroscience

Abstract

Dopamine is known to regulate several behavioral phenomena, including sensorimotor gating and aspects of motor activity. The roles of dopamine D1 and D2 receptors in these behaviors have been documented in the rat literature, but few reports exist on their role in mice. We used dopamine transporter (DAT) (−/−) mice to examine the behavioral consequences of a chronically hyperdopaminergic state, challenging them with the preferential dopamine D2 receptor antagonist raclopride and D1 receptor antagonist SCH23390. At baseline, DAT (−/−) mice exhibited deficient sensorimotor gating as measured by prepulse inhibition (PPI) of the startle response, exhibited nonfocal perseverative patterns of locomotion, and were hyperactive in a novel environment. Pretreatment with raclopride significantly increased PPI in the DAT (−/−) mice, whereas SCH23390 had no significant effect. Blockade of D2 receptors did not affect the predominantly straight patterns of motor behavior produced by the DAT (−/−) mice, but antagonism of D1 receptors significantly attenuated the perseverative patterns, producing more of a meandering behavior seen in the DAT (+/+) control mice. Both D1 and D2 receptor antagonists decreased the hyperactivity seen in the DAT (−/−) mice. These findings support the role of the D2, but not the D1, receptor in the modulation of PPI in mice. Furthermore, D1 receptor activation appears to be the critical substrate for the expression of perseverative patterns of motor behavior, whereas both D1 and D2 receptors appear to regulate the amount of motor activity.

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Authors
Ralph, R. J., Paulus, M. P., Fumagalli, F., Caron, M. G., & Geyer, M. A.
Affiliations
  • University of California San Diego (US)
  • University of Milan (IT)
  • Howard Hughes Medical Institute (US)
Venue
The Journal of Neuroscience
Published
2001-01-01
Volume
21
Issue
1
Pages
305-313
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2133067994
Cited by
271
References
31
Citations by year
2026: 4 · 2025: 5 · 2024: 4 · 2023: 12 · 2022: 9 · 2021: 4 · 2020: 7 · 2019: 7 · 2018: 6 · 2017: 8 · 2016: 13 · 2015: 12 · 2014: 15 · 2013: 12 · 2012: 11
FWCI
5.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • U.S. Department of Veterans Affairs
  • National Institutes of Health (5r01da011277-03)
  • National Institute of Mental Health (F31-MH-12806, MH42228, R37MH042228, R01MH042228, R01MH061326)
  • National Institute on Drug Abuse (DA 02925, R01DA002925, DA11277)
  • NIH Clinical Center
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
prepulse inhibition, sensorimotor gating, dopamine transporter knockout mice, dopamine D1 receptor, dopamine D2 receptor, dopamine D1 receptor antagonist, dopamine D2 receptor antagonists, raclopride, SCH 23390, locomotor hyperactivity, hyperdopaminergic state
MeSH terms
Animals, Behavior, Animal, Benzazepines, Carrier Proteins, Female, Heterozygote, Homozygote, Hyperkinesis, Injections, Intraperitoneal, Injections, Subcutaneous, Male, Membrane Glycoproteins, Motor Activity, Movement Disorders, Nerve Tissue Proteins, Neural Inhibition, Sex Factors, Reflex, Startle, Receptors, Dopamine D1, Receptors, Dopamine D2, Mice, Knockout, Dopamine Antagonists, Raclopride, Membrane Transport Proteins, Dopamine Plasma Membrane Transport Proteins, Mice, Dopamine D2 Receptor Antagonists

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