Cognitive effects of dopaminergic and glutamatergic blockade in nucleus accumbens in pigeons

Gargiulo, Pascual Ángel; Acerbo, Martin Javier; Krug, Ines; Delius, Juan

Cognitive effects of dopaminergic and glutamatergic blockade in nucleus accumbens in pigeons

Files

Delius Cognitive effects of dopaminergic 206193.pdf(4.23 MB)

Date

2005

Authors

Gargiulo, Pascual Ángel

Acerbo, Martin Javier

Krug, Ines

Delius, Juan

Publication type

Journal article

Published in

Pharmacology Biochemistry and Behavior ; 81 (2005), 4. - pp. 732-739. - ISSN 0091-3057. - eISSN 1873-5177

Abstract

In earlier studies it was found that glutamatergic transmission within the nucleus accumbens septi is involved in the performance of a learned visual shape discrimination in pigeons. This study examines what effects several kinds of glutamate and dopamine antagonists have on the same task. Pigeons were trained with the relevant discrimination, bilaterally implanted with cannulas into the nucleus accumbens and tested after various transmission blockers had been administered intracerebrally. SCH-23390, a D1 dopamine antagonist, at the dose used, had no effect, and Spiperone, a D2-dopamine and 5HT2a-serotonine antagonist, significantly decreased the error repeat trials. CNQX, a non-NMDA glutamate receptor antagonist, and Cycloleucine, an antagonist of the glycine allosteric site of NMDA receptors, had no effect. CGS-19755, a selective competitive NMDA antagonist, significantly impaired performance by significantly decreasing the percent correct trials and increasing the error repeat trials. CPPG, a II/III metabotropic glutamate antagonist, remarkably improved performance. MMPG, a III/II metabotropic glutamate antagonist, at the dose used, did not have any significant effect. The preparation employed may be a useful animal model of perceptual disturbances in schizophrenia.

Subject (DDC)

150 Psychology

Keywords

Pigeon,nucleus accumbens,perception,learned discrimination,glutamate antagonists,dopamine antagonists,schizophrenia

Cite This

ISO 690

GARGIULO, Pascual Ángel, Martin Javier ACERBO, Ines KRUG, Juan DELIUS, 2005. Cognitive effects of dopaminergic and glutamatergic blockade in nucleus accumbens in pigeons. In: Pharmacology Biochemistry and Behavior. 81(4), pp. 732-739. ISSN 0091-3057. eISSN 1873-5177. Available under: doi: 10.1016/j.pbb.2005.05.009

BibTex

@article{Gargiulo2005-08Cogni-20619,
  year={2005},
  doi={10.1016/j.pbb.2005.05.009},
  title={Cognitive effects of dopaminergic and glutamatergic blockade in nucleus accumbens in pigeons},
  number={4},
  volume={81},
  issn={0091-3057},
  journal={Pharmacology Biochemistry and Behavior},
  pages={732--739},
  author={Gargiulo, Pascual Ángel and Acerbo, Martin Javier and Krug, Ines and Delius, Juan}
}

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