Cited by 169Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchNeural and Behavioral Psychology Studies

Rapid sampling of extracellular dopamine in the rat prefrontal cortex during food consumption, handling and exposure to novelty

Feenstra, Matthijs G.P, Botterblom, Margriet H.A·1996·Brain Research

Abstract

We report the effects of physiological stimuli on extracellular dopamine (DA) in the medial prefrontal cortex (PFC) of the rat determined on-line in dialysates obtained every 5.5 min. The detection limit for DA was 0.03-0.1 pg/5 microl injection using a conventional HPLC set-up. Basal levels in PFC were at the detection limit, therefore 3 microM nomifensine was included in the Ringer perfusion fluid, producing readily detectable DA levels of 0.9 pg/injection. Perfusion with 3 microM TTX for 30 min decreased DA within 11 min to 10% of control. The routine use of rapid sampling of extracellular DA was applied to study cortical DA release in relation to behaviour. Exposure to a novel environment for 5.5 min led to an increase to 135%. Presentation of a food pellet to food-deprived rats resulted in a rapid increase to 150% within 5.5 min, which lasted 30-40 min, which is 10-20 min more than the time spent eating. Handling the rat for 5.5 min increased DA in PFC within 5.5 min to 160% and in 11 min to 190% of control followed by a 25-min period of a 50% increase, probably reflecting increased arousal. The results suggest that emotional arousal is a common denominator of increased cortical DA release and that responses are graded depending on the intensity of the stimulus.

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Crossref · 10.1016/s0006-8993(96)00945-6

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36 of 36 references verified0 citation errors · 0 not checkable

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  • The delivery of a single food pellet to a hungry rat elevates dopamine levels in prefrontal cortex for approximately 30 minutes.

    “For example, the delivery of a single food pellet to a hungry rat elevates dopamine levels in prefrontal cortex for approximately 30 minutes [75].”

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Authors
Feenstra, M. G. P., & Botterblom, M. H. A.
Corresponding author
Feenstra, Matthijs G.P
Venue
Brain Research
Publisher
Elsevier BV
Published
1996-12
Volume
742
Issue
1-2
Pages
17-24
ISSN
0006-8993 (ISSN-L)
OpenAlex
W1981768163
Cited by
169
References
36
Citations by year
2026: 2 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 1 · 2019: 3 · 2018: 6 · 2016: 7 · 2015: 4 · 2014: 8 · 2013: 4 · 2012: 10
FWCI
2.06
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
extracellular dopamine, medial prefrontal cortex, high-speed sampling, dopamine release, novelty exposure, dietary intake, food deprivation, handling, emotional arousal, tetrodotoxin, nomifensine
MeSH terms
Animals, Arousal, Dopamine, Eating, Male, Rats, Wistar, Prefrontal Cortex, Microdialysis, Rats

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