Cited by 97Neurotransmitter Receptor Influence on BehaviorAttention Deficit Hyperactivity DisorderNeuroscience and Neuropharmacology Research

Locomotor hyperactivity induced by blockade of prefrontal cortical α2-adrenoceptors in monkeys

Ma, Chao-Lin, Arnsten, Amy F.T., Li, Bao-Ming·2005·Biological Psychiatry

Abstract

Background Stimulation of alpha(2)-adrenergic receptors (alpha(2)-ARs) in the prefrontal cortex (PFC) has a beneficial effect on working memory and attentional regulation in monkeys. alpha(2)-adrenergic agonists like clonidine and guanfacine have been used experimentally and clinically for the treatment of attention deficit and hyperactivity disorder (ADHD). However, it is unknown if alpha(2)-ARs in the PFC are involved in the neural mechanisms underlying regulation of locomotor activity. Methods The alpha(2)-adrenergic antagonist yohimbine was infused bilaterally and chronically into the dorsolateral PFC (dlPFC) in two monkeys, using mini-osmotic pumps. Spontaneous locomotor activity was measured continuously before, during and after drug administration, using an activity monitor. Results The monkeys exhibited a dramatic increase in motoric activity during infusion of yohimbine into the dlPFC. Similar treatment with saline was without effect. Thus, the locomotor hyperactivity was due to blockade of alpha(2)-ARs, not because of nonspecific factors such as cortical damage by drug administration. Conclusions The present study suggests that alpha(2)-ARs in the dlPFC are involved in inhibitory control of locomotor activity.

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Crossref · 10.1016/j.biopsych.2004.11.004

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  • Blockade of α2 receptors selectively within the monkey PFC can recreate many of the key symptoms of ADHD.

    “Importantly, blockade of α2 receptors selectively within the monkey PFC can recreate many of the key symptoms of ADHD.”

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Authors
Ma, C.-L., Arnsten, A. F. T., & Li, B.-M.
Affiliations
  • Yale University (US)
  • Fudan University (CN)
Corresponding author
Li, Bao-Ming
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2005-01
Volume
57
Issue
2
Pages
192-195
ISSN
0006-3223 (ISSN-L)
OpenAlex
W1967694983
Cited by
96
References
28
Citations by year
2025: 2 · 2024: 1 · 2023: 2 · 2022: 5 · 2021: 4 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 6 · 2016: 4 · 2015: 7 · 2014: 4 · 2013: 4 · 2012: 4
FWCI
3.27
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
alpha2-adrenoceptors, prefrontal cortex, dorsolateral prefrontal cortex, yohimbine, locomotor hyperactivity, locomotor inhibition, attention deficit hyperactivity disorder, clonidine, guanfacine, spontaneous motor activity, non-human primates
MeSH terms
Adrenergic alpha-Antagonists, Animals, Drug Administration Schedule, Female, Hyperkinesis, Macaca mulatta, Microinjections, Motor Activity, Yohimbine, Prefrontal Cortex, Receptors, Adrenergic, alpha-2, Adrenergic alpha-2 Receptor Antagonists

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