Cited by 104Parkinson's Disease Mechanisms and TreatmentsMotor Control and AdaptationNeurotransmitter Receptor Influence on Behavior

Dopamine-dependent motor learning: insight into levodopa's long-duration response

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Beeler, Jeff A., Cao, Zhen Fang Huang, Kheirbek, Mazen A., Ding, Yunmin, Koranda, Jessica, Murakami, Mari, Kang, Un Jung, Zhuang, Xiaoxi·2010·Annals of Neurology

Abstract

OBJECTIVE: Dopamine (DA) is critical for motor performance, motor learning, and corticostriatal plasticity. The relationship between motor performance and learning, and the role of DA in the mediation of them, however, remain unclear. METHODS: To examine this question, we took advantage of PITx3-deficient mice (aphakia mice), in which DA in the dorsal striatum is reduced by 90%. PITx3-deficient mice do not display obvious motor deficits in their home cage, but are impaired in motor tasks that require new motor skills. We used the accelerating rotarod as a motor learning task. RESULTS: We show that the deficiency in motor skill learning in PITx3(-/-) is dramatic and can be rescued with levodopa treatment. In addition, cessation of levodopa treatment after acquisition of the motor skill does not result in an immediate drop in performance. Instead, there is a gradual decline of performance that lasts for a few days, which is not related to levodopa pharmacokinetics. We show that this gradual decline is dependent on the retesting experience. INTERPRETATION: This observation resembles the long-duration response to levodopa therapy in its slow buildup of improvement after the initiation of therapy and gradual degradation. We hypothesize that motor learning may play a significant, underappreciated role in the symptomatology of Parkinson disease as well as in the therapeutic effects of levodopa. We suggest that the important, yet enigmatic long-duration response to chronic levodopa treatment is a manifestation of rescued motor learning.

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  • Eight weeks of treadmill exercise in early Parkinson's disease was accompanied by an increase in DA-D2R binding potential within the dorsal striatum.

    “Fisher and colleagues reported that 8 weeks of treadmill exercise was accompanied by an increase in DA-D2R binding potential within the dorsal striatum of individuals with early stage PD 48.”

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Authors
Beeler, J. A., Cao, Z. F. H., Kheirbek, M. A., Ding, Y., Koranda, J., Murakami, M., Kang, U. J., & Zhuang, X.
Affiliations
University of Chicago (US)
Corresponding author
Beeler, Jeff A.
Venue
Annals of Neurology
Publisher
Wiley
Published
2010-04-26
Volume
67
Issue
5
Pages
639-647
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W2026632475
Cited by
104
References
40
Citations by year
2026: 5 · 2025: 7 · 2024: 9 · 2023: 5 · 2022: 6 · 2021: 4 · 2020: 4 · 2019: 4 · 2018: 5 · 2017: 6 · 2016: 7 · 2015: 3 · 2014: 7 · 2013: 11 · 2012: 9
FWCI
4.47
Type
journal article
Language
en
Open access
Locations
  • Annals of Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Parkinson Disease Association
  • National Institutes of Health
  • National Institute on Drug Abuse (DA025875, R01DA025875)
  • National Institute of Neurological Disorders and Stroke (NS064865, R01NS064865)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
dopamine, motor learning, levodopa, Pitx3, dorsal striatum, Parkinson's disease, motor skill learning
MeSH terms
Animals, Behavior, Animal, Benzazepines, Dopamine, Learning, Levodopa, Motor Skills, Movement Disorders, Reaction Time, Time Factors, Transcription Factors, Dopamine Agents, Mice, Knockout, Homeodomain Proteins, Rotarod Performance Test, Mice

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