Cited by 26Parkinson's Disease Mechanisms and TreatmentsNeurological disorders and treatmentsNeurotransmitter Receptor Influence on Behavior

Dysfunction of serotonergic neurons in Parkinson’s disease and dyskinesia

Vegas-Suarez, Sergio, Paredes-Rodriguez, Elena, Aristieta, Asier, Lafuente, Jose V., Miguelez, Cristina, Ugedo, Luisa·2019·International Review of Neurobiology

Abstract

Parkinson's disease (PD) is characterized by the degeneration of dopaminergic neurons in the substantia nigra, the depletion of striatal dopamine and the presence of Lewy aggregates containing alpha-synuclein. Clinically, there are motor impairments involving cardinal movement symptoms, bradykinesia, resting tremor, muscle rigidity, and postural abnormalities, along with non-motor symptoms such as sleep, behavior and mood disorders. The current treatment for PD focuses on restoring dopaminergic neurotransmission by l-3,4-dihydroxyphenylalanine (levodopa), which loses therapeutic efficacy and induces disabling abnormal involuntary movements known as levodopa-induced dyskinesia (LID) after several years. Evidence indicates that the pathophysiology of both PD and LID disorders is also associated with the dysfunctional activity of the serotonergic (5-HT) neurons that may be responsible for motor and non-motor disturbances. The main population of 5-HT neurons is located in the dorsal raphe nuclei (DRN), which provides extensive innervation to almost the entire neuroaxis and controls multiple functions in the brain. The degeneration of DRN 5-HT neurons occurs in early PD. These neurons can also take exogenous levodopa to transform it into dopamine, which may disturb neuron activity. This review will provide an overview of the underlying mechanisms responsible for 5-HT dysfunction and its clinical relevance in PD and dyskinesia.

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Crossref · 10.1016/bs.irn.2019.06.013

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Authors
Vegas-Suarez, S., Paredes-Rodriguez, E., Aristieta, A., Lafuente, J. V., Miguelez, C., & Ugedo, L.
Affiliations
  • University of the Basque Country (ES)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Ugedo, Luisa
Venue
International Review of Neurobiology
Publisher
Elsevier
Published
2019
Volume
146
Pages
259-279
ISSN
0074-7742 (ISSN-L)
OpenAlex
W2963147943
Cited by
26
References
101
Citations by year
2026: 3 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 3 · 2020: 4 · 2019: 1
FWCI
10.10
Type
book chapter
Language
en
Open access
closed
Locations
  • International review of neurobiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Agencia Estatal de Investigación
  • Eusko Jaurlaritza
  • Ministerio de Economía y Competitividad (SAF2016-77758-R)
  • Euskal Herriko Unibertsitatea
  • Universitat Politècnica de València
  • European Regional Development Fund (IT-901/16, T747-13)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
Parkinson's disease, levodopa-induced dyskinesia, serotonergic neurons, dorsal raphe nucleus, serotonin dysfunction, dopaminergic neuron loss, levodopa metabolism, non-motor symptoms, motor symptoms, Lewy bodies, alpha-synuclein
MeSH terms
Animals, Brain, Dyskinesia, Drug-Induced, Humans, Levodopa, Models, Neurological, Parkinson Disease, Serotonergic Neurons

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