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Parkinson Disease ll: Pathophysiology

Parkinson Disease ll: Pathophysiology

Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...

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Related Experiment Video

Updated: May 14, 2026

Behavioral Assessments of Spontaneous Locomotion in a Murine MPTP-induced Parkinson's Disease Model

Behavioral Assessments of Spontaneous Locomotion in a Murine MPTP-induced Parkinson's Disease Model

Published on: January 7, 2019

Motor behavior correlates with striatal [¹⁸F]-DOPA uptake in MPTP-lesioned primates.

R Kortekaas¹, S A Eshuis, G Andringa

¹Department of Neuroscience, University Medical Center Groningen, University of Groningen, The Netherlands.

Neurochemistry International

|January 30, 2013

Summary

The MPTP-lesioned monkey model of Parkinson's disease shows motor deficits correlating with reduced dopaminergic function, as measured by [(18)F]-F-DOPA PET scans. This study confirms the utility of these methods for monitoring disease progression in non-human primates.

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Last Updated: May 14, 2026

Behavioral Assessments of Spontaneous Locomotion in a Murine MPTP-induced Parkinson's Disease Model

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Published on: January 7, 2019

Murine Model for Parkinson's Disease: from 6-OH Dopamine Lesion to Behavioral Test

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Published on: January 15, 2010

Development of a Unilaterally-lesioned 6-OHDA Mouse Model of Parkinson's Disease

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Published on: February 14, 2012

Area of Science:

Neuroscience
Primate Models
Parkinson's Disease Research

Background:

The MPTP-lesioned monkey is a key animal model for Parkinson's disease (PD).
While motor dysfunction and dopaminergic cell loss are known, formal statistical analysis linking these in longitudinal studies is lacking.
Assessing dopaminergic function via [(18)F]-F-DOPA Positron Emission Tomography (PET) and correlating it with objective motor behavior requires further investigation.

Purpose of the Study:

To statistically analyze the correlation between dopaminergic function and motor behavior in MPTP-lesioned rhesus monkeys over time.
To validate the use of [(18)F]-F-DOPA PET and objective motor scoring as sensitive measures for tracking dopaminergic degeneration.

Main Methods:

Eight rhesus monkeys received bilateral MPTP infusions via carotid arteries.
Motor behavior and [(18)F]-F-DOPA uptake were assessed at baseline, unilateral, and bilateral lesion stages.
Statistical correlations were performed between radiotracer uptake in the striatum and motor impairment scores.

Main Results:

MPTP administration induced parkinsonian motor signs and decreased striatal [(18)F]-F-DOPA uptake.
Significant inverse correlations were observed between dopaminergic function (radiotracer uptake) and motor impairment severity.
Both behavioral assessments and [(18)F]-F-DOPA PET scans demonstrated sensitivity to changes within subjects.

Conclusions:

Striatal [(18)F]-F-DOPA uptake is a reliable indicator that inversely correlates with motor deficits in MPTP-treated non-human primates.
Behavioral scoring and [(18)F]-F-DOPA PET are valuable, sensitive tools for monitoring dopaminergic degeneration longitudinally in this Parkinson's disease model.