Cited by 41Neurological disorders and treatmentsParkinson's Disease Mechanisms and TreatmentsNeurotransmitter Receptor Influence on Behavior

Changes in brain functional activation during resting and locomotor states after unilateral nigrostriatal damage in rats

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Yang, J., Sadler, T.R., Givrad, T.K., Maarek, J.-M.I., Holschneider, D.P.·2007·NeuroImage

Abstract

To evaluate functional neuronal compensation after partial damage to the nigrostriatal system, we lesioned rats unilaterally in the striatum with 6-hydroxydopamine. Five weeks later, cerebral perfusion was mapped at rest or during treadmill walking using [(14)C]-iodoantipyrine. Regional CBF-related tissue radioactivity (CBF-TR) was quantified by autoradiography and analyzed by statistical parametric mapping and region-of- interest analysis. Lesions were confirmed by tyrosine hydroxylase immunohistochemistry and changes in rotational locomotor activity. Functional compensations were bilateral and differed at rest and during treadmill walking. Consistent with the classic view of striatopallidal connections, CBF-TR of lesioned compared to sham-lesioned rats increased in the ipsilateral subthalamic nucleus (STN) and internal globus pallidus, and decreased in the striatum and external globus pallidus. Contrary to the classic view, CBF-TR increased in the ipsilateral ventral lateral, ventral anterior thalamus and motor cortex, as well as in the central medial thalamus, midline cerebellum, and contralateral STN. During walking, perfusion decreased in lesioned compared to sham-lesioned rats across the ipsilateral striato-pallidal-thalamic-cortical motor circuit. Compensatory increases were seen bilaterally in the ventromedial thalamus and red nucleus, in the contralateral STN, anterior substantia nigra, subiculum, motor cortex, and in midline cerebellum. Enhanced recruitment of associative sensory areas was noted cortically and subcortically. Future models of compensatory changes after nigrostriatal damage need to address the effects of increased neural activity by residual dopaminergic neurons, interhemispheric interactions and differences between resting and locomotor states. Identification of sites at which functional compensation occurs may define useful future targets for neurorehabilitative or neurorestorative interventions in Parkinson's disease.

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Crossref · 10.1016/j.neuroimage.2007.03.010

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Authors
Yang, J., Sadler, T. R., Givrad, T. K., Maarek, J.-M. I., & Holschneider, D. P.
Affiliations
University of Southern California (US)
Corresponding author
Holschneider, D.P.
Venue
NeuroImage
Publisher
Elsevier BV
Published
2007-07
Volume
36
Issue
3
Pages
755-773
ISSN
1053-8119 (ISSN-L)
OpenAlex
W1967838925
Cited by
41
References
109
Citations by year
2025: 1 · 2024: 2 · 2022: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2016: 2 · 2015: 3 · 2014: 2 · 2013: 10 · 2012: 3
FWCI
2.54
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01NS050171)
Topics
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
6-hydroxydopamine lesion, functional compensation, cerebral blood flow, resting state, treadmill locomotion, subthalamic nucleus, globus pallidus, thalamus, motor cortex, cerebellum, red nucleus, Parkinson's disease, neurorehabilitation, neurorestoration
MeSH terms
Amphetamine, Central Nervous System Stimulants, Animals, Autoradiography, Brain, Brain Damage, Chronic, Brain Mapping, Cerebellum, Globus Pallidus, Image Processing, Computer-Assisted, Functional Laterality, Locomotion, Male, Models, Neurological, Rest, Tyrosine 3-Monooxygenase, Walking, Oxidopamine, Neostriatum, Rats, Sprague-Dawley, Subthalamic Nucleus, Rats

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