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Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia
Published on: September 12, 2020
Functional imaging in hereditary dystonia
M Carbon1, M Argyelan, D Eidelberg
1Center for Neurosciences, The Feinstein Institute for Medical Research, North Shore - Long Island Jewish Health System, Manhasset, NY 11030, USA. mcarbon@nshs.edu
Hereditary dystonias involve abnormalities in brain circuits, particularly the cortico-striatal-pallido-thalamocortical (CSPTC) and cerebellar pathways. Cerebellar microstructural changes may be the primary cause, impacting sensorimotor function.
Area of Science:
- Neuroscience
- Genetics
- Neurology
Background:
- Sporadic focal dystonias exhibit impaired cortical inhibition and maladaptive plasticity.
- Research is exploring if these mechanisms apply to generalized dystonias and if they are state or trait characteristics.
Purpose of the Study:
- To investigate functional and microstructural brain abnormalities in hereditary dystonias (DYT1 and DYT6 genotypes).
- To determine the relationship between these abnormalities and disease characteristics.
Main Methods:
- Utilized a multitracer positron emission tomography (PET) approach.
- Employed diffusion tensor MRI (DTI) to study brain structure.
- Examined individuals with DYT1 and DYT6 genotypes.
Main Results:
- Identified abnormalities in cortico-striatal-pallido-thalamocortical (CSPTC) and cerebellar-thalamo-cortical circuits.
- Found genotype-specific abnormalities in the basal ganglia, SMA, and cerebellum.
- Observed that microstructural changes in cerebellar pathways correlated with disease penetrance, suggesting a primary role.
Conclusions:
- Primary torsion dystonia is understood as a neurodevelopmental circuit disorder.
- Involves CSPTC and related cerebellar pathways.
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