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Related Experiment Videos

Structural brain changes in Parkinson disease with dementia: a voxel-based morphometry study.

Christopher Summerfield1, Carme Junqué, Eduardo Tolosa

  • 1Department de Psiquiatria i Psicobiologia, Universitat de Barcelona, Spain.

Archives of Neurology
|February 16, 2005
PubMed
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Parkinson disease with dementia (PDD) is linked to significant gray matter loss in brain regions including the hippocampus, thalamus, and anterior cingulate. These findings highlight key areas affected by PDD.

Area of Science:

  • Neuroimaging
  • Neurology
  • Neuroscience

Background:

  • Parkinson disease with dementia (PDD) involves neuropathological changes in cortical and subcortical brain areas.
  • Voxel-based morphometry (VBM) of MRI aids in identifying brain regions affected by PDD.

Purpose of the Study:

  • To pinpoint structural brain regions most associated with PDD.
  • To differentiate brain structural changes in PDD from Parkinson disease (PD) without dementia.

Main Methods:

  • Utilized magnetic resonance imaging (MRI) from 16 PDD patients, 13 PD patients without dementia, and 13 healthy controls.
  • Employed optimized voxel-based morphometric analyses to compare gray matter volumes.

Main Results:

  • PDD patients exhibited gray matter volume reductions in the bilateral putamen, accumbens nuclei, left thalamus, bilateral hippocampus, parahippocampal region, and anterior cingulate gyrus compared to controls.

Related Experiment Videos

  • PD patients without dementia showed gray matter reductions in the right hippocampus, left anterior cingulate gyrus, and left superior temporal gyrus compared to controls.

    • Conclusions:

    • The hippocampus, thalamus, and anterior cingulate gyrus are the most impacted regions in PDD.
    • Findings support neuropathological evidence implicating limbic and cortical areas in Parkinson disease.