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Related Experiment Videos

Imaging and affective disorder in the elderly.

B Beats1, R Levy

  • 1Institute of Psychiatry, London, England.

Clinics in Geriatric Medicine
|May 1, 1992
PubMed
Summary

Elderly patients with affective disorder show brain structure changes, including enlarged ventricles and atrophy, linked to vascular disease. These findings differ from Alzheimer's disease and are not progressive.

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Area of Science:

  • Neuroscience
  • Gerontology
  • Psychiatry

Background:

  • Elderly individuals with affective disorders exhibit notable brain structural alterations.
  • Enlarged ventricles correlate with cognitive decline and increased mortality in this population.
  • Cortical atrophy, subcortical white matter changes, and basal ganglia lesions are more prevalent than in controls.

Purpose of the Study:

  • To review and synthesize current findings on brain structural and functional changes in elderly patients with affective disorder.
  • To compare these changes with those observed in younger patients and in degenerative dementias.
  • To explore the association with vascular disease and functional imaging correlates.

Main Methods:

  • Review of existing literature on neuroimaging studies in elderly affective disorder patients.
  • Comparison of structural abnormalities (ventricle size, atrophy, lesions) with age-matched controls and Alzheimer's disease.
  • Analysis of functional imaging data (cerebral blood flow, metabolism) and their relation to affective states.

Main Results:

  • Brain structural abnormalities are present but less severe than in Alzheimer's disease and do not appear progressive.
  • A strong association exists between affective disorder in the elderly and cerebrovascular disease.
  • Functional imaging suggests state-dependent frontostriatal dysfunction in depression, with altered cerebral blood flow and metabolism.

Conclusions:

  • Affective disorder in the elderly is associated with specific brain structural changes, distinct from neurodegenerative diseases.
  • Vascular factors play a significant role, though further neuropathological studies are needed.
  • Future research requires larger, homogeneous groups to differentiate findings from other neurological and psychiatric conditions.

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