[Cortisol suppression after dexamethasone administration in patients with dementia]
L'Encephale
|May 1, 1986
Summary
Demented patients with vascular dementia are more likely to show abnormal results on the dexamethasone suppression test (DST). DST results were also less consistent week-to-week in vascular dementia compared to Alzheimer's disease.
Area of Science:
- Gerontology
- Neurology
- Psychiatry
Context:
- Senile dementia affects cognitive function in the elderly.
- Distinguishing between Alzheimer's disease and vascular dementia is clinically important.
- The dexamethasone suppression test (DST) is a neuroendocrine marker.
Purpose:
- To investigate the utility of the dexamethasone suppression test (DST) in differentiating between Alzheimer's disease and vascular dementia.
- To assess the reproducibility of DST results in different dementia subtypes.
Summary:
- Sixty-four non-depressed dementia inpatients underwent two DSTs.
- Patients were categorized into Alzheimer's disease and multi-infarct dementia using established criteria.
- Vascular dementia patients exhibited significantly higher rates of DST nonsuppression and lower test-retest reproducibility compared to Alzheimer's patients.
Impact:
- DST nonsuppression may serve as a potential biomarker for vascular dementia.
- Findings suggest differential neuroendocrine dysregulation in Alzheimer's versus vascular dementia.
- This research aids in the differential diagnosis of dementia subtypes.
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