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Cerebellar changes in 50 cases of Creutzfeldt-Jakob disease with emphasis on granule cell atrophy variant
Insights
Creutzfeldt-Jakob disease often involves cerebellar changes, particularly granule cell atrophy in a distinct variant. This variant, lacking kuru plaques, presents with earlier death and unique pathological findings.
Area of Science:
- Neuropathology
- Neurodegenerative Diseases
Background:
- Creutzfeldt-Jakob disease (CJD) is a fatal prion disease.
- Cerebellar involvement is common in CJD, but its correlation with clinical signs requires further investigation.
Purpose of the Study:
- To investigate the neuropathological changes in the cerebellum in Creutzfeldt-Jakob disease.
- To determine the correlation between clinical cerebellar symptoms and pathological findings.
- To characterize a specific variant of cerebellar changes in CJD.
Main Methods:
- Histopathological examination of cerebellar tissue from 50 CJD cases.
- Correlation analysis between clinical records and neuropathological findings.
Main Results:
- Cerebellar changes were observed in 41/50 CJD cases, severe in 9.
- Dentate nucleus involvement showed a correlation with clinical cerebellar symptoms.
- A distinct variant characterized by predominant granule cell atrophy (without kuru plaques) was identified in 5 cases.
- This variant had a significantly lower mean age of death (56.0 years) compared to other cerebellar changes (64.4 years).
Conclusions:
- Cerebellar changes are a frequent finding in Creutzfeldt-Jakob disease.
- Granule cell atrophy, without kuru plaques, represents a distinct CJD variant associated with earlier mortality and specific pathological features.
Abstract:
Cerebellar changes have been found in 41/50 cases of Creutzfeldt-Jakob disease. They were severe in 9 cases. We did not find significant correlation between the cerebellar symptoms and signs pointed out in clinical records and prominent cerebellar changes. The only exception consisted in dentate nucleus involvement which was more frequently related to those symptoms and signs. 5 of the cases with severe changes were characterized by predominant granule cell atrophy without kuru plaques. The mean age of death (56.0) was significantly lower in this variant than that of patients with other cerebellar changes (64.4) (p less than 0.01). The granule cell atrophy seems a distinct variant on the basis of age of death and pathological changes. However, it is not characterized by the presence of kuru plaques.