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[Widespread argentophilic structures in progressive supranuclear palsy--an autopsy case report]
T Hanihara1, H Kubota, N Amano
1Division of Psychiatry, Kanagawa Rehabilitation Center, Japan.
No to Shinkei = Brain and Nerve
|May 1, 1994
Summary
This autopsy study details a progressive supranuclear palsy (PSP) case, revealing widespread tau protein pathology beyond typical brain regions. Findings suggest a broader distribution of tau-related lesions in PSP than previously understood.
Area of Science:
- Neuropathology
- Neurodegenerative Diseases
Background:
- Progressive supranuclear palsy (PSP) is a rare, fatal neurodegenerative disease.
- Characterized by parkinsonism, ophthalmoplegia, and cognitive decline.
- Autopsy confirmation is crucial for definitive diagnosis.
Observation:
- A 67-year-old male presented with gait disturbance and mental deterioration.
- Clinical diagnosis of PSP was made at age 71, showing pseudobulbar palsy and ophthalmoplegia.
- Imaging revealed frontal lobe atrophy.
Findings:
- Autopsy confirmed typical PSP neuropathology: neuronal loss, neurofibrillary tangles, and gliosis in subcortical nuclei.
- Extensive argentophilic structures, indicative of abnormal tau protein, were found in the cerebral and cerebellar white matter, and cerebral cortex.
- Immunohistochemistry confirmed tau protein positivity in these widespread lesions.
Implications:
- The study highlights that tau pathology in PSP may extend beyond subcortical nuclei to cortical and white matter regions.
- This suggests a more complex and widespread disease process than previously recognized.
- Understanding the full distribution of tau pathology could refine diagnostic criteria and therapeutic strategies for PSP.