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Familial frontotemporal dementia with ubiquitin inclusion bodies and without motor neuron disease

E Kövari1, G Leuba, A Savioz

  • 1Department of Psychiatry, University of Geneva School of Medicine, Switzerland. eniko.kovari@hcuge.ch

Acta Neuropathologica
|September 14, 2000
PubMed

Insights

This study identifies a novel familial form of frontotemporal dementia (FTD) with parkinsonism (FTDP) in a Swiss family. The condition is characterized by specific ubiquitin-positive inclusions, distinct from motor neuron disease (MND).

Area of Science:

  • Neuroscience
  • Neuropathology
  • Genetics

Background:

  • Frontotemporal dementia (FTD) is the second leading cause of degenerative dementia.
  • FTD subtypes include frontal lobe dementia, Pick's disease, and FTD with motor neuron disease (MND).
  • Ubiquitin-positive intraneuronal inclusions were typically linked to MND or sporadic FTDP without MND.

Purpose of the Study:

  • To investigate a Swiss family with frontotemporal dementia and parkinsonism (FTDP)-like features.
  • To characterize the clinical, neuropathological, and immunohistochemical profile of this familial FTDP.

Main Methods:

  • Clinical assessment of the affected family.
  • Neuropathological examination of brain tissue.
  • Immunohistochemical analysis for specific protein inclusions.

Main Results:

  • The family presented with FTDP-like features but no motor neuron disease (MND).
  • Neuropathology revealed spongiosis and mild gliosis, but no neurofibrillary tangles, Pick bodies, Lewy bodies, senile plaques, or prion signals.
  • Ubiquitin-positive intracytoplasmic inclusions were predominantly found in the dentate gyrus.

Conclusions:

  • The findings support a distinct familial form of FTDP characterized by ubiquitin-positive intracytoplasmic inclusions.
  • This expands the understanding of FTD heterogeneity and its genetic underpinnings.

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