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Tubulovesicular structures in Creutzfeldt-Jakob disease
P P Liberski1, H Budka, E Sluga
1Department of Oncology, Medical Academy Lodz, Poland.
Acta Neuropathologica
|January 1, 1992
Summary
Tubulovesicular structures (TVS) were found in human Creutzfeldt-Jakob disease (CJD) brains. These structures are also present in other prion diseases, suggesting their biological significance in transmissible spongiform encephalopathies.
Area of Science:
- Neuropathology
- Electron Microscopy
- Prion Diseases
Background:
- Tubulovesicular structures (TVS) are characteristic findings in animal transmissible spongiform encephalopathies (TSEs).
- Previous studies have not consistently reported TVS in human Creutzfeldt-Jakob disease (CJD).
Purpose of the Study:
- To report the first detection of TVS in human CJD brain tissue using transmission electron microscopy.
- To investigate the presence and characteristics of TVS in human CJD.
Main Methods:
- Transmission electron microscopy was used to examine brain tissue specimens from human CJD cases.
- Analysis focused on identifying and characterizing tubulovesicular structures within neuronal compartments.
Main Results:
- Tubulovesicular structures (TVS) were identified in all three examined human CJD specimens (two biopsies, one autopsy).
- TVS were observed in distended pre- and postsynaptic terminals, measuring approximately 35 nm in diameter.
- These structures were rarer and denser than typical synaptic vesicles.
Conclusions:
- The presence of TVS in human CJD aligns with findings in other TSEs, regardless of host or prion strain.
- The consistent observation of TVS across various TSEs suggests a significant biological role in prion disease pathogenesis.