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Cytomegalovirus and Rasmussen's encephalitis.
C Power1, S D Poland, W T Blume
1Department of Clinical Neurological Sciences, University of Western Ontario, London, Canada.
Lancet (London, England)
|November 24, 1990
Summary
Cytomegalovirus (CMV) DNA was detected in brain biopsies of most Rasmussen
Area of Science:
- Neurology
- Virology
- Pathology
Background:
- Rasmussen's encephalitis (RE) is a rare autoimmune disease of the brain causing progressive neurological deficits.
- The etiology of RE remains largely unknown, with viral infections being a suspected cause.
Purpose of the Study:
- To investigate the potential role of cytomegalovirus (CMV) in the pathogenesis of Rasmussen's encephalitis (RE).
Main Methods:
- In-situ hybridization using a biotinylated CMV DNA probe was performed on brain biopsy specimens.
- Samples from 10 RE patients and 46 age-matched controls with other neurological diseases were analyzed.
Main Results:
- CMV genomic material was identified in 7 out of 10 RE patients, specifically within neurons, astrocytes, oligodendrocytes, and endothelial cells.
- CMV was detected in only 2 out of 46 control patients.
- Probes for herpes simplex virus and hepatitis B virus were negative in all samples.
Conclusions:
- The findings strongly suggest that cytomegalovirus (CMV) is a likely causative agent in Rasmussen's encephalitis (RE).
- Further research is warranted to elucidate the precise mechanisms of CMV-induced neuroinflammation and neuronal damage in RE.