Document Detail


Astrocytic inclusions in epilepsy: expanding the spectrum of filaminopathies.
MedLine Citation:
PMID:  18596546     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We report the finding of unique astrocytic inclusions in a series of pediatric epilepsy patients, all of whom presented with seizures in their first year of life and had mild-to-moderate developmental delay. All eventually underwent surgical treatment for refractory epilepsy and, on pathological examination, were found to have distinctive, eosinophilic, globular cytoplasmic inclusions confined to cortical astrocytes. These inclusions were almost exclusively juxtanuclear, highly refractile, spared distal subpial, or perivascular astrocytic processes and were strongly and exclusively immunopositive for filamin A, an actin binding protein involved in neuronal migration. Identical inclusions have been identified and characterized in cases of Aicardi syndrome, a rare neurodevelopmental disease. The presence of the same inclusions in the cortex of epilepsy patients, some of whom had concomitant brain anomalies related to migrational problems, prompted us to consider that these patients may lie within a spectrum of disease involving dysfunction of filamin or filamin-interacting proteins. The term "filaminopathy" is tentatively proposed as a distinct pathological entity for this condition in which clinical manifestations range from epilepsy in mildly neurologically impaired patients to severe mental and physical handicap in the Aicardi syndrome. Future studies will be necessary to unravel the exact nature of the filamin A protein or gene aberrations in these patients.
Authors:
Lili-Naz Hazrati; B K Kleinschmidt-DeMasters; Michael H Handler; Mary Lou Smith; Ayako Ochi; Hiroshi Otsubo; James T Rutka; Cristina Go; Shelly Weiss; Cynthia E Hawkins
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of neuropathology and experimental neurology     Volume:  67     ISSN:  0022-3069     ISO Abbreviation:  J. Neuropathol. Exp. Neurol.     Publication Date:  2008 Jul 
Date Detail:
Created Date:  2008-08-01     Completed Date:  2008-09-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985192R     Medline TA:  J Neuropathol Exp Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  669-76     Citation Subset:  IM    
Affiliation:
Division of Pathology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada.
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MeSH Terms
Descriptor/Qualifier:
Astrocytes / pathology*
Child
Child, Preschool
Contractile Proteins / metabolism*
Epilepsy / pathology*
Female
Humans
Inclusion Bodies / metabolism*,  pathology
Magnetic Resonance Imaging / methods
Male
Microfilament Proteins / metabolism*
Microscopy, Electron, Transmission / methods
Chemical
Reg. No./Substance:
0/Contractile Proteins; 0/Microfilament Proteins; 0/filamins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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