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  • Title: Ubiquitin-immunoreactive filamentous inclusions in anterior horn cells of Guamanian and non-Guamanian amyotrophic lateral sclerosis.
    Author: Matsumoto S, Hirano A, Goto S.
    Journal: Acta Neuropathol; 1990; 80(3):233-8. PubMed ID: 2169172.
    Abstract:
    Immunohistochemical studies with an antibody to ubiquitin revealed the presence of filamentous inclusions in spinal anterior horn cells in all of six patients with Guamanian amyotrophic lateral sclerosis (ALS) and one of six cases of parkinsonism-dementia complex (PD) on Guam. Similar ubiquitin-reactive filamentous inclusions were found in all of seven non-Guamanian sporadic ALS patients examined. No similar inclusions were seen in six normal controls or in non-ALS patients who had chromatolytic neurons. The filamentous inclusions differed from spinal neurofibrillary tangles, a characteristic feature of Guamanian ALS and PD, since they were restricted to anterior horn cells and did not react with anti-tau antibody. The chromatolytic neurons of non-ALS patients occasionally had weak diffuse immunoreactivity, but no focal inclusions were detected. These results suggest that ubiquitin-reactive focal filamentous inclusions may reflect a characteristic degenerative process of anterior horn cells of motor neuron disease.
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