An autopsied case of sporadic adult-onset amyotrophic lateral sclerosis with FUS-positive basophilic inclusions

Takeshi Matsuoka, Naoki Fujii, Akira Kondo, Akiko Iwaki, Toshihiro Hokonohara, Hiroyuki Honda, Kensuke Sasaki, Satoshi O. Suzuki, Toru Iwaki

Research output: Contribution to journalArticle

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Abstract

Basophilic inclusions (BIs), which are characterized by their staining properties of being weakly argyrophilic, reactive with Nissl staining, and immunohistochemically negative for tau and transactive response (TAR) DNA-binding protein 43 (TDP-43), have been identified in patients with juvenile-onset amyotrophic lateral sclerosis (ALS) and adult-onset atypical ALS with ophthalmoplegia, autonomic dysfunction, cerebellar ataxia, or a frontal lobe syndrome. Mutations in the fused in sarcoma gene (FUS) have been reported in cases of familial and sporadic ALS, and FUS immunoreactivity has been demonstrated in basophilic inclusion body disease (BIBD), neuronal intermediate filament inclusion disease (NIFID), and atypical frontotemporal lobar degeneration with ubiquitin-positive and tau-negative inclusions (aFTLD-U). In the present study, we immunohistochemically and ultrastructurally studied an autopsy case of sporadic adult-onset ALS with numerous BIs. The patient presented with the classical clinical course of ALS since 75 years of age and died at age 79. Postmortem examination revealed that both Betz cells in the motor cortex and motor neurons in the spinal cord were affected. The substantia nigra was spared. Notably, BIs were frequently observed in the motor neurons of the anterior horns, the inferior olivary nuclei, and the basal nuclei of Meynert. BIs were immunopositive for p62, LC3, and FUS, but immunonegative for tau, TDP-43, and neurofilament. Ultrastructurally, BIs consisted of filamentous or granular structures associated with degenerated organelles with no limiting membrane. There were no Bunina bodies, skein-like inclusions, or Lewy-like inclusions. All exons and exon/intron boundaries of the FUS gene were sequenced but no mutations were identified.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalNeuropathology
Volume31
Issue number1
DOIs
Publication statusPublished - Feb 1 2011

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Amyotrophic Lateral Sclerosis
Sarcoma
Intermediate Filaments
Genes
Cytomegalovirus Infections
DNA-Binding Proteins
Motor Neurons
Autopsy
Exons
Frontotemporal Lobar Degeneration
Olivary Nucleus
Basal Nucleus of Meynert
Ophthalmoplegia
Negative Staining
Cerebellar Ataxia
Mutation
Inclusion Bodies
Motor Cortex
Frontal Lobe
Substantia Nigra

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Clinical Neurology

Cite this

An autopsied case of sporadic adult-onset amyotrophic lateral sclerosis with FUS-positive basophilic inclusions. / Matsuoka, Takeshi; Fujii, Naoki; Kondo, Akira; Iwaki, Akiko; Hokonohara, Toshihiro; Honda, Hiroyuki; Sasaki, Kensuke; Suzuki, Satoshi O.; Iwaki, Toru.

In: Neuropathology, Vol. 31, No. 1, 01.02.2011, p. 71-76.

Research output: Contribution to journalArticle

Matsuoka, Takeshi ; Fujii, Naoki ; Kondo, Akira ; Iwaki, Akiko ; Hokonohara, Toshihiro ; Honda, Hiroyuki ; Sasaki, Kensuke ; Suzuki, Satoshi O. ; Iwaki, Toru. / An autopsied case of sporadic adult-onset amyotrophic lateral sclerosis with FUS-positive basophilic inclusions. In: Neuropathology. 2011 ; Vol. 31, No. 1. pp. 71-76.
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