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

研究成果: Contribution to journalArticle査読

22 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)71-76
ページ数6
ジャーナルNeuropathology
31
1
DOI
出版ステータス出版済み - 2 2011

All Science Journal Classification (ASJC) codes

  • 病理学および法医学
  • 臨床神経学

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