Assessment of swallowing in motor neuron disease and Asidan/SCA36 patients with new methods

Nobutoshi Morimoto, Toru Yamashita, Kota Sato, Tomoko Kurata, Yoshio Ikeda, Toshimasa Kusuhara, Naomichi Murata, Koji Abe

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Background: We report on a unique complication of cerebellar ataxia and motor neuron disease named Asidan/SCA36 with a high frequency of tongue atrophy. We aimed to elucidate dysphagia in amyotrophic lateral sclerosis (ALS) and spinal, bulbar muscular atrophy (SBMA), and Asidan/SCA36 patients with new methods. Methods: Patients diagnosed with ALS (n = 20), SBMA (n = 6), and Asidan (n = 12) were included. A videofluoroscopic swallow study (VFS), an assessment of maximal tongue pressure (MTP), and impedance pharyngography (IPG) were applied. Results: The frequencies of VFS abnormalities were 70%, 50%, and 33% in ALS, SBMA, and Asidan/SCA36, respectively. Compared with control subjects (31.6 ± 6.3 kPa, mean ± SD), MTP was significantly decreased in ALS patients and SBMA patients, but was relatively preserved in Asidan patients. ALS patients performed more swallowing actions (Ns) detected by IPG than did control subjects, but SBMA and Asidan/SCA36 patients performed similar Ns to control subjects. Conclusions: VFS showed a higher frequency of swallowing abnormalities in ALS patients. MTP and IPG measurements showed the most severe involvement in ALS patients and a relatively preserved swallowing function in SBMA and Asidan/SCA36 patients.

Original languageEnglish
Pages (from-to)149-155
Number of pages7
JournalJournal of the neurological sciences
Issue number1-2
Publication statusPublished - Jan 15 2013


  • Amyotrophic lateral sclerosis (ALS)
  • Asidan/SCA36
  • Impedance pharyngography (IPG)
  • Spinal and bulbar muscular atrophy (SBMA)

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology


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