Uncovering amyotrophic lateral sclerosis phenotypes: clinical features and long-term follow-up of upper motor neuron-dominant ALS

Mario Sabatelli, Marcella Zollino, Giuseppe Marangi, Marco Luigetti, Serena Lattante, Mauro Lo Monaco, Francesca Madia, Emiliana Meleo, Giulia Bisogni, Amelia Conte

Risultato della ricerca: Contributo in rivistaArticolo in rivista

25 Citazioni (Scopus)

Abstract

The aim of our study was to analyse the natural history and clinical features of upper motor neuron- dominant (UMN-D) ALS. We studied a large series of sporadic ALS patients admitted in a single referral centre over a 23-year period. UMN-D phenotype was compared with other ALS forms, including classic ALS, flail arm and progressive muscular atrophy. Seven hundred and thirty-four sporadic ALS patients were included of which 163 had UMN-D ALS. The mean age of onset in UMN-D ALS (52 years) was 10 years lower than in classic ALS (61.4 years, p < 0.0001); sex ratio by age groups significantly differed with respect to other phenotypes. The pattern of spread of lower motor neuron signs in UMN-D was characterized by early involvement of upper limb muscles and late impairment of respiratory muscles. Duration of the disease was longer in the UMN-D group (56 months) than in classic ALS (33 months, p < 0.001). The UMN-D phenotype was a strong independent predictor of long survival. In summary, UMN-D ALS showed significant differences in age of onset, sex ratio, pattern of spreading and prognosis with respect to other ALS forms, most probably reflecting biological differences.
Lingua originaleEnglish
pagine (da-a)278-282
Numero di pagine5
RivistaAmyotrophic Lateral Sclerosis
Volume12
DOI
Stato di pubblicazionePubblicato - 2011

Keywords

  • Adult
  • Age of Onset
  • Aged
  • Aged, 80 and over
  • Amyotrophic Lateral Sclerosis
  • Disease Progression
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Motor Neurons
  • Phenotype
  • Survival Rate
  • Young Adult

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