Abstract:
OBJECTIVE:Machado-Joseph disease (MJD) is a neurodegenerative disease which usually presents several clinical findings including cerebellar ataxia and other extracerebellar features, such as Parkinsonism, dystonia, peripheral neuropathy, and lower motor neuron disease. Some data have demonstrated a high frequency of sleep disorders in these patients, including excessive daytime sleepiness (EDS), insomnia, obstructive sleep apnea (OSA), rapid eye movement (REM) sleep behavior disorder (RBD), and restless legs syndrome (RLS). Herein, we aimed to describe the high frequency of excessive fragmentary myoclonus (EFM) in MJD. MATERIALS AND METHODS:We recruited 44 patients with MJD and 44 healthy controls. All participants underwent an all-night polysomnography (PSG). EFM was evaluated and defined in accordance to the criteria of the American Academy of Sleep Medicine. RESULTS:Half of the MJD patients (n = 22) had EFM diagnosed through PSG, though no healthy control participant presented this finding (P < .0001). In the MJD group, older participants and men had a higher frequency of EFM. There was no correlation between EFM and the following data: body mass index (BMI), apnea-hypopnea index (AHI), EDS, loss of atonia during REM sleep, periodic limb movements during sleep (PLMS), RLS, RBD, ataxia severity, the number of cytosine-adenine-guanine trinucleotide (CAG) repeats, disease duration, sleep efficiency, sleep fragmentation, and sleep stage percentages between patients with or without EFM. CONCLUSION:EFM is highly prevalent in patients with MJD. Our study demonstrates that EFM must be included in the clinical spectrum of sleep disorders in MJD patients.
journal_name
Sleep Medjournal_title
Sleep medicineauthors
dos Santos DF,Pedroso JL,Braga-Neto P,Silva GM,de Carvalho LB,Prado LB,Barsottini OG,do Prado GFdoi
10.1016/j.sleep.2013.09.025subject
Has Abstractpub_date
2014-03-01 00:00:00pages
355-8issue
3eissn
1389-9457issn
1878-5506pii
S1389-9457(13)02042-Xjournal_volume
15pub_type
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