Clinical correlates of autonomic dysfunction in patients with Machado-Joseph disease
Article first published online: 11 JAN 2010
Copyright © 2010 The Authors. Journal compilation © 2010 Blackwell Munksgaard
Acta Neurologica Scandinavica
Volume 121, Issue 6, pages 422–425, June 2010
How to Cite
França Jr, M. C., D’Abreu, A., Nucci, A. and Lopes-Cendes, I. (2010), Clinical correlates of autonomic dysfunction in patients with Machado-Joseph disease. Acta Neurologica Scandinavica, 121: 422–425. doi: 10.1111/j.1600-0404.2009.01249.x
- Issue published online: 17 MAY 2010
- Article first published online: 11 JAN 2010
- Accepted for publication July 5, 2009
- spinocerebellar ataxia type 3;
- Machado-Joseph disease;
- autonomic dysfunction;
- peripheral neuropathy;
França Jr MC, D’Abreu A, Nucci A, Lopes-Cendes I. Clinical correlates of autonomic dysfunction in patients with Machado-Joseph disease. Acta Neurol Scand: 2010: 121: 422–425. © 2010 The Authors Journal compilation © 2010 Blackwell Munksgaard.
Background – Autonomic dysfunction is a usual feature of several neurological conditions characterized by either extra-pyramidal and/or peripheral damage, such as those seen in Machado-Joseph disease (MJD).
Aims of the study – We used clinical evaluation and sympathetic skin responses (SSR) to assess autonomic function in a large series of patients with MJD.
Methods – A total of 50 patients were enrolled in this study and all of them had the molecular confirmation of MJD by DNA genotyping. In addition, a group of 20 control subjects was included.
Results – Overall, autonomic complaints were more frequent in patients than in control subjects, especially those related to the genitourinary and sudomotor systems. Eighteen patients (36%) presented abnormal SSR. Age at onset, duration of disease and length of expanded (CAG)n were not different between patients with and without dysautonomia. However, severe dysautonomia was significantly associated with polyneuropathic or parkinsonian phenotypes in patients with MJD.
Conclusion – Autonomic symptoms are common, but possibly under recognized in patients with MJD; therefore, we believe that autonomic complaints should be sought in patients with MJD, especially in those with parkinsonian or polyneuropathic phenotypes.