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Depressive symptoms in Machado-Joseph disease (SCA3) patients and their relatives

C R Cecchin1, A P Pires, C R Rieder

  • 1Medical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.

Community Genetics
|December 15, 2006
PubMed

Insights

Depression is common in Machado-Joseph disease (MJD) patients and their spouses. Depressive symptoms correlate with motor incapacitation in MJD patients, suggesting a reactive rather than primary disease link.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Genetics

Background:

  • Machado-Joseph disease (MJD), also known as spinocerebellar ataxia type 3, is a progressive neurodegenerative disorder.
  • Depression is a common comorbidity in neurodegenerative diseases, impacting patient quality of life and caregiver burden.

Purpose of the Study:

  • To assess depression scores in MJD patients, their spouses, and at-risk individuals.
  • To investigate the correlation between depressive symptoms and motor incapacitation in MJD patients.

Main Methods:

  • A cross-sectional study involving 246 participants: MJD patients, their spouses, individuals at risk for MJD, and a multiple sclerosis control group.
  • Utilized the Beck Depression Inventory and the Barthel index of physical incapacitation.

Main Results:

  • 33.5% of MJD family members reported moderate to severe depressive scores, with a significant linear reduction in risk groups.
  • A direct correlation was observed between depression scores and motor incapacitation in MJD patients (r = 0.507, p < 0.0001).
  • Depression was associated with age and female sex in MJD families.

Conclusions:

  • Depressive symptoms are prevalent in MJD patients and their spouses, indicating a significant caregiver burden.
  • Depression in MJD appears to be a reactive response to the disease and its impact, rather than a primary feature of the disease process.
Abstract

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