4.7 Article

Obsessive-compulsive symptoms are negatively correlated with motor severity in patients with generalized dystonia

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SCIENTIFIC REPORTS
卷 12, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41598-022-24826-x

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  1. JSPS KAKENHI [JP16KK0182, JP20K17932, 20K16759]
  2. TERUMO LIFE SCIENCE FOUNDATION

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This study aimed to investigate the correlations between motor symptoms and obsessive-compulsive symptoms, as well as between the volumes of basal ganglia components and obsessive-compulsive symptoms. The results revealed a positive correlation between obsessive-compulsive symptoms and the volumes of the nucleus accumbens, while motor symptoms showed a negative correlation. This highlights the potential pathogenesis of obsessive-compulsive disorder and dystonia.
We aimed to clarify the correlations between motor symptoms and obsessive-compulsive symptoms and between the volumes of basal ganglia components and obsessive-compulsive symptoms. We retrospectively included 14 patients with medically intractable, moderate and severe generalized dystonia. The Burke-Fahn-Marsden Dystonia Rating Scale and Maudsley Obsessional Compulsive Inventory were used to evaluate the severity of dystonia and obsessive-compulsive symptoms, respectively. Patients with generalized dystonia were divided into two groups; patients whose Maudsley Obsessional Compulsive Inventory score was lower than 13 (Group 1) and 13 or more (Group 2). Additionally, the total Maudsley Obsessional Compulsive Inventory scores in patients with dystonia were significantly higher than normal volunteers' scores (p = 0.025). Unexpectedly, Group 2 (high Maudsley Obsessional Compulsive Inventory scores) showed milder motor symptoms than Group 1 (low Maudsley Obsessional Compulsive Inventory scores) (p = 0.016). Checking rituals had a strong and significant negative correlation with the Burke-Fahn-Marsden Dystonia Rating Scale (rho = - 0.71, p = 0.024) and a strong positive correlation with the volumes of both sides of the nucleus accumbens (right: rho = 0.72, p = 0.023; left: rho = 0.70, p = 0.034). Our results may provide insights into the pathogenesis of obsessive-compulsive disorder and dystonia.

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