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Regional brain atrophy in overactive bladder syndrome: a voxel based morphometry study.

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Patients with overactive bladder (OAB) show reduced gray matter volume in key brain areas, including the cerebellum and hippocampus. These brain changes correlate with OAB symptom severity, suggesting a link between brain structure and OAB neuropathology.

Keywords:
Brain-bladder control networkGray matter volumeOveractive bladder syndromeStructural reorganizationVoxel-based morphometry

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Area of Science:

  • Neuroscience
  • Urology
  • Medical Imaging

Background:

  • Overactive bladder (OAB) syndrome is a common condition characterized by urinary urgency.
  • The underlying neuropathological mechanisms of OAB are not fully understood.
  • Brain structural changes may play a role in OAB pathophysiology.

Purpose of the Study:

  • To investigate brain gray matter volume differences in patients with OAB compared to healthy controls.
  • To explore the correlation between brain structural changes and OAB symptom severity.

Main Methods:

  • Structural magnetic resonance imaging (MRI) was used to acquire data from 28 OAB patients and 28 controls.
  • Voxel-based morphometry (VBM) was employed to compare gray matter volume (GMV) between groups.
  • OAB symptom score (OABSS) was used to assess symptom severity, and correlation analysis was performed.

Main Results:

  • OAB patients exhibited reduced GMV in several brain regions, including the cerebellum, hippocampus, insula, and anterior cingulate gyrus.
  • A significant negative correlation was found between the GMV of the right cerebellar hemisphere and OABSS scores.
  • These findings indicate structural reorganization within the brain-bladder control network in OAB.

Conclusions:

  • Patients with OAB demonstrate abnormal GMV in brain regions integral to the brain-bladder control network.
  • These structural alterations provide insights into the neuropathological mechanisms underlying OAB.
  • The observed patterns of brain reorganization may be crucial for understanding OAB development and progression.