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Related Experiment Video

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Topological Structural Brain Connectivity Alterations in Aspartylglucosaminuria: A Case-Control Study.

U Roine1,2, A M Tokola1, T Autti1

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AJNR. American Journal of Neuroradiology
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Summary

Structural brain connectivity is altered in aspartylglucosaminuria (AGU), a rare neurodegenerative disease. This study reveals global and local network changes, suggesting brain network properties may aid in monitoring AGU progression.

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Area of Science:

  • Neuroimaging
  • Network Neuroscience
  • Lysosomal Storage Diseases

Background:

  • Aspartylglucosaminuria (AGU) is a progressive neurodegenerative lysosomal storage disease.
  • Previous MRI studies show brain atrophy and white matter abnormalities in AGU.
  • Brain connectivity in AGU has not been previously investigated.

Purpose of the Study:

  • To investigate global and local structural brain connectivity in AGU.
  • To characterize network alterations in patients with AGU.
  • To explore potential biomarkers for AGU progression.

Main Methods:

  • Diffusion MRI and T1-weighted imaging from 12 AGU patients and 30 controls.
  • Whole-brain constrained spherical deconvolution tractography.
  • Graph-theoretical analysis of structural brain networks.

Main Results:

  • Decreased network integration (global efficiency, characteristic path length).
  • Reduced average network strength.
  • Decreased local network strength in specific brain regions (thalamus, putamen, occipital/temporal lobes).

Conclusions:

  • Global and local structural connectivity alterations are present in AGU.
  • Brain network properties show potential as biomarkers for treatment efficacy and long-term follow-up in AGU.