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Pamela Bido 1 Article
Changes in Cerebral Gray and White Matter in Patients with Pantothenate Kinase-Associated Neurodegeneration: A Long-Term Magnetic Resonance Imaging Follow-Up Study
Pedro Roa-Sanchez, Pamela Bido, Jairo Oviedo, Hans-Jürgen Huppertz, Herwin Speckter, Peter Stoeter
J Mov Disord. 2021;14(2):148-152.   Published online May 26, 2021
DOI: https://doi.org/10.14802/jmd.20102
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AbstractAbstract PDFSupplementary Material
Objective
To determine the volume changes in gray and white matter during a long-term follow-up in patients suffering from pantothenate kinase-associated neurodegeneration (PKAN).
Methods
Magnetic resonance imaging was repeated in 13 patients and 14 age-matched controls after a mean interval of more than 7 years. T1-weighted sequences were evaluated by fully automated atlas-based volumetry, compared between groups and correlated with disease progression.
Results
The patients did not show generalized cerebral atrophy but did show a significantly faster volume reduction in the globus pallidus during follow-up (between -0.96% and -1.02% per year, p < 0.05 adjusted for false discovery rate) than controls, which was significantly related to the progression in their dystonia scores (p = 0.032).
Conclusion
The volume loss in the globus pallidus over time—together with the accumulation of iron known as the “tiger’s eye”—supports the pathophysiologic concept of this nucleus as a center of inhibition and its severe malfunction in PKAN.

JMD : Journal of Movement Disorders