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Abstract #1285

Reduced cerebral blood flow in boys with Duchenne muscular dystrophy

Nathalie Doorenweerd 1,2 , Eve M Dumas 2 , Eidrees Ghariq 1,3 , Sophie Schmid 1,3 , Chiara S.M. Straathof 2 , Pietro Spitali 4 , Ieke Ginjaar 5 , Beatrijs H Wokke 2 , Debby G.M. Schrans 6 , Janneke C van den Bergen 2 , Erik W van Zwet 7 , Andrew G Webb 1 , Mark A van Buchem 1 , Mathias J.P. van Osch 1,3 , Jan J.G.M. Verschuuren 2 , Jos G.M. Hendriksen 6,8 , Erik H Niks 2 , and Hermien E Kan 1,3

1 Department of Radiology, C.J. Gorter Center for High Field MRI, Leiden University Medical Center, Leiden, Zuid Holland, Netherlands, 2 Department of Neurology, Leiden University Medical Center, Leiden, Zuid Holland, Netherlands, 3 Leiden Institute for Brain and Cognition, Leiden, Zuid Holland, Netherlands, 4 Department of Human Genetics, Leiden University Medical Center, Leiden, Zuid Holland, Netherlands, 5 Department of Clinical Genetics, Leiden University Medical Center, Leiden, Zuid Holland, Netherlands, 6 Department of Neurological Learning Disabilities, Kempenhaeghe Epilepsy Center, Heeze, Noord-Brabant, Netherlands, 7 Department of Medical Statistics, Leiden University Medical Center, Leiden, Zuid Holland, Netherlands, 8 Department of Neurology, Maastricht University Medical Center, Limburg, Netherlands

In addition to muscle weakness, Duchenne muscular dystrophy (DMD) is characterized by specific learning and behavioral disabilities. DMD is caused by mutations in the DMD gene leading to absence of one or more isoforms of the dystrophin protein, which is expressed in muscle, brain, vascular endothelial and smooth muscle cells. We used pCASL to show a reduction in cerebral blood flow in DMD patients compared to healthy controls. These changes were most profound in patients missing both full length dystrophin and Dp140, which suggests that full length and Dp140 play supplementary roles in the vascular involvement in DMD brain pathophysiology.

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