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Abstract #2684

Diffusion basis spectrum imaging (DBSI) and manganese-enhanced MRI (MEMRI) detect axonal pathologies with decreased axonal transport in optic nerves of DBA/2J mice

Chia-Wen Chiang 1 , Tsen-Hsuan Lin 2 , Joong Hee Kim 1 , and Sheng-Kwei Song 1,3

1 Radiology, Washington University School of Medicine, St. Louis, MO, United States, 2 Physics, Washington University, St. Louis, MO, United States, 3 The Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, United States

In this study, in vivo diffusion basis spectrum imaging (DBSI) and manganese-enhanced MRI (MEMRI) were performed to assess axonal pathologies (inflammation, demyelination and axonal injury) and to determine the degree of axonal transport deficit in 12-month old DBA/2J mice, a rodent model of glaucoma which develops progressive degeneration of visual function mimicking human glaucoma. Our results suggest that DBA/2J mice developed inflammation, axonal injury, demyelination with significant axonal transport disruption in optic nerves compared with the age-matched controls.

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