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McGowan, J.C. et al.

McGowan, Haskins, Wenger, Vite,

Investigating demyelination in the brain in a canine model of globoid cell leukodystrophy (Krabbe disease) using magnetization transfer contrast: preliminary results.

PURPOSE: This study was designed to examine the use of quantitative magnetization transfer imaging (MTI) in naturally occurring globoid cell leukodystrophy (GLD) in the Cairn terrier. METHOD: A model of GLD was established via a breeding colony, and a total of seven animals were studied with MTI, including two dogs with GLD, one of which underwent whole-body irradiation (725 cGy) and bone marrow transplantation from a genotypically normal littermate. The remaining dogs served as untreated, irradiated, and unirradiated controls. RESULTS: Region-of-interest (ROI) analysis of the MTI showed a decrease in MT ratio (MTR) in the internal capsule of the untreated/affected dog compared with age-matched controls but revealed similar results in the two other study animals. On MT contour plotting, inside-to-out gradients of MTR mimicked the demyelination pathology of the disease in the untreated/affected dog. CONCLUSION: MT contour plotting demonstrated patterns of MT abnormality in the untreated/affected dog that were consistent with histopathology, establishing a clear relationship between pathology-proven demyelination and MTR as well as a striking contrast to the patterns of radiation damage.[1]

References

Investigating demyelination in the brain in a canine model of globoid cell leukodystrophy (Krabbe disease) using magnetization transfer contrast: preliminary results. McGowan, J.C., Haskins, M., Wenger, D.A., Vite, C. Journal of computer assisted tomography. (2000) [Pubmed]

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