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Publication : Neurological deficits in mice with profound biotinidase deficiency are associated with demylination and axonal degeneration.

First Author  Pindolia K Year  2012
Journal  Neurobiol Dis Volume  47
Issue  3 Pages  428-35
PubMed ID  22579707 Mgi Jnum  J:314752
Mgi Id  MGI:6822378 Doi  10.1016/j.nbd.2012.04.016
Citation  Pindolia K, et al. (2012) Neurological deficits in mice with profound biotinidase deficiency are associated with demylination and axonal degeneration. Neurobiol Dis 47(3):428-35
abstractText  Biotinidase deficiency is an autosomal recessively inherited disorder characterized by neurological and cutaneous abnormalities. We have developed a transgenic knock-out mouse with biotinidase deficiency to better understand aspects of pathophysiology and natural history of the disorder in humans. Neurological deficits observed in symptomatic mice with biotinidase deficiency are similar to those seen in symptomatic children with the disorder. Using a battery of functional neurological assessment tests, the symptomatic mice performed poorly compared to wild-type mice. Demyelination, axonal degeneration, ventriculomegaly, and corpus callosum compression were found in the brains of untreated, symptomatic enzyme-deficient mice. With biotin treatment, the symptomatic mice improved neurologically and the white matter abnormalities resolved. These functional and anatomical findings and their reversal with biotin therapy are similar to those observed in untreated, symptomatic and treated individuals with biotinidase deficiency. The mouse with biotinidase deficiency appears to be an appropriate animal model in which to study the neurological abnormalities and the effects of treatment of the disorder.
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