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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Intraventricular administration of recombinant adenovirus to neonatal twitcher mouse leads to clinicopathological improvements.

Twitcher mouse is a murine model of human globoid cell leukodystrophy (Krabbe disease), which is characterized by a genetic deficiency in galactocerebrosidase (GALC) activity. The nervous system is affected early and severely by demyelination in the white matter. So far, there is no effective treatment for Krabbe disease except bone marrow transplantation (BMT). However, BMT has inherent limitations such as unavailability of donors and graft-versus-host disease. In this study, we injected recombinant adenovirus encoding GALC into the lateral ventricle of twitcher mice at postnatal day 0 ( PND 0) and the therapeutic effects were evaluated. Our results showed slight, but significant improvements in motor functions, body weight and twitching and a prolonged life span. In brain, GALC activity was increased to 15% that of normal littermates and psychosine concentration was decreased to 55% that of untreated twitcher mice at PND 15. The number of PAS-positive globoid cells in brain stem was also reduced significantly at PND 35. In contrast, when adenoviruses were injected to the twitcher mice at PND 15, almost no improvements were observed. These results demonstrate that the timing of treatment may be of great importance in Krabbe disease.[1]

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