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

Regional brain variations of cytochrome oxidase activity and motor co-ordination in staggerer mutant mice.

A mutant mouse with cerebellar cortical atrophy, staggerer, was examined in tests of motor activity and co-ordination as well as in regional brain metabolism as assessed by cytochrome oxidase activity. Compared with non-ataxic controls, staggerer mutants had inferior performances in the open field, the wooden beam, the wooden edge, and the rotorod tests. An increase in cytochrome oxidase activity in the deep cerebellar nuclei and in some cerebellar efferent regions, such as the lateral vestibular nucleus, the parvicellular red nucleus, and the ventral tegmental area, was found in staggerer mutant mice. Abnormally high cytochrome oxidase activity in the interpositus and the dentate nuclei was linearly correlated with poor performance on the wooden beam and on the rotorod. High cytochrome oxidase activity in the lateral vestibular nucleus was also associated with poor performance on the wooden beam. Moreover, high cytochrome oxidase activity in the fastigial nucleus was associated with poor performance on the wooden beam but with high motor activity in the open field. These results indicate that a lack of innervation of Purkinje cells to the deep cerebellar nuclei is in part the cause of motor co-ordination deficits in staggerer mutant mice.[1]

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