behavior/neurological
• on accelerating rotarod, mutants fall from rod more frequently and at lower rod speeds compared to wild-type controls
• in single bar and parallel bar tests, traverse times are similar to controls, but mutants have increased number of slips and more fall off bars than control mice
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• mutants lose grip in a rope grip test after 90 seconds (15 falls/27 trials) compared to wild-type controls which can retain grip for ~120 seconds (5 falls/27 trials)
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• compared to controls, mice exhibit a clear aberration in hindlimb gait, moving slightly asymmetrically as if limping; controls plant both feet at a regular and equal distance while walking through a narrow alley
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nervous system
N |
• brain morphology is not altered in mutants; Purkinje cell number and morphology is unaffected relative to controls; ERK1/2 phosphorylation is elevated in some brain regions in mutants
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