behavior/neurological
• increased time to their bodies 180 degrees in the vertical pole test
• however, mice exhibit normal time to descend a vertical pole and performance on a rotarod
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• short stride length, increased stride frequency and increased step angle variability
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bradykinesia
(
J:225345
)
• decreased locomoter activity, shorter time mobile and decreased distance traveled in an open-field test
• increased traversal time to cross a horizontal ladder
• however, treatment with L-DOPA increases motility
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cellular
• swollen and bulbous with no normal cristae and non-descript granular debris in mouse embryonic fibroblast
• however, mitochondria morphology in heart tissue is normal
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• elevated reactive oxygen species in mouse embryonic fibroblasts
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nervous system
• significant loss of TH+ and Nissl stained neurons at 12 months in the substantia nigra pars compacta
• however, ventral tegmental area neuron numbers is normal and no neurodegeneration is detected in the cortex, hippocampus and cerebellum
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homeostasis/metabolism
N |
• mice exhibit normal serotonin levels
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• starting at 2 months
• significant at 12 months with reduced dihydroxyphenylacetic acid levels
• however, 3-methoxytyramine and homovanillic acid levels are normal
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