nervous system
• TH+ neurons in the substantia nigra, ventral tegmental area and the locus coeruleus exhibit an age-dependent loss
• the number of TH+ neurons is slightly lower than in wild-type mice
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• the input resistance in the striatal motorsensory neurons is smaller than wild-type mice
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• mice exhibit a 4% reduction in TH+ neurons when treated with the dopamine neurotoxin MPTP compared to 27% in wild-type mice
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• the paired pulse ratio following treatment with nomiferensine (a selective dopamine re-uptake inhibitor) is decreased whereas it is slightly increased in wild-type mice
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• the inhibitory postsynaptic current is decreased when stimulated at low frequency before and after treatment with nomiferensine compared to in wild-type mice
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behavior/neurological
• initial locomotor activity is lower than in wild-type mice but unlike in wild-type mice activity does not decrease following habituation
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homeostasis/metabolism
• mice exhibit a 4% reduction in TH+ neurons when treated with the dopamine neurotoxin MPTP compared to 27% in wild-type mice
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• dopamine levels in the striatum are decreased 60% of wild-type
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cellular
• mice exhibit a 4% reduction in TH+ neurons when treated with the dopamine neurotoxin MPTP compared to 27% in wild-type mice
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