Absence of dopaminergic neuronal degeneration and oxidative damage in aged <it>DJ-1</it>-deficient mice
<p>Abstract</p> <p>Parkinson's disease is the most common movement disorder characterized by dopaminergic dysfunction and degeneration. Loss-of-function mutations in the <it>DJ-1 </it>gene have been linked to autosomal recessive forms of early-onset familial Parkin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2007-05-01
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| Series: | Molecular Neurodegeneration |
| Online Access: | http://www.molecularneurodegeneration.com/content/2/1/10 |
| Summary: | <p>Abstract</p> <p>Parkinson's disease is the most common movement disorder characterized by dopaminergic dysfunction and degeneration. Loss-of-function mutations in the <it>DJ-1 </it>gene have been linked to autosomal recessive forms of early-onset familial Parkinson's disease. DJ-1 is thought to play roles in protection of cells against oxidative stress and in maintenance of the normal dopaminergic function in the nigrostriatal pathway. Here we investigate the consequence of both DJ-1 inactivation and aging in mice. We found that <it>DJ-1</it>-/- mice at the age of 24–27 months have normal numbers of dopaminergic neurons in the substantia nigra and normal levels of dopamine and its major metabolites in the striatum. The number of noradrenergic neurons in the locus coeruleus is also unchanged in <it>DJ-1</it>-/- mice. Moreover, there is no accumulation of oxidative damage or inclusion bodies in aged <it>DJ-1</it>-/- brains. Together, these results indicate that loss of DJ-1 function alone is insufficient to cause nigral degeneration and oxidative damage in the life span of mice.</p> |
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| ISSN: | 1750-1326 |