TY - JOUR
T1 - Absence of dopaminergic neuronal degeneration and oxidative damage in aged DJ-I-deficient mice
AU - Yamaguchi, Hiroo
AU - Shen, Jie
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007
Y1 - 2007
N2 - Parkinson's disease is the most common movement disorder characterized by dopaminergic dysfunction and degeneration. Loss-of-function mutations in the DJ-I gene have been linked to autosomal recessive forms of early-onset familial Parkinson's disease. DJ-I 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-I inactivation and aging in mice. We found that DJ-I-I- 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 DJ-I-I- mice. Moreover, there is no accumulation of oxidative damage or inclusion bodies in aged DJ-I-I- brains. Together, these results indicate that loss of DJ-I function alone is insufficient to cause nigral degeneration and oxidative damage in the life span of mice.
AB - Parkinson's disease is the most common movement disorder characterized by dopaminergic dysfunction and degeneration. Loss-of-function mutations in the DJ-I gene have been linked to autosomal recessive forms of early-onset familial Parkinson's disease. DJ-I 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-I inactivation and aging in mice. We found that DJ-I-I- 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 DJ-I-I- mice. Moreover, there is no accumulation of oxidative damage or inclusion bodies in aged DJ-I-I- brains. Together, these results indicate that loss of DJ-I function alone is insufficient to cause nigral degeneration and oxidative damage in the life span of mice.
UR - http://www.scopus.com/inward/record.url?scp=34250334136&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34250334136&partnerID=8YFLogxK
U2 - 10.1186/1750-1326-2-10
DO - 10.1186/1750-1326-2-10
M3 - Article
AN - SCOPUS:34250334136
VL - 2
JO - Molecular Neurodegeneration
JF - Molecular Neurodegeneration
SN - 1750-1326
IS - 1
M1 - 10
ER -