Abstract:
:We measured beta-carbolinium cations (BC+s) endogenous analogs of the N-methyl-4-phenylpyridinium ion (MPP+), in the lumbar CSF of 22 patients with idiopathic Parkinson's disease (PD) and 11 age-matched controls without any symptoms of parkinsonism. Among the BC+s, 2,9-diemethylnorharmanium cation (2,9-Me2NH+), the most potent neurotoxicant that mirrors MPP+ in mitochondria toxicity, was present in 12 patients with PD but not in controls. Although the 2-monomethylated beta-carbolinium cations (2-MeBC+s), which were present in almost all subjects, registered a slightly higher level in PD patients than in controls, the difference was not significant. The total BC+ content, sum of 2-MeBC+ and 2,9-Me2NH+ levels, was significantly higher in PD patients than in controls. The 2-MeBC+ contents significantly increased with the progression of the PD, but 2,9-Me2NH+ decreased as the disease exacerbated, although levels varied within a wide range. The present results strongly support the hypothesis that "bioactivated" BC+s, especially 2,9-Me2NH+s, may be the endogenous causative factors underlying PD.
journal_name
Neurologyjournal_title
Neurologyauthors
Matsubara K,Kobayashi S,Kobayashi Y,Yamashita K,Koide H,Hatta M,Iwamoto K,Tanaka O,Kimura Kdoi
10.1212/wnl.45.12.2240subject
Has Abstractpub_date
1995-12-01 00:00:00pages
2240-5issue
12eissn
0028-3878issn
1526-632Xjournal_volume
45pub_type
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