Abstract：
:The present study evaluated the ability of salicylic acid (SA) to attenuate long-term L-DOPA-induced 6-hydroxydopamine (6-OHDA) formation in the striatum of mice, and to protect against the resulting dopaminergic neurotoxicity. The production of 6-OHDA from dopamine in vitro from ferrous-ascorbate-dopamine (FAD) hydroxyl radical ((*)OH) generating system or in vivo in the striatum following prolonged administration of L-DOPA in mice were found to be significantly attenuated by SA. Intra-median forebrain bundle infusion of FAD, but not equivalent dose of ferrous ion or dopamine individually, caused significant striatal dopamine depletion, which was blocked by SA administration. The dose- and time-dependent increase in the formation of 6-OHDA following L-DOPA treatment in the mouse striatum was synergistically enhanced to the systemic administration of the parkinsonian neurotoxin, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine. SA treatment significantly attenuated the L-DOPA plus the parkinsonian neurotoxin-induced striatal 6-OHDA generation, and protected against striatal dopamine loss. The present study demonstrated a novel mode of dopaminergic neuroprotection by SA and its possible therapeutic implication in the treatment of Parkinson's disease.
journal_name
Brain Resjournal_title
Brain researchauthors
Borah A,Mohanakumar KPdoi
10.1016/j.brainres.2010.05.010subject
Has Abstractpub_date
2010-07-16 00:00:00pages
192-9eissn
0006-8993issn
1872-6240pii
S0006-8993(10)01089-9journal_volume
1344pub_type
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