N‐Methyl‐4‐Phenyl‐1,2,3,6‐Tetrahydropyridine Increases Acetylcholine and Decreases Dopamine in Mouse Striatum: Both Responses Are Blocked by Anticholinergic Drugs

Abstract
The neurotoxin N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) produces neuropathology and clinical symptoms that resemble Parkinsonism in primates and humans. In mice it induces a long-lasting depletion of neostriatal 3,4-dihydroxyphenylethylamine (dopamine) content. Using the mouse, we found that MPTP induces a fall of dopamine and a rise of acetylcholine in the neostriatum. Both responses to MPTP can be blocked by prior treatment with atropine or trihexyphenidyl.

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