Neuroscience Letters 1987-03-20

4-phenylpyridine and three other analogues of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine lack dopaminergic nigrostriatal neurotoxicity in mice and marmosets.

T L Perry, K Jones, S Hansen, R A Wall

Index: Neurosci. Lett. 75(1) , 65-70, (1987)

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Abstract

C57 black mice were injected repeatedly with maximal tolerated doses of 2 chemical analogues of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP); 4-phenylpyridine and 4-phenyl-1,2,3,6-tetrahydropyridine. Although both compounds were clearly acutely toxic to mice, neither caused any reduction in striatal dopamine content after chronic exposure. Two MPTP analogues which may be formed endogenously during the metabolism of brain monoamines, 2-methyl-1,2,3,4-tetrahydroisoquinoline and 2-methyl-1,2,3,4-tetrahydro-beta-carboline, were injected repeatedly into common marmosets. Again, although both compounds appeared highly toxic, neither caused any reduction in striatal dopamine content. It appears unlikely that any of these 4 MPTP analogues causes idiopathic Parkinson's disease.

Related Compounds

  • 4-phenyl-1,2,3,6-t...
  • 4-Phenylpyridine

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