Abstract：
:The effect of treatment with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) on juvenile (6-8 months), young adult (2-4 years) and aged (8-10 years) common marmosets were compared. Juvenile marmosets were more resistant to the actions of MPTP and required a greater cumulative dose over a longer period to induce the same degree of motor disability observed in older animals. Young adult and aged marmosets showed an equivalent motor recovery in the 4-5 weeks following cessation of MPTP treatment, but juvenile animals were less able to compensate for the motor impairments. Losses of putamen [3H]dopamine uptake and caudate nucleus dopamine content were equivalent in young adult and aged animals. However, juvenile animals showed a more marked degree of dopamine depletion and reduction in [3H]dopamine uptake. Histological analysis showed cell loss in the substantia nigra to be most prominent in juvenile animals although it was evident in all groups. No loss of cells in the locus coeruleus was apparent in any of the groups studied, and no intraneuronal eosinophilic inclusions were seen. Greater nigral cell loss and dopamine depletion were required in juvenile animals to impair motor function. The degree of behavioural recovery was less in juvenile animals than in young adult and aged marmosets. The extent of behavioural recovery appeared linked to the severity of cell loss and was not reduced in old age.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Rose S,Nomoto M,Jackson EA,Gibb WR,Jaehnig P,Jenner P,Marsden CDdoi
10.1016/0014-2999(93)90800-wsubject
Has Abstractpub_date
1993-01-12 00:00:00pages
177-85issue
2eissn
0014-2999issn
1879-0712pii
0014-2999(93)90800-Wjournal_volume
230pub_type
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