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Dopamine Neurons Grafted Unilaterally to the Nucleus Accumbens Affect Drug-induced Circling and Locomotion by P. Brundin; R. E. Strecker; E. Londos; A. Björklund is a Neuroscience article available to read on EtoBox.

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The purpose of the present study was to investigate the amplifying function of the nucleus accumbens septi region (NAS) in 6-hydroxydopamine (6-OHDA)-induced rotational behaviour by implanting fetal dopamine (DA)-rich mesencephalic cell suspensions unilaterally in the NAS of rats previously subjected to combined mesostriatal (MS) and NAS 6-OHDA lesions. First, all the rats received a unilateral 6-OHDA lesion of the ascending MS DA pathway, which produced an amphetamine-induced rotational asymmetry towards the lesioned side. In a second step, the rats received a local bilateral 6-OHDA lesion of the NAS which, as previously shown, caused a significant attenuation of the amphetamine-induced locomotor (1.5 mg/kg) and rotational (5 mg/kg) behaviour. Finally, some of these MS + NAS lesioned rats received a unilateral mesencephalic DA graft into the NAS ipsilateral to the original MS lesion. The unilateral DA-rich grafts in the NAS significantly elevated the amphetamine-induced locomotion and ipsilateral circling (opposite to the direction of rotation produced when a graft is placed in the ipsilateral caudate-putamen), suggesting that the NAS plays only an amplifier role in locomotor beha

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Author

P. Brundin; R. E. Strecker; E. Londos; A. Björklund

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0014-4819)

Published

1986

Language

EN

Field

Neuroscience (Life Sciences)