Section 10
Chapter 9,075

NMDA- and MK801-induced changes in dopamine release are attenuated in kainic acid-lesioned nucleus accumbens of conscious rats: An in vivo microdialysis study

Yoshida, M.; Yokoo, H.; Mizoguchi, K.; Tanaka, T.; Emoto, H.; Tanaka, M.

Brain Research 786(1-2): 226-229


ISSN/ISBN: 0006-8993
PMID: 9555028
DOI: 10.1016/s0006-8993(97)00694-x
Accession: 009074453

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Local application of N-methyl-d-aspartate (NMDA) and a NMDA receptor antagonist, MK801 through the dialysis membrane into the nucleus accumbens (NAC) caused a significant decrease and increase in extracellular dopamine (DA) in the NAC of conscious rats, respectively. These neurochemical changes were significantly smaller in the kainic acid (KA)-lesioned NAC than in the intact NAC. These findings show that locally applied NMDA and MK801 into the NAC modulate DA release mainly through indirect mechanism involving putative GABA neuron of the NAC.

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