PRIMING WITH L-DOPA DIFFERENTLY AFFECTS DYNORPHIN AND SUBSTANCE-P MESSENGER-RNA LEVELS IN THE STRIATUM OF 6-HYDROXYDOPAMINE-LESIONED RATS AFTER CHALLENGE WITH DOPAMINE D1-RECEPTOR AGONIST
Sv. Vandewitte et al., PRIMING WITH L-DOPA DIFFERENTLY AFFECTS DYNORPHIN AND SUBSTANCE-P MESSENGER-RNA LEVELS IN THE STRIATUM OF 6-HYDROXYDOPAMINE-LESIONED RATS AFTER CHALLENGE WITH DOPAMINE D1-RECEPTOR AGONIST, Molecular brain research, 61(1-2), 1998, pp. 219-223
In unilaterally 6-hydroxydopamine-lesioned rats, potentiation of D1-ag
onist-induced turning behavior by priming with L-DOPA was correlated w
ith changes in striatal neuropeptide mRNA levels. In non-primed rats,
administration of the D1-agonist SKF-38393 markedly increased dynorphi
n and substance P mRNA levels in the lesioned striatum. Priming with L
-DOPA dissociated the response of the two neuropeptides to the D1-agon
ist, with higher dynorphin and reduced substance P mRNA levels. (C) 19
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