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- W1972655846 abstract "The aim of this study was to characterize interactions between striatal kainate (KA) receptors and dopamine (DA) release using in vivo microdialysis. After insertion of a microdialysis probe and establishment of baseline DA release, each preparation was standardized with a pulse of an iso-osmotic solution of 100 mM KCl in Ringer's solution. DA release following pharmacological manipulation was compared to potassium-induced release and expressed as a percent value. In one group of animals, KA (12.5 mM in Ringer's solution) was administered via the microdialysis probe in 2, 3, 5 or 10 min pulses 30 min following standardization with potassium resulting in release of DA which was 15.7 +/- 3.9, 30.3 +/- 11.3, 67.5 +/- 15.0 and 92.9 +/- 19.8% of potassium-induced DA release, respectively. Perfusion of CdCl2 (0.6 mM in Ringer's solution) 30-45 min prior to a 10 min KA pulse significantly reduced KA-induced DA release compared to control values. Intrastriatal administration of kynurenate (Kyn) attenuated KA-induced DA release in a dose-dependent manner. Levels of DA metabolites in striatal perfusates were significantly reduced following KA administration. This effect was partially reversed by cadmium pretreatment but not affected by Kyn pretreatment. Findings of this study indicate that KA induces striatal DA release in a dose-dependent manner, and this effect is at least partially dependent upon activation of calcium channels. Results also indicate dose-dependent inhibition of KA-induced striatal DA release by the excitatory amino acid receptor antagonist, Kyn, suggesting that this compound interacts with striatal KA receptors and that these receptors are involved with modulating striatal DA release in vivo." @default.
- W1972655846 created "2016-06-24" @default.
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- W1972655846 date "1991-03-01" @default.
- W1972655846 modified "2023-09-24" @default.
- W1972655846 title "Partial characterization of kainic acid-induced striatal dopamine release using in vivo microdialysis" @default.
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- W1972655846 doi "https://doi.org/10.1016/0006-8993(91)91049-7" @default.
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