Effect of helium-oxygen pressure on dopamine detected in vivo in the striatum of hamsters |
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Authors: | Forni, C. Rostain, J. C. |
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Affiliation: | Unité de Neurochimie, Centre National de la Recherche Scientifique, Marseille, France. |
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Abstract: | Free-moving hamsters chronically implanted in the striatum with carbon multifiber electrodes selective to dopamine were compressed in a helium-oxygen breathing mixture to 81 bars. Under these conditions, there was an increase in the electrochemical responses recorded from the carbon electrode by differential pulse voltammetry, which occurred during the compression and disappeared when the animals returned to the surface. This change was related to an increase in extracellular dopamine levels induced by the increase in pressure of the helium-oxygen mixture. |
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