Changes in blood-brain permeability resulting from d-amphetamine, 6-hydroxydopamine and pimozide measured by a new technique |
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Authors: | U Braun Gisela Braun Th Sargent III |
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Institution: | (1) Donner Laboratory, University of California, 94720 Berkeley, California, USA;(2) Present address: Pharmakologisches Institut der Universität, D-53 Bonn, FRG |
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Abstract: | Summary A new technique is described for measurement of diffusion across the blood-brain barrier using intraventricularly administered68Ga-EDTA, and determining loss from the brain with a scintillation camera. Repeated injections via permanent cannulas showed that the diffusion half-time was reduced to 50% of control values after intraventricular d-amphetamine and 6-hydroxydopamine; pimozide had no effect.Acknowledgment. This work was supported by the Division of Biomedical and Environmental Research of the US Department of Energy, and the Deutsche Forschungsgemeinschaft. |
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