Abstract
Tissue distribution of selegiline including N-methyl-14C-selegiline was studied with three different techniques. Whole body autoradiography of labeled selegiline in rats completed the former results obtained in mice. Counting radioactivity by liquid scintillation method in various body compartments gave an in-depth numerical estimation of distribution, while RP-HPLC determination of selegiline determined the fate of intact, non-metabolized parent compound. Whole body autoradiography following 15 and 60min of intraperitoneal application of N-methyl-14C-selegiline verified definite and time-dependent blood–brain penetration of selegiline. Quantitative determination of tissue concentrations by liquid scintillation and RP-HPLC methods following 5, 15, 60 and 180min of intraperitoneal administration of selegiline unanimously verified both blood–brain and blood–testis penetration of the compound through the barrier.
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