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  • Title: Fluorimetric assay for ornithine decarboxylase by high-performance liquid chromatography.
    Author: Haraguchi K, Kai M, Kohashi K, Ohkura Y.
    Journal: J Chromatogr; 1980 Dec 05; 202(1):107-12. PubMed ID: 7217244.
    Abstract:
    A highly sensitive method for the assay of ornithine decarboxylase in sample solutions prepared from rat tissue homogenate is described which employs high-performance liquid chromatography with fluorescence detection. Putrescine formed from ornithine under the optimal conditions for the enzyme reaction is treated by Cellex P column chromatography for clean-up and converted into the fluorescamine derivative in the presence of cupric ion which inhibits the reaction of interfering amines with fluorescamine. The derivative is separated by reversed-phase chromatography on LiChrosorb RP-18 with linear gradient elution. The lower limit of detection for putrescine formed enzymatically is 5 pmol.
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