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  • Title: The effect of apomorphine, amantadine and dimethylaminoadamantane on the level of cyclic AMP in the rat striatum.
    Author: Janiec W, Piekarska T, Szczypior M, Misterkiewicz E.
    Journal: Pol J Pharmacol Pharm; 1977; 29(2):93-9. PubMed ID: 193093.
    Abstract:
    The content of cyclic AMP (cAMP) in the slices of rat striatum and cerebral cortex was tested after incubation with various concentrations (10(-6)--10(4) M) of dopamine (DA), apomorphine (APM), amantadine (AMD), and dimethylaminoadamatane (DMAD), and incubation with DA, AMD and DMAD in combination with KCl (43 mM) or haloperidol (HP) (10(-5) M). APM, AMD, and DMAD act synergistically with DA, elevate the c-AMP content in the striatum less than DA dose and do not affect the level c-AMP in the slices of cerebral cortex. KCl potentiated the action of DA, but inhibited that of APM, AMD, and DMAD. HP was most effective in blocking the action of DA, and blocked more weakly the action of APM AMD, DMAD, and the action of DA, APM, AMD, and DMAD in the presence of high concentration of KCl. The results indicate that APM, AMD, and DMAD, are less specific stimulants of central dopaminergic structures than DA, and that the increase of c-AMP content in the slices of rat striatum caused by APM, AMD, and DMAD is due to depolarizing action of these compounds.
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