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  • Title: Effect of lithium and of other drugs used in the treatment of manic illness on the cation-transporting properties of Na+,K+-ATPase in mouse brain synaptosomes.
    Author: Wood AJ, Elphick M, Grahame-Smith DG.
    Journal: J Neurochem; 1989 Apr; 52(4):1042-9. PubMed ID: 2538559.
    Abstract:
    We have developed and used a novel technique to investigate the effects of lithium and other psychotropic drugs on the cation-transporting properties of the sodium- and potassium-activated ATPase enzyme (Na+,K+-ATPase) in intact synaptosomes. Rubidium-86 uptake into intact synaptosomes is an active process and is inhibited by approximately 75% in the presence of the Na+,K+-ATPase inhibitor acetylstrophanthidin. In vitro addition of lithium to synaptosomes prepared from untreated mice causes a progressive inhibition of acetylstrophanthidin-sensitive 86Rb uptake, but only at concentrations higher than the clinical therapeutic range. However, pretreatment of mice for 14 days in vivo with lithium, carbamazepine, and haloperidol, but not phenytoin, causes a significant stimulation of 86Rb uptake into synaptosomes via Na+,K+-ATPase.
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