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  • Title: Repression of a lithium pump as a consequence of lithium ingestion by manic-depressive subjects.
    Author: Meltzer HL, Kassir S, Dunner DL, Fieve RR.
    Journal: Psychopharmacology (Berl); 1977 Oct 20; 54(2):113-8. PubMed ID: 412204.
    Abstract:
    The lithium pump in human erythrocyte membranes, which is responsible for extrusion of lithium against a concentration gradient, has been found to be reversibly repressed during periods of lithium carbonate administration. The pump activity of patients prior to lithium therapy is not different from controls. The onset of repression may require several days to several weeks and occurs at specific individual threshold levels of lithium carbonate dosage. Reactivation of the lithium pump occurs sometime after the dosage is discontinued. We postulate that repression of the lithium pump results from systemically available factors which alter membrane structure, and suggest that is such changes also occur in the central nervous system, they may provide insight into one means by which lithium produces its psychotropic affects.
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