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  • Title: Enhancement of ouabain and calcium ionophore A23187 of outward transport of polyamines from lymphocytes.
    Author: Fulgosi B, Colombatto S, Grillo MA.
    Journal: Biol Chem Hoppe Seyler; 1991 Feb; 372(2):79-82. PubMed ID: 1859630.
    Abstract:
    Human lymphocytes in culture loaded with radioactive polyamines slowly release radioactivity into the medium. N1-Acetylspermidine is mostly released from spermidine and spermine. Both ouabain and calcium ionophore A23187 increase the outward transport, but by different mechanisms. Ouabain inhibits the acetylation of spermidine, and free spermidine is released, whereas A23187 increases both acetylation of spermidine and the efflux of N1-acetylspermidine.
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