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  • Title: Inhibition of human lymphocyte transformation by two aryloxyalkylamidines.
    Author: Trist DG, Weatherall M.
    Journal: J Pharm Pharmacol; 1982 Feb; 34(2):97-101. PubMed ID: 6121888.
    Abstract:
    The incorporation of [3H]thymidine into human lymphocytes stimulated by phytohaemagglutinin (PHA) was inhibited by anilino-N-2-m-chlorophenoxypropylacetamidine (501C) and xylamidine. These amidines antagonize 5-HT, but 5-HT did not alter [3H]thymidine incorporation. 501C inhibited PHA-induced lymphocyte transformation as observed by [3H]thymidine incorporation, [3H]uridine incorporation, [3H]leucine incorporation, DNA content, potassium content, and histological examination. 501C also inhibited increased [3H]thymidine incorporation in human mixed lymphocyte cultures. The IC50 of 501C for inhibition of these processes lay between 4 and 8 microM. When added late in culture (after 6-8 h) 501C was less effective. Possible mechanisms by which 501C inhibits transformation are discussed.
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