The effects of uremic serum and 3'-5' cyclic AMP on blastogenesis of normal lymphocytes.
Phytohemagglutinin (PHA) induced lymphocyte blast transformation is impaired both in uremic lymphocytes and in normal lymphocytes exposed to uremic serum. Cyclic AMP is known to inhibit blast transformation in normal and uremic lymphocytes. This investigation was undertaken to assess quantitatively the effects of uremic serum and cyclic AMP on blastogenesis of normal lymphocytes. Uremic serum or cyclic AMP significantly inhibited blast transformation of normal lymphocytes. These effects were statistically similar and cumulative. We conclude that the inhibition imposed by uremic serum on normal lymphocyte blastogenesis is predominantly mediated by a mechanism(s) different from cyclic AMP.
D002478:Cells, Cultured; D000242:Cyclic AMP / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008213:Lymphocyte Activation / Q000187:drug effects*; D008297:Male; D010835:Phytohemagglutinins / Q000494:pharmacology; D013936:Thymidine / Q000378:metabolism; D014511:Uremia / Q000097:blood*
D010835:Phytohemagglutinins; D000242:Cyclic AMP; D013936:Thymidine