Title : Glucocorticoid suppression of human lymphocyte DNA synthesis: influence of phytohemagglutinin concentration.

Pub. Date : 1980 Apr

PMID : 7359015






6 Functional Relationships(s)
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1 We have found that the position on the PHA dose-response curve that is studied is the most important determinant of whether cortisol inhibits 3H-thymidine incorporation into lymphocyte DNA. Tritium lamin B receptor Homo sapiens
2 We have found that the position on the PHA dose-response curve that is studied is the most important determinant of whether cortisol inhibits 3H-thymidine incorporation into lymphocyte DNA. Thymidine lamin B receptor Homo sapiens
3 When monocytes were reduced from 14% to 1.4%, cortisol (5 microM) caused a 30% reduction in thymidine incorporation in cultures stimulated by 0.6 to 1.2 microgram/ml PHA. Hydrocortisone lamin B receptor Homo sapiens
4 Much greater cortisol suppression of thymidine incorporation occurred if the concentration of PHA was reduced. Thymidine lamin B receptor Homo sapiens
5 For example, reduction of the PHA concentration from 1.2 to 0.075 microgram/ml resulted in an increase in suppression by 5 microM cortisol from 5% to 90% even in the presence of 14% monocytes. Hydrocortisone lamin B receptor Homo sapiens
6 These data indicate that the suppressive effects of glucocorticoids on blastogenesis and thymidine incorporation in vitro depend principally on the concentration of PHA used to stimulate blastogenesis and secondarily on the proportion of monocytes in the culture system. Thymidine lamin B receptor Homo sapiens