The effect of the non-steroidal anti-inflammatory drug (NSAID) tiaprofenic acid on different human immune parameters was investigated in vitro or following in vivo administration in healthy adult volunteers. Results from the in vitro study demonstrated an increased mitogen-induced blastogenesis and interleukin 2 (IL-2) production together with a reduced polyclonal immunoglobulin (Ig) secretion in the presence of the drug. Results from the ex vivo study showed that treatment with tiaprofenic acid had no significant effects on the immune parameters investigated, i.e. unstimulated and mitogen-induced proliferation and IL-2 production, spontaneous and stimulated Ig synthesis, lymphocyte subpopulations, serum Ig and complement levels.
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