Abstract
The effect of hyperlipaemic serum on mitogen-induced T lymphocyte proliferation was investigated with cynomolgus monkeys. The mitogen-induced blastogenesis was remarkably inhibited when either hyperlipaemic or normal monkey lymphocytes were incubated with hyperlipaemic sera. Hyperlipaemic serum also inhibited ConA-induced interleukin 2 (IL-2) production as well as IL-2 receptor (IL-2R) expression of normal monkey lymphocytes. On the other hand, it showed slight inhibition of T-cell proliferation induced by adding recombinant human IL-2 to IL-2R-positive normal monkey lymphocytes. These results indicate that hyperlipaemic serum inhibited an early stage of T-cell autocrine activation pathway including IL-2 production and IL-2R expression.
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