Abstract

The effects of a β-adrenergic agonist and a cyclic AMP analogue on activation, activity, and termination of FMLP-stimulated superoxide anion production were investigated. Incubation with isoproterenol resulted in a 50% reduction in the maximal rate of superoxide production and a 3–4-fold increase in the rate of termination of superoxide production. Exposure to 1 mM dibutyryl cyclic AMP resulted in a 40% decrease in the maximal rate and a 3-fold increase in the rate of termination of FMLP-induced superoxide production. Neither agent had a significant effect on the lag time prior to superoxide anion generation.

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