A transient rise in cyclic AMP levels following chemotactic stimulation of neutrophil granulocytes.

A short transient rise of cyclic AMP is observed within 1 minute after primary stimulation of neutrophils with chemotactic serum peptides containing classical anaphylatoxin (CAT). A second administration of these peptides after two minutes failed to produce a second peak of cAMP. Human serum albumin (HSA) which has chemokinetic but no chemotactic activities did not change cAMP levels. There was no significant change in cGMP levels within 1 minute following stimulation of rabbit neutrophils with chemotactic peptides or HSA.