“These results suggest that vinblastine interacts non-specifically with the cell membrane to cause reversible inhibition of arachidonic acid liberation by phospholipase A2 and Ca2+ influx and thereby aggregation through physical perturbation of membrane lipid bilayer, independent of the activity to disassemble platelet microtubule system.”
“Within the concentration ranges that inhibited collagen-induced aggregation, vinblastine also suppressed reversibly Ca2+ influx and arachidonic acid liberation from membrane phospholipids by phospholipase A2.”