%0 Journal Article %T Involvement of different protein kinases and phospholipases A2 in phorbol ester (TPA)-induced arachidonic acid liberation in bovine platelets %A M. Lehr %A K. Griessbach %J Mediators of Inflammation %D 2000 %I Hindawi Publishing Corporation %R 10.1080/09629350050024357 %X The effect of various phospholipase A2 and protein kinase inhibitors on the arachidonic acid liberation in bovine platelets induced by the protein kinase activator 12-O-tetradecanoylphorbol–13-acetate (TPA) was studied. TPA stimulates arachidonic acid release mainly by activating group IV cytosolic PLA2 (cPLA2), since inhibitors of this enzyme markedly inhibited arachidonic acid formation. However, group VI Ca2 %U http://www.hindawi.com/journals/mi/2000/198725/abs/