Biochem/physiol Actions SB-328437 is a potent, selective CCR-3 antagonist (IC50 = 1.6 nM). The compound blockes CCR3 agonist-induced calcium mobilization in CCR3 expressing cells with the following IC50 values: eotaxin, 38 nM; eotaxin-2, 35 nM and MCP4, 20 nM. |