Effects of B Subunit of Cholera Toxin on Histamine Release from Rat Peritoneal Mast Cells

摘要

We studied the effects of B subunit of cholera toxin (CTB) on secretagogue-induced histamine release from rat peritoneal mast cells. CTB inhibited the release of histamine in response to compound 48/80, but not in response to mastoparan, substance P, concanavalin A or ionophore A23187. The results suggest that CTB can be used as a tool for studying the cellular events involved in histamine release from mast cells.