흰쥐의 복강비만세포에서 ATP와 Compound 48/87에 의한 Histamine유리에 미치는 Econazole의 영향

Effect of Econazole on ATP- and Compound 48/80-Induced Histamine Release in Rat Peritoneal Mast Cells

3 investigate the different mechanism between ATP and compound 48/80 (C48/80)-induced histamine release, we observed effects of calcium antagonists in histamine release of rat peritoneal mast cells.Verapamil and diltiazgem (voltage-dependent calcium channel blocker) and TMB-8 (a blocker of intracellular calcium release) significantly inhibited ATP-induced histamine release, but did not inhibit C48/80 induced histamine release. Econazole (a blocker of receptor-operated calcium channel) dose-dependently inhibited both and C48/80-inducted histamine release,but inhibitory effect of econarole in ATP-induced histamine release was more potent than that in C48/80-induced histamine. EGTA dote-dependently inhibited ATP and C48/80-induced histamine release, and C48/80-induced histamine release was slightly inhibited by high concentrations (>2 mM) of EGTA. These results suggest that ATP·induced histamine release is related to both intraoellular calcium release and extracellular calcium influx via voltage-dependent calcium channel and receptor-operated calcium channel. C48/80-induced histamine release is related to extracellular calcium influx, specially recetor-operated calcium channel rather tllan voltage-dependent calcium channel.