In the absence of extracellular Ca2+ , DAP evokes exocytotic release of [3H]NE from synaptic vesicles through liberation of internal Ca2+ from inositol 1, 4, 5-trisphosphate-sensitive Ca2+ stores.

• 在胞外无钙条件下,DAP通过IP_3-敏感的Ca~(2+)储备库释放Ca~(2+),从而诱发囊泡内的去甲肾上腺素释放。