“In the presence of 1 mM melatonin , stimulation of cells with CCK-8 resulted in a smaller [Ca2+]c peak response, a faster rate of decay of [Ca2+]c and lower values for the steady state of [Ca2+]c, compared with the effect of CCK-8 alone.”
“ Melatonin also reduced the oscillatory pattern of Ca2+ mobilization evoked by a physiological concentration of CCK-8 (20 pM), and completely inhibited Ca2+ mobilization induced by 10 pM CCK-8.”
“Pre-incubation of cells with melatonin (1 μM–1 mM) significantly attenuated enzyme secretion in response to high concentrations of CCK-8.”