Cyclic ADP-ribose ammonium (cADPR ammonium) is a potent second messenger for calcium mobilization that is synthesized from NAD by an ADP-ribosyl cyclase. Cyclic ADP-ribose ammonium increases cytosolic calcium mainly by Ryanodine receptor-mediated release from endoplasmic reticulum and also by extracellular influx through the opening of TRPM2 channels.
体外研究
cADPR (20 nM) elicits a large rapid Ca release in sea urchin eggs homogenates.
cADPR (100 µM; 10 min) induces a sustained elevation of intracellular calcium concentration in a subset (64%) of cultured astrocytes.
cADPR (100 µM) and heat (35-38.5 ℃) stimulates oxytocin OT release from the isolated hypothalami of male mice in culture.
体内研究
cADPR (100 µM; push-pull type of brain microperfusion) elevats OT concentrations in ordinate or subordinate mice.
运输条件
Room temperature in continental US; may vary elsewhere.