Ao. Muck et al., DOES MELATONIN AFFECT CALCIUM INFLUX IN HUMAN AORTIC SMOOTH-MUSCLE CELLS AND ESTRADIOL-MEDIATED CALCIUM ANTAGONISM, Journal of pineal research, 20(3), 1996, pp. 145-147
The pineal hormone melatonin showed no effect on voltage-gated calcium
channels in cultured human aortic smooth muscle cells, In combination
with estradiol, which blocked calcium channels, melatonin did not ant
agonize the effect of estradiol. It is concluded that melatonin seems
to have different effects on voltage-gated calcium channels of diverge
nt cell types since the positive action of melatonin previously observ
ed on rat cardiac membranes by other authors could not be seen in the
present investigations with human vascular smooth muscle cells.