O. Keren et al., DUAL REGULATION BY OPIOIDS OF H-3 NOREPINEPHRINE RELEASE IN THE HUMANNEUROBLASTOMA CELL-LINE SK-N-SH, Brain research, 646(2), 1994, pp. 319-323
Depolarization-evoked H-3-norepinephrine release from SK-N-SH cells wa
s found to be regulated by opioid ligands. Opioids excerted either inh
ibition or augmentation of H-3-norepinephrine release. Both effects we
re mediated by opioid receptors. In addition, a nonopioid inhibitory e
ffect of opiates on release was observed. The SK-N-SH cell-line provid
es a suitable model for studying the various mechanisms underlying the
opioid regulatory pathways within single cells.