Direct observation of epinephrine and norepinephrine cosecretion from individual adrenal medullary chromaffin cells

Autor: Jeffrey A. Jankowski, Edward L. Ciolkowski, James W. Jorgenson, Bruce R. Cooper, R. Mark Wightman
Rok vydání: 1992
Předmět:
Zdroj: Journal of the American Chemical Society. 114:2815-2821
ISSN: 1520-5126
0002-7863
DOI: 10.1021/ja00034a009
Popis: Cyclic voltammetry at Nafion-coated carbon fiber microclectrodes has been used to monitor directly the release of catecholamines from individual adrenal medullary chromaffin cells and to identify the released catecholamine as epinephrine or norepinephrine. The cultured cells were induced to secrete by exposure to 100 μM nicotine, a recognized secretagogue at these cells. Each cell contains on average 167 fmol of catecholamines, and the secretion event involves only a small per of the total stores for a time interval of less than 60 s
Databáze: OpenAIRE