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Updated: Aug 26, 2025

Monitoring the Effect of Osmotic Stress on Secretory Vesicles and Exocytosis
Published on: February 19, 2018
Vesicle Collision Protocols for the Study of Quantum Size and Exocytotic Fraction Released
Soodabeh Majdi1, Alex S Lima1, Andrew G Ewing2
1Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden.
Abstract:
We review the methods of vesicle impact electrochemical cytometry, intracellular impact electrochemical cytometry, and single cell amperometry and their application to measuring the storage of neurotransmitters in cellular vesicles. We provide protocols to measure vesicle content, the release of catecholamines, and from there the fraction of transmitter released in each exocytosis event. The focus here has been a combination of methods to evaluate factors related to neuronal function at the cellular level and implications in, for example, cognition.
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