Electrochemical detection of serotonin: A new approach
- PMID: 31715139
- DOI: 10.1016/j.cca.2019.10.028
Electrochemical detection of serotonin: A new approach
Abstract
Serotonin (5-hydroxytryptamine, 5-HT) is an important neurotransmitter which plays a significant role in various functions in the body, such as appetite, emotions, and autonomic functions. It is well known that biomarker 5-HT levels can be correlated to several diseases and disorders such as depression, anxiety, irritable bowel, and sleep trouble. Among various methods for detecting the 5-HT biomarker, electrochemical techniques have attracted great interest due to their low cost and ease of operation. However, sensitive and precise electrochemical detection of 5-HT levels is not possible using bare electrodes, thus requiring electrode modification. The present review aims to describe the different electroanalytical methods for 5-HT detection using various surface-modified electrodes such as glassy carbon, carbon fiber, diamond, graphite, and metal electrodes modified with conductive polymers. Perspectives and the modification of electrode surface using applied polymers for 5-HT detection have also been presented.
Keywords: Biomarker; Conductive polymers; Electrochemical sensing; Glassy carbon electrode; Polymer modification; Serotonin.
Copyright © 2019 Elsevier B.V. All rights reserved.
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