Cited by 5Electrochemical Analysis and ApplicationsNeuroscience and Neuropharmacology ResearchElectrochemical sensors and biosensors

Measurement of intact quantal packet of transmitters released from single nerve terminal by loose-patch amperometry

Chen, Peihua, Shen, Xuefeng, Zhao, Shuainan, Liu, Zili, Zhu, Qianwen, Zhu, Tao, Zhang, Shuli, Li, Yi +2 more·2021·Biosensors and Bioelectronics

Abstract

Neuronal information is majorly encoded chemically at synapses and the elementary unit of synaptic transmission is the contents of neurotransmitter released from single vesicle. However, the contents of quantal neurotransmitter have never been precisely estimated at synapses, which largely prevent our understanding the nature of quantal neurotransmitter release and its impact on neuronal information processing. In order to break through the technical bottleneck of precisely counting quantal neurotransmitter molecules, we developed a new approach in combination of electrophysiology and electrochemistry to measure intact quantal content of single vesicles. An etched submicro-carbon fiber electrode for electrochemical detection was designed to be enclosed in an electrophysiologically used glass pipette. The glass pipette allowed the electrochemical electrode to access the release site, and amperometric recordings were made within the enclosed space at the electrophysiological loose-patch mode. Our study showed that the intact quantal release could be successfully detected at the dopaminergic varicosities by this loose-patch amperometric measurement in real time with negligible leakage.

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Crossref · 10.1016/j.bios.2021.113143

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Authors
Chen, P., Shen, X., Zhao, S., Liu, Z., Zhu, Q., Zhu, T., Zhang, S., Li, Y., Mao, L., & Sun, J.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Southern University of Science and Technology (CN)
Corresponding author
  • Shen, Xuefeng
  • Sun, Jianyuan
Venue
Biosensors and Bioelectronics
Publisher
Elsevier BV
Published
2021-06
Volume
181
Pages
113143
ISSN
0956-5663 (ISSN-L)
OpenAlex
W3133933571
Cited by
5
References
38
Citations by year
2024: 1 · 2022: 3 · 2021: 1
FWCI
0.49
Type
journal article
Language
en
Open access
closed
Locations
  • Biosensors and Bioelectronics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Science and Technology of the People's Republic of China
  • Chinese Academy of Sciences
  • Chinese Academy of Sciences Youth Innovation Promotion Association
  • National Natural Science Foundation of China
  • National Natural Science Foundation of China-Guangdong Joint Fund
Topics
  • Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
Keywords
amperometry, synaptic transmission, neurotransmitter quantification
MeSH terms
Synaptic Transmission, Neurons, Synapses, Biosensing Techniques, Neurotransmitter Agents

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