In Vivo Brain Glucose Measurements:  Differential Normal Pulse Voltammetry with Enzyme-Modified Carbon Fiber Microelectrodes

1996 ◽  
Vol 68 (24) ◽  
pp. 4358-4364 ◽  
Author(s):  
Larissa I. Netchiporouk ◽  
Nataliya F. Shram ◽  
Nicole Jaffrezic-Renault ◽  
Claude Martelet ◽  
Raymond Cespuglio
Keyword(s):  
Carbon Fiber ◽  
Brain Glucose ◽  
Pulse Voltammetry ◽  
Carbon Fiber Microelectrodes

scholarly journals Concomitant in Vivo Voltammetric and Electrophysiological Analysis Indicate that Nociceptin/Orphanin FQ Affects Dopamine and then Serotonin Activities in Brain Substancia Nigra.

2019 ◽  
Vol 2 (3) ◽  
pp. 1-9
Author(s):  
Francesco Crespi
Keyword(s):  
Carbon Fiber ◽  
Behavioral Inhibition ◽  
Inhibitory Action ◽  
Dopaminergic System ◽  
Differential Pulse ◽  
Orphanin Fq ◽  
Pulse Voltammetry ◽  
Carbon Fiber Microelectrodes ◽  
System Project

Nociceptin/orphanin-FQ (NOCI) together with its receptor NOP are widely expressed in cortical and subcortical motor areas and it is known that NOCI acts as an anxiolytic attenuating the behavioral inhibition of animals acutely exposed to stressful/anxiogenic conditions. Influence of NOCI upon the dopaminergic system has been observed in the ventral tegmental area and in the nucleus accumbens as well as an inhibitory action of NOCI is described upon serotoninergic mechanisms at cells and terminal levels. In particular, it is known that serotoninergic fibers from the raphe system project to the substancia nigra (SN) and that this modulation is behaviourally relevant. In the present work, the effect of exogenous NOCI injected into the SN upon DA and 5-HT levels have been analyzed by means of differential pulse voltammetry and nafion-carbon fiber microelectrodes. Electrophysiological monitoring of multicell activity was concomitantly performed with the same microsensor. It appeared that both levels of these biogenic amines were specularly altered, with possibly a driving influence of the DA activity upon the serotoninergic function(s).

scholarly journals In Vivo Ambient Serotonin Measurements at Carbon-Fiber Microelectrodes

2017 ◽  
Vol 89 (18) ◽  
pp. 9703-9711 ◽  
Author(s):  
Aya Abdalla ◽  
Christopher W. Atcherley ◽  
Pavithra Pathirathna ◽  
Srimal Samaranayake ◽  
Beidi Qiang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Carbon Fiber Microelectrodes

Ferricyanide-backfilled cylindrical carbon fiber microelectrodes for in vivo analysis with high stability and low polarized potential

The Analyst ◽  
2015 ◽  
Vol 140 (21) ◽  
pp. 7154-7159 ◽  
Author(s):  
Peipei Zhong ◽  
Ping Yu ◽  
Kai Wang ◽  
Jie Hao ◽  
Junjie Fei ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Stability ◽  
Carbon Fiber Microelectrode ◽  
In Vivo Analysis ◽  
Carbon Fiber Microelectrodes

A ferricyanide-backfilled cylindrical carbon fiber microelectrode of high stability and low polarized potential was fabricated and used for in vivo analysis.

Carbon Nanotube-Modified Carbon Fiber Microelectrodes for In Vivo Voltammetric Measurement of Ascorbic Acid in Rat Brain

2007 ◽  
Vol 79 (17) ◽  
pp. 6559-6565 ◽  
Author(s):  
Meining Zhang ◽  
Kun Liu ◽  
Ling Xiang ◽  
Yuqing Lin ◽  
Lei Su ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Rat Brain ◽  
Voltammetric Measurement ◽  
Carbon Fiber Microelectrodes

In vivo measurement of tubular fluid ferrocyanide with carbon-fiber microelectrodes

1987 ◽  
Vol 252 (6) ◽  
pp. F1158-F1166
Author(s):  
L. C. Moore ◽  
C. Clausen ◽  
E. F. Bowden ◽  
A. Birzgalis
Keyword(s):  
Carbon Fiber ◽  
Proximal Tubule ◽  
Linear Response ◽  
Ion Concentration ◽  
Data Sampling ◽  
Sampling Device ◽  
Carbon Fiber Microelectrode ◽  
Carbon Fiber Microelectrodes

Techniques to construct carbon-fiber microelectrodes and to measure ferrocyanide ion concentration in single nephrons are described. The measurement involves polarizing an inert carbon-fiber microelectrode 500 mV positive with respect to a Ag-AgCl reference, while measuring the faradic current produced by the oxidation of ferrocyanide. A carbon fiber (5-7 micron diam) is heat sealed into a glass micropipette that is then sharpened, silanized, and electrochemically pretreated to minimize electrode degradation by protein. Circuit diagrams for an inexpensive voltage clamp-current monitor and a data sampling device are presented. The electrodes show a linear response to changes in ferrocyanide concentration in large and very small (20 nl) volumes in vitro. The electrodes were used in an electrochemical microassay to determine tubular fluid-to-plasma ferrocyanide concentration ratios and nephron filtration rates with proximal micropuncture samples. The results show excellent agreement with paired determinations using [3H]inulin. In vivo proximal tubule perfusion experiments show a rapid linear response to changes in tubular fluid ferrocyanide concentration. These electrodes permit rapid quantitative measurements of ferrocyanide concentration and water transport in the proximal tubule and may be useful in other biological systems.

Platinized Aligned Carbon Nanotube-Sheathed Carbon Fiber Microelectrodes for In Vivo Amperometric Monitoring of Oxygen

2014 ◽  
Vol 86 (10) ◽  
pp. 5017-5023 ◽  
Author(s):  
Ling Xiang ◽  
Ping Yu ◽  
Meining Zhang ◽  
Jie Hao ◽  
Yuexiang Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Carbon Fiber Microelectrodes

scholarly journals Carbon-fiber microelectrodes for in vivo applications

The Analyst ◽  
2009 ◽  
Vol 134 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Megan L. Huffman ◽  
B. Jill Venton
Keyword(s):  
Carbon Fiber ◽  
Carbon Fiber Microelectrodes

In Vivo Voltammetric Detection of Rat Brain Lactate with Carbon Fiber Microelectrodes Coated with Lactate Oxidase

1998 ◽  
Vol 70 (13) ◽  
pp. 2618-2622 ◽  
Author(s):  
Nataliya F. Shram ◽  
Larissa I. Netchiporouk ◽  
Claude Martelet ◽  
Nicole Jaffrezic-Renault ◽  
Chantal Bonnet ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Rat Brain ◽  
Lactate Oxidase ◽  
Voltammetric Detection ◽  
Carbon Fiber Microelectrodes ◽  
Brain Lactate
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