Evidence map›Paper›PMID 20024047›Full record

ArticleLab on a chip2010

Electrically evoking and electrochemically resolving quantal release on a microchip.

Gregory M Dittami, Richard D Rabbitt

Open access · greenAbstract read
In one paragraph

Article in Lab on a chip, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.6field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
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  3. Electrochemical measurement of quantal exocytosis using microchips.Pflugers Archiv : European journal of physiology · 2018
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Gregory M DittamiDepartment of Bioengineering, University of Utah, Salt Lake City, UT 84118, USA. dittami@eng.utah.edu
Richard D Rabbitt
University of Utah · US

Funding

Micro-Electric Impedance Spectroscopy of Hair CellsR01DC004928 · NIDCD · UNIVERSITY OF UTAH · PI RABBITT, RICHARD D · 2001 to 2009
$3.8M
NIDCD NIH HHS R01 DC004928NIDCD NIH HHS R01 DC04928
6 · The paper itself

Abstract

A microchip was applied to electrically depolarize rat pheochromocytoma (PC12) cells and to simultaneously detect exocytotic catecholamine release amperometrically. Results demonstrate exocytosis elicited by flowing cells through an electric field generated by a potentiostat circuit in a microchannel, as well as exocytosis triggered by application of an extracellular voltage pulse across. Electrical finite element model (FEM) analysis illustrated that larger cells experienced greater depolarizing excitation from the extracellular electric fields due to the smaller shunt path and higher resistance to current flow in the channel around the cell. Consistent with these simulations, data recorded from cell clusters and large cells exhibited increased release rates relative to data from the smaller cells. Overall, the system was capable of resolving single vesicle quantal release, in the zeptomole range, as well as the kinetics associated with the vesicle fusion process. Analysis of spike population statistics suggested detection of catecholamines from multiple release sites around the cells. The potential for such a device to be used in flow cytometry to evoke and detect exocytosis was demonstrated.

Indexed as

ExocytosisLab-On-A-Chip DevicesAnimalsCatecholaminesCell Culture TechniquesCell SizeElectrochemical TechniquesEquipment DesignMembrane PotentialsMicrochip Analytical ProceduresMicroelectrodesPatch-Clamp TechniquesPC12 CellsRatsCatecholamines

Identifiers

PMID20024047
PMCPMC3000936
OpenAlexW2095095727

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.