Evidence map›Paper›PMID 20051266›Full record

ReviewMethods (San Diego, Calif.)2010

Using fluorometry and ion-sensitive microelectrodes to study the functional expression of heterologously-expressed ion channels and transporters in Xenopus oocytes.

Raif Musa-Aziz, Walter F Boron, Mark D Parker

Erratum issuedOpen access · greenAbstract readReview
In one paragraph

Review in Methods (San Diego, Calif.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

35 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Mechanism of COThe Journal of physiology · 2026
    Article
  3. Article
  4. Article
  5. The "www" ofMembranes · 2022
    Review
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  17. Biology open · 2018
    Article
  18. Article
  19. Article
  20. A novel mutant NaThe Journal of physiology · 2016
    Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

3 authors at 2 institutions in 2 countries.

Raif Musa-AzizDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Walter F Boron
Mark D Parker
Case Western Reserve University · USUniversidade de São Paulo · BR

Funding

PH REGULATION OF EXCITABLE INVERTEBRATE CELLSR01NS018400 · NINDS · YALE UNIVERSITY · PI BORON, WALTER F · 1985 to 2012
$5.1M
Physiology of Electrogenic Na/HCO3 CotransportersR37DK030344 · NIDDK · YALE UNIVERSITY · PI BORON, WALTER F · 2002 to 2011
$3.5M
NIDDK NIH HHS R37 DK030344NINDS NIH HHS R01 NS018400
6 · The paper itself

Abstract

The Xenopus laevis oocyte is a model system for the electrophysiological study of exogenous ion transporters. Three main reasons make the oocyte suitable for this purpose: (a) it has a large cell size (approximately 1mm diameter), (b) it has an established capacity to produce-from microinjected mRNAs or cRNAs-exogenous ion transporters with close-to-physiological post-translational modifications and actions, and (c) its membranes contain endogenous ion-transport activities which are usually smaller in magnitude than the activities of exogenously-expressed ion transporters. The expression of ion transporters as green fluorescent protein fusions allows the fluorometric assay of transporter yield in living oocytes. Monitoring of transporter-mediated movement of ions such as Cl(-), H(+) (and hence base equivalents like OH(-) and HCO(3)(-)), K(+), and Na(+) is achieved by positioning the tips of ion-sensitive microelectrodes inside the oocyte and/or at the surface of the oocyte plasma membrane. The use of ion-sensitive electrodes is critical for studying net ion-movements mediated by electroneutral transporters. The combined use of fluorometry and electrophysiology expedites transporter study by allowing measurement of transporter yield prior to electrophysiological study and correlation of relative transporter yield with transport rates.

Indexed as

AnimalsBiological TransportCalibrationCell MembraneElectrophysiologyFluorometryGreen Fluorescent ProteinsHumansIon ChannelsIonsMicroelectrodesOocytesRNA, ComplementaryRNA, MessengerXenopus laevisGreen Fluorescent ProteinsIon ChannelsIonsRNA, ComplementaryRNA, Messenger

Identifiers

PMID20051266
PMCPMC2905798
OpenAlexW1990158705

What OpenQuestion holds

Textmetadata
LicenceTDM
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.