Evidence map›Paper›PMID 19464519›Full record

ArticleJournal of neuroscience methods2009

Measurement of plasmalemmal dopamine transport, vesicular dopamine transport, and K(+)-stimulated dopamine release in frozen rat brain tissue.

Trent J Volz, Sarah J Farnsworth, Glen R Hanson, Annette E Fleckenstein

Open access · greenAbstract read
In one paragraph

Article in Journal of neuroscience methods, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.6field-weighted citation impact, top 37% 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

3 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
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

4 authors at 1 institution in 1 country.

Trent J VolzDepartment of Pharmacology and Toxicology, University of Utah, 30 South 2000 East, Room 201, Salt Lake City, UT 84112, United States.
Sarah J Farnsworth
Glen R Hanson
Annette E Fleckenstein
University of Utah · US

Funding

Vmat AND NEUROTOXICITYP01DA013367 · NIDA · UNIVERSITY OF UTAH · PI HANSON, GLEN R · 2001 to 2012
$10.1M
DRUG ABUSE &REGULATORY ENZYMES OF BIOGENIC AMINESR01DA000869 · NIDA · UNIVERSITY OF UTAH · PI FLECKENSTEIN, ANNETTE · 1985 to 2010
$2.9M
Psychostimulants and Monoamine TransportersR01DA011389 · NIDA · UNIVERSITY OF UTAH · PI FLECKENSTEIN, ANNETTE · 2003 to 2012
$2.5M
NEUROCHEMICAL ALTERATIONS BY DESIGNER DRUGSR01DA004222 · NIDA · UNIVERSITY OF UTAH · PI HANSON, GLEN R · 1986 to 2010
$2.0M
K02 ApplicationK02DA019447 · NIDA · UNIVERSITY OF UTAH · PI FLECKENSTEIN, ANNETTE · 2005 to 2014
$1.3M
Pharmacology and Toxicology of Methamphetamine Abuse (K05 DA00378)K05DA000378 · NIDA · UNIVERSITY OF UTAH · PI HANSON, GLEN R · 1998 to 2011
$1.2M
METHAMPHETAMINE AND DOPAMINE TRANSPORTERSR29DA011389 · NIDA · UNIVERSITY OF UTAH · PI FLECKENSTEIN, ANNETTE · 1998 to 2002
$329k
NIDA NIH HHS DA 00378NIDA NIH HHS DA 00869NIDA NIH HHS DA 019447NIDA NIH HHS DA 04222NIDA NIH HHS DA 11389NIDA NIH HHS DA 13367NIDA NIH HHS K02 DA019447NIDA NIH HHS K05 DA000378NIDA NIH HHS P01 DA013367NIDA NIH HHS R01 DA000869NIDA NIH HHS R01 DA004222NIDA NIH HHS R01 DA011389NIDA NIH HHS R29 DA011389
6 · The paper itself

Abstract

This report describes experiments designed to (1) establish the specificity of dopamine (DA) transporter (DAT)-mediated plasmalemmal DA transport, vesicular monoamine transporter-2 (VMAT-2)-mediated vesicular DA transport, and K+-stimulated DA release in samples prepared from frozen rat striata, and (2) characterize the time-course of the effects of freezing on these processes. The procedure described herein uses a simple method of freezing brain tissue (first cooling in ice-cold buffer and then freezing at -80 degrees C) that allows for the storage of rat striata followed by the assay of DA transport and K+-stimulated DA release using rotating disk electrode voltammetry. Plasmalemmal DA transport into samples prepared from frozen striata was blocked by the DAT inhibitor, cocaine, and vesicular DA transport was blocked by the VMAT-2 inhibitor, dihydrotetrabenazine. Additionally, K+-stimulated DA release was Ca+2-dependent. Freezing decreases DAT-mediated DA transport, VMAT-2-mediated DA transport, and K+-stimulated DA release. However activity is still measurable even after 3 weeks of storage. These results suggest that rat striata retain some DA transport and DA release activity even when stored frozen for a few weeks. Frozen storage of rat striata may thus be valuable for experiments requiring lengthy assays, the accumulation of material, or the transport of samples from one laboratory to another for analysis. These results may also be applicable to the study of frozen human brain tissue.

Indexed as

AnimalsBody TemperatureBrainCell MembraneCryopreservationDopamineDopamine Plasma Membrane Transport ProteinsDopamine Uptake InhibitorsElectrochemical TechniquesMaleNeurochemistryPostmortem ChangesPotassium CompoundsPresynaptic TerminalsRatsRats, Sprague-DawleydihydrotetrabenazineDopamineDopamine Plasma Membrane Transport ProteinsDopamine Uptake InhibitorsPotassium CompoundsSlc18a2 protein, ratTetrabenazineVesicular Monoamine Transport Proteins

Identifiers

PMID19464519
PMCPMC2941190
OpenAlexW2093202616

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.