Evidence map›Paper›PMID 19726659›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2009

Robust pacemaking in substantia nigra dopaminergic neurons.

Jaime N Guzman, Javier Sánchez-Padilla, C Savio Chan, D James Surmeier

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 239 papers.

0numbers the graph read from it
0cells of the map it votes in
239citing papers in PubMed
12.0field-weighted citation impact, top 1% 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

239 citing papers in PubMed, 411 citations in OpenAlex.

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179 more citing papers are in PubMed but not listed here.

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.

Jaime N GuzmanDepartment of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA.
Javier Sánchez-Padilla
C Savio Chan
D James Surmeier
Northwestern University · US

Funding

SYNAPTIC CONTROLOF PALLIDAL ACTIVITYP50NS047085 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SURMEIER, DALTON JAMES · 2003 to 2018
$19.2M
NINDS NIH HHS NS047085NINDS NIH HHS P50 NS047085
6 · The paper itself

Abstract

Dopaminergic neurons of the substantia nigra pars compacta are autonomous pacemakers. This activity is responsible for the sustained release of dopamine necessary for the proper functioning of target structures, such as the striatum. Somatodendritic L-type Ca2+ channels have long been viewed as important, if not necessary, for this activity. The studies reported here challenge this viewpoint. Using a combination of optical and electrophysiological approaches in brain slices, it was found that antagonism of L-type Ca2+ channel effectively stopped dendritic Ca2+ oscillations but left autonomous pacemaking unchanged. Moreover, damping intracellular Ca2+ oscillations with exogenous buffer had little effect on pacemaking rate. Although not necessary for pacemaking, L-type channels helped support pacemaking when challenged with cationic channel blockers. Simulations suggested that the insensitivity to antagonism of L-type channels reflected the multichannel nature of the pacemaking process. The robustness of pacemaking underscores its biological importance and provides a framework for understanding how therapeutics targeting L-type Ca2+ channels might protect dopaminergic neurons in Parkinson's disease without compromising their function.

Indexed as

Action PotentialsAnimalsBiological ClocksDopamineMaleMiceMice, Inbred C57BLNeuronsSubstantia NigraDopamine

Identifiers

PMID19726659
PMCPMC2784968
OpenAlexW2006200262

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.