Evidence map›Paper›PMID 20188150›Full record

ArticleNeuroscience2010

Voltage-activated calcium channel expression profiles in mouse brain and cultured hippocampal neurons.

B Schlick, B E Flucher, G J Obermair

Abstract read
In one paragraph

Article in Neuroscience, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

94 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  10. Autism-Linked Mutations in αPharmaceuticals (Basel, Switzerland) · 2024
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  11. Glucocorticoids Rapidly Modulate CaThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  12. Article
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  14. Article
  15. Review
  16. Review
  17. Article
  18. Pathophysiological Roles of Auxiliary Calcium Channel αHandbook of experimental pharmacology · 2023
    Article
  19. Whole Exome Sequencing Identifies a Heterozygous Variant in the Cav1.3 GeneInternational journal of molecular sciences · 2022
    Article
  20. Article

34 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

3 authors.

B SchlickDepartment of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria.
B E Flucher
G J Obermair

Funding

Austrian Science Fund FWF P 17806Austrian Science Fund FWF P 17807Austrian Science Fund FWF P 20059
6 · The paper itself

Abstract

The importance and diversity of calcium signaling in the brain is mirrored by the expression of a multitude of voltage-activated calcium channel (Ca(V)) isoforms. Whereas the overall distributions of alpha(1) subunits are well established, the expression patterns of distinct channel isoforms in specific brain regions and neurons, as well as those of the auxiliary beta and alpha(2)delta subunits are still incompletely characterized. Further it is unknown whether neuronal differentiation and activity induce changes of Ca(V) subunit composition. Here we combined absolute and relative quantitative TaqMan reverse transcription PCR (RT-PCR) to analyze mRNA expression of all high voltage-activated Ca(V) alpha(1) subunits and all beta and alpha(2)delta subunits. This allowed for the first time the direct comparison of complete Ca(V) expression profiles of mouse cortex, hippocampus, cerebellum, and cultured hippocampal neurons. All brain regions expressed characteristic profiles of the full set of isoforms, except Ca(V)1.1 and Ca(V)1.4. In cortex development was accompanied by a general down regulation of alpha(1) and alpha(2)delta subunits and a shift from beta(1)/beta(3) to beta(2)/beta(4). The most abundant Ca(V) isoforms in cerebellum were Ca(V)2.1, beta(4), and alpha(2)delta-2, and in hippocampus Ca(V)2.3, beta(2), and alpha(2)delta-1. Interestingly, cultured hippocampal neurons also expressed the same Ca(V) complement as adult hippocampus. During differentiation specific Ca(V) isoforms experienced up- or down-regulation; however blocking electrical activity did not affect Ca(V) expression patterns. Correlation analysis of alpha(1), beta and alpha(2)delta subunit expression throughout all examined preparations revealed a strong preference of Ca(V)2.1 for beta(4) and alpha(2)delta-2 and vice versa, whereas the other alpha(1) isoforms were non-selectively expressed together with each of the other beta and alpha(2)delta isoforms. Together our results revealed a remarkably stable overall Ca(2+) channel complement as well as tissue specific differences in expression levels. Developmental changes are likely determined by an intrinsic program and not regulated by changes in neuronal activity.

Indexed as

AgingAnimalsBrainCalcium ChannelsCalcium SignalingCells, CulturedCerebellumCerebral CortexDown-RegulationGene Expression RegulationHippocampusMembrane PotentialsMiceMice, Inbred BALB CProtein IsoformsProtein SubunitsCalcium ChannelsProtein IsoformsProtein SubunitsRNA, Messenger

Identifiers

PMID20188150
PMCPMC3315124

What OpenQuestion holds

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Registered trials

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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.