Evidence map›Paper›PMID 18345351›Full record

ArticleNeuron glia biology2007

Added astroglia promote greater synapse density and higher activity in neuronal networks.

Michael D Boehler, Bruce C Wheeler, Gregory J Brewer

Abstract read
In one paragraph

Article in Neuron glia biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

31 citing papers in PubMed, 61 citations in OpenAlex.

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  19. Hippocampal networks on reliable patterned substrates.Journal of neuroscience methods · 2012
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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

3 authors at 2 institutions in 1 country.

Michael D BoehlerDepartment of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA.
Bruce C Wheeler
Gregory J Brewer
Southern Illinois University School of Medicine · USUniversity of Illinois Urbana-Champaign · US

Funding

A 3-D Microfluidic/Electronic Neural-Interfacing SystemR01EB000786 · NIBIB · GEORGIA INSTITUTE OF TECHNOLOGY · PI DEWEERTH, STEPHEN P · 2002 to 2006
$7.2M
ENGINEERING FORM AND FUNCTION IN NEURONAL NETWORKSR01NS052233 · NINDS · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI WHEELER, BRUCE C. · 2006 to 2016
$4.1M
AGE DEPENDENT RESPONSE OF HIPPOCAMPAL NEURONS TO STRESSR01AG013435 · NIA · SOUTHERN ILLINOIS UNIVERSITY SCH OF MED · PI BREWER, GREGORY J · 1997 to 2006
$1.7M
NIA NIH HHS R01 AG013435NIBIB NIH HHS R01 EB000786NINDS NIH HHS R01 NS052233
6 · The paper itself

Abstract

Astroglia are known to potentiate individual synapses, but their contribution to networks is unclear. Here we examined the effect of adding either astroglia or media conditioned by astroglia on entire networks of rat hippocampal neurons cultured on microelectrode arrays. Added astroglia increased spontaneous spike rates nearly two-fold and glutamate-stimulated spiking by six-fold, with desensitization eliminated for bath addition of 25 microM glutamate. Astrocyte-conditioned medium partly mimicked the effects of added astroglia. Bursting behavior was largely unaffected by added astroglia except with added glutamate. Addition of the GABA(A) receptor antagonist bicuculline also increased spike rates but with more subtle differences between networks without or with added astroglia. This indicates that networks without added astroglia were inhibited greatly. In all conditions, the log-log distribution of spike rates fit well to linear distributions over three orders of magnitude. Networks with added astroglia shifted consistently toward higher spike rates. Immunostaining for GFAP revealed a linear increase with added astroglia, which also increased neuronal survival. The increased spike rates with added astroglia correlated with a 1.7-fold increase in immunoreactive synaptophysin puncta, and increases of six-fold for GABA(Abeta), two-fold for NMDA-R1 and two-fold for Glu-R1 puncta, with receptor clustering that indicated synaptic scaling. Together, these results indicate that added astroglia increase the density of synapses and receptors, and facilitate higher spike rates for many elements in the network. These effects are reproduced by glia-conditioned media, with the exception of glutamate-mediated transmission.

Indexed as

multielectrode arrayneuron–glia cell cultureserum-free culturesynaptic scalingsynaptogenesis

Identifiers

PMID18345351
PMCPMC2267743
OpenAlexW2035881421

What OpenQuestion holds

Textmetadata
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.