Evidence map›Paper›PMID 10234019›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience1999

Spontaneous activity in developing turtle retinal ganglion cells: pharmacological studies.

E Sernagor, N M Grzywacz

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

24 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
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  13. Non-cell-autonomous factor induces the transition from excitatory to inhibitory GABA signaling in retina independent of activity.Proceedings of the National Academy of Sciences of the United States of America · 2010
    Article
  14. Article
  15. Early-stage waves in the retinal network emerge close to a critical state transition between local and global functional connectivity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2009
    Article
  16. Article
  17. GABA type-A activity controls its own developmental polarity switch in the maturing retina.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2005
    Article
  18. Developmental modulation of retinal wave dynamics: shedding light on the GABA saga.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2003
    Article
  19. Article
  20. Review
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

2 authors at 2 institutions in 2 countries.

E SernagorDepartment of Child Health, the Medical School, University of Newcastle upon Tyne, Newcastle upon Tyne NE2 4HH, United Kingdom.
N M Grzywacz
Newcastle University · GBSmith-Kettlewell Eye Research Institute · US

Funding

FACILITATION AND INHIBITION IN DIRECTIONAL SELECTIVITYR01EY008921 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GRZYWACZ, NORBERTO M · 1991 to 2005
$2.4M
Development of Retinal Receptive FieldsR01EY011170 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GRZYWACZ, NORBERTO M · 1997 to 2006
$2.0M
RECEPTIVE FIELD PROPERTIES IN THE DEVELOPING RETINAR01EY010600 · NEI · SMITH-KETTLEWELL EYE RESEARCH INSTITUTE · PI SERNAGOR, EVELYNE · 1995 to 1995
–
NEI NIH HHS EY08921NEI NIH HHS EY10600NEI NIH HHS EY11170NEI NIH HHS R01 EY008921NEI NIH HHS R01 EY011170
6 · The paper itself

Abstract

Extracellular recordings were obtained from the ganglion cell (GC) layer during correlated spontaneous bursting activity (SBA) in the immature turtle retina. Pharmacological agents were bath-applied, and their effects on burst and correlation parameters were determined. SBA requires synaptic transmission. It was blocked in the presence of curare and mecamylamine, two cholinergic nicotinic antagonists, and enhanced with neostigmine, a cholinesterase inhibitor. SBA was profoundly inhibited during blockade of glutamatergic receptors with the broad spectrum antagonist kynurenate and it vanished with 6,7-dinitroquinoxaline-2-3-dione (DNQX) and 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX), two AMPA/kainate receptor antagonists. Blockade of NMDA receptors with D(-)-2-amino-5-phosphonopentanoic acid (D-AP-5) led only to a modest reduction in SBA. Blockade of GABAA receptors with bicuculline prolonged the duration of the bursts. Inhibition of GABA uptake with nipecotic acid led to a decrease in burst rate. Blockade of K+ channels with cesium (Cs+) and tetraethylammonium (TEA) led to a dramatic decrease in excitability. Burst propagation between neighboring GCs was reduced by K+ channel blockade. Gap junction blockade had no consistent effect on bursts or correlation parameters. None of these drugs had a strong effect on the refractory period between bursts. We conclude that correlated SBA in immature turtle GCs requires both cholinergic nicotinic and glutamatergic (mainly through AMPA/kainate receptors) synaptic transmission. GABAergic activity modulates the intensity and the duration of the bursts. Extracellular K+ is involved in lateral activity propagation and increases retinal excitability, which may be required for burst generation.

Indexed as

Action PotentialsAnimalsEmbryonic DevelopmentEmbryo, NonmammalianExcitatory Amino Acid AntagonistsGap JunctionsPotassiumRetinal Ganglion CellsSynaptic TransmissionTurtlesExcitatory Amino Acid AntagonistsPotassium

Identifiers

PMID10234019
PMCPMC6782712
OpenAlexW2170605744

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.