Evidence map›Paper›PMID 20483317›Full record

ArticleBiophysical journal2010

Quantitative analysis of synaptic release at the photoreceptor synapse.

Gabriel Duncan, Katalin Rabl, Ian Gemp, Ruth Heidelberger, Wallace B Thoreson

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

25 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Transmission at rod and cone ribbon synapses in the retina.Pflugers Archiv : European journal of physiology · 2021
    Review
  5. CaeLife · 2019
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Properties of ribbon and non-ribbon release from rod photoreceptors revealed by visualizing individual synaptic vesicles.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  16. Article
  17. Article
  18. Review
  19. An improved model for the rate-level functions of auditory-nerve fibers.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    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

5 authors at 3 institutions in 1 country.

Gabriel DuncanDepartment of Neurobiology and Anatomy, University of Texas Health Science Center at Houston, Houston, Texas, USA.
Katalin Rabl
Ian Gemp
Ruth Heidelberger
Wallace B Thoreson
The University of Texas Health Science Center at Houston · USUniversity of California, San Francisco · USUniversity of Nebraska Medical Center · US

Funding

Mechanisms of Neurotransmisson in Vertebrate RetinaR01EY012128 · NEI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI HEIDELBERGER, RUTH · 2003 to 2025
$8.0M
Regulation of Photoreceptor NeurotransmisssionR01EY010542 · NEI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI KARATEKIN, ERDEM, THORESON, WALLACE B · 2001 to 2023
$7.7M
MECHANISMS OF NEUROTRANSMISSION IN VERTEBRATE RETINAR29EY012128 · NEI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI HEIDELBERGER, RUTH · 1998 to 2002
$343k
CHLORIDE REGULATION OF PHOTORECEPTOR NEUROTRANSMISSIONR29EY010542 · NEI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI THORESON, WALLACE B · 1996 to 2000
$105k
METABOTROPIC GLUTAMATE RECEPTORS IN RETINAL NEURONSR55EY010542 · NEI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI THORESON, WALLACE B · 1994 to 1994
–
NEI NIH HHS EY-10542NEI NIH HHS EY-12128NEI NIH HHS R01 EY010542NEI NIH HHS R01 EY012128NEI NIH HHS R29 EY010542NEI NIH HHS R29 EY012128
6 · The paper itself

Abstract

Exocytosis from the rod photoreceptor is stimulated by submicromolar Ca(2+) and exhibits an unusually shallow dependence on presynaptic Ca(2+). To provide a quantitative description of the photoreceptor Ca(2+) sensor for exocytosis, we tested a family of conventional and allosteric computational models describing the final Ca(2+)-binding steps leading to exocytosis. Simulations were fit to two measures of release, evoked by flash-photolysis of caged Ca(2+): exocytotic capacitance changes from individual rods and postsynaptic currents of second-order neurons. The best simulations supported the occupancy of only two Ca(2+) binding sites on the rod Ca(2+) sensor rather than the typical four or five. For most models, the on-rates for Ca(2+) binding and maximal fusion rate were comparable to those of other neurons. However, the off-rates for Ca(2+) unbinding were unexpectedly slow. In addition to contributing to the high-affinity of the photoreceptor Ca(2+) sensor, slow Ca(2+) unbinding may support the fusion of vesicles located at a distance from Ca(2+) channels. In addition, partial sensor occupancy due to slow unbinding may contribute to the linearization of the first synapse in vision.

Indexed as

Action PotentialsAnimalsCalcium SignalingCaudataElectric CapacitanceElectric StimulationElectrophysiologyExcitatory Postsynaptic PotentialsExocytosisMembrane PotentialsNeural InhibitionNeural PathwaysNeuronsPatch-Clamp TechniquesPhotoreceptor CellsRetinal Cone Photoreceptor Cells

Identifiers

PMID20483317
PMCPMC2872209
OpenAlexW2085948911

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.