Evidence map›Paper›PMID 18755743›Full record

ArticleThe Journal of physiology2008

Depletion of calcium stores regulates calcium influx and signal transmission in rod photoreceptors.

Tamas Szikra, Karen Cusato, Wallace B Thoreson, Peter Barabas, Theodore M Bartoletti, David Krizaj

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
1.9field-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

40 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Review
  3. The Mechanism of LTXInternational journal of molecular sciences · 2025
    Article
  4. Article
  5. Neuronal Store-Operated Calcium Channels.Molecular neurobiology · 2023
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Redefining the role of CaCell death & disease · 2022
    Article
  12. Transmission at rod and cone ribbon synapses in the retina.Pflugers Archiv : European journal of physiology · 2021
    Review
  13. Preservation of endoplasmic reticulum (ER) CaFASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  14. Article
  15. Article
  16. Store-Operated Calcium Entry in Müller Glia Is Controlled by Synergistic Activation of TRPC and Orai Channels.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
  17. Article
  18. Article
  19. Review
  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

6 authors at 2 institutions in 1 country.

Tamas SzikraDepartment of Ophthalmology, UCSF School of Medicine, San Francisco, CA 94143, USA.
Karen Cusato
Wallace B Thoreson
Peter Barabas
Theodore M Bartoletti
David Krizaj
University of California, San Francisco · USUniversity of Nebraska Medical Center · US

Funding

Regulation of Photoreceptor NeurotransmisssionR01EY010542 · NEI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI KARATEKIN, ERDEM, THORESON, WALLACE B · 2001 to 2023
$7.7M
REGULATION OF NEUROTRANSMISSION IN THE RETINAR01EY013870 · NEI · UNIVERSITY OF UTAH · PI KRIZAJ, DAVID · 2002 to 2011
$2.7M
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 EY10542NEI NIH HHS EY13870NEI NIH HHS R01 EY010542NEI NIH HHS R01 EY013870NEI NIH HHS R29 EY010542
6 · The paper itself

Abstract

Tonic synapses are specialized for sustained calcium entry and transmitter release, allowing them to operate in a graded fashion over a wide dynamic range. We identified a novel plasma membrane calcium entry mechanism that extends the range of rod photoreceptor signalling into light-adapted conditions. The mechanism, which shares molecular and physiological characteristics with store-operated calcium entry (SOCE), is required to maintain baseline [Ca(2+)](i) in rod inner segments and synaptic terminals. Sustained Ca(2+) entry into rod cytosol is augmented by store depletion, blocked by La(3+) and Gd(3+) and suppressed by organic antagonists MRS-1845 and SKF-96365. Store depletion and the subsequent Ca(2+) influx directly stimulated exocytosis in terminals of light-adapted rods loaded with the activity-dependent dye FM1-43. Moreover, SOCE blockers suppressed rod-mediated synaptic inputs to horizontal cells without affecting presynaptic voltage-operated Ca(2+) entry. Silencing of TRPC1 expression with small interference RNA disrupted SOCE in rods, but had no effect on cone Ca(2+) signalling. Rods were immunopositive for TRPC1 whereas cone inner segments immunostained with TRPC6 channel antibodies. Thus, SOCE modulates Ca(2+) homeostasis and light-evoked neurotransmission at the rod photoreceptor synapse mediated by TRPC1.

Indexed as

AnimalsCalciumCalcium SignalingCaudataCells, CulturedLightRetinal Rod Photoreceptor CellsCalcium

Identifiers

PMID18755743
PMCPMC2614069
OpenAlexW1584547533

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.