Evidence map›Paper›PMID 22972962›Full record

ArticleJournal of neurophysiology2012

Regulation of presynaptic calcium in a mammalian synaptic terminal.

Qun-Fang Wan, Everett Nixon, Ruth Heidelberger

Abstract read
In one paragraph

Article in Journal of neurophysiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

29 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Review
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  4. Article
  5. Review
  6. Disturbed Presynaptic CaiScience · 2020
    Article
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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.

Qun-Fang WanDepartment of Neurobiology and Anatomy, University of Texas Medical School at Houston, Houston, TX 77030, USA.
Everett Nixon
Ruth Heidelberger
The University of Texas at Austin · USThe University of Texas Health Science Center at Houston · US

Funding

Mechanisms of Neurotransmisson in Vertebrate RetinaR01EY012128 · NEI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI HEIDELBERGER, RUTH · 2003 to 2025
$8.0M
VISION RESEARCHP30EY010608 · NEI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI MASSEY, STEPHEN C · 1994 to 2014
$7.9M
MECHANISMS OF NEUROTRANSMISSION IN VERTEBRATE RETINAR29EY012128 · NEI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI HEIDELBERGER, RUTH · 1998 to 2002
$343k
NEI NIH HHS EY-010608NEI NIH HHS EY-012128NEI NIH HHS R01 EY012128
6 · The paper itself

Abstract

Ca(2+) signaling in synaptic terminals plays a critical role in neurotransmitter release and short-term synaptic plasticity. In the present study, we examined the role of synaptic Ca(2+) handling mechanisms in the synaptic terminals of mammalian rod bipolar cells, neurons that play a pivotal role in the high-sensitivity vision pathway. We found that mitochondria sequester Ca(2+) under conditions of high Ca(2+) load, maintaining intraterminal Ca(2+) near resting levels. Indeed, the effect of the mitochondria was so powerful that the ability to clamp intraterminal Ca(2+) with a somatically positioned whole cell patch pipette was compromised. The plasma membrane Ca(2+)-ATPase (PMCA), but not the Na(+)/Ca(2+) exchanger (NCX) or the sarco(endo)plasmic reticulum Ca(2+)-ATPase (SERCA), was an important regulator of resting Ca(2+). Furthermore, PMCA activity, but not NCX or SERCA activity, was essential for the recovery of Ca(2+) levels following depolarization-evoked Ca(2+) entry. Loss of PMCA function was also associated with impaired restoration of membrane surface area following depolarization-evoked exocytosis. Given its roles in the regulation of intraterminal Ca(2+) at rest and after a stimulus-evoked Ca(2+) rise, the PMCA is poised to modulate luminance coding and adaptation to background illumination in the mammalian rod bipolar cell.

Indexed as

Calcium SignalingAction PotentialsAnimalsCalciumExocytosisGoldfishMiceMice, Inbred C57BLMitochondriaPlasma Membrane Calcium-Transporting ATPasesPresynaptic TerminalsRetinal Rod Photoreceptor CellsSarcoplasmic Reticulum Calcium-Transporting ATPasesSodium-Calcium ExchangerCalciumPlasma Membrane Calcium-Transporting ATPasesSarcoplasmic Reticulum Calcium-Transporting ATPasesSodium-Calcium Exchanger

Identifiers

PMID22972962
PMCPMC3544868
OpenAlexW2052625060

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.