Evidence map›Paper›PMID 12805298›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2003

The distribution of calcium buffering proteins in the turtle cochlea.

Carole M Hackney, Shanthini Mahendrasingam, Eugenia M C Jones, Robert Fettiplace

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.4field-weighted citation impact, top 21% 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

30 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
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  4. Review
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  7. The Coupling between CaThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  8. Article
  9. EF-hand protein Ca2+ buffers regulate Ca2+ influx and exocytosis in sensory hair cells.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  10. Review
  11. Review
  12. Disruption of intracellular calcium regulation is integral to aminoglycoside-induced hair cell death.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  13. Article
  14. Article
  15. Frequency-selective exocytosis by ribbon synapses of hair cells in the bullfrog's amphibian papilla.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Article
  16. Article
  17. Review
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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

4 authors at 2 institutions in 2 countries.

Carole M HackneyMacKay Institute of Communication and Neuroscience, School of Life Sciences, Keele University, Keele, Staffordshire ST5 5BG, United Kingdom.
Shanthini Mahendrasingam
Eugenia M C Jones
Robert Fettiplace
Keele University · GBUniversity of Wisconsin–Madison · US

Funding

INTRACELLULAR CALCIUM IN HAIR CELLSR01DC001362 · NIDCD · UNIVERSITY OF WISCONSIN-MADISON · PI ROBERT FETTIPLACE · 1992 to 2026
$11.3M
NIDCD NIH HHS R01 DC001362NIDCD NIH HHS R01 DC 01362Wellcome Trust
6 · The paper itself

Abstract

Hair cells of the inner ear contain high concentrations of calcium-binding proteins that limit calcium signals and prevent cross talk between different signaling pathways during auditory transduction. Using light microscope immunofluorescence and post-embedding immunogold labeling in the electron microscope, we characterized the distribution of three calcium-buffering proteins in the turtle cochlea. Both calbindin-D28k and parvalbumin-beta were confined to hair cells in which they showed a similar distribution, whereas calretinin was present mainly in hair-cell nuclei but also occurred in supporting cells and nerve fibers. The hair-cell concentration of calbindin-D28k but not of parvalbumin-beta increased from the low- to high-frequency end of the cochlea. Calibration against standards containing known amounts of calcium-buffering protein processed in the same fluid drop as the cochlear sections gave cytoplasmic concentrations of calbindin-D28k as 0.13-0.63 mm and parvalbumin-beta as approximately 0.25 mm, but calretinin was an order of magnitude less. Total amount of Ca 2+-binding sites on the proteins is at least 1.0 mm in low-frequency hair cells and 3.0 mm in high-frequency cells. Reverse transcription-PCR showed that mRNA for all three proteins was expressed in turtle hair cells. We suggest that calbindin-D28k and parvalbumin-beta may serve as endogenous mobile calcium buffers, but the predominantly nuclear location of calretinin argues for another role in calcium signaling. The results support conclusions from electrophysiological measurements that millimolar concentrations of endogenous calcium buffers are present in turtle hair cells. Parvalbumin-beta was also found in both inner and outer hair cells of the guinea pig cochlea.

Indexed as

AnimalsAntibody SpecificityCalbindin 2CalbindinsCalcium-Binding ProteinsCiliaCochleaFluorescent Antibody TechniqueGuinea PigsHair Cells, AuditoryImmunohistochemistryMolecular Sequence DataParvalbuminsRNA, MessengerS100 Calcium Binding Protein GTurtlesCalbindin 2CalbindinsCalcium-Binding ProteinsParvalbuminsRNA, MessengerS100 Calcium Binding Protein G

Identifiers

PMID12805298
PMCPMC6740801
OpenAlexW2125069729

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.