Evidence map›Paper›PMID 21673815›Full record

ArticlePloS one2011

Fibro-vascular coupling in the control of cochlear blood flow.

Min Dai, Xiaorui Shi

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.7field-weighted citation impact, top 19% 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

26 citing papers in PubMed, 38 citations in OpenAlex.

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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

2 authors at 1 institution in 2 countries.

Min DaiOregon Hearing Research Center, Department of Otolaryngology/Head and Neck Surgery, Oregon Health & Science University, Portland, Oregon, United States of America.
Xiaorui Shi
Oregon Health & Science University · US

Funding

PORTLAND AREA COMMUNICATION RESEARCH CORE CENTERP30DC005983 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI NUTTALL, ALFRED L · 2003 to 2017
$9.0M
CONTROL OF INNER EAR MICROCIRULATIONR01DC000105 · NIDCD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI NUTTALL, ALFRED L · 1989 to 2017
$7.6M
Fibrovascular coupling in the cochlea and pericyte recruitment after noiseR01DC010844 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI SHI, XIAORUI · 2010 to 2014
$1.9M
The role of cochlear pericytes in control of cochlear microcirculationR03DC008888 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI SHI, XIAORUI · 2007 to 2009
$519k
Howard Hughes Medical InstituteNIDCD NIH HHS DC008888S1NIDCD NIH HHS NIHP30-DC005983NIDCD NIH HHS P30 DC005983NIDCD NIH HHS R01 DC000105NIDCD NIH HHS R01 DC00105NIDCD NIH HHS R01 DC010844NIDCD NIH HHS R01-DC010844NIDCD NIH HHS R03 DC008888NIDCD NIH HHS R03-DC008888
6 · The paper itself

Abstract

backgroundTransduction of sound in the cochlea is metabolically demanding. The lateral wall and hair cells are critically vulnerable to hypoxia, especially at high sound levels, and tight control over cochlear blood flow (CBF) is a physiological necessity. Yet despite the importance of CBF for hearing, consensus on what mechanisms are involved has not been obtained. METHODOLOGY/PRINCIPAL

findingsWe report on a local control mechanism for regulating inner ear blood flow involving fibrocyte signaling. Fibrocytes in the super-strial region are spatially distributed near pre-capillaries of the spiral ligament of the albino guinea pig cochlear lateral wall, as demonstrably shown in transmission electron microscope and confocal images. Immunohistochemical techniques reveal the inter-connected fibrocytes to be positive for Na+/K+ ATPase β1 and S100. The connected fibrocytes display more Ca(2+) signaling than other cells in the cochlear lateral wall as indicated by fluorescence of a Ca(2+) sensor, fluo-4. Elevation of Ca(2+) in fibrocytes, induced by photolytic uncaging of the divalent ion chelator o-nitrophenyl EGTA, results in propagation of a Ca(2+) signal to neighboring vascular cells and vasodilation in capillaries. Of more physiological significance, fibrocyte to vascular cell coupled signaling was found to mediate the sound stimulated increase in cochlear blood flow (CBF). Cyclooxygenase-1 (COX-1) was required for capillary dilation. CONCLUSIONS/SIGNIFICANCE: The findings provide the first evidence that signaling between fibrocytes and vascular cells modulates CBF and is a key mechanism for meeting the cellular metabolic demand of increased sound activity.

Indexed as

Regional Blood FlowAnimalsBlood VesselsCalciumCalcium SignalingCapillariesCochleaCyclooxygenase 1FemaleGap JunctionsGuinea PigsMalePhotolysisSoundVasodilationCalciumCyclooxygenase 1

Identifiers

PMID21673815
PMCPMC3106013
OpenAlexW2148867798

What OpenQuestion holds

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Registered trials

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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.