Evidence map›Paper›PMID 24952083›Full record

ArticleJournal of the Association for Research in Otolaryngology : JARO2014

Systemic lipopolysaccharide compromises the blood-labyrinth barrier and increases entry of serum fluorescein into the perilymph.

Keiko Hirose, Jared J Hartsock, Shane Johnson, Peter Santi, Alec N Salt

Open access · greenAbstract read
In one paragraph

Article in Journal of the Association for Research in Otolaryngology : JARO, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
4.4field-weighted citation impact, top 6% 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

58 citing papers in PubMed, 96 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

5 authors at 2 institutions in 1 country.

Keiko HiroseDepartment of Otolaryngology, Washington University School of Medicine, 660 South Euclid Avenue, Campus, Box 8115, St. Louis, MO, 63110, USA, keiko_hirose@post.harvard.edu.
Jared J Hartsock
Shane Johnson
Peter Santi
Alec N Salt
University of Minnesota · USWashington University in St. Louis · US

Funding

INNER EAR FLUID INTERACTIONSR01DC001368 · NIDCD · WASHINGTON UNIVERSITY · PI SALT, ALEC N · 1992 to 2019
$6.9M
COCHLEAR MACROPHAGES AND EPITHELIAL REPAIRR01DC011315 · NIDCD · WASHINGTON UNIVERSITY · PI HIROSE, KEIKO · 2011 to 2020
$3.5M
NIDCD NIH HHS R01 DC001368NIDCD NIH HHS R01 DC011315
6 · The paper itself

Abstract

The blood vessels that supply the inner ear form a barrier between the blood and the inner ear fluids to control the exchange of solutes, protein, and water. This barrier, called the blood-labyrinth barrier (BLB) is analogous to the blood-brain barrier (BBB), which plays a critical role in limiting the entry of inflammatory and infectious agents into the central nervous system. We have developed an in vivo method to assess the functional integrity of the BLB by injecting sodium fluorescein into the systemic circulation of mice and measuring the amount of fluorescein that enters perilymph in live animals. In these experiments, perilymph was collected from control and experimental mice in sequential samples taken from the posterior semicircular canal approximately 30 min after systemic fluorescein administration. Perilymph fluorescein concentrations in control mice were compared with perilymph fluorescein concentrations after lipopolysaccharide (LPS) treatment (1 mg/kg IP daily for 2 days). The concentration of perilymphatic fluorescein, normalized to serum fluorescein, was significantly higher in LPS-treated mice compared to controls. In order to assess the contributions of perilymph and endolymph in our inner ear fluid samples, sodium ion concentration of the inner ear fluid was measured using ion-selective electrodes. The sampled fluid from the posterior semicircular canal demonstrated an average sodium concentration of 145 mM, consistent with perilymph. These experiments establish a novel technique to assess the functional integrity of the BLB using quantitative methods and to provide a comparison of the BLB to the BBB.

Indexed as

AnimalsBlood-Brain BarrierCochleaEar, InnerFluoresceinLipopolysaccharidesMiceMice, Inbred C57BLPerilymphPermeabilitySodiumFluoresceinLipopolysaccharidesSodium

Identifiers

PMID24952083
PMCPMC4164684
OpenAlexW2003141750

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.