Evidence map›Paper›PMID 27832312›Full record

ArticleEuropean radiology2017

Penetration and distribution of gadolinium-based contrast agents into the cerebrospinal fluid in healthy rats: a potential pathway of entry into the brain tissue.

Gregor Jost, Thomas Frenzel, Jessica Lohrke, Diana Constanze Lenhard, Shinji Naganawa, Hubertus Pietsch

Open access · hybridAbstract read
In one paragraph

Article in European radiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
10.8field-weighted citation impact, top 1% 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

64 citing papers in PubMed, 136 citations in OpenAlex.

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  13. Prospective Safety Study of Intrathecal Gadobutrol in Different Doses.AJNR. American journal of neuroradiology · 2023
    Article
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  16. The Glymphatic System: A Review of the Challenges in Visualizing its Structure and Function with MR Imaging.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2022
    Review
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4 more citing papers are in PubMed but not listed here.

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 3 institutions in 2 countries.

Gregor JostMR and CT Contrast Media Research, Bayer Pharma AG, Muellerstrasse 178, 13353, Berlin, Germany. gregor.jost@bayer.com.
Thomas FrenzelMR and CT Contrast Media Research, Bayer Pharma AG, Muellerstrasse 178, 13353, Berlin, Germany.
Jessica LohrkeMR and CT Contrast Media Research, Bayer Pharma AG, Muellerstrasse 178, 13353, Berlin, Germany.
Diana Constanze LenhardInstitute of Vegetative Physiology, Charité, Berlin, Germany.
Shinji NaganawaDepartment of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Hubertus PietschMR and CT Contrast Media Research, Bayer Pharma AG, Muellerstrasse 178, 13353, Berlin, Germany.
Bayer (Germany) · DECharité - Universitätsmedizin Berlin · DENagoya University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveSignal hyperintensity on unenhanced MRI in certain brain regions has been reported after multiple administrations of some, but not all, gadolinium-based contrast agents (GBCAs). One potential initial pathway of GBCA entry into the brain, infiltration from blood into the cerebrospinal fluid (CSF), was systematically evaluated in this preclinical study.

methodsGBCA infiltration and distribution in the CSF were investigated in healthy rats using repeated fluid-attenuated MRI up to 4 h after high-dose (1.8 mmol/kg) administration of six marketed and one experimental GBCA. Additionally, gadolinium measurements in CSF, blood and brain tissue samples (after 24 h) were performed using inductively coupled plasma mass spectrometry.

resultsEnhanced MRI signals in the CSF spaces with similar distribution kinetics were observed for all GBCAs. No substantial differences in the gadolinium concentrations among the marketed GBCAs were found in the CSF, blood or brain tissue. After 4.5 h, the concentration in the CSF was clearly higher than in blood but was almost completely cleared and lower than the brain tissue concentration after 24 h.

conclusionsIn contrast to the brain signal hyperintensities, no differences in penetration and distribution into the CSF of healthy rats exist among the marketed GBCAs. KEY POINTS: • Gadolinium-based contrast agents can cross the blood-CSF barrier. • Fluid-attenuated MRI shows GBCA distribution with CSF flow. • GBCA structure and physicochemical properties do not impact CSF penetration and distribution. • GBCA clearance from CSF was almost complete within 24 h in rats. • CSF is a potential pathway of GBCA entry into the brain.

Indexed as

AnimalsBlood-Brain BarrierBrainCerebrospinal FluidContrast MediaGadoliniumMagnetic Resonance ImagingMaleMass SpectrometryModels, AnimalRatsRats, WistarReference ValuesContrast MediaGadoliniumBrainCerebrospinal fluidContrast mediaGadoliniumMagnetic resonance imaging

Identifiers

PMID27832312
PMCPMC5486780
OpenAlexW2556878797

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.