Evidence map›Paper›PMID 26886890›Full record

ArticleInvestigative ophthalmology & visual science2016

MRI of Retinal Free Radical Production With Laminar Resolution In Vivo.

Bruce A Berkowitz, Alfred S Lewin, Manas R Biswal, Bryce X Bredell, Christopher Davis, Robin Roberts

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
9.6field-weighted citation impact, top 3% 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

28 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
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  5. Neonatal Anesthesia and Oxidative Stress.Antioxidants (Basel, Switzerland) · 2022
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  11. Rod Photoreceptor Neuroprotection in Dark-Reared Pde6brd10 Mice.Investigative ophthalmology & visual science · 2020
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
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  19. Article
  20. Oxidative stress measured in vivo without an exogenous contrast agent using QUEST MRI.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2018
    Review
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 1 country.

Bruce A BerkowitzDepartment of Anatomy and Cell Biology Wayne State University School of Medicine, Detroit, Michigan, United States 2Department of Ophthalmology, Wayne State University School of Medicine, Detroit, Michigan, United States.
Alfred S LewinDepartment of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida, United States.
Manas R BiswalDepartment of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida, United States.
Bryce X BredellDepartment of Anatomy and Cell Biology Wayne State University School of Medicine, Detroit, Michigan, United States.
Christopher DavisDepartment of Anatomy and Cell Biology Wayne State University School of Medicine, Detroit, Michigan, United States.
Robin RobertsDepartment of Anatomy and Cell Biology Wayne State University School of Medicine, Detroit, Michigan, United States.
Michigan United · USUniversity of Florida · USWayne State University · US

Funding

Vision Research CoreP30EY021721 · NEI · UNIVERSITY OF FLORIDA · PI HAUSWIRTH, WILLIAM W · 2011 to 2015
$2.8M
Mitochondrial Oxidative Stress in the Retinal Pigment Epithelium as a Model for AR01EY020825 · NEI · UNIVERSITY OF FLORIDA · PI LEWIN, ALFRED S · 2011 to 2013
$1.6M
Role of calcium channels in the development of diabetic retinopathyR21EY021619 · NEI · WAYNE STATE UNIVERSITY · PI BERKOWITZ, BRUCE A. · 2014 to 2015
$413k
NEI NIH HHS EY021619NEI NIH HHS NIH EY020825NEI NIH HHS P30 EY021721NEI NIH HHS P30-EY021721NEI NIH HHS R01 EY020825NEI NIH HHS R21 EY021619
6 · The paper itself

Abstract

purposeRecent studies have suggested the hypothesis that quench-assisted 1/T1 magnetic resonance imaging (MRI) measures free radical production with laminar resolution in vivo without the need of a contrast agent. Here, we test this hypothesis further by examining the spatial and detection sensitivity of quench-assisted 1/T1 MRI to strain, age, or retinal cell layer-specific genetic manipulations.

methodsWe studied: adult wild-type mice; mice at postnatal day 7 (P7); cre dependent retinal pigment epithelium (RPE)-specific MnSOD knockout mice; doxycycline-treated Sod2f(lox/flox) mice lacking the cre transgene; and α-transducin knockout (Gnat1(-/-)) mice on a C57Bl/6 background. Transretinal 1/T1 profiles were mapped in vivo in the dark without or with antioxidant treatment, or followed by light exposure. We calibrated profiles spatially using optical coherence tomography.

resultsDark-adapted RPE-specific MnSOD knockout mice had greater than normal 1/T1 in the RPE and outer nuclear layers that was corrected to wild-type levels by antioxidant treatment. Dark and light Gnat1(-/-) mice also had greater than normal outer retinal 1/T1 values. In adult wild-type mice, dark values of 1/T1 in the ellipsoid region and in the outer segment were suppressed by 13 minutes of light. By 29 minutes of light, 1/T1 reduction extended to the outer nuclear layer. Gnat1(-/-) mice demonstrated a faster light-evoked suppression of 1/T1 values in the outer retina. In P7 mice, transretinal 1/T1 profiles were the same in dark and light.

conclusionsQuench-assisted MRI has the laminar resolution and detection sensitivity to evaluate normal and pathologic production of free radicals in vivo.

Indexed as

AnimalsDark AdaptationFemaleFree Radical ScavengersMagnetic Resonance ImagingMaleMiceMice, Inbred C57BLMice, KnockoutOxidative StressRetinaRetinal Pigment EpitheliumTomography, Optical CoherenceFree Radical Scavengers

Identifiers

PMID26886890
PMCPMC4771178
OpenAlexW2397982573

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.