Evidence map›Paper›PMID 20815791›Full record

ArticleFree radical research2010

Ascorbic acid prevents increased endothelial permeability caused by oxidized low density lipoprotein.

James M May, Zhi-Chao Qu

Open access · greenAbstract read
In one paragraph

Article in Free radical research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.7field-weighted citation impact, top 38% 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

21 citing papers in PubMed, 33 citations in OpenAlex.

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  19. The possible role of antioxidant vitamin C in Alzheimer's disease treatment and prevention.American journal of Alzheimer's disease and other dementias · 2013
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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 1 country.

James M MayDepartment of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232-0475, USA. james.may@vanderbilt.edu
Zhi-Chao Qu
Vanderbilt University · US

Funding

Vanderbilt Diabetes Research CenterP30DK020593 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI OWEN P MCGUINNESS · 2012 to 2026
$29.3M
TRANSGENIC MOUSE/ ES CELL SHARES RESOURCESP60DK020593 · NIDDK · VANDERBILT UNIVERSITY · PI MCGUINNESS, OWEN P · 1986 to 2011
$28.1M
ASCORBIC ACID FUNCTION AND METABOLISMR01DK050435 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI MAY, JAMES M. · 1995 to 2015
$4.0M
NIDDK NIH HHS DK020593NIDDK NIH HHS DK050435NIDDK NIH HHS P30 DK020593NIDDK NIH HHS P60 DK020593NIDDK NIH HHS R01 DK050435
6 · The paper itself

Abstract

Abstract Mildly oxidized low density lipoprotein (mLDL) acutely increases the permeability of the vascular endothelium to molecules that would not otherwise cross the barrier. This study has shown that ascorbic acid tightens the permeability barrier in the endothelial barrier in cells, so this work tested whether it might prevent the increase in endothelial permeability due to mLDL. Treatment of EA.hy926 endothelial cells with mLDL decreased intracellular GSH and activated the cells to further oxidize the mLDL. mLDL also increased endothelial permeability over 2 h to both inulin and ascorbate in cells cultured on semi-permeable filters. This effect was blocked by microtubule and microfilament inhibitors, but not by chelation of intracellular calcium. Intracellular ascorbate both prevented and reversed the mLDL-induced increase in endothelial permeability, an effect mimicked by other cell-penetrant antioxidants. These results suggest a role for endothelial cell ascorbate in ameliorating an important facet of endothelial dysfunction caused by mLDL.

Indexed as

AntioxidantsAscorbic AcidCapillary PermeabilityCell LineEndothelium, VascularHumansLipoproteins, LDLOxidative StressAntioxidantsAscorbic AcidLipoproteins, LDLoxidized low density lipoprotein

Identifiers

PMID20815791
PMCPMC3709463
OpenAlexW2016741849

What OpenQuestion holds

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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.