Evidence map›Paper›PMID 20510668›Full record

ArticleArchives of biochemistry and biophysics2010

Chelation of intracellular iron enhances endothelial barrier function: a role for vitamin C?

James M May, Zhi-chao Qu

Abstract read
In one paragraph

Article in Archives of biochemistry and biophysics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.7field-weighted citation impact, top 27% 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

9 citing papers in PubMed, 13 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Review
  9. Article
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, United States. 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 R01 DK050435
6 · The paper itself

Abstract

Ascorbic acid improves endothelial barrier function by decreasing the permeability of endothelial cells cultured on semi-porous membrane filters. This decrease was not due to enhanced collagen synthesis and was mimicked by the collagen synthesis inhibitor ethyl-3,4-dihydroxybenzoic acid (EDHB). Since EDHB is known to chelate intracellular free iron, the effects of two membrane-permeant iron chelators were tested on endothelial permeability. Both 2,2'-dipyridyl and desferrioxamine decreased trans-endothelial permeability in a concentration-dependent manner. Increasing intracellular iron with a chelate of 8-hydroxyquinoline and ferric iron prevented effects of both EDHB and intracellular ascorbate. That EDHB and ascorbate did in fact chelate intracellular iron was supported by finding that they both decreased the cellular fluorescence quenching of the iron-sensitive dye Phen green SK. These results show that chelation of intracellular iron decreases endothelial barrier permeability and implicate this mechanism in the ability of EDHB and possibly intracellular ascorbate to tighten the endothelial barrier.

Indexed as

2,2'-DipyridylAscorbic AcidCapillary PermeabilityCell LineColchicineCollagenCytochalasin BCytoskeletonDeferoxamineEndothelial CellsFluorescent DyesGlutathioneHumansHydroxybenzoatesInulinIron2,2'-DipyridylAscorbic AcidColchicineCollagenCytochalasin BDeferoxamineethyl protocatechuateFluorescent DyesGlutathioneHydroxybenzoatesInulinIronIron Chelating AgentsOrganic ChemicalsOxyquinolinePhen Green SK

Identifiers

PMID20510668
PMCPMC2904406
OpenAlexW2063957419

What OpenQuestion holds

Textmetadata
LicenceTDM
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.