Evidence map›Paper›PMID 22047834›Full record

ArticleJournal of vascular surgery2012

Hypercholesterolemia and oxidative stress inhibit endothelial cell healing after arterial injury.

Michael A Rosenbaum, Keiko Miyazaki, Linda M Graham

Abstract read
In one paragraph

Article in Journal of vascular surgery, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

20 citing papers in PubMed, 43 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

3 authors at 2 institutions in 1 country.

Michael A RosenbaumDepartment of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195, USA.
Keiko Miyazaki
Linda M Graham
Cleveland Clinic · USCase Western Reserve University · US

Funding

EFFECT OF LIPIDS ON VASCULAR GRAFT HEALINGR01HL064357 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI GRAHAM, LINDA M · 2000 to 2021
$7.0M
SMOOTH MUSCLE CELLS AND GRAFT INTIMAL HYPERPLASIAR01HL041178 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GRAHAM, LINDA M · 1989 to 2009
$3.3M
Effect of Lipids on Vascular Graft HealingR56HL064357 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI GRAHAM, LINDA M · 2009 to 2009
$465k
Effect of Oxidized Lipids on Endothelial Migration and Vascular Graft HealingF32HL090205 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI ROSENBAUM, MICHAEL AARIC · 2007 to 2008
$101k
RHEOLOGIC &GEOMETRIC FACTORS IN VASCULAR HOMEOSTASISR01HL041187 · NHLBI · MONTREAL GENERAL HOSPITAL · PI KARINO, TAKESHI · 1988 to 1991
–
NHLBI NIH HHS F32 HL090205NHLBI NIH HHS F32HL090205NHLBI NIH HHS HL41187NHLBI NIH HHS HL64357NHLBI NIH HHS R01 HL041178NHLBI NIH HHS R01 HL064357NHLBI NIH HHS R56 HL064357
6 · The paper itself

Abstract

objectiveEndothelial cell (EC) migration is essential for arterial healing after angioplasty. Oxidized low-density lipoproteins and oxidative stress decrease EC migration in vitro. The objective of this study was to determine the effect of hypercholesterolemia and oxidative stress on EC healing after an arterial injury.

methodsC57BL/6 wild-type mice were placed in one of eight groups: chow diet (n = 11), high-cholesterol (HC) diet (n = 11), chow diet plus paraquat (n = 11), HC diet plus paraquat (n = 11), chow diet plus N-acetylcysteine (NAC) (n = 11), HC diet plus NAC (n = 11), chow diet plus paraquat and NAC (n = 11), and HC diet plus paraquat and NAC (n = 11). After 2 weeks on the assigned diet with or without NAC, the carotid artery was injured using electrocautery. Animals in the paraquat groups were given 1 mg/kg intraperitoneally to increase oxidative stress. After 120 hours, Evans Blue dye was infused intravenously to stain the area of the artery that remained deendothelialized. This was used to calculate the percentage of re-endothelialization. Plasma and tissue samples were analyzed for measures of oxidative stress.

resultsThe HC diet increased oxidative stress and reduced EC healing compared with a chow diet, with EC covering 26.8% ± 2.8% and 48.1% ± 5.2% (P < .001) of the injured area, respectively. Administration of paraquat decreased healing in both chow and HC animals to 18.1% ± 3.5% (P < .001) and 9.8% ± 4.6% (P < .001), respectively. Pretreatment with NAC (120 mmol/L in drinking water) for 2 weeks prior to injury, to decrease oxidative stress, improved EC healing to 39.9% ± 5.7% (P < .001) in hypercholesterolemic mice and to 30.7% ± 3.6% (P < .001) in the paraquat group. NAC treatment improved healing to 24.6% ± 3.4% (P < .001) in hypercholesterolemic mice treated with paraquat.

conclusionRe-endothelialization of arterial injuries is reduced in hypercholesterolemic mice and is inversely correlated with oxidative stress. An oral antioxidant decreases oxidative stress and improves EC healing. CLINICAL RELEVANCE: Vascular injury following cardiovascular intervention, including cardiac and peripheral arterial angioplasty and stenting, is associated with inflammation and oxidative stress. Hypercholesterolemia is also associated with increased oxidative stress. Oxidative stress, regardless of the source, induces cellular dysfunction in endothelial and smooth muscle cells that reduce healing after arterial injury. Decreasing oxidative stress with an exogenously administered antioxidant can improve endothelial cell healing, and this is important to control intimal hyperplasia and reduce the thrombogenicity of the vessel.

Indexed as

Cell ProliferationOxidative StressWound HealingAcetylcysteineAnimalsAntioxidantsBiomarkersCarotid Artery, CommonCarotid Artery InjuriesDisease Models, AnimalEndothelial CellsHypercholesterolemiaMaleMiceMice, Inbred C57BLOxidantsAcetylcysteineAntioxidantsBiomarkersOxidantsParaquat

Identifiers

PMID22047834
PMCPMC3264759
OpenAlexW2163127200

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.