ArticleJournal of vascular surgery2010
Antioxidant therapy reverses impaired graft healing in hypercholesterolemic rabbits.
Article in Journal of vascular surgery, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 14 citations in OpenAlex.
- iPLA2 inhibition blocks LysoPC-induced TRPC6 externalization and promotes Re-endothelialization of carotid injuries in hypercholesterolemic mice.Cell calcium · 2023Article
- p85α regulatory subunit isoform controls PI3-kinase and TRPC6 membrane translocation.Cell calcium · 2023Article
- Inhibition of P110α and P110δ catalytic subunits of PI3 kinase reverses impaired arterial healing after injury in hypercholesterolemic male mice.American journal of physiology. Cell physiology · 2021Article
- P110α and P110δ catalytic subunits of PI3 kinase regulate lysophosphatidylcholine-induced TRPC6 externalization.American journal of physiology. Cell physiology · 2021Article
- Apolipoprotein A-I mimetic peptide reverses impaired arterial healing after injury by reducing oxidative stress.Atherosclerosis · 2015Article
- The protective effect of Bcl-xl overexpression against oxidative stress-induced vascular endothelial cell injury and the role of the Akt/eNOS pathway.International journal of molecular sciences · 2013Article
- Oral intake of hydrogen-rich water inhibits intimal hyperplasia in arterialized vein grafts in rats.Cardiovascular research · 2012Article
- Neoatherosclerosis after Drug-Eluting Stent Implantation: Roles and Mechanisms.Oxidative medicine and cellular longevityReview
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
objectiveLimited endothelial cell (EC) coverage and anastomotic intimal hyperplasia contribute to thrombosis and failure of prosthetic grafts. Lipid accumulation and lipid oxidation are associated with decreased EC migration and intimal hyperplasia. The goal of this study was to assess the ability of antioxidants to improve graft healing in hypercholesterolemic animals.
methodsRabbits were placed in one of four groups: chow plus N-acetylcysteine (NAC), chow plus probucol, chow with 1% cholesterol plus NAC, or chow with 1% cholesterol plus probucol. After 2 weeks, expanded polytetrafluoroethylene grafts (12 cm long x 4-mm internal diameter) were implanted in the abdominal aorta. Grafts were removed after 6 weeks and analyzed for cholesterol content, EC coverage, anastomotic intimal thickness, and the cellular composition of the neointima. Plasma samples were obtained to assess systemic oxidative stress. The data were compared with previously reported data from animals fed diets of chow and chow with 1% cholesterol.
resultsProsthetic grafts from rabbits fed chow with 1% cholesterol had significantly greater anastomotic intimal thickening and lower EC coverage than grafts from rabbits fed a regular chow diet. In hypercholesterolemic rabbits, antioxidant therapy decreased global oxidative stress as evidenced by a 40% decrease in plasma thiobarbituric acid reactive substances. In rabbits fed the chow with 1% cholesterol diet, NAC decreased intimal hyperplasia at the proximal anastomosis by 29% and significantly increased graft EC coverage from 46% to 71% (P = .03). Following a similar pattern, probucol decreased intimal hyperplasia by 43% and increased graft EC coverage to 53% in hypercholesterolemic rabbits.
conclusionsGlobal oxidative stress and anastomotic intimal hyperplasia are increased, and endothelialization of prosthetic grafts is significantly reduced in rabbits fed a high-cholesterol diet. Antioxidant treatment improves EC coverage and decreases intimal hyperplasia. Reducing oxidative stress may promote healing of prosthetic grafts.
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