Nitric oxide-releasing aspirin decreases vascular injury by reducing inflammation and promoting apoptosis

Jun Yu, Radu Daniel Rudic, William C. Sessa

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Endothelial dysfunction, defined as a deficit in the bioavailability of nitric oxide (NO), occurs as sequelae of many vascular diseases; however, the utility of supplementing NO to obviate the extent of disease is understudied. Here, we examined if prolonged treatment with an NO-releasing form of aspirin (NO-ASA) can influence neointimal remodeling of femoral arteries of hypercholesterolemic ApoE (-/-) mice. Treatment of ApoE (-/-) mice with NO-ASA, but not aspirin (ASA), improved neointimal remodeling post-injury. NO-ASA treatment increased lumen diameters and reduced intimal-to -medial ratios of injured femoral arteries compared with ASA- or vehicle-treated mice. The reduction in lumen diameter in NO-ASA-treated mice was associated with a marked reduction in CD45-positive inflammatory cells and an increased number of TUNEL-positive cells. Thus, NO-ASA, by virtue of releasing NO, can reduce vascular inflammation and promote apoptosis during vascular remodeling associated with neointimal thickening.

Original languageEnglish (US)
Pages (from-to)825-832
Number of pages8
JournalLaboratory Investigation
Volume82
Issue number7
DOIs
StatePublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Molecular Biology
  • Cell Biology

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