AI Article Synopsis
- LOX-1, a receptor linked to smooth muscle cell (SMC) proliferation, plays a role in neointima formation following vascular injury, such as balloon angioplasty.
- The study found that balloon-induced injury in rat carotid arteries led to significant SMC growth and increased LOX-1 expression, along with markers of oxidative stress.
- Treatment with bergamot essential oil's nonvolatile fraction (BEO-NVF) significantly reduced SMC proliferation and free radical production, highlighting its potential as a natural antioxidant for vascular health.
Article Abstract
Lectin-like oxyLDL receptor-1 (LOX-1) has recently been suggested to be involved in smooth muscle cell (SMC) proliferation and neointima formation in injured blood vessels. This study evaluates the effect of the nonvolatile fraction (NVF), the antioxidant component of bergamot essential oil (BEO), on LOX-1 expression and free radical generation in a model of rat angioplasty. Common carotid arteries injured by balloon angioplasty were removed after 14 days for histopathological, biochemical, and immunohistochemical studies. Balloon injury led to a significant restenosis with SMC proliferation and neointima formation, accompanied by increased expression of LOX-1 receptor, malondialdehyde and superoxide formation, and nitrotyrosine staining. Pretreatment of rats with BEO-NVF reduced the neointima proliferation together with free radical formation and LOX-1 expression in a dose-dependent manner. These results suggest that natural antioxidants may be relevant in the treatment of vascular disorders in which proliferation of SMCs and oxyLDL-related endothelial cell dysfunction are involved.
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| http://dx.doi.org/10.1177/1074248407313821 | DOI Listing |
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