Abstract
Arteriovenous fistula is the best choice for vascular access in hemodialysis patients. However, arteriovenous fistula dysfunction is a major clinical issue. The most common cause of arteriovenous fistula failure is intimal hyperplasia. In this study, we have investigated the effect of N-acetylcysteine on neo-intimal hyperplasia after arteriovenous fistula creation in rats. This study was conducted in 24 rats which were randomly divided into two groups: control and N-acetylcysteine groups. An end-to-side anastomosis was made between the femoral artery and vein. The control group received distilled water intraperitoneally while the animals in N-acetylcysteine group received 300 mg/kg/day of N-acetylcysteine via the same route. After 28 days, the thickness of intima and media was measured using hematoxylin and eosin. There was no significant difference between the two groups regarding age ( p = 0.6) and weight ( p = 0.1). The mean intima thickness in N-acetylcysteine group was significantly less than control group (17 ± 20 and 119 ± 46 µm, respectively; p < 0.001). The mean intima/media thickness in the N-acetylcysteine group was significantly less than control group (0.5 ± 0.63 vs 2.05 ± 1.17 µm; p < 0.001). N-acetylcysteine is effective in inhibiting neo-intimal hyperplasia in a rat model of arteriovenous fistula.
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