Astaxanthin alleviates renal damage of rats on high fructose diet through modulating NF kappa B/SIRT1 pathway and mitigating oxidative stress

Abstract

This study was conducted to determine the effect of astaxanthin (ASX) treatment on alleviation ofrenal damage in high fructose induced nephrotoxicity in rats. Treatments were arranged in a 2 2 fac-torial fashion: administrations of fructose (30%, via drinking water) and ASX (1 mg/kg/day, within0.2ml olive oil) for 8 weeks. Data were analyzed by two-way ANOVA. The ASX treatment decreasedserum urea (p<.01) and blood urea–N concentrations (p<.02) at a lower extent in rats receiving fruc-tose than those not receiving fructose. Moreover, the ASX treatment reversed the increases in malon-dialdehyde (MDA) (p<.0001) and nuclear factor kappa B (NF-jB) (p<.0003) levels and the decreasesin superoxide dismutase (SOD) activity (p<.0001) and sirtuin-1 (SIRT1) level (p<.0004), in the kidneyupon high fructose consumption. The data suggest that ASX supplementation alleviates renal damageinduced by high fructose consumption through modulating NF-jB/SIRT1 pathway and mitigating oxi-dative stress.