Abstract
This study evaluated the protective effect of flaxseed oil (FO) and flaxseed lignan secoisolariciresinol diglucoside (SDG) against oxidative stress in rats with metabolic syndrome (MS). 48 rats were allocated into the following 6 groups: Groups 1 (control), 5 (FO), and 6 (SDG) received water and were treated daily orally with saline, FO, and SDG, respectively. Groups 2 (MS), 3 (MS+FO), and 4 (MS+SDG) received 30% fructose in drinking water for MS induction and were treated daily orally with saline, FO, and SDG, respectively. After 30 d, animals were sacrificed, and blood was collected for biochemical and oxidative analysis. Body weight was recorded weekly. Systolic blood pressure (SBP) was measured before and after treatment. Fructose could produce MS and oxidative stress. FO and SDG prevented changes in SBP, lipids, and glucose. FO and SDG prevented oxidative damage to lipids, and only FO prevented oxidative damage to proteins associated to MS. FO and SDG improved enzymatic antioxidants defenses and reduced glutathione levels, which was greater with SDG. Total polyphenol levels were enhanced in groups that received SDG. Thus, the results of this study demonstrated that treatment with a 30% fructose solution for 30 d is effecti...Continue Reading
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