期刊
NUTRITION
卷 73, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.nut.2019.110700
关键词
Inflammation; Metalloproteinase; Oxidative stress; Type 2 diabetes mellitus; Whey protein isolate
Objectives: The aim of this study was to evaluate the effects of undenatured whey protein isolate (WPI; >= 92.5%) with a high content of native cysteine (2.7%) and a standardized content of lactoferrin (>= 0.7%) on parameters related to oxidative stress and inflammation in individuals with type 2 diabetes mellitus. Methods: We assigned 120 white patients with type 2 diabetes and glycated hemoglobin >= 6.5% to two groups. The patients were supplemented daily with WPI or placebo for 3 mo. After 3 mo, the markers of oxidation (superoxide dismutase, glutathione peroxidase, glutathione, and reduced glutathione-to-oxidized glutathione ratio) and inflammation (high sensitivity C-reactive protein, interleukin-6, tumor necrosis factor -alpha, malondialdehyde) were significantly lower in the WPI group than in the placebo group (P <0.05). The WPI group obtained a significant improvement in the lipid profile and a reduction in fasting plasma glucose compared with baseline and placebo (P < 0.05). No variations of body weight, body mass index or circumferences and metalloproteinase-2 and -9, or soluble receptor for advanced glycation end product were recorded in either groups. Conclusion: Supplementation with WPI may be useful in patients with diabetes to control fasting glycemia. Moreover, it can help to improve inflammatory and oxidative stress, which play a crucial role in the development of diabetes complications and also in the progression of other chronic diseases. (C) 2019 Elsevier Inc. All rights reserved.
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