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An animal study for evaluating the dose-dependent effects of fermented mixed grain enzyme food for adiposity and its metabolic disorders in high-fat-diet induced obese mice

ABSTRACT: From a long time ago, supplementation of fermented enzyme foods could have worked health effects on the body in the east nevertheless, only a few studies reported functions of them such as weight loss and metabolic syndrome. Thus, it is necessary to be verified whether supplementation of fermented enzyme foods can act in the body as a functional material. Therefore, we investigated the anti-obesity effects of fermented mixed grain with digestive enzymes (FMG) in high-fat diet induced mice. Sixty C57BL/6J mice were divided into six dietary groups and fed a normal diet (ND), a high-fat diet (HFD), Bacilus Coagulans group, steamed grain group, low-dose fermented mixed grain group(L-FMG), high-dose fermented mixed grain group (H-FMG) supplement for 12 weeks. After sacrificing, body weight and body fat mass in H-FMG group were significantly decreased compared to HFD group with a simultaneous decrease in plasma lipids. Also, H-FMG significantly decreased the blood glucose and improved the glucose tolerance compared to HFD group. Moreover high-dose FMG supplementation dramatically decreased the levels of inflammatory cytokines which secreted from adipocyte. Taken together, our findings suggest that H-FMG ameliorate high fat-diet induced obesity and its complication and could be used as a potential preventive agent for obesity.

ORGANISM(S): Mus musculus

PROVIDER: GSE157822 | GEO | 2020/09/12

REPOSITORIES: GEO

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Project description:Carotenoids are naturally occurring pigments in plants responsible for the orange, yellow, and red color of fruits and vegetables. Carrots are one of the primary dietary sources of carotenoids. The biological activities of carotenoids in higher organisms are well documented in most tissues but not the large intestine. The gastrointestinal barrier acts as a line of defense against the systemic invasion of pathogenic bacteria, especially at the colonic level. Proteins involved in tight junction assembly between epithelial cells and mucus secretion from goblet cells are essential for maintaining intestinal barrier homeostasis. A high-fat diet can cause gut impairment by inducing barrier permeability, leading to low-grade chronic inflammation via metabolic endotoxemia. Our hypothesis for this study is that the dietary intake of carotenoid-rich foods can alleviate obesity-associated gut inflammation and strengthen the intestinal barrier function. Male C57BL/6J mice were randomized to one of four experimental diets for 20 weeks (n = 20 animals/group): Low-fat diet (LFD, 10% calories from fat), high-fat diet (HFD, 45% calories from fat), HFD with white carrot powder (HFD + WC), or HFD with orange carrot powder (HFD + OC). Colon tissues were harvested to analyze the biochemical effects of carotenoids in carrots. The distal sections were subjected to isobaric labeling-based quantitative proteomics in which tryptic peptides were labeled with tandem mass tags, followed by fractionation and LC-MS/MS analysis in an Orbitrap Eclipse Tribrid instrument. High-performance liquid chromatography results depicted that the HFD+WC pellets were carotenoid-deficient, and the HFD+OC pellets contained high concentrations of provitamin A carotenoids, specifically α-carotene and β-carotene. As a result of the quantitative proteomics, a total of 4410 differentially expressed proteins were identified. Intestinal barrier-associated proteins were highly upregulated in the HFD+OC group, particularly mucin-2 (MUC-2). Upon closer investigation into mucosal activity, other proteins related to MUC-2 functionality and tight junction management were upregulated by the HFD+OC dietary intervention. Carotenoid-rich foods may prevent high-fat diet-induced intestinal barrier disruption by promoting colonic mucus synthesis and secretion in mammalian organisms.

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An animal study for evaluating the dose-dependent effects of fermented mixed grain enzyme food for adiposity and its metabolic disorders in high-fat-diet induced obese mice

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