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Zhong, Rongzhen,Xiao, Wenjun,Ren, Guopu,Zhou, Daowei,Tan, Chuanyan,Tan, Zhiliang,Han, Xuefeng,Tang, Shaoxun,Zhou, Chuanshe,Wang, Min Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.12
The beneficial effects of tea catechins (TCs) are related not only to their antioxidant potential but also to the improvement of animal meat quality. In this study, we assessed the effects of dietary TC supplementation on plasma biochemical parameters, hormone responses, and glutathione redox status in goats. Forty Liuyang goats were randomly divided into four equal groups (10 animals/group) that were assigned to four experimental diets with TC supplementation at 4 levels (0, 2,000, 3,000 or 4,000 mg TC/kg DM feed). After a 60-day feeding trial, all goats were slaughtered and sampled. Dietary TC treatment had no significant effect on blood biochemical parameters, however, low-density lipoprotein cholesterol (p<0.001), triglyceride (p<0.01), plasma urea nitrogen (p<0.01), and glucose (p<0.001) decreased and total protein (p<0.01) and albumin (p<0.05) increased with the feeding time extension, and day 20 was the turning point for most of changes. Interactions were found in glutathione (p<0.001) and the ratio of reduced and oxidized glutathione (p<0.05) in whole blood between treatment and feeding time. Oxidized glutathione in blood was reduced (p<0.05) by 2,000 mg TC/kg feed supplementation, and a similar result was observed in longissimus dorsi muscle. Though plasma glutathione peroxidase (p<0.01) and glutathione reductase (p<0.05) activities were affected by treatment and feeding time interactions, and glutathione S-transferases activity increased with feeding day extension, no changed values appeared in longissimus dorsi muscle. In conclusion, dietary TC supplementation affected the concentrations of some blood metabolites and accelerated GSH depletion in the blood of goats. In terms of less high-density lipoprotein cholesterol, the highest insulin and IGF-I concentrations, the highest ratio of reduced and oxidized glutathione in plasma, the dosage of 2,000 mg TC/kg feed might be desirable for growing goats to prevent glutathione depletion and keep normal physiological metabolism.
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Cheng Zhao,Qiongyuan Hu,Xiuwen Wu,Guopu Chen,Hua Wu,Jianan Ren 한국고분자학회 2019 Macromolecular Research Vol.27 No.9
Previous studies have established that sole probiotics or fibre could be used to relieve colitis. However, few studies evaluated the synergistical effect of fibre and probiotics in treating colitis. This study, examined the effect of alginate, one of the commonest biomaterials and dietary fibre, and/or probiotics on the gut barrier in colitis mice. A synergistical effect was found between alginate and probiotics in colitis. Dextran sulfate sodium salt (DSS), a chemical toxic substance, was used to induce colitis model. Body weight, oxidative stress, inflammatory factors, gut barrier, intestinal morphology and the apoptosis of intestine epithelial cells were analyzed. A combination of probiotics and alginate was used to analyze their synergistic effect. The results showed that the combination of alginate and probiotics had a better therapeutic effect on colitis than using them individually, and they protected the gut barrier from DSS induced oxidative stress. The combination exhibited a greater ability in reducing pro-inflammatory factors and protecting the gut barrier from further damage. The synergistic effect of alginate and probiotics provides a great prospect for biotherapy in bowel diseases and oral drug delivery system.
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