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International Journal of Medicinal Mushrooms
Facteur d'impact: 1.423 Facteur d'impact sur 5 ans: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2020034560
pages 417-429

Extracellular Polysaccharopeptides from Fermented Turkey Tail Medicinal Mushroom, Trametes versicolor (Agaricomycetes), Mitigate Oxidative Stress, Hyperglycemia, and Hyperlipidemia in Rats with Type 2 Diabetes Mellitus

Hui-Chen Lo
Department of Nutritional Science, Fu Jen Catholic University, #510, JhongZheng Rd., Xinzhuang District, New Taipei City, 24205, Taiwan, ROC
Tai-Hao Hsu
Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.); Department of Bioindustry Technology, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.); bDepartment of Food Science and Biotechnology, Da-Yeh University, Taiwan, R.O.C
Chien-Hsing Lee
School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan R.O.C.; Division of Pediatric Surgery, Department of Surgery, China Medical University Children's Hospital, Taichung, 40402, Taiwan R.O.C.


The antihyperglycemic activity of extracellular polysaccharopeptides (ePSP) obtained from Trametes versicolor (TV) strain LH-1 has been reported to increase cellular glucose uptake in HepG2 cells in an insulin-independent manner. Evidence indicates that oxidative stress plays a pivotal role in the development of diabetic complications. We aimed to use an in vivo model to investigate the effects of TV-ePSP on oxidative stress and glucose homeostasis in type 2 diabetes mellitus (T2DM). Male Wistar rats fed with a high fat diet followed by a streptozotocin injection to induce T2DM were orally administered water or 0.1, 0.5, or 1.0 g/kg of TV-ePSP per day. After a 4-week administration of TV-ePSP, T2DM rats had attenuated elevations in blood glucose levels, areas under the curve in oral glucose tolerance tests, insulin resistance indices, and serum fructosamine and triglyceride in a dose-dependent manner (P < 0.05, one-way ANOVA). In addition, TV-ePSP significantly alleviated oxidative stress in T2DM rats, as shown by the decreased lipid peroxidation and the increased activity of superoxide dismutase in the plasma, and by the elevated glutathione levels in the plasma and erythrocytes. The antihyperglycemia and antihypertriglyceridemia activities of TV-ePSP may be associated with the improved oxidative stress, suggesting the beneficial effects of TV-ePSP in preventing the development of diabetic complications in T2DM patients.


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