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国际药用蘑菇期刊
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ISSN 打印: 1521-9437
ISSN 在线: 1940-4344

国际药用蘑菇期刊

DOI: 10.1615/IntJMedMushrooms.v17.i10.50
pages 957-964

Hypoglycemic Activity of Polysaccharide from Fruiting Bodies of the Shaggy Ink Cap Medicinal Mushroom, Coprinus comatus (Higher Basidiomycetes), on Mice Induced by Alloxan and Its Potential Mechanism

Shuai Zhou
Key Laboratory of Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, People's Republic of China; National Engineering Research Centre of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilisation, Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Shanghai, People's Republic of China
Yanfang Liu
National Engineering Research Centre of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilisation, Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Shanghai, People's Republic of China
Yan Yang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Qingjiu Tang
Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Jing-Song Zhang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

ABSTRACT

Three polysaccharide fractions from fruiting bodies of Coprinus comatus−CC30, CC60, and CC80−are obtained by water extraction and ethanol precipitation with ethanol percentages of 30%, 60%, and 80%, respectively. The hypoglycemic activity of the three fractions was tested based on mice with alloxan-induced diabetes. Results indicate that fraction CC60 is the most effective fraction in water extract from C. comatus; it can remarkably reduce the blood glucose concentration in 120 min at a dosage of 1000 mg/kg administered orally. It also presents a long-term hypoglycemic effect during 21 days of injection at the same dosage. This polysaccharide fraction provide a novel path to improve the treatment currently used for patients with diabetes. The data on mice spleen lymphocyte proliferation and protein tyrosine phosphatase 1B (PTP1B)−inhibiting activity of fractions indicate that the hypoglycemic activity of CC60 is possibly activated through immune stimulation, not PTP1B inhibition.


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