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International Journal of Medicinal Mushrooms
インパクトファクター: 1.423 5年インパクトファクター: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN 印刷: 1521-9437
ISSN オンライン: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v15.i3.50
pages 277-286

Aqueous Extracts of Cordyceps militaris (Ascomycetes) Lower the Levels of Plasma Glucose by Activating the Cholinergic Nerve in Streptozotocin-Induced Diabetic Rats

Yu-Wen Cheng
College of Life Sciences, National Tsing Hua University, Hsinchu, Taiwan; Department of Internal Medicine, Lee's General Hospital, Miaoli, Taiwan
Ying-I Chen
College of Life Sciences, National Chung Hsing University, Taichung, Taiwan
Chung-Yuh Tzeng
Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan
Chin-Hsien Chang
Department of Traditional Chinese Medicine, En Chu Kong Hospital, Taipei, Taiwan
Yu-Chen Lee
School of Chinese Medicine, China Medical University, Taichung, Taiwan
Hong-Chen Chen
College of Life Sciences, National Chung Hsing University, Taichung, Taiwan
Chin-Chun Tsai
Department of Traditional Chinese Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan; School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung, Taiwan
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.)
Yiu-Kay Lai
College of Life Sciences, National Tsing Hua University, Hsinchu, Taiwan
Shih-Liang Chang
School of Chinese Medicine, China Medical University, Taichung, Taiwan; Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Changhua, Taiwan

要約

In our previous research, Cordyceps militaris (CM) had a hypoglycemic effect in normal rats. In this study we wanted to elucidate whether CM also had an effect on diabetic rats. Twelve rats with streptozotocin-induced diabetes were separated randomly into 2 groups. First, aqueous extracts of CM 10 mg/kg (CM group) or saline (control group) was fed to the rats; then the plasma glucose levels were assayed. Second, the signaling proteins IRS-1 and GLUT-4 collected from the muscle were detected. Finally, another 2 groups of rats were injected with atropine 0.1 mg/kg intraperitoneally just before the CM/saline feeding, and the assays mentioned above were repeated. Blood glucose decreased 7.2% in the CM group but only 1.5% in the control group (P < 0.05). The IRS-1 signal was 2.9-fold higher than actin in the CM group but only 0.8-fold higher in the control group (P < 0.005). In GLUT-4 signal, the difference was 1.7- vs. 0.6-fold, respectively, compared with actin (P < 0.05). However, atropine injection made CM-induced hypoglycemia or elevation of IRS-1 and GLUT-4 not significant. In conclusion, CM had a hypoglycemic effect in diabetic rats and atropine blocked it. Therefore, the cholinergic activation also was considered to be involved in the hypoglycemic effect of CM in rats with streptozotocin-induced diabetes.


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