Abstract Title:

Antifatigue and antistress effect of the hot-water fraction from mycelia of Cordyceps sinensis.

Abstract Source:

Biol Pharm Bull. 2003 May;26(5):691-4. PMID: 12736514

Abstract Author(s):

Jong-Ho Koh, Kyung-Mi Kim, Jin-Man Kim, Jae-Chul Song, Hyung-Joo Suh


This study was conducted to investigate the chemical component of the hot water (HW) fraction of mycelia of Cordyceps sinensis and its antifatigue and antistress effect against a stimulus in vivo using rats and mice. The growth of mycelia reached a maximum level of 31.6 g/l after 120 h of incubation. The main chemical composition of the HW fraction of mycelia of C. sinensis was found to be carbohydrate (78.9%) with 5% moisture. The swimming endurance capacity of mice orally administered with the HW fraction (150 and 300 mg/kg/d, respectively) was significantly prolonged from 75 to 90 min with a lessening of fatigue. When the HW fraction (150 mg/kg/d) was given to rats for 8 d including a 48 h stress period, the weight changes of the adrenal gland, spleen, thymus, and thyroid, which is an index of stress, were suppressed. The HW fraction also significantly inhibited the increase in total cholesterol and the decrease in alkaline phosphatase levels as biochemical parameters of immobilization stress in rats.

Study Type : Animal Study

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