<i><b>Hericium erinaceus</b></i><b> extracts alter behavioral rhythm in </b><b>mice </b>

DOI Web Site PubMed 2 Citations 26 References Open Access
  • FURUTA Shoko
    Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • KUWAHARA Rika
    Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • HIRAKI Eri
    Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • OHNUKI Koichiro
    Department of Biological and Environmental Chemistry, Kinki University
  • YASUO Shinobu
    Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University
  • SHIMIZU Kuniyoshi
    Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University

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<p>Hericium erinaceus (HE), an edible mushroom, has been used as a herbal medicine in several Asian countries since ancient times. HE has potential as a medicine for the treatment and prevention of dementia, a disorder closely linked with circadian rhythm. This study investigated the effects of the intake of HE extracts on behavioral rhythm, photosensitivity of the circadian clock, and clock gene mRNA expression in the suprachiasmatic nucleus (SCN), a central clock, in mice. Although the HE ethanol extract only affected the offset time of activity, the HE water extract advanced the sleep–wake cycle without affecting the free-running period, photosensitivity, or the clock gene mRNA expression in SCN. In addition, both extracts decreased wakefulness around end of active phase. The findings of the present study suggest that HE may serve as a functional food in the prevention and treatment of Alzheimer’s disease and delayed sleep phase syndrome.</p>

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