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Browsing by Author Yukihiro, Shoyama

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    • Magnolin Enhances Melanogenesis in Melanoma Cells and Three-Dimensional Human Skin Equivalent
    Authors: Takuhiro, Uto; Nguyen, Huu Tung; Tomoe, Ohta; Yukihiro, Shoyama;  Advisor: -;  Co-Author: - (2022)

    Magnoliae Flos is a traditional herbal medicine used to treat nasal congestion associated with headache, empyema, and allergic rhinitis. In our preliminary screening of crude drugs used in Japanese Kampo formulas for melanin synthesis, the methanol extract of Magnoliae Flos was found to exhibit strong melanin synthesis activity. However, there have been no studies evaluating the effects of Magnoliae Flos or its constituents on melanogenesis. The present study aimed to isolate the active compounds from Magnoliae Flos that activate melanin synthesis in melanoma cells and three-dimensional human skin equivalent, and to investigate the molecular mechanism underlying melanin induction. The...
    • Magnolin Enhances Melanogenesis in Melanoma Cells and Three-Dimensional Human Skin Equivalent
    Authors: Takuhiro, Uto; Nguyen, Huu Tung; Tomoe, Ohta; Yukihiro, Shoyama;  Advisor: -;  Co-Author: - (2022)

    Magnoliae Flos is a traditional herbal medicine used to treat nasal congestion associated with headache, empyema, and allergic rhinitis. In our preliminary screening of crude drugs used in Japanese Kampo formulas for melanin synthesis, the methanol extract of Magnoliae Flos was found to exhibit strong melanin synthesis activity. However, there have been no studies evaluating the effects of Magnoliae Flos or its constituents on melanogenesis. The present study aimed to isolate the active compounds from Magnoliae Flos that activate melanin synthesis in melanoma cells and three-dimensional human skin equivalent, and to investigate the molecular mechanism underlying melanin induction. The...
    • Preventing Dementia Using Saffron, The Kampo Medicine, Kamiuntanto, and Their Combination, Kamiuntantokabankoka
    Authors: Kenny, Kuchta; Kosuke, Aritake; Yoshihiro, Urade; Nguyen, Huu Tung; Chun, Su Yuan; Yui, Sasaki; Koichi, Shimizu; Yukihiro, Shoyama;  Advisor: -;  Co-Author: - (2022)

    The objective of this review is to evaluate the anti-dementia activities of saffron and its combination with Kampo medicine. The Kampo formula Kamiuntanto composed of 13 crude drugs is well known for its anti-dementia activity. A significant increase in choline acetyltransferase activity and mRNA levels were observed. Polygala radix was identified as the most essential component drug in Kamiuntanto, probably due to the saponins, tenuifolin, and sinapinic acid. Ginseng was also identified as an essential Kamiuntanto component in terms of its synergistic functions with Polygala radix. Saffron, which was recommended in the Bencao Gangmu for memory and dementia, and is used as an anti-spa...