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Ha-Yull Chung,Mi-Kyong Yoo,Hirokazu Kawagishi 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.3
Extract of water-soluble polysaccharide (CFWx), showing inhibiting activity on α-glucosidase, was prepared from the fruiting bodies of Cordyceps militaris by hot-water extraction, and ethanol precipitation. Chemical characteristics of CFWx were as follows: carbohydrate content 30% including 16% of uronic acid; 51% protein content; monosaccharide composition, Man:Glu:Gal (30:43:27); molecular weight 3-5×10⁴. CFWx was further purified by ion-exchange, gel-permeation, and affinity chromatography and CFWx-AH-α fraction was isolated. Fundamental structure of CFWx-AH-α was deduced as α-(1→4)-Dglucan with α-(1→3)- and/or α-(1→6)-D-glycosidic side chains based on methylation analysis.
Research in the antioxidant of Phellinus linteus mycelia
Nakamura, Tomoyuki,Akiyama, Yukihito,Matsugo, Seiichi,Shibata, Keiji,Kawagishi, Hirokazu Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
Phellinus linteus mycelia have many pharmacological effects, although their pharmacological efficacy principles have not been known yet. In the course of screening for biological activity of the extracts of Phellinus linteus mycelia, we found strong antioxidative activity in some fraction of water-insoluble. Therefore, we tried to isolate the active principle(s) from the extract. The isolation of the active compound was guided by superoxide anion radical scavenging activity. As a result, caffeic acid was isolated as an active compound. The IC$\_$50/ of the compound was 3.05 $\mu$g/ml (16.9$\mu$M).
The Medicinal Mushroom, Grifola gargal, Ameliorates Allergic Bronchial Asthma
Etsuko Harada,Corina N. D’Alessandro-Gabazza,Masaaki Toda,Toshihiro Morizono,Toshiaki Totoki,Taro Yasuma,Kota Nishihama,Tetsu Kobayashi,Toshimitsu Sumiya,Hirokazu Kawagishi,Esteban C. Gabazza 한국식품영양과학회 2018 Journal of medicinal food Vol.21 No.2
Grifola gargal Singer, a medicinal mushroom, has been found to be effective for the prevention and treatment of various chronic inflammatory diseases. However, the effects of G. gargal on allergic diseases are unknown. The present study investigated the effect of G. gargal extract on allergic bronchial asthma. Asthma was induced in mice by ovalbumin sensitization and inhalation. The grade of asthma was compared between mice fed with chow containing G. gargal extract and mice given standard chow. The human mast cell and eosinophilic cell lines were used for in vitro studies. G. gargal extract significantly reduced airway hyperresponsiveness, lung eosinophilic infiltration, lung interleukin (IL)-13 expression, and plasma IgE level and significantly increased IL-10 plasma levels compared to untreated control mice. Spleen regulatory T cells were significantly increased in mice treated with the G. gargal extract compared with untreated control mice. G. gargal extract significantly suppressed expression of cytokines in mast cells and eosinophils compared with control cells. Overall, these observations show that G. gargal extract augments the lung population of regulatory T cells and ameliorates allergic inflammation and airway hyperresponsiveness in mice with allergic bronchial asthma, suggesting the potential therapeutic benefit of G. gargal extract in allergic diseases.