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Akiko Kojima-Yuasa,Isao Matsui-Yuasa 한국식품영양과학회 2020 Journal of medicinal food Vol.23 No.5
1′-Acetoxychavicol acetate (ACA) is found in the rhizomes or seeds of Alpinia galanga and Alpinia conchigera, which are used as traditional spices in cooking and traditional medicines in Southeast Asia. ACA possesses numerous medicinal properties. Those include anticancer, antiobesity, antiallergy, antimicrobial, antidiabetic, gastroprotective, and anti-inflammatory activities. ACA is also observed to exhibit antidementia activity. Recent studies have demonstrated that combining ACA with other substances results in synergistic anticancer effects. The structural factors that regulate the activity of ACA include (1) the acetyl group at position 1′, (2) the acetyl group at position 4, and (3) the unsaturated double bond between positions 2′ and 3′. ACA induces the activation of AMP-activated protein kinase (AMPK), which regulates the signal transduction pathways, and has an important role in the prevention of diseases, including cancer, obesity, hyperlipidemia, diabetes, and neurodegenerative disorders. Such findings suggest that AMPK has a central role in different pharmacological functions of ACA, and ACA is useful for the prevention of life-threatening diseases. However, more studies should be performed to evaluate the clinical effects of ACA and to better understand its potential.
Diversity and origin of bottle gourd, Lagenaria
Yuasa Hiroshi 한국자원식물학회 2002 한국자원식물학회 학술심포지엄 Vol.2002 No.-
In higher dicotyledonous plants, the floral organs are arranged in four different whorls, containing sepals, petals, stamens and carpels. petals, stamens and carpels. The specification of floral organ identity is explained by the ABC model (Weigel and Meyerowitz 1994). Expression of an A-function gene specifies sepal formation in whorl 1. the combination of A-and B-function genes specifies the formation of petals in whorl 2, B-and C-function genes spesify stamen formation in whorl 3, and expression of the C-function alone determines the formation of carpels in whorl 4. A-. B-, C-function genes have been isolated from many plant species and most of them belong to the family of MADS-box genes encoding transcription factor. In contrast to the flower of higher dicots, the perianths of genseng plants have three whorls of almost identical petaloid organs. van Tunen et al. (1993) proposed a modified ABC model, exemplified with tulip. In this model, B-function genes are expressed in whorl 1 as well as whorl 2 and 3, theefore the organs of whorl 1 and whorl 2 have the same petaloid structure. They proposed this model with the molphological data of wild type and mutant flowers of tulip, however, there are no molecular data.(중략)
Diversity and origin of bottle gourd, Lagenaria
Yuasa Hiroshi 한국자원식물학회 2002 한국자원식물학회 학술심포지엄 Vol.2002 No.-
In higher dicotyledonous plants, the floral organs are arranged in four different whorls, containing sepals, stamens and carpels. petals, stamens and carpels. The specification of floral organ identity is explained by the ABC model (Weigel and Meyerowitz 1994). expression of an A-function gene specifies sepal formation in whorl 1. the combination of A-and B-function genes specifies the formation of petals in whorl 2, B-and C-function genes spesify stamen formation in whorl 3, and expression of the C-function alone determines the formation of carpels in whorl 1. A-, B-, C-function genes have been isolated from many plant species and most of them belong to the family of MADS-box genes encoding transcription factor. In contrast to the flower of higher dicots, the perianths of genseng plants have three whorls of almost identical petaloid organs. van Tunen et al. (1993) proposed a modified ABC model, exemplified with tulip. In this model, B-function genes are expressed in whorl 1 as well as whorl 2 and 3, theefore the organs of whorl 1 and whorl 2 have the same petaloid structure. They proposed this model with the molphological data of wild type and mutant flowers of tulip, however, there are no molecular data. To date, B-function genes were isolated several grass plants, rice, wheat and maize. However, grass plants have highly derived flowers, without well-developed perianths. To find out how the ABC model has to be modified for the Genseng plants, we have cloned and characterized orthologs of A-, B-, C-function genes from genseng.
English Textbooks in Japan and Korea
( Katsura Yuasa ) 범태평양응용언어학회 2010 범태평양응용언어학회지 Vol.14 No.1
English education in Japan and Korea are similar in some respects. Although both countries are not completely but mostly monolingual society, where citizens do not need English in their daily life, they have begun to realize the importance of English as a tool for international communication, and as a result their English education is becoming more and more communication-oriented. It seems that Korea is the forerunner in communicative teaching and Japan is following. This report compares English textbooks used at schools in Japan and Korea, which shows a great deal on how English is taught in both countries. Since English is taught as a regular subject for 3rd to 6th grade at elementary schools in Korea but not in Japan (tentatively taught for 5th and 6th grade), the English taught at Korean middle schools (junior high schools) is much more advanced than that of Japan, however, it is not necessarily true of the senior high school level. The goal of English textbooks in each country is slightly different: Koreans aim to express themselves and exchange ideas in English, while Japanese textbooks are designed to arouse learners` interests in foreign culture and to foster their communicative attitude.