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Hiroshi Shimoda,Shuko Terazawa,Shoketsu Hitoe,Junji Tanaka,Seikou Nakamura,Hisashi Matsuda,Masayuki Yoshikawa 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.12
Ceramides (Cer) and glucosylceramides (GlcCer) play an important role in moisturizing the epidermis. Dietary GlcCer has been reported to improve transepidermal water loss (TEWL). However, the effect of GlcCer on epidermal Cer and GlcCer has not been well established. Therefore, we prepared a GlcCer-rich fraction (GCFr) from rice and evaluated its effect on TEWL and epidermal Cer and GlcCer in mice. In addition, we examined the effect of GlcCer (d18:2) contained in GCFr on the changes in Cer and GlcCer in a human epidermal equivalent. Oral dosing of GCFr (3 and 10 mg/[kg·day]) improved TEWL treated with sodium dodecyl sulfate. In the skin, epidermal Cer 1 was increased, and GlcCer (esterified ω-hydroxy fatty acid and sphingosine [EOS]) and a complex mixture of GlcCer (NS), (NP), and (C24,26-AS), known as GlcCer A/B were decreased by the GCFr. These changes were accompanied with the enhancement of glucosylceramide synthase (GCSase) and glucocerebrosidase expression. On the other hand, GlcCer (d18:2) increased Cer 1, Cer 2, GlcCer (EOS), and GlcCer A/B in a human epidermal equivalent accompanied with expression of GCSase and epidermal maturation markers. These results suggest that oral dosing of rice-derived GlcCer can compensate for epidermal loss of Cer by enhancing epidermal GlcCer metabolism. Rice-derived GlcCer may improve epidermal water loss and barrier function.
Hiroshi Shimoda,Shao-Jie Shan,Junji Tanaka,Azusa Seki,서정욱,Naoki Kasajima,Satoru Tamura,Yan Ke,Nobutoshi Murakami 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.1
Red ginger (Zingiber officinale var. Rubra) has been prescribed as an analgesic for arthritis pain in Indonesian traditional medicine. The surface color of the rhizome is purple because of the anthocyanidins in its peel. We prepared 40% ethanolic extract from dried red ginger (red ginger extract [RGE]) and evaluated its anti-inflammatory activity using acute and chronic inflammation models. In an acetic acid-induced mouse writhing model, RGE (10–100mg/kg) suppressed both the frequency of writhing and the increase in permeability of abdominal capillaries. On the other hand, continuous treatment with RGE (10mg/kg) significantly (P<.05) suppressed footpad edema in a rat adjuvant arthritis model. To clarify the anti-inflammatory mechanism of RGE, we examined the effect on prostaglandin (PG) and nitric oxide (NO) production from mouse leukemic monocytes (RAW264 cells) stimulated by lipopolysaccharide. RGE (3 and 10μg/mL) significantly (P<.05) suppressed PGE2 production, while it also suppressed NO production at 100μg/mL. After bioassay-guided separation of RGE, we found that [6]-shogaol and gingerdiols suppressed NO production. Red dye fractions presumed to be proanthocyanidins also suppressed NO production at 100μg/mL. Consequently, we found a potent suppressive effect of RGE on acute and chronic inflammation, and inhibition of macrophage activation seems to be involved in this anti-inflammatory effect. [6]-Shogaol, gingerdiols, and proanthocyanidins were identified as constituents that inhibited NO production.
Development of an information reference system using reconstruction models of nuclear power plants
Yuki Harazono,Taro Kimura,Hirotake Ishii,Hiroshi Shimoda,Yuya Kouda 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.4
Many nuclear power plants in Japan are approaching the end of their planned operational life spans. They must be decommissioned safely in the near future. Using augmented reality (AR), workers canintuitively understand information related to decommissioning work. Three-dimensional (work-site)reconstruction models of dismantling fields are useful for workers to observe the conditions ofdismantling field situations without visiting the actual fields. This study, based on AR and work-sitereconstruction models, developed and evaluated an information reference system. The evaluation consistsof questionnaires and interview surveys administered to six nuclear power plant workers who usedthis system, along with a scenario. Results highlight the possibility of reducing time and mitigatingmistakes in dismantling fields. Results also show the ease of referring to information in dismantlingfields. Nevertheless, it is apparently difficult for workers to build reconstruction models of dismantlingfields independently
WEIDA YAN,SHUHEI AOYAMA,HIROTAKE ISHII,HIROSHI SHIMODA,TRAN T. SANG,SOLHAUGLARS INGE,TOPPE ALEKSANDER LYGREN,JOHNSEN TERJE,MASANORI IZUMI 한국원자력학회 2012 Nuclear Engineering and Technology Vol.44 No.5
When decommissioning a nuclear power plant, it is difficult to make an appropriate plan to ensure sufficient space for temporary placement and conveyance operations of dismantling targets. This paper describes a system to support temporary placement and conveyance operations using augmented reality (AR). The system employs a laser range scanner to measure the three-dimensional (3D) information of the environment and a dismantling target to produce 3D surface polygon models. Then,the operator simulates temporary placement and conveyance operations using the system by manipulating the obtained 3D model of the dismantling target in the work field. Referring to the obtained 3D model of the environment, a possible collision between the dismantling target and the environment is detectable. Using AR, the collision position is presented intuitively. After field workers evaluated this system, the authors concluded that the system is feasible and acceptable to verify whether spaces for passage and temporary storage are sufficient for temporary placement and conveyance operations. For practical use in the future, some new functions must be added to improve the system. For example, it must be possible for multiple workers to use the system simultaneously by sharing the view of dismantling work.
Yan, Weida,Aoyama, Shuhei,Ishii, Hirotake,Shimoda, Hiroshi,Sang, Tran T.,Inge, Solhaug Lars,Lygren, Toppe Aleksander,Terje, Johnsen,Izumi, Masanori Korean Nuclear Society 2012 Nuclear Engineering and Technology Vol.44 No.5
When decommissioning a nuclear power plant, it is difficult to make an appropriate plan to ensure sufficient space for temporary placement and conveyance operations of dismantling targets. This paper describes a system to support temporary placement and conveyance operations using augmented reality (AR). The system employs a laser range scanner to measure the three-dimensional (3D) information of the environment and a dismantling target to produce 3D surface polygon models. Then, the operator simulates temporary placement and conveyance operations using the system by manipulating the obtained 3D model of the dismantling target in the work field. Referring to the obtained 3D model of the environment, a possible collision between the dismantling target and the environment is detectable. Using AR, the collision position is presented intuitively. After field workers evaluated this system, the authors concluded that the system is feasible and acceptable to verify whether spaces for passage and temporary storage are sufficient for temporary placement and conveyance operations. For practical use in the future, some new functions must be added to improve the system. For example, it must be possible for multiple workers to use the system simultaneously by sharing the view of dismantling work.
Miyu Tanaka,Yuta Yoshino,Shogo Takeda,Kazuya Toda,Hiroshi Shimoda,Kazuhiro Tsuruma,Masamitsu Shimazawa,Hideaki Hara 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.10
Sarcopenia, loss of muscle mass and function, is mainly observed in elderly people. In this study, we investigated whether fermented rice germ extract (FRGE) has some effects on the mouse gastrocnemius muscle by using behavioral and morphological analyses, Western blotting, and a murine model of immobilization-induced muscle atrophy. Daily oral FRGE administration increased muscle weight and strength. In addition, myofiber size in gastrocnemius muscle of FRGE-treated mice was increased as revealed by morphological quantification. Activation of AMP-activated protein kinase (AMPK) signaling, which inhibits protein synthesis and stimulates protein degradation in gastrocnemius muscle, was significantly attenuated in the FRGE-treated mice compared with control mice. Expression level of forkhead box 3a (FOXO3a) protein was also significantly decreased in the FRGE-treated group. Moreover, the decrease in mean myofiber cross-sectional area in immobilized hindlimb in vehicle-treated mice was inhibited by FRGE treatment in histological analysis. In conclusion, FRGE increased the strength and weight of gastrocnemius muscle and myofiber size, and reduced immobilization-induced muscle atrophy in mice. These findings indicated that FRGE might be beneficial in preventing motor dysfunction in a range of conditions, including sarcopenia.