- 著者
- Nobutomo Ikarashi Naoki Ogiue Eri Toyoda Marina Nakamura Risako Kon Yoshiki Kusunoki Takashi Aburada Makoto Ishii Yoshikazu Tanaka Yoshiaki Machida Wataru Ochiai Kiyoshi Sugiyama
- 出版者
- The Pharmaceutical Society of Japan
- 雑誌
- Biological and Pharmaceutical Bulletin (ISSN:09186158)
- 巻号頁・発行日
- vol.36, no.10, pp.1615-1621, 2013-10-01 (Released:2013-10-01)
- 参考文献数
- 46
- 被引用文献数
- 12 14
Aquaporin-3 (AQP3) plays an important role in maintaining the normal water content of the skin. Previously, we revealed that the expression of cutaneous AQP3 increased following oral administration of Gypsum fibrosum (main component: CaSO4) to mice. The purpose of this study is to elucidate the mechanism by which Gypsum fibrosum increases the expression of cutaneous AQP3 in a keratinocyte cell line. Gypsum fibrosum or CaSO4 was added to keratinocytes, and the expression level of AQP3, the Ca concentration, the activity of protein kinase C (PKC), and the degrees of phosphorylation of both extracellular signal-regulated kinase (ERK) and cAMP response element binding protein (CREB) were measured. The mRNA and protein expression levels of AQP3 increased significantly 6 h-post addition of Gypsum fibrosum. In keratinocytes treated with Gypsum fibrosum, increases in the concentration of intracellular Ca, PKC activity, and the phosphorylation of ERK and CREB were observed. Pre-treatment with GF109203X, a PKC inhibitor, suppressed the mRNA expression levels of AQP3. Similarly to treatment with Gypsum fibrosum, the addition of CaSO4 led to the same observations in keratinocytes. It is hypothesized that Gypsum fibrosum causes an increase in the intracellular Ca concentration, PKC activity, and the phosphorylation levels of ERK and CREB, resulting in increased AQP3 expression in keratinocytes. In addition, it is possible that the effect of Gypsum fibrosum is attributable to CaSO4, based on the results demonstrating that the mechanisms of action of Gypsum fibrosum and CaSO4 were nearly identical.
- 著者
- Ryotaro Bouchi Kazuo Izumi Hiroshi Ohtsu Kengo Miyo Shigeho Tanaka Noriko Satoh-Asahara Kazuo Hara Masato Odawara Yoshiki Kusunoki Hidenori Koyama Takeshi Onoue Hiroshi Arima Kazuyo Tsushita Hirotaka Watada Takashi Kadowaki Kohjiro Ueki
- 出版者
- National Center for Global Health and Medicine
- 雑誌
- GHM Open (ISSN:2436293X)
- 巻号頁・発行日
- vol.1, no.1, pp.3-11, 2021-08-29 (Released:2021-09-01)
- 参考文献数
- 30
- 被引用文献数
- 1
The use of the Internet-of-Things has improved glycemic control in individuals with diabetes in several small-scale studies with a short follow-up period. This large-scale randomized controlled trial investigates whether a smartphone-based self-management support system prevents the worsening of glycemic control in individuals with type 2 diabetes. Individuals with type 2 diabetes (age range 20-74 years; n = 2,000) will be recruited, enrolled, and randomly assigned to two groups: the intensive therapy group and the conventional therapy group. Participants in the intensive therapy group will be supervised to use an automated Internet-of-Things system that demonstrates a summary of lifelogging data (e.g., weight, blood pressure, and daily activities) obtained from each measurement device and will receive feedback messages via smartphone applications to encourage them to increase their physical activity and to monitor weight and blood pressure. Participants in the conventional therapy group are allowed to use the same measurement devices as part of the routine diabetes care but without the Internet-of-Things system. The primary endpoint is the between-group difference in HbA1c levels from baseline to 52 weeks. This randomized controlled study will test the hypothesis that an Internet-of-Things-based self-monitoring system could effectively prevent the worsening of diabetes in individuals with type 2 diabetes. The expected results of the study should facilitate the development of novel strategies for both diabetes treatment and social health.