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조규영,Nakamura Akinobu,Oba-Yamamoto Chiho,Tsuchida Kazuhisa,Yanagiya Shingo,Manda Naoki,Kurihara Yoshio,Aoki Shin,Atsumi Tatsuya,Miyoshi Hideaki 대한당뇨병학회 2020 Diabetes and Metabolism Journal Vol.44 No.4
Background: To explore the efficacy and safety of switching from once-daily basal insulin therapy to once-daily pre-meal injection insulin degludec/insulin aspart (IDegAsp) with respect to the glycemic control of participants with type 2 diabetes mellitus (T2DM). Methods: In this multicenter, open-label, prospective, randomized, parallel-group comparison trial, participants on basal insulin therapy were switched to IDegAsp (IDegAsp group; n=30) or continued basal insulin (Basal group; n=29). The primary endpoint was the superiority of IDegAsp in causing changes in the daily blood glucose profile, especially post-prandial blood glucose concentration after 12 weeks. Results: Blood glucose concentrations after dinner and before bedtime were lower in the IDegAsp group, and the improvement in blood glucose before bedtime was significantly greater in the IDegAsp group than in the Basal group at 12 weeks (−1.7±3.0 mmol/L vs. 0.3±2.1 mmol/L, P<0.05). Intriguingly, glycemic control after breakfast was not improved by IDegAsp injection before breakfast, in contrast to the favorable effect of injection before dinner on blood glucose after dinner. Glycosylated hemoglobin significantly decreased only in the IDegAsp group (58 to 55 mmol/mol, P<0.05). Changes in daily insulin dose, body mass, and recorded adverse effects, including hypoglycemia, were comparable between groups. Conclusion: IDegAsp was more effective than basal insulin at reducing blood glucose after dinner and before bedtime, but did not increase the incidence of hypoglycemia. Switching from basal insulin to IDegAsp does not increase the burden on the patient and positively impacts glycemic control in patients with T2DM.
Saito, Yoko,Nakamura, Toshiya,Urushizaka, Mayumi,Kitajima, Yu,Itaki, Chieko,Terashima, Shingo,Hosokawa, Yoichiro The Korean Association for Radiation Protection 2016 방사선방어학회지 Vol.41 No.4
Background: Although nuclear disaster is considered rare, its effects are serious, and we must prepare a system to enable an effective response. Materials and Methods: Since 2010, we have been offering a two-day seminar to provide current nurses and radiological technologists with basic knowledge and train them in radiation emergency medicine (REM) techniques. This training offers lectures to deepen each specialty from the perspective of REM, as well as exercises on ways to handle irradiated and/or contaminated patients. Participants were expected to treat patients according to the concept of REM. Results and Discussion: All participants learn to assess and decontaminate contaminated wounds through drills. The questionnaire survey for participants indicated that participants were satisfied with this training and wanted to attend again. Conclusion: We believe that this training course will provide a valuable opportunity for medical professionals to gain knowledge and expertise in REM.
In vivo genome editing targeted towards the female reproductivesystem
Masahiro Sato,Masato Ohtsuka,Shingo Nakamura,Takayuki Sakurai,Satoshi Watanabe,Channabasavaiah B. Gurumurthy 대한약학회 2018 Archives of Pharmacal Research Vol.41 No.9
The discovery of sequence specific nucleases such as ZFNs, TALENs, and CRISPR/Cas9 has revolutionized genome editing. The CRISPR/Cas9 system has particularly emerged as a highly simple and efficient approach towards generating genome-edited animal models of most of the experimental species. The limitation of these novel genome editing tools is that, till date, they depend on traditional pronuclear injection (PI)-based transgenic technologies developed over the last three decades. PI requires expensive micromanipulator systems and the equipment operators must possess a high level of skill. Therefore, since the establishment of PI-based transgenesis, various research groups worldwide have attempted to develop alternative and simple gene delivery methods. However, owing to the failure of chromosomal integration of the transgene, none of these methods gained the level of confidence as that by the PI method in order to be adapted as a routine approach. The recently developed genome editing systems do not require complicated techniques. Therefore, presently, attention is being focused on non-PIbased gene delivery into germ cells for simple and rapid production of genetically engineered animals. For example, a few reports during the previous 1–2 years demonstrated the use of electroporation (EP) in isolated zygotes that helped to overcome the absolute dependency on PI techniques. Recently, another breakthrough technology called genome editing via oviductal nucleic acids delivery (GONAD) that directly delivers nucleic acids into zygotes within the oviducts in situ was developed. This technology completely relieves the bottlenecks of animal transgenesis as it does not require PI and ex vivo handling of embryos. This review discusses in detail the in vivo gene delivery methods targeted towards female reproductive tissues as these methods that have been developed over the past 2–3 decades can now be re-evaluated for their suitability to deliver the CRISPR/Cas9 components to produce transgenic animals. This review also provides an overview of the latest advances in CRISPR-enabled delivery technologies that have caused paradigm shifts in animal transgenesis methodologies.
Ken Hoshikawa,Ikuo Nakamura,Satoshi Endo,Shingo Mizuniwa,So Makabe,Hiroko Takahashi 한국식물생명공학회 2012 Plant biotechnology reports Vol.6 No.3
Genes encoding pathogenesis-related proteins,such as degrading enzymes of fungal cell wall polysaccharides,have been used to confer enhanced resistance to fungal pathogens of various plants. A new type of endo-bmannanase gene, amn5A, was isolated from alkaliphilic Bacillus strain (JAMB-602) found in deep-sea sediment. The AMN5A mannanase is active over a wide pH range (pH 7–10) and stable at high temperature. In this study,transgenic tobacco plants expressing the amn5A gene were generated using Agrobacterium-mediated transformation. Polymerase chain reaction (PCR) analysis revealed that the amn5A gene was integrated into the genome of transgenic tobacco plants. Southern blot analysis showed that transgenic plants contained 1–6 copies of amn5A transgenes in their genome. Expression of the amn5A transgene was confirmed by reverse transcription-PCR analysis. Leaf extracts from the transgenic plants showed degradation activity of Konjak mannan. Antifungal assay of detached leaves and in vitro whole plantlets indicated that transgenic plants expressing amn5A gene acquired enhanced resistance to the soil-borne pathogenic fungus, Fusarium oxysporum,compared to untransformed control plants.