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Two-dimensional self-assembly of melem and melemium cations at pH-controlled aqueous solution-Au（111） interfaces under electrochemical control

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Frontiers of Chemical Science and Engineering 2016年第2期10卷 294-300页

作者： Shinobu Uemura Kenki Sakata Masashi Aono yusuke nakamura Masashi Kunitake Department of Advanced Materials Sciences Faculty of Engineering Kagawa University Kagawa 761-0396 Japan Graduate School of Science and Technology Kumamoto University Kumamoto 860-8555 Japan

Two-dimensional self-assembly of melem at pH-controlled aqueous solution-Au（111） interfaces has been investigated by electrochemical scanning tunneling microscopy. In the solutions with pH 〉 pKbl of melem, two ordered self-assembled structures （honeycomb and close-packed structures） and one disordered fibrillar structure were observed as a function of the surface coverage ofmelem controlled by the electrode potential. In contrast, in the acidic solution with pH 〈 pKbl of melem, only the self-assembled honeycomb network was observed in a relatively wide potential range probably due to the presence of monoprotonated melem cations. Dots attrib- uted to counteranions were frequently observed in the pores of the honeycomb network. The lack of close-packed and fibrillar structures at low pH （〈 pKbl） is attributed to ionic repulsion of melemium cations.

关键词： self-assembly scanning tunneling micro-scopy electrochemistry structural phase transition melem

Postoperative complications of umbilical loop colostomy for anorectal malformations in neonates compared with the conventional abdominal stoma: a non-randomized study

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World Journal of Pediatric Surgery 2019年第1期2卷 21-23页

作者： Tatsuma Sakaguchi Yoshinori Hamada Takeshi Shirai Hiroshi Hamada yusuke Shigeta yusuke nakamura Takashi Doi Department of Surgery Kansai Medical UniversityOsakaJapan

background We previously reported a pilot study of temporary umbilical loop colostomy for neonates with intermediate-type anorectal malformations(ARM)and recommended this technique because of its cosmetic *** herein report the postoperative complications of umbilical stomas(US)compared with traditional abdominal stomas(AS).Methods From our institutional prospective database,we analyzed the patients with ARMs who underwent stoma creation at Kansai Medical University Hospital from January 1995 to November *** surgical technique used to create the US had been performed since *** US and AS were made for 12 and 27 patients with ARMs,*** postoperative complication rates in patients who underwent US and AS had no significant difference(17%and 11%,p=0.6).The complications comprised a wound infection(one case of US),ileus(one case each of US and AS),mucosal prolapse(one case of AS),and depression(one case of AS).No emergency surgery was required for these *** For patients with ARMs,the umbilicus appears to be a safe alternative site for temporary loop colostomy.

关键词： complications abdominal wound

A Possible Mechanism of Cisplatin-Induced Tumor Necrosis Factor (TNF)-α Production in Murine Macrophages

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Pharmacology & Pharmacy 2013年第2期4卷 146-151页

作者： Seikou Kim Kouichi Yamamoto yusuke nakamura Yuichi Otoyo Atsushi Yamatodani Laboratory of Pharmacology Department of Medical Science and Technology Division of Health Science Graduate School of Medicine Osaka University Osaka Japan

Cisplatin has been used for the treatment of various solid cancers or sarcomas;however, it can induce severe adverse effects. Among these adverse effects, nephrotoxicity, which has the potential to be a dose-limiting factor of this agent, develops due to the secretion of tumor necrosis factor-α (TNF-α) from macrophages;however, the precise mechanisms are still unclear. To elucidate possible mechanisms, we investigated the involvement of mitogen-activated protein kinases (MAPK) and reactive oxygen species (ROS) in cisplatin-induced TNF-α mRNA expression and protein production in the mouse macrophage-like cell line, RAW 264. Cisplatin (1 μM) significantly increased TNF-α mRNA expression and protein production. Extracellular-regulated kinase (ERK) and p38 MAPK, but not c-Jun N-terminal kinase (JNK), phosphorylation increased in response to cisplatin. Although an ERK inhibitor (PD98059) suppressed both cisplatin-induced TNF-α mRNA expression and its protein production, a p38 MAPK inhibitor (SB203580) decreased TNF-α protein production only. A JNK inhibitor (SP600125) had no effect on cisplatin-induced TNF-α mRNA expression. Furthermore, a scavenger of ROS, N,N’-dimethylthiourea, suppressed both ERK activation and TNF-α mRNA expression. These results suggest that the phosphorylation of ERK by ROS is involved in cisplatin-induced TNF-α mRNA expression and that the signaling pathway of p38 MAPK is related to TNF-α protein production.

关键词： Cisplatin Reactive Oxygen Species (ROS) Macrophage RAW264 MAPK TNF-α

Rocket Propulsion Powered Using a Gyrotron

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Journal of Energy and Power Engineering 2017年第6期11卷 363-371页

作者： Masafumi Fukunari Kimiya Komurasaki yusuke nakamura Yasuhisa Oda Keishi Sakamoto Research Center for Development of Far-Infrared Region University of Fukui Fukui 910-8507 Japan Department of Aeronautics & Astronautics University of Tokyo Bunkyo Tokyo 113-8656 Japan Graduate School of Frontier Sciences University of Tokyo Kashiwa Chiba 277-8561 Japan National Institutes for Quantum and Radiological Science and Technology Naka Ibaraki 311-0193 Japan

Abstract： This paper presents a review of a beamed energy propulsion rocket, the Microwave Rocket, WlllCn proauces propmslve thrust from millimeter-wave beams transferred from the ground. The thrust is generated through millimeter-wave discharge driven in a cylindrical thruster. As a high-power millimeter-wave generator, a Gyrotron is promising as the beam source. The salient benefit of Microwave Rockets is the resultant drastic cost reduction of mass transportation into space. We have already conducted launch experiments and have achieved continuous thrust generation under multi-pulse operation. Recently, a long-distance beam transfer system has been developed. Ignition tests have been conducted. The physics of the millimeter-wave discharge remain unclear. Additional studies using exoerimentation and calculations must be conducted to optimize the thrust generation.

关键词： Beamed energy propulsion microwave discharge wireless power transfer gyrotron.

Comic Image Category Classification Using SIFT Features

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通讯和计算机（中英文版） 2012年第4期9卷 414-421页

作者： yusuke In nakamura Kentaro Masakazu Higuchi Jonah Gamba Atushi Koike Hitomi Murakami Seikei University 3-3-1 Kitijyoujikitamati musashino Tokyo Japan

Influence of DAP1 Genotype and Psychosocial Factors on Posttraumatic Stress Disorder in Thai Tsunami Survivors: A GxE Approach

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Open Journal of Genetics 2019年第3期9卷 65-75页

作者： Nuntika Thavichachart Prathan Rutchatajumroon Taisei Mushiroda Anchalee Prasansuklab Sookjaroen Tangwongchai Puangsoi Worakul Buranee Kanchanatawan Siriluck Suppapitiporn Atapol Sughondhabirom Chutima Roomruangwong Ongart Charoensook Wasun Chantratita Atsushi Takahashi Michiaki Kubo Naoyuki Kamatani yusuke nakamura Department of Psychiatry Faculty of Medicine Chulalongkorn University Bangkok Thailand Thailand Center of Excellence for Life Sciences (Public Organization) Ministry of Science and Technology Bangkok Thailand Laboratory for Pharmacogenetics RIKEN Center for Genomic Medicine Kanagawa Japan College of Public Health Sciences Chulalongkorn University Bangkok Thailand Center for Medical Genomics Ramathibodi Hospital Mahidol University Bangkok Thailand Laboratory for Statistical Analysis RIKEN Center for Genomic Medicine Kanagawa Japan Laboratory for Genotyping Development RIKEN Center for Genomic Medicine Kanagawa Japan Laboratory of Molecular Medicine Human Genome Center Institute of Medical Science The University of Tokyo Tokyo Japan

Background: Posttraumatic Stress Disorder (PTSD) is a psychiatric disorder found in individuals afflicted by a traumatic event including the natural disaster. “Tsunami” occurred in Andaman coast of Thailand on December 26, 2004, in which 33.6% of survivors were diagnosed as PTSD. This study aimed to explore the single nucleotide polymorphism (SNP). rs267943 genotype is located on chromosome 5 in the intron of the death-associated protein 1 (DAP1) gene and psychosocial factors for PTSD. Methods: Participants (N = 1970) were recruited from volunteers who have complete data both of DAP1 gene and psychosocial factor. Results: Using a binary logistic regression model, significant gene-environment interactions were found for the single nucleotide polymorphism (SNP) rs267943 and psychosocial factors including depression (adj. OR = 6.0, 95% CI = 4.29 - 8.39), neurotic personality (adj. OR = 2.73, 95% CI = 2.18 - 3.42), planning (adj. OR = 1.52, 95% CI = 1.20 - 1.93), use of emotional support (adj. OR = 1.32, 95% CI = 1.21 - 1.94) with statistical significant p Conclusion: This study demonstrated that GxE studies can be utilized to shed light on the origins of PTSD.

关键词： Death-Associated Protein 1 Gene (DAP1) Gene-by-Environment Interaction (GxE) Genetype Posttraumatic Stress Disorder (PTSD) Psychosocial Factors Tsunami

Genome-Wide Association Study in Thai Tsunami Survivors Identified Risk Alleles for Posttraumatic Stress Disorder

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Open Journal of Genetics 2015年第2期5卷 43-57页

作者： Nuntika Thavichachart Taisei Mushiroda Thongchai Thavichachart Ongart Charoensook Anchalee Prasansuklab Prathan Rutchatajumroon Sookjaroen Tangwongchai Puangsoi Worakul Buranee Kanchanatawan Siriluck Suppapitiporn Atapol Sughondhabirom Chutima Roomruangwong Wasun Chantratita Atsushi Takahashi Michiaki Kubo Naoyuki Kamatani yusuke nakamura Department of Psychiatry Faculty of Medicine Chulalongkorn University Bangkok Thailand Laboratory for Pharmacogenetics RIKEN Center for Genomic Medicine Kanagawa Japan Thailand Center of Excellence for Life Sciences (Public Organization) Ministry of Science and Technology Bangkok Thailand Ph.D. Program in Clinical Biochemistry and Molecular Medicine Department of Clinical Chemistry Faculty of Allied Health Sciences Chulalongkorn University Bangkok Thailand Department of Pathology Faculty of Medicine Mahidol University Bangkok Thailand Laboratory for Statistical Analysis RIKEN Center for Genomic Medicine Kanagawa Japan Laboratory for Genotyping Development RIKEN Center for Genomic Medicine Kanagawa Japan Laboratory of Molecular Medicine Human Genome Center Institute of Medical Science The University of Tokyo Tokyo Japan

Posttraumatic stress disorder (PTSD) is a psychiatric disorder found in individuals afflicted by a traumatic event. Multiple environmental and genetic factors can contribute to PTSD susceptibility. Since it is rare to find members of the same family afflicted by the same catastrophic event, it is not practical to determine PTSD susceptibility genes by a gene linkage analysis. A natural disaster, such as the 2004 Tsunami, provided us with a rare chance for a genetic analysis of PTSD. To identify SNPs associated with PTSD susceptibility, we conducted a genome-association study (GWAS) in Thai-Tsunami survivors. Initial phase of the study with 396 chronic PTSD patients and 457 controls, we identified top ninety SNPs (P -4), which were further assessed in the second phase with 395 chronic PTSD patients and 798 controls. Two SNPs (rs267950 and rs954406), were identified in the second phase, and subjected to fine mapping using a data set from both phases. SNP rs267943 showed the strongest association with PTSD susceptibility and was in complete linkage disequilibrium with SNP rs267950 with P = 6.15 × 10-8, OR = 1.46 and 95% CI = 1.19 - 1.79, reaching genome-wide significance. SNP rs267943 is located on chromosome 5 in the intron of the death-associated protein 1 (DAP1) gene and, when linked to a synthetic promoter, could regulate transcription. To our knowledge, this is the first GWAS for PTSD susceptibility in an Asian population which could provide an important insight into the genetic contribution of PTSD and may lead to new treatment strategies for PTSD.

关键词： Death-Associated Protein 1 Gene (DAP1) Genetics Genome-Wide Association Study (GWAS) Posttraumatic Stress Disorder (PTSD) Tsunami

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药物基因组学与不良反应

中国处方药 2008年第9期7卷 8-8页

作者： yusuke nakamura 黄艳

遗传变异可使个体对药物的反应过于敏感,从而产生严重不良反应。通过检测遗传变异可判断患者是否应避免使用某种药物或调整药物的剂量。

关键词：药物基因组学严重不良反应遗传变异

Design Study of Top Lid with Clamp Structure in JT-60SA Cryostat

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Plasma Science and Technology 2013年第2期15卷 188-191页

作者： Shigetoshi nakamura yusuke K. SHIBAMA Kei MASAKI Akira SAKASAI Japan Atomic Energy Agency Mukouyama 801-1 Naka Ibaraki 311-0193 Japan

JT-60SA is a fully superconducting coil tokamak upgraded from the JT-60U. This paper focused on the integrity of the top lid of cryostat in JT-60SA. The design requirement for the cryostat in normal operations is to achieve vacuum insulation of 10-1 Pa, and the top flange of the top lid is lightly welded onto its body flange. The weld is tensile-loaded by bending deformation of the top lid due to vacuum pressure of external 0.1 MPa. This weld integrity is evaluated with tensile-load reduction, which results in clamp reinforcement. The structural integrity of the top lid is validated.

关键词： clamp vacuum insulation top lid cryostat JT-60SA