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Järvinen J, Zvezdov D, Ahokas J, Sheludiakov S, Lehtonen L, Vasiliev S, Vlasenko L, Ishikawa Y, Fujii Y. Dynamic nuclear polarization and ESR hole burning in As doped silicon. Phys Chem Chem Phys 2020; 22:10227-10237. [PMID: 32352086 DOI: 10.1039/c9cp06859g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an experimental study of the Dynamic Nuclear Polarization (DNP) of 29Si nuclei in silicon crystals of natural abundance doped with As in the temperature range 0.1-1 K and in a strong magnetic field of 4.6 T. This ensures a very high degree of electron spin polarization, extremely slow nuclear relaxation and optimal conditions for realization of Overhauser and resolved solid effects. We found that the solid effect DNP leads to the appearance of a pattern of holes and peaks in the ESR line, separated by the super-hyperfine interaction between the donor electron and 29Si nuclei closest to the donor. On the contrary, the Overhauser effect DNP mainly affects the remote 29Si nuclei having the weakest interaction with the donor electron. This leads to the appearance of a very narrow (≈3 mG wide) hole in the ESR line. We studied relaxation of the holes after burning, which is caused by the nuclear spin diffusion. Analyzing the dynamics of the hole in the spectrum with a simple one-dimensional diffusion model leads to a value of the diffusion coefficient D = 8(3) × 10-9 G2 s-1. Our data indicate that the spin diffusion is not completely prevented even in the frozen core near the donors. The emergence of the narrow hole after the Overhauser DNP may be explained by a partial "softening" of the frozen core caused by decoupling of the donor electron and remote 29Si nuclei.
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Ishikawa Y, Sakata H, Wei Y, Oyama N, Itami T, Sano T, Yamashita K. The effect of transnasal administration of alfaxalone-butorphanol-medetomidine combination in rabbits. Vet Anaesth Analg 2019. [DOI: 10.1016/j.vaa.2019.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tozaki T, Kusano K, Ishikawa Y, Kushiro A, Nomura M, Kikuchi M, Kakoi H, Hirota K, Miyake T, Hill EW, Nagata S. A candidate-SNP retrospective cohort study for fracture risk in Japanese Thoroughbred racehorses. Anim Genet 2019; 51:43-50. [PMID: 31612520 DOI: 10.1111/age.12866] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2019] [Indexed: 11/30/2022]
Abstract
Fractures are medical conditions that compromise the athletic potential of horses and/or the safety of jockeys. Therefore, the reduction of fracture risk is an important horse and human welfare issue. The present study used molecular genetic approaches to determine the effect of genetic risk for fracture at four candidate SNPs spanning the myostatin (MSTN) gene on horse chromosome 18. Among the 3706 Japanese Thoroughbred racehorses, 1089 (29.4%) had experienced fractures in their athletic life, indicating the common occurrence of this injury in Thoroughbreds. In the case/control association study, fractures of the carpus (carpal bones and distal radius) were statistically associated with g.65809482T/C (P = 1.17 x 10-8 ), g.65868604G/T (P = 2.66 x 10-9 ), and g.66493737C/T (P = 6.41 x 10-8 ). In the retrospective cohort study using 1710 racehorses born in 2000, the relative risk (RR) was highest for male horses at g.65868604G/T, based on the dominant allele risk model (RR = 2.251, 95% confidence interval 1.407-3.604, P = 0.00041), and for female horses at g.65868604G/T, based on the recessive allele risk model (RR = 2.313, 95% confidence interval 1.380-3.877, P = 0.00163). Considering the association of these SNPs with racing performance traits such as speed, these genotypes may affect the occurrence of carpus fractures in Japanese Thoroughbred racehorses as a consequence of the non-genetic influence of the genotype on the distance and/or intensity of racing and training. The genetic information presented here may contribute to the development of strategic training programs and racing plans for racehorses that improve their health and welfare.
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Ninomiya H, Ichinose J, Matsuura Y, Nakao M, Mun M, Nishio M, Okumura S, Ishikawa Y. P1.09-20 Significance of Maximal Diameter Measurement in Small-Sized Adenocarcinomas. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ishikawa Y, Koganezaki M, Shimada M, Yoshinuma T, Yamahisa C, Yamada H, Noda H, Yamagou T, Kinoshita M, Hoshikawa T. MON-PO536: Evaluation of Diarrhea Using a Stool Chart and the Validity of the Chart. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32369-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Takahashi N, Matsushita H, Umezawa R, Yamamoto T, Ishikawa Y, Katagiri Y, Tasaka S, Takeda K, Fukui K, Kadoya N, Ito K, Jingu K. Hypofractionated Radiation Therapy for Anaplastic Thyroid Carcinoma: 15 Years of Experience in a Single Institution. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kobayashi D, Asai T, Yamada S, Ishikawa Y, Tamura N, Narushima Y. Development of a tracer-containing compact-toroid injection system. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:10I111. [PMID: 30399862 DOI: 10.1063/1.5039310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/08/2018] [Indexed: 06/08/2023]
Abstract
The accumulation and behavior of impurities is one of the most important subjects in the development of magnetically confined fusion reactors because impurities can potentially cause cooling and worsen the confinement of the hot core plasma. Tracer-encapsulated solid pellets (TESPELs) have demonstrated some results for impurity injection for fusion-reactor plasma studies [N. Tamura et al., J. Phys. Conf. Ser. 823, 012003 (2017)]. However, the TESPEL technique has several shortcomings, for example, the penetration depth and the amounts of tracer impurities. In the present study, we have developed a tracer-containing, compact-toroid (TCCT) injection system that utilizes a magnetized coaxial plasma gun (MCPG). The discharge current through the MCPG sputters and ionizes the electrode material, and the Lorenz self-force accelerates it as a plasmoid. The MCPG easily accelerates a magnetized plasmoid to speeds greater than the ion thermal velocity of several tens of kilometers per second. The accelerated and ejected plasmoid that contains the tracer ions is itself a warm, ionized plasma. Therefore, a TCCT can potentially be injected into the core region of a target plasma with less adverse effect.
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Higashi K, Nishimura T, Baba Y, Ishikawa Y, Hiramine K, Tanaka H, Nuruki N, Sonoda M, Tanaka Y. P3565Clopidorel-based antiplatelet therapy is not enough for stent patency in patients undergoing femoropopliteal arterial endovascular interventions. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Miyazawa H, Fujita Y, Iwata H, Ishikawa Y, Nishio S, Ishijima K, Shinmei Y, Takeichi T, Goto K, Oi R, Akiyama M, Shimizu H. Two cases of generalized pustular psoriasis complicated by IgG4-related disease. Br J Dermatol 2018; 179:537-539. [PMID: 29709076 DOI: 10.1111/bjd.16712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Tan Z, Miao P, Ishikawa Y, Hagihala M, Lee S, Torii S, Yonemura M, Kamiyama T. Synthesis, Structural and Magnetic Properties of La0.5Ba0.5CoO2.75+x. ATOM INDONESIA 2018. [DOI: 10.17146/aij.2018.781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Ishikawa Y, Handa T, Katayama A, Fujii T, Horiguchi J, Iino Y, Fujita T, Oyama T. Caspase14 expression is associated with triple negative phenotypes and cancer stem cell marker expression in breast cancer patients. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30631-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Nakaya Y, Takahashi A, Inoue N, Taniguchi T, Ishikawa Y, Hijikata-Okunomiya A. Inhibitory Effect of Argatroban on Thrombin-induced MAP Kinase Activation. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1615247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Morita J, Aoyama T, Sugano N, Sato T, Amano S, Nagashima T, Ishikawa Y, Taguri M, Yamanaka T, Yamamoto Y, Oshima T, Yukawa N, Rino Y, Masuda M. Randomized phase II study of TJ-54 (Yokukansan) for postoperative delirium in gastrointestinal and lung malignancy patients. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx676.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Miyakoshi N, Kudo D, Hongo M, Kasukawa Y, Ishikawa Y, Shimada Y. Comparison of spinal alignment, muscular strength, and quality of life between women with postmenopausal osteoporosis and healthy volunteers. Osteoporos Int 2017; 28:3153-3160. [PMID: 28785980 DOI: 10.1007/s00198-017-4184-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/30/2017] [Indexed: 01/14/2023]
Abstract
UNLABELLED This study compared spinal alignment, muscular strength, and quality of life (QOL) between women with postmenopausal osteoporosis and healthy volunteers. The results indicated that lower QOL in osteoporosis patients may be associated with increased thoracic kyphosis, reduced lean muscle mass, and generalized muscle weakness. INTRODUCTION Increased spinal kyphosis is common in patients with osteoporosis and negatively impacts quality of life (QOL). Muscular strength is also important for QOL in patients with osteoporosis. However, spinal kyphosis and muscle weakness also occur in healthy individuals with advancing age. The purposes of this study were thus to compare spinal alignment, muscular strength, and QOL between women with postmenopausal osteoporosis and healthy volunteers. METHODS Participants comprised 236 female patients with postmenopausal osteoporosis (mean age, 68.7 years) and 93 healthy volunteer women (mean age, 71.0 years). Body mass index (BMI), angles of spinal kyphosis, back extensor strength, grip strength, and QOL were compared between groups. RESULTS BMI, back extensor strength, and grip strength were significantly higher in the volunteer group than in the osteoporosis group (p < 0.01). Both thoracic kyphosis and lumbar lordosis were significantly greater in the osteoporosis group than in the volunteer group (p < 0.01). With regard to QOL, the 36-Item Short-Form Health Survey (SF-36) subscale scores of role physical, bodily pain, general health, and role emotional were all significantly lower in the osteoporosis group than in the volunteer group (p < 0.05 each). SF-36 physical component summary (PCS) score was significantly lower in the osteoporosis group than in the volunteer group (p < 0.001). SF-36 PCS score correlated positively with thoracic kyphosis and negatively with BMI only in the osteoporosis group (p < 0.05 each). CONCLUSIONS These results indicated that lower QOL in osteoporosis patients may be associated with increased thoracic kyphosis, reduced lean muscle mass, and generalized muscle weakness.
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Mun M, Sakao Y, Ichinose J, Matsuura Y, Nakao M, Nakagawa K, Ninomiya H, Motoi N, Urano Y, Okumura S, Ishikawa Y. P3.13-009 Rapid Detection of Lung Cancer by Fluorescent Imaging Using A γ-Glutamyltranspeptidase-Activatable Fluorescent Probe. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ikeda K, Sawada M, Kyuzen M, Ebina J, Nagasawa J, Yanagihas M, Miura K, Ishikawa Y, Hirayama T, Takazawa T, Kano O, Kawabe K, Iwasaki Y. Transdermal patch of rotigotine ameliorates freezing of gait during wearing off in patients with parkinoson’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yoshiyasu N, Kojima F, Hoshino E, Ishikawa Y, Bando T. P-111HIGHER-THAN-EXPECTED RESIDUAL LUNG VOLUME CHANGES AMONG PATIENTS WHO UNDERWENT ANATOMICAL LUNG RESECTIONS. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ishikawa Y, Nakayama K, Morimoto M, Mizutani A, Nakayama A, Toyoshima K, Hayashi A, Takagi S, Dairiki R, Miyashita H, Matsumoto S, Gamo K, Nomura T, Nakamura K. Synergistic anti-AML effects of the LSD1 inhibitor T-3775440 and the NEDD8-activating enzyme inhibitor pevonedistat via transdifferentiation and DNA rereplication. Oncogenesis 2017; 6:e377. [PMID: 28892104 PMCID: PMC5623902 DOI: 10.1038/oncsis.2017.76] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 06/18/2017] [Accepted: 07/11/2017] [Indexed: 12/12/2022] Open
Abstract
Lysine-specific demethylase 1A (LSD1, KDM1A) specifically demethylates di- and monomethylated histones H3K4 and K9, resulting in context-dependent transcriptional repression or activation. We previously identified an irreversible LSD1 inhibitor T-3775440, which exerts antileukemic activities in a subset of acute myeloid leukemia (AML) cell lines by inducing cell transdifferentiation. The NEDD8-activating enzyme inhibitor pevonedistat (MLN4924, TAK-924) is an investigational drug with antiproliferative activities in AML, and is also reported to induce cell differentiation. We therefore tested the combination of these two agents in AML models. The combination treatment resulted in synergistic growth inhibition of AML cells, accompanied by enhanced transdifferentiation of an erythroid leukemia lineage into granulomonocytic-like lineage cells. In addition, pevonedistat-induced rereplication stress during the S phase was greatly augmented by concomitant treatment with T-3775440, as reflected by the increased induction of apoptosis. We further demonstrated that the combination treatment was markedly effective in subcutaneous tumor xenograft models as well as in a disseminated model of AML, leading to tumor eradication or prolonged survival in T-3775440/pevonedistat cotreated mice. Our findings indicate the therapeutic potential of the combination of LSD1 inhibitors and pevonedistat for the treatment of AML.
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Marui A, Ishikawa Y, Kaneko S, Kamiyama Y, Aizawa N. ASSOCIATION OF SELF-RATED HEALTH IN COMMUNITY-DWELLING ELDERLY PEOPLE OF JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ishikawa Y, Marui A, Kaneko S, Kamiyama Y, Aizawa N. SELF-REPORTED SLEEP, DEMOGRAPHICS, AND HEALTH IN SENIORS IN MIBU, JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nagao N, Tamura Y, Bontje P, Takimoto Y, Hirai M, Ishikawa Y. Different views on treatment decisions by first-year interprofessional healthcare students. J Interprof Care 2017; 31:407-409. [PMID: 28276842 DOI: 10.1080/13561820.2016.1278360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
This study explored ethical treatment decisions of healthcare professional students beginning their education. As part of a first-semester modern medicine and bioethics course, 311 students watched and discussed, in interprofessional groups, a video titled Dax's Case: Who Should Decide? regarding the treatment of a life-threatening infectious disease against Dax's wish. The students then discussed and made their decision regarding treating or not. Their decisions, recorded on a worksheet, were classified as "will treat" or "won't treat." Professional groups' decision patterns were compared using the chi-square test. Overall, 151 (71%) opinions from students were classified as "will treat," and 61 (29%) as "won't treat." Nursing students were more likely to decide "won't treat" (in line with Dax's preference); however, the majority of other professions' students favoured treatment (against Dax's wish). Given the students' limited exposure to profession-specific education, our preliminary study supports the notion that healthcare profession students hold different values that align with their chosen profession at the start of their studies.
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Nishikawa S, Tambo Y, Ninomiya H, Oguri T, Kawashima Y, Takano N, Kitazono S, Ohyanagi F, Horiike A, Yanagitani N, Ishikawa Y, Nishio M. A case treated with nivolumab after small cell lung cancer transformation of mutant EGFR non-small cell lung cancer. Ann Oncol 2016; 27:2300-2302. [PMID: 27760736 DOI: 10.1093/annonc/mdw431] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takeda K, Matsushita H, Ogawa T, Kubozono M, Ishikawa Y, Yamamoto T, Kozumi M, Takahashi N, Dobashi S, Kadoya N, Ito K, Chiba M, Komori S, Ishizawa Y, Takeda K, Tasaka S, Katagiri Y, Tanabe T, Katori Y, Jingu K. Association of Pretreatment Serum Albumin with Reduction in Oropharyngeal Squamous Cell Carcinoma Tumor Volume During Curative External Beam Radiation Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hirayama J, Fujihara M, Shiba M, Ishikawa Y, Satake M, Tadokoro K, Takamoto S. Influence of a 6-h interruption of agitation on in vitro properties of volume-reduced washed platelets in M-sol additive solution. Transfus Med 2016; 26:303-4. [PMID: 27197047 DOI: 10.1111/tme.12313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 10/14/2015] [Accepted: 11/28/2015] [Indexed: 11/29/2022]
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Takeda K, Matsushita H, Ogawa T, Dobashi S, Ishizawa Y, Chida K, Kadoya N, Ito K, Chiba M, Kubozono M, Umezawa R, Shirata Y, Ishikawa Y, Yamamoto T, Kozumi M, Tanabe T, Takahashi N, Katagiri Y, Tazaka S, Takeda K, Sato K, Katori Y, Jingu K. EP-1043: Clinical and volumetric prognostic factors in external beam radiotherapy for head and neck cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32293-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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