151
|
Sakamoto Y, Yoshida Y, Ishikawa H, Ohchi T, Takeshita H, Emi Y, Komatsu H, Sawai T, Shimose T, Oki E, Saeki H, Kakeji Y, Yoshida Y, Baba H, Maehara Y. 189P Phase II trial of S-1 plus panitumumab for wild-type KRAS unresectable colorectal cancer patients previously treated with 5-fluorouracil (5-FU), oxaliplatin and irinotecan (KSCC1103). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
152
|
Marques L, Yoshida Y, Pace N, Moreno N, Pereira A, Santos R, Guedes H, Seabra D, Amorim M, Almeida J, Sousa R, Pinto P, Mahara K, Abe K, Saito M, Terada M, Nagatomo Y, Takanashi S, Venner C, Selton-Suty C, Sellal JM, Mandry D, Marie PY, Juilliere Y, Huttin I. Clinical Cases: Valvular heart disease142A sub-aortic valve mass in a rheumatoid arthritis patient: an unconventional mechanism of aortic regurgitation143Symptomatic severe aortic regurgitation with coronary obstruction due to chronic type a dissection144Mitral valve prolapse and ventricular tachycardia: a long-lasting love story. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
153
|
Sakamoto Y, Yoshida Y, Ishikawa H, Ohchi T, Takeshita H, Emi Y, Komatsu, Sawai T, Shimose T, Oki E, Saeki H, Kakeji Y, Yoshida Y, Baba H, Maehara Y. 189P Phase II trial of S-1 plus panitumumab for wild-type KRAS unresectable colorectal cancer patients previously treated with 5-fluorouracil (5-FU), oxaliplatin and irinotecan (KSCC1103). Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00347-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
154
|
Coutinho E, Yoshida Y, Inoue S, Fukuda R, Snauwaert J, Nakayama Y, De Munck J, Lambrechts P, Suzuki K, Van Meerbeek B. Gel Phase Formation at Resin-modified Glass-ionomer/Tooth Interfaces. J Dent Res 2016; 86:656-61. [PMID: 17586714 DOI: 10.1177/154405910708600714] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Ionic bonding between polyalkenoic acid and hydroxyapatite may explain the excellent bonding retention of glass-ionomers in clinical trials. We have here investigated the extent to which the self-adhesiveness of resin-modified glass-ionomers (RMGIs) can be attributed to this chemical bonding capacity. Therefore, the interaction of 3 RMGIs with tooth substrates was comprehensively characterized, with electron and atomic force microscopy correlated with x-ray photoelectron spectroscopy (XPS). Interfacial ultrastructural analysis for 2 RMGIs disclosed a shallow hybridization of hydroxyapatite-coated collagen, on which a submicron gel phase was deposited through reaction of the polyalkenoic acid with calcium extracted from the dentin surface. One RMGI, however, bonded to dentin without hybrid layer or gel phase formation. XPS indicated that polycarboxylic acids included in the RMGIs electrostatically interacted with hydroxyapatite. We conclude that the self-adhesiveness of RMGIs should be attributed to ionic bonding to hydroxyapatite around collagen, and to micro-mechanical interlocking for those RMGIs that additionally hybridize dentin.
Collapse
Affiliation(s)
- E Coutinho
- Leuven BIOMAT Research Cluster, Department of Conservative Dentistry, School of Dentistry, Oral Pathology and Maxillo-Facial Surgery, Catholic University of Leuven, Leuven, Belgium
| | | | | | | | | | | | | | | | | | | |
Collapse
|
155
|
Yoshida Y, Nagakane K, Fukuda R, Nakayama Y, Okazaki M, Shintani H, Inoue S, Tagawa Y, Suzuki K, De Munck J, Van Meerbeek B. Comparative Study on Adhesive Performance of Functional Monomers. J Dent Res 2016; 83:454-8. [PMID: 15153451 DOI: 10.1177/154405910408300604] [Citation(s) in RCA: 644] [Impact Index Per Article: 80.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Mild self-etch adhesives demineralize dentin only partially, leaving hydroxyapatite around collagen within a submicron hybrid layer. We hypothesized that this residual hydroxyapatite may serve as a receptor for chemical interaction with the functional monomer and, subsequently, contribute to adhesive performance in addition to micro-mechanical hybridization. We therefore chemically characterized the adhesive interaction of 3 functional monomers with synthetic hydroxyapatite, using x-ray photoelectron spectroscopy and atomic absorption spectrophotometry. We further characterized their interaction with dentin ultra-morphologically, using transmission electron microscopy. The monomer 10-methacryloxydecyl dihydrogen phosphate (10-MDP) readily adhered to hydroxyapatite. This bond appeared very stable, as confirmed by the low dissolution rate of its calcium salt in water. The bonding potential of 4-methacryloxyethyl trimellitic acid (4-MET) was substantially lower. The monomer 2-methacryloxyethyl phenyl hydrogen phosphate (phenyl-P) and its bond to hydroxyapatite did not appear to be hydrolytically stable. Besides self-etching dentin, specific functional monomers have additional chemical bonding efficacy that is expected to contribute to their adhesive potential to tooth tissue.
Collapse
Affiliation(s)
- Y Yoshida
- Department of Biomaterials, Okayama University Graduate School of Medicine and Dentistry, 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
156
|
Oh J, Le MD, Nahm HH, Sim H, Jeong J, Perring TG, Woo H, Nakajima K, Ohira-Kawamura S, Yamani Z, Yoshida Y, Eisaki H, Cheong SW, Chernyshev AL, Park JG. Spontaneous decays of magneto-elastic excitations in non-collinear antiferromagnet (Y,Lu)MnO 3. Nat Commun 2016; 7:13146. [PMID: 27759004 PMCID: PMC5075801 DOI: 10.1038/ncomms13146] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 09/08/2016] [Indexed: 11/09/2022] Open
Abstract
Magnons and phonons are fundamental quasiparticles in a solid and can be coupled together to form a hybrid quasi-particle. However, detailed experimental studies on the underlying Hamiltonian of this particle are rare for actual materials. Moreover, the anharmonicity of such magnetoelastic excitations remains largely unexplored, although it is essential for a proper understanding of their diverse thermodynamic behaviour and intrinsic zero-temperature decay. Here we show that in non-collinear antiferromagnets, a strong magnon–phonon coupling can significantly enhance the anharmonicity, resulting in the creation of magnetoelastic excitations and their spontaneous decay. By measuring the spin waves over the full Brillouin zone and carrying out anharmonic spin wave calculations using a Hamiltonian with an explicit magnon–phonon coupling, we have identified a hybrid magnetoelastic mode in (Y,Lu)MnO3 and quantified its decay rate and the exchange-striction coupling term required to produce it. The properties of magnetic, crystalline solids can be described in terms of quantum particles of spin-wave and lattice-vibration energy, known as magnons and phonons respectively. Here, the authors show that strong magnon-phonon coupling in a noncollinear antiferromagnet can create magnetoelastic excitations.
Collapse
Affiliation(s)
- Joosung Oh
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea.,Department of Physics and Astronomy, Seoul National University, Kwanak-Gu, Seoul 08826, Korea
| | - Manh Duc Le
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea.,Department of Physics and Astronomy, Seoul National University, Kwanak-Gu, Seoul 08826, Korea
| | - Ho-Hyun Nahm
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea.,Department of Physics and Astronomy, Seoul National University, Kwanak-Gu, Seoul 08826, Korea
| | - Hasung Sim
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea.,Department of Physics and Astronomy, Seoul National University, Kwanak-Gu, Seoul 08826, Korea
| | - Jaehong Jeong
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea.,Department of Physics and Astronomy, Seoul National University, Kwanak-Gu, Seoul 08826, Korea
| | - T G Perring
- ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
| | - Hyungje Woo
- ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, UK.,Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Kenji Nakajima
- Materials and Life Science Division, J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Seiko Ohira-Kawamura
- Materials and Life Science Division, J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Zahra Yamani
- Chalk River Laboratories, National Research Council, Chalk River, Ontario, Canada K0J 1J0
| | - Y Yoshida
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan
| | - H Eisaki
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan
| | - S-W Cheong
- Department of Physics and Astronomy, and Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA
| | - A L Chernyshev
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - Je-Geun Park
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea.,Department of Physics and Astronomy, Seoul National University, Kwanak-Gu, Seoul 08826, Korea
| |
Collapse
|
157
|
Nishimura T, Mochizuki S, Ishii-Minami N, Fujisawa Y, Kawahara Y, Yoshida Y, Okada K, Ando S, Matsumura H, Terauchi R, Minami E, Nishizawa Y. Magnaporthe oryzae Glycine-Rich Secretion Protein, Rbf1 Critically Participates in Pathogenicity through the Focal Formation of the Biotrophic Interfacial Complex. PLoS Pathog 2016; 12:e1005921. [PMID: 27711180 PMCID: PMC5053420 DOI: 10.1371/journal.ppat.1005921] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 09/07/2016] [Indexed: 12/05/2022] Open
Abstract
Magnaporthe oryzae, the fungus causing rice blast disease, should contend with host innate immunity to develop invasive hyphae (IH) within living host cells. However, molecular strategies to establish the biotrophic interactions are largely unknown. Here, we report the biological function of a M. oryzae-specific gene, Required-for-Focal-BIC-Formation 1 (RBF1). RBF1 expression was induced in appressoria and IH only when the fungus was inoculated to living plant tissues. Long-term successive imaging of live cell fluorescence revealed that the expression of RBF1 was upregulated each time the fungus crossed a host cell wall. Like other symplastic effector proteins of the rice blast fungus, Rbf1 accumulated in the biotrophic interfacial complex (BIC) and was translocated into the rice cytoplasm. RBF1-knockout mutants (Δrbf1) were severely deficient in their virulence to rice leaves, but were capable of proliferating in abscisic acid-treated or salicylic acid-deficient rice plants. In rice leaves, Δrbf1 inoculation caused necrosis and induced defense-related gene expression, which led to a higher level of diterpenoid phytoalexin accumulation than the wild-type fungus did. Δrbf1 showed unusual differentiation of IH and dispersal of the normally BIC-focused effectors around the short primary hypha and the first bulbous cell. In the Δrbf1-invaded cells, symplastic effectors were still translocated into rice cells but with a lower efficiency. These data indicate that RBF1 is a virulence gene essential for the focal BIC formation, which is critical for the rice blast fungus to suppress host immune responses. Biotrophic pathogens grow inside living host cells by secreting “effector” proteins that suppress host innate immunity. Magnaporthe oryzae, which causes the most serious damage to rice, and recently also to wheat, is a hemibiotrophic fungus. During the biotrophic invasion, a host membrane-rich structure called the biotrophic interfacial complex (BIC) is focally formed at the periphery of the invasive hyphae. Several effectors have been reported to accumulate in the BIC; however, its role is unknown. In this study, we identified a novel M. oryzae-specific virulence effector gene, Required-for-Focal-BIC-Formation 1 (RBF1). When RBF1 was absent, the fungus was incapable of forming the focal BIC structure. RBF1 expression was transiently increased each time the fungus penetrated a neighboring rice cell, which is consistent with the BIC formation in each invaded cell. The RBF1-disrupted mutants triggered higher immune responses and showed drastically reduced pathogenicity; however, it was able to cause disease in immuno-depressed rice plants. These results indicate that the focal BIC formation is critical for suppressing host immune responses and to the virulence of M. oryzae. The mode of action of the focal BIC is unknown, but the acquisition of RBF1 might enable M. oryzae to combat effectively against host innate immunity.
Collapse
Affiliation(s)
- Takeshi Nishimura
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Susumu Mochizuki
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Naoko Ishii-Minami
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Yukiko Fujisawa
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Yoshihiro Kawahara
- Division of Basic Research, Institute of Crop Science, NARO, Tsukuba, Ibaraki, Japan
- Bioinformatics Team, Advanced Analysis Center, NARO, Tsukuba, Ibaraki, Japan
| | - Yuri Yoshida
- Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kazunori Okada
- Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Sugihiro Ando
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | | | | | - Eiichi Minami
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Yoko Nishizawa
- Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
- * E-mail:
| |
Collapse
|
158
|
Kawakami T, Tsushima T, Hayashi K, Shirasu H, Kawahira M, Kawai S, Kito Y, Yoshida Y, Hamauchi S, Todaka A, Machida N, Yamazaki K, Yokota T, Fukutomi A, Onozawa Y, Yasui H. Risk factors for esophageal fistula in esophageal squamous cell carcinoma invading adjacent organs (T4b) treated with definitive chemoradiotherapy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw371.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
159
|
Fujitani N, Yoshimine T, Shimoda E, Wakai N, Inoue K, Asakawa I, Tamamoto T, Yoshida Y, Ishiuchi S, Hasegawa M. Appropriateness of the Linear-Quadratic Model to Hypofractionated Radiation Therapy In Vivo. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
160
|
Iuchi T, Shingyoji M, Itakura M, Hasegawa Y, Yoshida Y, Ikegami S, Setoguchi T, Ashinuma H. Tyrosine kinase inhibitors alone as a first-line treatment for patients with non-small-cell lung cancer harboring mutant epidermal growth factor receptor. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw383.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
161
|
Hasegawa Y, Iijima Y, Persson K, Nagano K, Yoshida Y, Lamont RJ, Kikuchi T, Mitani A, Yoshimura F. Role of Mfa5 in Expression of Mfa1 Fimbriae in Porphyromonas gingivalis. J Dent Res 2016; 95:1291-7. [PMID: 27323953 DOI: 10.1177/0022034516655083] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Fimbriae are protein-based filamentous appendages that protrude from the bacterial cell surface and facilitate host adhesion. Two types of fimbriae, FimA and Mfa1, of the periodontal pathogen Porphyromonas gingivalis are responsible for adherence to other bacteria and to host cells in the oral cavity. Both fimbrial forms are composed of 5 proteins, but there is limited information about their polymerization mechanisms. Here, the authors evaluated the function of Mfa5, one of the Mfa1 fimbrial accessory proteins. Using mfa5 gene disruption and complementation studies, the authors revealed that Mfa5 affects the incorporation of other accessory proteins, Mfa3 and Mfa4, into fibers and the expression of fimbriae on the cell surface. Mfa5 is predicted to have a C-terminal domain (CTD) that uses the type IX secretion system (T9SS), which is limited to this organism and related Bacteroidetes species, for translocation across the outer membrane. To determine the relationship between the putative Mfa5 CTD and the T9SS, mutants were constructed with in-frame deletion of the CTD and deletion of porU, a C-terminal signal peptidase linked to T9SS-mediated secretion. The ∆CTD-expressing strain presented a similar phenotype to the mfa5 disruption mutant with reduced expression of fimbriae lacking all accessory proteins. The ∆porU mutants and the ∆CTD-expressing strain showed intracellular accumulation of Mfa5. These results indicate that Mfa5 function requires T9SS-mediated translocation across the outer membrane, which is dependent on the CTD, and subsequent incorporation into fibers. These findings suggest the presence of a novel polymerization mechanism of the P. gingivalis fimbriae.
Collapse
Affiliation(s)
- Y Hasegawa
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Y Iijima
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - K Persson
- Department of Chemistry, Umeå University, Umeå, Sweden
| | - K Nagano
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Y Yoshida
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - R J Lamont
- Department of Oral Immunology and Infectious Diseases, School of Dentistry, University of Louisville, Louisville, KY, USA
| | - T Kikuchi
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - A Mitani
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - F Yoshimura
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| |
Collapse
|
162
|
Sugasawa T, Mukai N, Tamura K, Tamba T, Mori S, Miyashiro Y, Yamaguchi M, Nissato S, Ra S, Yoshida Y, Hoshino M, Ohmori H, Kawakami Y, Takekoshi K. Effects of Cold Stimulation on Mitochondrial Activity and VEGF Expression in vitro. Int J Sports Med 2016; 37:766-78. [PMID: 27116343 DOI: 10.1055/s-0042-102659] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We aimed to clarify the effects of cold stimulation at various temperatures on mitochondrial activity and vascular endothelial growth factor (VEGF) expression in vitro. Human fibroblast, human mesenchymal stem cell, and rat skeletal muscle myoblast cell lines were used. For each cell type, cells were divided into 4 groups and stimulated in various cold temperatures (0, 4, 17 and 25°C) 3 times for 15 min each by placement on crushed ice or floating on cold water set at each temperature. Control cells were subjected to warm water at 37°C. Factors related to mitochondrial activity, mitochondrial DNA copy numbers, and VEGF expression were analyzed 24 h after the last cold stimulation. In all cell types, significant increases of factors related to mitochondrial activity and mitochondrial DNA copy numbers were seen in the 4°C and 17°C-stimulated cells compared with control cells. In rat skeletal muscle cells stimulated at 4°C, VEGF expression significantly increased compared to the control cells. Our data suggest that cold stimulation at certain temperatures promotes mitochondrial activity, biogenesis and VEGF expression.
Collapse
Affiliation(s)
- T Sugasawa
- Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - N Mukai
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Tamura
- Faculty of Sports and Health Science, Department of Health Science, Daito Bunka University, Higashi-matsuyama, Saitama, Japan
| | - T Tamba
- Faculty of Sports and Health Science, Department of Health Science, Daito Bunka University, Higashi-matsuyama, Saitama, Japan
| | - S Mori
- Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Y Miyashiro
- Master's Program in Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - M Yamaguchi
- Master's Program in Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - S Nissato
- Faculty of Medicine, Division of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Sg Ra
- Faculty of Medicine, Division of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Y Yoshida
- Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - M Hoshino
- Tsukuba i-Laboratory LLP, Laboratory Examination, Tsukuba, Japan
| | - H Ohmori
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Y Kawakami
- Faculty of Medicine, Division of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Takekoshi
- Faculty of Medicine, Division of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| |
Collapse
|
163
|
Furui H, Ejiri A, Nagashima Y, Takase Y, Sonehara M, Tsujii N, Yamaguchi T, Shinya T, Togashi H, Homma H, Nakamura K, Takeuchi T, Yajima S, Yoshida Y, Toida K, Takahashi W, Yamazaki H. A model of plasma current through a hole of Rogowski probe including sheath effects. Review of Scientific Instruments 2016; 87:043503. [PMID: 27131670 DOI: 10.1063/1.4944941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In TST-2 Ohmic discharges, local current is measured using a Rogowski probe by changing the angle between the local magnetic field and the direction of the hole of the Rogowski probe. The angular dependence shows a peak when the direction of the hole is almost parallel to the local magnetic field. The obtained width of the peak was broader than that of the theoretical curve expected from the probe geometry. In order to explain this disagreement, we consider the effect of sheath in the vicinity of the Rogowski probe. A sheath model was constructed and electron orbits were numerically calculated. From the calculation, it was found that the electron orbit is affected by E × B drift due to the sheath electric field. Such orbit causes the broadening of the peak in the angular dependence and the dependence agrees with the experimental results. The dependence of the broadening on various plasma parameters was studied numerically and explained qualitatively by a simplified analytical model.
Collapse
Affiliation(s)
- H Furui
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - A Ejiri
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | | | - Y Takase
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - M Sonehara
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - N Tsujii
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - T Yamaguchi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - T Shinya
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - H Togashi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - H Homma
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - K Nakamura
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - T Takeuchi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - S Yajima
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - Y Yoshida
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - K Toida
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - W Takahashi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - H Yamazaki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| |
Collapse
|
164
|
Adachi N, Adamovitch V, Adjovi Y, Aida K, Akamatsu H, Akiyama S, Akli A, Ando A, Andrault T, Antonietti H, Anzai S, Arkoun G, Avenoso C, Ayrault D, Banasiewicz M, Banaśkiewicz M, Bernardini L, Bernard E, Berthet E, Blanchard M, Boreyko D, Boros K, Charron S, Cornette P, Czerkas K, Dameron M, Date I, De Pontbriand M, Demangeau F, Dobaczewski Ł, Dobrzyński L, Ducouret A, Dziedzic M, Ecalle A, Edon V, Endo K, Endo T, Endo Y, Etryk D, Fabiszewska M, Fang S, Fauchier D, Felici F, Fujiwara Y, Gardais C, Gaul W, Gurin L, Hakoda R, Hamamatsu I, Handa K, Haneda H, Hara T, Hashimoto M, Hashimoto T, Hashimoto K, Hata D, Hattori M, Hayano R, Hayashi R, Higasi H, Hiruta M, Honda A, Horikawa Y, Horiuchi H, Hozumi Y, Ide M, Ihara S, Ikoma T, Inohara Y, Itazu M, Ito A, Janvrin J, Jout I, Kanda H, Kanemori G, Kanno M, Kanomata N, Kato T, Kato S, Katsu J, Kawasaki Y, Kikuchi K, Kilian P, Kimura N, Kiya M, Klepuszewski M, Kluchnikov E, Kodama Y, Kokubun R, Konishi F, Konno A, Kontsevoy V, Koori A, Koutaka A, Kowol A, Koyama Y, Kozioł M, Kozue M, Kravtchenko O, Kruczała W, Kudła M, Kudo H, Kumagai R, Kurogome K, Kurosu A, Kuse M, Lacombe A, Lefaillet E, Magara M, Malinowska J, Malinowski M, Maroselli V, Masui Y, Matsukawa K, Matsuya K, Matusik B, Maulny M, Mazur P, Miyake C, Miyamoto Y, Miyata K, Miyata K, Miyazaki M, Molȩda M, Morioka T, Morita E, Muto K, Nadamoto H, Nadzikiewicz M, Nagashima K, Nakade M, Nakayama C, Nakazawa H, Nihei Y, Nikul R, Niwa S, Niwa O, Nogi M, Nomura K, Ogata D, Ohguchi H, Ohno J, Okabe M, Okada M, Okada Y, Omi N, Onodera H, Onodera K, Ooki S, Oonishi K, Oonuma H, Ooshima H, Oouchi H, Orsucci M, Paoli M, Penaud M, Perdrisot C, Petit M, Piskowski A, Płocharski A, Polis A, Polti L, Potsepnia T, Przybylski D, Pytel M, Quillet W, Remy A, Robert C, Sadowski M, Saito M, Sakuma D, Sano K, Sasaki Y, Sato N, Schneider T, Schneider C, Schwartzman K, Selivanov E, Sezaki M, Shiroishi K, Shustava I, Śniecińska A, Stalchenko E, Staroń A, Stromboni M, Studzińska W, Sugisaki H, Sukegawa T, Sumida M, Suzuki Y, Suzuki K, Suzuki R, Suzuki H, Suzuki K, Świderski W, Szudejko M, Szymaszek M, Tada J, Taguchi H, Takahashi K, Tanaka D, Tanaka G, Tanaka S, Tanino K, Tazbir K, Tcesnokova N, Tgawa N, Toda N, Tsuchiya H, Tsukamoto H, Tsushima T, Tsutsumi K, Umemura H, Uno M, Usui A, Utsumi H, Vaucelle M, Wada Y, Watanabe K, Watanabe S, Watase K, Witkowski M, Yamaki T, Yamamoto J, Yamamoto T, Yamashita M, Yanai M, Yasuda K, Yoshida Y, Yoshida A, Yoshimura K, Żmijewska M, Zuclarelli E. Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus-the 'D-shuttle' project. J Radiol Prot 2016; 36:49-66. [PMID: 26613195 DOI: 10.1088/0952-4746/36/1/49] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter 'D-shuttle' for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the terrestrial background radiation level of other regions/countries.
Collapse
Affiliation(s)
- N Adachi
- Adachi High School, 2-347 Kakunai, Nihonmatsu, Fukushima 964-0904, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
165
|
Dan K, Datta A, Yoshida Y, Saito G, Yoshikawa K, Roy M. Screening out the non-Arrhenius behaviour of nematic-isotropic transition by room temperature ionic liquid. J Chem Phys 2016; 144:084904. [PMID: 26931723 DOI: 10.1063/1.4942521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Differential Scanning Calorimetry (DSC) and optical polarization microscopy of a mixture of the liquid crystalline material (N-(4-methoxybenzylidene)-4-butylaniline, MBBA) and a Fe-based room temperature ionic liquid 1-ethyl-3-methylimidazolium tetrachloroferrate ([Emim](+) [FeCl4](-), EMIF) indicate a decrease in the nematic-isotropic (N-I) phase transition temperature (T(NI)) with an increase in EMIF concentration, explained by a proposed model of Coulomb "screening" of MBBA quadrupoles by the EMIF ions along with ionic "self screening." DSC studies of EMIF-MBBA and pure EMIF and comparison with pure MBBA results show that the major transitions in pure EMIF have Arrhenius behaviour, but more importantly the previously found convex Arrhenius behaviour of the pristine MBBA [K. Dan et al., Europhys. Lett. 108, 36007 (2014)] becomes Arrhenius in the mixture, indicating a conversion of the entropic N-I activation barrier to an enthalpic one. In presence of EMIF, a drastic decrease in the intensity of out-of-plane distortions of benzene rings in MBBA is found from Fourier transform infrared spectroscopy, consistent with significant reduction in the conformational states of MBBA. This suppression of large amplitude motion is again consistent with a Coulomb screening and gives a molecular basis for the entropic-to-enthalpic conversion of the N-I activation barrier.
Collapse
Affiliation(s)
- K Dan
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar Block, Sector-1, Salt Lake, Kolkata, West Bengal 700064, India
| | - A Datta
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar Block, Sector-1, Salt Lake, Kolkata, West Bengal 700064, India
| | - Y Yoshida
- Faculty of Agriculture, Meijo University, Shiogamaguchi, Japan
| | - G Saito
- Faculty of Agriculture, Meijo University, Shiogamaguchi, Japan
| | - K Yoshikawa
- Life and Medical Sciences, Doshisha University, Kyoto, Japan
| | - M Roy
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar Block, Sector-1, Salt Lake, Kolkata, West Bengal 700064, India
| |
Collapse
|
166
|
Yamada T, Kawakami S, Yoshida Y, Kawamura H, Ohta S, Abe K, Hamada H, Dohi S, Ichizuka K, Takita H, Baba Y, Matsubara S, Mochizuki J, Unno N, Maegawa Y, Maeda M, Inubashiri E, Akutagawa N, Kubo T, Shirota T, Oda Y, Yamada T, Yamagishi E, Nakai A, Fuchi N, Masuzaki H, Urabe S, Kudo Y, Nomizo M, Sagawa N, Maeda T, Kamitomo M, Kawabata K, Kataoka S, Shiozaki A, Saito S, Sekizawa A, Minakami H. Influenza 2014–2015 among pregnant Japanese women: primiparous vs multiparous women. Eur J Clin Microbiol Infect Dis 2016; 35:665-71. [DOI: 10.1007/s10096-016-2585-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 01/13/2016] [Indexed: 11/28/2022]
|
167
|
Kitagawa A, Drentje AG, Fujita T, Muramatsu M, Fukushima K, Shiraishi N, Suzuki T, Takahashi K, Takasugi W, Biri S, Rácz R, Kato Y, Uchida T, Yoshida Y. Recent developments of ion sources for life-science studies at the Heavy Ion Medical Accelerator in Chiba (invited). Rev Sci Instrum 2016; 87:02C107. [PMID: 26932117 DOI: 10.1063/1.4934843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
With about 1000-h of relativistic high-energy ion beams provided by Heavy Ion Medical Accelerator in Chiba, about 70 users are performing various biology experiments every year. A rich variety of ion species from hydrogen to xenon ions with a dose rate of several Gy/min is available. Carbon, iron, silicon, helium, neon, argon, hydrogen, and oxygen ions were utilized between 2012 and 2014. Presently, three electron cyclotron resonance ion sources (ECRISs) and one Penning ion source are available. Especially, the two frequency heating techniques have improved the performance of an 18 GHz ECRIS. The results have satisfied most requirements for life-science studies. In addition, this improved performance has realized a feasible solution for similar biology experiments with a hospital-specified accelerator complex.
Collapse
Affiliation(s)
- A Kitagawa
- National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - A G Drentje
- National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - T Fujita
- National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - M Muramatsu
- National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - K Fukushima
- Accelerator Engineering Corporation, Chiba, Japan
| | - N Shiraishi
- Accelerator Engineering Corporation, Chiba, Japan
| | - T Suzuki
- Accelerator Engineering Corporation, Chiba, Japan
| | - K Takahashi
- Accelerator Engineering Corporation, Chiba, Japan
| | - W Takasugi
- Accelerator Engineering Corporation, Chiba, Japan
| | - S Biri
- Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary
| | - R Rácz
- Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary
| | - Y Kato
- Graduate School of Engineering, Osaka University, Osaka, Japan
| | - T Uchida
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, Japan
| | - Y Yoshida
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, Japan
| |
Collapse
|
168
|
Uchida T, Rácz R, Muramatsu M, Kato Y, Kitagawa A, Biri S, Yoshida Y. Two-chamber configuration of Bio-Nano electron cyclotron resonance ion source for fullerene modification. Rev Sci Instrum 2016; 87:02A720. [PMID: 26931938 DOI: 10.1063/1.4934649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report on the modification of fullerenes with iron and chlorine using two individually controllable plasmas in the Bio-Nano electron cyclotron resonance ion source (ECRIS). One of the plasmas is composed of fullerene and the other one is composed of iron and chlorine. The online ion beam analysis allows one to investigate the rate of the vapor-phase collisional modification process in the ECRIS, while the offline analyses (e.g., liquid chromatography-mass spectrometry) of the materials deposited on the plasma chamber can give information on the surface-type process. Both analytical methods show the presence of modified fullerenes such as fullerene-chlorine, fullerene-iron, and fullerene-chlorine-iron.
Collapse
Affiliation(s)
- T Uchida
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe 350-8585, Japan
| | - R Rácz
- Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary
| | - M Muramatsu
- National Institute of Radiological Sciences (NIRS), Chiba 263-8555, Japan
| | - Y Kato
- Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - A Kitagawa
- National Institute of Radiological Sciences (NIRS), Chiba 263-8555, Japan
| | - S Biri
- Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary
| | - Y Yoshida
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe 350-8585, Japan
| |
Collapse
|
169
|
Muramatsu M, Hojo S, Iwata Y, Katagiri K, Sakamoto Y, Takahashi N, Sasaki N, Fukushima K, Takahashi K, Suzuki T, Sasano T, Uchida T, Yoshida Y, Hagino S, Nishiokada T, Kato Y, Kitagawa A. Development of a compact ECR ion source for various ion production. Rev Sci Instrum 2016; 87:02C110. [PMID: 26932120 DOI: 10.1063/1.4935221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
There is a desire that a carbon-ion radiotherapy facility will produce various ion species for fundamental research. Although the present Kei2-type ion sources are dedicated for the carbon-ion production, a future ion source is expected that could provide: (1) carbon-ion production for medical use, (2) various ions with a charge-to-mass ratio of 1/3 for the existing Linac injector, and (3) low cost for modification. A prototype compact electron cyclotron resonance (ECR) ion source, named Kei3, based on the Kei series has been developed to correspond to the Kei2 type and to produce these various ions at the National Institute of Radiological Sciences (NIRS). The Kei3 has an outer diameter of 280 mm and a length of 1120 mm. The magnetic field is formed by the same permanent magnet as Kei2. The movable extraction electrode has been installed in order to optimize the beam extraction with various current densities. The gas-injection side of the vacuum chamber has enough space for an oven system. We measured dependence of microwave frequency, extraction voltage, and puller position. Charge state distributions of helium, carbon, nitrogen, oxygen, and neon were also measured.
Collapse
Affiliation(s)
- M Muramatsu
- National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - S Hojo
- National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Y Iwata
- National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - K Katagiri
- National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Y Sakamoto
- National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - N Takahashi
- Sumitomo Heavy Industries, Ltd., 19 Natsushima, Yokosuka, Kanagawa 237-8555, Japan
| | - N Sasaki
- Accelerator Engineering Corporation, 3-8-5 Konakadai, Inage, Chiba 263-0043, Japan
| | - K Fukushima
- Accelerator Engineering Corporation, 3-8-5 Konakadai, Inage, Chiba 263-0043, Japan
| | - K Takahashi
- Accelerator Engineering Corporation, 3-8-5 Konakadai, Inage, Chiba 263-0043, Japan
| | - T Suzuki
- Accelerator Engineering Corporation, 3-8-5 Konakadai, Inage, Chiba 263-0043, Japan
| | - T Sasano
- Accelerator Engineering Corporation, 3-8-5 Konakadai, Inage, Chiba 263-0043, Japan
| | - T Uchida
- Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe-shi, Saitama 350-8585, Japan
| | - Y Yoshida
- Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe-shi, Saitama 350-8585, Japan
| | - S Hagino
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita-shi, Osaka 565-0871, Japan
| | - T Nishiokada
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita-shi, Osaka 565-0871, Japan
| | - Y Kato
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita-shi, Osaka 565-0871, Japan
| | - A Kitagawa
- National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| |
Collapse
|
170
|
Huang HY, Jia CJ, Chen ZY, Wohlfeld K, Moritz B, Devereaux TP, Wu WB, Okamoto J, Lee WS, Hashimoto M, He Y, Shen ZX, Yoshida Y, Eisaki H, Mou CY, Chen CT, Huang DJ. Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates. Sci Rep 2016; 6:19657. [PMID: 26794437 PMCID: PMC4726252 DOI: 10.1038/srep19657] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 12/15/2015] [Indexed: 11/23/2022] Open
Abstract
Measurements of spin excitations are essential for an understanding of spin-mediated pairing for superconductivity; and resonant inelastic X-ray scattering (RIXS) provides a considerable opportunity to probe high-energy spin excitations. However, whether RIXS correctly measures the collective spin excitations of doped superconducting cuprates remains under debate. Here we demonstrate distinct Raman- and fluorescence-like RIXS excitations of Bi1.5Pb0.6Sr1.54CaCu2O8+δ. Combining photon-energy and momentum dependent RIXS measurements with theoretical calculations using exact diagonalization provides conclusive evidence that the Raman-like RIXS excitations correspond to collective spin excitations, which are magnons in the undoped Mott insulators and evolve into paramagnons in doped superconducting compounds. In contrast, the fluorescence-like shifts are due primarily to the continuum of particle-hole excitations in the charge channel. Our results show that under the proper experimental conditions RIXS indeed can be used to probe paramagnons in doped high-Tc cuprate superconductors.
Collapse
Affiliation(s)
- H Y Huang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.,Program of Science and Technology of Synchrotron Light Source, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - C J Jia
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Z Y Chen
- Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - K Wohlfeld
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, PL-02093 Warsaw, Poland
| | - B Moritz
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - T P Devereaux
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - W B Wu
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - J Okamoto
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - W S Lee
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Hashimoto
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Y He
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Z X Shen
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Department of Applied Physics, Stanford University, Stanford, California 94305, USA.,Department of Physics, Stanford University, Stanford, California 94305, USA
| | - Y Yoshida
- Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan
| | - H Eisaki
- Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan
| | - C Y Mou
- Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - C T Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - D J Huang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.,Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
171
|
Nagai E, Horiuchi K, Sakamoto A, Omi Y, Yoshida Y, Tokumitsu H, Sakurai M, Haniu K, Okamoto T. 99P Predicting no metastases to axillary lymph nodes beyond positive sentinel nodes in patients with breast cancer: a simple rule. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
172
|
Sakamoto A, Okamoto T, Haniu K, Nagai E, Sakurai M, Tokumitsu H, Yoshida Y, Omi Y, Horiuchi K. 80P Correlation of immediate reconstruction with clinical outcome to locally advanced breast cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
173
|
Ishikawa H, Kato T, Yamazaki K, Taku K, Tsushima T, Yoshida Y, Hamauchi S, Yoshikawa S, Yagi H, Kimura M, Kimura M, Nakajo M, Sakata S, Masujima H, Miyazawa A, Izawa M, Iwami K, Yamanaka T, Kiyohara Y. 394P A self-controlled trial of prophylactic topical application of vitamin K1 cream for cetuximab-related skin rash. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv531.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
174
|
Funaba M, Kanchiku T, Imajo Y, Suzuki H, Yoshida Y, Nishida N, Fujimoto K, Taguchi T. Characteristics of C6-7 myelopathy: assessment of clinical symptoms and electrophysiological findings. Spinal Cord 2015; 54:798-803. [PMID: 26572604 DOI: 10.1038/sc.2015.203] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 10/04/2015] [Accepted: 10/13/2015] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN This is a single-center retrospective study. OBJECTIVES The objective of this study was to study the clinical symptoms and electrophysiological features of C6-7 myelopathy. SETTING This study was conducted at the Department of Orthopedic surgery, Yamaguchi University Graduate school of medicine, Japan. METHODS A total of 20 patients with cervical compressive myelopathy were determined by spinal cord-evoked potentials or a single level of obvious magnetic resonance imaging (MRI)-documented cervical spinal cord compression. Neurological examinations included manual muscle testing and investigation of deep tendon reflex, including Hoffmann sign, and of sensory disturbance areas. Motor-evoked potentials (MEPs), compound muscle action potentials (CMAPs) and F-wave were recorded from bilateral abductor digit minim and abductor halluces muscles. Central motor conduction time was calculated as follows: MEPs latency-(CMAPs latency+F latency-1)/2 (ms). RESULTS Eighteen patients (90%) had negative Hoffmann sign. Eight patients (40%) had no sensory disturbance in the upper limbs and 8 patients (40%) had no muscle weakness in the upper limbs. We determined that patients had cervical myelopathy when their central motor conduction time measured in abductor digit minim was longer than 6.76 ms (+2 s.d.). Using this definition, the sensitivity for myelopathy was 42.8%. CONCLUSION Patients with C6-7 myelopathy may lack clinical symptoms in their hands and central motor conduction time measured in abductor digit minim tended to be less prolonged, and it only showed symptoms in their lower limbs as gait disturbance. Surgeons should bear in mind the possibility of disorders of caudal C6-7 when they encounter patients with no or few symptoms in their hands and with leg weakness or numbness.
Collapse
Affiliation(s)
- M Funaba
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - T Kanchiku
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - Y Imajo
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - H Suzuki
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - Y Yoshida
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - N Nishida
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - K Fujimoto
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| | - T Taguchi
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Ube city, Japan
| |
Collapse
|
175
|
Suetomi Y, Kanchiku T, Nishijima S, Imajo Y, Suzuki H, Yoshida Y, Nishida N, Taguchi T. Application of diffusion tensor imaging for the diagnosis of segmental level of dysfunction in cervical spondylotic myelopathy. Spinal Cord 2015; 54:390-5. [DOI: 10.1038/sc.2015.192] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 07/01/2015] [Accepted: 09/16/2015] [Indexed: 11/09/2022]
|
176
|
Inokoshi M, Yoshihara K, Nagaoka N, Nakanishi M, De Munck J, Minakuchi S, Vanmeensel K, Zhang F, Yoshida Y, Vleugels J, Naert I, Van Meerbeek B. Structural and Chemical Analysis of the Zirconia–Veneering Ceramic Interface. J Dent Res 2015; 95:102-9. [DOI: 10.1177/0022034515608825] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The interfacial interaction of veneering ceramic with zirconia is still not fully understood. This study aimed to characterize morphologically and chemically the zirconia–veneering ceramic interface. Three zirconia-veneering conditions were investigated: 1) zirconia–veneering ceramic fired on sandblasted zirconia, 2) zirconia–veneering ceramic on as-sintered zirconia, and 3) alumina–veneering ceramic (lower coefficient of thermal expansion [CTE]) on as-sintered zirconia. Polished cross-sectioned ceramic–veneered zirconia specimens were examined using field emission gun scanning electron microscopy (Feg-SEM). In addition, argon-ion thinned zirconia–veneering ceramic interface cross sections were examined using scanning transmission electron microscopy (STEM)–energy dispersive X-ray spectrometry (EDS) at high resolution. Finally, the zirconia–veneering ceramic interface was quantitatively analyzed for tetragonal-to-monoclinic phase transformation and residual stress using micro-Raman spectroscopy (µRaman). Feg-SEM revealed tight interfaces for all 3 veneering conditions. High-resolution transmission electron microscopy (HRTEM) disclosed an approximately 1.0-µm transformed zone at sandblasted zirconia, in which distinct zirconia grains were no longer observable. Straight grain boundaries and angular grain corners were detected up to the interface of zirconia– and alumina–veneering ceramic with as-sintered zirconia. EDS mapping disclosed within the zirconia–veneering ceramic a few nanometers thick calcium/aluminum-rich layer, touching the as-sintered zirconia base, with an equally thick silicon-rich/aluminum-poor layer on top. µRaman revealed t-ZrO2-to- m-ZrO2 phase transformation and residual compressive stress at the sandblasted zirconia surface. The difference in CTE between zirconia– and the alumina–veneering ceramic resulted in residual tensile stress within the zirconia immediately adjacent to its interface with the veneering ceramic. The rather minor chemical elemental shifts recorded in the veneering ceramic did not suffice to draw definitive conclusions regarding potential chemical interaction of the veneering ceramic with zirconia. Sandblasting damaged the zirconia surface and induced phase transformation that also resulted in residual compressive stress. Difference in CTE of zirconia versus that of the veneering ceramic resulted in an unfavorable residual tensile stress at the zirconia–veneering ceramic interface.
Collapse
Affiliation(s)
- M. Inokoshi
- BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Leuven, Belgium
- Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - K. Yoshihara
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama, Japan
| | - N. Nagaoka
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School, Okayama, Japan
| | - M. Nakanishi
- Inorganic Materials Chemistry Laboratory, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - J. De Munck
- BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Leuven, Belgium
| | - S. Minakuchi
- Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - K. Vanmeensel
- Department of Materials Engineering, KU Leuven (University of Leuven), Heverlee, Belgium
| | - F. Zhang
- Department of Materials Engineering, KU Leuven (University of Leuven), Heverlee, Belgium
| | - Y. Yoshida
- Department of Biomaterials and Bioengineering, Graduate School of Dental Medicine, Hokkaido University, Hokkaido, Japan
| | - J. Vleugels
- Department of Materials Engineering, KU Leuven (University of Leuven), Heverlee, Belgium
| | - I. Naert
- BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Leuven, Belgium
| | - B. Van Meerbeek
- BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Leuven, Belgium
| |
Collapse
|
177
|
Anzai H, Yoshida Y, Sugiyama S, Endo H, Matsumoto Y, Ohta M. Porosity dependency of an optimized stent design for an intracranial aneurysm. Technol Health Care 2015; 23:547-56. [PMID: 26410116 DOI: 10.3233/thc-151007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Optimal design of stents for a cerebral aneurysm is desired for efficient flow reduction in the aneurysm. OBJECTIVE In this study, we aimed to optimize stent design at several porosities, estimate the influence of stent design on aneurysm flow, and evaluate the ability of stents to reduce flow. METHODS Stent models were constructed as sets of squares or rectangles in the necks of a two-dimensional (2D) and realistic aneurysm. Then, automated optimization was performed using a combination of simulated annealing and lattice Boltzmann flow simulation. RESULTS By simulated annealing, stents were gradually modified to reduce the average velocity in an aneurysm. As a result of optimization, stents of all porosities demonstrated an inhomogeneous distribution with dense struts in the inflow area. Flow reduction was increased compared with the initial stent. Under the condition of high porosity, flow reduction by the stent drastically increased as porosity decreased. Under low porosity, the increase of velocity reduction was moderate even as porosity decreased. CONCLUSIONS Optimization can enhance flow reduction by stents. However, the increase in reduction associated with decreasing porosity is moderate under lower-porosity conditions. This threshold may help in the choice of stent porosity for each specific aneurysm.
Collapse
Affiliation(s)
- H Anzai
- Frontier Research Institute of Interdisciplinary Sciences, Tohoku University, Sendai, Japan.,Institute of Fluid Science, Tohoku University, Sendai, Japan
| | - Y Yoshida
- Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - S Sugiyama
- Department of Neurosurgery, Kohnan Hospital, Sendai, Japan.,Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - H Endo
- Department of Neurosurgery, Kohnan Hospital, Sendai, Japan
| | - Y Matsumoto
- Department of Neuroendovascular Therapy, Kohnan Hospital, Sendai, Japan
| | - M Ohta
- Institute of Fluid Science, Tohoku University, Sendai, Japan
| |
Collapse
|
178
|
Diamantopoulos NP, Hayashi M, Yoshida Y, Maruta A, Maruyama R, Kuwaki N, Takenaga K, Uemura H, Matsuo S, Kitayama K. Mode-selective optical packet switching in mode-division multiplexing networks. Opt Express 2015; 23:23660-23666. [PMID: 26368463 DOI: 10.1364/oe.23.023660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel mode-selective optical packet switching, based on mode-multiplexers/demultiplexers and multi-port optical micro-electro-mechanical systems (MEMS) switches, has been proposed and experimentally demonstrated. The experimental demonstration was performed using the LP(01), LP(11a) and LP(11b) modes of a 30-km long mode-division multiplexed few-mode fiber link, utilizing 40 Gb/s, 16-QAM signals.
Collapse
|
179
|
Sugiyama M, Saeki A, Hasebe A, Kamesaki R, Yoshida Y, Kitagawa Y, Suzuki T, Shibata K. Activation of inflammasomes in dendritic cells and macrophages by Mycoplasma salivarium. Mol Oral Microbiol 2015; 31:259-69. [PMID: 26177301 DOI: 10.1111/omi.12117] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2015] [Indexed: 01/27/2023]
Abstract
Interleukin-1β (IL-1β) plays crucial roles in the pathogenesis of periodontal disease. It is produced after the processing of pro-IL-1β by caspase-1, which is activated by the inflammasome-a multiprotein complex comprising nucleotide-binding domain leucine-rich repeat-containing receptor (NLR), the adaptor protein apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC), and procaspase-1. Mycoplasma salivarium preferentially inhabits the gingival sulcus and the incidence and number of organisms in the oral cavity increase significantly with the progression of periodontal disease. To initially clarify the association of this organism with periodontal diseases, this study determined whether it induces IL-1β production by innate immune cells such as dendritic cells or macrophages by using Mycoplasma pneumoniae as a positive control. Both live and heat-killed M. salivarium and M. pneumoniae cells induced IL-1β production by XS106 murine dendritic cells as well as pyroptosis. The activities were significantly downregulated by silencing of caspase-1. Bone-marrow-derived macrophage (BMMs) from wild-type and NLR-containing protein 3 (NLRP3)-, ASC-, and caspase-1-deficient mice were examined for IL-1β production in response to these mycoplasmas. Live M. salivarium and M. pneumoniae cells almost completely lost the ability to induce IL-1β production by BMMs from ASC- and caspase-1-deficient mice. Their activities toward BMMs from NLRP3-deficient mice were significantly but not completely attenuated. These results suggest that live M. salivarium and M. pneumoniae cells can activate several types of inflammasomes including the NLRP3 inflammasome. Both M. salivarium and M. pneumoniae cells can activate THP-1 human monocytic cells to induce IL-1β production. Hence, the present finding that M. salivarium induces IL-1β production by dendritic cells and macrophages may suggest the association of this organism with periodontal diseases.
Collapse
Affiliation(s)
- M Sugiyama
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan.,Division Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - A Saeki
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - A Hasebe
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - R Kamesaki
- Division Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - Y Yoshida
- Division of Biomaterials and Bioengineering, Department of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - Y Kitagawa
- Division Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - T Suzuki
- Department of Molecular Bacteriology and Immunology, Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa, Japan
| | - K Shibata
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| |
Collapse
|
180
|
Yoshida Y, Yamazaki K, Mizusawa J, Satoh M, Hinoi T, Tsuchida A, Otsuka K, Sato T, Watanabe M, Baba H, Kimura H, Idani H, Kanazawa A, Fukunaga M, Okuda J, Tajima Y, Hasegawa H, Katayama H, Hamaguchi T, Shimada Y. 2129 Predictive factor for toxicities and treatment termination in adjuvant capecitabine therapy for stage III colorectal cancer; based on the data of a randomized trial, JCOG0910. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31051-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
181
|
Tsushima T, Yamazaki K, Kato T, Taku K, Yoshida Y, Hamauchi S, Yoshikawa S, Yagi H, Kimura M, Ishikawa H, Kimura M, Nakajo M, Sakata S, Masujima H, Miyazawa A, Saitou K, Izawa M, Iwami K, Yamanaka T, Kiyohara Y. 1616 A double blind, self-controlled randomized trial of prophylactic topical vitamin K1 cream application for cetuximab-related skin toxicity (VANQUISH trial). Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30704-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
182
|
Comin R, Sutarto R, He F, da Silva Neto EH, Chauviere L, Fraño A, Liang R, Hardy WN, Bonn DA, Yoshida Y, Eisaki H, Achkar AJ, Hawthorn DG, Keimer B, Sawatzky GA, Damascelli A. Symmetry of charge order in cuprates. Nat Mater 2015; 14:796-800. [PMID: 26006005 DOI: 10.1038/nmat4295] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 04/16/2015] [Indexed: 05/23/2023]
Abstract
Charge-ordered ground states permeate the phenomenology of 3d-based transition metal oxides, and more generally represent a distinctive hallmark of strongly correlated states of matter. The recent discovery of charge order in various cuprate families has fuelled new interest into the role played by this incipient broken symmetry within the complex phase diagram of high-T(c) superconductors. Here, we use resonant X-ray scattering to resolve the main characteristics of the charge-modulated state in two cuprate families: Bi2Sr(2-x)La(x)CuO(6+δ) (Bi2201) and YBa2Cu3O(6+y) (YBCO). We detect no signatures of spatial modulations along the nodal direction in Bi2201, thus clarifying the inter-unit-cell momentum structure of charge order. We also resolve the intra-unit-cell symmetry of the charge-ordered state, which is revealed to be best represented by a bond order with modulated charges on the O-2p orbitals and a prominent d-wave character. These results provide insights into the origin and microscopic description of charge order in cuprates, and its interplay with superconductivity.
Collapse
Affiliation(s)
- R Comin
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - R Sutarto
- Canadian Light Source, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - F He
- Canadian Light Source, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - E H da Silva Neto
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [3] Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany [4] Quantum Materials Program, Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada
| | - L Chauviere
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [3] Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - A Fraño
- 1] Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany [2] Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein Straße 15, 12489 Berlin, Germany
| | - R Liang
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - W N Hardy
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - D A Bonn
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Y Yoshida
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan
| | - H Eisaki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan
| | - A J Achkar
- Department of Physics and Astronomy, University of Waterloo, Waterloo N2L 3G1, Canada
| | - D G Hawthorn
- Department of Physics and Astronomy, University of Waterloo, Waterloo N2L 3G1, Canada
| | - B Keimer
- Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - G A Sawatzky
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - A Damascelli
- 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada [2] Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| |
Collapse
|
183
|
Yang J, Yoshida Y, Cisar JO. Genetic basis of coaggregation receptor polysaccharide biosynthesis in Streptococcus sanguinis and related species. Mol Oral Microbiol 2015; 29:24-31. [PMID: 24397790 DOI: 10.1111/omi.12042] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2013] [Indexed: 11/28/2022]
Abstract
Interbacterial adhesion between streptococci and actinomyces promotes early dental plaque biofilm development. Recognition of coaggregation receptor polysaccharides (RPS) on strains of Streptococcus sanguinis, Streptococcus gordonii and Streptococcus oralis by Actinomyces spp. type 2 fimbriae is the principal mechanism of these interactions. Previous studies of genetic loci for synthesis of RPS (rps) and RPS precursors (rml, galE1 and galE2) in S. gordonii 38 and S. oralis 34 revealed differences between these strains. To determine whether these differences are strain-specific or species-specific, we identified and compared loci for polysaccharide biosynthesis in additional strains of these species and in several strains of the previously unstudied species, S. sanguinis. Genes for synthesis of RPS precursors distinguished the rps loci of different streptococci. Hence, rml genes for synthesis of TDP-L-Rha were in rps loci of S. oralis strains but at other loci in S. gordonii and S. sanguinis. Genes for two distinct galactose epimerases were also distributed differently. Hence, galE1 for epimerization of UDP-Glc and UDP-Gal was in galactose operons of S. gordonii and S. sanguinis strains but surprisingly, this gene was not present in S. oralis. Moreover, galE2 for epimerization of both UDP-Glc and UDP-Gal and UDP-GlcNAc and UDP-GalNAc was at a different locus in each species, including rps operons of S. sanguinis. The findings provide insight into cell surface properties that distinguish different RPS-producing streptococci and open an approach for identifying these bacteria based on the arrangement of genes for synthesis of polysaccharide precursors.
Collapse
Affiliation(s)
- J Yang
- Microbial Receptors Section, Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | | | | |
Collapse
|
184
|
Hayakawa T, Yoshida Y, Yasui M, Ito T, Wakamatsu JI, Hattori A, Nishimura T. Role of Heavy Meromyosin in Heat-Induced Gelation in Low Ionic Strength Solution Containingl-Histidine. J Food Sci 2015; 80:C1641-5. [DOI: 10.1111/1750-3841.12958] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 05/28/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Toru Hayakawa
- Meat Science Laboratory, Dept. of Animal and Food Hygiene; Obihiro Univ. of Agriculture and Veterinary Medicine; Nishi2-11, Inada-cho Obihiro Hokkaido 080-8555 Japan
| | - Yuri Yoshida
- Muscle Biology and Meat Science Laboratory, Graduate School of Agriculture; Hokkaido Univ; N-9, W-9, Kita-ku Sapporo Hokkaido 060-8589 Japan
| | - Masanori Yasui
- Electron Microscope Laboratory, Research Faculty of Agriculture; Hokkaido Univ; N-9, W-9, Kita-ku Sapporo Hokkaido 060-8589 Japan
| | - Toshiaki Ito
- Electron Microscope Laboratory, Research Faculty of Agriculture; Hokkaido Univ; N-9, W-9, Kita-ku Sapporo Hokkaido 060-8589 Japan
| | - Jun-ichi Wakamatsu
- Muscle Biology and Meat Science Laboratory, Graduate School of Agriculture; Hokkaido Univ; N-9, W-9, Kita-ku Sapporo Hokkaido 060-8589 Japan
| | - Akihito Hattori
- Muscle Biology and Meat Science Laboratory, Graduate School of Agriculture; Hokkaido Univ; N-9, W-9, Kita-ku Sapporo Hokkaido 060-8589 Japan
| | - Takanori Nishimura
- Muscle Biology and Meat Science Laboratory, Graduate School of Agriculture; Hokkaido Univ; N-9, W-9, Kita-ku Sapporo Hokkaido 060-8589 Japan
| |
Collapse
|
185
|
Abstract
The periodontal pathogen Porphyromonas gingivalis is known to express 2 distinct types of fimbriae: FimA and Mfa1 fimbriae. However, we previously reported that fimbria-like structures were found in a P. gingivalis strain in which neither FimA nor Mfa1 fimbriae were detected. In this study, we identified a major protein in the bacterial lysates of the strain, which has been reported as the 53-kDa major outer membrane protein of P. gingivalis (53K protein) and subsequently reported as a major fimbrilin of a novel-type fimbria. Sequencing of the chromosomal DNA of the strain showed that the 53k gene (encoding the 53K protein) was located at a locus corresponding to the mfa1 gene (encoding the Mfa1 protein, which is a major fimbrilin of Mfa1 fimbriae) of the ATCC 33277 type strain. However, the 53K and Mfa1 proteins showed a low amino acid sequence homology and different antigenicity. The 53K protein was detected in 34 of 84 (41%) P. gingivalis strains, while the Mfa1 protein was detected in 44% of the strains. No strain expressed both 53K and Mfa1 proteins. Additionally, fimbriae were normally expressed in mutants in which the 53k and mfa1 genes were interchanged. These results indicate that the 53K protein is another major fimbrilin of Mfa1 fimbriae in P. gingivalis.
Collapse
Affiliation(s)
- K Nagano
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Y Hasegawa
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Y Yoshida
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - F Yoshimura
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| |
Collapse
|
186
|
Oouchi M, Hasebe A, Hata H, Segawa T, Yamazaki Y, Yoshida Y, Kitagawa Y, Shibata KI. Age-related alteration of expression and function of TLRs and NK activity in oral candidiasis. Oral Dis 2015; 21:645-51. [PMID: 25704085 DOI: 10.1111/odi.12329] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 02/09/2015] [Accepted: 02/14/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Roles of aging or immune responses mediated by Toll-like receptors and natural killer cell in the onset or progression of human candidiasis remain unclear. This study was designed to elucidate the roles using peripheral blood mononuclear cells from healthy donors and patients with oral candidiasis. SUBJECTS AND METHODS Subjects tested were healthy volunteers and patients who visited Dental Clinical Division of Hokkaido University Hospital. The patients with oral candidiasis included 39 individuals (25-89 years of age) with major complaints on pain in oral mucosa and/or dysgeusia. Healthy volunteers include students (25-35 years of age) and teaching staffs (50-65 years of age) of Hokkaido University Graduate School of Dental Medicine. RESULTS Functions of Toll-like receptors 2 and 4 were downregulated significantly and the natural killer activity was slightly, but not significantly downregulated in aged healthy volunteers compared with healthy young volunteers. Functions of Toll-like receptors 2 and 4 and the natural killer activity were significantly downregulated in patients with oral candidiasis compared with healthy volunteers. CONCLUSION Downregulation of functions of Toll-like receptors 2 and 4 as well as natural killer activity is suggested to be associated with the onset or progression of oral candidiasis in human.
Collapse
Affiliation(s)
- M Oouchi
- Division of Oral Diagnosis, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan.,Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan
| | - A Hasebe
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan
| | - H Hata
- Division of Oral Diagnosis, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan
| | - T Segawa
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan
| | - Y Yamazaki
- Department of Gerondontology, Division of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Japan
| | - Y Yoshida
- Department of Biomaterials and Bioengineering, Division of Oral Health Sciences, Hokkaido University Graduate School of Dental Medicine, Japan
| | - Y Kitagawa
- Division of Oral Diagnosis, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan
| | - K-I Shibata
- Division of Oral Molecular Microbiology, Department of Oral Pathobiological Science, Hokkaido University Graduate School of Dental Medicine, Japan
| |
Collapse
|
187
|
Ohtsuka S, Sumizono M, Matsuda F, Yoshida Y, Sakakima H. Effects of preconditioning exercise on brain damage and neurotrophic factor expression after focal brain ischemia in rats. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.2030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
188
|
Fogo A, Ikoma M, Yoshida Y, Ichikawa I. Studies for pronounced susceptibility of deep nephrons to glomerular sclerosis in young animals. Contrib Nephrol 2015; 95:126-30. [PMID: 1807904 DOI: 10.1159/000420649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- A Fogo
- Vanderbilt University Medical Center, Nashville, Tenn
| | | | | | | |
Collapse
|
189
|
Yoshida Y, Ikoma M, Kawamura T, Fogo A, Ichikawa I. Internephron heterogeneity in susceptibility to glomerular sclerosis and responsiveness to therapeutic measures. Contrib Nephrol 2015; 95:107-11. [PMID: 1807900 DOI: 10.1159/000420646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Y Yoshida
- Vanderbilt University Medical Center, Nashville, Tenn
| | | | | | | | | |
Collapse
|
190
|
Shiiku C, Kikuchi Y, Atsuta Y, Yoshida Y, Kimura H. [Cavernous hemangioma of the right cardiac chamber;report of a case]. Kyobu Geka 2015; 68:314-316. [PMID: 25837006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cardiac cavernous hemangioma is an extremely rare benign tumor. A 53-year-old female had undergone resection of left breast cancer 9 years before, and her clinical course had been uneventful for nearly 9 years. She then experienced sudden fatigability and palpitations. Pericardial effusion and a tumor-like lesion, pressing the right side of the heart, were detected by echocardiography, computed tomography and magnetic resonance imaging. Though her symptoms were ameliorated with pericardial puncture, she was referred to our department for a definitive diagnosis and, if indicated, tumor resection. At surgery the tumor was poorly demarcated and most of it was resected under extracorporeal circulation. The histopathological examination revealed it was cavernous hemangioma. The patient's postoperative course has been uneventful without recurrence for approximately 2 years.
Collapse
Affiliation(s)
- Chikara Shiiku
- Department of Cardiovascular Surgery, National Obihiro Hospital, Obihiro, Japan
| | | | | | | | | |
Collapse
|
191
|
Kikuchi S, Suzuki R, Ohguchi H, Yoshida Y, Lu D, Cottini F, Jakubikova J, Bianchi G, Harada T, Gorgun G, Tai YT, Richardson PG, Hideshima T, Anderson KC. Class IIa HDAC inhibition enhances ER stress-mediated cell death in multiple myeloma. Leukemia 2015; 29:1918-27. [PMID: 25801913 DOI: 10.1038/leu.2015.83] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/05/2015] [Accepted: 03/12/2015] [Indexed: 01/14/2023]
Abstract
Histone deacetylase (HDAC) inhibitors have been extensively investigated as therapeutic agents in cancer. However, the biological role of class IIa HDACs (HDAC4, 5, 7 and 9) in cancer cells, including multiple myeloma (MM), remains unclear. Recent studies show HDAC4 interacts with activating transcription factor 4 (ATF4) and inhibits activation of endoplasmic reticulum (ER) stress-associated proapoptotic transcription factor C/EBP homologous protein (CHOP). In this study, we hypothesized that HDAC4 knockdown and/or inhibition could enhance apoptosis in MM cells under ER stress condition by upregulating ATF4, followed by CHOP. HDAC4 knockdown showed modest cell growth inhibition; however, it markedly enhanced cytotoxicity induced by either tunicamycin or carfilzomib (CFZ), associated with upregulating ATF4 and CHOP. For pharmacological inhibition of HDAC4, we employed a novel and selective class IIa HDAC inhibitor TMP269, alone and in combination with CFZ. As with HDAC4 knockdown, TMP269 significantly enhanced cytotoxicity induced by CFZ in MM cell lines, upregulating ATF4 and CHOP and inducing apoptosis. Conversely, enhanced cytotoxicity was abrogated by ATF4 knockdown, confirming that ATF4 has a pivotal role mediating cytotoxicity in this setting. These results provide the rationale for novel treatment strategies combining class IIa HDAC inhibitors with ER stressors, including proteasome inhibitors, to improve patient outcome in MM.
Collapse
Affiliation(s)
- S Kikuchi
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - R Suzuki
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - H Ohguchi
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Y Yoshida
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - D Lu
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - F Cottini
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - J Jakubikova
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - G Bianchi
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - T Harada
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - G Gorgun
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Y-T Tai
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - P G Richardson
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - T Hideshima
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - K C Anderson
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
192
|
Imamura H, Konomoto T, Tanaka E, Hisano S, Yoshida Y, Fujimura Y, Miyata T, Nunoi H. Familial C3 glomerulonephritis associated with mutations in the gene for complement factor B. Nephrol Dial Transplant 2015; 30:862-4. [DOI: 10.1093/ndt/gfv054] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Accepted: 02/04/2015] [Indexed: 11/14/2022] Open
|
193
|
Oze T, Hiramatsu N, Yakushijin T, Yamada R, Harada N, Morishita N, Oshita M, Mita E, Ito T, Inui Y, Inada M, Tamura S, Yoshihara H, Imai Y, Kato M, Miyagi T, Yoshida Y, Tatsumi T, Kasahara A, Hayashi N, Takehara T. The real impact of telaprevir dosage on the antiviral and side effects of telaprevir, pegylated interferon and ribavirin therapy for chronic hepatitis C patients with HCV genotype 1. J Viral Hepat 2015; 22:254-62. [PMID: 25081140 DOI: 10.1111/jvh.12289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 05/14/2014] [Indexed: 01/28/2023]
Abstract
Triple therapy with telaprevir, pegylated interferon and ribavirin has been reported to improve antiviral efficacy but have potentially severe adverse effects in patients with chronic hepatitis C. To avoid the severe effects of telaprevir, lowering the dose has been suggested. However, impact of dosage changes on antiviral and adverse effects remains unclear. One hundred and sixty-six Japanese patients with HCV genotype 1 were treated with triple therapy. The drug exposure of each medication was calculated by averaging the dose actually taken. The overall SVR rate was 82%. The telaprevir discontinuation rate was 26%. The factors associated with discontinuation were an older age (≥65 y.o.) and a higher average dose during treatment. The telaprevir discontinuation rates were 42%, 25% and 14% in patients at ≥35, 25-35 and <25 mg/kg/day of telaprevir and 58% in older patients at ≥35 mg/kg/day of TVR. The factors associated with SVR were treatment-naïve, relapse to previous treatment, higher average telaprevir dose during treatment and completion of treatment. The SVR rate was higher, at 91%, in patients at 25-35 mg/kg/day of telaprevir than the 71% and 78% observed in those at <25 and ≥35 mg/kg/day of drug. In Japanese patients, a mean telaprevir dose of 25-35 mg/kg/day during treatment can augment its efficacy in triple therapy for patients with HCV genotype 1.
Collapse
Affiliation(s)
- T Oze
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
194
|
Shiiku C, Kikuchi Y, Atsuta Y, Yoshida Y, Kimura F. [Cadiac lipoma of the right atrium;report of a case]. Kyobu Geka 2015; 68:218-220. [PMID: 25743556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cardiac lipoma is a rare benign tumor. A 42-year-old male was referred to our hospital to undergo thorough examination and treatment of a space-occupying right atrial lesion, detected incidentally by chest computed tomography(CT). After admission, it was diagnosed as cardiac lipoma by echocardiography, CT, and magnetic resonance imaging. We resected the tumor under cardiopulmonary bypass and reconstructed the right atrium using a bovine pericardial patch. The histopathological examination reveaed that the tumor was lipoma. The postoperative course has been uneventful without recurrence for nearly 2 years.
Collapse
Affiliation(s)
- Chikara Shiiku
- Department of Cardiovascular Surgry, National Obihiro Hospital, Obihiro, Japan
| | | | | | | | | |
Collapse
|
195
|
Nishijima K, Takahashi J, Orisaka M, Kurokawa T, Tamamura C, Yoshida A, Masuzaki H, Sekiya T, Yoshida Y, Kotsuji F. Authors' reply. BJOG 2015; 122:448-9. [PMID: 25623585 DOI: 10.1111/1471-0528.13259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2014] [Indexed: 11/29/2022]
Affiliation(s)
- K Nishijima
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
196
|
Ito M, Oishi K, Yoshida Y, Okumura T, Sato T, Naito E, Yokoi W, Sawada H. Effects of lactic acid bacteria on low-density lipoprotein susceptibility to oxidation and aortic fatty lesion formation in hyperlipidemic hamsters. Benef Microbes 2015; 6:287-93. [DOI: 10.3920/bm2014.0040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We investigated the effects of Streptococcus thermophilus YIT 2001, a strain of lactic acid bacteria, on the susceptibility of low-density lipoprotein (LDL) to oxidation and the formation of aortic fatty lesions in hyperlipidemic hamsters. S. thermophilus YIT 2001 had the highest in vitro antioxidative activity against LDL oxidation among the 79 strains of lactic acid bacteria and bifidobacteria tested, which was about twice that of S. thermophilus YIT 2084. The lag time of LDL oxidation in the YIT 2001 feeding group was significantly longer than in controls, but was unchanged in the YIT 2084 group. After the feeding of YIT 2001, lag times were prolonged and areas of aortic fatty lesions were dose-dependently attenuated, although there were no effects on plasma lipid levels. These results suggest that YIT 2001 has the potential to prevent the formation of aortic fatty lesions by inhibiting LDL oxidation.
Collapse
Affiliation(s)
- M. Ito
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| | - K. Oishi
- Yakult Honsha European Research Center for Microbiology ESV, Technologiepark 4, 9052 Gent-Zwijnaarde, Belgium
| | - Y. Yoshida
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| | - T. Okumura
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| | - T. Sato
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| | - E. Naito
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| | - W. Yokoi
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| | - H. Sawada
- Yakult Central Institute, Yaho 1796, Kunitachi-shi, Tokyo, 186-8650 Japan
| |
Collapse
|
197
|
Kanada-En’yo Y, Kobayashi F, Suhara T, Yoshida Y. Cluster features of stable and unstable nuclei in the p-shell region. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158800023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
198
|
Yoshino K, Umeno A, Shichiri M, Watanabe H, Ishida N, Kojima M, Iwaki S, Hagihara Y, Nakamura M, Yoshida Y. Biomarkers for the evaluation of immunological properties during the shikoku walking pilgrimage. J BIOL REG HOMEOS AG 2015; 29:51-62. [PMID: 25864741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is important to determine the immunological properties for the maintenance of health. We chose the Shikoku Walking Pilgrimage to assess the proper biomarkers for the evaluation of immunological properties. We examined whether the Shikoku Walking Pilgrimage could have a positive effect on the mental and physical health of walking participants by using several biomarkers proposed by our laboratory. Twelve non-randomized healthy male volunteers including 3 twice attendees walked the Shikoku Walking Pilgrimage distance of 58.9 km over 3 days. Plasma, serum, urine, and saliva were collected from the volunteers during the pilgrimage and at 1 week before and after it. Immunological biomarkers, including lipid metabolism, oxidative stress, immune function, and catecholamines, were measured. Additionally, mood state scores, alertness, autonomic nervous system activity, and body motion levels during sleep were assessed. A significant decrease was observed in the subjective tension-anxiety levels and in the concentrations of serum low-density lipoprotein cholesterol, plasma hydroxyoctadecadienoic acid (HODE), and urine adrenaline during the pilgrimage as compared to the values of these parameters before the participants embarked on the pilgrimage. The serum levels of brain-derived neurotrophic factor (BDNF) were significantly increased 1 week after the pilgrimage relative to those assessed previously. No significant differences in subjective fatigue and the flicker perception threshold were observed. These results suggest that the Shikoku Walking Pilgrimage can exert a positive effect on mental and physical health as particularly shown in the reduction of tensionanxiety and oxidative stress without the accompaniment of fatigue. HODE correlated significantly with typical immunological marker natural killer cell activity and immunoglobulin G. This suggests that there are promising biomarkers such as HODE, NK activity, BDNF, LDL-c, and IgG for assessing the immunological properties.
Collapse
Affiliation(s)
- K Yoshino
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - A Umeno
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Hayashi-cho, Takamatsu, Kagawa, Japan
| | - M Shichiri
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - H Watanabe
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - N Ishida
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - M Kojima
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - S Iwaki
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - Y Hagihara
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, Japan
| | - M Nakamura
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Hayashi-cho, Takamatsu, Kagawa, Japan
| | - Y Yoshida
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Hayashi-cho, Takamatsu, Kagawa, Jap
| |
Collapse
|
199
|
Takeishi K, Shirabe K, Yoshida Y, Tsutsui Y, Kurihara T, Kimura K, Itoh S, Harimoto N, Yamashita YI, Ikegami T, Yoshizumi T, Nishie A, Maehara Y. Correlation between portal vein anatomy and bile duct variation in 407 living liver donors. Am J Transplant 2015; 15:155-60. [PMID: 25521764 DOI: 10.1111/ajt.12965] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/14/2014] [Accepted: 07/31/2014] [Indexed: 01/25/2023]
Abstract
Our aim was to determine whether variant bile duct (BD) anatomy is associated with portal vein (PV) and/or hepatic artery (HA) anatomy. We examined the associations between BD anatomy and PV and/or HA anatomy in 407 living donor transplantation donors. We also examined whether the right posterior BD (RPBD) course was associated with the PV and/or HA anatomy. Variant PV, HA and BD anatomies were found in 11%, 25% and 25%, respectively, of 407 donors enrolled in this study. The presence of a variant BD was more frequently associated with a variant PV than with a normal PV (61% vs. 20%, p < 0.0001). By contrast, the presence of a variant HA was not associated with a variant BD. A supraportal RPBD was found in 357 donors (88%) and an infraportal RPBD was found in 50 donors (12%). An infraportal RPBD was significantly more common in donors with a variant PV than in donors with a normal PV (30% vs. 10%, p = 0.0004). Variant PV, but not variant HA, anatomies were frequently associated with variant BD anatomy. Additionally, an infraportal RPBD was more common in donors with a variant PV than in donors with a normal PV.
Collapse
Affiliation(s)
- K Takeishi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
200
|
Murotomi K, Umeno A, Yasunaga M, Shichiri M, Ishida N, Abe H, Yoshida Y, Nakajima Y. Switching from singlet-oxygen-mediated oxidation to free-radical-mediated oxidation in the pathogenesis of type 2 diabetes in model mouse. Free Radic Res 2014; 49:133-8. [DOI: 10.3109/10715762.2014.985218] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|