1
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Yatabe Y, Tanioka T, Waseda Y, Yamaguchi K, Ogo T, Fujiwara H, Okuno K, Kawada K, Haruki S, Tokunaga M, Fujii Y, Kinugasa Y. Inguinal hernia repair in patients with artificial urinary sphincter after radical prostatectomy. Hernia 2024:10.1007/s10029-024-03040-w. [PMID: 38649504 DOI: 10.1007/s10029-024-03040-w] [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] [Received: 02/01/2024] [Accepted: 04/03/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE Stress urinary incontinence (UI) often develops after radical prostatectomy for prostate cancer, and in those patients with moderate-to-severe stress UI an artificial urinary sphincter (AUS) is implanted. Inguinal hernias (IHs) often occur after radical prostatectomy. As the prevalence of AUS implantation increases, it is possible to encounter patients with IHs undergoing AUS implantation (IHA). This study investigated our treatment and discussed an appropriate approach for IHAs. METHODS We retrospectively investigated patients who underwent IH repair with AUS implantation at our hospital from January 2018 to March 2023. We classified IHAs into Types A-D based on the positions of the IHs and AUS devices (the positions of the control pump, pressure-regulating balloon, and connecting tube). The hernia and control pump were ipsilateral in Types A and B, whereas the hernia and pressure-regulating balloon were ipsilateral in Types A and C. RESULTS This study included 12 IHs of 11 patients. The median patient age was 77 years. We conducted open repair in nine patients with all types and laparoscopic repair in two patients with Type B. The median operation times for unilateral and bilateral repairs were 96 and 182 min, respectively. There were no complications with AUS or hernia surgeries. CONCLUSION IHA has its own characteristics, and multidisciplinary knowledge thereof will help surgeons safely perform IH surgery.
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Affiliation(s)
- Y Yatabe
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - T Tanioka
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan.
| | - Y Waseda
- Department of Urology, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - K Yamaguchi
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - T Ogo
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - H Fujiwara
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - K Okuno
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - K Kawada
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - S Haruki
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - M Tokunaga
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
| | - Y Fujii
- Department of Urology, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Kinugasa
- Department of Gastrointestinal Surgery, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, Japan
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2
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Kinoshita Y, Miyakawa T, Xu X, Tokunaga M. Long-distance polarizing microscope system combined with solenoid-type magnet for microscopy and simultaneous measurement of physical parameters. Rev Sci Instrum 2022; 93:073702. [PMID: 35922319 DOI: 10.1063/5.0094747] [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] [Received: 04/05/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
We have developed a long-distance polarizing microscope system combined with a solenoid-type superconducting magnet. By inserting an infinity-corrected objective lens into the magnet, direct or polarizing microscope images are observed in magnetic fields of up to 12 T at various temperatures down to 2 K. Through magneto-optical measurements in the transmission geometry, the local magnetization process of a transparent magnet is evaluated in areas of 10 × 10 µm2. This system enables simultaneous measurements of other physical properties over a wide range of temperatures and magnetic fields. The basic principle of the proposed long-distance microscopy can be applied to imaging experiments in various research fields, particularly biology and chemistry.
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Affiliation(s)
- Y Kinoshita
- The Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - T Miyakawa
- Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - X Xu
- Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - M Tokunaga
- The Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
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3
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Arai Y, Kuroda K, Nomoto T, Tin ZH, Sakuragi S, Bareille C, Akebi S, Kurokawa K, Kinoshita Y, Zhang WL, Shin S, Tokunaga M, Kitazawa H, Haga Y, Suzuki HS, Miyasaka S, Tajima S, Iwasa K, Arita R, Kondo T. Multipole polaron in the devil's staircase of CeSb. Nat Mater 2022; 21:410-415. [PMID: 35145257 DOI: 10.1038/s41563-021-01188-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Rare-earth intermetallic compounds exhibit rich phenomena induced by the interplay between localized f orbitals and conduction electrons. However, since the energy scale of the crystal-electric-field splitting is only a few millielectronvolts, the nature of the mobile electrons accompanied by collective crystal-electric-field excitations has not been unveiled. Here, we examine the low-energy electronic structures of CeSb through the anomalous magnetostructural transitions below the Néel temperature, ~17 K, termed the 'devil's staircase', using laser angle-resolved photoemission, Raman and neutron scattering spectroscopies. We report another type of electron-boson coupling between mobile electrons and quadrupole crystal-electric-field excitations of the 4f orbitals, which renormalizes the Sb 5p band prominently, yielding a kink at a very low energy (~7 meV). This coupling strength is strong and exhibits anomalous step-like enhancement during the devil's staircase transition, unveiling a new type of quasiparticle, named the 'multipole polaron', comprising a mobile electron dressed with a cloud of the quadrupole crystal-electric-field polarization.
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Affiliation(s)
- Y Arai
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Kenta Kuroda
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan.
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima, Japan.
| | - T Nomoto
- Department of Applied Physics, The University of Tokyo, Tokyo, Japan
| | - Z H Tin
- Department of Physics, Osaka University, Toyonaka, Japan
| | - S Sakuragi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - C Bareille
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - S Akebi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - K Kurokawa
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Y Kinoshita
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - W-L Zhang
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Department of Engineering and Applied Sciences, Sophia University, Tokyo, Japan
| | - S Shin
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Office of University Professor, The University of Tokyo, Kashiwa, Japan
| | - M Tokunaga
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Trans-scale Quantum Science Institute, The University of Tokyo, Tokyo, Japan
| | - H Kitazawa
- National Institute for Materials Science, Tsukuba, Japan
| | - Y Haga
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Japan
| | - H S Suzuki
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - S Miyasaka
- Department of Physics, Osaka University, Toyonaka, Japan
| | - S Tajima
- Department of Physics, Osaka University, Toyonaka, Japan
| | - K Iwasa
- Frontier Research Center for Applied Atomic Sciences and Institute of Quantum Beam Science, Ibaraki University, Tokai, Japan
| | - R Arita
- Department of Applied Physics, The University of Tokyo, Tokyo, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
| | - Takeshi Kondo
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
- Trans-scale Quantum Science Institute, The University of Tokyo, Tokyo, Japan
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4
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Tayama M, Inose T, Yamauchi N, Nakashima K, Tokunaga M, Kato C, Gonda K, Kobayashi Y. Fabrication of gold-immobilized quantum dots/silica core–shell nanoparticles and their multimodal imaging properties. Particulate Science and Technology 2022. [DOI: 10.1080/02726351.2021.1934918] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- M. Tayama
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - T. Inose
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - N. Yamauchi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - K. Nakashima
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - M. Tokunaga
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - C. Kato
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - K. Gonda
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
- International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Sendai, Japan
| | - Y. Kobayashi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
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5
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Nakamura D, Matsuda YH, Ikeda A, Miyake A, Tokunaga M, Takeyama S, Kanomata T. Magnetoconduction in the Correlated Semiconductor FeSi in Ultrastrong Magnetic Fields up to a Semiconductor-to-Metal Transition. Phys Rev Lett 2021; 127:156601. [PMID: 34678000 DOI: 10.1103/physrevlett.127.156601] [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] [Received: 05/07/2021] [Revised: 07/09/2021] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
Magnetoresistance of the correlated narrow-gap semiconductor FeSi was investigated by the radio frequency self-resonant spiral coil technique in magnetic fields up to 500 T, which is supplied by an electromagnetic flux compression megagauss generator. Semiconductor-to-metal transition accomplishes around 270 T observed as a sharp kink in the magnetoresistance, which implies the closing of the hybridization gap by the Zeeman shift of band edges. In the temperature-magnetic field phase diagram, the semiconductor-metal transition field is found to be almost independent of temperature, which is in contrast to a characteristic magnetic field associated with the hopping magnetoconduction in the in-gap localized states, exhibiting a notable temperature dependence.
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Affiliation(s)
- D Nakamura
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y H Matsuda
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Ikeda
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Miyake
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - M Tokunaga
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - S Takeyama
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Kanomata
- Research Institute for Engineering and Technology, Tohoku Gakuin University, Tagajo, Miyagi 985-8537, Japan
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6
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Takaishi M, Ishimoto T, Tokunaga M, Kokubu C, Takeda J, Sano S. 104 Ahed, a novel spliceosomal protein, is essential for the development and maintenance of the epidermis through regulation of mRNA splicing. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.107] [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]
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7
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Terashima M, Sano T, Mizusawa J, Uemura K, Tokunaga M, Omori T, Cho H, Hasegawa Y, Akiyama Y, Tsujitani H, Kawashima Y, Kawachi Y, Lee S, Boku N, Yoshikawa T, Sasako M. 1417P Prediction of the peritoneal recurrence by macroscopic diagnosis of the serosal invasion in gastric cancer: Supplementary analysis of JCOG0110 study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1526] [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: 11/17/2022] Open
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8
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Imajo S, Akutsu H, Kurihara R, Yajima T, Kohama Y, Tokunaga M, Kindo K, Nakazawa Y. Anisotropic Fully Gapped Superconductivity Possibly Mediated by Charge Fluctuations in a Nondimeric Organic Complex. Phys Rev Lett 2020; 125:177002. [PMID: 33156658 DOI: 10.1103/physrevlett.125.177002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
We investigate low-temperature electronic properties of the nondimeric organic superconductor β^{''}-(ET)_{4}[(H_{3}O)Ga(C_{2}O_{4})_{3}]PhNO_{2}. By examining ultrasonic properties, charge disproportionation (CD) without magnetic field dependence is detected below T_{CD}∼8 K just above the superconducting critical temperature T_{c}∼6 K. From quantum oscillations in high fields, we find variation in the Fermi surface and mass enhancement induced by the CD. Heat capacity studies elucidate that the superconducting gap function is fully gapped in the Fermi surface, but anisotropic with fourfold symmetry. We point out that the pairing mechanism of the superconductivity is possibly dominated by charge fluctuations.
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Affiliation(s)
- S Imajo
- The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Akutsu
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - R Kurihara
- The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Yajima
- The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kohama
- The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - M Tokunaga
- The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - K Kindo
- The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Nakazawa
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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9
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Misawa K, Kurokawa Y, Mizusawa J, Takiguchi S, Doki Y, Makino S, Choda Y, Takeno A, Tokunaga M, Sano T, Sasako M, Yoshikawa T, Terashima M. 1475P Negative impact of intraoperative blood loss on long-term outcome after curative gastrectomy for cT3/4a gastric cancer - Exploratory analysis of JCOG1001 study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1981] [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: 11/27/2022] Open
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10
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Kuroda K, Arai Y, Rezaei N, Kunisada S, Sakuragi S, Alaei M, Kinoshita Y, Bareille C, Noguchi R, Nakayama M, Akebi S, Sakano M, Kawaguchi K, Arita M, Ideta S, Tanaka K, Kitazawa H, Okazaki K, Tokunaga M, Haga Y, Shin S, Suzuki HS, Arita R, Kondo T. Devil's staircase transition of the electronic structures in CeSb. Nat Commun 2020; 11:2888. [PMID: 32514054 PMCID: PMC7280508 DOI: 10.1038/s41467-020-16707-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/15/2020] [Indexed: 12/02/2022] Open
Abstract
Solids with competing interactions often undergo complex phase transitions with a variety of long-periodic modulations. Among such transition, devil's staircase is the most complex phenomenon, and for it, CeSb is the most famous material, where a number of the distinct phases with long-periodic magnetostructures sequentially appear below the Néel temperature. An evolution of the low-energy electronic structure going through the devil's staircase is of special interest, which has, however, been elusive so far despite 40 years of intense research. Here, we use bulk-sensitive angle-resolved photoemission spectroscopy and reveal the devil's staircase transition of the electronic structures. The magnetic reconstruction dramatically alters the band dispersions at each transition. Moreover, we find that the well-defined band picture largely collapses around the Fermi energy under the long-periodic modulation of the transitional phase, while it recovers at the transition into the lowest-temperature ground state. Our data provide the first direct evidence for a significant reorganization of the electronic structures and spectral functions occurring during the devil's staircase.
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Affiliation(s)
- Kenta Kuroda
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan.
| | - Y Arai
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - N Rezaei
- Department of Physics, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - S Kunisada
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - S Sakuragi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Alaei
- Department of Physics, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - Y Kinoshita
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - C Bareille
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - R Noguchi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Nakayama
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - S Akebi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Sakano
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
- Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - K Kawaguchi
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Arita
- Hiroshima Synchrotron Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
| | - S Ideta
- UVSOR Facility, Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - K Tanaka
- UVSOR Facility, Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - H Kitazawa
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - K Okazaki
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Tokunaga
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Y Haga
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - S Shin
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - H S Suzuki
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - R Arita
- Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Takeshi Kondo
- ISSP, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
- Trans-scale Quantum Science Institute, University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
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11
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Takaishi M, Ishimoto T, Tokunaga M, Kokubu C, Takeda J, Sano S. 213 Ahed plays crucial roles in growth and differentiation of epidermal keratinocytes. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.214] [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: 11/30/2022]
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12
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Nishimura T, Sakai H, Mori H, Akiba K, Usui H, Ochi M, Kuroki K, Miyake A, Tokunaga M, Uwatoko Y, Katayama K, Murakawa H, Hanasaki N. Large Enhancement of Thermoelectric Efficiency Due to a Pressure-Induced Lifshitz Transition in SnSe. Phys Rev Lett 2019; 122:226601. [PMID: 31283289 DOI: 10.1103/physrevlett.122.226601] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 04/18/2019] [Indexed: 06/09/2023]
Abstract
The Lifshitz transition, a change in Fermi surface topology, is likely to greatly influence exotic correlated phenomena in solids, such as high-temperature superconductivity and complex magnetism. However, since the observation of Fermi surfaces is generally difficult in the strongly correlated systems, a direct link between the Lifshitz transition and quantum phenomena has been elusive so far. Here, we report a marked impact of the pressure-induced Lifshitz transition on thermoelectric performance for SnSe, a promising thermoelectric material without a strong electron correlation. By applying pressure up to 1.6 GPa, we have observed a large enhancement of the thermoelectric power factor by more than 100% over a wide temperature range (10-300 K). Furthermore, the high carrier mobility enables the detection of quantum oscillations of resistivity, revealing the emergence of new Fermi pockets at ∼0.86 GPa. The observed thermoelectric properties linked to the multivalley band structure are quantitatively reproduced by first-principles calculations, providing novel insight into designing the SnSe-related materials for potential valleytronic as well as thermoelectric applications.
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Affiliation(s)
- T Nishimura
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Sakai
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
| | - H Mori
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - K Akiba
- The Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - H Usui
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Ochi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - K Kuroki
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - A Miyake
- The Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - M Tokunaga
- The Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - Y Uwatoko
- The Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - K Katayama
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Murakawa
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - N Hanasaki
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
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13
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Okuma R, Nakamura D, Okubo T, Miyake A, Matsuo A, Kindo K, Tokunaga M, Kawashima N, Takeyama S, Hiroi Z. A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet. Nat Commun 2019; 10:1229. [PMID: 30874548 PMCID: PMC6420565 DOI: 10.1038/s41467-019-09063-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [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: 09/17/2018] [Accepted: 02/13/2019] [Indexed: 11/30/2022] Open
Abstract
Geometrical frustration and a high magnetic field are two key factors for realizing unconventional quantum states in magnetic materials. Specifically, conventional magnetic order can potentially be destroyed by competing interactions and may be replaced by an exotic state that is characterized in terms of quasiparticles called magnons, the density and chemical potential of which are controlled by the magnetic field. Here we show that a synthetic copper mineral, Cd-kapellasite, which comprises a kagomé lattice consisting of corner-sharing triangles of spin-1/2 Cu2+ ions, exhibits an unprecedented series of fractional magnetization plateaus in ultrahigh magnetic fields of up to 160 T. We propose that these quantum states can be interpreted as crystallizations of emergent magnons localized on the hexagon of the kagomé lattice.
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Affiliation(s)
- R Okuma
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan.
| | - D Nakamura
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - T Okubo
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan
| | - A Miyake
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - A Matsuo
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - K Kindo
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M Tokunaga
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - N Kawashima
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - S Takeyama
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Z Hiroi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
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Sato Y, Mizusawa J, Nakamura K, Fukagawa T, Katai H, Haruta S, Yamada M, Takagi M, Tamura S, Yoshimura T, Inada T, Hirabayashi N, Wada I, Kodera Y, Tokunaga M, Yoshikawa T, Boku N, Sano T, Sasako M, Terashima M. Diagnosis of invasion depth in resectable advanced gastric cancer for neoadjuvant chemotherapy: An exploratory analysis of JCOG1302A. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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15
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Ishimoto T, Takaishi M, Tokunaga M, Kokubu C, Takeda J, Sano S. 645 Ahed plays crucial roles in homeostatic maintenance of epidermis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.654] [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: 10/17/2022]
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Ishikawa A, Tokunaga M, Matsumoto I, Minamihisamatsu T, Uchida S, Maeda J, Ji B, Takuwa H, Shimada H, Shinoto H, Hirano S, Kuwabara S, Higuchi M, Sahara N. Utilities of tau-pet and TSPO-pet for diagnosing severity of tau-induced disease progression. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1869] [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: 11/29/2022]
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Takekiyo T, Dozono K, Nara S, Murayama Y, Minamihama N, Nakano N, Kubota A, Tokunaga M, Miyazono T, Takeuchi S, Takatsuka Y, Utsunomiya A. Gender differences in physical function and muscle mass change in patients undergoing allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2017; 52:1460-1462. [PMID: 28692022 DOI: 10.1038/bmt.2017.156] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- T Takekiyo
- Department of Rehabilitation, Imamura Bun-in Hospital, Kagoshima, Japan
| | - K Dozono
- Department of Rehabilitation Medicine, Imamura Bun-in Hospital, Kagoshima, Japan
| | - S Nara
- Department of Rehabilitation Medicine, Imamura Bun-in Hospital, Kagoshima, Japan
| | - Y Murayama
- Department of Rehabilitation, Imamura Bun-in Hospital, Kagoshima, Japan
| | - N Minamihama
- Department of Rehabilitation, Imamura Bun-in Hospital, Kagoshima, Japan
| | - N Nakano
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - A Kubota
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - M Tokunaga
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - T Miyazono
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - S Takeuchi
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - Y Takatsuka
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
| | - A Utsunomiya
- Department of Hematology, Imamura Bun-in Hospital, Kagoshima, Japan
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18
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Tokunaga M, Ito S, Yoshikawa T, Nunobe S, Fukagawa T, Misawa K, Cho H, Katai H, Sano T, Terashima M. Prognostic factors for survival in patients with pT1 N+ or T2–3 N0 gastric cancer in Japan. Br J Surg 2017; 104:885-890. [DOI: 10.1002/bjs.10509] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/07/2016] [Accepted: 01/13/2017] [Indexed: 01/22/2023]
Abstract
Abstract
Background
The outcome for pT1 N+ or pT2–3 N0 gastric cancer is favourable, but some patients suffer from recurrent disease. The aim of this study was to identify prognostic factors in patients with pT1 N+ or pT2–3 N0 gastric cancer.
Methods
This was a multicentre, retrospective cohort study. All patients with pT1 N+ or pT2–3 N0 gastric cancer who underwent curative gastrectomy at five high-volume, specialized cancer centres in Japan between 2000 and 2008 were included. Demographic, clinical, surgical and pathological data were collected. Independent prognostic factors were identified using a Cox proportional hazards regression model.
Results
Some 1442 patients were included. The 5-year overall survival rate for patients with pT1 N+ or pT2–3 N0 gastric cancer was 92·0 per cent. Multivariable analysis for overall survival identified age (hazard ratio (HR) 2·67, 95 per cent c.i. 2·09 to 3·43), sex (HR 0·57, 0·39 to 0·83) and clinical tumour depth (cT) (HR 1·45, 1·06 to 1·98) as independent prognostic factors.
Conclusion
Survival of patients with pT1 N+ or pT2–3 N0 gastric cancer is good. Age 65 years or above, male sex and cT2-4 category are associated with worse overall survival.
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Affiliation(s)
- M Tokunaga
- Division of Gastric Surgery, Shizuoka Cancer Centre, Shizuoka, Japan
| | - S Ito
- Department of Gastroenterological Surgery, Aichi Cancer Centre Hospital, Aichi, Japan
| | - T Yoshikawa
- Department of Gastrointestinal Surgery, Kanagawa Cancer Centre, Kanagawa, Japan
| | - S Nunobe
- Department of Gastroenterological Surgery, Cancer Institute Ariake Hospital, Tokyo, Japan
| | - T Fukagawa
- Department of Gastric Surgery, National Cancer Centre Hospital, Tokyo, Japan
| | - K Misawa
- Department of Gastroenterological Surgery, Aichi Cancer Centre Hospital, Aichi, Japan
| | - H Cho
- Department of Gastrointestinal Surgery, Kanagawa Cancer Centre, Kanagawa, Japan
| | - H Katai
- Department of Gastric Surgery, National Cancer Centre Hospital, Tokyo, Japan
| | - T Sano
- Department of Gastroenterological Surgery, Cancer Institute Ariake Hospital, Tokyo, Japan
| | - M Terashima
- Division of Gastric Surgery, Shizuoka Cancer Centre, Shizuoka, Japan
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Terashima M, Hatakeyama K, Kusuhara M, Makuuchi R, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Hikage M, Kaji S, Ohshima K, Ohnami S, Urakami K, Yamaguchi K. Genetic analysis of gastric cancer with distinctive family history. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw371.27] [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: 11/14/2022] Open
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Tokunaga M, Makuuchi R, Tanizawa Y, Bando E, Kawamura T, Terashima M. Efficacy of staging laparoscopy for type 4 and large type 3 gastric cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw371.54] [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: 11/13/2022] Open
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21
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Makuuchi R, Hatakeyama K, Terashima M, Kusuhara M, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Hikage M, Kaji S, Ohshima K, Urakami K, Yamaguchi K. New approach to gastric cancer classification based on TP53 mutation. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw371.39] [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
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22
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Tanizawa Y, Bando E, Tokunaga M, Kawamura T, Makuuchi R, Kinugasa Y, Tsubosa Y, Uesaka K, Terashima M. 59. Efficacy of surgical treatment for responders to chemotherapy for gastric cancer with para-aortic lymph node metastasis. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.065] [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
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23
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Makuuchi R, Sugisawa N, Kaji S, Hikage M, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Terashima M. Enhanced recovery after surgery for gastric cancer and an assessment of preoperative carbohydrate loading. Eur J Surg Oncol 2016; 43:210-217. [PMID: 27554250 DOI: 10.1016/j.ejso.2016.07.140] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 07/25/2016] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND We previously reported on the feasibility of enhanced recovery after surgery (ERAS) protocol for gastric cancer with a prospective phase II study, but the superiority of this approach over non-ERAS perioperative management remains unclear. Preoperative carbohydrate loading, an important element of the ERAS protocol, has been shown to reduce insulin resistance, but its effects on clinical endpoints in gastric cancer surgery remain controversial. The aim of this study was to clarify the efficacy of the ERAS protocol for gastric cancer surgery, with particular focus on preoperative carbohydrate loading. METHODS In this ERAS case-control study, we enrolled 121 patients as a case group and 259 patients undergoing gastrectomy for gastric cancer with our conventional perioperative management as a control group. Matched-pair analysis was performed to balance the patients' characteristics for comparison analysis. RESULTS After matching, 108 patients were included in each group. Postoperative hospital stay was significantly shorter in the ERAS group than in the control group (8 days vs. 9 days, p < 0.001), while the incidence of Clavien-Dindo classification grade II or more postoperative complication was similar between the groups (11.1% vs. 15.7%, p = 0.325). No significant differences were found in serum albumin level, body weight, or grip strength between the groups before surgery and at 1 week and 1 month after surgery. CONCLUSION Use of the ERAS protocol for gastric cancer shortened the length of postoperative hospital stay without increasing complications. Preoperative carbohydrate loading didn't improve the postoperative nutritional status or maintain the muscle strength postoperatively.
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Affiliation(s)
- R Makuuchi
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - N Sugisawa
- Department of Surgery, Tohoku University Graduate School of Medicine, 2-1, Seiryo-Machi, Aoba-Ku, Sendai-Shi, Miyagi, 980-8575, Japan
| | - S Kaji
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - M Hikage
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - M Tokunaga
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Y Tanizawa
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - E Bando
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - T Kawamura
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - M Terashima
- Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan.
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Tanizawa Y, Bando E, Tokunaga M, Kawamura T, Makuuchi R, Nanri K, Terashima M. PD-003 Incidence and risk factors of deep venous thrombosis detected by routine surveillance ultrasonography before surgery in patients with gastric cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv234.03] [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
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26
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Ohashi Y, Sumitani K, Tokunaga M, Ishihara N, Okubo T, Fujisawa T. Consumption of partially hydrolysed guar gum stimulates Bifidobacteria and butyrate-producing bacteria in the human large intestine. Benef Microbes 2015; 6:451-5. [PMID: 25519526 DOI: 10.3920/bm2014.0118] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 01/02/2023]
Abstract
Partially hydrolysed guar gum (PHGG) is a water-soluble dietary fibre that is non-digestible in the upper gastrointestinal tract. It is believed that PHGG benefits the health of hosts by altering the colonic microbiota and stimulating short-chain fatty acid (SCFA) production. However, it remains unclear which bacteria ferment PHGG in the human large intestine. In this study, the effect of PHGG on faecal bacteria was analysed to specify the bacteria that contribute to the fermentation of PHGG in the human large intestine. Ten healthy volunteers consumed PHGG (6 g/day) for 2 weeks. Faeces were collected at 2 weeks prior to consumption, at the end of 2 weeks of consumption, and 2 weeks after consumption of PHGG. Bacterial DNA was extracted from these collected faeces and subjected to real-time PCR using bacterial group- or species-specific primers. The copy number of the butyryl-CoA CoA-transferase gene and the 16S rRNA gene copy numbers of Bifidobacterium, the Clostridium coccoides group, the Roseburia/ Eubacterium rectale group, Eubacterium hallii, and butyrate-producing bacterium strain SS2/1 were significantly increased by the intake of PHGG. Other bacteria and bacterial groups were not significantly influenced by the intake of PHGG. It was believed that the Roseburia/E. rectale group bacteria, Bifidobacterium, the lactate-utilising, butyrate-producing bacteria, E. hallii and bacterium strain SS2/1, would contribute to the fermentation of PHGG in the human large intestine. PHGG may benefit health by stimulating Bifidobacterium and butyrate-producing bacteria in the human large intestine.
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Affiliation(s)
- Y Ohashi
- 1 Laboratory of Food Hygiene, Department of Food Science and Technology, Nippon Veterinary and Life Science University, 1-7-1, Kyonan-cho, Musashino, Tokyo 180-8602, Japan
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Tokunaga M, Akaki M, Ito T, Miyahara S, Miyake A, Kuwahara H, Furukawa N. Magnetic control of transverse electric polarization in BiFeO3. Nat Commun 2015; 6:5878. [DOI: 10.1038/ncomms6878] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 11/17/2014] [Indexed: 11/09/2022] Open
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28
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Nakano N, Kubota A, Tokunaga M, Tokunaga M, Itoyama T, Makino T, Takeuchi S, Takatsuka Y, Utsunomiya A. High incidence of CMV infection in adult T-cell leukemia/lymphoma patients after allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2014; 49:1548-9. [DOI: 10.1038/bmt.2014.204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Terashima M, Hatakeyama K, Yamakawa Y, Miki Y, Makuuchi R, Honda S, Tatsubayashi T, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Oshima K, Mochizuki T. Prognostic Significance of Survivin Expression in Patients with Gastric Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.47] [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
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Tokunaga M, Kawamura A, Omori A, Hishinuma F. Characterization of Mouseα-Amylase Secreted fromSaccharomyces cerevisiaeby the pGKL 128 kDa Killer Secretion Signal. Biosci Biotechnol Biochem 2014; 56:155-6. [PMID: 1368131 DOI: 10.1271/bbb.56.155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M Tokunaga
- Laboratories of Molecular Genetics, Mitsubishi Kasei Institute of Life Sciences, Tokyo, Japan
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Murakawa H, Bahramy MS, Tokunaga M, Kohama Y, Bell C, Kaneko Y, Nagaosa N, Hwang HY, Tokura Y. Detection of Berry's Phase in a Bulk Rashba Semiconductor. Science 2013; 342:1490-3. [DOI: 10.1126/science.1242247] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kihara T, Kohama Y, Hashimoto Y, Katsumoto S, Tokunaga M. Adiabatic measurements of magneto-caloric effects in pulsed high magnetic fields up to 55 T. Rev Sci Instrum 2013; 84:074901. [PMID: 23902090 DOI: 10.1063/1.4811798] [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: 06/02/2023]
Abstract
Magneto-caloric effects (MCEs) measurement system in adiabatic condition is proposed to investigate the thermodynamic properties in pulsed magnetic fields up to 55 T. With taking the advantage of the fast field-sweep rate in pulsed field, adiabatic measurements of MCEs were carried out at various temperatures. To obtain the prompt response of the thermometer in the pulsed field, a thin film thermometer is grown directly on the sample surfaces. The validity of the present setup was demonstrated in the wide temperature range through the measurements on Gd at about room temperature and on Gd3Ga5O12 at low temperatures. The both results show reasonable agreement with the data reported earlier. By comparing the MCE data with the specific heat data, we could estimate the entropy as functions of magnetic field and temperature. The results demonstrate the possibility that our approach can trace the change in transition temperature caused by the external field.
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Affiliation(s)
- T Kihara
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Tokunaga M, Endo Y, Fujisawa A, Tanioka M, Nomura T, Miyachi Y. Improvement in telangiectatic rosacea as a side-effect of monthly docetaxel therapy. Clin Exp Dermatol 2013; 39:262-3. [PMID: 23763600 DOI: 10.1111/ced.12180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2013] [Indexed: 12/24/2022]
Affiliation(s)
- M Tokunaga
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Iwata S, Saito K, Tokunaga M, Tanaka Y. Persistent memory B cell down-regulation after 6-year remission induced by rituximab therapy in patients with systemic lupus erythematosus. Lupus 2013; 22:538-540. [DOI: 10.1177/0961203313477899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
- S Iwata
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - K Saito
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - M Tokunaga
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - Y Tanaka
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
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Egi H, Hattori M, Tokunaga M, Suzuki T, Kawaguchi K, Sawada H, Ohdan H. Face, Content and Concurrent Validity of the Mimic® dV-Trainer for Robot-Assisted Endoscopic Surgery: A Prospective Study. Eur Surg Res 2013; 50:292-300. [DOI: 10.1159/000353435] [Citation(s) in RCA: 9] [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: 01/22/2013] [Accepted: 06/03/2013] [Indexed: 11/19/2022]
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Terashima M, Kusuhara M, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Fujimori T, Yamamoto H, Kami K, Ohashi Y. 474. Metabolomic Discrimination of Intestinal- and Diffuse-type Gastric Cancer Tissues Using Capillary Electrophoresis Time-of-flight Mass Spectrometry. Eur J Surg Oncol 2012. [DOI: 10.1016/j.ejso.2012.06.423] [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: 10/27/2022] Open
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Egi H, Okajima M, Hinoi T, Takakura Y, Kawaguchi Y, Shimomura M, Tokunaga M, Adachi T, Hattori M, Urushihara T, Itamoto T, Ohdan H. Single-incision laparoscopic colectomy using the Gelport system for early colon cancer. Scand J Surg 2012; 101:16-20. [PMID: 22414463 DOI: 10.1177/145749691210100104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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]
Abstract
BACKGROUND Laparoscopic surgery has spread quickly during the past twenty years, and has become one of the important treatments in the field of colorectal surgery. Recently, natural orifice transluminal endoscopic surgery (NOTES) has been studied as the next generation of minimally-invasive surgery, but the feasibility and safety of the NOTES method have not been evaluated. In such a situation, single-incision laparoscopic surgery has attracted interest from surgeons worldwide. However, single-incision laparoscopic colorectal surgery has not yet been standardized. METHODS From February 2010, single-incision laparoscopic colectomy was performed for 7 patients presenting with early colon cancer. All procedures were performed by two experts with the License of Endoscopic Surgical Skill Qualification System (ESSQS) of Japan Society for Endoscopic Surgery (JSES) in the field of colorectal Surgery. RESULTS We used the Gelport system (Applied Medical, Rancho Santa Margarita, CA, USA) as the access port and 3 trocars of different sizes (Ethicon, Inc., Cincinnati, OH, USA). Using this technique, we did not experience any difficulties or use any articulated instruments. All of the present 7 patients underwent the single-incision laparoscopic colectomy successfully and had no complications. CONCLUSION Single-incision laparoscopic surgery using the Gelport was performed safely in the present cases. The use of the Gelport as an access port can address the technical difficulty associated with this new technique.
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Affiliation(s)
- H Egi
- Department of Surgery, Hiroshima University Hospital, Hiroshima, Japan.
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Tokunaga M, Hiki N, Fukunaga T, Miki A, Ohyama S, Miyata S, Yamaguchi T. Learning curve of laparoscopy-assisted gastrectomy using a standardized surgical technique and an established educational system. Scand J Surg 2012; 100:86-91. [PMID: 21737383 DOI: 10.1177/145749691110000204] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS The learning curve of a trainee for laparoscopy-assisted gastrectomy in a high volume center, in which an educational system and a standardized laparoscopic procedure are already established, remains unclear. MATERIAL AND METHODS The early surgical outcomes of the patients of two trainees were investigated. Both trainees followed a training program where they performed at least 20 cases being the camera assistant, 20 cases being the first assistant, before performing the surgery as an operator. RESULTS The average operation time, intraoperative bleeding, the number of retrieved lymph nodes, and morbidity rate were 240.2 min, 45.7 ml, 35.4, and 13.0%, respectively. There was no learning curve effect observed except with the operation time of one trainee. CONCLUSIONS In a high volume center with an established educational system, trainees could perform laparoscopy-assisted gastrectomy safely, although there might be a -learning curve effect in operation time and the surgeries took longer operation time in trainee's initial cases.
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Affiliation(s)
- M Tokunaga
- Department of Gastroenterological Surgery, Cancer Institute Hospital, Tokyo, Japan
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Abstract
Dermoid cysts of the ovary are one of the most common ovarian neoplasms, but parasitic dermoid cysts as well as coexistent dermoid cysts are unusual. Almost all reports of coexistent dermoid cysts involve the omentum and ovary, but our case involved the pouch of Douglas and ovary. We managed this case by laparoscopy.
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Affiliation(s)
- M Tokunaga
- Department of Obstetrics and Gynecology, Institute Medical Corporation, Yotsuya Medical Cube, Tokyo, Japan.
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Hiroto T, Muro Y, Yaguchi H, Tokunaga M, Takabatake T, Tamura R. Physical properties of the Cd 6R1/1 approximants. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311084212] [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: 11/10/2022] Open
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Terashima M, Bando E, Tokunaga M, Tanizawa Y, Kawamura T, Kondo J, Kinugasa Y, Kanemoto H, Uesaka K. Efficacy of adjuvant chemotherapy with S-1 in patients with positive peritoneal cytology (CY1) who underwent R1 surgery. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.84] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
84 Background: In recent TNM classification, positive peritoneal cytology (CY1) is regarded as M1 disease and classified into stage IV. However, the prognosis of the CY1 patients underwent R1 surgery (microscopic residual tumor) is considered to be relatively better than those underwent R2 surgery (macroscopic residual tumor). Adjuvant chemotherapy with S-1 had demonstrated significant survival benefit in stage II and III gastric cancer in Japan. However, the efficacy of adjuvant S-1 in patients with relatively more advanced stage had not been investigated. Therefore, we investigated the efficacy of adjuvant chemotherapy with S-1 in CY1 patients underwent R1 surgery. Methods: Among the 2,202 patients with gastric cancer treated at our department between September 2002 and July 2009, a total of 105 patients with CY1 and underwent R1 surgery were included in this study. Clinocopathological features and survival were retrospectively analyzed using prospectively registered data base system. Results: There were 64 male and 41 female patients. The median age was 61 years old. Eighty-five patients had T4a or T4b tumor and 96 patients had lymph node metastasis. Seventy-eight patients had undifferentiated type of tumor. In 83 patients, adjuvant chemotherapy with S-1 had been performed. In the uni-variate analysis, only the extent of lymph node dissection (D2) and the adjuvant chemotherapy with S-1 demonstrated significant survival benefit. In multi-variable analysis using Cox proportional hazarded model, N-factor, extent of lymph node dissection (D2 vs D1), and adjuvant chemotherapy with S-1 were selected as independent prognostic factors. The median survival time and 5-year survival rate in patients underwent R1 resection with D2 lymphadenectomy and adjuvant S-1 treatment were 42 months and 46%, respectively. Conclusions: In patients with CY1 and underwent R1 surgery, adjuvant chemotherapy with S-1 demonstrated significant survival benefit. In patients with positive peritoneal cytology without other non-curative factors, D2 lymph node dissection and adjuvant chemotherapy using S-1 is recommended. No significant financial relationships to disclose.
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Affiliation(s)
| | - E. Bando
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - M. Tokunaga
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - Y. Tanizawa
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - T. Kawamura
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - J. Kondo
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - Y. Kinugasa
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - H. Kanemoto
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - K. Uesaka
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
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Oshima N, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Kondo J, Kinugasa Y, Kanemoto H, Uesaka K, Terashima M. Prognostic value of duodenal invasion length in patients with gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.24] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
24 Background: Duodenal invasion (DI) has been considered as a poor prognostic factor of gastric cancer patients. Not all the patients would be able to undergo curative operation. Neoadjuvant chemotherapy (NAC) may improve the rate of curative operation of these patients. In this study, we investigated whether the length of duodenal invasion preoperative diagnosis can be one of factor to decide indication of NAC. Methods: A total of 118 gastric cancer patients with clinically evident DI, who underwent laparotomy at our center, were enrolled in this study. 42 patients with DI length 20 mm or longer were categorized into long invasion group (LI), 76 patients with DI length shorter than 20 mm were categorized into short invasion group (SI). Clinicopathologic features, rate of direct invasion and lymph nodes involvement, R0 resection, and survival rate were compared between two groups. Results: Resection rate was significantly different between two groups: SI group (85.5%; 65/76), LI group (69.0%; 29/42). Direct invasion to adjacent organs was significantly more frequently observed in LI group (21%; 6/29) than SI group (4 %; 3/65, p = 0.02). In LI group, pancreas invasion was observed in all patients except for one patient. Multivariate analysis to predict the adjacent organ invasion revealed that CT diagnosis (p = 0.005) and invasion length (p = 0.01) were selected as risk factors of direct invasion to adjacent organs. There was no significant difference of nodal involvement between LI group (83%; 24/29) and SI group (83%; 54/65 p = 0.99). The 5-year survival rate was 19% in LI group and 43% in SI group (p = 0.23). The number of patients who underwent R0 resection was more frequently in SI group (75.4%; 49/65) than SI group (69.1%; 16/29). The factors of R1 or R2 resection were metastasis of peritoneum or direct invasion to adjacent organs. Conclusions: In patients with long duodenal invasion, direct invasion to the pancreas was more frequently observed, and resulted in low curative resection rate and poor survival. Preoperative chemotherapy may improve the curative resection rate and survival in these patients. Prospective study is warranted to evaluate the efficacy of NAC for these patients. No significant financial relationships to disclose.
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Affiliation(s)
- N. Oshima
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - M. Tokunaga
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - Y. Tanizawa
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - E. Bando
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - T. Kawamura
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - J. Kondo
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - Y. Kinugasa
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - H. Kanemoto
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
| | - K. Uesaka
- Shizuoka Cancer Center, Nagaizumi-Cho, Japan
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Matsuda M, Azuma M, Tokunaga M, Shimakawa Y, Kumada N. Disordered ground state and magnetic field-induced long-range order in an S=3/2 antiferromagnetic honeycomb lattice compound Bi3Mn4O12(NO3). Phys Rev Lett 2010; 105:187201. [PMID: 21231130 DOI: 10.1103/physrevlett.105.187201] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Indexed: 05/30/2023]
Abstract
Bi3Mn4O12(NO3), in which the Mn4+ ions carry S=3/2, is the first honeycomb lattice system that shows no long-range magnetic order. Using neutron scattering, we have determined that short-range antiferromagnetic correlations develop at low temperatures. Applied magnetic fields induce a magnetic transition, in which the short-range order abruptly expands into a long-range order.
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Affiliation(s)
- M Matsuda
- Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
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Shibahara H, Koriyama J, Tokunaga M, Shiraishi Y, Hirano Y, Okazaki H, Minota S, Suzuki M. Production of sperm immobilizing antibodies is not related with systemic autoimmune diseases in women. J Reprod Immunol 2010. [DOI: 10.1016/j.jri.2010.06.151] [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: 12/01/2022]
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Katakura I, Tokunaga M, Matsuo A, Kawaguchi K, Kindo K, Hitomi M, Akahoshi D, Kuwahara H. Development of high-speed polarizing imaging system for operation in high pulsed magnetic field. Rev Sci Instrum 2010; 81:043701. [PMID: 20441339 DOI: 10.1063/1.3359954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A high-speed polarizing microscope system combined with a 37 T pulse magnet has been developed. This system was applied to successfully visualize the field-induced collapse of charge-orbital ordering in a layered manganite La(1/2)Sr(3/2)MnO(4). Quantitative analyses of the obtained polarizing microscope images provided clear evidence of this transition in contrast to rather moderate changes in magnetization and magnetoresistance. The ability of this system to carry out quantitative analysis was further tested through the observation of Faraday rotation in a Tb(3)Ga(5)O(12) crystal. The Verdet constant determined from the polarizing images is in reasonable agreement with that in literature. Local intensity analyses of the images indicate that we can investigate magneto-optical signals within an accuracy of 0.85% in an area of 9.6 x 9.6 microm(2).
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Affiliation(s)
- I Katakura
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
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Senthilkumar K, Tokunaga M, Okamoto H, Senthilkumar O, Lin J, Urban B, Neogi A, Fujita Y. Multiphonon scattering and non-radiative decay in ZnO nanoparticles. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pssc.200983203] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Tokunaga M, Yamasaki Y, Onose Y, Mochizuki M, Furukawa N, Tokura Y. Novel multiferroic state of Eu1-xYxMnO3 in high magnetic fields. Phys Rev Lett 2009; 103:187202. [PMID: 19905827 DOI: 10.1103/physrevlett.103.187202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2008] [Indexed: 05/28/2023]
Abstract
Magnetic and dielectric properties of Eu1-xYxMnO3 (x=0 and 0.4) are studied in pulsed magnetic fields up to 55 T. For x=0, application of magnetic fields higher than 20 T along the b axis causes magnetic transitions accompanied by generation of electric polarization (P) along the a axis. Similar first-order transitions are also observed in crystals of x=0.4, in which the ground state at zero magnetic field is already a ferroelectric P parallel a phase of different origin. Realistic model calculation indicates the presence of a novel multiferroic state induced by the spin exchange striction mechanism in high magnetic fields as an essential nature of the frustrated Mn spin system in this class of manganites.
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Affiliation(s)
- M Tokunaga
- The Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba 277-8581, Japan.
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49
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O'Farrell ECT, Tompsett DA, Sebastian SE, Harrison N, Capan C, Balicas L, Kuga K, Matsuo A, Kindo K, Tokunaga M, Nakatsuji S, Csányi G, Fisk Z, Sutherland ML. Role of f electrons in the Fermi surface of the heavy fermion superconductor beta-YbAlB4. Phys Rev Lett 2009; 102:216402. [PMID: 19519118 DOI: 10.1103/physrevlett.102.216402] [Citation(s) in RCA: 2] [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] [Received: 11/28/2008] [Indexed: 05/27/2023]
Abstract
We present a detailed quantum oscillation study of the Fermi surface of the recently discovered Yb-based heavy fermion superconductor beta-YbAlB4. We compare the data, obtained at fields from 10 to 45 T, to band structure calculations performed using the local density approximation. Analysis of the data suggests that f holes participate in the Fermi surface up to the highest magnetic fields studied. We comment on the significance of these findings for the unconventional superconducting properties of this material.
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Affiliation(s)
- E C T O'Farrell
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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Tokunaga M, Hiki N, Fukunaga T, Ogura T, Miyata S, Yamaguchi T. Effect of individual fat areas on early surgical outcomes after open gastrectomy for gastric cancer. Br J Surg 2009; 96:496-500. [PMID: 19358176 DOI: 10.1002/bjs.6586] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Obesity is generally considered a risk factor for postoperative morbidity following open gastrectomy. Body mass index (BMI) is widely accepted as an indicator of obesity, but does not necessarily reflect the distribution of fat. It is unclear how different types of fat may affect the operative procedure and outcome. METHODS The relationship between fat area (total, visceral and subcutaneous fat, and BMI) and early surgical outcomes (bleeding, operating time, morbidity, hospital death and hospital stay) was investigated in 135 patients who had a curative gastrectomy at the Cancer Institute Hospital, Tokyo, in 2006. RESULTS Postoperative intra-abdominal infection, which occurred in 13 patients (9.6 per cent), correlated strongly with visceral (P = 0.023) and total (P = 0.037) fat area. Visceral fat area also correlated with hospital death (P = 0.041) and a longer hospital stay (P = 0.001). Subcutaneous fat area and BMI did not correlate with these early surgical outcomes. CONCLUSION Patients with a high visceral fat area are more likely to develop an intra-abdominal infection after gastrectomy. Assessment of fat area, in particular visceral fat area, should alert surgeons to increased postoperative risks.
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Affiliation(s)
- M Tokunaga
- Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
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