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Tsukada K, Nishio SY, Takumi Y, Usami SI. Comparison of vestibular function in hereditary hearing loss patients with GJB2, CDH23, and SLC26A4 variants. Sci Rep 2024; 14:10596. [PMID: 38720048 PMCID: PMC11078969 DOI: 10.1038/s41598-024-61442-3] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 05/06/2024] [Indexed: 05/12/2024] Open
Abstract
To investigate the association between hereditary hearing loss and vestibular function, we compared vestibular function and symptoms among patients with GJB2, SLC26A4, and CDH23 variants. Thirty-nine patients with sensory neural hearing loss (11 males and 28 females) with biallelic pathogenic variants in either GJB2, SLC26A4, or CDH23 were included in this study (13 GJB2, 15 SLC26A4, and 11 CDH23). The patients were examined using caloric testing and cervical and ocular vestibular-evoked myogenic potentials (cVEMP and oVEMP). We also compared vestibular function and symptoms between patients with these gene variants and 78 normal-hearing ears without vestibular symptoms as controls. The frequency of semicircular canal hypofunction in caloric testing was higher in patients with SLC26A4 variants (47%) than in those with GJB2 (0%) and CDH23 variants (27%). According to the cVEMP results, 69% of patients with GJB2 variants had saccular hypofunction, a significantly higher proportion than in those carrying other variants (SLC26A4, 20%; CDH23, 18%). In oVEMP, which reflects utricular function, no difference was observed in the frequency of hypofunction among the three genes (GJB2, 15%; SLC26A4, 40%; and CDH23, 36%). Hence, discernable trends indicate vestibular dysfunction associated with each gene.
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Affiliation(s)
- Keita Tsukada
- Department of Otorhinolaryngology Head and Neck Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan.
| | - Shin-Ya Nishio
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Yutaka Takumi
- Department of Otorhinolaryngology Head and Neck Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Shin-Ichi Usami
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
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Tsukada K, Abe Y, Enokizono A, Goke T, Hara M, Honda Y, Hori T, Ichikawa S, Ito Y, Kurita K, Legris C, Maehara Y, Ohnishi T, Ogawara R, Suda T, Tamae T, Wakasugi M, Watanabe M, Wauke H. First Observation of Electron Scattering from Online-Produced Radioactive Target. Phys Rev Lett 2023; 131:092502. [PMID: 37721815 DOI: 10.1103/physrevlett.131.092502] [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: 03/07/2023] [Accepted: 06/21/2023] [Indexed: 09/20/2023]
Abstract
We successfully performed electron scattering off unstable nuclei which were produced online from the photofission of uranium. The target ^{137}Cs ions were trapped with a new target-forming technique that makes a high-density stationary target from a small number of ions by confining them in an electron storage ring. After developments of target generation and transportation systems and the beam stacking method to increase the ion beam intensity up to approximately 2×10^{7} ions per pulse beam, an average luminosity of 0.9×10^{26} cm^{-2} s^{-1} was achieved for ^{137}Cs. The obtained angular distribution of elastically scattered electrons is consistent with a calculation. This success marks the realization of the anticipated femtoscope which clarifies the structures of exotic and short-lived unstable nuclei.
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Affiliation(s)
- K Tsukada
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - Y Abe
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - A Enokizono
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Goke
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Hara
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - Y Honda
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Hori
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - S Ichikawa
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - Y Ito
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Kurita
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - C Legris
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Maehara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Ohnishi
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - R Ogawara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - T Suda
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Tamae
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Wakasugi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - M Watanabe
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - H Wauke
- Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
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Yakushev A, Lens L, Düllmann CE, Khuyagbaatar J, Jäger E, Krier J, Runke J, Albers HM, Asai M, Block M, Despotopulos J, Di Nitto A, Eberhardt K, Forsberg U, Golubev P, Götz M, Götz S, Haba H, Harkness-Brennan L, Herzberg RD, Heßberger FP, Hinde D, Hübner A, Judson D, Kindler B, Komori Y, Konki J, Kratz J, Kurz N, Laatiaoui M, Lahiri S, Lommel B, Maiti M, Mistry AK, Mokry C, Moody KJ, Nagame Y, Omtvedt JP, Papadakis P, Pershina V, Rudolph D, Samiento L, Sato T, Schädel M, Scharrer P, Schausten B, Shaughnessy DA, Steiner J, Thörle-Pospiech P, Toyoshima A, Trautmann N, Tsukada K, Uusitalo J, Voss KO, Ward A, Wegrzecki M, Wiehl N, Williams E, Yakusheva V. On the adsorption and reactivity of element 114, flerovium. Front Chem 2022; 10:976635. [PMID: 36092655 PMCID: PMC9453156 DOI: 10.3389/fchem.2022.976635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 07/19/2022] [Indexed: 12/01/2022] Open
Abstract
Flerovium (Fl, element 114) is the heaviest element chemically studied so far. To date, its interaction with gold was investigated in two gas-solid chromatography experiments, which reported two different types of interaction, however, each based on the level of a few registered atoms only. Whereas noble-gas-like properties were suggested from the first experiment, the second one pointed at a volatile-metal-like character. Here, we present further experimental data on adsorption studies of Fl on silicon oxide and gold surfaces, accounting for the inhomogeneous nature of the surface, as it was used in the experiment and analyzed as part of the reported studies. We confirm that Fl is highly volatile and the least reactive member of group 14. Our experimental observations suggest that Fl exhibits lower reactivity towards Au than the volatile metal Hg, but higher reactivity than the noble gas Rn.
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Affiliation(s)
- A. Yakushev
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- *Correspondence: A. Yakushev,
| | - L. Lens
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Ch. E. Düllmann
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - J. Khuyagbaatar
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - E. Jäger
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - J. Krier
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - J. Runke
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - H. M. Albers
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - M. Asai
- Japan Atomic Energy Agency, Tokai, Japan
| | - M. Block
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - J. Despotopulos
- Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - A. Di Nitto
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - K. Eberhardt
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | | | | | - M. Götz
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - S. Götz
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | | | | | | | - F. P. Heßberger
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - D. Hinde
- Australian National University, Canberra, ACT, Australia
| | - A. Hübner
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - D. Judson
- University of Liverpool, Liverpool, United Kingdom
| | - B. Kindler
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | | | - J. Konki
- University of Jyväskylä, Jyväskylä, Finland
| | - J.V. Kratz
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - N. Kurz
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - M. Laatiaoui
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - S. Lahiri
- Saha Institute of Nuclear Physics, Kolkata, India
| | - B. Lommel
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - M. Maiti
- Indian Institute of Technology Roorkee, Roorkee, India
| | - A. K. Mistry
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - Ch. Mokry
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - K. J. Moody
- Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Y. Nagame
- Japan Atomic Energy Agency, Tokai, Japan
| | | | - P. Papadakis
- University of Liverpool, Liverpool, United Kingdom
| | - V. Pershina
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | | | | | - T.K. Sato
- Japan Atomic Energy Agency, Tokai, Japan
| | - M. Schädel
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - P. Scharrer
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - B. Schausten
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - D. A. Shaughnessy
- Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - J. Steiner
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - P. Thörle-Pospiech
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | | | - N. Trautmann
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - K. Tsukada
- Japan Atomic Energy Agency, Tokai, Japan
| | | | - K.-O. Voss
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - A. Ward
- University of Liverpool, Liverpool, United Kingdom
| | - M. Wegrzecki
- Łukasiewicz Research Network—Institute of Electron Technology, Warsaw, Poland
| | - N. Wiehl
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - E. Williams
- Australian National University, Canberra, ACT, Australia
| | - V. Yakusheva
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
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Iwasa YI, Yokota Y, Kitoh R, Mori K, Tsukada K, Sekiguchi N, Fukushima T, Kobayashi T, Kanda S, Takumi Y, Koizumi T. Factors Affecting Nivolumab Therapy Outcome in Patients with Head and Neck Cancer: A Single-Center Analysis. Oncology 2022; 100:203-211. [PMID: 35042219 DOI: 10.1159/000522035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 12/11/2021] [Indexed: 11/19/2022]
Abstract
Background Nivolumab, a programmed death-1 antibody, is an immune checkpoint inhibitor approved in Japan in March 2017 for the treatment of recurrent or metastatic head and neck cancers (RM-HNCs) after platinum drug administration. This study aimed to evaluate the effectiveness and safety of nivolumab and to determine the prognostic factors affecting the treatment outcome, in a real-world setting in Japanese RM-HNCs. Methods Forty-six patients with RM-HNCs treated with nivolumab between April 2017 and April 2021 at Shinshu University Hospital were retrospectively assessed in this cohort study. Results The overall response rate was 17.4%, and the disease control rate was 41.3%. The median first and second progression-free survival (PFS1 and PFS2) were 2.6 and 10.3 months, respectively. The median overall survival was 14.8 months. Multivariate analysis showed that performance status (PS) (p = 0.003) and a decrease in neutrophil-lymphocyte ratio (NLR) (p = 0.02) were significantly associated with a better overall survival, and a decrease in NLR (p = 0.035) was associated with a better PFS2. Conclusions This study is the first report of PFS2 in RM-HNCs treated with nivolumab; the long PFS2 may contribute to prolonged overall survival. We propose that the PS and a decrease in NLR could be useful clinical prognostic markers of nivolumab therapy, which can easily be evaluated in the clinical setting.
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Affiliation(s)
- Yoh-Ichiro Iwasa
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoh Yokota
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Ryosuke Kitoh
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kentaro Mori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Nodoka Sekiguchi
- Department of Comprehensive Cancer Center, Shinshu University School of Medicine, Matsumoto, Japan
| | - Toshirou Fukushima
- Department of Comprehensive Cancer Center, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takashi Kobayashi
- Department of Comprehensive Cancer Center, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shintaro Kanda
- Department of Comprehensive Cancer Center, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yutaka Takumi
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Tomonobu Koizumi
- Department of Comprehensive Cancer Center, Shinshu University School of Medicine, Matsumoto, Japan
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Kurozumi M, Takumi Y, Uehara T, Suzuki T, Ohya A, Shinagawa J, Miyagawa J, Tsukahara Y, Yamada A, Tsukada K, Suzuki H, Fujinaga Y. Preoperative Arterial Embolization to Avoid Intraoperative Bleeding during Endoscopic Sinus Surgery for Organized Hematoma of the Maxillary Sinus: A Case Series and Literature Review. Interventional Radiology 2021; 6:102-107. [PMID: 35912279 PMCID: PMC9327429 DOI: 10.22575/interventionalradiology.2021-0010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 07/06/2021] [Indexed: 11/09/2022]
Abstract
Purpose: This study aimed to evaluate the safety and efficacy of preoperative arterial embolization of organized hematoma of the maxillary sinus. Material and Methods: Seven patients who were pathologically diagnosed with an organized hematoma of the maxillary sinus and who underwent endoscopic sinus surgery following preoperative arterial embolization for the same from July 2013 to April 2020 at our hospital were included. A literature review of the PubMed database was performed to identify 13 cases on organized hematomas of the maxillary sinuses. The embolization and nonembolization groups comprised patients who underwent preoperative embolization (n = 10, seven from this study and three from literature) and those who did not undergo preoperative embolization (n = 10, from literature), respectively. Outcomes of embolization including embolization-related complications and postoperative bleeding were assessed, and volumes of intraoperative blood loss and duration of surgery were compared between the groups. Results: No preoperative embolization-related complications were observed in our cases. The volume of surgical blood loss in the seven cases varied from 0 to 100 mL with a median of 30 mL, and the duration of surgery ranged from 45 to 166 minutes with a median of 112 minutes. The volume of blood loss was significantly lower for the embolization group than that for the nonembolization group (p = 0.0031). There was no statistically significant difference regarding duration of surgery between the groups (p > 0.10). Conclusions: Preoperative embolization of an organized hematoma of the maxillary sinus is a safe and effective method that helps prevent serious intraoperative hemorrhage.
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Affiliation(s)
| | - Yutaka Takumi
- Department of Otorhinolaryngology, Shinshu University School of Medicine
| | - Takeshi Uehara
- Department of Laboratory Medicine, Shinshu University School of Medicine
| | - Takeshi Suzuki
- Department of Radiology, Shinshu University School of Medicine
| | - Ayumi Ohya
- Department of Radiology, Shinshu University School of Medicine
| | - Jun Shinagawa
- Department of Otorhinolaryngology, Shinshu University School of Medicine
| | - Jun Miyagawa
- Radiology Division of Shinshu University Hospital
| | | | - Akira Yamada
- Department of Radiology, Shinshu University School of Medicine
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine
| | - Hiroaki Suzuki
- Department of Otorhinolaryngology, Shinshu University School of Medicine
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Tsukada K, Usami SI. Vestibular nerve deficiency and vestibular function in children with unilateral hearing loss caused by cochlear nerve deficiency. Acta Otolaryngol 2021; 141:835-840. [PMID: 34406114 DOI: 10.1080/00016489.2021.1959637] [Citation(s) in RCA: 1] [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] [Indexed: 10/20/2022]
Abstract
BACKGROUND High-resolution MR imaging enables the visualization of individual nerves in the internal auditory canal (IAC). Cochlear nerve deficiency (CND) is recognized as one of the major causes of sensory neural hearing loss (SNHL), especially in cases of unilateral hearing loss in childhood. Some patients with CND are thought to have accompanying vestibular nerve deficiency (VND). However, there have been few reports focusing on VND and vestibular function in these children. AIMS The aim of this study was to evaluate the frequency of VND and vestibular dysfunction in children with unilateral SNHL caused by CND. MATERIAL AND METHODS Thirty-eight children with unilateral SNHL, who were diagnosed with CND by 3 T-MRI, were evaluated for VND and underwent caloric testing and cervical vestibular evoked potential (cVEMP). RESULTS Fourteen of 38 patients (37%) had VND, and eleven (29%) of the patients [ten of the patients (71%) with VND] had at least one vestibular dysfunction. The patients with VND had significantly worse hearing and an IAC of smaller diameter than did patients without VND. CONCLUSIONS AND SIGNIFICANCE We should pay attention to VND as well as vestibular dysfunction in hearing loss patients with CND.
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Affiliation(s)
- Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto City, Japan
| | - Shin-ichi Usami
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto City, Japan
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Abstract
Background: The development of less traumatic surgical techniques, such as the round window approach (RWA), as well as the use of flexible electrodes and post-operative steroid administration have enabled the preservation of residual hearing after cochlear implantation (CI) surgery. However, consideration must still be given to the complications that can accompany CI. One such potential complication is the impairment of vestibular function with resulting vertigo symptoms. The aim of our current study was to examine the changes in vestibular function after implantation in patients who received CI using less traumatic surgery, particularly the RWA technique. Methods: Sixty-six patients who received CI in our center were examined by caloric testing, cervical vestibular evoked myogenic potential (cVEMP) and ocular VEMP (oVEMP) before or after implantation, or both, to obtain data on semicircular canal, saccular and utricular function, respectively. Less traumatic CI surgery was performed by the use of the RWA and insertion of flexible electrodes such as MED-EL FLEX soft, FLEX 28, and FLEX 24 (Innsbruck, Austria). Results: Caloric response and the asymmetry ratio of cVEMP and oVEMP were examined before and after implantation using less traumatic surgical techniques. Compared with before implantation, 93.9, 82.4, and 92.5% of the patients showed preserved vestibular function after implantation based on caloric testing, cVEMP and oVEMP results, respectively. We also examined the results for vestibular function by a comparison of the 66 patients using the RWA and flexible electrodes, and 17 patients who underwent cochleostomy and insertion of conventional or hard electrodes. We measured responses using caloric testing, cVEMP and oVEMP in patients after CI. There were no differences in the frequencies of abnormal caloric and oVEMP results in the implanted ears between the RWA and cochleostomy. On the other hand, the frequency of abnormal cVEMP responses in the implanted ears in the patients who received implantation by cochleostomy was significantly higher than that in the patients undergoing surgery using the RWA. Conclusion: Patients receiving CI using less traumatic surgical techniques such as RWA and flexible electrodes have reduced risk of damage to vestibular function.
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Affiliation(s)
- Keita Tsukada
- Department of Otolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ichi Usami
- Department of Otolaryngology, Shinshu University School of Medicine, Matsumoto, Japan.,Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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Ikebe Y, Oshima M, Bamba S, Asai M, Tsukada K, Sato TK, Toyoshima A, Bi C, Seto H, Amano H, Kumada H, Morimoto T. Study of charged particle activation analysis (II): Determination of boron concentration in human blood samples. Appl Radiat Isot 2020; 164:109106. [PMID: 32819495 DOI: 10.1016/j.apradiso.2020.109106] [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: 04/10/2017] [Revised: 07/05/2019] [Accepted: 02/24/2020] [Indexed: 10/24/2022]
Abstract
Boron Neutron Capture Therapy (BNCT) is a radiotherapy for the treatment of intractable cancer. In BNCT precise determination of 10B concentration in whole blood sample before neutron irradiation of the patient, as well as accurate neutron dosimetry, is crucial for control of the neutron irradiation time. For this purpose ICP-AES and neutron induced prompt γ-ray analysis are generally used. In Ibaraki Neutron Medical Research Center (iNMRC), an intense proton beam will be accelerated up to 8 MeV, which can also be used for Charged Particle Activation Analysis (CPAA). Thus, in this study, we apply the CPAA utilizing the proton beam to non-destructive and accurate determination of 10B concentration in whole blood sample. A CPAA experiment is performed by utilizing an 8 MeV proton beam from the tandem accelerator of Nuclear Science Research Institute in Japan Atomic Energy Agency. The 478 keV γ-ray of 7Be produced by the 10B(p, α)7Be reaction is used to quantify the 10B in human blood. The 478 keV γ-ray intensity is normalized by the intensities of the 847 keV and 1238 keV γ-rays of 56Co originating from Fe in blood. The normalization methods were found to be linear in the range of 3.27 μg 10B/g to 322 μg 10B/g with correlation coefficients of better than 0.9999.
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Affiliation(s)
- Y Ikebe
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan.
| | - M Oshima
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan
| | - S Bamba
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan
| | - M Asai
- Japan Atomic Energy Agency, Shirakata 2-4, Tokai, Naka, Ibaraki, 319-1195, Japan
| | - K Tsukada
- Japan Atomic Energy Agency, Shirakata 2-4, Tokai, Naka, Ibaraki, 319-1195, Japan
| | - T K Sato
- Japan Atomic Energy Agency, Shirakata 2-4, Tokai, Naka, Ibaraki, 319-1195, Japan
| | - A Toyoshima
- Japan Atomic Energy Agency, Shirakata 2-4, Tokai, Naka, Ibaraki, 319-1195, Japan
| | - C Bi
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan
| | - H Seto
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan
| | - H Amano
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan
| | - H Kumada
- University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, 305-8575, Japan
| | - T Morimoto
- Japan Chemical Analysis Center, Sanno 295-3, Inage, Chiba, 263-0002, Japan
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Nishimaki F, Gibo T, Tsukada K, Noguchi T, Fukushima T, Kobayashi T, Sekiguchi N, Ozawa T, Koizumi T. A Rare Distant Metastasis of Papillary Cystadenocarcinoma Arising from Maxillary Gingiva. Case Rep Oncol 2020; 13:683-688. [PMID: 32774257 PMCID: PMC7383184 DOI: 10.1159/000507956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/16/2020] [Accepted: 04/16/2020] [Indexed: 11/19/2022] Open
Abstract
Papillary cystadenocarcinoma is an uncommon disease with low-grade histological and clinical features. Although the tumor has the potential to produce regional lymph node metastasis, there have been no reports of cases with distant metastasis. We describe a case of papillary cystadenocarcinoma arising from the maxilla that developed pulmonary metastasis 3 years after radical surgery of the primary tumor and regional lymph node. The histological findings were confirmed on resected specimens of the pulmonary nodule and a pathological diagnosis of a metastatic lesion derived from papillary cystadenocarcinoma was made. To our knowledge, this is the first report of the development of pulmonary metastasis in a patient with papillary cystadenocarcinoma. The present case suggests that papillary cystadenocarcinoma has the potential to produce lung metastasis in the clinical course. Based on our experience, we emphasize that long-term follow-up and/or careful examination are necessary in patients with cystadenocarcinoma, especially in patients with lymph node metastasis during the initial surgical therapy.
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Affiliation(s)
- Fumihiro Nishimaki
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan.,Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takahiko Gibo
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan.,Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takuro Noguchi
- Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Toshirou Fukushima
- Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takashi Kobayashi
- Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Nodoka Sekiguchi
- Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takesumi Ozawa
- Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
| | - Tomonobu Koizumi
- Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan
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10
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Motoo I, Ando T, Ueda A, Ogawa K, Kajiura S, Hirano K, Okumura T, Tsukada K, Hara T, Suzuki N, Nakada N, Takatori S, Horikawa N, Fujii T, Yasuda I. P-178 Prognostic impact of immune-related adverse events with nivolumab or pembrolizumab monotherapy in patients with advanced gastric cancer: A multicenter retrospective analysis. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.260] [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] Open
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11
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Tsukada K, Usami SI. Detailed MR imaging assessment of endolymphatic hydrops in patients with SLC26A4 mutations. Auris Nasus Larynx 2020; 47:958-964. [PMID: 32536503 DOI: 10.1016/j.anl.2020.05.018] [Citation(s) in RCA: 1] [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: 03/16/2020] [Revised: 05/02/2020] [Accepted: 05/27/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Mutations in SLC26A4 represent the second most common mutations in deafness patients. The majority of patients with SLC26A4 mutations have a large vestibular aqueduct (LVA). Recently, some reports showed the presence of endolymphatic hydrops (ELH) in patients with LVA on the basis of high-resolution enhanced 3T-MRI. However, detailed evaluation has not been performed. We provide the first report on ELH in LVA patients with biallelic SLC26A4 mutations. In this study, we focused on 1) the findings of ELH in LVA patients with biallelic SLC26A4 mutations, and 2) the findings of the endolymphatic duct (ED) and endolymphatic sac (ES) by using two different gadodimide (Gd) enhancement methods. SUBJECTS AND METHODS Five patients with SLC26A4 mutations underwent enhanced 3T-MRI using the intratympanic (IT) or intravenous (IV) injection of Gd for the diagnosis ELH. RESULTS All of the patients had ELH in at least one ear. ELH was identified in the vestibule (8/10 ears) as well as in the cochlea (7/10 ears). With regard to the ED and ES, all ears for which MRI was performed with an IT injection of Gd had black areas in the ES or VA or both; however, all of the ears receiving an IV injection had no black areas and were well enhanced. CONCLUSIONS A majority of the patients had severe ELH in the cochleo-vestibular endolymph, with two different patterns observed in the MRI findings of the ED and ES.
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Affiliation(s)
- Keita Tsukada
- Department of Otolaryngology, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto City, 390-8621, Japan
| | - Shin-Ichi Usami
- Department of Otolaryngology, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto City, 390-8621, Japan.
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12
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Fujioka M, Akiyama T, Hosoya M, Kikuchi K, Fujiki Y, Saito Y, Yoshihama K, Ozawa H, Tsukada K, Nishio SY, Usami SI, Matsunaga T, Hasegawa T, Sato Y, Ogawa K. A phase I/IIa double blind single institute trial of low dose sirolimus for Pendred syndrome/DFNB4. Medicine (Baltimore) 2020; 99:e19763. [PMID: 32384426 PMCID: PMC7220392 DOI: 10.1097/md.0000000000019763] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Pendred syndrome (PDS)/DFNB 4 is a disorder with fluctuating and progressive hearing loss, vertigo, and thyroid goiter. We identified pathophysiology of a neurodegenerative disorder in PDS patient derived cochlear cells that were induced via induced pluripotent stem cells and found sirolimus, an mTOR inhibitor, as an inhibitor of cell death with the minimum effective concentration less than 1/10 of the approved dose for other diseases. Given that there is no rational standard therapy for PDS, we planned a study to examine effects of low dose oral administration of sirolimus for the fluctuating and progressive hearing loss, and the balance disorder of PDS by daily monitor of their audio-vestibular symptoms. METHODS AND ANALYSIS This is a phase I/IIa double blind parallel-group single institute trial in patient with PDS/DFNB4. Sixteen of outpatients with fluctuating hearing diagnosed as PDS in SLC26A4 genetic testing aged in between 7 and 50 years old at the time of consent are given either placebo or sirolimus tablet (NPC-12T). In NPC-12T placebo arm, placebo will be given for 36 weeks; in active substance arm, placebo will be given for 12 weeks and the NPC-12T for 24 weeks. Primary endpoints are safety and tolerability. The number of occurrences and types of adverse events and of side effects will be sorted by clinical symptoms and by abnormal change of clinical test results. A 2-sided 95% confidence interval of the incidence rate by respective dosing arms will be calculated using the Clopper-Pearson method. Clinical effects on audio-vestibular tests performed daily and precise physiological test at each visit will also be examined as secondary and expiratory endpoints. TRIAL REGISTRATION NUMBER JMA-IIA00361; Pre-results.
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Affiliation(s)
- Masato Fujioka
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Takumi Akiyama
- Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Makoto Hosoya
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kayoko Kikuchi
- Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Yuto Fujiki
- Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Yasuko Saito
- Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Keisuke Yoshihama
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hiroyuki Ozawa
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Nagano, Japan
| | - Shin-ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Nagano, Japan
| | - Shin-ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Nagano, Japan
| | - Tatsuo Matsunaga
- Department of Otolaryngology, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Tomonobu Hasegawa
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Yasunori Sato
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan
| | - Kaoru Ogawa
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
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13
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Ogiwara T, Miyaoka Y, Nakamura T, Tsukada K, Yamazaki D, Ito K, Hanaoka Y, Koyama JI, Horiuchi T, Hongo K. Endoscopic Endonasal Odontoidectomy in the Hybrid Operating Room. World Neurosurg 2019; 131:137-140. [DOI: 10.1016/j.wneu.2019.07.197] [Citation(s) in RCA: 5] [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: 05/22/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 11/24/2022]
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14
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Iwasa YI, Tsukada K, Kobayashi M, Kitano T, Mori K, Yoshimura H, Fukuoka H, Usami SI. Bilateral delayed endolymphatic hydrops evaluated by bilateral intratympanic injection of gadodiamide with 3T-MRI. PLoS One 2018; 13:e0206891. [PMID: 30517123 PMCID: PMC6281314 DOI: 10.1371/journal.pone.0206891] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 08/26/2017] [Accepted: 10/22/2018] [Indexed: 12/02/2022] Open
Abstract
The purpose of this study was to assess the diagnostic performance of 3T MRI after intratympanic injection of gadodiamide for delayed endolymphatic hydrops (DEH), and assess the relationship between endolymphatic hydrops (ELH) and vestibular function in patients diagnosed with DEH and confirmed by 3T MRI. Nineteen patients clinically diagnosed with DEH (11 ipsilateral DEH, 8 contralateral DEH) participated in this study. Diluted gadodiamide was administered to the bilateral tympanic cavity by injection through the tympanic membrane. At 24 hours post-injection, the ELH was evaluated by MRI. Patient vestibular functions were evaluated by caloric testing and cVEMP. ELH was observed in all patients (19/19: positive rate 100%). The distribution patterns of ELH varied between the cochlear or vestibular region. Vestibular ELH was observed in the affected ear in all ipsilateral DEH patients. In the contralateral DEH patients, however, there were individual differences in the distribution patterns of ELH. Six patients (1 ipsilateral DEH, 5 contralateral DEH) had bilateral ELH. No obvious relationships were observed between ELH and vestibular function. ELH distribution was complicated, particularly in the contralateral DEH cases. It was difficult to identify the existence of ELH by vestibular functional testing alone; therefore, 3T MRI is thought to be useful for identifying the affected ear. A significant number of cases had “bilateral” DEH, particularly among the contralateral DEH cases, indicating that we should pay careful attention to this pathology when treating DEH.
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Affiliation(s)
- Yoh-ichiro Iwasa
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Masafumi Kobayashi
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Tomohiro Kitano
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kentaro Mori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hidekane Yoshimura
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hisakuni Fukuoka
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
- * E-mail:
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15
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Moteki H, Nishio SY, Miyagawa M, Tsukada K, Noguchi Y, Usami SI. Feasibility of hearing preservation for residual hearing with longer cochlear implant electrodes. Acta Otolaryngol 2018; 138:1080-1085. [PMID: 30702034 DOI: 10.1080/00016489.2018.1508888] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 10/27/2022]
Abstract
BACKGROUND Hearing preservation is thought to be achievable following atraumatic surgery with thin cochlear implant electrodes; therefore, the surgical approach and implant electrode design are crucial considerations. OBJECTIVE To assess the feasibility of hearing preservation with long electrodes for patients meeting the criteria for conventional cochlear implantation. METHODS One hundred and two patients (132 ears) who underwent cochlear implant surgery were analyzed. Inclusion criteria included measurable residual hearing in the low frequency before implantation and not meeting the criteria for electric acoustic stimulation (EAS). RESULTS Of the 18 patients with residual hearing in the low frequency enrolled, 17 subjects (94.4%) retained low frequency hearing. A younger age at surgery tended to contribute to better hearing preservation than that observed in older patients. There was no clear trend regarding the influence of insertion depth angle of the electrode on hearing preservation. CONCLUSION It is possible to achieve hearing preservation in the lower frequency by the use of longer electrodes. This study underscores the importance of atraumatic surgery, even for patients with only limited residual hearing, and longer electrodes should be adopted for EAS.
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Affiliation(s)
- Hideaki Moteki
- aDepartment of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
- bDepartment of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ya Nishio
- aDepartment of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
- bDepartment of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Maiko Miyagawa
- aDepartment of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Keita Tsukada
- aDepartment of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoshihiro Noguchi
- bDepartment of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
- cDepartment of Otolaryngology, International University of Health and Welfare, Narita, Japan
| | - Shin-Ichi Usami
- aDepartment of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
- bDepartment of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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16
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Nishi T, Itahashi K, Berg GPA, Fujioka H, Fukuda N, Fukunishi N, Geissel H, Hayano RS, Hirenzaki S, Ichikawa K, Ikeno N, Inabe N, Itoh S, Iwasaki M, Kameda D, Kawase S, Kubo T, Kusaka K, Matsubara H, Michimasa S, Miki K, Mishima G, Miya H, Nagahiro H, Nakamura M, Noji S, Okochi K, Ota S, Sakamoto N, Suzuki K, Takeda H, Tanaka YK, Todoroki K, Tsukada K, Uesaka T, Watanabe YN, Weick H, Yamakami H, Yoshida K. Spectroscopy of Pionic Atoms in ^{122}Sn(d,^{3}He) Reaction and Angular Dependence of the Formation Cross Sections. Phys Rev Lett 2018; 120:152505. [PMID: 29756883 DOI: 10.1103/physrevlett.120.152505] [Citation(s) in RCA: 1] [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: 08/24/2017] [Revised: 02/07/2018] [Indexed: 06/08/2023]
Abstract
We observed the atomic 1s and 2p states of π^{-} bound to ^{121}Sn nuclei as distinct peak structures in the missing mass spectra of the ^{122}Sn(d,^{3}He) nuclear reaction. A very intense deuteron beam and a spectrometer with a large angular acceptance let us achieve a potential of discovery, which includes the capability of determining the angle-dependent cross sections with high statistics. The 2p state in a Sn nucleus was observed for the first time. The binding energies and widths of the pionic states are determined and found to be consistent with previous experimental results of other Sn isotopes. The spectrum is measured at finite reaction angles for the first time. The formation cross sections at the reaction angles between 0° and 2° are determined. The observed reaction-angle dependence of each state is reproduced by theoretical calculations. However, the quantitative comparison with our high-precision data reveals a significant discrepancy between the measured and calculated formation cross sections of the pionic 1s state.
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Affiliation(s)
- T Nishi
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - K Itahashi
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - G P A Berg
- Department of Physics and the Joint Institute for Nuclear Astrophysics Center for the Evolution of the Elements, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - H Fujioka
- Department of Physics, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502 Kyoto, Japan
| | - N Fukuda
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - N Fukunishi
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - H Geissel
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany
| | - R S Hayano
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - S Hirenzaki
- Department of Physics, Nara Women's University, Kita-Uoya Nishimachi, Nara, 630-8506 Nara, Japan
| | - K Ichikawa
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - N Ikeno
- Department of Life and Environmental Agricultural Sciences, Faculty of Agriculture, Tottori University, 4-101 Koyamacho-Minami, Tottori, 680-8551 Tottori, Japan
| | - N Inabe
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Itoh
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - M Iwasaki
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - D Kameda
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Kawase
- Center for Nuclear Study, The University of Tokyo, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - T Kubo
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - K Kusaka
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - H Matsubara
- Center for Nuclear Study, The University of Tokyo, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Michimasa
- Center for Nuclear Study, The University of Tokyo, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - K Miki
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - G Mishima
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - H Miya
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - H Nagahiro
- Department of Physics, Nara Women's University, Kita-Uoya Nishimachi, Nara, 630-8506 Nara, Japan
| | - M Nakamura
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Noji
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - K Okochi
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - N Sakamoto
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - K Suzuki
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria
| | - H Takeda
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - Y K Tanaka
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - K Todoroki
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - K Tsukada
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - T Uesaka
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - Y N Watanabe
- Department of Physics, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033 Tokyo, Japan
| | - H Weick
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany
| | - H Yamakami
- Department of Physics, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502 Kyoto, Japan
| | - K Yoshida
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
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17
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Hirose K, Nishio K, Tanaka S, Léguillon R, Makii H, Nishinaka I, Orlandi R, Tsukada K, Smallcombe J, Vermeulen MJ, Chiba S, Aritomo Y, Ohtsuki T, Nakano K, Araki S, Watanabe Y, Tatsuzawa R, Takaki N, Tamura N, Goto S, Tsekhanovich I, Andreyev AN. Role of Multichance Fission in the Description of Fission-Fragment Mass Distributions at High Energies. Phys Rev Lett 2017; 119:222501. [PMID: 29286806 DOI: 10.1103/physrevlett.119.222501] [Citation(s) in RCA: 3] [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: 05/19/2017] [Indexed: 06/07/2023]
Abstract
Fission-fragment mass distributions were measured for ^{237-240}U, ^{239-242}Np, and ^{241-244}Pu populated in the excitation-energy range from 10 to 60 MeV by multinucleon transfer channels in the reaction ^{18}O+^{238}U at the Japan Atomic Energy Agency tandem facility. Among them, the data for ^{240}U and ^{240,241,242}Np were observed for the first time. It was found that the mass distributions for all the studied nuclides maintain a double-humped shape up to the highest measured energy in contrast to expectations of predominantly symmetric fission due to the washing out of nuclear shell effects. From a comparison with the dynamical calculation based on the fluctuation-dissipation model, this behavior of the mass distributions was unambiguously attributed to the effect of multichance fission.
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Affiliation(s)
- K Hirose
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - K Nishio
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - S Tanaka
- Faculty of Science and Engineering, Kindai University, Higashi-Osaka 577-8502, Japan
| | - R Léguillon
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - H Makii
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - I Nishinaka
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - R Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - K Tsukada
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - J Smallcombe
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - M J Vermeulen
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
| | - S Chiba
- Laboratory for Advanced Nuclear Energy, Institute for Innovative Research, Tokyo Institute of Technology, 2-12-1-N1-19, Ookayama, Meguro-ku, Tokyo 152-8550 Japan
| | - Y Aritomo
- Faculty of Science and Engineering, Kindai University, Higashi-Osaka 577-8502, Japan
| | - T Ohtsuki
- Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan
| | - K Nakano
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
| | - S Araki
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
| | - Y Watanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
| | - R Tatsuzawa
- Graduate School of Engineering, Tokyo City University, Tokyo 158-8557, Japan
| | - N Takaki
- Graduate School of Engineering, Tokyo City University, Tokyo 158-8557, Japan
| | - N Tamura
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - S Goto
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - I Tsekhanovich
- University of Bordeaux, 351 Cours de la Libration, 33405 Talence Cedex, France
| | - A N Andreyev
- Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai, Ibaraki 319-1195 Japan
- Department of Physics, University of York, York YO10 5DD, United Kingdom
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Tsukada K, Enokizono A, Ohnishi T, Adachi K, Fujita T, Hara M, Hori M, Hori T, Ichikawa S, Kurita K, Matsuda K, Suda T, Tamae T, Togasaki M, Wakasugi M, Watanabe M, Yamada K. First Elastic Electron Scattering from ^{132}Xe at the SCRIT Facility. Phys Rev Lett 2017; 118:262501. [PMID: 28707914 DOI: 10.1103/physrevlett.118.262501] [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] [Received: 03/14/2017] [Indexed: 06/07/2023]
Abstract
The first elastic electron scattering has been successfully performed at the self-confining radioactive-isotope ion target (SCRIT) facility, the world's first electron scattering facility for SCRIT technique achieved high luminosity (over 10^{27} cm^{-2} s^{-1}, sufficient for determining the nuclear shape) with only 10^{8} target ions. While ^{132}Xe used in this time as a target is a stable isotope, the charge density distribution was first extracted from the momentum transfer distributions of the scattered electrons by comparing the results with those calculated by a phase shift calculation.
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Affiliation(s)
- K Tsukada
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - A Enokizono
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Ohnishi
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Adachi
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Fujita
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - M Hara
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - M Hori
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Hori
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Ichikawa
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Kurita
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - K Matsuda
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Suda
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Tamae
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - M Togasaki
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - M Wakasugi
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - M Watanabe
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Yamada
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
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Moteki H, Nishio SY, Miyagawa M, Tsukada K, Iwasaki S, Usami SI. Long-term results of hearing preservation cochlear implant surgery in patients with residual low frequency hearing. Acta Otolaryngol 2017; 137:516-521. [PMID: 27852135 DOI: 10.1080/00016489.2016.1252061] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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: 10/20/2022]
Abstract
CONCLUSION Differences were found between patients with stable hearing and those with progressive hearing loss in the lower frequencies with respect to the rate of progression in the contralateral ear. It is suggested that the electric acoustic stimulation (EAS) can provide improvement in hearing ability over the long-term if residual hearing might be lost to some extent. OBJECTIVE To evaluate the long-term threshold changes in the low frequency hearing of the implanted ear as compared with the non-implanted ear, and the hearing abilities with EAS along with the extent of residual hearing. METHODS Seventeen individuals were enrolled and received the EAS implant with a 24-mm FLEXeas electrode array. Hearing thresholds and speech perception were measured pre- and post-operatively for 1-5 years. Post-operative hearing preservation (HP) rates were calculated using the preservation numerical scale. RESULTS The average linear regression coefficient for the decline in hearing preservation score was -6.9 for the implanted ear and the patients were subsequently categorized into two groups: those with better than average, stable hearing; and those with worse than average, progressive hearing loss. EAS showed better results than electric stimulation alone, in spite of an absence of speech perception with acoustic stimulation.
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Affiliation(s)
- Hideaki Moteki
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Maiko Miyagawa
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Satoshi Iwasaki
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Otolaryngology, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
| | - Shin-ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
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20
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Ido T, Shimizu A, Nishiura M, Kato S, Nakano H, Ohshima S, Yokoyama M, Murakami S, Wakasa A, Nakamura S, Yokota M, Tsukada K, Ogawa H, Inoue T. Development of 6-MeV Heavy Ion Beam Probe on LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10829] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Ido
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Shimizu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Nishiura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Kato
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Nakano
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Ohshima
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department Nuclear Engineering, Kyoto 606-8501, Japan
| | - A. Wakasa
- Kyoto University, Department Nuclear Engineering, Kyoto 606-8501, Japan
| | - S. Nakamura
- Nagoya University, Nogoya, Aichi 464-8601, Japan
| | - M. Yokota
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Tsukada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Ogawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Inoue
- National Institute for Fusion Science, Toki 509-5292, Japan
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Eichler R, Asai M, Brand H, Chiera N, Di Nitto A, Dressler R, Düllmann C, Even J, Fangli F, Goetz M, Haba H, Hartmann W, Jäger E, Kaji D, Kanaya J, Kaneya Y, Khuyagbaatar J, Kindler B, Komori Y, Kraus B, Kratz J, Krier J, Kudou Y, Kurz N, Miyashita S, Morimoto K, Morita K, Murakami M, Nagame Y, Ooe K, Piguet D, Sato N, Sato T, Steiner J, Steinegger P, Sumita T, Takeyama M, Tanaka K, Tomitsuka T, Toyoshima A, Tsukada K, Türler A, Usoltsev I, Wakabayashi Y, Wang Y, Wiehl N, Wittwer Y, Yakushev A, Yamaki S, Yano S, Yamaki S, Qin Z. Complex chemistry with complex compounds. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201613107005] [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] [Indexed: 11/14/2022] Open
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22
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Sekine S, Nagata T, Okumura T, Shibuya K, Hashimoto I, Hojo S, Yoshioka I, Matsui K, Tsukada K. MON-P080: The Usefulness of Nutritional Index Conut for Risk Assessmentand Prognosis after Pancreaticoduodenectomy. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30714-2] [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: 10/21/2022]
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23
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Takae S, Tsukada K, Okamoto N, Sato Y, Kawahara T, Suzuki N. Verification of accuracy & safety for ovarian reserve assessment with optical coherence tomography using mouse ovary. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.014] [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: 10/21/2022]
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24
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Achenbach P, Schulz F, Aulenbacher S, Beričič J, Bleser S, Böhm R, Bosnar D, Correa L, Distler MO, Esser A, Fonvieille H, Friščić I, Fujii Y, Fujita M, Gogami T, Kanda H, Kaneta M, Kegel S, Kohl Y, Kusaka W, Margaryan A, Merkel H, Mihovilovič M, Müller U, Nagao S, Nakamura SN, Pochodzalla J, Lorente AS, Schlimme BS, Schoth M, Sfienti C, Širca S, Steinen M, Takahashi Y, Tang L, Thiel M, Tsukada K, Tyukin A, Weber A. Experimental investigations of the hypernucleus Λ4H. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611307001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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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25
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Tsukada K, Harayama Y. DNA extraction with silica membrane column from teeth left in soil for more than 60 years. Forensic Science International: Genetics Supplement Series 2015. [DOI: 10.1016/j.fsigss.2015.09.054] [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: 10/23/2022]
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26
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Okumura T, Shimada Y, Sakurai T, Hori R, Nagata T, Sakai Y, Tsukada K. Abnormal cell proliferation in the p75NTR-positive basal cell compartment of the esophageal epithelium during squamous carcinogenesis. Dis Esophagus 2015; 28:634-43. [PMID: 24888722 DOI: 10.1111/dote.12245] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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] [Indexed: 12/11/2022]
Abstract
The low affinity neurotrophin receptor p75NTR is known to be expressed in the mitotically quiescent basal layer (BL) of the normal esophageal epithelium. The aim of the present study was to detect oncogenic changes in the p75NTR-positive BL during esophageal squamous carcinogenesis. The normal epithelium (NE), low-grade intraepithelial neoplasia (LGN), high-grade intraepithelial neoplasia (HGN), and esophageal squamous carcinoma (SCC), in which invasion was limited to the muscularis mucosa, were obtained from surgically removed esophagi. The expression of p75NTR, the proliferation marker ki67, hTERT, p53, and p63 was examined immunohistochemically. The expression of p75NTR was detected in these tissues with average staining indexes (number of stained cells/100 nucleated cells; SI) of 1.00, 0.99, 0.81, and 0.73, respectively. The expression of ki67 in the BL significantly increased with the progression from LGN to HGN. The expression of hTERT and p53 significantly increased with the progression from NE to LGN, and then increased in a stepwise manner in HGN and SCC, with SI (hTERT/p53) of 0.10/0.11, 0.32/0.45, 0.50/0.72, and 0.65/0.61, respectively. The expression of p63 showed no significant difference among NE, LGN, HGN, and SCC, with SI of 0.82, 0.77, 0.85, and 0.87, respectively. A correlation was observed between the expression of ki67 and p53 (P = 0.005), while a negative correlation was found between p75NTR and hTERT (P = 0.01). Our results demonstrated that phenotypic changes from quiescent to active proliferation in the p75NTR-positive BL occurred during the progression from LGN to HGN. The altered expression of hTERT and p53 in the BL was detected in LGN, which suggested that additional oncogenic events that disrupt mitotic regulation in the p75NTR-positive quiescent BL may play a crucial role in malignant transformation. Further investigations using the isolation and tracing of p75NTR-positive cells in precancerous epithelia may provide us with a better understanding of squamous carcinogenesis.
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Affiliation(s)
- T Okumura
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Y Shimada
- Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - T Sakurai
- Department of Clinical Pathology, Kyoto University Hospital, Kyoto, Japan
| | - R Hori
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan.,Department of Pathology I, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - T Nagata
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Y Sakai
- Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Tsukada
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
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Tsukada K, Nishio SY, Hattori M, Usami SI. Ethnic-specific spectrum of GJB2 and SLC26A4 mutations: their origin and a literature review. Ann Otol Rhinol Laryngol 2015; 124 Suppl 1:61S-76S. [PMID: 25999548 DOI: 10.1177/0003489415575060] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [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: 11/16/2022]
Abstract
OBJECTIVE The mutation spectrum of the GJB2 and SLC26A4 genes, the 2 most common genes causing deafness, are known to be ethnic specific. In this study, the spectrum of the reported GJB2 and SLC26A4 mutations in different populations are reviewed and considered from a human migration perspective. METHODS Fifty-two and 17 articles on GJB2 and SLC26A4 mutations, respectively, were reviewed through the PubMed database from April 1996 to September 2014. The 4 most prevalent mutations were selected and compared. A cluster analysis was subsequently performed for these selected mutations. RESULTS The present review of frequent mutations shows the ethnic-specific GJB2 and SLC26A4 gene mutation spectrum. A cluster analysis of the GJB2 and SLC26A4 genes revealed similarities between ethnic populations. CONCLUSION The mutation spectrum reviewed in this study clearly indicated that the frequent mutations in the GJB2 and SLC26A4 genes are consistent with the founder mutation hypothesis. A comparison with the Y-chromosome phylogenetic tree indicated that these mutations may have occurred during human migration.
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Affiliation(s)
- Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Mitsuru Hattori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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28
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Nishio SY, Hattori M, Moteki H, Tsukada K, Miyagawa M, Naito T, Yoshimura H, Iwasa YI, Mori K, Shima Y, Sakuma N, Usami SI. Gene expression profiles of the cochlea and vestibular endorgans: localization and function of genes causing deafness. Ann Otol Rhinol Laryngol 2015; 124 Suppl 1:6S-48S. [PMID: 25814645 DOI: 10.1177/0003489415575549] [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] [Indexed: 02/01/2023]
Abstract
OBJECTIVES We sought to elucidate the gene expression profiles of the causative genes as well as the localization of the encoded proteins involved in hereditary hearing loss. METHODS Relevant articles (as of September 2014) were searched in PubMed databases, and the gene symbols of the genes reported to be associated with deafness were located on the Hereditary Hearing Loss Homepage using localization, expression, and distribution as keywords. RESULTS Our review of the literature allowed us to systematize the gene expression profiles for genetic deafness in the inner ear, clarifying the unique functions and specific expression patterns of these genes in the cochlea and vestibular endorgans. CONCLUSIONS The coordinated actions of various encoded molecules are essential for the normal development and maintenance of auditory and vestibular function.
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Affiliation(s)
- Shin-Ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Mitsuru Hattori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hideaki Moteki
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Maiko Miyagawa
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takehiko Naito
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hidekane Yoshimura
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoh-Ichiro Iwasa
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kentaro Mori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yutaka Shima
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Naoko Sakuma
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Otorhinolaryngology and Head and Neck Surgery, Yokohama City University School of Medicine, Yokohama, Japan
| | - Shin-Ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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29
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Tsukada K, Fukuoka H, Usami SI. Vestibular functions of hereditary hearing loss patients with GJB2 mutations. Audiol Neurootol 2015; 20:147-52. [PMID: 25824904 DOI: 10.1159/000368292] [Citation(s) in RCA: 7] [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] [Received: 01/17/2014] [Accepted: 09/10/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES Mutations in the GJB2 gene have been of particular interest as it is the most common causative gene for congenital deafness in all populations. Detailed audiological features, including genotype-phenotype correlations, have been well documented. However, in spite of abundant gene as well as protein expression in the vestibular end organs, neither vestibular symptoms nor vestibular functions have yet been elucidated. In the present study, vestibular functions were evaluated in patients diagnosed with GJB2-related deafness. SUBJECTS AND METHODS Vestibular functions were evaluated by caloric test and cervical vestibular evoked myogenic potential (cVEMP) testing in 24 patients with biallelic GJB2 mutations. RESULTS AND DISCUSSION Twenty-one of 23 patients (91.3%) had normal caloric responses and significantly lower cVEMP amplitudes than the control subjects. In the patients who were able to undergo vestibular testing, the mostly normal reactions to caloric testing indicated that the lateral semicircular canal was intact. However, the majority of GJB2 patients showed low cVEMP reactions, indicating a saccular defect.
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Affiliation(s)
- Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto City, Japan
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Tsukada K, Ichinose A, Miyagawa M, Mori K, Hattori M, Nishio SY, Naito Y, Kitajiri SI, Usami SI. Detailed hearing and vestibular profiles in the patients with COCH mutations. Ann Otol Rhinol Laryngol 2015; 124 Suppl 1:100S-10S. [PMID: 25780252 DOI: 10.1177/0003489415573074] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 01/11/2023]
Abstract
OBJECTIVES To evaluate the clinical features of Japanese DFNA9 families with mutations of the COCH gene. METHODS Mutation screening was performed using targeted next-generation sequencing (NGS) for 63 previously reported deafness genes. The progression of hearing loss and vestibular dysfunction were evaluated by pure-tone audiometry, caloric testing, cVEMP, and computed dynamic posturography. RESULTS We detected 1 reported mutation of p.G88E and 2 novel mutations of p.I372T and p.C542R. The patients with the novel mutations of p.I372T and p.C542R within the vWFA2 domain showed early onset progressive hearing loss, and the patients with the p.G88E mutation showed late onset hearing loss and acute hearing deterioration over a short period. Vestibular symptoms were reported in the patients with p.G88E and p.C542R. Vestibular testing was performed for the family with the p.G88E mutation. Severe vestibular dysfunction was observed in the proband, and the proband's son showed unilateral semicircular canal dysfunction with mild hearing loss. CONCLUSIONS Targeted exon resequencing of selected genes using NGS successfully identified mutations in the relatively rare deafness gene, COCH, in the Japanese population. The phenotype is compatible with that described in previous reports. Additional supporting evidence concerning progressive hearing loss and deterioration of vestibular function was obtained from our study.
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Affiliation(s)
- Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Aya Ichinose
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Maiko Miyagawa
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kentaro Mori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Mitsuru Hattori
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yasushi Naito
- Department of Otorhinolaryngology, Kobe City Medical Center General Hospital, Hyogo, Japan
| | - Shin-Ichiro Kitajiri
- Department of Otolaryngology, Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shin-Ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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Miyagawa M, Nishio SY, Sakurai Y, Hattori M, Tsukada K, Moteki H, Kojima H, Usami SI. The Patients Associated With TMPRSS3 Mutations Are Good Candidates for Electric Acoustic Stimulation. Ann Otol Rhinol Laryngol 2015; 124 Suppl 1:193S-204S. [DOI: 10.1177/0003489415575056] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Objectives: To clarify the frequency of TMPRSS3 mutations in the hearing loss population, genetic analysis was performed, and detailed clinical characteristics were collected. Optical intervention for patients with TMPRSS3 mutations was also discussed. Methods: Massively parallel DNA sequencing (MPS) was applied for the target exon-sequencing of 63 deafness genes in a population of 1120 Japanese hearing loss patients. Results: Hearing loss in 5 patients was found to be caused by compound heterozygous TMPRSS3 mutations, and their detailed clinical features were collected and analyzed. Typically, all of the patients showed ski slope type audiograms and progressive hearing loss. Three of the 5 patients received electric acoustic stimulation (EAS), which showed good results. Further, the onset age was found to vary, and there were some correlations between genotype and phenotype (onset age). Conclusions: MPS is a powerful tool for the identification of rare causative deafness genes, such as TMPRSS3. The present clinical characteristics not only confirmed the findings from previous studies but also provided clinical evidence that EAS is beneficial for patients possessing TMPRSS3 mutations.
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Affiliation(s)
- Maiko Miyagawa
- Department of Otorhinolaryngology, Shinshu University School of Medicine Matsumoto, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine Matsumoto, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yuika Sakurai
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Mitsuru Hattori
- Department of Otorhinolaryngology, Shinshu University School of Medicine Matsumoto, Japan
| | - Keita Tsukada
- Department of Otorhinolaryngology, Shinshu University School of Medicine Matsumoto, Japan
| | - Hideaki Moteki
- Department of Otorhinolaryngology, Shinshu University School of Medicine Matsumoto, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hiromi Kojima
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Shin-ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine Matsumoto, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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Abstract
CONCLUSION Bilateral electric acoustic stimulation (EAS) effectively improved speech perception in noise and sound localization in patients with high-frequency hearing loss. OBJECTIVE To evaluate bilateral EAS efficacy of sound localization detection and speech perception in noise in two cases of high-frequency hearing loss. METHODS Two female patients, aged 38 and 45 years, respectively, received bilateral EAS sequentially. Pure-tone audiometry was performed preoperatively and postoperatively to evaluate the hearing preservation in the lower frequencies. Speech perception outcomes in quiet and noise and sound localization were assessed with unilateral and bilateral EAS. RESULTS Residual hearing in the lower frequencies was well preserved after insertion of a FLEX(24) electrode (24 mm) using the round window approach. After bilateral EAS, speech perception improved in quiet and even more so in noise. In addition, the sound localization ability of both cases with bilateral EAS improved remarkably.
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Affiliation(s)
| | | | | | - Satoshi Iwasaki
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | | | - Shin-Ichi Usami
- Department of Otorhinolaryngology
- Correspondence: Shin-ichi Usami MD PhD, Department of Otorhinolaryngology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390-8621, Japan. +81 263 37 2666. +81 263 36 9164.
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Tsuchiya Y, Kawai S, Tazawa K, Yamagishi H, Arai H, Manabe T, Sekine S, Okumura T, Nagata T, Tsukada K. 251. Is laparoscopy-assisted colectomy superior to open colectomy? Comparison of the long term postoperative course and prognosis. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.243] [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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Takumi Y, Matsumoto N, Cho B, Ono H, Mori K, Tsukada K, Ichinose A, Yoshimura H, Iwasaki S, Komune S, Usami SI. A clinical experience of 'STAMP' plate-guided Bonebridge implantation. Acta Otolaryngol 2014; 134:1042-6. [PMID: 25115972 PMCID: PMC4196550 DOI: 10.3109/00016489.2014.900703] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Conclusion The surface template-assisted marker positioning (STAMP) method is useful for successful Bonebridge™ (BB) implantation on a planned site while avoiding dangerous positions. Objectives To confirm the usefulness of the STAMP method for the safe operation of BB. Methods From a patient’s temporal bone CT data, a guide plate and confirmation plate were generated by the STAMP method. The guide plate is used to mark the correct place for implantation, while the confirmation plate lets us know the correct angle and depth of the hole. Results With the guide plate, the correct place for BB implantation was easily found. The hole was made to be an appropriate size with the confirmation plate while exposing only a small part of sigmoid sinus as simulated. Finally, the BB implant was successfully placed exactly at the planned site.
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Affiliation(s)
- Yutaka Takumi
- Department of Otorhinolaryngology
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto
| | - Nozomu Matsumoto
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
| | - Byunghyun Cho
- Department of Advanced Medical Initiatives, Faculty of Medical Sciences, Kyushu University, Fukuoka
| | | | | | | | | | | | - Satoshi Iwasaki
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto
| | - Shizuo Komune
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
| | - Shin-ichi Usami
- Department of Otorhinolaryngology
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto
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Even J, Yakushev A, Düllmann CE, Haba H, Asai M, Sato TK, Brand H, Di Nitto A, Eichler R, Fan FL, Hartmann W, Huang M, Jäger E, Kaji D, Kanaya J, Kaneya Y, Khuyagbaatar J, Kindler B, Kratz JV, Krier J, Kudou Y, Kurz N, Lommel B, Miyashita S, Morimoto K, Morita K, Murakami M, Nagame Y, Nitsche H, Ooe K, Qin Z, Schädel M, Steiner J, Sumita T, Takeyama M, Tanaka K, Toyoshima A, Tsukada K, Türler A, Usoltsev I, Wakabayashi Y, Wang Y, Wiehl N, Yamaki S. Nuclear chemistry. Synthesis and detection of a seaborgium carbonyl complex. Science 2014; 345:1491-3. [PMID: 25237098 DOI: 10.1126/science.1255720] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Experimental investigations of transactinoide elements provide benchmark results for chemical theory and probe the predictive power of trends in the periodic table. So far, in gas-phase chemical reactions, simple inorganic compounds with the transactinoide in its highest oxidation state have been synthesized. Single-atom production rates, short half-lives, and harsh experimental conditions limited the number of experimentally accessible compounds. We applied a gas-phase carbonylation technique previously tested on short-lived molybdenum (Mo) and tungsten (W) isotopes to the preparation of a carbonyl complex of seaborgium, the 106th element. The volatile seaborgium complex showed the same volatility and reactivity with a silicon dioxide surface as those of the hexacarbonyl complexes of the lighter homologs Mo and W. Comparison of the product's adsorption enthalpy with theoretical predictions and data for the lighter congeners supported a Sg(CO)6 formulation.
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Affiliation(s)
- J Even
- Helmholtz-Institut Mainz, 55099 Mainz, Germany
| | - A Yakushev
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Ch E Düllmann
- Helmholtz-Institut Mainz, 55099 Mainz, Germany. GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany. Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany.
| | - H Haba
- RIKEN, Wako, Saitama 351-0198, Japan
| | - M Asai
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T K Sato
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - H Brand
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Di Nitto
- Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany
| | - R Eichler
- Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland. Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - F L Fan
- Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China
| | - W Hartmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - M Huang
- RIKEN, Wako, Saitama 351-0198, Japan
| | - E Jäger
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - D Kaji
- RIKEN, Wako, Saitama 351-0198, Japan
| | - J Kanaya
- RIKEN, Wako, Saitama 351-0198, Japan
| | - Y Kaneya
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | | | - B Kindler
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J V Kratz
- Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany
| | - J Krier
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Y Kudou
- RIKEN, Wako, Saitama 351-0198, Japan
| | - N Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - B Lommel
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - S Miyashita
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan. Department of Chemistry, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | | | - K Morita
- RIKEN, Wako, Saitama 351-0198, Japan. Department of Physics, Kyushu University, Higashi-Ku, Fukuoka, 812-8581, Japan
| | - M Murakami
- RIKEN, Wako, Saitama 351-0198, Japan. Department of Chemistry, Niigata University, Niigata, Niigata 950-2181, Japan
| | - Y Nagame
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - H Nitsche
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA. Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, USA
| | - K Ooe
- Department of Chemistry, Niigata University, Niigata, Niigata 950-2181, Japan
| | - Z Qin
- Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China
| | - M Schädel
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - J Steiner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Sumita
- RIKEN, Wako, Saitama 351-0198, Japan
| | | | - K Tanaka
- RIKEN, Wako, Saitama 351-0198, Japan
| | - A Toyoshima
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - K Tsukada
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - A Türler
- Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland. Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - I Usoltsev
- Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland. Paul Scherrer Institute, 5232 Villigen, Switzerland
| | | | - Y Wang
- Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China
| | - N Wiehl
- Helmholtz-Institut Mainz, 55099 Mainz, Germany. Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany
| | - S Yamaki
- RIKEN, Wako, Saitama 351-0198, Japan. Department of Physics, Saitama University, Saitama 338-8570, Japan
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Koike T, Suzuki Y, Genyu S, Kobayashi I, Komori H, Otsu H, Sakuma H, Sakuma K, Sarausad EM, Shimada K, Shinozuka T, Tamura H, Tsukada K, Ukai M, Yamamoto TO. Comprehensive data on ionising radiation from Fukushima Daiichi nuclear power plant in the town of Miharu, Fukushima Prefecture: The Misho Project. J Radiol Prot 2014; 34:675-698. [PMID: 25125455 DOI: 10.1088/0952-4746/34/3/675] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Data related to radioactivity released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident on 15 March 2011 gathered by residents of Miharu, Fukushima Prefecture, and by Tohoku University are presented. These data sets consist of (1) the earliest radiation monitoring by a Geiger counter in the town, (2) ratios of radioactivity between (132)Te and (137)Cs for a wide area between Fukushima and Tokyo, (3) radiation measurement of soil samples collected from 18 school grounds, and (4) external radiation exposure of 1400 students using OSL badges. By combining and analysing these various data sets, a curve for the cumulative total external exposure as a function of time, with 16 : 00 h on 15 March 2011 being time zero, is obtained. The average cumulative external dosage is estimated to be 10 mSv (σ = 4.2 mSv) over 10 years. In addition, the initiative that the residents of Miharu took in response to the FDNPP accident, which became known as The Misho Project (MP), is documented; in particular, the time at which the municipality instructed the immediate ingestion of iodine tablets by those under the age of 40, 13 : 00 h on 15 March 2011, is assessed.
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Affiliation(s)
- T Koike
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Y Suzuki
- Municipal government of Miharu, Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan
| | - S Genyu
- Fukujyuji-Temple, Miharu-machi, Tamura-gun, Fukushima, 963-7767, Japan
| | - I Kobayashi
- Nagase Landauer, Ltd, Suwa, Tsukuba, Ibaraki, 300-2686, Japan
| | - H Komori
- Nagase Landauer, Ltd, Suwa, Tsukuba, Ibaraki, 300-2686, Japan
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sakuma
- Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan
| | - K Sakuma
- Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan
| | - E M Sarausad
- Microsoft Corporation, Redmond, WA, USA
- Alacer Group LLC, Bellevue, WA, USA
| | - K Shimada
- Cyclotron Radioisotope Center, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - T Shinozuka
- Cyclotron Radioisotope Center, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - H Tamura
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - K Tsukada
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - M Ukai
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - T O Yamamoto
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
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Zhao YL, Nagame Y, Nishinaka I, Tsukada K, Sueki K, Nakahara H, Goto S, Tanikawa M. Shapes of Fragment Mass-Yield Distributions and Shapes of Scissioning Nuclei in Actinides. J NUCL SCI TECHNOL 2014. [DOI: 10.1080/00223131.2002.10875402] [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] [Indexed: 10/23/2022]
Affiliation(s)
- Y. L. Zhao
- Institute of High Energy Physics, Chinese Academy of Science, Beijing 100039, China
- Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
- Tokyo Metropolitan University, Tokyo 192-0397, Japan
| | - Y. Nagame
- Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
| | - I. Nishinaka
- Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
| | - K. Tsukada
- Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
| | - K. Sueki
- Tokyo Metropolitan University, Tokyo 192-0397, Japan
| | - H. Nakahara
- Tokyo Metropolitan University, Tokyo 192-0397, Japan
| | - S. Goto
- Chemistry Department, Niigata University, Niigata, 950-21, Japan
| | - M. Tanikawa
- Department of Chemistry, University of Tokyo, Tokyo 113, Japan
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Usami SI, Moteki H, Tsukada K, Miyagawa M, Nishio SY, Takumi Y, Iwasaki S, Kumakawa K, Naito Y, Takahashi H, Kanda Y, Tono T. Hearing preservation and clinical outcome of 32 consecutive electric acoustic stimulation (EAS) surgeries. Acta Otolaryngol 2014; 134:717-27. [PMID: 24834939 PMCID: PMC4086239 DOI: 10.3109/00016489.2014.894254] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Conclusions Our results indicated that electric acoustic stimulation (EAS) is beneficial for Japanese-speaking patients, including those with less residual hearing at lower frequencies. Comparable outcomes for the patients with less residual hearing indicated that current audiological criteria for EAS could be expanded. Successful hearing preservation results, together with the progressive nature of loss of residual hearing in these patients, mean that minimally invasive full insertion of medium/long electrodes in cochlear implantation (CI) surgery is a desirable solution. The minimally invasive concepts that have been obtained through EAS surgery are, in fact, crucial for all CI patients. Objectives This study was conducted to evaluate hearing preservation results and speech discrimination outcomes of hearing preservation surgeries using medium/long electrodes. Methods A total of 32 consecutive minimally invasive hearing preservation CIs (using a round window approach with deep insertion of a flexible electrode) were performed in 30 Japanese patients (two were bilateral cases), including patients with less residual hearing. Hearing preservation rates as well as speech discrimination/perception scores were investigated on a multicenter basis. Results Postoperative evaluation after full insertion of the flexible electrodes (24 mm, 31.5 mm) showed that residual hearing was well preserved in all 32 ears. In all patients, speech discrimination and perception scores were improved postoperatively.
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Hashimoto T, Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Guaraldo C, Hayano RS, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishiguro Y, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kato Y, Kawasaki S, Kienle P, Kou H, Ma Y, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Piscicchia K, Poli Lener M, Romero Vida A, Sada Y, Sakaguchi A, Sakuma F, Sato M, Scordo A, Sekimoto M, Shi H, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tanida K, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Vazquez Doce O, Widmann E, Wuenschek BK, Yamaga T, Yamazaki T, Yim H, Zhang Q, Zmeska J. A search for the K−ppbound state in the 3He( K−in-flight, n) reaction at J-PARC. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146609008] [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: 11/14/2022] Open
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40
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Sada Y, Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Guaraldo C, Hashimoto T, Hayano RS, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishiguro Y, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kato Y, Kawasaki S, Kienle P, Kou H, Ma Y, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Piscicchia K, Poli Lener M, Romero Vidal A, Sakaguchi A, Sakuma F, Sato M, Scordo A, Sekimoto M, Shi H, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tanida K, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Vazquez Doce O, Widmann E, Weunschek BK, Yamaga T, Yamazaki T, Yim H, Zhang Q, Zmeskal J. Search for the K−ppbound state via the in-flight 3He( K−, n) reaction. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20148102016] [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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41
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Nagame Y, Nishinaka I, Tsukada K, Ichikawa S, Ikezoe H, Zhao YL, Oura Y, Sueki K, Nakahara H, Tanikawa M, Ohtsuki T, Takamiya K, Nakanishi K, Kudo H, Hamajima Y, Chung Y. Bimodal Nature of Low Energy Fission of Light Actinides. RADIOCHIM ACTA 2013. [DOI: 10.1524/ract.1997.78.special-issue.3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Y. Nagame
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11, Japan
| | - I. Nishinaka
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11, Japan
| | - K. Tsukada
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11, Japan
| | - S. Ichikawa
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11, Japan
| | - H. Ikezoe
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11, Japan
| | - Y. L. Zhao
- Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
| | - Y. Oura
- Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
| | - K. Sueki
- Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
| | - H. Nakahara
- Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
| | - M. Tanikawa
- Department of Chemistry, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
| | - T. Ohtsuki
- Laboratory of Nuclear Science, Tohoku University, Taihaku-ku, Sendai 982, Japan
| | - K. Takamiya
- Department of Chemistry, Osaka University, Toyonaka, Osaka 560, Japan
| | - K. Nakanishi
- Department of Chemistry, Osaka University, Toyonaka, Osaka 560, Japan
| | - H. Kudo
- Department of Chemistry, Niigata University, Niigata 950-21, Japan
| | - Y. Hamajima
- Department of Chemistry, Kanazawa University, Kanazawa 920-11, Japan
| | - Y.H. Chung
- Department of Chemistry,Hallym University,Chuncheon,Kangwon-Do 200-702,Korea
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Sekine S, Shimada Y, Nagata T, Sawada S, Yoshioka I, Matsui K, Moriyama M, Omura T, Osawa S, Shibuya K, Hashimoto I, Watanabe T, Hojo S, Hori R, Okumura T, Yoshida T, Tsukada K. Role of aquaporin-5 in gallbladder carcinoma. Eur Surg Res 2013; 51:108-17. [PMID: 24217644 DOI: 10.1159/000355675] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 09/17/2013] [Indexed: 01/04/2023]
Abstract
BACKGROUND/PURPOSE Aquaporins (AQPs) are important in controlling bile formation. However, the exact role in human gallbladder carcinogenesis has not yet been defined. METHODS AQP-5-expressing gallbladder carcinoma (GBC) cell lines (NOZ) were transfected with anti-AQP-5 small interfering RNA (siRNA). Growth, migration, invasion assay, and drug susceptibility tests were performed. Next, microRNA (miRNA) expression was analyzed by miRNA oligo chip (3D-Gene®). AQP-5 and AQP-5-related miRNA target gene expressions were also analyzed using tissue microarray (TMA) in 44 GBC samples. RESULTS Treatment with AQP-5 siRNA decreased cell proliferation, migration, and invasion. On the other hand, those cells increased IC50 of gemcitabine. By performing miRNA assays, miR-29b, -200a, and -21 were shown to be highly overexpressed in cells treated with AQP-5 siRNA NOZ. When focusing on miR-21, phosphatase and tensin homolog (PTEN) was found to be a target of miR-21. In the TMA, AQP-5/PTEN coexpression was significantly associated with the depth of invasion and MIB-1 index (p = 0.003, 0.010). Survival of patients with a high AQP-5/PTEN coexpression was longer than that of patients with a low coexpression (p = 0.003). CONCLUSIONS Our result suggested that miR-21 and PTEN may contribute to the role of AQP-5 in GBC. AQP-5 and PTEN cascades are favorable biomarkers of GBC.
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Affiliation(s)
- S Sekine
- Department of Surgery and Science, University of Toyama, Toyama, Japan
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Abstract
CONCLUSIONS The patients who received electric acoustic stimulation (EAS) cochlear implantation had relatively good vestibular function compared with the patients who did not have residual hearing. The vestibular function was well preserved after atraumatic EAS surgery. The round window approach and soft electrode are preferred to decrease the risk of impairing vestibular function. OBJECTIVES The aim of this study was to examine the characteristic features of vestibular functions before and after implantations in patients undergoing EAS. METHODS Vestibular functions in patients who underwent EAS implantation were examined by caloric testing and vestibular evoked myogenic potential (VEMP) in 11 patients before and in 13 patients after implantation. RESULTS Preoperative evaluation showed that of the 11 patients, most (73%) had good vestibular function. One of 11 patients (9%) had decreased response in postoperative VEMP but all of the patients had unchanged results in postoperative caloric testing.
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Affiliation(s)
| | - Hideaki Moteki
- Department of Otolaryngology
- Department of Hearing Implant Science, Shinshu University School of Medicine, Matsumoto City, Japan
| | | | - Satoshi Iwasaki
- Department of Hearing Implant Science, Shinshu University School of Medicine, Matsumoto City, Japan
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Honda H, Gatanaga H, Aoki T, Watanabe K, Yazaki H, Tanuma J, Tsukada K, Honda M, Teruya K, Kikuchi Y, Oka S. Raltegravir can be used safely in HIV-1-infected patients treated with warfarin. Int J STD AIDS 2013; 23:903-4. [PMID: 23258834 DOI: 10.1258/ijsa.2012.012085] [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: 11/18/2022]
Abstract
Drug co-administration often affects the patient response to warfarin through various mechanisms. We describe here five HIV-1-infected patients on treatment with warfarin in whom the use of raltegravir was associated with a favourable outcome.
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Affiliation(s)
- H Honda
- AIDS Clinical Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku Tokyo 162-8655, Japan.
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Kabuki S, Sonoda S, Hatsukawa Y, Kimura H, Asai M, Hashimoto K, Komura S, Kubo H, Matsuoka Y, Mizumoto T, Nagai Y, Nakamura S, Sato T, Sawano T, Takada A, Toyoshima A, Tsukada K, Kunieda E, Tanimori T. SU-C-144-01: Imaging Study of An Electron-Tracking Compton Camera for Nuclear Medicine. Med Phys 2013. [DOI: 10.1118/1.4813990] [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: 11/07/2022] Open
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Nakamura SN, Matsumura A, Okayasu Y, Seva T, Rodriguez VM, Baturin P, Yuan L, Acha A, Ahmidouch A, Androic D, Asaturyan A, Asaturyan R, Baker OK, Benmokhtar F, Bosted P, Carlini R, Chen C, Christy M, Cole L, Danagoulian S, Daniel A, Dharmawardane V, Egiyan K, Elaasar M, Ent R, Fenker H, Fujii Y, Furic M, Gan L, Gaskell D, Gasparian A, Gibson EF, Gogami T, Gueye P, Han Y, Hashimoto O, Hiyama E, Honda D, Horn T, Hu B, Hungerford EV, Jayalath C, Jones M, Johnston K, Kalantarians N, Kanda H, Kaneta M, Kato F, Kato S, Kawama D, Keppel C, Lan KJ, Luo W, Mack D, Maeda K, Malace S, Margaryan A, Marikyan G, Markowitz P, Maruta T, Maruyama N, Miyoshi T, Mkrtchyan A, Mkrtchyan H, Nagao S, Navasardyan T, Niculescu G, Niculescu MI, Nomura H, Nonaka K, Ohtani A, Oyamada M, Perez N, Petkovic T, Randeniya S, Reinhold J, Roche J, Sato Y, Segbefia EK, Simicevic N, Smith G, Song Y, Sumihama M, Tadevosyan V, Takahashi T, Tang L, Tsukada K, Tvaskis V, Vulcan W, Wells S, Wood SA, Yan C, Zhamkochyan S. Observation of the (Λ)(7)He hypernucleus by the (e, e'K+) reaction. Phys Rev Lett 2013; 110:012502. [PMID: 23383783 DOI: 10.1103/physrevlett.110.012502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Indexed: 06/01/2023]
Abstract
An experiment with a newly developed high-resolution kaon spectrometer and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab. The ground state of a neutron-rich hypernucleus, (Λ)(7)He, was observed for the first time with the (e, e'K+) reaction with an energy resolution of ~0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The (Λ)(7)He binding energy supplies the last missing information of the A = 7, T = 1 hypernuclear isotriplet, providing a new input for the charge symmetry breaking effect of the ΛN potential.
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Affiliation(s)
- S N Nakamura
- Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
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Hasegawa K, Minami Y, Inuzuka H, Oe S, Kato R, Tsukada K, Udagawa Y, Kuroda M. Female pseudohermaphroditism associated with maternal steroid cell tumor, not otherwise specified of the ovary: a case report and literature review. CLIN EXP OBSTET GYN 2013; 40:591-595. [PMID: 24597265] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Maternal virilization in pregnancy with or without fetal female pseudohermaphroditism has several etiologies. Of these, pregnancy luteoma is the most common cause of maternal virilization during pregnancy, and approximately 20 cases have been reported in recent years. Moreover, four cases of pregnancy luteomas with female pseudohermaphroditism have been reported. However, the extremely rare steroid cell tumor, not otherwise specified (NOS), has been reported only once as a cause for maternal virilization. Herein, the authors report the first case of maternal virilization with female pseudohermaphroditism associated with steroid cell tumor-NOS along with the clinical course, pathological features, and a review of the literature.
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Affiliation(s)
- K Hasegawa
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
| | - Y Minami
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - H Inuzuka
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - S Oe
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - R Kato
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - K Tsukada
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Y Udagawa
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - M Kuroda
- Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Tsukada K, Harayama Y, Itoga Y, Shimizu M, Kurasawa Y, Kasahara K. Comparison of DNA typing using AmpFlSTR Yfiler and PowerPlex Y System, for specimens subject to very long storage. Forensic Science International: Genetics Supplement Series 2013. [DOI: 10.1016/j.fsigss.2013.10.084] [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: 10/26/2022]
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Imataka G, Ishii J, Tsukada K, Suzumura H, Arisaka O. Ring chromosome 8 with mosaic trisomy 8 syndrome in an infant. Genet Couns 2013; 24:441-444. [PMID: 24551990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Imataka G, Noguchi M, Tsukada K, Takahashi T, Yamanouchi H, Arisaka O. Partial epilepsy and developmental delay in infant with ring chromosome 14. Genet Couns 2013; 24:81-83. [PMID: 23610869] [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: 06/02/2023]
Abstract
Ring chromosome 14 (r14) is clinically characterized by early-onset epilepsy, mental retardation, delayed speech, microcephaly, extremely mild facial dysmorphisms and ophthalmologic abnormalities. We report a case presenting with partial seizures and delayed development in infancy in which r14 was diagnosed based on chromosomal analysis. The patient was a girl with a normal family and delivery history. Afebrile generalized convulsions developed at age 9 months, and phenobarbital was started, but was changed to zonisamide due to impaired liver function. Chromosome analysis led to a diagnosis of 46, XX, r(14) (p11.2q32.3). At age 5 years, while under treatment with zonisamide and clobazam, epilepsy was characterized by multiple daily episodes of complex partial seizures. Although there are no consistent brain MRI or electroencephalogram findings, experienced pediatric neurologists can make a diagnosis based on facial dysmorphisms. When refractory epilepsy is encountered in infancy with developmental delay of unknown cause, chromosome analysis should be performed.
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Affiliation(s)
- G Imataka
- Department of Pediatrics, Dokkyo Medical University School of Medicine, Tochigi, Japan.
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