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Somiya D, Sakamoto Y, Maeda K, Takasu S, Takemoto M, Choo J, Ikezawa M, Sago F, Doba K, Ikeda A. Ruptured proximal middle cerebral artery traumatic pseudoaneurysm treated with bypass-assisted trapping surgery: A case report. Surg Neurol Int 2023; 14:263. [PMID: 37560580 PMCID: PMC10408648 DOI: 10.25259/sni_344_2023] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/27/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Traumatic pseudoaneurysms are rare but have a high mortality rate; therefore, immediate diagnosis is vital. Most pseudoaneurysms are in the internal carotid artery or peripheral arteries, while proximal middle cerebral artery pseudoaneurysms have rarely been reported. We present a case of ruptured traumatic pseudoaneurysm located at the M1-M2 bifurcation. CASE DESCRIPTION A 42-year-old man was injured in a motorcycle accident and his Glasgow coma scale score on admission was 7 (Eye opening1, Verbal response2, Motor response4 [E1V2M4]). Head computed tomography (CT) showed thick subarachnoid hemorrhage (SAH). We suspected a ruptured aneurysm, but three-dimensional CT angiography (3D-CTA) did not detect any vascular defects. Head magnetic resonance angiography showed progressive right M1 stenosis suggesting arterial dissection. 3D-CTA on day 20 showed a small aneurysm in the proximal portion of the M2. Although surgery was scheduled for day 26, suddenly left hemiparesis appeared on day 24. Head CT detected fresh SAH and emergency surgery was performed on day 25. We dissected around the ruptured point under M1 temporary occlusion with superficial temporal artery-M2 assist bypass. Contrary to our expectations, there was only a small laceration in the right M2 superior trunk. We trapped the laceration and the proximal portion of the M2 superior trunk while preserving antegrade blood flow from the M1 to the M2 inferior trunk. On the 5-month follow-up, the patient was able to walk independently. CONCLUSION Unreasonably thick traumatic SAH or spastic stenosis after head injury may indicate a traumatic pseudoaneurysm and require repeated neurovascular evaluation. If a pseudoaneurysm is detected, immediate surgical intervention is mandatory.
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Affiliation(s)
- Daiki Somiya
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Yusuke Sakamoto
- Department of Neurosurgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan
| | - Kenko Maeda
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Syuntaro Takasu
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Masaya Takemoto
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Jungsu Choo
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Mizuka Ikezawa
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Fumihiro Sago
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Kohei Doba
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
| | - Akira Ikeda
- Department of Neurosurgery, Japan Community Health Care Organization (JCHO) Chukyo Hospital, Nagoya, Japan
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Nomura T, Corboz P, Miyata A, Zherlitsyn S, Ishii Y, Kohama Y, Matsuda YH, Ikeda A, Zhong C, Kageyama H, Mila F. Unveiling new quantum phases in the Shastry-Sutherland compound SrCu 2(BO 3) 2 up to the saturation magnetic field. Nat Commun 2023; 14:3769. [PMID: 37355682 DOI: 10.1038/s41467-023-39502-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 06/13/2023] [Indexed: 06/26/2023] Open
Abstract
Under magnetic fields, quantum magnets often undergo exotic phase transitions with various kinds of order. The discovery of a sequence of fractional magnetization plateaus in the Shastry-Sutherland compound SrCu2(BO3)2 has played a central role in the high-field research on quantum materials, but so far this system could only be probed up to half the saturation value of the magnetization. Here, we report the first experimental and theoretical investigation of this compound up to the saturation magnetic field of 140 T and beyond. Using ultrasound and magnetostriction techniques combined with extensive tensor-network calculations (iPEPS), several spin-supersolid phases are revealed between the 1/2 plateau and saturation (1/1 plateau). Quite remarkably, the sound velocity of the 1/2 plateau exhibits a drastic decrease of -50%, related to the tetragonal-to-orthorhombic instability of the checkerboard-type magnon crystal. The unveiled nature of this paradigmatic quantum system is a new milestone for exploring exotic quantum states of matter emerging in extreme conditions.
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Affiliation(s)
- T Nomura
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan.
- Tokyo Denki University, Adachi, Tokyo, Japan.
| | - P Corboz
- Institute for Theoretical Physics and Delta Institute for Theoretical Physics, University of Amsterdam, XH, Amsterdam, The Netherlands.
| | - A Miyata
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - S Zherlitsyn
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Y Ishii
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan
| | - Y Kohama
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan
| | - Y H Matsuda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan
| | - A Ikeda
- Department of Engineering Science, University of Electro-Communications, Chofu, Tokyo, Japan
| | - C Zhong
- Graduate School of Engineering, Kyoto University, Nishikyouku, Kyoto, Japan
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - H Kageyama
- Graduate School of Engineering, Kyoto University, Nishikyouku, Kyoto, Japan
| | - F Mila
- Institute of Theoretical Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Sakamoto Y, Maeda K, Takemoto M, Choo J, Ikezawa M, Fujita O, Sago F, Somiya D, Ikeda A. A case of middle cerebral artery large circumferential aneurysm treated with bypass-assisted trapping surgery. Nagoya J Med Sci 2023; 85:380-387. [PMID: 37346836 PMCID: PMC10281836 DOI: 10.18999/nagjms.85.2.380] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/28/2022] [Indexed: 06/23/2023]
Abstract
M1 large circumferential aneurysms are clinically challenging because they cannot be treated by simple neck clipping and they may involve the lenticulostriate arteries (LSAs). Although some reports have described endovascular and direct surgical treatment of these aneurysms, the optimal treatment approach remains uncertain. We report a case involving a ruptured large M1 circumferential aneurysm that was treated with bypass-assisted trapping surgery and showed favorable outcomes. The patient was a 47-year-old man presenting with subarachnoid hemorrhage. Digital subtraction angiography revealed a large circumferential aneurysm in the right middle cerebral artery M1 segment with involvement of the lateral and medial LSAs. We successfully performed trapping surgery with the assistance of a superficial temporal artery (STA)-M2 bypass while preserving the medial and lateral LSAs. Although left hemiparesis caused by medial LSA thrombosis appeared in the early postoperative period, the patient showed good recovery from symptoms with rehabilitation and could independently perform daily activities at the five-month follow-up. The treatment of M1 large circumferential aneurysms should involve considerations for prevention of rebleeding, blood supply to the distal area, and preservation of perforating arteries. The treatment strategy for this challenging aneurysm should be planned based on the patient's condition and individual anatomy.
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Affiliation(s)
- Yusuke Sakamoto
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
- Department of Neurosurgery, Nagoya Ekisaikai Hospital, Nagoya, Japan
| | - Kenko Maeda
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Masaya Takemoto
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Jungsu Choo
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Mizuka Ikezawa
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Ohju Fujita
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Fumihiro Sago
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Daiki Somiya
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
| | - Akira Ikeda
- Department of Neurosurgery, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Japan
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Ikeda A, Nosato H, Takaoka S, Negoro H, Sakanashi H, Murakawa M, Nishiyama H. Can cystoscopy artificial intelligence overcome differences between cystoscope products? Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00639-5] [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: 02/12/2023]
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Sago F, Sakamoto Y, Maeda K, Takemoto M, Choo J, Ikezawa M, Fujita O, Somiya D, Ikeda A. Catastrophic Propeller Brain Injury with Large Scalp Defect Treated with Omental Flap. NMC Case Rep J 2023; 10:103-108. [PMID: 37197283 PMCID: PMC10185356 DOI: 10.2176/jns-nmc.2022-0321] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 02/09/2023] [Indexed: 05/19/2023] Open
Abstract
In this study, we report a case of catastrophic propeller brain injury with large scalp defect treated with omental flap reconstruction. A 62-year-old man was accidentally caught in a powered paraglider propeller during maintenance. The rotor blades impacted the left part of his head. On arrival at the hospital, he presented with a Glasgow Coma Scale score of E4V1M4. On some areas on his head, skin was noticeably cut off, and the brain tissue out-slipped through an open skull fracture. Continuous bleeding from the superior sagittal sinus (SSS) and the brain surface was observed during emergency surgery. Massive bleeding from the SSS was controlled using a number of tenting sutures and hemostatic agents. We evacuated the crushed brain tissue and coagulated the severed middle cerebral arteries. Dural plasty using the deep fascia of the thigh was performed. The skin defect was closed using an artificial dermis. The administration of high-dose antibiotics has failed to prevent meningitis. Moreover, the severed skin edges and fasciae were necrotic. Plastic surgeons performed debridement and vacuum-assisted closure therapy to promote wound healing. Follow-up head computed tomography revealed hydrocephalus. Lumbar drainage was performed; however, sinking skin flap syndrome was observed. After removing the lumbar drainage, cerebrospinal fluid leakage occurred. We then performed cranioplasty with a titanium mesh and omental flap on day 31. After the surgery, perfect wound healing and infection control were achieved; however, severe disturbance of consciousness remained. The patient was transferred to a nursing home. Primary hemostasis and infection control are mandatory. An omental flap has been determined to be effective in controlling infection by covering the exposed brain tissue.
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Affiliation(s)
- Fumihiro Sago
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Yusuke Sakamoto
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Kenko Maeda
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Masaya Takemoto
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Jungsu Choo
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Mizuka Ikezawa
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Ohju Fujita
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Daiki Somiya
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
| | - Akira Ikeda
- Department of Neurosurgery, Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Aichi, Japan
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Sunohara Y, Sakamoto Y, Maeda K, Takemoto M, Choo J, Ikezawa M, Fujita O, Sago F, Somiya D, Ikeda A. A case of a brain stem infarction caused by basilar artery occlusion treated with superficial temporal Artery-Superior cerebellar artery bypass surgery. Interdisciplinary Neurosurgery 2022. [DOI: 10.1016/j.inat.2022.101554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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7
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Sakamoto Y, Maeda K, Takemoto M, Choo J, Ikezawa M, Fujita O, Sago F, Somiya D, Ikeda A. A case of symptomatic carotid artery occlusion after aortic arch replacement treated with carotid-carotid crossover bypass. Surg Neurol Int 2022; 13:273. [PMID: 35855150 PMCID: PMC9282804 DOI: 10.25259/sni_415_2022] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/14/2022] [Indexed: 11/04/2022] Open
Abstract
Background:
Symptomatic common carotid artery (CCA) occlusion is rare and its treatment remains unestablished. Although cases of subclavian-to-carotid bypass have been reported, very few cases of carotid-tocarotid crossover bypass have been reported, despite its advantages. We report a case of Riles type 1A symptomatic CCA occlusion after aortic arch replacement that was treated with carotid-to-carotid crossover bypass with favorable outcomes.
Case Description:
A 65-year-old woman with a history of hypertension, hyperlipidemia, diabetes, and total arch replacement for thoracic aortic aneurysm was admitted to our hospital with a complaint of the right hemiparesis and motor aphasia. Head magnetic resonance imaging revealed a fresh infarction in the left cerebral hemisphere. Cervical computed tomography (CT) angiography revealed left CCA occlusion. Thoracic CT angiography showed severe stenosis of the left subclavian artery. SPECT showed a general decrease in blood flow in the left cerebral hemisphere. We performed a carotid-to-carotid crossover bypass with a synthetic graft that was passed through the subcutaneous tunnel. First, the right carotid artery-synthetic graft end-to-side anastomosis was performed. Subsequently, we performed synthetic graft-left CCA end-to-side anastomosis. The postoperative course was uneventful. Cervical computed tomography angiography showed perfect patency of the crossover bypass. The patient recovered almost completely and was independently performing daily activities.
Conclusion:
Carotid-to-carotid crossover bypass is a durable treatment for symptomatic CCA occlusion. Further studies are needed to compare its outcomes with those of other methods and to confirm our findings with larger sample size.
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Affiliation(s)
| | - Kenko Maeda
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Masaya Takemoto
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Jungsu Choo
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Mizuka Ikezawa
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Ohju Fujita
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Fumihiro Sago
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Daiki Somiya
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
| | - Akira Ikeda
- Department of Neurosurgery, JCHO Chukyo Hospital, Nagoya, Japan
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8
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Suzuki Y, Nagashita T, Ikeda A, Ishii K, Iwai T, Nakato T, Kawamata J. Formation of a Giant Anisotropically Ordered Assembled Structure of Inorganic Nanosheets through an Optically Induced Stream. Langmuir 2022; 38:6647-6652. [PMID: 35579556 DOI: 10.1021/acs.langmuir.2c00528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Formation of a desirable submillimeter-scaled assembled structure of particles in the colloid is a difficult subject in colloidal chemistry. Herein, a submillimeter-scaled ordered assembled structure consisting of highly anisotropic two-dimensional plate-like particles, niobate nanosheets, was obtained through an optical manipulation technique that was assisted by a scattering-force-induced stream. A 532 nm continuous wave laser beam with a power of 400 mW was used to illuminate a liquid crystalline niobate nanosheet colloid from the bottom side of a sample cell, inducing the stream of oriented nanosheets toward the upper side of the sample cell. As a result, a 200 μm ordered assembled structure consisting of oriented nanosheets was formed. The assembled structure was also characterized by two-dimensional anisotropy, reflecting that the highly anisotropic morphologies of each nanosheet and the shape of that structure were dependent on the polarization of incident illumination. This study has revealed a new noncontact and on-demand way to obtain submillimeter-scaled ordered anisotropic colloidal assembled structures of nanosized particles such as nanosheets, contributing to fundamental materials science and expanding the utilities of nanosheets.
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Affiliation(s)
- Yasutaka Suzuki
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan
| | - Takashi Nagashita
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan
| | - Akira Ikeda
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan
| | - Katsuhiro Ishii
- The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu, Hamamatsu, Shizuoka 431-1202, Japan
| | - Toshiaki Iwai
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Teruyuki Nakato
- Department of Applied Chemistry, Strategic Research Unit for Innovative Multiscale Materials, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyu-shu, Fukuoka 804-8550, Japan
| | - Jun Kawamata
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan
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Suetomi T, Ichioka D, Iimura T, Kojo K, Ikeda A, Kimura T, Kawahara T, Hoshi A, Kandori S, Negoro H, Nishiyama H. Characteristics of testicular atrophy during testosterone replacement therapy (TRT). J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.398] [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: 10/18/2022]
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10
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Yamane N, Ikeda A, Tomooka K, Saito I, Maruyama K, Eguchi E, Suyama K, Fujii A, Shiba T, Tanaka K, Kooka A, Nakamura S, Kajita M, Kawamura R, Takata Y, Osawa H, Steptoe A, Tanigawa T. Salivary Alpha-Amylase Activity and Mild Cognitive Impairment among Japanese Older Adults: The Toon Health Study. J Prev Alzheimers Dis 2022; 9:752-757. [PMID: 36281680 DOI: 10.14283/jpad.2022.51] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND There is growing interest in examining objective markers for early identification and behavioral intervention to prevent dementia and mild cognitive impairment in clinical and community settings. OBJECTIVE To investigate the association between salivary alpha-amylase as an objective measure of psychological stress response and mild cognitive impairment for the implication of psychological stress in the development of mild cognitive impairment. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study involved 865 participants aged ≥ 65 years. A saliva sample was collected in the morning, and the levels of salivary alpha-amylase were assayed. Mild cognitive impairment was evaluated using the Japanese version of the Montreal Cognitive Assessment; a score < 26 was indicative of mild cognitive impairment. A multivariable logistic regression model was used to examine the association of salivary alpha-amylase and mild cognitive impairment after adjusting for age, sex, current drinking status, current smoking status, body mass index, hypertension, diabetes mellitus, physical activity, education, social support, social network, and heart rate variability. RESULTS Salivary alpha-amylase was associated with mild cognitive impairment (the multivariable-adjusted odds ratio [95% confidence interval] for the 1-standard deviation increment of log-transformed salivary alpha-amylase was 1.24 [1.07-1.44]). This significant association persisted after adjusting for various confounding factors. CONCLUSION Elevation of salivary alpha-amylase was associated with mild cognitive impairment among Japanese community-dwelling older adults. This suggests that salivary alpha-amylase is a useful objective marker of psychological stress responses associated with mild cognitive impairment.
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Affiliation(s)
- N Yamane
- Takeshi Tanigawa, MD, PhD, Department of Public Health, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. Phone: +81 (3) 5802-1049 Fax: +81 (3) 3814-0305,
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11
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Nakamura D, Matsuda YH, Ikeda A, Miyake A, Tokunaga M, Takeyama S, Kanomata T. Magnetoconduction in the Correlated Semiconductor FeSi in Ultrastrong Magnetic Fields up to a Semiconductor-to-Metal Transition. Phys Rev Lett 2021; 127:156601. [PMID: 34678000 DOI: 10.1103/physrevlett.127.156601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/09/2021] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
Magnetoresistance of the correlated narrow-gap semiconductor FeSi was investigated by the radio frequency self-resonant spiral coil technique in magnetic fields up to 500 T, which is supplied by an electromagnetic flux compression megagauss generator. Semiconductor-to-metal transition accomplishes around 270 T observed as a sharp kink in the magnetoresistance, which implies the closing of the hybridization gap by the Zeeman shift of band edges. In the temperature-magnetic field phase diagram, the semiconductor-metal transition field is found to be almost independent of temperature, which is in contrast to a characteristic magnetic field associated with the hopping magnetoconduction in the in-gap localized states, exhibiting a notable temperature dependence.
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Affiliation(s)
- D Nakamura
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y H Matsuda
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Ikeda
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Miyake
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - M Tokunaga
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - S Takeyama
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Kanomata
- Research Institute for Engineering and Technology, Tohoku Gakuin University, Tagajo, Miyagi 985-8537, Japan
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12
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Ikeda A, Kochi Y, Nosato H, Negoro H, Sakanashi H, Murakawa M, Nishiyama H. Is real-time detection based on probability map of bladder tumor possible in clinic cystoscopy using deep learning? Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01608-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Gen M, Ikeda A, Kawachi S, Shitaokoshi T, Matsuda YH, Kohama Y, Nomura T. Higher magnetic-field generation by a mass-loaded single-turn coil. Rev Sci Instrum 2021; 92:033902. [PMID: 33819992 DOI: 10.1063/5.0038732] [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: 11/25/2020] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Single-turn coil (STC) technique is a convenient way to generate ultrahigh magnetic fields of more than 100 T. During the field generation, the STC explosively destructs outward due to the Maxwell stress and Joule heating. Unfortunately, the STC does not work at its full potential because it has already expanded when the maximum magnetic field is reached. Here, we propose an easy way to delay the expansion and increase the maximum field by using a mass-loaded STC. By loading clay on the STC, the field profile drastically changes, and the maximum field increases by 4%. This method offers access to higher magnetic fields for physical property measurements.
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Affiliation(s)
- M Gen
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Ikeda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - S Kawachi
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
| | - T Shitaokoshi
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y H Matsuda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kohama
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Nomura
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Putro WS, Ikeda A, Shigeyasu S, Hamura S, Matsumoto S, Lee VY, Choi JC, Fukaya N. Sustainable Catalytic Synthesis of Diethyl Carbonate. ChemSusChem 2021; 14:842-846. [PMID: 33230917 DOI: 10.1002/cssc.202002471] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/20/2020] [Indexed: 06/11/2023]
Abstract
New sustainable approaches should be developed to overcome equilibrium limitation of dialkyl carbonate synthesis from CO2 and alcohols. Using tetraethyl orthosilicate (TEOS) and CO2 with Zr catalysts, we report the first example of sustainable catalytic synthesis of diethyl carbonate (DEC). The disiloxane byproduct can be reverted to TEOS. Under the same conditions, DEC can be synthesized using a wide range of alkoxysilane substrates by investigating the effects of the number of ethoxy substituent in alkoxysilane substrates, alkyl chain, and unsaturated moiety on the fundamental property of this reaction. Mechanistic insights obtained by kinetic studies, labeling experiments, and spectroscopic investigations reveal that DEC is generated via nucleophilic ethoxylation of a CO2 -inserted Zr catalyst and catalyst regeneration by TEOS. The unprecedented transformation offers a new approach toward a cleaner route for DEC synthesis using recyclable alkoxysilane.
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Affiliation(s)
- Wahyu S Putro
- Interdisciplinary Research Center for Catalytic Chemistry (IRC3), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1, Higashi, Japan
| | - Akira Ikeda
- Interdisciplinary Research Center for Catalytic Chemistry (IRC3), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1, Higashi, Japan
| | | | | | | | - Vladimir Ya Lee
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan
| | - Jun-Chul Choi
- Interdisciplinary Research Center for Catalytic Chemistry (IRC3), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1, Higashi, Japan
| | - Norihisa Fukaya
- Interdisciplinary Research Center for Catalytic Chemistry (IRC3), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1, Higashi, Japan
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15
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Zhou XG, Yao Y, Matsuda YH, Ikeda A, Matsuo A, Kindo K, Tanaka H. Particle-Hole Symmetry Breaking in a Spin-Dimer System TlCuCl_{3} Observed at 100 T. Phys Rev Lett 2020; 125:267207. [PMID: 33449724 DOI: 10.1103/physrevlett.125.267207] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
The entire magnetization process of TlCuCl_{3} has been experimentally investigated up to 100 T employing the single-turn technique. The upper critical field H_{c2} is observed to be 86.1 T at 2 K. A convex slope of the M-H curve between the lower and upper critical fields (H_{c1} and H_{c2}) is clearly observed, which indicates that a particle-hole symmetry is broken in TlCuCl_{3}. By quantum Monte Carlo simulation and the bond-operator theory method, we find that the particle-hole symmetry breaking results from strong interdimer interactions.
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Affiliation(s)
- X-G Zhou
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Yuan Yao
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y H Matsuda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Ikeda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Matsuo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - K Kindo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Tanaka
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
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16
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Ikeda A, Yamamoto T, Mineshiba J, Takashiba S. Follistatin expressed in mechanically-damaged salivary glands of male mice induces proliferation of CD49f + cells. Sci Rep 2020; 10:19959. [PMID: 33203957 PMCID: PMC7673039 DOI: 10.1038/s41598-020-77004-2] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 11/02/2020] [Indexed: 11/10/2022] Open
Abstract
Salivary glands (SGs) are very important for maintaining the physiological functions of the mouth. When SGs regenerate and repair from various damages, including mechanical, radiological, and immune diseases, acinar and granular duct cells originate from intercalated duct cells. However, the recovery is often insufficient because of SGs' limited self-repair function. Furthermore, the precise repair mechanism has been unclear. Here, we focused on CD49f, one of the putative stem cell markers, and characterized CD49f positive cells (CD49f+ cells) isolated from male murine SGs. CD49f+ cells possess self-renewal ability and express epithelial and pluripotent markers. Compared to CD49f negative cells, freshly isolated CD49f+ cells highly expressed inhibin beta A and beta B, which are components of activin that has anti-proliferative effects. Notably, an inhibitor of activin, follistatin was expressed in mechanically-damaged SGs, meanwhile no follistatin was expressed in normal SGs in vivo. Moreover, sub-cultured CD49f+ cells highly expressed both Follistatin and a series of proliferative genes, expressions of which were decreased by Follistatin siRNA. These findings indicated that the molecular interaction between activin and follistatin may induce CD49f+ cells proliferation in the regeneration and repair of mouse SGs.
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Affiliation(s)
- A Ikeda
- Department of Periodontics and Endodontics, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - T Yamamoto
- Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - J Mineshiba
- Hanamizuki Dental Clinic, 285-2 Hirano, Kita-ku, Okayama, 701-0151, Japan
| | - S Takashiba
- Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan.
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17
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Shirahama R, Tanigawa T, Tomooka K, Fan Yun L, Ikeda A, Wada H, Kales SN. 0653 Positive Effects of Long Term Continuous Positive Airway Pressure Therapy on Blood Pressure in Obstructive Sleep Apnea Patients. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Obstructive sleep apnea (OSA) is one of the common causes of hypertension. Therefore, we examine the longitudinal effect of continuous positive airway pressure (CPAP) therapy and its adherence on blood pressure among OSA patients.
Methods
One thousand two hundred ninety-three (male 1,130, female 163) patients, who were diagnosed with OSA and underwent CPAP therapy were investigated for longitudinal changes (24 months observation period) in the levels of blood pressure and body weight. The longitudinal analyses were performed by mixed effect model. Multiple Imputation with Chained Equations was also used to impute missing data. Good CPAP adherence is defined as more than 70% of the time using CPAP more than 4hours at all the measuring. Poor CPAP adherence is defined as less than 70% of the time using CPAP more than 4hours at all the measuring time points.
Results
The patient group with good CPAP adherences), compared to poor CPAP adherence, showed significant diastolic blood pressure reduction in 24 months follow-up period (β=-0.13, p=0.03) despite a lack of significant weight loss (β=-0.02, p=0.59). However, no significant associations were found between systolic blood pressure and CPAP adherence (β=-0.14, p=0.11).
Conclusion
CPAP therapy was found to have a longitudinal effect on diastolic blood pressure despite a lack of significant weight loss.
Support
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Affiliation(s)
- R Shirahama
- Department of Public Hearth. Graduate School of Medicine, Juntendo university, Tokyo, JAPAN
| | - T Tanigawa
- Department of Public Hearth. Graduate School of Medicine, Juntendo university, Tokyo, JAPAN
| | - K Tomooka
- Department of Public Hearth. Graduate School of Medicine, Juntendo university, Tokyo, JAPAN
| | - L Fan Yun
- Occupational medicine Residency, Harverd TH Chan School of Public Health, BOSTON, MA
| | - A Ikeda
- Department of Public Hearth. Graduate School of Medicine, Juntendo university, Tokyo, JAPAN
| | - H Wada
- Department of Public Hearth. Graduate School of Medicine, Juntendo university, Tokyo, JAPAN
| | - S N Kales
- Occupational medicine Residency, Harverd TH Chan School of Public Health, BOSTON, MA
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18
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Filomeno R, Ikeda A, Maruyama K, Wada H, Tanigawa T. Excessive daytime sleepiness and alcohol consumption among commercial drivers. Occup Med (Lond) 2020; 69:406-411. [PMID: 31263899 DOI: 10.1093/occmed/kqz091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 11/14/2022] Open
Abstract
BACKGROUND Commercial drivers suffering from excessive daytime sleepiness (EDS) have been identified as a major cause of road traffic accidents. Alcohol usage directly affects sleep, adversely affecting next-day alertness and performance. AIMS To examine the relationship between alcohol consumption and EDS among commercial truck drivers in Japan and the implications of this on public health. METHODS All participants in this cross-sectional study were commercial motor vehicle drivers from Tokyo and Niigata Prefecture. Participants completed a self-administered questionnaire with details of their age, body mass index, alcohol consumption, Epworth Sleepiness Scale (ESS) score and tobacco usage. Participants' oxygen desaturation index was determined by a pulse oximetry device that participants took home. RESULTS A total of 1422 males registered with the Japan Trucking Association and aged 20-69 years participated. The multivariate-adjusted odds ratio (OR) of EDS among participants aged <43 years was 0.81 (95% confidence interval (CI) 0.47-1.40) for light drinkers, 0.93 (95% CI 0.51-1.70) for moderate drinkers and 0.61 (95% CI 0.21-1.79) for heavy drinkers, compared to non-drinkers. The multivariate-adjusted OR among participants aged ≥43 years was 1.42 (95% CI 0.59-3.45) for light drinkers, 1.53 (95% CI 0.63-3.75) for moderate drinkers and 3.37 (95% CI 1.14-9.96) for heavy drinkers (P for interaction = 0.05). CONCLUSION We found that the association between ESS and alcohol intake was more evident among those aged ≥43 years, who reported higher levels of EDS with increased alcohol consumption.
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Affiliation(s)
- R Filomeno
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - A Ikeda
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - K Maruyama
- Department of Bioscience, Ehime University Graduate School of Agriculture, Ehime, Japan
| | - H Wada
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - T Tanigawa
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
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19
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Tanaka M, Takechi M, Homma A, Fukuda M, Nishimura D, Suzuki T, Tanaka Y, Moriguchi T, Ahn DS, Aimaganbetov A, Amano M, Arakawa H, Bagchi S, Behr KH, Burtebayev N, Chikaato K, Du H, Ebata S, Fujii T, Fukuda N, Geissel H, Hori T, Horiuchi W, Hoshino S, Igosawa R, Ikeda A, Inabe N, Inomata K, Itahashi K, Izumikawa T, Kamioka D, Kanda N, Kato I, Kenzhina I, Korkulu Z, Kuk Y, Kusaka K, Matsuta K, Mihara M, Miyata E, Nagae D, Nakamura S, Nassurlla M, Nishimuro K, Nishizuka K, Ohnishi K, Ohtake M, Ohtsubo T, Omika S, Ong HJ, Ozawa A, Prochazka A, Sakurai H, Scheidenberger C, Shimizu Y, Sugihara T, Sumikama T, Suzuki H, Suzuki S, Takeda H, Tanaka YK, Tanihata I, Wada T, Wakayama K, Yagi S, Yamaguchi T, Yanagihara R, Yanagisawa Y, Yoshida K, Zholdybayev TK. Swelling of Doubly Magic ^{48}Ca Core in Ca Isotopes beyond N=28. Phys Rev Lett 2020; 124:102501. [PMID: 32216444 DOI: 10.1103/physrevlett.124.102501] [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: 09/18/2019] [Revised: 12/20/2019] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
Interaction cross sections for ^{42-51}Ca on a carbon target at 280 MeV/nucleon have been measured for the first time. The neutron number dependence of derived root-mean-square matter radii shows a significant increase beyond the neutron magic number N=28. Furthermore, this enhancement of matter radii is much larger than that of the previously measured charge radii, indicating a novel growth in neutron skin thickness. A simple examination based on the Fermi-type distribution, and mean field calculations point out that this anomalous enhancement of the nuclear size beyond N=28 results from an enlargement of the core by a sudden increase in the surface diffuseness of the neutron density distribution, which implies the swelling of the bare ^{48}Ca core in Ca isotopes beyond N=28.
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Affiliation(s)
- M Tanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Research Center for Superheavy Elements, Kyushu University, Fukuoka 819-0395, Japan
| | - M Takechi
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - A Homma
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - M Fukuda
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - D Nishimura
- Department of Physics, Tokyo City University, Setagaya, Tokyo 158-8557, Japan
| | - T Suzuki
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - Y Tanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Moriguchi
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - D S Ahn
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - A Aimaganbetov
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- L.N. Gumilyov Eurasian National University, 010008 Astana, Kazakhstan
| | - M Amano
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - H Arakawa
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - S Bagchi
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- Justus Liebig University, 35392 Giessen, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - K-H Behr
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - N Burtebayev
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
| | - K Chikaato
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - H Du
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S Ebata
- Department of Physics, Saitama University, Saitama 338-8570, Japan
- School of Environment and Society, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
| | - T Fujii
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - N Fukuda
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - H Geissel
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - T Hori
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - W Horiuchi
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - S Hoshino
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - R Igosawa
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - A Ikeda
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - N Inabe
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Inomata
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - K Itahashi
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Izumikawa
- Institute for Research Promotion, Niigata University, Niigata 950-8510, Japan
| | - D Kamioka
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - N Kanda
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - I Kato
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - I Kenzhina
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
| | - Z Korkulu
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - Y Kuk
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- L.N. Gumilyov Eurasian National University, 010008 Astana, Kazakhstan
| | - K Kusaka
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Matsuta
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Mihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - E Miyata
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - D Nagae
- Research Center for Superheavy Elements, Kyushu University, Fukuoka 819-0395, Japan
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Nakamura
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Nassurlla
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
| | - K Nishimuro
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - K Nishizuka
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - K Ohnishi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Ohtake
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Ohtsubo
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - S Omika
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - H J Ong
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Ozawa
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - A Prochazka
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - H Sakurai
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - C Scheidenberger
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - Y Shimizu
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Sugihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Sumikama
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Suzuki
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - H Takeda
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - Y K Tanaka
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - I Tanihata
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- School of Physics and Nuclear Energy Engineering, Beihang University, 100191 Beijing, China
| | - T Wada
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - K Wakayama
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - S Yagi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Yamaguchi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
- Tomonaga Center for the History of the Universe, University of Tsukuba, Ibaraki 305-8571, Japan
| | - R Yanagihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Yanagisawa
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Yoshida
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T K Zholdybayev
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
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OSHIMA A, Tomooka K, Ikeda A, Maruyama K, Saito I, Tanigawa T. Association of objective sleepiness with motor vehicle crash among japanese community residents: the toon health study. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Takahashi H, Morizane C, Nomura S, Okano N, Tsuda M, Mizuno N, Satake H, Tsuji K, Shioji K, Ishii H, Yasui K, Miyakawa H, Ishiguro A, Ogura T, Ueno M, Ikeda A, Terashima T, Ikeda M, Okusaka T, Furuse J. Phase II clinical trial of gemcitabine plus oxaliplatin combination therapy (GEMOX) in patients with advanced pancreatic adenocarcinoma with a family history of pancreatic/breast/ovarian/prostate cancer or personal history of breast/ovarian/prostate cancer (FABRIC study). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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22
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Nakamura D, Ikeda A, Sawabe H, Matsuda YH, Takeyama S. Record indoor magnetic field of 1200 T generated by electromagnetic flux-compression. Rev Sci Instrum 2018; 89:095106. [PMID: 30278742 DOI: 10.1063/1.5044557] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
A peak field of 1200 T was generated by the electromagnetic flux-compression (EMFC) technique with a newly developed megagauss generator system. Magnetic fields closely up to the turn-around peak were recorded by a reflection-type Faraday rotation magnetic-field optical-fiber probe. The performance was analyzed and compared with data obtained by the preceding EMFC experiments to show a significant increase in the liner imploding speed of up to 5 km/s.
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Affiliation(s)
- D Nakamura
- Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - A Ikeda
- Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - H Sawabe
- Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Y H Matsuda
- Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - S Takeyama
- Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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Suetomi T, Tsujimoto I, Kurobe M, Ikeda A, Ishitsuka R, Kimura T, Waku N, Kojima T, Johraku A, Kawai K, Nishiyama H. 247 Correlation between testosterone to estradiol ratio and score on the aging males’ symptom scale in late-onset hypogonadism. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Schmitt F, Aurlien H, Brøgger J, Hirsch L, Schomer D, Trinka E, Pressler R, Wennberg R, Visser G, Eisermann M, Diehl B, Lesser R, Kaplan P, The Tich S, Lee J, Martins-da-Silva A, Stefan H, Neufeld M, Rubboli G, Fabricius M, Gardella E, Terney D, Meritam P, Eichele T, Asano E, Cox F, van Emde Boas W, Mameniskiene R, Marusic P, Zárubová J, Rosén I, Fuglsang-Frederiksen A, Ikeda A, MacDonald D, Terada K, Ugawa Y, Zhou D, Herman S, Beniczky S. Standardisierter Computer-basiert-organisierter Report des EEG (SCORE) – Eine strukturierende Form der EEG-Befundung. KLIN NEUROPHYSIOL 2018. [DOI: 10.1055/s-0043-125304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
ZusammenfassungEine 2013 von der „International Federation of Clinical Neurophysiology“ gegründete Taskforce hat eine international konsensfähige EEG-Terminologie entwickelt. Im Folgenden soll das Resultat – die 2. Version des Standardized Computer-based Organized Reporting of EEG (SCORE) - vorgestellt werden. Die Terminologie wurde im Rahmen eines Softwarepaketes (SCORE-EEG) in der klinischen Praxis an über 12.000 EEGs getestet. Die Auswahl der Begriffe ist kontextabhängig: die initiale Auswahl bestimmt, welche weiteren Auswahlmöglichkeiten zur Verfügung stehen. Im Verlauf wird automatisch ein Befund erstellt und dessen Einzelmerkmale in eine Datenbank eingespeist. SCORE verfügt über Module spezifisch für die Befundung epileptischer Anfälle, sowie charakteristischer neonataler und intensivmedizinische EEG-Merkmale. SCORE ist nicht nur ein nützliches Werkzeug im ambulanten, klinischen und wissenschaftlichen Setting, es erleichtert auch Qualitätssicherung, Datenaustausch und die EEG-Aus und Weiterbildung.
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Affiliation(s)
- F Schmitt
- Universitätsklinik für Neurologie, Otto-von-Guericke Universität, Magdeburg, Deutschland
| | - H Aurlien
- Department of Neurology, Haukeland University Hospital and Department of Clinical Medicine, University of Bergen, Bergen, Norwegen
| | - J Brøgger
- Department of Neurology, Haukeland University Hospital and Department of Clinical Medicine, University of Bergen, Bergen, Norwegen
| | - L Hirsch
- Comprehensive Epilepsy Center, Yale University School of Medicine, New Haven, CT, USA
| | - D Schomer
- Department of Neurology, Laboratory of Clinical Neurophysiology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA, USA
| | - E Trinka
- Universitätskliniklinik für Neurologie, Christian Doppler Klinik, Paracelsus Medizinische Universität und Zentrum für Kognitive Neurowissenschaften Salzburg, Österreich und Institut für Public Health, Versorgungsforschung & HTA, UMIT, Hall in Tirol, Österreich
| | - R Pressler
- Department of Clinical Neurophysiology, Great Ormond Street Hospital und Clinical Neuroscience, UCL Great Ormond Street Institute of Child Health, London, Großbritannien
| | - R Wennberg
- Krembil Neuroscience Centre, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Kanada
| | - G Visser
- Department of Clinical Neurophysiology, Stichting Epilepsie Instellingen Nederland (SEIN), Niederlande
| | - M Eisermann
- Department of Clinical Neurophysiology, Necker Enfants Malades Hospital, Paris, Frankreich und INSERM U1129, Paris, France, Paris Descartes University, CEA, Gif sur Yvette, Paris, Frankreich
| | - B Diehl
- University College London, Department of Clinical and Experimental Epilepsy, Queen Square, London, Großbritannien
| | - R Lesser
- Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - P Kaplan
- Johns Hopkins University School of Medicine, Baltimore, Maryland, MD, USA
| | - S The Tich
- Department of Pediatric Neurology, University Hospital of Lille, Lille, Frankreich
| | - J Lee
- Department of Neurology, Brigham and Women’s Hospital, Boston, MA, USA
| | - A Martins-da-Silva
- Department of Neurophysiology, Hospital Santo António and UMIB/ICBAS – University of Porto, Porto, Portugal
| | - H Stefan
- Abteilung für Neurologie und Biomagnetismus, Universitätsklinikum Erlangen, Deutschland
| | - M Neufeld
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - G Rubboli
- Department of Neurology, Danish Epilepsy Center, Dianalund and University of Copenhagen, Kopenhagen, Dänemark
| | - M Fabricius
- Department of Clinical Neurophysiology, Rigshospitalet, Kopenhagen, Dänemark
| | - E Gardella
- University of Southern Denmark, Odense, Dänemark
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
| | - D Terney
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
| | - P Meritam
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
| | - T Eichele
- Department of Neurology, Haukeland University Hospital and Department of Biological and Medical Psychology, University of Bergen, Norwegen
| | - E Asano
- Departments of Pediatrics and Neurology, Children’s Hospital of Michigan, Wayne State University, Detroit, Michigan, US
| | - F Cox
- Department of Clinical Neurophysiology, Stichting Epilepsie Instellingen Nederland (SEIN), Niederlande
| | - W van Emde Boas
- Department of Clinical Neurophysiology, Stichting Epilepsie Instellingen Nederland (SEIN), Niederlande
| | - R Mameniskiene
- Department of Neurology and Neurosurgery, Center for Neurology, Vilnius University, Vilnius, Litauen
| | - P Marusic
- Department of Neurology, Charles University, 2nd Faculty of Medicine, Motol University Hospital, Tschechische Republik
| | - J Zárubová
- Department of Neurology, Charles University, 2nd Faculty of Medicine, Motol University Hospital, Tschechische Republik
| | - I Rosén
- Department of Clinical Sciences, University of Lund, Lund, Schweden
| | | | - A Ikeda
- Department of Epilepsy, Movement Disorders and Physiology Kyoto University Graduate School of Medicine Shogoin, Sakyo-ku Kyoto, Japan
| | - D MacDonald
- Department of Neurosciences, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabien
| | - K Terada
- Department of Neurology, Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - Y Ugawa
- Department of Neurology, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - D Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - S Herman
- Department of Neurology, Laboratory of Clinical Neurophysiology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA, USA
| | - S Beniczky
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
- Department of Clinical Neurophysiology, Aarhus University, Aarhus, Dänemark
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25
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Kimura M, Wada H, Shirahama R, Suzuki Y, Suzuki Y, Maruyama K, Ikeda A, Tanigawa T. 0781 Association Between Snoring and Anxiety in Community-dwelling School Children. Sleep 2018. [DOI: 10.1093/sleep/zsy061.780] [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: 11/12/2022] Open
Affiliation(s)
- M Kimura
- Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - H Wada
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - R Shirahama
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - Y Suzuki
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - Y Suzuki
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - K Maruyama
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - A Ikeda
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
| | - T Tanigawa
- Department of Public Health, Graduate School of Medicine, Juntendo University, Tokyo, JAPAN
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26
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Wada H, Kimura M, Tajima T, Shirahama R, Hayashi T, Suzuki Y, Suzuki Y, Sato S, Maruyama K, Endo M, Ikeda A, Tanigawa T. 0773 Sleep Disordered Breathing Based on Symptoms And RDI in Primary School Children with Implication for Prevalence. Sleep 2018. [DOI: 10.1093/sleep/zsy061.772] [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: 11/12/2022] Open
Affiliation(s)
- H Wada
- Juntendo University, Tokyo, JAPAN
| | - M Kimura
- Juntendo University, Tokyo, JAPAN
| | - T Tajima
- Juntendo University, Tokyo, JAPAN
| | | | | | - Y Suzuki
- Juntendo University, Tokyo, JAPAN
| | - Y Suzuki
- Juntendo University, Tokyo, JAPAN
| | - S Sato
- Juntendo University, Tokyo, JAPAN
| | | | - M Endo
- Juntendo University, Tokyo, JAPAN
| | - A Ikeda
- Juntendo University, Tokyo, JAPAN
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Kawamura A, Meguro J, Takahashi M, Ikeda A, Hirai H, Kukita K, Yonekawa M, Witmanowski H, Yokota N, Hayashi T, Ito K. Artificial Conditioner for Stored Organs. Int J Artif Organs 2018. [DOI: 10.1177/039139889401700109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We have developed an artificial organ conditioning system in order not only to condition but also evaluate the viability for transplant graft of kidneys which have been stored for a long time and damaged by warm ischaemia following cardiac arrest. The conditioning system consisted of an artificial lung, a roller pump, an organ chamber and perfusate. The perfusate was prepared with electrolytes, fluorocarbon, amino acid, glucose, an oxygen scavenger and so on. Conditioning was performed by continuous perfusion under mild hypothermia at 24° C. Mildly damaged kidneys (0 and 30 minutes warm ischaemia rabbit kidneys) were well conditioned but severely damaged kidneys failed to produce urination. Our device successfully exposed the viability of stored kidneys and the successful conditioning of damaged kidneys due to warm ischaemia avoiding transplantation. By establishing our method, the harvesting of kidneys following cardiac arrest will be feasible.
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Affiliation(s)
- A. Kawamura
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - J. Meguro
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - M. Takahashi
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - A. Ikeda
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - H. Hirai
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - K. Kukita
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - M. Yonekawa
- Department of Surgery, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - H. Witmanowski
- Research Institute, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - N. Yokota
- Research Institute, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - T. Hayashi
- Research Institute, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
| | - K. Ito
- Research Institute, Sapporo Hokuyu Hospital Artificial Organ & Transplantation Hospital, Sapporo - Japan
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Kawamura A, Yonekawa M, Takahashi M, Meguro J, Yanagida N, Kurauchi N, Ikeda A, Kukita K, Sakashita E. Reduction of EDA (+) fibronectin and its clinical importance on cryofiltration. Int J Artif Organs 2018. [DOI: 10.1177/039139889401701009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cryofiltration (CRYO) removes cryogel, which is a combination of fibrinogen (Fbg) and fibronectin (FN), containing pathological substances. The purpose of this study was to measure cryogel EDA(+) FN and study the relationship between EDA(+) FN and clinical symptoms in patients with rheumatoid arthritis, SLE and polymyositis. Cryogel contains 51 times more EDA(+) FN than plasma. The patients with rheumatoid arthritis showed a high level of EDA(+) FN in their plasma, and the EDA(+) FN level in plasma corresponded with changes in joint pain. We calculated the clearance level at several points in cryofiltration, and the reduction enabled us to evaluate the CRYO device. The EDA(+) FN clearance was 23.3 ± 6.4 ml/min, the pFN clearance 16.5 ± 4.1 ml/min, and the Fbg clearance 22.9 ± 5.7 ml/min. As the plasma flow in cryofiltration was 30 ml/min, a clearance of EDA(+) FN and Fbg, approximately 23 ml/min, was obviously high. The study of the plasma level change of EDA(+) FN during cryofiltration revealed a temporary elevation. These results suggest that the EDA(+) FN was most efficiently reduced by cryofiltration, would become a good indicator on plasmapheresis, and might move from other tissues into the blood during cryofiltration.
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Affiliation(s)
- A. Kawamura
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - M. Yonekawa
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - M. Takahashi
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - J. Meguro
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - N. Yanagida
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - N. Kurauchi
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - A. Ikeda
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
| | - K. Kukita
- Department of Surgery, Sapporo Hokuyu Hospital, Artificial Organ and Transplantation Hospital, Sapporo
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Abstract
Ameloblasts responsible for enamel formation express matrix metalloproteinase 20 (MMP20), an enzyme that cleaves enamel matrix proteins, including amelogenin (AMELX) and ameloblastin (AMBN). Previously, we showed that continuously erupting incisors from transgenic mice overexpressing active MMP20 had a massive cell infiltrate present within their enamel space, leading to enamel mineralization defects. However, effects of MMP20 overexpression on mouse molars were not analyzed, although these teeth more accurately represent human odontogenesis. Therefore, MMP20-overexpressing mice ( Mmp20+/+Tg+) were assessed by multiscale analyses, combining several approaches from high-resolution micro-computed tomography to enamel organ immunoblots. During the secretory stage at postnatal day 6 (P6), Mmp20+/+Tg+ mice had a discontinuous ameloblast layer and, unlike incisors, molar P12 maturation stage ameloblasts abnormally migrated away from the enamel layer into the stratum intermedium/stellate reticulum. TOPflash assays performed in vitro demonstrated that MMP20 expression promoted β-catenin nuclear localization and that MMP20 expression promoted invasion through Matrigel-coated filters. However, for both assays, significant differences were eliminated in the presence of the β-catenin inhibitor ICG-001. This suggests that MMP20 activity promotes cell migration via the Wnt pathway. In vivo, the unique molar migration of amelogenin-expressing ameloblasts was associated with abnormal deposition of ectopic calcified nodules surrounding the adherent enamel layer. Enamel content was assessed just prior to eruption at P15. Compared to wild-type, Mmp20+/+Tg+ molars exhibited significant reductions in enamel thickness (70%), volume (60%), and mineral density (40%), and MMP20 overexpression resulted in premature cleavage of AMBN, which likely contributed to the severe defects in enamel mineralization. In addition, Mmp20+/+Tg+ mouse molar enamel organs had increased levels of inactive p-cofilin, a protein that regulates cell polarity. These data demonstrate that increased MMP20 activity in molars causes premature degradation of ameloblastin and inactivation of cofilin, which may contribute to pathological Wnt-mediated cell migration away from the enamel layer.
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Affiliation(s)
- M Shin
- 1 Fukuoka Dental College, Sawara-ku, Fukuoka, Japan
| | - M B Chavez
- 2 Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - A Ikeda
- 2 Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - B L Foster
- 2 Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - J D Bartlett
- 2 Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
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Higashiyama M, Anayama T, Okami J, Tokunaga T, Yamamoto H, Kikuchi S, Ikeda A, Orihashi K, Imamura F. P2.05-010 Changes between Pre- and Post-Operative AICS (Lung) in NSCLC Patients: Predictability of High-Risk Cases with Recurrence. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.11.037] [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: 10/18/2022]
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31
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Shimotake A, Matsumoto R, Kobayashi K, Kunieda T, Mikuni N, Miyamoto S, Takahashi R, Ikeda A. Functional mapping of praxis: Electrical cortical stimulation study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1935] [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: 10/18/2022]
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32
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Takeyama H, Matsumoto R, Usami K, Shimotake A, Kunieda T, Miyamoto S, Takahashi R, Ikeda A. Higher-order motor cortices actively engage in motor inhibition: Cortical stimulation and event-related potentials as an evidence from subdural grid electrodes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.422] [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: 10/18/2022]
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33
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Tanioka K, Hitomi T, Yoshimura H, Ono M, Nakao Y, Mase R, Kohara N, Kanda M, Takahashi R, Ikeda A. Evaluation of usefulness of remote electroencephalography reading system in Japan. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2722] [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: 11/16/2022]
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34
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Nakatani M, Matsumoto R, Kobayshi K, Hitomi T, Inouchi M, Matsuhashi M, Kinoshita M, Kikuchi T, Yoshida K, Kunieda T, Takahashi R, Hattori N, Ikeda A. Inhibitory effects of electric cortical stimulation on interictal epileptiform discharges in human epileptic focus. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3774] [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: 10/18/2022]
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35
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Matsumoto R, Kikuchi T, Yoshida K, Kunieda T, Ikeda A. Subdural recording in epilepsy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.190] [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: 10/18/2022]
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36
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Kinboshi M, Mukai T, Nagao Y, Shimizu S, Ito H, Ikeda A, Ohno Y. Dysfunction of astrocytic Kir4.1 channels induces BDNF expression. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3746] [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: 10/18/2022]
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37
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Murai T, Matsuhashi M, Hitomi T, Kobayashi K, Shimotake A, Inouchi M, Kikuchi T, Yoshida K, Kunieda T, Matsumoto R, Takahashi R, Ikeda A. Invasive 3D source localization by wide-band electroencephalography findings. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Yoshino H, Nishioka K, Li Y, Ikeda A, Shibagaki Y, Hosaka A, Iwanaga H, Fujitake J, Ohi T, Miyazaki D, Sekijima Y, Oki M, Kusaka H, Ugawa Y, Funayama M, Hattori N. Clinical hetrogeneity of gch1 mutations in parkinsonism with or without dystonia. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.472] [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: 11/26/2022]
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39
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Neshige S, Matsuhashi M, Sakurai T, Kobayashi K, Shimotake A, Kikuchi T, Yoshida K, Kunieda T, Matsumoto R, Maruyama H, Takahashi R, Ikeda A. Efficacy of wide-band electrocorticography on mapping of the primary seonsory-motor area compared with electrical cortical stimulation. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.291] [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: 11/26/2022]
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40
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Kobayashi K, Matsumoto R, Usami K, Matsuhashi M, Shimotake A, Nakae T, Takeyama H, Kikuchi T, Yoshida K, Kunieda T, Takahashi R, Ikeda A. Safety of single-pulse electrical stimulation for cortico-cortical evoked potentials in epileptic human cerebral cortex. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3750] [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: 10/18/2022]
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41
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Nishioka K, Hirano M, Stoessl A, Yoshino H, Imamichi Y, Ikeda A, Li Y, Funayama M, Yamada I, Yusaku N, Sossi V, Farrer M, Hattori N. Homozygous alpha-synuclein a53v in familial parkinson's disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.471] [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: 10/18/2022]
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42
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Sakamoto M, Matsumoto R, Togawa J, Takeyama H, Hashi Y, Kobayashi K, Shimotake A, Leypoldt F, Wandinger K, Kondo T, Takahashi R, Ikeda A. Proposal of a diagnostic algorithm for autoimmune epilepsy: A preliminary retrospective cohort study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1927] [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]
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43
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Otani M, Matsumoto R, Uehara N, Fumuro T, Shimotake A, Matsuhashi M, Demura A, Kinoshita M, Takahashi R, Ikeda A. Electro-clinical features of language-induced seizures. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1918] [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: 11/26/2022]
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44
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Hitomi T, Kobayashi K, Murai T, Sakurai T, Matsumoto R, Takahashi R, Ikeda A. Positive rate of giant somatosensory evoked potential (giant SEP) and c reflex in benign adult familial myoclonus epilepsy (BAFME). J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.973] [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: 11/25/2022]
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45
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Daifu M, Inouchi M, Matsuhashi M, Kobayashi K, Shimotake A, Hitomi T, Kikuchi T, Yoshida K, Kunieda T, Matsumoto R, Takahashi R, Ikeda A. Co-occurrence of slow and high frequency oscillations (HFOs) in invasively recorded, interictal state in epilepsy patients: Is it a red slow? J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.964] [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: 10/18/2022]
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46
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Ikeda A, Tanigawa T, Charvat H, Wada H, Shigemura J, Kawachi I. Longitudinal effects of disaster-related experiences on mental health among Fukushima nuclear plant workers: The Fukushima NEWS Project Study. Psychol Med 2017; 47:1936-1946. [PMID: 28374662 DOI: 10.1017/s0033291717000320] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The Fukushima Nuclear Energy Workers' Support (NEWS) Project Study previously showed that experiences related to the Fukushima nuclear disaster on 11 March 2011 had a great impact on psychological states, including post-traumatic stress response (PTSR) and general psychological distress (GPD), among the Fukushima nuclear plant workers. To determine the causal relationship between disaster-related experiences and levels of psychological states, we conducted a 3-year longitudinal study from 2011 to 2014. METHOD PTSR and GPD of the nuclear plant workers were assessed by annual questionnaires conducted from 2011 to 2014. The present study included a total of 1417 workers who provided an assessment at baseline (2011). A total of 4160 observations were used in the present analysis. The relationship between disaster-related experiences and psychological states over time was analysed using mixed-effects logistic regression models. RESULTS A declining influence of disaster-related experiences on PTSR over time was found. However, the impact on PTSR remained significantly elevated even 3 years after the disaster in several categories of exposure including the experience of life-threatening danger, experiences of discrimination, the witnessing of plant explosion, the death of a colleague and home evacuation. The associations between GPD and disaster-related experiences showed similar effects. CONCLUSIONS The effects of disaster-related experiences on psychological states among the nuclear plant workers reduced over time, but remained significantly high even 3 years after the event.
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Affiliation(s)
- A Ikeda
- Department of Public Health,Juntendo University Graduate School of Medicine,Tokyo,Japan
| | - T Tanigawa
- Department of Public Health,Juntendo University Graduate School of Medicine,Tokyo,Japan
| | - H Charvat
- Center for Public Health Sciences, National Cancer Center,Tokyo,Japan
| | - H Wada
- Department of Public Health,Juntendo University Graduate School of Medicine,Tokyo,Japan
| | - J Shigemura
- Department of Psychiatry,National Defense Medical College,Saitama,Japan
| | - I Kawachi
- Department of Social and Behavioral Sciences,Harvard School of Public Health,Boston, MA,USA
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47
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Wada H, Kimura M, Shirahama R, Hayashi T, Suzuki Y, Suzuki Y, Maruyama K, Ikeda A, Tanigawa T. 0501 ASSOCIATION BETWEEN SLEEP-RELATED SYMPTOMS AND RESPIRATORY DISTURBANCE INDEX AMONG COMMUNITY-DWELLING SCHOOL CHILDREN. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.500] [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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48
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Igami K, Ikeda A, Maruyama K, Tomooka K, Saito I, Tanigawa T. 0088 RELATIONSHIPS BETWEEN SLEEP DISORDERED BREATHING AND CENTRAL AORTIC PRESSURE IN A COMMUNITY BASED POPULATION: THE TOON HELATH STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.087] [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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49
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Nishino E, Ikeda A, Maruyama K, Saito I, Tomooka K, Tanigawa T. 0089 NOCTURNAL INTERMITTENT HYPOXIA AND CAROTID-ARTERY ATHEROSCLEROSIS IN A GENERAL JAPANESE POPULATION: THE TOON HEALTH STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ikeda A, Charvat H, Shigemura J, Tanigawa T. 0325 INSOMNIA IN RELATION TO DISASTER-RELATED EXPERIENCES AMONG FUKUSHIMA NUCLEAR PLANT WORKERS: THE FUKUSHIMA NEWS PROJECT STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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