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Ishibashi T, Yamaguchi A, Horiguchi W, Sato T, Ito H, Shimoda T. Integrating HEAR Score and Troponin: Are We Evaluating All the Potential Utilities? Am J Med 2024; 137:e77. [PMID: 38604722 DOI: 10.1016/j.amjmed.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 04/13/2024]
Affiliation(s)
- Takuma Ishibashi
- Department of Medical Science, University of Tokyo, Japan; Young Investigators' Collaborative Research Consortium (YICRC), Japan
| | - Akira Yamaguchi
- Young Investigators' Collaborative Research Consortium (YICRC), Japan; Department of Cardiovascular Surgery, The University of Tsukuba Hospital, Ibaraki, Japan
| | - Wataru Horiguchi
- Young Investigators' Collaborative Research Consortium (YICRC), Japan; National Center for Global Health and Medicine, Tokyo, Japan
| | - Takumi Sato
- Young Investigators' Collaborative Research Consortium (YICRC), Japan; The University of Tokyo Hospital, Japan
| | - Hiroshi Ito
- Division of General Internal Medicine, Department of Internal Medicine, Tokyo Medical University Ibaraki Medical Center, Japan
| | - Tomonari Shimoda
- Young Investigators' Collaborative Research Consortium (YICRC), Japan; Department of Cardiovascular Surgery, The University of Tsukuba Hospital, Ibaraki, Japan.
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2
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Ando Y, Tsukasaki M, Huynh NCN, Zang S, Yan M, Muro R, Nakamura K, Komagamine M, Komatsu N, Okamoto K, Nakano K, Okamura T, Yamaguchi A, Ishihara K, Takayanagi H. The neutrophil-osteogenic cell axis promotes bone destruction in periodontitis. Int J Oral Sci 2024; 16:18. [PMID: 38413562 PMCID: PMC10899642 DOI: 10.1038/s41368-023-00275-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 02/29/2024] Open
Abstract
The immune-stromal cell interactions play a key role in health and diseases. In periodontitis, the most prevalent infectious disease in humans, immune cells accumulate in the oral mucosa and promote bone destruction by inducing receptor activator of nuclear factor-κB ligand (RANKL) expression in osteogenic cells such as osteoblasts and periodontal ligament cells. However, the detailed mechanism underlying immune-bone cell interactions in periodontitis is not fully understood. Here, we performed single-cell RNA-sequencing analysis on mouse periodontal lesions and showed that neutrophil-osteogenic cell crosstalk is involved in periodontitis-induced bone loss. The periodontal lesions displayed marked infiltration of neutrophils, and in silico analyses suggested that the neutrophils interacted with osteogenic cells through cytokine production. Among the cytokines expressed in the periodontal neutrophils, oncostatin M (OSM) potently induced RANKL expression in the primary osteoblasts, and deletion of the OSM receptor in osteogenic cells significantly ameliorated periodontitis-induced bone loss. Epigenomic data analyses identified the OSM-regulated RANKL enhancer region in osteogenic cells, and mice lacking this enhancer showed decreased periodontal bone loss while maintaining physiological bone metabolism. These findings shed light on the role of neutrophils in bone regulation during bacterial infection, highlighting the novel mechanism underlying osteoimmune crosstalk.
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Affiliation(s)
- Yutaro Ando
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
- Department of Microbiology, Tokyo Dental College, 2-1-14 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, Japan
- Oral Health Science Center, Tokyo Dental College, 2-9-18, Kanda-Misaki-cho, Chiyoda-ku, Tokyo, Japan
| | - Masayuki Tsukasaki
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan.
| | - Nam Cong-Nhat Huynh
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
- Unit of Prosthodontics, Laboratory of Oral-Maxillofacial Biology Faculty of Odonto-Stomatology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Shizao Zang
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Minglu Yan
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Ryunosuke Muro
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Kazutaka Nakamura
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
- Department of Oral and Maxillofacial Surgery, Department of Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masatsugu Komagamine
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Noriko Komatsu
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Kazuo Okamoto
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Kenta Nakano
- Department of Laboratory Animal Medicine, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tadashi Okamura
- Department of Laboratory Animal Medicine, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Akira Yamaguchi
- Oral Health Science Center, Tokyo Dental College, 2-9-18, Kanda-Misaki-cho, Chiyoda-ku, Tokyo, Japan
| | - Kazuyuki Ishihara
- Department of Microbiology, Tokyo Dental College, 2-1-14 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, Japan
- Oral Health Science Center, Tokyo Dental College, 2-9-18, Kanda-Misaki-cho, Chiyoda-ku, Tokyo, Japan
| | - Hiroshi Takayanagi
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan.
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3
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Shinoda H, Higano R, Oizumi T, Nakamura AJ, Kamijo T, Takahashi M, Nagaoka M, Sato Y, Yamaguchi A. Albumin Hydrogel-Coated Mesoporous Silica Nanoparticle as a Carrier of Cationic Porphyrin and Ratiometric Fluorescence pH Sensor. ACS Appl Bio Mater 2024; 7:1204-1213. [PMID: 38211352 DOI: 10.1021/acsabm.3c01103] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Here, we report that a mesoporous silica nanoparticle (MSN) coated with a fluoresceine-labeled bovine serum albumin (F-BSA) hydrogel layer works as a temperature-responsive nanocarrier for tetrakis-N-methylpyridyl porphyrin (TMPyP) and as a fluorescence ratiometric pH probe. F-BSA hydrogel-coated MSN containing TMPyP (F-BSA/MSN/TMPyP) was synthesized by thermal gelation of denatured F-BSA on the external surface of MSN. The F-BSA hydrogel layer was composed of an inner hard corona layer and an outer soft layer and was stable under physiological conditions. F-BSA/MSN/TMPyP exhibited temperature-dependent exponential release of TMPyP. In this release profile, the MSN was found to be a suitable host for stable encapsulation of tetracationic TMPyP by electrostatic interactions, and the F-BSA hydrogel layer mediated the diffusion of TMPyP from the MSN pore interior into the solution phase. Increasing temperature promoted partitioning of TMPyP from the pore interior to the F-BSA hydrogel layer, from where it was spontaneously released into the bulk solution phase by cation exchange. F-BSA/MSN/TMPyP also gave a linear ratiometric fluorescence response (1.3 per pH unit) in the pH range from 6.1 to 8.9.
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Affiliation(s)
- Hidetoshi Shinoda
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Raiha Higano
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Takashi Oizumi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Asako J Nakamura
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Toshio Kamijo
- Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Mio Takahashi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Masaaki Nagaoka
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Yusuke Sato
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
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4
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Kawamura S, Yamaguchi A, Miyazaki K, Ito SI, Watanabe N, Hamada I, Kondo T, Miyauchi M. Electrolytic Hydrogen Release from Hydrogen Boride Sheets. Small 2024:e2310239. [PMID: 38299473 DOI: 10.1002/smll.202310239] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/06/2024] [Indexed: 02/02/2024]
Abstract
Solid-state hydrogen storage materials are safe and lightweight hydrogen carriers. Among the various solid-state hydrogen carriers, hydrogen boride (HB) sheets possess a high gravimetric hydrogen capacity (8.5 wt%). However, heating at high temperatures and/or strong ultraviolet illumination is required to release hydrogen (H2 ) from HB sheets. In this study, the electrochemical H2 release from HB sheets using a dispersion system in an organic solvent without other proton sources is investigated. H2 molecules are released from the HB sheets under the application of a cathodic potential. The Faradaic efficiency for H2 release from HB sheets reached >90%, and the onset potential for H2 release is -0.445 V versus Ag/Ag+ , which is more positive than those from other proton sources, such as water or formic acid, under the same electrochemical conditions. The total electrochemically released H2 in a long-time experiment reached ≈100% of the hydrogen capacity of HB sheets. The H2 release from HB sheets is driven by a small bias; thus, they can be applied as safe and lightweight hydrogen carriers with economical hydrogen release properties.
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Affiliation(s)
- Satoshi Kawamura
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Keisuke Miyazaki
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Shin-Ichi Ito
- Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Norinobu Watanabe
- Graduate school of Science and Technology, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Ikutaro Hamada
- Department of Precision Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Takahiro Kondo
- Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan
- The Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan
- Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Sciences and R&D Center for Zero CO2 Emission Functional Materials, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
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5
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Sato T, Ishibashi T, Yamaguchi A, Ito H, Shimoda T. Importance of emergency department in diagnosis and management of lung cancer: Are we accounting for all critical factors? Am J Emerg Med 2024; 75:160-161. [PMID: 37778892 DOI: 10.1016/j.ajem.2023.09.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 09/26/2023] [Indexed: 10/03/2023] Open
Affiliation(s)
- Takumi Sato
- The University of Tokyo Hospital, Tokyo, Japan
| | - Takuma Ishibashi
- Department of Medical Science, University of Tokyo, Tokyo, Japan
| | - Akira Yamaguchi
- Department of Cardiovascular Surgery, The University of Tsukuba Hospital, Ibaraki, Japan
| | - Hiroshi Ito
- Division of General Internal Medicine, Department of Internal Medicine, Tokyo Medical University Ibaraki Medical Center
| | - Tomonari Shimoda
- Department of Cardiovascular Surgery, The University of Tsukuba Hospital, Ibaraki, Japan.
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6
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Ogura H, Nakamura T, Ishii T, Saito A, Onodera S, Yamaguchi A, Nishii Y, Azuma T. Mechanical stress-induced FGF-2 promotes proliferation and consequently induces osteoblast differentiation in mesenchymal stem cells. Biochem Biophys Res Commun 2023; 684:149145. [PMID: 37913587 DOI: 10.1016/j.bbrc.2023.149145] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/23/2023] [Indexed: 11/03/2023]
Abstract
Mechanical stimuli serve as crucial regulators of bone mass, promoting bone formation. However, the molecular mechanisms governing how mesenchymal stem cells (MSCs) respond to mechanical cues during their differentiation into osteogenic cells remain elusive. In this study, we found that cyclic stretching enhances MSC proliferation but does not increase the expression of osteoblast-related genes. We further revealed that this proliferative effect is mediated by fibroblast growth factor 2 (FGF-2), synthesized by MSCs in response to mechanical stress. Cell proliferation induced by cyclic stretching was inhibited upon the addition of either U0126, an inhibitor of mitogen-activated protein kinase kinase (MEK), or early growth response 1 (EGR1)-targeting small-hairpin RNA (shRNA), indicating the involvement of the extracellular signal-regulated kinase (ERK)/EGR1 signaling pathway. Osteoblast differentiation, evaluated through ALP activity, osteoblast-related gene expression, and mineralization, was stimulated by recombinant human FGF-2 (rhFGF-2) when applied during the proliferation phase, but not when applied during the differentiation stage alone. Our results suggest that FGF-2 indirectly promotes osteoblast differentiation as a downstream effect of stimulating cell proliferation. For the first time, we demonstrate that cyclic stretching induces MSCs to produce FGF-2, which in turn encourages cell proliferation through an autocrine/paracrine mechanism, consequently leading to osteoblast differentiation.
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Affiliation(s)
- Hiroyuki Ogura
- Department of Orthodontics, Tokyo Dental College, Tokyo, 101-0061, Japan
| | - Takashi Nakamura
- Department of Biochemistry, Tokyo Dental College, Tokyo, 101-0061, Japan; Oral Health Science Center, Tokyo Dental College, Tokyo, 101-0061, Japan.
| | - Takenobu Ishii
- Department of Orthodontics, Tokyo Dental College, Tokyo, 101-0061, Japan
| | - Akiko Saito
- Department of Biochemistry, Tokyo Dental College, Tokyo, 101-0061, Japan
| | - Shoko Onodera
- Department of Biochemistry, Tokyo Dental College, Tokyo, 101-0061, Japan
| | - Akira Yamaguchi
- Oral Health Science Center, Tokyo Dental College, Tokyo, 101-0061, Japan
| | - Yasushi Nishii
- Department of Orthodontics, Tokyo Dental College, Tokyo, 101-0061, Japan
| | - Toshifumi Azuma
- Department of Biochemistry, Tokyo Dental College, Tokyo, 101-0061, Japan; Oral Health Science Center, Tokyo Dental College, Tokyo, 101-0061, Japan
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7
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Miyazaki K, Yamaguchi A, Kusaka H, Watanabe N, Wardhana AC, Ishii S, Yamamoto A, Miyakawa M, Taniguchi T, Kondo T, Miyauchi M. Rhombohedral boron monosulfide as a metal-free photocatalyst. Sci Rep 2023; 13:19540. [PMID: 37945635 PMCID: PMC10636132 DOI: 10.1038/s41598-023-46769-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/04/2023] [Indexed: 11/12/2023] Open
Abstract
Most of previous photocatalysts contain metal species, thus exploring a metal-free photocatalyst is still challenging. A metal-free photocatalyst has an advantage for the development of economical and non-toxic artificial photosynthesis system and/or environmental purification applications. In this study, rhombohedral boron monosulfide (r-BS) was synthesized by a high-pressure solid-state reaction, and its photocatalytic properties were investigated. r-BS absorbed visible light, and its photocurrent action spectrum also exhibited visible light responsivity. The r-BS evolved hydrogen (H2) from water under ultraviolet (UV) as well as under visible light irradiation, and its internal quantum efficiency reached 1.8% under UV light irradiation. In addition to the H2 evolution reaction, the r-BS photocatalyst drove carbon dioxide (CO2) reduction and dye oxidation reactions under UV irradiation. Although bare r-BS was not so stable under strong light irradiation in water, cocatalyst modification improved its stability. These results indicate that r-BS is a new class of non-metal photocatalyst applicable for H2 production, CO2 reduction, and environmental purification reactions.
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Affiliation(s)
- Keisuke Miyazaki
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Haruki Kusaka
- Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Norinobu Watanabe
- Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Aufandra Cakra Wardhana
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Satoshi Ishii
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Akiyasu Yamamoto
- Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, 183-8538, Japan
| | - Masashi Miyakawa
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Takashi Taniguchi
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Takahiro Kondo
- Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan.
- The Advanced Institute for Materials Research, Tohoku University, 2-1-1 Sendai, Miyagi, 980-8577, Japan.
- Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Sciences and R&D Center for Zero CO2 Emission Functional Materials, University of Tsukuba, Tsukuba, 305-8573, Japan.
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
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8
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Kanchanakul I, Srinophakun TR, Kuboon S, Kaneko H, Kraithong W, Miyauchi M, Yamaguchi A. Development of Photothermal Catalyst from Biomass Ash (Bagasse) for Hydrogen Production via Dry Reforming of Methane (DRM): An Experimental Study. Molecules 2023; 28:4578. [PMID: 37375133 DOI: 10.3390/molecules28124578] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/30/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Conventional hydrogen production, as an alternative energy resource, has relied on fossil fuels to produce hydrogen, releasing CO2 into the atmosphere. Hydrogen production via the dry forming of methane (DRM) process is a lucrative solution to utilize greenhouse gases, such as carbon dioxide and methane, by using them as raw materials in the DRM process. However, there are a few DRM processing issues, with one being the need to operate at a high temperature to gain high conversion of hydrogen, which is energy intensive. In this study, bagasse ash, which contains a high percentage of silicon dioxide, was designed and modified for catalytic support. Modification of silicon dioxide from bagasse ash was utilized as a waste material, and the performance of bagasse ash-derived catalysts interacting with light irradiation and reducing the amount of energy used in the DRM process was explored. The results showed that the performance of 3%Ni/SiO2 bagasse ash WI was higher than that of 3%Ni/SiO2 commercial SiO2 in terms of the hydrogen product yield, with hydrogen generation initiated in the reaction at 300 °C. Using the same synthesis method, the current results suggested that bagasse ash-derived catalysts had better performance than commercial SiO2-derived catalysts when exposed to an Hg-Xe lamp. This indicated that silicon dioxide from bagasse ash as a catalyst support could help improve the hydrogen yield while lowering the temperature in the DRM reaction, resulting in less energy consumption in hydrogen production.
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Affiliation(s)
- Ittichai Kanchanakul
- Interdisciplinary of Sustainable Energy and Resources Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | | | - Sanchai Kuboon
- National Nanotechnology Center National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Hiroaki Kaneko
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Wasawat Kraithong
- National Nanotechnology Center National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
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9
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Strijevskaya A, Yamaguchi A, Shoji S, Ueda S, Hashimoto A, Wen Y, Wardhana AC, Lee JE, Liu M, Abe H, Miyauchi M. Nanophase-Separated Copper-Zirconia Composites for Bifunctional Electrochemical CO 2 Conversion to Formic Acid. ACS Appl Mater Interfaces 2023; 15:23299-23305. [PMID: 37140359 DOI: 10.1021/acsami.3c02874] [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] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A copper-zirconia composite having an evenly distributed lamellar texture, Cu#ZrO2, was synthesized by promoting nanophase separation of the Cu51Zr14 alloy precursor in a mixture of carbon monoxide (CO) and oxygen (O2). High-resolution electron microscopy revealed that the material consists of interchangeable Cu and t-ZrO2 phases with an average thickness of 5 nm. Cu#ZrO2 exhibited enhanced selectivity toward the generation of formic acid (HCOOH) by electrochemical reduction of carbon dioxide (CO2) in aqueous media at a Faradaic efficiency of 83.5% at -0.9 V versus the reversible hydrogen electrode. In situ Raman spectroscopy has revealed that a bifunctional interplay between the Zr4+ sites and the Cu boundary leads to amended reaction selectivity along with a large number of catalytic sites.
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Affiliation(s)
- Anna Strijevskaya
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro, Tokyo, 152-8552, Japan
- Uzbek-Japan Innovation Center of Youth, Tashkent 100095, Uzbekistan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro, Tokyo, 152-8552, Japan
| | - Shusaku Shoji
- Department of Materials Science & Engineering, Cornell University, Ithaca, New York, 14853-1501, United States
| | - Shigenori Ueda
- National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
| | - Ayako Hashimoto
- National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan
| | - Yu Wen
- National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan
| | - Aufandra Cakra Wardhana
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro, Tokyo, 152-8552, Japan
| | - Ji-Eun Lee
- Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan
| | - Min Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, School of Physical and Electronics, Central South University, Changsha 410083, Public Republic of China
| | - Hideki Abe
- National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
- Graduate School of Science and Technology, Saitama University, Saitama 338-8570, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro, Tokyo, 152-8552, Japan
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10
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Wardhana AC, Yamaguchi A, Adachi K, Hashizume D, Miyauchi M. Direct Interfacial Excitation from TiO 2 to Cu(II) Nanoclusters Enables Cathodic Photoresponse for Hydrogen Evolution under Visible-Light Irradiation. Small 2023; 19:e2206893. [PMID: 36808827 DOI: 10.1002/smll.202206893] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Indexed: 05/18/2023]
Abstract
The titanium dioxide (TiO2 ) photocatalyst is only active under UV irradiation due to its wide-gap nature. A novel excitation pathway denoted as interfacial charge transfer (IFCT) has been reported to activate copper(II) oxide nanoclusters-loaded TiO2 powder (Cu(II)/TiO2 ) under visible-light irradiation for only organic decomposition (downhill reaction) so far. Here, the photoelectrochemical study shows that the Cu(II)/TiO2 electrode exhibits a cathodic photoresponse under visible-light and UV irradiation. It originates from H2 evolution on the Cu(II)/TiO2 electrode, while O2 evolution takes place on the anodic side. Based on the concept of IFCT, a direct excitation of electrons from the valence band of TiO2 to Cu(II) clusters initiates the reaction. This is the first demonstration of a direct interfacial excitation-induced cathodic photoresponse for water splitting without any addition of a sacrificial agent. This study is expected to contribute to the development of abundant visible-light-active photocathode materials for fuel production (uphill reaction).
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Affiliation(s)
- Aufandra C Wardhana
- Department of Materials Science and Engineering, Tokyo Institute of Technology, S7-9, 2-12-1 Ookayama, Meguro City, Tokyo, 152-8552, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, S7-9, 2-12-1 Ookayama, Meguro City, Tokyo, 152-8552, Japan
| | - Kiyohiro Adachi
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, S7-9, 2-12-1 Ookayama, Meguro City, Tokyo, 152-8552, Japan
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11
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Liu YS, Yamaguchi A, Yang Y, Aisnada ANE, Uchida S, Abe H, Ueda S, Yamaguchi K, Tanabe T, Miyauchi M. Synthesis and Characterization of the Orthorhombic Sn 3 O 4 Polymorph. Angew Chem Int Ed Engl 2023; 62:e202300640. [PMID: 36914572 DOI: 10.1002/anie.202300640] [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: 01/13/2023] [Revised: 02/12/2023] [Accepted: 02/13/2023] [Indexed: 03/16/2023]
Abstract
An unexplored tin oxide crystal phase (Sn3 O4 ) was experimentally synthesized via a facile hydrothermal method. After tuning the often-neglected parameters for the hydrothermal synthesis, namely the degree of filling of the precursor solution and the gas composition in the reactor head space, an unreported X-ray diffraction pattern was discovered. Through various characterization studies, such as Rietveld analysis, energy dispersive X-ray spectroscopy, and first-principles calculations, this novel material was characterized as orthorhombic mixed-valence tin oxide with the composition SnII 2 SnIV O4 . This orthorhombic tin oxide is a new polymorph of Sn3 O4 , which differs from the reported conventional monoclinic structure. Computational and experimental analyses showed that orthorhombic Sn3 O4 has a smaller band gap (2.0 eV), enabling greater absorption of visible light. This study is expected to improve the accuracy of hydrothermal synthesis and aid the discovery of new oxide materials.
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Affiliation(s)
- Yang-Shin Liu
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Yue Yang
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - An Niza El Aisnada
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Sho Uchida
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Hideki Abe
- Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Shigenori Ueda
- Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo, Hyogo, 679-5148, Japan
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Kenji Yamaguchi
- Innovation Center, Mitsubishi Materials Corporation, 1002-14, Mukohyama, Naka, Ibaraki, 311-0102, Japan
| | - Toyokazu Tanabe
- Department of Materials Science and Engineering, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa, 239-0811, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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12
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Liu YS, Yamaguchi A, Yang Y, El Aisnada AN, Uchida S, Abe H, Ueda S, Yamaguchi K, Tanabe T, Miyauchi M. Synthesis and Characterization of the Orthorhombic Sn3O4 Polymorph. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202300640] [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: 03/18/2023]
Affiliation(s)
- Yang-Shin Liu
- Tokyo Institute of Technology - Ookayama Campus: Tokyo Kogyo Daigaku Department of Materials Science and Engineering JAPAN
| | - Akira Yamaguchi
- Tokyo Institute of Technology - Ookayama Campus: Tokyo Kogyo Daigaku Department of Materials Science and Engineering JAPAN
| | - Yue Yang
- Tokyo Institute of Technology - Ookayama Campus: Tokyo Kogyo Daigaku Department of Materials Science and Engineering JAPAN
| | - An Niza El Aisnada
- Tokyo Institute of Technology - Ookayama Campus: Tokyo Kogyo Daigaku Department of Materials Science and Engineering JAPAN
| | - Sho Uchida
- Tokyo Institute of Technology - Ookayama Campus: Tokyo Kogyo Daigaku Department of Materials Science and Engineering JAPAN
| | - Hideki Abe
- National Institute for Materials Science: Busshitsu Zairyo Kenkyu Kiko Center for Green Research on Energy and Environmental Materials JAPAN
| | - Shigenori Ueda
- National Institute for Materials Science: Busshitsu Zairyo Kenkyu Kiko Research Center for Functional Materials JAPAN
| | | | - Toyokazu Tanabe
- National Defense Academy: Boei Daigakko Department of Materials Science and Engineering JAPAN
| | - Masahiro Miyauchi
- Tokyo Institute of Technology - Ookayama Campus: Tokyo Kogyo Daigaku Department of Materials Science and Engineering 2-12-1 OokayamaMeguro-ku 152-8552 Tokyo JAPAN
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13
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Sugawara S, Fujiya W, Kagi H, Yamaguchi A, Hashizume K. Heat-Induced Dolomitization of Amorphous Calcium Magnesium Carbonate in a CO 2-Filled Closed System. ACS Omega 2022; 7:44670-44676. [PMID: 36530237 PMCID: PMC9753508 DOI: 10.1021/acsomega.2c03258] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 11/09/2022] [Indexed: 06/17/2023]
Abstract
We report a method to synthesize dolomite [CaMg(CO3)2] from amorphous calcium magnesium carbonate (ACMC) via solid-state transformation. When ACMC is heated in air, it does not crystallize into dolomite but decomposes into Mg calcite, magnesium oxide, and CO2. Hence, we heated ACMC in a closed system filled with CO2 gas (pCO2 >1.2 bar at 420 °C) and produced submicron-sized dolomite. Single-phase dolomite was obtained after dissolving impurities in the run products, such as northupite [Na3Mg(CO3)2Cl] and eitelite [Na2Mg(CO3)2], in water. Also, we investigated the crystallization process of dolomite by changing the heating temperature and heating time. Despite crystallization by solid-state transformation, the heated samples crystallized to dolomite via Ca-rich protodolomite with no ordering reflection of X-ray diffraction as previously observed for hydrothermal synthesis. The results demonstrated that this crystallization pathway is kinetically favored even in solid-state transformation and that the Ca-rich protodolomite phase preferentially crystallizes during heating, leading to phase separation from the amorphous phase. Therefore, the crystallization process via protodolomite as a precursor is a common mechanism in dolomite crystallization, suggesting the presence of kinetic barriers other than hydration of cations.
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Affiliation(s)
- Shingo Sugawara
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Wataru Fujiya
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Hiroyuki Kagi
- Geochemical
Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
| | - Akira Yamaguchi
- National
Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Ko Hashizume
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
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14
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Yang Y, Toyoda M, Yamaguchi A, Cho Y, El Aisnada AN, Abe H, Ueda S, Okunaka S, Saito S, Liu M, Tokudome H, Miyauchi M. Bandgap widening through doping for improving the photocatalytic oxidation ability of narrow-bandgap semiconductors. Phys Chem Chem Phys 2022; 25:255-261. [PMID: 36477553 DOI: 10.1039/d2cp02994d] [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: 11/17/2022]
Abstract
The trade-off relationship between narrowing the bandgap and achieving sufficient redox potentials accounts for the hindrance to the development of an efficient photocatalyst. Most of the previous researchers attempt to narrow the bandgap of semiconductors by impurity doping to achieve visible-light sensitivity, but this approach causes the losses of their oxidation and/or reduction ability. Conversely, this study presents a bandgap widening strategy by doping to improve the redox potential of photogenerated carriers. Employing first-principles simulations, we propose the lanthanum-doped bismuth vanadate (La-BiVO4) photocatalyst as a wider-bandgap semiconductor exhibiting stronger oxidation ability compared to pristine BiVO4, and the results revealed that the bismuth orbital in the valence band (VB) was diluted by lanthanum-ion doping, while the VB shifted to a higher potential (positively shifted). Thereafter, a La-BiVO4 powder was synthesized via a solid-state reaction, after which its activity was evaluated in the photocatalytic oxidation of 2-propanol (IPA). La-BiVO4 exhibited bandgap widening; thus, the number of absorbed photons under visible-light irradiation was lower than that of pristine BiVO4. However, the quantum efficiency (QE) of La-BiVO4 for the oxidation of IPA was higher than that of the pristine BiVO4. Consequently, the photocatalytic reaction rate of La-BiVO4 was superior to that of pristine BiVO4 under the same visible-light irradiation conditions. Although the bandgap of La-BiVO4 is widened, it is still sensitive to the cyan-light region, which is the strongest in the sunlight spectrum. These results demonstrate that the orbital dilution strategy by impurity elemental doping is effective for bandgap widening and contributes to improving the oxidation and/or reduction ability of the photogenerated charge carriers. This study elucidates the possibility of boosting photocatalytic performances via bandgap widening.
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Affiliation(s)
- Yue Yang
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan.
| | - Masayuki Toyoda
- Department of Physics, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan.
| | - Yohei Cho
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan.
| | - An Niza El Aisnada
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan.
| | - Hideki Abe
- Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Shigenori Ueda
- Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan.,Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.,Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Sayuri Okunaka
- Global Zero Emission Research Center (GZR), National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki, 305-8559, Japan
| | - Susumu Saito
- Department of Physics, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan.,Advanced Research Center for Quantum Physics and Nanoscience, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.,Materials Research Center for Element Strategy, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Min Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, School of Physical and Electronics, Central South University, Changsha, P. R. China
| | - Hiromasa Tokudome
- Research Institute, TOTO Ltd, 2-8-2 Honson, Chigasaki, Kanagawa 253-8577, Japan.
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan.
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15
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Yamaguchi A, Ishii A, Kamijo T. Influence of ionic strength and temperature on adsorption of tetrakis-N-methylpyridyl porphyrin onto mesoporous silica. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Yamaguchi A, Kato H, Matsubara M, Mathis BJ, Hiramatsu Y. Arterial switch operation with coronary button extension and neo-pulmonary trunk realignment for a rare coronary pattern. J Card Surg 2022; 37:5616-5618. [PMID: 36378943 DOI: 10.1111/jocs.17188] [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: 09/19/2022] [Accepted: 10/29/2022] [Indexed: 11/16/2022]
Abstract
Coronary anatomy is key for arterial switch operations as reimplantation for coronary artery patterns originating from the same sinus is often challenging. We experienced an extremely rare coronary artery anatomy case (Leiden convention: 1 R, 1LCx) and successfully performed an arterial switch operation with coronary button extension and neo-pulmonary trunk realignment maneuver.
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Affiliation(s)
- Akira Yamaguchi
- Division of Cardiovascular Surgery, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hideyuki Kato
- Division of Cardiovascular Surgery, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Muneaki Matsubara
- Division of Cardiovascular Surgery, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Bryan J Mathis
- Division of Cardiovascular Surgery, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yuji Hiramatsu
- Division of Cardiovascular Surgery, University of Tsukuba, Tsukuba, Ibaraki, Japan
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17
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Aizawa M, Iwase H, Kamijo T, Yamaguchi A. Protein Condensation at Nanopore Entrances as Studied by Differential Scanning Calorimetry and Small-Angle Neutron Scattering. J Phys Chem Lett 2022; 13:8684-8691. [PMID: 36094403 DOI: 10.1021/acs.jpclett.2c01708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The condensation of globular myoglobin (Mb) at the pore entrances of mesoporous silica (MPS) with a series of pore diameters (4.2, 6.4, 7.7, and 9.0 nm) was examined by differential scanning calorimetry (DSC) and contrast-matching small-angle neutron scattering (CM-SANS) experiments. The DSC measurements were performed to estimate the amount of Mb adsorbed at two different adsorption sites, namely, the pore interior and the pore entrance regions. The CM-SANS measurements were conducted to observe condensation of Mb molecules at the pore entrance regions. Notably, the nanopore entrance with a diameter close to twice that of the Mb diameter was found to be the specific cavity to facilitate the condensation of globular Mb. The Mb condensation occurred at the entrances of the 6.4 nm pore during the adsorption uptake from concentrated Mb solutions, whereas the adsorption uptake from diluted Mb solutions induced the condensation of Mb at the entrances of the 7.7 nm pore.
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Affiliation(s)
- Mami Aizawa
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Hiroki Iwase
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - Toshio Kamijo
- Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
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18
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Kubo K, Jang S, Takata T, Yamaguchi A. Dynamic probabilistic risk assessment of seismic-induced flooding in pressurized water reactor by seismic, flooding, and thermal-hydraulics simulations. J NUCL SCI TECHNOL 2022. [DOI: 10.1080/00223131.2022.2100837] [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: 10/15/2022]
Affiliation(s)
- Kotaro Kubo
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Sunghyon Jang
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
| | - Takashi Takata
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
| | - Akira Yamaguchi
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
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19
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Yagami K, Uyama Y, Yoshizawa Y, Kakut S, Yamaguchi A, Nagumo M. Retraction notice to "A human chondrogenic cell line retains multi-potency that differentiates into osteoblasts and adipocytes" [Bone 34(4) (2018) 648-655]. Bone 2022; 161:116428. [PMID: 35570102 DOI: 10.1016/j.bone.2022.116428] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Kimitoshi Yagami
- Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Yohei Uyama
- Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Yasumasa Yoshizawa
- Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Saburo Kakut
- Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Akira Yamaguchi
- Division of Oral Pathology and Bone Metabolism, Department of Developmental and Reconstructive Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Masao Nagumo
- Second Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
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20
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Morita M, Miyamura M, Yamaguchi A, Sakamoto T. Analysis of individual matrix particles in the Allende meteorite by high-resolution FIB-TOF-SIMS. ANAL SCI 2022; 38:1039-1046. [PMID: 35751002 DOI: 10.1007/s44211-022-00124-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/02/2022] [Indexed: 11/26/2022]
Abstract
The matrix in the "Allende meteorite" was analyzed by high-spatial-resolution focused ion beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS), and consisted of fine grains with sizes of several micrometers. It is difficult to analyze the matrix particles individually. As FIB-TOF-SIMS has a high spatial resolution, it can analyze the matrix individually. In addition, if the sample can be smoothed, no other pretreatment is required. By this method, it was clarified that Al, Cr, etc., which were conventionally detected as trace components in mass spectra, existed as fine particles between the matrix particles, rather than as impurities within them. The Al-rich particles did not match the minerals already found in the Allende meteorite matrix. Although the identity of the aluminum-rich particles has not been clarified, the abundance and localization could be observed correctly. Al-rich particles are likely to be affected by metamorphism and have important information to clarify the metamorphism process.
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Affiliation(s)
- Masato Morita
- Department of Applied Physics, Kogakuin University, 2665-1 Nakano-machi, Hachioji, Tokyo, 192-0015, Japan
| | - Masatoshi Miyamura
- Department of Applied Physics, Kogakuin University, 2665-1 Nakano-machi, Hachioji, Tokyo, 192-0015, Japan
| | - Akira Yamaguchi
- National Institute of Polar Research, Tachikawa, Tokyo, 190-8518, Japan
| | - Tetsuo Sakamoto
- Department of Applied Physics, Kogakuin University, 2665-1 Nakano-machi, Hachioji, Tokyo, 192-0015, Japan.
- Graduate School of Electrical Engineering and Electronics, Kogakuin University, 2665-1 Nakano-machi, Hachioji, Tokyo, 192-0015, Japan.
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21
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Yamaguchi A, Sakamoto H, Mathis B, Watanabe Y, Kato H, Hiramatsu Y. Right Ventricular Outflow Tract Myxoma with Absent Pulmonary Valve. Heart Surg Forum 2022; 25:E459-E461. [DOI: 10.1532/hsf.4741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 04/05/2022] [Indexed: 11/20/2022]
Abstract
Myxoma is the most common benign cardiac tumor. Absent pulmonary valves, often treated surgically in childhood, are associated with 3-6% of tetralogy of Fallot. It is unusual for absent pulmonary valves without other congenital heart diseases to be asymptomatic until adulthood. Here, we report the unique case of an 80-year-old female with right ventricular outflow tract myxoma and absent pulmonary valve that has, to our knowledge, never been reported. We successfully performed a simple mass resection and pulmonary valve implantation.
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22
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Chuong TT, Ogura T, Hiyoshi N, Takahashi K, Lee S, Hiraga K, Iwase H, Yamaguchi A, Kamagata K, Mano E, Hamakawa S, Nishihara H, Kyotani T, Stucky GD, Itoh T. Giant Carbon Nano-Test Tubes as Versatile Imaging Vessels for High-Resolution and In Situ Observation of Proteins. ACS Appl Mater Interfaces 2022; 14:26507-26516. [PMID: 35548999 DOI: 10.1021/acsami.2c06318] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cryogenic electron microscopy is one of the fastest and most robust methods for capturing high-resolution images of proteins, but stringent sample preparation, imaging conditions, and in situ radiation damage inflicted during data acquisition directly affect the resolution and ability to capture dynamic details, thereby limiting its broader utilization and adoption for protein studies. We addressed these drawbacks by introducing synthesized giant carbon nano-test tubes (GCNTTs) as radiation-insulating materials that lessen the irradiation impact on the protein during data acquisition, physical molecular concentrators that localize the proteins within a nanoscale field of view, and vessels that create a microenvironment for solution-phase imaging. High-resolution electron microscopy images of single and aggregated hemoglobin molecules within GCNTTs in both solid and solution states were acquired. Subsequent scanning transmission electron microscopy, small-angle neutron scattering, and fluorescence studies demonstrated that the GCNTT vessel protected the hemoglobin molecules from electron irradiation-, light-, or heat-induced denaturation. To demonstrate the robustness of GCNTT as an imaging platform that could potentially augment the study of proteins, we demonstrated the robustness of the GCNTT technique to image an alternative protein, d-fructose dehydrogenase, after cyclic voltammetry experiments to review encapsulation and binding insights. Given the simplicity of the material synthesis, sample preparation, and imaging technique, GCNTT is a promising imaging companion for high-resolution, single, and dynamic protein studies under electron microscopy.
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Affiliation(s)
- Tracy T Chuong
- National Institute of Advanced Industrial Science Technology (AIST), Sendai 983-8551, Japan
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106-9510, United States
| | - Toshihiko Ogura
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8566, Japan
| | - Norihito Hiyoshi
- National Institute of Advanced Industrial Science Technology (AIST), Sendai 983-8551, Japan
| | - Kazuma Takahashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Sangho Lee
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Keita Hiraga
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Hiroki Iwase
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, Mito, Ibaraki 310-8512, Japan
| | - Kiyoto Kamagata
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Eriko Mano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Satoshi Hamakawa
- National Institute of Advanced Industrial Science Technology (AIST), Sendai 983-8551, Japan
| | - Hirotomo Nishihara
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan
| | - Takashi Kyotani
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Galen D Stucky
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106-9510, United States
| | - Tetsuji Itoh
- National Institute of Advanced Industrial Science Technology (AIST), Sendai 983-8551, Japan
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23
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Kanesaka A, Nishimura Y, Yamaguchi A, Imai Y, Mizokuro T, Nishikawa H. Solid-State Photophysical Properties of Chiral Perylene Diimide Derivatives: AIEnh-Circularly Polarized Luminescence from Vacuum-Deposited Thin Films. BCSJ 2022. [DOI: 10.1246/bcsj.20220020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Aoba Kanesaka
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-88512, Japan
| | - Yuki Nishimura
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-88512, Japan
| | - Akira Yamaguchi
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-88512, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Toshiko Mizokuro
- RIAEP, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Hiroyuki Nishikawa
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-88512, Japan
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Mitomo K, Yamaguchi A, Muramatsu T. Hypoplasia of medial pterygoid process in sphenoid bone relates to decreased mesenchymal cell proliferation in the Runx2-haploinsufficient cleidocranial dysplasia mouse model. Arch Oral Biol 2022; 135:105358. [DOI: 10.1016/j.archoralbio.2022.105358] [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] [Received: 11/17/2021] [Revised: 12/23/2021] [Accepted: 01/21/2022] [Indexed: 11/27/2022]
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25
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Umezawa Y, Toyoshima K, Saitoh Y, Takeda S, Tamura K, Tamaya C, Yamaguchi A, Yoshimizu C, Tayasu I, Kawamoto K. Evaluation of origin-depended nitrogen input through atmospheric deposition and its effect on primary production in coastal areas of western Kyusyu, Japan. Environ Pollut 2021; 291:118034. [PMID: 34563851 DOI: 10.1016/j.envpol.2021.118034] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/07/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Long term monitoring of atmospheric wet and dry depositions and associated nutrients fluxes was conducted on the coast of Japan facing the East China Sea continuously for 1 year and 2 months, with the origin of air mass investigated based on isotope analyses (Sr, Nd, and NO3). During the same period, intensive observations of ocean conditions and the chemical composition of sinking particles collected using sediment traps were conducted to investigate the effects of atmospheric deposition-derived nutrients on phytoplankton blooms. Dry-deposition-derived nutrient inputs to the surface ocean were larger during autumn to spring than in summer due to the effect of continental air mass occasionally carrying Asian dust (yellow sand). However, these nutrients fluxes were limited (1.1-1.5 mg-N m-2 day-1 on average) and didn't appear to cause phytoplankton blooms through the year. Although average dissolved inorganic nitrogen (DIN) concentrations in rainwater were lower in oceanic air masses compared to continental air masses, wet-deposition-derived nutrient inputs to the surface ocean on rainy days during the summer (26.0 mg-N m-2 day-1 on average) were large due to higher precipitation from oceanic air masses. Wet-deposition-derived nutrients significantly increased nutrient concentrations in the surface ocean and seemed to cause phytoplankton blooms in the warm rainy season when nutrients in the surface were depleted due to increased stratification. The increase in phytoplankton biomass was reflected in increased particle sinking into the bottom layer, as well as changing chemical characteristics. The supply of flesh phytoplankton-derived labile organic matter into the bottom layer could be expected to promote rapid bacterial decomposition and contribute to the formation of hypoxic water masses in early summer when the ocean was strongly stratified. Atmospheric deposition-derived nutrients in East Asia will have important impacts on not only the oligotrophic outer ocean but also surrounding coastal areas in the warm rainy season.
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Affiliation(s)
- Yu Umezawa
- Department of Environmental Science on Biosphere, Tokyo University of Agriculture and Technology, Saiwai-cho, Fuchu, Tokyo, 183-8509, Japan.
| | - Kanae Toyoshima
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Yu Saitoh
- Department of Earth Sciences, Resources and Environmental Engineering, Waseda University, Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
| | - Shigenobu Takeda
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan.
| | - Kei Tamura
- Pharmaceutical Administration Office, Nagasaki Prefectural Government, Onoue-machi, Nagasaki, 850-8570, Japan.
| | - Chiaki Tamaya
- Seihi Healthcare Office, Nagasaki Prefectural Government, Nameshi, Nagasaki, 852-8061, Japan.
| | - Akira Yamaguchi
- Fisheries Technology Institute, Japan Fisheries Research and Education Agency, Taira-machi, Nagasaki, 851-2213, Japan.
| | - Chikage Yoshimizu
- Research Institute for Humanity and Nature, Motoyama, Kamigamo, Kyoto, 603-8047, Japan.
| | - Ichiro Tayasu
- Research Institute for Humanity and Nature, Motoyama, Kamigamo, Kyoto, 603-8047, Japan.
| | - Kazuaki Kawamoto
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan.
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Hirabayashi T, Yasuhara S, Shoji S, Yamaguchi A, Abe H, Ueda S, Zhu H, Kondo T, Miyauchi M. Fabrication of Hydrogen Boride Thin Film by Ion Exchange in MgB 2. Molecules 2021; 26:molecules26206212. [PMID: 34684790 PMCID: PMC8540303 DOI: 10.3390/molecules26206212] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/04/2021] [Accepted: 10/09/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, hydrogen boride films are fabricated by ion-exchange treatment on magnesium diboride (MgB2) films under ambient temperature and pressure. We prepared oriented MgB2 films on strontium titanate (SrTiO3) substrates using pulsed laser deposition (PLD). Subsequently, these films were treated with ion exchangers in acetonitrile solution. TOF-SIMS analysis evidenced that hydrogen species were introduced into the MgB2 films by using two types of ion exchangers: proton exchange resin and formic acid. According to the HAXPES analysis, negatively charged boron species were preserved in the films after the ion-exchange treatment. In addition, the FT-IR analysis suggested that B-H bonds were formed in the MgB2 films following the ion-exchange treatment. The ion-exchange treatment using formic acid was more efficient compared to the resin treatment; with respect to the amount of hydrogen species introduced into the MgB2 films. These ion-exchanged films exhibited photoinduced hydrogen release as observed in a powder sample. Based on the present study, we expect to be able to control the morphology and hydrogen content of hydrogen boride thin films by optimising the ion-exchange treatment process, which will be useful for further studies and device applications.
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Affiliation(s)
- T. Hirabayashi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan; (T.H.); (S.Y.); (S.S.); (A.Y.)
- Department of Mechanical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
| | - S. Yasuhara
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan; (T.H.); (S.Y.); (S.S.); (A.Y.)
| | - S. Shoji
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan; (T.H.); (S.Y.); (S.S.); (A.Y.)
- Department of Materials Science & Engineering, Cornell University, Ithaca, NY 14853, USA
| | - A. Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan; (T.H.); (S.Y.); (S.S.); (A.Y.)
| | - H. Abe
- Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan;
| | - S. Ueda
- Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, Hyogo 679-5148, Japan;
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, Tsukuba 305-0047, Japan
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan
| | - H. Zhu
- Department of Mechanical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
| | - T. Kondo
- Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama 226-8503, Japan
- Correspondence: (T.K.); (M.M.)
| | - M. Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan; (T.H.); (S.Y.); (S.S.); (A.Y.)
- Correspondence: (T.K.); (M.M.)
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Kubo K, Jang S, Takashi T, Yamaguchi A. Quasi-Monte Carlo sampling method for simulation-based dynamic probabilistic risk assessment of nuclear power plants. J NUCL SCI TECHNOL 2021. [DOI: 10.1080/00223131.2021.1971119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Kotaro Kubo
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo, Japan
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Sunghyon Jang
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Takata Takashi
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Akira Yamaguchi
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo, Japan
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28
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Abstract
A nanoporous material has been applied for the development of functional nanobiomaterials by utilizing its uniform pore structure and large adsorption capacity. The structure and stability of biomacromolecules, such as peptide, oligonucleotide, and protein, are primary factors to govern the performance of nanobiomaterials, so that their direct characterization methodologies are in progress. In this review, we focus on recent topics in the structural characterization of protein molecules adsorbed at a nanoporous material with uniform meso-sized pores. The thermal stabilities of the adsorbed proteins are also summarized to discuss whether the structure of the adsorbed protein molecules can be stabilized or not.
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Affiliation(s)
- Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1, Bunkyo, Mito, Ibaraki, 310-8512, Japan.
| | - Masahiro Saiga
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1, Bunkyo, Mito, Ibaraki, 310-8512, Japan
| | - Daiki Inaba
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1, Bunkyo, Mito, Ibaraki, 310-8512, Japan
| | - Mami Aizawa
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1, Bunkyo, Mito, Ibaraki, 310-8512, Japan
| | - Yuta Shibuya
- New Industry Creation Hatchery Center, Tohoku University, 2-1-1 Katahira, Aoba, Sendai, 980-8577, Japan
| | - Tetsuji Itoh
- National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino, Sendai, 983-8551, Japan
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29
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Aoki K, Matsunaga S, Ito S, Shibahara T, Nomura T, Matsuzaki H, Abe S, Yamaguchi A. Persistent bone resorption lacunae on necrotic bone distinguish bisphosphonate-related osteonecrosis of jaw from denosumab-related osteonecrosis. J Bone Miner Metab 2021; 39:737-747. [PMID: 33830351 DOI: 10.1007/s00774-021-01223-4] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 03/14/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Bisphosphonate and denosumab are widely used for the treatment of osteoporosis and bone metastasis of cancer to prevent excessive bone resorption. Osteonecrosis of the jaw is a serious adverse effect of bisphosphonate or denosumab referred to as bisphosphonate-related osteonecrosis of the jaw (BRONJ) or denosumab-related osteonecrosis of the jaw (DRONJ), respectively. Since bisphosphonate and denosumab inhibit bone resorption by different mechanism, we evaluated whether these drug types result in different histopathological characteristics related to bone resorption. MATERIALS AND METHODS We histopathologically investigated 10 cases of BRONJ, DRONJ, and suppurative osteomyelitis. Paraffin sections prepared from decalcified dissected jaw bones were used for histopathological observation, second harmonic generation imaging, and bone histomorphometry. The samples were also observed by a scanning electron microscope. RESULTS Numerous bone resorption lacunae were observed on the necrotic bone surface in almost all cases of BRONJ; however, such resorption lacunae were limited in DRONJ and suppurative osteomyelitis. Prominent bone resorption lacunae were also confirmed by second harmonic generation imaging and scanning electron microscopy in BRONJ, but not in DRONJ or suppurative osteomyelitis. As determined by bone histomorphometry, the number of bone resorption lacunae and the length of the erosion surface of resorption lacunae were significantly higher in BRONJ group than in the DRONJ and suppurative osteomyelitis groups. These parameters were correlated between the necrotic bones and the vital bones in BRONJ. CONCLUSIONS Persistent bone resorption lacunae on the necrotic bone surface are unique to BRONJ, providing a basis for distinguishing BRONJ from DRONJ and OM in histopathological diagnosis.
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Affiliation(s)
- Kazumitsu Aoki
- Department of Anatomy, Tokyo Dental College, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
- Department of Dentistry and Oral Surgery, Tokyo Metropolitan Bokutoh Hospital, 4-23-15 kotobashi, Sumida-ku, Tokyo, 130-8675, Japan
| | - Satoru Matsunaga
- Department of Anatomy, Tokyo Dental College, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
- Tokyo Dental College Research Branding Project, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Shinichirou Ito
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Takahiko Shibahara
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Takeshi Nomura
- Tokyo Dental College Research Branding Project, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
- Department of Oral Oncology and Maxillofacial Surgery, Ichikawa General Hospital, Tokyo Dental College, 5-11-13 Sugano, Ichikawa city, Chiba, 272-8513, Japan
| | - Hideo Matsuzaki
- Department of Dentistry and Oral Surgery, Tokyo Metropolitan Bokutoh Hospital, 4-23-15 kotobashi, Sumida-ku, Tokyo, 130-8675, Japan
| | - Shinichi Abe
- Department of Anatomy, Tokyo Dental College, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
- Tokyo Dental College Research Branding Project, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Akira Yamaguchi
- Tokyo Dental College Research Branding Project, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan.
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kanda-Misaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan.
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30
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Zhu L, Lin Y, Liu K, Cortés E, Li H, Hu J, Yamaguchi A, Liu X, Miyauchi M, Fu J, Liu M. Tuning the intermediate reaction barriers by a CuPd catalyst to improve the selectivity of CO2 electroreduction to C2 products. Chinese Journal of Catalysis 2021. [DOI: 10.1016/s1872-2067(20)63754-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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31
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Tsuge Y, Yamaguchi A. Physiological characteristics of Corynebacterium glutamicum as a cell factory under anaerobic conditions. Appl Microbiol Biotechnol 2021; 105:6173-6181. [PMID: 34402937 DOI: 10.1007/s00253-021-11474-w] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/25/2022]
Abstract
Corynebacterium glutamicum, a gram-positive and facultative anaerobic bacterium, is widely used for the industrial production of amino acids, such as L-glutamate and L-lysine. C. glutamicum grows and produces amino acids under aerobic conditions. When restricted under anaerobic conditions, it produces organic acids, such as L-lactate and succinate, through metabolic shift. With the increasing threat of global warming, these organic acids have drawn considerable attention as bio-based plastic monomers. In addition to the organic acids, the anaerobic bioprocess is also used to produce other value-added compounds, including isobutanol, ethanol, 3-methyl-1-butanol, 2,3-butanediol, L-alanine, and L-valine. Therefore, C. glutamicum is now a versatile cell factory for producing a wide variety of useful chemicals under both aerobic and anaerobic conditions. The growth and metabolism of the bacterium depend on the oxygen levels, which modulate the rearrangement of the carbon flux by reprogramming gene expression patterns and intracellular redox states. Anaerobic cell growth and L-lysine production as well as aerobic succinate production have been demonstrated by engineering the metabolic pathways or supplying a terminal electron acceptor instead of oxygen. In this review, we discuss the physiological and metabolic changes in C. glutamicum associated with its application as a cell factory under different oxygen states. Physiological switching in bacteria is initiated with the sensing of oxygen availability. While such a sensor has not been identified in C. glutamicum yet, the molecular mechanism for oxygen sensing in related bacteria is also discussed. KEY POINTS: • C. glutamicum produces a wide variety of useful compounds under anaerobic conditions. • C. glutamicum is a versatile cell factory under both aerobic and anaerobic conditions. • Metabolic fate can be overcome by engineering metabolic pathways.
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Affiliation(s)
- Yota Tsuge
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.
| | - Akira Yamaguchi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
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32
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Morita S, Moriishi T, Matsunaga S, Kitamura K, Abe SI, Yamaguchi A. Characteristic Distribution of Hematopoietic Cells in Bone Marrow of Xenopus Laevis. Bull Tokyo Dent Coll 2021; 62:171-180. [PMID: 34393144 DOI: 10.2209/tdcpublication.2020-0053] [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: 11/06/2022]
Abstract
Bone marrow is the principal site of hematopoiesis in mammals. Amphibians were the first phylogenetic group in vertebrates to acquire bone marrow, but the distribution of hematopoietic cells in the bone marrow of the primitive frog, Xenopus laevis (X. laevis) has not been well documented. The purpose of this study was to perform a histological investigation of the distribution of hematopoietic cells in femoral bone marrow at various stages of development in X. laevis. Hematopoietic cells showed preferential distribution on the endosteal surface of cortical bone throughout all stages of development, from tadpole to aged frog. In mature frogs, hematopoietic cells appeared at the boundary between the epiphysis and the bone marrow. The distribution of hematopoietic cells around the blood vessels was limited to a small number of vessels in the bone marrow. Abundant adipose tissue was observed in the bone marrow cavity from the tadpole stage to the mature frog stage. Hematopoietic cells showed preferential distribution in a belt-like fashion on the surface of newly-formed bones in a bone regeneration model in the diaphysis of X. laevis. These results indicate that the distribution of hematopoietic cells in bone marrow in X. laevis differs from that in mammals, and that the bone marrow of X. laevis constitutes a useful model for exploring the mechanism underlying the phylogenetic differentiation of bone marrow hematopoiesis.
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Affiliation(s)
| | - Takeshi Moriishi
- Department of Cell Biology, Nagasaki University Graduate School of Biomedical Sciences
| | - Satoru Matsunaga
- Department of Anatomy, Tokyo Dental College.,Tokyo Dental College Research Branding Project, Tokyo Dental College
| | - Kei Kitamura
- Tokyo Dental College Research Branding Project, Tokyo Dental College.,Department of Histology and Developmental Biology, Tokyo Dental College
| | - Shin-Ichi Abe
- Department of Anatomy, Tokyo Dental College.,Tokyo Dental College Research Branding Project, Tokyo Dental College
| | - Akira Yamaguchi
- Tokyo Dental College Research Branding Project, Tokyo Dental College.,Oral Health Science Center, Tokyo Dental College
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33
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Lee JE, Yamaguchi A, Ooka H, Kazami T, Miyauchi M, Kitadai N, Nakamura R. In situ FTIR study of CO 2 reduction on inorganic analogues of carbon monoxide dehydrogenase. Chem Commun (Camb) 2021; 57:3267-3270. [PMID: 33650585 DOI: 10.1039/d0cc07318k] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The CO2-to-CO reduction by carbon monoxide dehydrogenase (CODH) with a [NiFe4S4] cluster is considered to be the oldest pathway of biological carbon fixation and therefore may have been involved in the origin of life. Although previous studies have investigated CO2 reduction by Fe and Ni sulfides to identify the prebiotic origin of the [NiFe4S4] cluster, the reaction mechanism remains largely elusive. Herein, we applied in situ electrochemical ATR-FTIR spectroscopy to probe the reaction intermediates of greigite (Fe3S4) and violarite (FeNi2S4). Intermediate species assignable to surface-bound CO2 and formyl groups were found to be stabilized in the presence of Ni, lending insight into its role in enhancing the multistep CO2 reduction process.
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Affiliation(s)
- Ji-Eun Lee
- Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
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34
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Kujirai T, Yamaguchi A, Fujita T, Abe H, Miyauchi M. Active site separation of photocatalytic steam reforming of methane using a gas-phase photoelectrochemical system. Chem Commun (Camb) 2021; 57:8007-8010. [PMID: 34319340 DOI: 10.1039/d1cc02914b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Steam reforming of methane (SRM) requires high temperatures to be promoted, and the production of carbon dioxide from the side reaction has also become a problem. In this study, we separated the reaction sites for SRM to suppress CO2 generation using a gas-phase photoelectrochemical (GPEC) system with a cell coated with a Pt/YSZ powder catalyst on an oxygen ion-conductive YSZ pellet, where the reaction was assisted by light irradiation. As a result, SRM proceeded stoichiometrically and the production of CO2 was suppressed. We expect the findings obtained by the GPEC system will be useful in providing design guidelines for photocatalysts.
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Affiliation(s)
- Tomoki Kujirai
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Takeshi Fujita
- Department of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Hideki Abe
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
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35
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Yamaguchi A, Sako H, Miyauchi M. Synthesis of CaFe2O4 Nanorod Thin Film Using Molten Salt Method and Analysis of Its Photoelectrochemical Properties. CHEM LETT 2020. [DOI: 10.1246/cl.200558] [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]
Affiliation(s)
- Akira Yamaguchi
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hiroshi Sako
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Masahiro Miyauchi
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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36
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Abstract
In the present study, the adsorption of glucose oxidase (GOD) to a mesoporous aluminum oxide (MAO) film was examined with in-situ neutron reflectometry (NR) measurements. The MAO film was deposited on a cover glass slip and a Si disc, and its pore structure was characterized by X-ray reflectometry (XRR) and NR. The Si disc with MAO film was applied for an in-situ NR experiment, and its NR profiles before/after adsorption of GOD were continuously measured with a flow cell. The results indicated that the negatively-charged GOD molecules hardly penetrate into the narrow pore channel (pore diameter = ca. 10 nm) with opposite surface charge.
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Affiliation(s)
| | | | - Stephen A Holt
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation (ANSTO)
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37
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Kushida M, Yamaguchi A, Cho Y, Fujita T, Abe H, Miyauchi M. Gas‐Phase Photoelectrocatalysis Mediated by Oxygen Ions for Uphill Conversion of Greenhouse Gases. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000228] [Citation(s) in RCA: 5] [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: 01/22/2023]
Affiliation(s)
- Masaru Kushida
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Yohei Cho
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Takeshi Fujita
- Department of Environmental Science and Engineering Kochi University of Technology 185 Miyanokuchi, Tosayamada Kami Kochi 782-8502 Japan
| | - Hideki Abe
- National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8552 Japan
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Kawamura R, Yamaguchi A, Shimada C, Ishibiki R, Fujita T, Kondo T, Miyauchi M. Acid Assisted Synthesis of HB Sheets through Exfoliation of MgB 2 Bulk in Organic Media. CHEM LETT 2020. [DOI: 10.1246/cl.200203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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]
Affiliation(s)
- Reiya Kawamura
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Chika Shimada
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Ryota Ishibiki
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Takeshi Fujita
- School of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Takahiro Kondo
- Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Yamaguchi A, Kashimura C, Aizawa M, Shibuya Y. Differential Scanning Calorimetry Study on the Adsorption of Myoglobin at Mesoporous Silicas: Effects of Solution pH and Pore Size. ACS Omega 2020; 5:22993-23001. [PMID: 32954149 PMCID: PMC7495722 DOI: 10.1021/acsomega.0c02602] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
In the present study, pore adsorption behavior of globular myoglobin (Mb) at mesoporous silicas was examined utilizing the low-temperature differential scanning calorimetry (DSC) method. The DSC method relies on a decrease in heat of fusion for the pore water upon adsorption of Mb. The amount and structure of Mb adsorbed into the mesoporous silica were examined by DSC and optical absorption spectroscopy. The results indicated that the pore adsorption behavior of Mb strongly depended on the solution pH and pore size of mesoporous silica. For the adsorption of Mb (diameter = 3.5 nm) into mesoporous silica with narrow pores (pore diameter = 3.3 nm) at a pH ranging from 7.0 to 3.7, the penetration of both folded and denatured Mb molecules was confirmed. The folded Mb could penetrate into large mesoporous silica pores (pore diameter = 5.3 and 7.9 nm), whereas the penetration of the denatured Mb molecules was completely inhibited. The distribution of folded Mb at mesoporous silica depended on the pore size; almost all folded Mb molecules located inside mesoporous silica pores of diameters 3.3 and 5.3 nm, whereas the Mb molecules distributed at bot internal and external pore surfaces of mesoporous silica with 7.9 nm in pore diameter. These pore adsorption behaviors suggest that aggregation or stacking of the Mb molecules at the pore entrance regions of the large pores affected the pore adsorption behavior.
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Affiliation(s)
- Akira Yamaguchi
- Institute
of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Chiharu Kashimura
- Institute
of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Mami Aizawa
- Institute
of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Yuuta Shibuya
- New
Industry Creation Hatchery Center, Tohoku
University, Sendai 980-8577, Japan
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40
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Chen Y, Chen K, Fu J, Yamaguchi A, Li H, Pan H, Hu J, Miyauchi M, Liu M. Recent advances in the utilization of copper sulfide compounds for electrochemical CO2 reduction. Nano Materials Science 2020. [DOI: 10.1016/j.nanoms.2019.10.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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41
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Murai K, Sasaki D, Kobayashi S, Yamaguchi A, Uchikura H, Shirai T, Sasaki K, Kondo A, Tsuge Y. Optimal Ratio of Carbon Flux between Glycolysis and the Pentose Phosphate Pathway for Amino Acid Accumulation in Corynebacterium glutamicum. ACS Synth Biol 2020; 9:1615-1622. [PMID: 32602337 DOI: 10.1021/acssynbio.0c00181] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 01/26/2023]
Abstract
Glucose is metabolized through central metabolic pathways such as glycolysis and the pentose phosphate pathway (PPP) to synthesize downstream metabolites including amino acids. However, how the split ratio of carbon flux between glycolysis and PPP specifically affects the formation of downstream metabolites remains largely unclear. Here, we conducted a comprehensive metabolomic analysis to investigate the effect of the split ratio between glycolysis and the PPP on the intracellular concentration of amino acids and their derivatives in Corynebacterium glutamicum. The split ratio was varied by exchanging the promoter of a gene encoding glucose 6-phosphate isomerase (PGI). The ratio was correlated with the pgi transcription level and the enzyme activity. Concentrations of threonine and lysine-derivative 1,5-diaminopentane increased with an increase of the split ratio into the PPP. In contrast, concentrations of alanine, leucine, and valine were increased with an increase of the split ratio into glycolysis. These results could provide a new engineering target for improving the production of the amino acids and the derivatives.
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Affiliation(s)
- Katsuki Murai
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Daisuke Sasaki
- Graduate School of Science, Technology and Innovation, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Shunsuke Kobayashi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Akira Yamaguchi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Hiroto Uchikura
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Tomokazu Shirai
- Center for Sustainable Resource Science, RIKEN, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Kengo Sasaki
- Graduate School of Science, Technology and Innovation, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Akihiko Kondo
- Graduate School of Science, Technology and Innovation, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
- Center for Sustainable Resource Science, RIKEN, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Yota Tsuge
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
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42
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Misumi Y, Yamaguchi A, Zhang Z, Matsushita T, Wada N, Tsuchiizu M, Awaga K. Quantum Spin Liquid State in a Two-Dimensional Semiconductive Metal-Organic Framework. J Am Chem Soc 2020; 142:16513-16517. [PMID: 32623880 DOI: 10.1021/jacs.0c05472] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Two-dimensional metal-organic frameworks (2D MOFs) have attracted much attention, as they are the crystalline materials that exhibit both conductivity and microporosity. Numerous efforts have been made to advance their application as chemiresistive sensors or electrochemical capacitors. However, the intrinsic physical properties and spin states of these materials remain poorly understood. Most of these 2D MOFs possess a honeycomb lattice, with a Kagomé lattice arrangement of metal cations. These structural characteristics suggest that these MOFs would be candidates for geometrically frustrated spin systems with unprecedented magnetic phenomena. Herein, by performing magnetic susceptibility and specific heat measurements at an ultralow temperature down to 38mK on a 2D semiconductive MOF, Cu3(HHTP)2, a quantum spin liquid state that arises from the geometrical frustration was suggested. This result illustrates the potential of strongly correlated MOFs as systems with emergent phenomena induced by unusual structural topologies.
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Affiliation(s)
- Yuki Misumi
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Akira Yamaguchi
- Department of Material Science, Graduate School and Faculty of Science, University of Hyogo, Ako-gun, Hyogo 678-1297, Japan
| | - Zhongyue Zhang
- Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Taku Matsushita
- Department of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Nobuo Wada
- Department of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Masahisa Tsuchiizu
- Department of Physics, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Kunio Awaga
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan.,Integrated Research Consortium on Chemical Sciences, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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43
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Ito SI, Hirabayashi T, Ishibiki R, Kawamura R, Goto T, Fujita T, Yamaguchi A, Hosono H, Miyauchi M, Kondo T. Hydrogen Boride Sheets as Reductants and the Formation of Nanocomposites with Metal Nanoparticles. CHEM LETT 2020. [DOI: 10.1246/cl.200206] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shin-ichi Ito
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
- Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - Toru Hirabayashi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Ryota Ishibiki
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Reiya Kawamura
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Taiga Goto
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Takeshi Fujita
- School of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kochi 782-8502, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hideo Hosono
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Takahiro Kondo
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
- Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Sato M, Aoki H, Nakamura T, Onodera S, Yamaguchi A, Saito A, Azuma T. Effects of intermittent treatment with parathyroid hormone (PTH) on osteoblastic differentiation and mineralization of mouse induced pluripotent stem cells in a 3D culture model. J Periodontal Res 2020; 55:734-743. [PMID: 32583900 DOI: 10.1111/jre.12762] [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: 11/25/2019] [Revised: 04/10/2020] [Accepted: 04/24/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND/OBJECTIVES PTH plays an important role in bone remodeling, and different actions have been reported depending on its administration method. iPSCs are promising as a cell source for regeneration of periodontal tissue due to their ability of proliferation and pluripotency. However, the effects of PTH on iPSCs remain mostly unknown. The purpose of this study was to investigate in vitro effects of parathyroid hormone (PTH) on osteoblastic differentiation of induced pluripotent stem cells (iPSCs) in a 3D culture model. MATERIALS AND METHODS Following embryoid body (EB) induction from mouse iPSCs (miPSCs), dissociated cells (miPS-EB-derived cells) were seeded onto atelocollagen sponge (ACS) in osteoblast differentiation medium (OBM). Cell-ACS constructs were divided into three groups: continuous treatment with human recombinant PTH (1-34) (PTH-C), intermittent PTH treatment (PTH-I) or OBM control. To confirm the expression of PTH receptor-1(PTH1R), the expression of Pth1r and cAMP production over time were assessed. Real-time PCR was used to assess the expression of genes encoding osterix (Sp7), runt-related transcription factor 2 (Runx2), collagen type 1 (Col1a1), and osteocalcin (Bglap) at different time points. Mineralization was assessed by von Kossa staining. Histochemical staining was used to analyze alkaline phosphatase (ALP) activity, and immunolocalization of SP7 and BGLAP was analyzed by confocal laser scanning microscopy (CLSM). RESULTS On days 7 and 14, expression of the Pth1r in miPS-EB-derived cells was increased in all groups. Production of cAMP, the second messenger of the PTH1R, tended to increase in the PTH-I group compared with PTH-C group on day 14. Expression of Col1a1 in the PTH-I group on day 14 was significantly higher than other groups. There was a time-dependent increase in the expression of Sp7 in all groups. On day 14, the expression level of Sp7 in the PTH-I group was significantly higher than other groups. In von Kossa staining, the PTH-I group showed higher level of staining compared with other groups on day 14, whereas the level was slightly attenuated in the PTH-C group. In histochemical staining, ALP-positive cells were significantly increased in the PTH-I group compared with other groups on day 14. In CLSM analysis, the numbers of SP7- and BGLAP-positive cells showed a gradual increase over time, and on day 14, a significantly greater SP7 expression was observed in the PTH-I group than other groups. CONCLUSION These results suggested that the intermittent PTH treatment promotes osteoblastic differentiation and mineralization of miPSCs in the ACS scaffold.
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Affiliation(s)
- Masahiro Sato
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan
| | - Hideto Aoki
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Takashi Nakamura
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.,Department of Biochemistry, Tokyo Dental College, Tokyo, Japan
| | - Shoko Onodera
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.,Department of Biochemistry, Tokyo Dental College, Tokyo, Japan
| | - Akira Yamaguchi
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Atsushi Saito
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Toshifumi Azuma
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.,Department of Biochemistry, Tokyo Dental College, Tokyo, Japan
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Kaneko A, Matsumoto T, Iwabuchi H, Sato J, Wakamura T, Kiyota H, Tateda K, Hanaki H, Sakakibara N, Mizuno T, Miyajima H, Naito H, Takagi R, Kodama Y, Yamaguchi A, Akasiba R, Yamane N, Jinbu Y, Kusama M, Miyagi N, Kato R, Nakatogawa N, Izawa K, Tanzawa H, Kozu Y, Watanabe H, Matsumoto K, Shibahara T, Busujima Y, Takato T, Sakamoto H, Watanabe D, Kubota H, Sasaki J, Uematsu M, Sasaki M, Kaetsu A, Terasawa F, Yura Y, Iwai S, Morita S, Matsumoto K, Oonishi T, Komori T, Furudoi S, Fujibayashi J, Urade M, Kishimoto H, Yoshii T, Morihana T, Miyai D, Okamoto T, Kanda T, Okamoto K, Sakamoto A, Matsui Y, Miyake M, Sawai T, Ikebe T, Hashimoto K. Antimicrobial susceptibility surveillance of bacterial isolates recovered in Japan from odontogenic infections in 2013. J Infect Chemother 2020; 26:882-889. [PMID: 32591324 DOI: 10.1016/j.jiac.2020.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 05/05/2020] [Accepted: 05/21/2020] [Indexed: 11/25/2022]
Abstract
We report on the findings of the first antimicrobial susceptibility surveillance study in Japan of isolates recovered from odontogenic infections. Of the 38 facilities where patients representing the 4 groups of odontogenic infections were seen, 102 samples were collected from cases of periodontitis (group 1), 6 samples from pericoronitis (group 2), 84 samples from jaw inflammation (group 3) and 54 samples from phlegmon of the jaw bone area (group 4) for a total of 246 samples. The positivity rates of bacterial growth on culture were 85.3%, 100%, 84% and 88.9%, respectively, for groups 1, 2, 3 and 4. Streptococcus spp. isolation rates according to odontogenic infection group were 22% (group 1), 17.7% (group 3) and 20.7% (group 4). Anaerobic isolation rates were 66.9% (group 1), 71.8% (group 3) and 68.2% (group 4). Drug susceptibility tests were performed on 726 strains excluding 121 strains that were undergrown. The breakdown of the strains subjected to testing was 186 Streptococcus spp., 179 anaerobic gram-positive cocci, 246 Prevotella spp., 27 Porphyromonas spp., and 88 Fusobacterium spp. The isolates were tested against 30 antimicrobial agents. Sensitivities to penicillins and cephems were good except for Prevotella spp. The low sensitivities of Prevotella spp is due to β-lactamase production. Prevotella strains resistant to macrolides, quinolones, and clindamycin were found. No strains resistant to carbapenems or penems were found among all strains tested. No anaerobic bacterial strain was resistant to metronidazole. Antimicrobial susceptibility testing performed on the S. anginosus group and anaerobic bacteria, which are the major pathogens associated with odontogenic infections, showed low MIC90 values to the penicillins which are the first-line antimicrobial agents for odontogenic infections; however, for Prevotella spp., penicillins combined with β-lactamase inhibitor showed low MIC90 values.
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Affiliation(s)
- Akihiro Kaneko
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; Tokai University Hospital, Kanagawa, Japan.
| | - Tetsuya Matsumoto
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Hiroshi Iwabuchi
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; National Hospital Organization Tochigi Medical Center, Tochigi, Japan
| | - Junko Sato
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Tomotaro Wakamura
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Hiroshi Kiyota
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Kazuhiro Tateda
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Diseases (JAID) and The Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Hideaki Hanaki
- Infection Control Research Center, Kitasato University, Tokyo, Japan
| | - Noriyuki Sakakibara
- Department of Dentistry and Oral Surgery, Nikko Memorial Hospital, Hokkaido, Japan
| | - Takayuki Mizuno
- Department of Dentistry and Oral Surgery, Nikko Memorial Hospital, Hokkaido, Japan
| | | | | | - Ritsuo Takagi
- Niigata University Medical & Dental Hospital, Niigata, Japan
| | | | | | - Ryo Akasiba
- Nippon Dental University Niigata Hospital, Niigata, Japan
| | | | | | - Mikio Kusama
- Jichi Medical University Hospital, Tochigi, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Soichi Iwai
- Osaka University School of Dentistry, Osaka, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | - Taku Kanda
- Hiroshima University Hospital, Hiroshima, Japan
| | - Kosei Okamoto
- Hiroshima City Asa Citizens Hospital, Hiroshima, Japan
| | | | | | - Minoru Miyake
- Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Takashi Sawai
- Faculty of Medicine, Kagawa University, Kagawa, Japan
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Cho Y, Yamaguchi A, Uehara R, Yasuhara S, Hoshina T, Miyauchi M. Temperature dependence on bandgap of semiconductor photocatalysts. J Chem Phys 2020; 152:231101. [DOI: 10.1063/5.0012330] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Y. Cho
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - A. Yamaguchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - R. Uehara
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - S. Yasuhara
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - T. Hoshina
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - M. Miyauchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Nakamura-Takahashi A, Tanase T, Matsunaga S, Shintani S, Abe S, Nitahara-Kasahara Y, Watanabe A, Hirai Y, Okada T, Yamaguchi A, Kasahara M. High-Level Expression of Alkaline Phosphatase by Adeno-Associated Virus Vector Ameliorates Pathological Bone Structure in a Hypophosphatasia Mouse Model. Calcif Tissue Int 2020; 106:665-677. [PMID: 32076747 DOI: 10.1007/s00223-020-00676-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 02/09/2020] [Indexed: 01/01/2023]
Abstract
Hypophosphatasia (HPP) is a systemic skeletal disease caused by mutations in the gene encoding tissue-nonspecific alkaline phosphatase (TNALP). We recently reported that survival of HPP model mice can be prolonged using an adeno-associated virus (AAV) vector expressing bone-targeted TNALP with deca-aspartate at the C terminus (TNALP-D10); however, abnormal bone structure and hypomineralization remained in the treated mice. Here, to develop a more effective and clinically applicable approach, we assessed whether transfection with TNALP-D10 expressing virus vector at a higher dose than previously used would ameliorate bone structure defects. We constructed a self-complementary AAV8 vector expressing TNALP driven by the chicken beta-actin (CBA) promoter (scAAV8-CB-TNALP-D10). The vector was injected into both quadriceps femoris muscles of newborn HPP mice at a dose of 4.5 × 1012 vector genome (v.g.)/body, resulting in 20 U/mL of serum ALP activity. The 4.5 × 1012 v.g./body-treated HPP mice grew normally and displayed improved bone structure at the knee joints in X-ray images. Micro-CT analysis showed normal trabecular bone structure and mineralization. The mechanical properties of the femur were also recovered. Histological analysis of the femurs demonstrated that ALP replacement levels were sufficient to promote normal, growth plate cartilage arrangement. These results suggest that AAV vector-mediated high-dose TNALP-D10 therapy is a promising option for improving the quality of life (QOL) of patients with the infantile form of HPP.
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Affiliation(s)
- Aki Nakamura-Takahashi
- Department of Pharmacology, Tokyo Dental College, 2-9-18, Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan.
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Tokyo, Japan.
| | - Toshiki Tanase
- Department of Pediatric Dentistry, Tokyo Dental College, Tokyo, Japan
| | - Satoru Matsunaga
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Tokyo, Japan
- Department of Anatomy, Tokyo Dental College, Tokyo, Japan
| | - Seikou Shintani
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Tokyo, Japan
- Department of Pediatric Dentistry, Tokyo Dental College, Tokyo, Japan
| | - Shinichi Abe
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Tokyo, Japan
- Department of Anatomy, Tokyo Dental College, Tokyo, Japan
| | - Yuko Nitahara-Kasahara
- Department of Molecular Therapy, National Center of Neurology and Psychiatry, National Institute of Neuroscience, Tokyo, Japan
| | - Atsushi Watanabe
- Division of Clinical Genetics, Kanazawa University Hospital, Ishikawa, Japan
| | - Yukihiko Hirai
- Division of Molecular and Medical Genetics, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Takashi Okada
- Division of Molecular and Medical Genetics, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Akira Yamaguchi
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Tokyo, Japan
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Masataka Kasahara
- Department of Pharmacology, Tokyo Dental College, 2-9-18, Kandamisaki-cho, Chiyoda-ku, Tokyo, 101-0061, Japan.
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Tokyo, Japan.
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Miyazaki Y, Nakano K, Nakayamada S, Kubo S, Iwata S, Hanami K, Fukuyo S, Miyagawa I, Yamaguchi A, Kawabe A, Kazuyoshi S, Tanaka Y. FRI0102 SERUM TNFΑ LEVELS AT 24 HOURS AFTER FIRST ADMINISTRATION OF CERTOLIZUMAB PEGOL PREDICT EFFECTIVENESS AT WEEK 12 IN PATIENTS WITH RHEUMATOID ARTHRITIS FROM TSUBAME STUDY (UMIN ID:0002381). Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:To increase the remission rate of rheumatoid arthritis (RA), it is necessary to determine the efficacy of the tumor necrosis factor (TNF) inhibitor as early as possible. Moreover, the response to certolizumab pegol (CZP) at 12 weeks has been reported to predict its long-term efficacy.Objectives:As part of a prospective single-center observational study (TSUBAME study), we prospectively enrolled patients to be treated with CZP in our institution to evaluate its effectiveness and safety starting at 24 hours after the first dose in clinical settings, while recording blood CZP concentrations and biomarkers over time to examine their correlation with clinical effects.Methods:One hundred patients with RA and inadequate response to MTX who received CZP were enrolled in the TSUBAME study. The changes in serum TNFα, IL-6, and CZP levels at 24 hours after first administration of CZP were measured, and the correlation between serum biomarkers and clinical response was determined.Results:At 24 hours after CZP initiation, significant improvement was observed in the disease activity (baseline and 24 h: 5.4 ± 1.3, 5.0 ± 1.3, respectively, p < 0.01), which was maintained until week 12. (baseline and 12 w: 5.4 ± 1.3, 3.3 ± 1.4, respectively, p < 0.01). Serum TNFα and IL-6 levels significantly decreased at 24 hours after first administration of CZP compared to baseline. No correlation was found between TNFα and IL-6 levels at baseline and the clinical response. According to univariate analysis, low serum TNFα and IL-6 levels and high CZP levels at 24 hours were associated with DAS28 (ESR) remission at 12 weeks. According to multivariate analysis, low serum TNFα levels at 24 hours were significantly associated with DAS28 (ESR) remission at 12 weeks (OR 0.05, 95%CI 0.01, 0.75, p = 0.03). Based on these findings, an ROC curve was created using remission according to the DAS28 (ESR) at week 12 as a dependent variable and TNFα concentration at 24 hours as an independent variable, resulting in a cut-off value of 0.76 pg/ml. From this result, the TNFα concentration at 24 hours was divided into 2 groups according to this cut-off, and the rates of remission according to the DAS28 (ESR) at week 12 were compared. In the group with TNFα concentration at 24 hours below the cut-off value, the rate of remission according to the DAS28 (ESR) at week 12 was significantly higher than in the group with TNFα concentration at 24 hours above the cut-off value (below the cut-off: above the cut-off = 56.3%: 21.6%, p < 0.001). Between the group that achieved remission according to the DAS28(ESR) and the group that did not achieve remission at week 12, there was almost no difference in the distribution of TNFα concentrations at baseline; however, the distribution of TNFα concentrations at 24 hours was lower in the group that achieved remission.Conclusion:CZP was effective where serum TNFα was strongly neutralized within 24 hours. These results suggest that low serum TNFα levels at 24 hours after first administration of CZP may predict the effectiveness of CZP. To increase the remission rate in RA, it is necessary to determine the effectiveness of the molecular targeted drugs used at an early point, in addition to how rapid the onset of action is. CZP is extremely fast-acting, and its effectiveness can be predicted as early as 24 hours after the first dose, suggesting that it may be possible to determine the effectiveness early.Acknowledgments:The authors thank Ms. M. Hirahara for providing excellent technical assistance.Disclosure of Interests:Yusuke Miyazaki Grant/research support from: Astellas Pharma Inc and UCB S.A., Kazuhisa Nakano: None declared, Shingo Nakayamada Grant/research support from: Mitsubishi-Tanabe, Takeda, Novartis and MSD, Speakers bureau: Bristol-Myers, Sanofi, Abbvie, Eisai, Eli Lilly, Chugai, Asahi-kasei and Pfizer, Satoshi Kubo: None declared, Shigeru Iwata: None declared, Kentaro Hanami: None declared, Shunsuke Fukuyo: None declared, Ippei Miyagawa: None declared, Ayako Yamaguchi: None declared, Akio Kawabe: None declared, SAITO KAZUYOSHI: None declared, Yoshiya Tanaka Grant/research support from: Asahi-kasei, Astellas, Mitsubishi-Tanabe, Chugai, Takeda, Sanofi, Bristol-Myers, UCB, Daiichi-Sankyo, Eisai, Pfizer, and Ono, Consultant of: Abbvie, Astellas, Bristol-Myers Squibb, Eli Lilly, Pfizer, Speakers bureau: Daiichi-Sankyo, Astellas, Chugai, Eli Lilly, Pfizer, AbbVie, YL Biologics, Bristol-Myers, Takeda, Mitsubishi-Tanabe, Novartis, Eisai, Janssen, Sanofi, UCB, and Teijin
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Yamaguchi A, Edanami Y, Yamaguchi T, Shibuya Y, Fukaya N, Kohzuma T. Effect of Cavity Size of Mesoporous Silica on Type 1 Copper Site Geometry in Pseudoazurin. BCSJ 2020. [DOI: 10.1246/bcsj.20190355] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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)
- Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Yurie Edanami
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Takahide Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Yuuta Shibuya
- New Industry Creation Hatchery Center, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Norihisa Fukaya
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Takamitsu Kohzuma
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
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Yamaguchi A, Hamaguchi Y, Miyauchi M. Crystal Structure-mediated Difference in Spectroscopic Behavior of OER Intermediate on MnO 2 in the Presence of Pyridine. CHEM LETT 2020. [DOI: 10.1246/cl.200009] [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]
Affiliation(s)
- Akira Yamaguchi
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yosuke Hamaguchi
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Masahiro Miyauchi
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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