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Kobayashi F, Watanabe J, Koizumi M, Sata N. Efficacy and safety of mesh non-fixation in patients undergoing laparo-endoscopic repair of groin hernia: a systematic review and meta-analysis. Hernia 2023; 27:1415-1427. [PMID: 37955811 DOI: 10.1007/s10029-023-02919-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 10/22/2023] [Indexed: 11/14/2023]
Abstract
PURPOSE To examine updated evidence on the efficacy and safety of mesh non-fixation in patients undergoing laparo-endoscopic repair of groin hernias. METHODS We searched MEDLINE, Cochrane Central Library, Embase, ClinicalTrials. gov, and ICTRP databases to identify randomized controlled trials. The primary outcomes were recurrence, chronic pain, and return to daily life. The certainty of evidence (CoE) was assessed by grading recommendations, assessments, developments, and evaluations. We performed a subgroup analysis based on the surgical type. This study was registered with PROSPERO (CRD 42022368929). RESULTS We included 25 trials with 3,668 patients (4,038 hernias) were included. Mesh non-fixation resulted in little to no difference in hernia recurrence (relative risk [RR]:1.40, 95% confidence interval [CI]:0.59-3.31; I2 = 0%; moderate CoE) and chronic pain (RR:0.48, 95% CI:0.13-1.78; I2 = 77%; moderate CoE), but reduced return to daily life (mean difference [MD]: - 1.79 days, 95% CI: - 2.79 to -0.80; I2 = 96%; low CoE). In subgroup analyses, the transabdominal preperitoneal approach (TAPP) (MD: - 2.97 days, 95% CI: - 4.87 to - 1.08; I2 = 97%) reduced return to daily life than total extraperitoneal inguinal approach (MD: - 0.24 days, 95% CI - 0.71 to 0.24; I2 = 61%) (p = 0.006). CONCLUSIONS Mesh nonfixation improves the return to daily life without increasing the risk of hernia recurrence or chronic pain. Surgeons and patients may discuss mesh nonfixation options to accommodate a patient's desired return to daily life. Further trials focusing on TAPP are required to confirm these findings.
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Affiliation(s)
- F Kobayashi
- Department of Surgery, Division of Gastroenterological, General, and Transplant Surgery, Jichi Medical University, Shimotsuke city, Tochigi, Japan
| | - J Watanabe
- Department of Surgery, Division of Gastroenterological, General, and Transplant Surgery, Jichi Medical University, Shimotsuke city, Tochigi, Japan.
- Division of Community and Family Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke city, Tochigi, 329-0498, Japan.
| | - M Koizumi
- Department of Surgery, Division of Gastroenterological, General, and Transplant Surgery, Jichi Medical University, Shimotsuke city, Tochigi, Japan
| | - N Sata
- Department of Surgery, Division of Gastroenterological, General, and Transplant Surgery, Jichi Medical University, Shimotsuke city, Tochigi, Japan
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Taniguchi T, Okuno M, Shinoda T, Kobayashi F, Takahashi K, Yuasa H, Nakamura Y, Tanaka H, Kajitani R, Itoh T. GINGER: an integrated method for high-accuracy prediction of gene structure in higher eukaryotes at the gene and exon level. DNA Res 2023; 30:dsad017. [PMID: 37478310 PMCID: PMC10439787 DOI: 10.1093/dnares/dsad017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/10/2023] [Accepted: 07/20/2023] [Indexed: 07/23/2023] Open
Abstract
The prediction of gene structure within the genome sequence is the starting point of genome analysis, and its accuracy has a significant impact on the quality of subsequent analyses. Gene structure prediction is roughly divided into RNA-Seq-based methods, ab initio-based methods, homology-based methods, and the integration of individual prediction methods. Integrated methods are mainstream in recent genome projects because they improve prediction accuracy by combining or taking the best individual prediction findings; however, adequate prediction accuracy for eukaryotic species has not yet been achieved. Therefore, we developed an integrated tool, GINGER, that solves various issues related to gene structure prediction in higher eukaryotes. By handling artefacts in alignments of RNA and protein sequences, reconstructing gene structures via dynamic programming with appropriately weighted and scored exon/intron/intergenic regions, and applying different prediction processes and filtering criteria to multi-exon and single-exon genes, we achieved a significant improvement in accuracy compared to the existing integration methods. The feature of GINGER is its high prediction accuracy at the gene and exon levels, which is pronounced for species with more complex gene architectures. GINGER is implemented using Nextflow, which allows for the efficient and effective use of computing resources.
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Affiliation(s)
- Takeaki Taniguchi
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Toyohira-Ku, Sapporo, 062-8517, Japan
| | - Miki Okuno
- Division of Microbiology, Department of Infectious Medicine, Kurume University School of Medicine, Fukuoka 830-0011, Japan
| | - Takahiro Shinoda
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Fumiya Kobayashi
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Kazuki Takahashi
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hideaki Yuasa
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Yuta Nakamura
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hiroyuki Tanaka
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Rei Kajitani
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
| | - Takehiko Itoh
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8550, Japan
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Kobayashi F, Gemba M, Hoshino S, Tsukiyama K, Shiotsuka M, Nakajima T, Tadokoro M. Polarity and Dielectric Property Control Triggered by a Coordinated Solvent Molecule Exchange in Luminescent Mononuclear Aluminium(III) Complexes. Chemistry 2023:e202203937. [PMID: 37017134 DOI: 10.1002/chem.202203937] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/06/2023]
Abstract
The development of molecule-based multifunctional switchable materials, exhibiting a switch of polarity and dielectric property, are extremely limited. Herein, we demonstrated solvent-vapour-induced reversible molecular rearrangements between non-polar crystals [Al(sap)(acac)(sol)] (H2sap = 2-salicylideneaminophenol, acac = acetylacetonate, sol = MeOH (1), EtOH (2)) and polar crystal [Al(sap)(acac)(DMSO)] (3). This crystal-to-crystal structural transformation was accompanied by a switch of second harmonic generation (SHG) and dielectric properties, including the formation of ferroelectric domains, reflecting the SHG-active polar Cc space group of 3. This is the first reported example of dielectric properties and polarity switching in luminescent mononuclear aluminium(III) complexes, which exhibit the strong green emission in the solid state.
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Affiliation(s)
- Fumiya Kobayashi
- Tokyo University of Science: Tokyo Rika Daigaku, Chemistry, 1-3, Kagurazaka, Shinjuku-ku, 1628601, Tokyo, JAPAN
| | - Misato Gemba
- Tokyo University of Science: Tokyo Rika Daigaku, Chermistry, JAPAN
| | - Shoma Hoshino
- Tokyo University of Science: Tokyo Rika Daigaku, Chermistry, JAPAN
| | - Koichi Tsukiyama
- Tokyo University of Science: Tokyo Rika Daigaku, Chermistry, JAPAN
| | - Michito Shiotsuka
- Nagoya Institute of Technology: Nagoya Kogyo Daigaku, Engineering, JAPAN
| | - Takashi Nakajima
- Tokyo University of Science: Tokyo Rika Daigaku, Applied Physics, JAPAN
| | - Makoto Tadokoro
- Tokyo University of Science: Tokyo Rika Daigaku, Chermistry, JAPAN
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4
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Kiuchi H, Sonoda Y, Miyake Y, Kobayashi F, Tsutsumi J, Tadokoro M, Kanai K. Mechanism of high photoluminescence quantum yield of melem. Phys Chem Chem Phys 2022; 24:23602-23611. [PMID: 36134431 DOI: 10.1039/d2cp03693b] [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: 11/21/2022]
Abstract
To produce high-efficiency organic light-emitting diodes, materials that exhibit thermally activated delayed fluorescence (TADF) are attracting attention as alternatives to phosphorescent materials containing heavy metallic elements. Melem, a small molecule with a heptazine backbone composed only of nitrogen, carbon, and hydrogen, is known to emit light in the near-ultraviolet region and exhibit high photoluminescence (PL) quantum yield and delayed fluorescence. However, the mechanism underlying the high PL quantum yield remains unclear. This study aimed to elucidate the mechanism of the high PL quantum yield of melem by examining its optical properties in detail. When the amount of dissolved oxygen in the melem solution was increased by bubbling oxygen through it, the PL quantum yield and emission lifetime decreased significantly, indicating that the triplet state was involved in the light-emission mechanism. Furthermore, the temperature dependence of the PL intensity of melem was investigated; the PL intensity decreased with decreasing temperature, indicating that it increases thermally. The experimental results show that melem is a TADF material that produces an extremely high PL quantum yield by upconversion from the triplet to the singlet excited state.
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Affiliation(s)
- Hiroki Kiuchi
- Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
| | - Yoriko Sonoda
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, 305-8565 Tsukuba, Ibaraki, Japan
| | - Yuto Miyake
- Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
| | - Fumiya Kobayashi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka 1-3, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Jun'ya Tsutsumi
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, 305-8565 Tsukuba, Ibaraki, Japan
| | - Makoto Tadokoro
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka 1-3, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kaname Kanai
- Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
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Tadokoro M, Itoh M, Nishimura R, Sekiguchi K, Hoshino N, Kamebuchi H, Miyazaki J, Kobayashi F, Mizuno M, Akutagawa T. Front Cover: Proton Conduction at High Temperature in High‐Symmetry Hydrogen‐Bonded Molecular Crystals of Ru
III
Complexes with Six Imidazole‐Imidazolate Ligands (Chem. Eur. J. 47/2022). Chemistry 2022. [DOI: 10.1002/chem.202202354] [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: 11/08/2022]
Affiliation(s)
- Makoto Tadokoro
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1–3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Masaki Itoh
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1–3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Ryota Nishimura
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1–3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Kensuke Sekiguchi
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1–3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Norihisa Hoshino
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Katahira, 2–1-1, Aoba-ku Sendai 980-8577 Japan
| | - Hajime Kamebuchi
- Department of Chemistry College of Humanities and Sciences Nihon University Sakurajyosui 3–25-40, Setagaya-ku Tokyo 156-8550 Japan
| | - Jun Miyazaki
- Department of Natural Sciences, School of Engineering Tokyo Denki University Senjuasahi-cho 5, Adachi-ku Tokyo 120-8551 Japan
| | - Fumiya Kobayashi
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1–3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Motohiro Mizuno
- Graduate School of Natural Science and Technology Kanazawa University Kanazawa 920-1192 Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Katahira, 2–1-1, Aoba-ku Sendai 980-8577 Japan
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6
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Tadokoro M, Itoh M, Nishimura R, Sekiguchi K, Hoshino N, Kamebuchi H, Miyazaki J, Kobayashi F, Mizuno M, Akutagawa T. Proton Conduction at High Temperature in High‐Symmetry Hydrogen‐Bonded Molecular Crystals of Ru
III
Complexes with Six Imidazole–Imidazolate Ligands. Chemistry 2022; 28:e202202355. [DOI: 10.1002/chem.202202355] [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: 11/09/2022]
Affiliation(s)
- Makoto Tadokoro
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1-3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Masaki Itoh
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1-3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Ryota Nishimura
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1-3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Kensuke Sekiguchi
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1-3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Norihisa Hoshino
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Katahira, 2-1-1,Aoba-ku Sendai 980-8577 Japan
| | - Hajime Kamebuchi
- Department of Chemistry, College of Humanities and Sciences Nihon University Sakurajyosui 3-25-40, Setagaya-ku Tokyo 156-8550 Japan
| | - Jun Miyazaki
- Department of Natural Sciences, School of Engineering Tokyo Denki University Senjuasahi-cho 5, Adachi-ku Tokyo 120-8551 Japan
| | - Fumiya Kobayashi
- Department of Chemistry, Faculty of Science Tokyo University of Science Kagurazaka 1-3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Motohiro Mizuno
- Graduate School of Natural Science and Technology Kanazawa University Kanazawa 920-1192 Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Katahira, 2-1-1,Aoba-ku Sendai 980-8577 Japan
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7
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Tadokoro M, Itoh M, Nishimura R, Sekiguchi K, Hoshino N, Kamebuchi H, Miyazaki J, Kobayashi F, Mizuno M, Akutagawa T. Proton Conduction at High Temperature in High‐Symmetry Hydrogen‐Bonded Molecular Crystals of Ru
III
Complexes with Six Imidazole‐Imidazolate Ligands. Chemistry 2022; 28:e202201397. [PMID: 35760750 PMCID: PMC9545294 DOI: 10.1002/chem.202201397] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Makoto Tadokoro
- Department of Chemistry Faculty of Science Tokyo University of Science Kagurazaka 1–3 Shinjuku-ku Tokyo 162-8601 Japan
| | - Masaki Itoh
- Department of Chemistry Faculty of Science Tokyo University of Science Kagurazaka 1–3 Shinjuku-ku Tokyo 162-8601 Japan
| | - Ryota Nishimura
- Department of Chemistry Faculty of Science Tokyo University of Science Kagurazaka 1–3 Shinjuku-ku Tokyo 162-8601 Japan
| | - Kensuke Sekiguchi
- Department of Chemistry Faculty of Science Tokyo University of Science Kagurazaka 1–3 Shinjuku-ku Tokyo 162-8601 Japan
| | - Norihisa Hoshino
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Katahira, 2–1-1, Aoba-ku Sendai 980-8577 Japan
| | - Hajime Kamebuchi
- Department of Chemistry College of Humanities and Sciences Nihon University Sakurajyosui 3–25-40 Setagaya-ku Tokyo 156-8550 Japan
| | - Jun Miyazaki
- Department of Natural Sciences School of Engineering Tokyo Denki University Senjuasahi-cho 5 Adachi-ku Tokyo 120-8551 Japan
| | - Fumiya Kobayashi
- Department of Chemistry Faculty of Science Tokyo University of Science Kagurazaka 1–3 Shinjuku-ku Tokyo 162-8601 Japan
| | - Motohiro Mizuno
- Graduate School of Natural Science and Technology Kanazawa University Kanazawa 920-1192 Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Katahira, 2–1-1, Aoba-ku Sendai 980-8577 Japan
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8
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Fujii M, Nishinaka T, Inatomi A, Katagiri N, Kobayashi F, Imaoka S, Tanaka S, Mizuno T, Tsukiya T, Umeki A, Matsumiya G. Impact of Left Ventricular Unloading Under Circulatory Support with Venoarterial ECMO in Heart Failure Animal Model. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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9
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Garon E, Johnson M, Lisberg A, Spira A, Yamamoto N, Heist R, Sands J, Yoh K, Meric-Bernstam F, Kitazono S, Greenberg J, Kobayashi F, Guevara F, Kawasaki Y, Shimizu T. MA03.02 TROPION-PanTumor01: Updated Results From the NSCLC Cohort of the Phase 1 Study of Datopotamab Deruxtecan in Solid Tumors. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yuasa H, Kajitani R, Nakamura Y, Takahashi K, Okuno M, Kobayashi F, Shinoda T, Toyoda A, Suzuki Y, Thongtham N, Forsman Z, Bronstein O, Seveso D, Montalbetti E, Taquet C, Eyal G, Yasuda N, Itoh T. Elucidation of the speciation history of three sister species of crown-of-thorns starfish (Acanthaster spp.) based on genomic analysis. DNA Res 2021; 28:6350483. [PMID: 34387305 DOI: 10.1093/dnares/dsab012] [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: 12/21/2020] [Indexed: 11/14/2022] Open
Abstract
The crown-of-thorns starfish (COTS) is a coral predator that is widely distributed in Indo-Pacific Oceans. A previous phylogenetic study using partial mitochondrial sequences suggested that COTS had diverged into four distinct species, but a nuclear genome-based analysis to confirm this was not conducted. To address this, COTS species nuclear genome sequences were analysed here, sequencing Northern Indian Ocean (NIO) and Red Sea (RS) species genomes for the first time, followed by a comparative analysis with the Pacific Ocean (PO) species. Phylogenetic analysis and ADMIXTURE analysis revealed clear divergences between the three COTS species. Furthermore, within the PO species, the phylogenetic position of the Hawaiian sample was further away from the other Pacific-derived samples than expected based on the mitochondrial data, suggesting that it may be a PO subspecies. The pairwise sequentially Markovian coalescent model showed that the trajectories of the population size diverged by region during the Mid-Pleistocene transition when the sea-level was dramatically decreased, strongly suggesting that the three COTS species experienced allopatric speciation. Analysis of the orthologues indicated that there were remarkable genes with species-specific positive selection in the genomes of the PO and RS species, which suggested that there may be local adaptations in the COTS species.
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Affiliation(s)
- Hideaki Yuasa
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Rei Kajitani
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Yuta Nakamura
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Kazuki Takahashi
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Miki Okuno
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Fumiya Kobayashi
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Takahiro Shinoda
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Atsushi Toyoda
- Department of Genomics and Evolutionary Biology, National Institute of Genetics, Mishima City, Shizuoka 411-8540, Japan
| | - Yutaka Suzuki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa-shi, Chiba 272-8562, Japan
| | | | - Zac Forsman
- Hawai'i Institute of Marine Biology, School of Ocean & Earth Sciences & Technology, University of Hawai'i at Mānoa, Coconut Island, Kāne'ohe, HI, USA
| | - Omri Bronstein
- George S. Wise Faculty of Life Sciences, School of Zoology, Tel Aviv University, Tel Aviv 6997801, Israel.,The Steinhardt Museum of Natural History, Israel National Center for Biodiversity Studies, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Davide Seveso
- Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, 20126 Milan, Italy.,Marine Research and High Education Center (MaRHE Center), 12030 Faafu Magoodhoo, Republic of Maldives
| | - Enrico Montalbetti
- Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, 20126 Milan, Italy.,Marine Research and High Education Center (MaRHE Center), 12030 Faafu Magoodhoo, Republic of Maldives
| | | | - Gal Eyal
- ARC Centre of Excellence for Coral Reef Studies, School of Biological Sciences, University of Queensland, St. Lucia, QLD 4072, Australia.,The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Nina Yasuda
- Faculty of Agriculture, University of Miyazaki, Miyazaki, Miyazaki 889-2192, Japan
| | - Takehiko Itoh
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
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11
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Garon E, Johnson M, Lisberg A, Spira A, Yamamoto N, Heist R, Sands J, Yoh K, Meric-Bernstam F, Kitazono S, Greenberg J, Kobayashi F, Kawasaki Y, Jukofsky L, Nakamura K, Shimizu T. LBA49 Efficacy of datopotamab deruxtecan (Dato-DXd) in patients (pts) with advanced/metastatic (adv/met) non-small cell lung cancer (NSCLC) and actionable genomic alterations (AGAs): Preliminary results from the phase I TROPION-PanTumor01 study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.2128] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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12
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Zenno H, Kobayashi F, Nakamura M, Sekine Y, Lindoy LF, Hayami S. Hydrogen bond-induced abrupt spin crossover behaviour in 1-D cobalt(II) complexes - the key role of solvate water molecules. Dalton Trans 2021; 50:7843-7853. [PMID: 34008663 DOI: 10.1039/d1dt01069g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The magnetic properties and structural aspects of the 1-D cobalt(ii) complexes, [Co(pyterpy)Cl2]·2H2O (1·2H2O; pyterpy = 4'-(4'''-pyridyl)-2,2':6',2''-terpyridine) and [Co(pyethyterpy)Cl2]·2H2O (2·2H2O; pyethyterpy = 4'-((4'''-pyridyl)ethynyl)-2,2':6',2''-terpyridine) are reported. In each complex the central cobalt(ii) ion displays an octahedral coordination environment composed of three nitrogen donors from the terpyridine moiety, a nitrogen donor from a pyridyl group and two chloride ligands which occupy the axial sites. 1·2H2O exhibits abrupt spin-crossover (SCO) behaviour (T1/2↓ = 218 K; T1/2↑ = 227 K) along with a thermal hysteresis loop, while 2·2H2O and the dehydrated species 1 and 2 exhibit high-spin (HS) states at 2-300 K as well as field-induced single-molecule magnet (SMM) behaviour attributed to the presence of magnetic anisotropic HS cobalt(ii) species (S = 3/2). 1·2H2O exhibited reversible desorption/resorption of its two water molecules, revealing reversible switching between SCO and SMM behaviour triggered by the dehydration/rehydration processes. Single crystal X-ray structural analyses revealed that 1·2H2O crystalizes in the orthorhombic space group Pcca while 2 and 2·2H2O crystallize in the monoclinic space group P2/n. Each of the 1-D chains formed by 1·2H2O in the solid state are bridged by hydrogen bonds between water molecules and chloride groups to form a 2-D layered structure. The water molecules bridging 1-D chains in 1·2H2O interact with the chloride ligands occupying the axial positions, complementing the effect of Jahn-Teller distortion and contributing to the abrupt SCO behaviour and associated stabilization of the LS state.
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Affiliation(s)
- Hikaru Zenno
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Fumiya Kobayashi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yoshihiro Sekine
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan and Priority Organization for Innovation and Excellence, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Leonard F Lindoy
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan and Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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13
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Bardia A, Juric D, Shimizu T, Tolcher A, Karim R, Spira A, Mukohara T, Lisberg A, Kogawa T, Krop I, Papadopoulos K, Hamilton E, Damodaran S, Greenberg J, Gu W, Kobayashi F, Guevara F, Jikoh T, Kawasaki Y, Meric-Bernstam F. LBA4 Datopotamab deruxtecan (Dato-DXd), a TROP2-directed antibody-drug conjugate (ADC), for triple-negative breast cancer (TNBC): Preliminary results from an ongoing phase I trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.03.213] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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14
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Tadokoro M, Machida H, Toyofuku R, Murakami M, Kamebuchi H, Isoda K, Kobayashi F, Takahashi K, Noro S, Nakamura T. Gas sorption of nano-porous supramolecules formed by multi-hydrogen bonded coordination capsules. Chem Commun (Camb) 2021; 57:2249-2252. [PMID: 33616138 DOI: 10.1039/d0cc07869g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[{ReI(CO)3(Hbim)}3(tpta)]2 (1, Hbim- = 2,2'-biimidazolate monoanion, tpta = 2,4,6-tripyridyl-1,3,5-triazine) was prepared as a nano-space supramolecule by using a new group of H-bonded coordination capsules. The hamburger bun-shaped half unit [{ReI(CO)3(Hbim)}3(tpta)] contains six intermolecular H-bonds of Hbim- ligands with complementary dual NHN types, and three [ReI(CO)3(Hbim)] are coordinated by bridging tridentate tpta. Interestingly, mechanical grinding easily would convert single crystals of 1 to an amorphous state with minor crystallinity while maintaining the nano-space pores. The ground sample can reversibly uptake and release small molecules such as CO2 and (CH2Cl)2.
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Affiliation(s)
- Makoto Tadokoro
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka 1-3, Shinjuku-ku, Tokyo 162-8601, Japan.
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15
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Spira A, Lisberg A, Sands J, Greenberg J, Phillips P, Guevara F, Tajima N, Kawasaki Y, Gu J, Kobayashi F, Yamamoto N, Johnson M, Meric-Bernstam F, Yoh K, Garon E, Heist R, Shimizu T. OA03.03 Datopotamab Deruxtecan (Dato-DXd; DS-1062), a TROP2 ADC, in Patients With Advanced NSCLC: Updated Results of TROPION-PanTumor01 Phase 1 Study. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.280] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Kobayashi F, Iwaya K, Zenno H, Nakamura M, Li F, Hayami S. Spin State Modulation in Cobalt(II) Terpyridine Complexes by Co-Crystallization with 1,3,5-Triiodo-2,4,6-trifluorobenzene. BCSJ 2021. [DOI: 10.1246/bcsj.20200246] [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] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kyoko Iwaya
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Hikaru Zenno
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Feng Li
- School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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17
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Kobayashi F, Komatsumaru Y, Akiyoshi R, Nakamura M, Zhang Y, Lindoy LF, Hayami S. Water Molecule-Induced Reversible Magnetic Switching in a Bis-Terpyridine Cobalt(II) Complex Exhibiting Coexistence of Spin Crossover and Orbital Transition Behaviors. Inorg Chem 2020; 59:16843-16852. [DOI: 10.1021/acs.inorgchem.0c00818] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yuki Komatsumaru
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Ryohei Akiyoshi
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Leonard F. Lindoy
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Institute of Pulsed Power Science (IPPS), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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18
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Kobayashi F, Akiyoshi R, Kosumi D, Nakamura M, Lindoy LF, Hayami S. Solvent vapor-induced polarity and ferroelectricity switching. Chem Commun (Camb) 2020; 56:10509-10512. [PMID: 32776059 DOI: 10.1039/d0cc04497k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vapor-induced crystal to crystal transformation between non-polar [Fe(sap)(acac)(sol)] (H2sap = 2-salicylideneaminophenol, acac = acethylacetate, sol = MeOH, pyridine) and polar [Fe(sap)(acac)(DMSO)] was demonstrated. It provides an example of switchable ferroelectric behaviour attributted to the structural phase transition triggered by solvent vapour.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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19
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Yanagisawa J, Hiraoka T, Kobayashi F, Saito D, Yoshida M, Kato M, Takeiri F, Kobayashi G, Ohba M, Lindoy LF, Ohtani R, Hayami S. Luminescent ionic liquid formed from a melted rhenium(v) cluster. Chem Commun (Camb) 2020; 56:7957-7960. [PMID: 32537623 DOI: 10.1039/d0cc02937h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recently, non-crystalline coordination materials have been shown to represent a versatile class of functional materials. However, such materials incorporating metal complex clusters have remained largely unexplored. Herein, we demonstrate that a luminescent tetranuclear ReV cluster melts at 489 K, with the cluster structure being maintained in the corresponding supercooled ionic liquid phase.
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Affiliation(s)
- Junichi Yanagisawa
- Department of Chemistry, Graduate School of Science and Technology Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Tomoaki Hiraoka
- Department of Chemistry, Graduate School of Science and Technology Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Fumiya Kobayashi
- Department of Chemistry, Graduate School of Science and Technology Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Daisuke Saito
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Masaki Yoshida
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Masako Kato
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Fumitaka Takeiri
- Department of Materials Molecular Science, Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan and SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Genki Kobayashi
- Department of Materials Molecular Science, Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan and SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Masaaki Ohba
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Leonard F Lindoy
- School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Ryo Ohtani
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
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20
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Kobayashi F, Uehara O, Ito C, Furusawa M, Abiko Y, Muramatsu T. DNA methylation of GJA1, BMP2 and BMP4 in a human cementoblast cell line induced by lipopolysaccharide. Int Endod J 2020; 53:804-811. [PMID: 32011747 DOI: 10.1111/iej.13275] [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: 06/06/2019] [Revised: 01/30/2020] [Accepted: 01/30/2020] [Indexed: 11/26/2022]
Abstract
AIM To examine DNA methylation of GJA1, BMP2 and BMP4 in human cementoblasts (HCEM) induced by lipopolysaccharide (LPS). METHODOLOGY HCEM were cultured in osteoinduction medium. After 24 h, Escherichia coli LPS (1 μg/mL) was added to the medium, which was changed every 2-3 days. Untreated samples were used as controls. Messenger RNA was extracted after 4 weeks, and quantitative real-time polymerase chain reaction (qRT-PCR) for GJA1, BMP2, BMP4 and DNMT1 was performed. Genomic DNA was extracted after 4 weeks, and quantitative methylation-specific polymerase chain reaction was carried out for GJA1, BMP2 and BMP4. To detect mineralization, alizarin red and alkaline phosphatase staining were performed. The cells were also treated with the DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine (5Aza) and examined. The significance of differences amongst groups was assessed using a two-way analysis of variance (ANOVA) followed by Bonferroni's multiple comparison test with P < 0.05 being significant. RESULTS Decreased expression of mRNA was seen in GJA1, BMP2 and BMP4 after 4 weeks (P < 0.05). DNA hypermethylation was detected in GJA1, BMP2 and BMP4 (P < 0.05). Alizarin red staining and alkaline phosphatase staining revealed decreased mineralization levels in HCEM stimulated with LPS. 5Aza abolished the effects of DNA methylation in HCEM stimulated with LPS. CONCLUSIONS These results suggest that long-term LPS stimulation induces DNA methylation of GJA1, BMP2 and BMP4 in HCEM.
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Affiliation(s)
- F Kobayashi
- Department of Endodontics, Tokyo Dental College, Tokyo, Japan
| | - O Uehara
- Division of Disease Control and Molecular Epidemiology, Department of Oral Growth and Development, Health Sciences University of Hokkaido, Tobetsu, Japan
| | - C Ito
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - M Furusawa
- Department of Endodontics, Tokyo Dental College, Tokyo, Japan
| | - Y Abiko
- Division of Oral Medicine and Pathology, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Tobetsu, Japan
| | - T Muramatsu
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, Tokyo, Japan
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21
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Kusumoto S, Kobayashi F, Ohtani R, Kim Y, Hayami S, Nakamura M. Triply methoxo-bridged tetranuclear nickel cubane complexes with salicylate esters. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-018-0798-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Kobayashi F, Ohtani R, Nakamura M, Lindoy LF, Hayami S. Slow Magnetic Relaxation Triggered by a Structural Phase Transition in Long-Chain-Alkylated Cobalt(II) Single-Ion Magnets. Inorg Chem 2019; 58:7409-7415. [PMID: 31117627 DOI: 10.1021/acs.inorgchem.9b00543] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The behavior of single-ion magnets (SIMs) that reflects large distortions of their coordination environments caused by the packing of long alkyl chains for two Co(II) complexes of the type [Co(C n-terpy)2](BF4)2 (C n-terpy = 4'-alkoxy-2,2':6',2″-terpyridine; n = 10 (1), 16 (2)) is reported. 1·2MeOH, which features a highly distorted octahedral high-spin Co(II) center, exhibits field-induced slow magnetic relaxation under an applied dc field of 1000 Oe. Further detailed analysis of the relaxation process indicated the prevalence of the Raman process at low temperature. Surprisingly, 2 shows a reverse spin transition (rST) and also exhibits remarkable field-induced SIM behavior, revealing the presence of magnetic anisotropy for this high-spin Co(II) species that is triggered by a structural phase transition. We present here the first examples of the coexistence of field-induced slow magnetic relaxation and rST associated with structural phase transitions involving long-alkyl-chain conformational changes from gauche to anti. These results indicate the prospect of inducing SIM properties in other distorted high-spin Co(II) species bearing long alkyl chains.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Ryo Ohtani
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Leonard F Lindoy
- School of Chemistry , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan.,Institute of Pulsed Power Science (IPPS) , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
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23
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Kobayashi F, Ohtani R, Teraoka S, Yoshida M, Kato M, Zhang Y, Lindoy LF, Hayami S, Nakamura M. Phosphorescence at Low Temperature by External Heavy-Atom Effect in Zinc(II) Clusters. Chemistry 2019; 25:5875-5879. [PMID: 30860310 DOI: 10.1002/chem.201900343] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 01/23/2019] [Revised: 02/08/2019] [Indexed: 11/11/2022]
Abstract
Luminescent ZnII clusters [Zn4 L4 (μ3 -OMe)2 X2 ] (X=SCN (1), Cl (2), Br (3)) and [Zn7 L6 (μ3 -OMe)2 (μ3 -OH)4 ]Y2 (Y=I- (4), ClO4 - (5)), HL=methyl-3-methoxysalicylate, exhibiting blue fluorescence at room temperature (λmax =416≈429 nm, Φem =0.09-0.36) have been synthesised and investigated in detail. In one case the external heavy-atom effect (EHE) arising the presence of iodide counter anions yielded phosphorescence with a long emission lifetime (λmax =520 nm, τ=95.3 ms) at 77 K. Single-crystal X-ray structural analysis and time-dependent density-functional theory (TD-DFT) calculations revealed that their emission origin was attributed to the fluorescence from the singlet ligand-centred (1 LC) excited state, and the phosphorescence observed in 4 was caused by the EHE of counter anions having strong CH-I interactions.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Ryo Ohtani
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Saki Teraoka
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Masaki Yoshida
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Masako Kato
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, NSW, 2232, Australia
| | - Leonard F Lindoy
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan.,Institute of Pulsed Power Science (IPPS), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
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24
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Kobayashi F, Ohtani R, Teraoka S, Yoshida M, Kato M, Zhang Y, Lindoy LF, Hayami S, Nakamura M. Cover Feature: Phosphorescence at Low Temperature by External Heavy‐Atom Effect in Zinc(II) Clusters (Chem. Eur. J. 23/2019). Chemistry 2019. [DOI: 10.1002/chem.201901245] [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: 11/09/2022]
Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Graduate School of Science and TechnologyKumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Ryo Ohtani
- Department of Chemistry, Graduate School of Science and TechnologyKumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Saki Teraoka
- Department of Chemistry, Graduate School of Science and TechnologyKumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Masaki Yoshida
- Department of Chemistry, Faculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Masako Kato
- Department of Chemistry, Faculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organization Locked Bag 2001 Kirrawee DC NSW 2232 Australia
| | | | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and TechnologyKumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
- Institute of Pulsed Power Science (IPPS)Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and TechnologyKumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
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Ishikura S, Nakabayashi T, Kobayashi F, Fukuma H, Shibamoto Y. EP-1145 Xerostomia and volume and CT number changes of parotid glands during IMRT for head and neck cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31565-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Kusumoto S, Koga A, Kobayashi F, Ohtani R, Kim Y, Lindoy LF, Hayami S, Nakamura M. Weak ferromagnetism derived from spin canting in an amido-bridged homochiral Mn(iii) 1-D coordination polymer. Dalton Trans 2019; 48:8617-8622. [DOI: 10.1039/c9dt00593e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An amido-bridged homochiral one-dimensional (1D) Mn(iii) coordination polymer behaves as a weak ferromagnet arising from spin canting with a coercive field of 3.0 kOe.
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Affiliation(s)
- Sotaro Kusumoto
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Atsushi Koga
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Fumiya Kobayashi
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Ryo Ohtani
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Yang Kim
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | | | - Shinya Hayami
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Masaaki Nakamura
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
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27
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Abstract
A sextuply linked capsule incorporating two Ni(ii) cubane units is formed when Ni(ii) salts are reacted with N-aminoalkyl salicylamidato ligands in a 4 : 3 ratio in methanol. With a short (propyl) alkyl substituent, additional chloride counter ions are included in the cavity by occupation of one apex of each of the linked cubanes, while with a longer (pentyl) substituent, perchlorate and tetrafluoroborate anions are included, probably by H-bonding involving hydroxyl groups on the inner apices of the cubanes, indicating that the cavity can be regarded as suited to binding of hydrophilic units despite the lipophilic character of its links. The dicubane capsules show ferromagnetic behaviour typical of Ni(ii) cubanes in general, with coupling constants dependent upon the nature of the salt-derived counter anions.
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Affiliation(s)
- Sotaro Kusumoto
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
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28
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Komatsumaru Y, Nakaya M, Kobayashi F, Ohtani R, Nakamura M, Lindoy LF, Hayami S. Post-synthetic Modification of a Dinuclear Spin Crossover Iron(III) Complex. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800087] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yuki Komatsumaru
- Department of Chemistry; Graduate School of Science and Technology; Kumamoto University; 860-8555 Kumamoto Japan
| | - Manabu Nakaya
- Department of Chemistry; Graduate School of Science and Technology; Kumamoto University; 860-8555 Kumamoto Japan
| | - Fumiya Kobayashi
- Department of Chemistry; Graduate School of Science and Technology; Kumamoto University; 860-8555 Kumamoto Japan
| | - Ryo Ohtani
- Department of Chemistry; Graduate School of Science and Technology; Kumamoto University; 860-8555 Kumamoto Japan
| | - Masaaki Nakamura
- Department of Chemistry; Graduate School of Science and Technology; Kumamoto University; 860-8555 Kumamoto Japan
| | - Leonard F. Lindoy
- School of Chemistry; The University of Sydney; 2006 Sydney, NSW Australia
| | - Shinya Hayami
- Department of Chemistry; Graduate School of Science and Technology; Kumamoto University; 860-8555 Kumamoto Japan
- Institute of Pulsed Power Science (IPPS); Kumamoto University; 860-8555 Kumamoto Japan
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Kobayashi A, Kobayashi F, Ebina T, Ishii R, Nakamura T, Nge TT, Yamada T, Shiraishi A, Yamashita T. Effect of Thermal Base Generators on the FRP Fabrication with Glycol-Lignin. J PHOTOPOLYM SCI TEC 2018. [DOI: 10.2494/photopolymer.31.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ayumi Kobayashi
- Department of Applied Chemistry, School of Engineering, Tokyo University of Technology
| | - Fumiya Kobayashi
- Department of Applied Chemistry, School of Engineering, Tokyo University of Technology
| | - Takeo Ebina
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Ryo Ishii
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Takashi Nakamura
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Thi Thi Nge
- Forestry and Forest Products Research Institute
| | | | | | - Takashi Yamashita
- Department of Applied Chemistry, School of Engineering, Tokyo University of Technology
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Nakazawa R, Azuma N, Suzuki M, Nakatani M, Nankou T, Furuyoshi S, Yasuda A, Takata S, Tani N, Kobayashi F. A New Treatment for Dialysis-Related Amyloidosis with β 2-Microglobulin Adsorbent Column. Int J Artif Organs 2018. [DOI: 10.1177/039139889301601207] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dialysis-related amyloidosis (DRA) is characterized by the presence of β 2-microglobulin (β 2-m) in the plasma. In order to eliminate β 2-m from the circulating blood, the β 2-m selective adsorbent for direct hemoperfusion (DHP) was developed. A DHP column (BM-01), containing 350 ml of the adsorbent, was subjected to clinical trials. The column was connected with a PAN (AN69) membrane dialyzer in series and used 3 times a week for 1 week (11 patients), 4 weeks (5 patients), 6 months (1 patient) and 12 months (2 patients). The percent reduction (%) of β 2-m was for 16 patients (for 1 or 4 weeks), more than 65, and for 3 patients (for more than 6 months), 76.5 ± 4.9, 73.5 ± 5.7, 72.2 ± 6.2. At the end of each session, β 2-m plasma levels were found to be below 10 mg/L, with 3.4 mg/L being the lowest. The total amounts of β 2-m removed were 172.5 ± 22.3, 257.0 ± 75.6, 157.6 ± 32.2 and 429.8 mg/session at max. Two out of these three patients had a favorable effect on joint symptoms and ocular fundus. It can be concluded that this selective adsorption therapy may delay the progression of DRA, and is worth considering for wide application.
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Affiliation(s)
| | - N. Azuma
- Tokatsu Clinic Hospital, Matsudo
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Tsukiashi A, Nakaya M, Kobayashi F, Ohtani R, Nakamura M, Harrowfield JM, Kim Y, Hayami S. Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions. Inorg Chem 2018; 57:2834-2842. [PMID: 29461818 DOI: 10.1021/acs.inorgchem.7b03126] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Iron(III) spin-crossover (SCO) complexes [Fe(qsal)2]BS·MeOH·H2O (1), [Fe(qsal)2](NS)·MeOH (2), [Fe(qnal)2](NS) (3), and [Fe(qnal)2]PS·MeOH·CH2Cl2 (4) (Hqsal, N-(8-quinolinyl)salicylaldimine; Hqnal, N-(8-quinolinyl)-2-hydroxy-1-naphthaldimine; BS, benzenesulfonate; NS, 1-naphthalenesulfonate; PS, 1-pyrenesulfonate) have been synthesized and characterized by X-ray structure determinations and temperature-dependent magnetic susceptibility measurements. The aromatic counteranions BS, NS, and PS can be used for the tuning of intermolecular coupling through a variety of weak interactions. All of the complexes show temperature-dependent SCO behavior. but the light-induced excited spin-state trapping (LIESST) effect was observed only for 1, 3, and 4 when the samples were illuminated (λ 808 nm) for 1 h at 5 K. In particular, 59% of the LS form of 1 was converted to the metastable HS state by illumination, equal to the highest degree of conversion yet known for LIESST in [Fe(qsal)2]+ derivatives. The lack of a LIESST effect for 2 may be due to the relatively limited degree of interaction between the cations and anions in the lattice, reflected in a much longer minimum Fe···Fe separation in this complex in comparison to the others.
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Affiliation(s)
- Asami Tsukiashi
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Manabu Nakaya
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Fumiya Kobayashi
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Ryo Ohtani
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Masaaki Nakamura
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Jack M Harrowfield
- ISIS , Université de Strasbourg , 8 allée Gaspard Monge , 67083 Strasbourg , France
| | - Yang Kim
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Shinya Hayami
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan.,Institute of Pulsed Power Science (IPPS) , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
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Kobayashi F, Ohtani R, Kusumoto S, Lindoy LF, Hayami S, Nakamura M. Wheel-type heterometallic ferromagnetic clusters: [Ni 7−xM x(HL) 6(μ 3-OMe) 4(μ 3-OH) 2]Cl 2 (M = Zn, Co, Mn; x = 1, 3). Dalton Trans 2018; 47:16422-16428. [DOI: 10.1039/c8dt03275k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Wheel-type heptanuclear heterometallic clusters display metal ion dependent ferromagnetic properties and express single molecule magnet behavior based on the magnetic anisotropy.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Ryo Ohtani
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Sotaro Kusumoto
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | | | - Shinya Hayami
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Masaaki Nakamura
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
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Shindo K, Sato T, Satake A, Kurita N, Tsuchiya M, Ichinose Y, Hata T, Koh K, Yamashiro N, Kobayashi F, Nagasaka T, Takiyama Y. Skin vasomotor regulation in patients with multiple system atrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2588] [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: 11/24/2022]
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Sako R, Kobayashi F, Aida N, Furusawa M, Muramatsu T. Response of porcine epithelial rests of Malassez to stimulation by interleukin-6. Int Endod J 2017; 51:431-437. [PMID: 28898425 DOI: 10.1111/iej.12862] [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: 06/15/2017] [Accepted: 09/07/2017] [Indexed: 11/28/2022]
Abstract
AIM To investigate the proliferation and migration of epithelial cell rests of Malassez (ERM) after stimulation with IL-6. METHODOLOGY Porcine-derived ERM were seeded on Dulbecco's modified Eagle's Medium, and IL-6 (100 pg mL-1 ) was incorporated into the culture medium. The WST-1 assay was performed to evaluate cell proliferation, and absorption was measured at 450 nm. A wound-healing assay and immunofluorescence assay for integrin α3 were conducted to investigate migration. The Kruskal-Wallis test and the Mann-Whitney U-test with Bonferroni correction were used to analyse data of WST-1 and wound-healing assays. RESULTS Cell proliferation following the stimulation by IL-6 increased over time, with a significant increase being observed at 6 h (P < 0.05), but not in a concentration-dependent manner. Cell proliferation was significantly greater in IL-6-treated ERM than in nontreated ERM (P < 0.05). The results of the wound-healing assay revealed earlier closure in IL-6-treated ERM (P < 0.05). In the immunofluorescence assay, integrin α3 was detected at the edge of cell processes adjacent to the wound area. A neutralized antibody abrogated the effects of the IL-6 stimulation in cell proliferation and migration. CONCLUSION IL-6 promoted the proliferation and migration of porcine ERM in vitro.
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Affiliation(s)
- R Sako
- Department of Endodontics, Tokyo Dental College, Tokyo, Japan
| | - F Kobayashi
- Department of Endodontics, Tokyo Dental College, Tokyo, Japan
| | - N Aida
- Department of Endodontics, Tokyo Dental College, Tokyo, Japan
| | - M Furusawa
- Department of Endodontics, Tokyo Dental College, Tokyo, Japan
| | - T Muramatsu
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, Tokyo, Japan
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Kobayashi F, Koga A, Ohtani R, Hayami S, Nakamura M. Crystal structure of [2-({2-[(2-azanidylbenzylidene)amino]benzylidene}amino)-4-chlorophenolato]nickel(II). Acta Crystallogr E Crystallogr Commun 2017; 73:637-639. [PMID: 28435738 PMCID: PMC5382639 DOI: 10.1107/s2056989017004613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 03/23/2017] [Indexed: 11/13/2022]
Abstract
The metal atom of the title compound is four coordinated. The asymmetrically appended Cl atom and a widely spread π-conjugated system of the complex molecule construct the supramolecular structures of a hydrogen-bonded chain and a π–π interacted column. The title complex, [Ni(C20H14ClN3O)], with an asymmetrically chloride-appended Schiff base ligand has been synthesized and structurally characterized at 100 K. In the compound, the central nickel(II) ion has a square-planar coordination geometry with N3O donors of the π-conjugated tetradentate Schiff base ligand. In the crystal, the complexes are connected into an inversion dimer via an Ni⋯Ni interaction [3.1753 (5) Å] and a pair of π–π interactions [centroid–centroid distance = 3.8416 (16) Å]. The dimers are linked via a C—H⋯Cl hydrogen bond, forming a chain along the c-axis direction. The dimer chains interact with each other through π–π interactions [centroid–centroid distance = 3.8736 (16) Å], forming a layer expanding parallel to the ac plane.
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Kobayashi F, Ohtani R, Teraoka S, Kosaka W, Miyasaka H, Zhang Y, Lindoy LF, Hayami S, Nakamura M. Syntheses, structures and magnetic properties of tetranuclear cubane-type and heptanuclear wheel-type nickel(ii) complexes with 3-methoxysalicylic acid derivatives. Dalton Trans 2017. [DOI: 10.1039/c7dt01757j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Three mono- and multi-nuclear Ni(ii) compounds were synthesised and investigated.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Ryo Ohtani
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Saki Teraoka
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Wataru Kosaka
- Institute for Materials Research (IMR)
- Tohoku University
- Sendai 980-8577
- Japan
- Department of Chemistry
| | - Hitoshi Miyasaka
- Institute for Materials Research (IMR)
- Tohoku University
- Sendai 980-8577
- Japan
- Department of Chemistry
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organization
- Australia
| | | | - Shinya Hayami
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Masaaki Nakamura
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
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Kobayashi F, Odake S, Miura T, Akuzawa R. Pasteurization and changes of casein and free amino acid contents of bovine milk by low-pressure CO2 microbubbles. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.03.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aida N, Ushikubo T, Kobayashi F, Sako R, Suehara M, Furusawa M, Muramatsu T. Actin stabilization induces apoptosis in cultured porcine epithelial cell rests of Malassez. Int Endod J 2015; 49:663-9. [PMID: 26118334 DOI: 10.1111/iej.12494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 06/23/2015] [Indexed: 11/29/2022]
Abstract
AIM To test whether actin stabilization by jasplakinolide induces inhibition of cell viability and apoptosis in epithelial cell rests of Malassez (ERM). METHODOLOGY ERM derived from porcine were spread in a 96-well dish (5 × 10(4) /well) using Dulbecco's modified Eagle's medium. The actin-specific stabilization reagent, jasplakinolide, was incorporated into the culture medium and incubated for 24 h. To evaluate cell viability, the WST-1 assay was carried out and absorption (450 nm) was measured. To detect apoptotic cells, monoclonal antibody to single-strand DNA (ssDNA) was used and absorption (405 nm) was measured. Actin stabilization and apoptosis induced by jasplakinolide were morphologically investigated by staining with Alexa Fluor 568 phalloidin and observed under a fluorescent microscope. As a negative control, DMSO was used instead of jasplakinolide. Differences between the jasplakinolide-treated group and the control group were analysed statistically using the Student's t-test. RESULTS Cell viability decreased in a concentration-dependent manner, and cell viability in the jasplakinolide-treated ERM was lower than that in nontreated ERM (n = 16, P < 0.01). Apoptotic cells in the jasplakinolide-treated ERM were more frequently detected compared to that in nontreated ERM (n = 16, P < 0.01). Morphologically, shrinkage, irregular forms and fragmentation of nuclei suggesting apoptotic bodies were observed in jasplakinolide-treated ERM, whilst actin filaments were extended in non-treated ERM. CONCLUSION Actin stabilization by jasplakinolide inhibited cell viability and induced apoptosis in epithelial cell rests of Malassez.
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Affiliation(s)
- N Aida
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
| | - T Ushikubo
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
| | - F Kobayashi
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
| | - R Sako
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
| | - M Suehara
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
| | - M Furusawa
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
| | - T Muramatsu
- Department of Endodontics and Clinical Cariology, Tokyo Dental College, Tokyo, Japan
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Kanada-En’yo Y, Kobayashi F, Suhara T, Yoshida Y. Cluster features of stable and unstable nuclei in the p-shell region. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158800023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Shoda T, Futamura K, Kobayashi F, Saito H, Matsumoto K, Matsuda A. Cell type-dependent effects of corticosteroid on periostin production by primary human tissue cells. Allergy 2013; 68:1467-70. [PMID: 24118000 DOI: 10.1111/all.12240] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2013] [Indexed: 01/24/2023]
Abstract
Overproduction of periostin, an IL-13-inducible matricellular protein, despite corticosteroid treatment is thought to be involved in the chronicity of allergic inflammation seen in corticosteroid-refractory tissue fibrosis. Therefore, we hypothesized that some tissue cells must produce periostin in a corticosteroid-insensitive manner. Here, we show that IL-4 and IL-13 each induced comparable levels of periostin production by primary normal human fibroblasts and microvascular endothelial cells derived from lung and skin. Dexamethasone, a corticosteroid, completely inhibited IL-4/13-induced, but did not affect TGF-β-induced, periostin production by fibroblasts. In contrast, dexamethasone synergistically enhanced IL-4/13-induced periostin production by microvascular endothelial cells. TGF-β did not induce periostin production by microvascular endothelial cells. Our novel findings suggest that IL-4/13-induced microvascular endothelium-derived and/or TGF-β-induced fibroblast-derived periostin might play a pivotal role in corticosteroid-refractory tissue fibrosis, leading to chronic allergic inflammation in the lung and/or skin.
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Affiliation(s)
- T. Shoda
- Department of Health and Psychosocial Medicine; Aichi Medical University School of Medicine; Aichi
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - K. Futamura
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - F. Kobayashi
- Department of Health and Psychosocial Medicine; Aichi Medical University School of Medicine; Aichi
| | - H. Saito
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - K. Matsumoto
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - A. Matsuda
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
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Yamagishi K, Iso H, Kokubo Y, Saito I, Yatsuya H, Ishihara J, Inoue M, Tsugane S, Sobue T, Hanaoka T, Ogata J, Baba S, Mannami T, Okayama A, K. Y, Miyakawa K, Saito F, Koizumi A, Sano Y, Hashimoto I, Ikuta T, Tanaba Y, Miyajima Y, Suzuki N, Nagasawa S, Furusugi Y, Nagai N, Sanada H, Hatayama Y, Kobayashi F, Uchino H, Shirai Y, Kondo T, Sasaki R, Watanabe Y, Miyagawa Y, Kobayashi Y, Machida M, Kishimoto Y, Takara E, Fukuyama T, Kinjo M, Irei M, Sakiyama H, Imoto K, Yazawa H, Seo T, Seiko A, Ito F, Shoji F, Saito R, Murata A, Minato K, Motegi K, Fujieda T, Abe T, Katagiri M, Suzuki M, Matsui K, Doi M, Terao A, Ishikawa Y, Tagami T, Doi H, Urata M, Okamoto N, Ide F, Sueta H, Sakiyama H, Onga N, Takaesu H, Uehara M, Horii F, Asano I, Yamaguchi H, Aoki K, Maruyama S, Ichii M, Takano M, Matsushima S, Natsukawa S, Akabane M, Konishi M, Okada K, Honda Y, Sakurai KYS, Tsuchiya N, Sugimura H, Tsubono Y, Kabuto M, Tominaga S, Iida M, Ajiki W, Ioka A, Sato S, Yasuda N, Nakamura K, Kono S, Suzuki K, Takashima Y, Yoshida M, Maruyama E, Yamaguchi M, Matsumura Y, Sasaki S, Watanabe S, Kadowaki T, Noda M, Mizoue T, Kawaguchi Y, Shimizu H. Dietary intake of saturated fatty acids and incident stroke and coronary heart disease in Japanese communities: the JPHC Study. Eur Heart J 2013; 34:1225-32. [DOI: 10.1093/eurheartj/eht043] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ikeura H, Kobayashi F, Tamaki M. Ozone microbubble treatment at various water temperatures for the removal of residual pesticides with negligible effects on the physical properties of lettuce and cherry tomatoes. J Food Sci 2013; 78:T350-5. [PMID: 23311351 DOI: 10.1111/1750-3841.12007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 10/22/2012] [Indexed: 11/29/2022]
Abstract
UNLABELLED In this study, the effects of ozone microbubbles (OMCB) treatment at various water temperatures on the removal of residual fenitrothion (FT) pesticides and on the physical properties of lettuce and cherry tomatoes was examined. The residual FT percentage in lettuce and cherry tomatoes was shown decreased by using higher water temperatures, particularly at 30 °C, resulting in a decrease within the range of 32% to 52%, after the 20-min treatment. In addition, bubbling OMCB treatment did not alter the color and pulling strength of lettuce and cherry tomatoes. These results indicate that bubbling OMCB treatment at 30 °C is a highly effective method for the removal of FT residues in lettuce and cherry tomatoes, with relatively little effect on crop quality. PRACTICAL APPLICATION The bubbling OMCB has a potential of reducing the FT reduces on vegetables with no adverse effect on the sensory quality of vegetables.
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Affiliation(s)
- H Ikeura
- School of Agriculture, Meiji Univ., 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
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Kobayashi F, Ikeura H, Odake S, Tanimoto S, Hayata Y. Inactivation of Lactobacillus fructivorans suspended in various buffer solutions by low-pressure CO2 microbubbles. Lebensm Wiss Technol 2012. [DOI: 10.1016/j.lwt.2012.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kobayashi F, Fukui D, Kojima E, Masuda R. Population Genetic Structure of the Japanese Large-Footed Bat (Myotis macrodactylus) Along Three Rivers on Hokkaido Island, Northern Japan. Mammal Study 2012. [DOI: 10.3106/041.037.0306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Manenti L, Allinovi M, Vaglio A, Allegri L, Gnappi E, Simonetti G, Simonetti G, Vilalta R, Lapeyraque AL, Gruppo R, Sherwinter J, Smith J, Thornburg C, Jungraithmayr T, Wuehl E, Al-Akash S, Davin JC, Macher MA, Langman C, Camacho Diaz JA, Chin M, Goldsberry, Ms A, Hebbar S, Meyer C, Audhya P, Toto R, Warnock D, Pergola P, Chin M, Goldsberry, Ms A, Hebbar S, Meyer C, Audhya P, Imai E, Haneda M, Ito S, Kobayashi F, Yamasaki T, Chan J, Makino H. HUS and diabetic nephropathy. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kimura Y, Mukai R, Kobayashi F, Kobayashi M. Interpolative variable-speed repetitive control and its application to a deburring robot with cutting load control. Adv Robot 2012. [DOI: 10.1163/156855393x00032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Y. Kimura
- a Hitachi Metals, Ltd., 5200, Mikajiri, Kumagaya, Japan
| | - R. Mukai
- b Hitachi Metals, Ltd., 5200, Mikajiri, Kumagaya, Japan
| | - F. Kobayashi
- c Kyushu Institute of Technology, 680-4, Kawazu, Iizuka, Japan
| | - M. Kobayashi
- d Nagaoka University of Technology, Kamitomioka-cho, Nagaoka-shi, Niigata, Japan
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Nakayama M, Yamamoto K, Kobayashi F. Estimation of sleepiness using pupillary response and its frequency components. ACTA ACUST UNITED AC 2012; 8:342-65. [DOI: 10.1504/ijbra.2012.049621] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Imai E, Chan JCN, Ito S, Yamasaki T, Kobayashi F, Haneda M, Makino H. Effects of olmesartan on renal and cardiovascular outcomes in type 2 diabetes with overt nephropathy: a multicentre, randomised, placebo-controlled study. Diabetologia 2011; 54:2978-86. [PMID: 21993710 PMCID: PMC3210358 DOI: 10.1007/s00125-011-2325-z] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 09/01/2011] [Indexed: 01/01/2023]
Abstract
AIMS/HYPOTHESIS The renal and cardiovascular protective effects of angiotensin receptor blocker (ARB) remain controversial in type 2 diabetic patients treated with a contemporary regimen including an angiotensin converting enzyme inhibitor (ACEI). METHODS We examined the effects of olmesartan, an ARB, on primary composite outcome of doubling of serum creatinine, endstage renal disease and death in type 2 diabetic patients with overt nephropathy. Secondary outcome included composite cardiovascular outcomes, changes in renal function and proteinuria. Randomisation and allocation to trial group were carried out by a central computer system. Participants, caregivers, the people carrying out examinations and people assessing the outcomes were blinded to group assignment. RESULTS Five hundred and seventy-seven (377 Japanese, 200 Chinese) patients treated with antihypertensive therapy (73.5% [n = 424] received concomitant ACEI), were given either once-daily olmesartan (10-40 mg) (n = 288) or placebo (n = 289) over 3.2 ± 0.6 years (mean±SD). In the olmesartan group, 116 developed the primary outcome (41.1%) compared with 129 (45.4%) in the placebo group (HR 0.97, 95% CI 0.75, 1.24; p = 0.791). Olmesartan significantly decreased blood pressure, proteinuria and rate of change of reciprocal serum creatinine. Cardiovascular death was higher in the olmesartan group than the placebo group (ten vs three cases), whereas major adverse cardiovascular events (cardiovascular death plus non-fatal stroke and myocardial infarction) and all-cause death were similar between the two groups (major adverse cardiovascular events 18 vs 21 cases, all-cause deaths; 19 vs 20 cases). Hyperkalaemia was more frequent in the olmesartan group than the placebo group (9.2% vs 5.3%). CONCLUSIONS/INTERPRETATION Olmesartan was well tolerated but did not improve renal outcome on top of ACEI. TRIAL REGISTRATION ClinicalTrials.gov NCT00141453.
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Affiliation(s)
- E. Imai
- Department of Nephrology, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya, Aichi 466-8550 Japan
| | - J. C. N. Chan
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing Street, Shatin, Hong Kong, SAR China
| | - S. Ito
- Division of Nephrology, Endocrinology, and Vascular Medicine, Department of Clinical Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | | | | | - M. Haneda
- Second Department of Medicine, Asahikawa University of Medical Science, Asahikawa, Japan
| | - H. Makino
- Department of Medicine, Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Haruki M, Fukui N, Kobayashi F, Kihara SI, Takishima S. Entrainer Effect of N,N-Dimethylformamide on Solubility of Monomers for Aromatic Polyimide in Supercritical Carbon Dioxide. Ind Eng Chem Res 2011. [DOI: 10.1021/ie2013289] [Citation(s) in RCA: 9] [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: 11/29/2022]
Affiliation(s)
- Masashi Haruki
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Naoya Fukui
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Fumiya Kobayashi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Shin-ichi Kihara
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Shigeki Takishima
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
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