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Muramae N, Matsuda T, Inagaki S, Takahashi H, Abe K, Nakatani S, Takahashi M, Kato K, Sakaguchi K, Ogawa W. Determinants of phase angle in Japanese patients with diabetes. Diabetol Int 2023; 14:339-343. [PMID: 37781466 PMCID: PMC10533457 DOI: 10.1007/s13340-023-00633-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 05/08/2023] [Indexed: 10/03/2023]
Abstract
Phase angle, obtained using bioelectrical impedance analysis, non-invasively reflects the whole-body cellular condition and nutritional status and may be helpful as a prognostic factor. Patients with diabetes had a smaller phase angle than healthy subjects. However, the clinical significance of phase angle has not yet been elucidated. Therefore, the purpose of this study was to clarify the relationship between phase angle and HbA1c in patients with diabetes and the clinical relevance of phase angle. A retrospective, multicenter, cross-sectional study was conducted with Japanese patients with diabetes. Body composition was determined with bioelectrical impedance analysis, and this was used to obtain phase angle. Phase angle was assessed in relation to clinical parameters, body composition parameters, and HbA1c levels. A total of 655 patients were enrolled (400 men and 255 women, aged 57.1 ± 14.8 years, body mass index 25.6 ± 5.2 kg/m2, HbA1c 8.1 ± 1.9%). Even in patients with diabetes, the phase angle was higher in men than in women and did not differ between the types of diabetes. Multiple regression analysis, performed with phase angle as the objective variable, and age, sex, diabetes type, HbA1c, albumin level, and body mass index as explanatory variables, revealed that phase angle was negatively affected by HbA1c (B = - 0.043, 95% Confidence interval: - 0.07 to - 0.02, p < 0.001). HbA1c, age, sex, albumin level, and body mass index were independent determinants of phase angle in participants with diabetes.
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Affiliation(s)
- Naokazu Muramae
- Department of General Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
- Department of Diabetes and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan
| | | | - Satoshi Inagaki
- School of Nursing, Kobe City College of Nursing, Kobe, Japan
| | | | - Kozue Abe
- Matsuda Diabetes Clinic, Kobe, Japan
| | - Saki Nakatani
- Department of Nutrition, Kobe University Hospital, Kobe, Japan
| | | | - Kenji Kato
- Faculty of Nursing Science, Kobe Women’s University, Kobe, Japan
| | - Kazuhiko Sakaguchi
- Department of General Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
- Department of Diabetes and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Wataru Ogawa
- Department of Diabetes and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan
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2
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Inagaki S, Morimoto Y, Suzuki IK, Emoto K, Takeuchi S. Co-culture system of human skin equivalents with mouse neural spheroids. J Biosci Bioeng 2023; 136:239-245. [PMID: 37344278 DOI: 10.1016/j.jbiosc.2023.05.008] [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: 01/30/2023] [Revised: 04/25/2023] [Accepted: 05/17/2023] [Indexed: 06/23/2023]
Abstract
This study describes a co-culture system of human skin equivalents (HSEs) and dorsal root ganglion (DRG) neurons. We prepared spheroids of mouse DRG neurons with or without Schwann cells (SCs). Spheroids comprising DRG neurons and SCs showed longer neurite extensions than those comprising DRG neurons alone. Neurite extension of more than 1 mm was observed from spheroids cultured inside HSEs, whereas neurite extension was primarily observed on the surface of HSEs from spheroids cultured on HSEs. We propose that our model may be a useful tool for studying neurite extension in the human skin.
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Affiliation(s)
- Satoshi Inagaki
- Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuya Morimoto
- Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ikuo K Suzuki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuo Emoto
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; International Research Center for Neurointelligence, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shoji Takeuchi
- Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; International Research Center for Neurointelligence, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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Zhang P, Ohshima S, Zhao H, Kobayashi S, Kado S, Minami T, Kin F, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J. Rev Sci Instrum 2023; 94:093501. [PMID: 37671952 DOI: 10.1063/5.0162649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023]
Abstract
A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Kin
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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Higuchi Y, Miyagawa S, Oumi Y, Inagaki S, Tanaka S. CO 2-Induced Gate-Opening Adsorption on a Chabazite/Phillipsite Composite Zeolite Transformed from a Faujasite Zeolite Using Organic Structure-Directing Agent-Free Steam-Assisted Conversion. ACS Appl Mater Interfaces 2023; 15:38463-38473. [PMID: 37487143 DOI: 10.1021/acsami.3c07313] [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: 07/26/2023]
Abstract
Organic structure-directing agent-free steam-assisted conversion and Cs+ ion exchange were used to transform the faujasite (FAU)-type zeolite to the Cs+-type chabazite/phillipsite (CHA/PHI) composite zeolite. Compared with the pure PHI-type zeolite, the Cs+-type CHA/PHI zeolite showed gate-opening CO2 adsorption behavior and good thermal stability. In situ powder X-ray diffraction (PXRD) of the CO2 adsorption was measured to elucidate the mechanism for the gate-opening adsorption on the CHA/PHI zeolite. The Na+-type CHA/PHI zeolite did not show such adsorption behavior, and the PXRD pattern of the Na+-type CHA/PHI zeolite did not change with increasing CO2 partial pressure, which suggests that this unique adsorption behavior was caused by the PHI framework transition or Cs+ ions moving in both the CHA and PHI frameworks. Furthermore, in situ Fourier-transform infrared spectra of CO2 adsorption and CO2 breakthrough measurement on the Cs+-type CHA/PHI zeolite suggest that the CHA and PHI frameworks in the CHA/PHI zeolite shared eight-membered-ring windows and that CO2 molecules could easily diffuse from a CHA cage to a PHI framework. The ideal adsorbed solution theory was used to calculate the CO2/N2 separation selectivity for the Cs+-type CHA/PHI zeolite. At 298 and 318 K, the Cs+-type CHA/PHI composite zeolite showed a high CO2/N2 separation coefficient of >10,000 compared with other zeolites with high CO2 adsorption capacity. Furthermore, the CO2 working capacity was calculated for the Cs+-type CHA/PHI zeolite in both the pressure- and temperature-swing processes, and the results showed that the CHA/PHI composite zeolite could selectively separate CO2 from the CO2/N2 gas mixtures released from power generation plants operating using these processes.
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Affiliation(s)
- Yuto Higuchi
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
| | - Sana Miyagawa
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
| | - Yasunori Oumi
- Organization for Research and Community Development, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Shunsuke Tanaka
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
- Organization for Research and Development of Innovative Science and Technology (ORDIST), Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
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Hoxha K, Alikhani A, Inagaki S, Ferle M, Maier M, Nasseri MA. Modelling and Development of a Mechanical Eye for the Evaluation of Robotic Systems for Surgery. Annu Int Conf IEEE Eng Med Biol Soc 2023; 2023:1-4. [PMID: 38082703 DOI: 10.1109/embc40787.2023.10340226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Ophthalmic surgery, which addresses critical eye diseases such as retinal disorders, remains a formidable and arduous surgical pursuit. Nevertheless, with the advent of cutting-edge robotics and automation technology, significant advancement has been made in recent years to enhance the safety and efficacy of these procedures through meticulous research and development efforts. Ensuring the safe and effective execution of micro-surgical procedures requires stringent quality control measures, notably concerning evaluating and testing the devices utilized. During the development phase, these instruments must undergo extensive and continual evaluation by clinical practitioners to guarantee their safety and efficacy. Ideally, the test conditions should be identical to those of an actual operation. When testing robotic systems for ophthalmology, essential variables of the human eye, such as tissue properties and movement mechanisms, should be addressed. To minimize the discrepancy of tests and actual eye surgery conditions, in this paper, we propose a developed mechanical eye model to enable the realistic evaluation of ophthalmic surgical systems. After developing a virtual and physical model, the model was tested by an eye surgeon. The eye surgeon rated the model with four out of five possible points.Clinical relevance- This method ensures minimal discrepancy in verification of ophthalmic surgical devices by allowing the mechanical eye model to behave similar to the human eye, thus providing a realistic surgical procedure.
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Alikhani A, Osner S, Dehghani S, Busam B, Inagaki S, Maier M, Navab N, Nasseri MA. RCIT: A Robust Catadioptric-based Instrument 3D Tracking Method For Microsurgical Instruments In a Single-Camera System. Annu Int Conf IEEE Eng Med Biol Soc 2023; 2023:1-5. [PMID: 38083453 DOI: 10.1109/embc40787.2023.10340955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
The field of robotic microsurgery and micro-manipulation has undergone a profound evolution in recent years, particularly with regard to the accuracy, precision, versatility, and dexterity. These advancements have the potential to revolutionize high-precision biomedical procedures, such as neurosurgery, vitreoretinal surgery, and cell micro-manipulation. However, a critical challenge in developing micron-precision robotic systems is accurately verifying the end-effector motion in 3D. Such verification is complicated due to environmental vibrations, inaccuracy of mechanical assembly, and other physical uncertainties. To overcome these challenges, this paper proposes a novel single-camera framework that utilizes mirrors with known geometric parameters to estimate the 3D position of the microsurgical instrument. Euclidean distance between reconstructed points by the algorithm and the robot movement recorded by the highly accurate encoders is considered an error. Our method exhibits an accurate estimation with the mean absolute error of 0.044 mm when tested on a 23G surgical cannula with a diameter of 0.640 mm and operates at a resolution of 4024 × 3036 at 30 frames per second.
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Hirakida H, Okumura T, Fujita R, Kuse Y, Mizoguchi T, Inagaki S, Nakamura S, Shimazawa M, Hara H. VGF nerve growth factor inducible has the potential to protect pancreatic β-cells. J Endocrinol 2023; 257:JOE-22-0267. [PMID: 36988989 DOI: 10.1530/joe-22-0267] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 03/28/2023] [Indexed: 03/30/2023]
Abstract
VGF nerve growth factor inducible (VGF) is a secreted polypeptide involved in metabolic regulation. VGF derived peptides have been reported to regulate insulin secretion in the plasma of patients with type 2 diabetes and model mice. However, the protective effects of VGF on pancreatic β-cells in diabetic model are not well understood. In this study, we aimed to elucidate the β-cell protective effect of VGF on a streptozotocin (STZ)-induced diabetic model using VGF overexpressing mice and also examined the therapeutic effect by a small molecule, SUN N8075 which is an inducer of VGF. VGF overexpressing mice improved blood glucose levels and maintained β-cell mass, compared to WT mice on STZ-induced diabetic model. In addition, VGF-overexpressing mice showed better glucose tolerance than WT mice. In culture, AQEE-30, a VGF derived peptide, suppressed STZ-induced β-cell death in vitro and attenuated the decrease in the phosphorylation of Akt and GSK3β. Furthermore, SUN N8075 suppressed the blood glucose levels and increased VGF expression in the pancreatic islet. SUN N8075 also protected STZ-induced β-cell death in vitro. These findings indicate that VGF plays a hypoglycaemic role in response to blood glucose levels in diabetes and protecting β-cells from STZ-induced cell death. Therefore, VGF and its inducer have the therapeutic potential by preserving β-cells in diabetes.
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Affiliation(s)
- Hikari Hirakida
- H Hirakida, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Taiga Okumura
- T Okumura, Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Ryosuke Fujita
- R Fujita, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yoshiki Kuse
- Y Kuse, Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Takahiro Mizoguchi
- T Mizoguchi, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- S Inagaki, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- S Nakamura, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- M Shimazawa, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- H Hara, Molecular Pharmacology Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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Aoshima K, Inagaki S, Takagi Y, Nakamura S, Hara H, Shimazawa M. ALK5 inhibitor acts on trabecular meshwork cell and reduces intraocular pressure. Exp Eye Res 2023; 227:109382. [PMID: 36634838 DOI: 10.1016/j.exer.2023.109382] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/27/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
Intraocular pressure (IOP) is the most important risk factor for the onset and progression of glaucoma. IOP reduction has been proven effective in the treatment of glaucoma. IOP is controlled by the production and outflow of the aqueous humor (AH), and the trabecular meshwork (TM) is the main pathway for AH drainage from the eye. However, there are few conventional IOP-lowering treatments that target TM, and there is a need for such treatments. In this study, we screened for the expression level of fibronectin as an indicator and identified an activin receptor-like kinase (ALK) 5 inhibitor. Western blot analysis showed that SB431542, an ALK 5 inhibitor, reduced fibronectin and α-SMA expression. Moreover, a single dose of the ALK5 inhibitor SB431542 reduced IOP in mice, and the IOP-lowering effect of the ALK5 inhibitor was greater than that of a Rho-associated coiled-coil-containing protein kinase inhibitor (Y-27632). Repeated dosing with ALK5 inhibitor eye drops (once daily) enhanced the murine IOP-lowering effect. Furthermore, ALK5 inhibition decreased the expression of extracellular matrix (ECM) mRNA and suppressed ECM production. These findings suggest that ALK5 inhibitors may contribute to the development of new treatments for glaucoma that target the TM.
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Affiliation(s)
- Kota Aoshima
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuya Takagi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan; Laboratory of Collaborative Research for Innovative Drug Discovery, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan; Laboratory of Collaborative Research for Innovative Drug Discovery, Gifu Pharmaceutical University, Gifu, Japan.
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Inagaki S, Matsuda T, Muramae N, Abe K, Kato K. Diabetes-related shame among people with type 2 diabetes: an internet-based cross-sectional study. BMJ Open Diabetes Res Care 2022; 10:10/6/e003001. [PMID: 36593661 PMCID: PMC9748962 DOI: 10.1136/bmjdrc-2022-003001] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/29/2022] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Emerging evidence suggests that diabetes stigma and negative emotions associated with it may impair the quality of life of people with diabetes. Among these psychological distresses, shame is considered the most distressing of all human emotional experiences and may be a condition to which diabetes clinicians should pay attention. This epidemiological study focused on diabetes-related shame and aimed to determine the prevalence of diabetes-related shame, its factors, and its association with psychological indicators. RESEARCH DESIGN AND METHODS A cross-sectional online survey was conducted among people with type 2 diabetes preregistered with a research firm. The questionnaire included experience of diabetes-related shame and demographic data such as age, clinical characteristic measures such as hemoglobin A1c (HbA1c), and psychological indicators, including the WHO Five Well-Being Index (WHO-5) and Problem Areas In Diabetes-5 (PAID-5). Differences in each indicator between people with diabetes who experienced shame and those who did not were analyzed with the unpaired t-test. As supplemental analysis, binomial logistic regression analysis was used to identify factors associated with the prevalence of diabetes-related shame. RESULTS Of the 510 participants, 32.9% experienced diabetes-related shame and 17.5% concealed their disease from colleagues or friends. Those who had experienced diabetes-related shame showed significantly lower WHO-5 and higher PAID-5 scores (p<0.001). However, no significant difference was found in HbA1c (p=0.36). Binomial logistic regression revealed that women, young adults, those without a college degree, those with low self-efficacy, and those with a strong sense of financial burden or external pressure were at higher risk of experiencing diabetes-related shame. CONCLUSIONS Among people with type 2 diabetes mellitus, diabetes-related shame was associated with diabetes-specific emotional distress and low psychological well-being. Further research and care development are needed to address diabetes-related shame and improve the quality of life of people with diabetes.
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Affiliation(s)
- Satoshi Inagaki
- Faculty of Nursing, Kobe City College of Nursing, Kobe, Japan
| | | | - Naokazu Muramae
- Division of General Internal Medicine, Kobe University School of Medicine, Kobe, Japan
| | - Kozue Abe
- Matsuda Diabetes Clinic, Kobe, Japan
| | - Kenji Kato
- Faculty of Nursing, Kobe Women's University, Kobe, Japan
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10
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Li J, Mayoral A, Kubota Y, Inagaki S, Yu J, Terasaki O. Direct TEM Observation of Vacancy-Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts. Angew Chem Int Ed Engl 2022; 61:e202211196. [PMID: 36194383 PMCID: PMC9827827 DOI: 10.1002/anie.202211196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Indexed: 11/06/2022]
Abstract
Incorporating hetero-metal-atom, e.g., titanium, into zeolite frameworks can enhance the catalytic activity and selectivity in oxidation reactions. However, the rational design of zeolites containing titanium at specific sites is difficult because the precise atomic structure during synthesis process remained unclear. Here, a titanosilicate with predictable titanium distribution was synthesized by mediating vacancies in a defective MSE-type zeolite precursor, based on a pre-designed synthetic route including modification of vacancies followed by titanium insertion, where electron microscopy (EM) plays a key role at each step resolving the atomic structure. Point defects including vacancies in the precursor and titanium incorporated into the vacancy-related positions have been directly observed. The results provide insights into the role of point defects in zeolites towards the rational synthesis of zeolites with desired microscopic arrangement of catalytically active sites.
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Affiliation(s)
- Junyan Li
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryInternational Center of Future ScienceJilin UniversityChangchun130012China,Centre for High-resolution Electron Microscopy (CħEM)School of Physical Science and TechnologyShanghaiTech UniversityShanghai201210China,Shanghai Key Laboratory of High-resolution Electron MicroscopyShanghaiTech UniversityShanghai201210China
| | - Alvaro Mayoral
- Centre for High-resolution Electron Microscopy (CħEM)School of Physical Science and TechnologyShanghaiTech UniversityShanghai201210China,Shanghai Key Laboratory of High-resolution Electron MicroscopyShanghaiTech UniversityShanghai201210China,Instituto de Nanociencia y Materiales de Aragón (INMA)CSIC-Universidad de Zaragoza50009ZaragozaSpain,Laboratorio de Microscopias Avanzadas (LMA)Universidad de Zaragoza50180ZaragozaSpain
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical EngineeringYokohama National University79-5 TokiwadaiHodogaya-ku, Yokohama240-8501Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical EngineeringYokohama National University79-5 TokiwadaiHodogaya-ku, Yokohama240-8501Japan
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryInternational Center of Future ScienceJilin UniversityChangchun130012China
| | - Osamu Terasaki
- Centre for High-resolution Electron Microscopy (CħEM)School of Physical Science and TechnologyShanghaiTech UniversityShanghai201210China,Shanghai Key Laboratory of High-resolution Electron MicroscopyShanghaiTech UniversityShanghai201210China
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11
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Zhang P, Ohshima S, Zhao H, Deng C, Kobayashi S, Kado S, Minami T, Matoike R, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Development and initial results of 320 GHz interferometer system in Heliotron J. Rev Sci Instrum 2022; 93:113519. [PMID: 36461432 DOI: 10.1063/5.0101808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/02/2022] [Indexed: 06/17/2023]
Abstract
A new 320 GHz solid-state source interferometer is installed in the Heliotron J helical device to explore the physics of high-density plasmas (ne > 2-3 × 1019 m-3, typically) realized with advanced fueling techniques. This interferometry system is of the Michelson type and is based on the heterodyne principle, with two independent solid-state sources that can deliver an output power of up to 50 mW. A high time resolution measurement of <1 µs can be derived by tuning the frequency of one source in the frequency range of 312-324 GHz on the new system, which can realize the fluctuation measurement. We successfully measured the line-averaged electron density in high-density plasma experiments. The measured density agreed well with a microwave interferometer measurement using a different viewing chord, demonstrating that the new system can be used for routine diagnostics of electron density in Heliotron J.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Deng
- University of California, Los Angeles, California 90095-1594, USA
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - R Matoike
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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12
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Tokuzawa T, Nasu T, Inagaki S, Moon C, Ido T, Idei H, Ejiri A, Imazawa R, Yoshida M, Oyama N, Tanaka K, Ida K. 3D metal powder additive manufacturing phased array antenna for multichannel Doppler reflectometer. Rev Sci Instrum 2022; 93:113535. [PMID: 36461436 DOI: 10.1063/5.0101723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 09/07/2022] [Indexed: 06/17/2023]
Abstract
Measuring the time variation of the wavenumber spectrum of turbulence is important for understanding the characteristics of high-temperature plasmas, and the application of a Doppler reflectometer with simultaneous multi-frequency sources is expected. To implement this diagnostic in future fusion devices, the use of a phased array antenna (PAA) that can scan microwave beams without moving antennas is recommended. Since the frequency-scanning waveguide leaky-wave antenna-type PAA has a complex structure, we have investigated its characteristics by modeling it with 3D metal powder additive manufacturing (AM). First, a single waveguide is fabricated to understand the characteristics of 3D AM techniques, and it is clear that there are differences in performance depending on the direction of manufacture and surface treatment. Then, a PAA is made, and it is confirmed that the beam can be emitted in any direction by frequency scanning. The plasma flow velocity can be measured by applying the 3D manufacturing PAA to plasma measurement.
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Affiliation(s)
- T Tokuzawa
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - T Nasu
- The Graduate University for Advanced Studies, SOKENDAI, Toki 509-5292, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - C Moon
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - T Ido
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - H Idei
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - A Ejiri
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - R Imazawa
- National Institutes for Quantum Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan
| | - M Yoshida
- National Institutes for Quantum Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan
| | - N Oyama
- National Institutes for Quantum Science and Technology, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan
| | - K Tanaka
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - K Ida
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
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13
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Nasu T, Tokuzawa T, Tsujimura TI, Ida K, Yoshinuma M, Kobayashi T, Tanaka K, Emoto M, Inagaki S, Ejiri A, Kohagura J. Receiver circuit improvement of dual frequency-comb ka-band Doppler backscattering system in the large helical device (LHD). Rev Sci Instrum 2022; 93:113518. [PMID: 36461466 DOI: 10.1063/5.0101588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/04/2022] [Indexed: 06/17/2023]
Abstract
Doppler-backscattering (DBS) has been used in several fusion plasma devices because it can measure the perpendicular velocity of electron density perturbation v⊥, the radial electric field Er, and the perpendicular wavenumber spectrum S(k⊥) with high wavenumber and spatial resolution. In particular, recently constructed frequency comb DBS systems enable observation of turbulent phenomena at multiple observation points in the radial direction. A dual-comb microwave DBS system has been developed for the large helical device plasma measurement. Since it is desirable to control the gain of each frequency-comb separately, a frequency-comb DBS system was developed with a function to adjust the gain of the scattered signal intensity of each channel separately. A correction processing method was also developed to correct the amplitude ratio and the phase difference between the in-phase and quadrature-phase signals of the scattered signals. As a result, the error in Doppler-shift estimation required to observe vertical velocity and the radial electric field was reduced, which enables more precise measurements.
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Affiliation(s)
- T Nasu
- School of Physics Science, The Graduate University for Advanced Studies, Toki 509-5292, Japan
| | - T Tokuzawa
- School of Physics Science, The Graduate University for Advanced Studies, Toki 509-5292, Japan
| | - T I Tsujimura
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - K Ida
- School of Physics Science, The Graduate University for Advanced Studies, Toki 509-5292, Japan
| | - M Yoshinuma
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - T Kobayashi
- School of Physics Science, The Graduate University for Advanced Studies, Toki 509-5292, Japan
| | - K Tanaka
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - M Emoto
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - A Ejiri
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - J Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
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14
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Li J, Mayoral A, Kubota Y, Inagaki S, Yu J, Terasaki O. Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211196] [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: 11/10/2022]
Affiliation(s)
- Junyan Li
- Jilin University State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry; International Center of Future Science CHINA
| | - Alvaro Mayoral
- CSIC: Consejo Superior de Investigaciones Cientificas Instituto de Nanociencia y Materiales de Aragon (INMA)-Universidad de Zaragoza Calle de Pedro Cerbuna 50009 Zaragoza SPAIN
| | - Yoshihiro Kubota
- Yokohama National University: Yokohama Kokuritsu Daigaku Division of Materials Science and Chemical Engineering JAPAN
| | - Satoshi Inagaki
- Yokohama National University: Yokohama Kokuritsu Daigaku Division of Materials Science and Chemical Engineering Yokohama National University JAPAN
| | - Jihong Yu
- Jilin University State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry; International Center of Future Science CHINA
| | - Osamu Terasaki
- ShanghaiTech University School of Physical Science and Technology Centre for High-resolution Electron Microscopy (CħEM), CHINA
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15
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Hirakida H, Nakamura S, Inagaki S, Tsuji S, Hayashi M, Shimazawa M, Hara H. Anti-diabetic effects of astaxanthin-rich extract derived from Paracoccus carotinifaciens on pancreatic β cells. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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16
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Prajapati R, Jadav D, Pandey M, Nishimura K, Inagaki S, Kubota Y, Bandyopadhyay R, Bandyopadhyay M. Synthesis of hierarchical silicoaluminophosphate (SAPO) molecular sieves by post‐synthetic modification and their catalytic application. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200185] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Divya Jadav
- Institute of Infrastructure Technology Research and Management Basic Sciences INDIA
| | - Madhu Pandey
- Institute of Infrastructure Technology Research and Management Basic Sciences INDIA
| | - Keisuke Nishimura
- Yokohama National University: Yokohama Kokuritsu Daigaku Material Science and Engineering JAPAN
| | - Satoshi Inagaki
- Yokohama National University: Yokohama Kokuritsu Daigaku Material Science and Engineering Tokyo JAPAN
| | - Yoshihiro Kubota
- Yokohama National University: Yokohama Kokuritsu Daigaku Material Science and Engineering Tokyo JAPAN
| | | | - Mahuya Bandyopadhyay
- Institute of Infrastructure Technology Research and Management Chemistry Khokhara CircleManinagar (East) 380008 Ahmedabad INDIA
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17
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Ishihara I, Inagaki S, Oosawa A, Umeda S, Hanafusa Y, Morita S, Maruyama H. Effects of an ethics education program on nurses' moral efficacy in an acute health-care facility. J Nurs Manag 2022; 30:2207-2215. [PMID: 35258139 DOI: 10.1111/jonm.13579] [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: 10/09/2021] [Revised: 02/27/2022] [Accepted: 03/02/2022] [Indexed: 12/01/2022]
Abstract
AIM This study aimed to evaluate an ethics education program developed to increase moral efficacy among nurses in an acute health-care facility. BACKGROUND Moral distress among nurses can cause serious problems in terms of hospital organizations and patient safety. To reduce moral distress and promote professional confidence in nursing practice, a strategic intervention program is needed. METHODS An ethics education program introduced methods to increase self-efficacy in accordance with Bandura's social cognitive theory. Eight nurses were recruited from 2017 to 2019 and all conversations and discussions regarding the ethics consultation were recorded on IC recorders and analyzed qualitatively. RESULTS Four core categories-Convinced to take an active role in ethical issues; Progressed in nursing practice with ethical agency; Experienced professional transformation; and Empowered by the presence of colleagues-emerged as outcomes of the ethics education program that related to moral efficacy. CONCLUSIONS The four core outcome categories suggested that the participants had gained confidence after taking part in the ethical education program. IMPLICATIONS FOR NURSING MANAGEMENT The results of the participants' described behaviors and actions suggested that they would be proactive in contributing to reductions in moral distress in the future.
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18
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Petkov PS, Simeonova K, Koleva IZ, Aleksandrov HA, Kubota Y, Inagaki S, Valtchev V, Vayssilov GN. Defect Formation, T-Atom Substitution and Adsorption of Guest Molecules in MSE-Type Zeolite Framework-DFT Modeling. Molecules 2021; 26:7296. [PMID: 34885878 PMCID: PMC8659101 DOI: 10.3390/molecules26237296] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/27/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
We used computational modeling, based on Density Functional Theory, to help understand the preference for the formation of silanol nests and the substitution of Si by Ti or Al in different crystallographic positions of the MSE-type framework. All these processes were found to be energetically favorable by more than 100 kJ/mol. We suggested an approach for experimental identification of the T atom position in Ti-MCM-68 zeolite via simulation of infrared spectra of pyridine and acetonitrile adsorption at Ti. The modeling of adsorption of hydrogen peroxide at Ti center in the framework has shown that the molecular adsorption was preferred over the dissociative adsorption by 20 to 40 kJ/mol in the presence or absence of neighboring T-atom vacancy, respectively.
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Affiliation(s)
- Petko St. Petkov
- Faculty of Chemistry and Pharmacy, University of Sofia, 1 James Bourchier Blvd., 1164 Sofia, Bulgaria; (K.S.); (I.Z.K.); (H.A.A.); (G.N.V.)
| | - Kristina Simeonova
- Faculty of Chemistry and Pharmacy, University of Sofia, 1 James Bourchier Blvd., 1164 Sofia, Bulgaria; (K.S.); (I.Z.K.); (H.A.A.); (G.N.V.)
| | - Iskra Z. Koleva
- Faculty of Chemistry and Pharmacy, University of Sofia, 1 James Bourchier Blvd., 1164 Sofia, Bulgaria; (K.S.); (I.Z.K.); (H.A.A.); (G.N.V.)
| | - Hristiyan A. Aleksandrov
- Faculty of Chemistry and Pharmacy, University of Sofia, 1 James Bourchier Blvd., 1164 Sofia, Bulgaria; (K.S.); (I.Z.K.); (H.A.A.); (G.N.V.)
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; (Y.K.); (S.I.)
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; (Y.K.); (S.I.)
| | - Valentin Valtchev
- Laboratoire Catalyse et Spectrochimie, Normandie Université, ENSICAEN, CNRS, 6 Boulevard Maréchal Juin, 14050 Caen, France;
| | - Georgi N. Vayssilov
- Faculty of Chemistry and Pharmacy, University of Sofia, 1 James Bourchier Blvd., 1164 Sofia, Bulgaria; (K.S.); (I.Z.K.); (H.A.A.); (G.N.V.)
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19
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Tokuda S, Kawachi Y, Sasaki M, Arakawa H, Yamasaki K, Terasaka K, Inagaki S. Bayesian inference of ion velocity distribution function from laser-induced fluorescence spectra. Sci Rep 2021; 11:20810. [PMID: 34675232 PMCID: PMC8531337 DOI: 10.1038/s41598-021-00138-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/06/2021] [Indexed: 11/21/2022] Open
Abstract
The velocity distribution function is a statistical description that connects particle kinetics and macroscopic parameters in many-body systems. Laser-induced fluorescence (LIF) spectroscopy is utilized to measure the local velocity distribution function in spatially inhomogeneous plasmas. However, the analytic form of such a function for the system of interest is not always clear under the intricate factors in non-equilibrium states. Here, we propose a novel approach to select the valid form of the velocity distribution function based on Bayesian statistics. We formulate the Bayesian inference of ion velocity distribution function and apply it to LIF spectra locally observed at several positions in a linear magnetized plasma. We demonstrate evaluating the spatial inhomogeneity by verifying each analytic form of the local velocity distribution function. Our approach is widely applicable to experimentally establish the velocity distribution function in plasmas and fluids, including gases and liquids.
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Affiliation(s)
- S Tokuda
- Research Institute for Information Technology, Kyushu University, Kasuga, 816-8580, Japan.
| | - Y Kawachi
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, 816-8580, Japan
| | - M Sasaki
- College of Industrial Technology, Nihon University, Narashino, 275-8575, Japan
| | - H Arakawa
- Institute of Science and Engineering, Shimane University, Matsue, 690-8504, Japan
| | - K Yamasaki
- Graduate School of Advanced Science and Engineering, Hiroshima University, Hiroshima, 730-8511, Japan
| | - K Terasaka
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, 816-8580, Japan
| | - S Inagaki
- Research Center for Plasma Turbulence, Kyushu University, Kasuga, 816-8580, Japan. .,Research Institution for Applied Mechanics, Kyushu University, Kasuga, 816-8580, Japan.
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20
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Aoyama Y, Inagaki S, Aoshima K, Iwata Y, Nakamura S, Hara H, Shimazawa M. Involvement of endoplasmic reticulum stress in rotenone-induced leber hereditary optic neuropathy model and the discovery of new therapeutic agents. J Pharmacol Sci 2021; 147:200-207. [PMID: 34384568 DOI: 10.1016/j.jphs.2021.07.003] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/15/2021] [Accepted: 07/05/2021] [Indexed: 11/18/2022] Open
Abstract
Leber hereditary optic neuropathy (LHON) is caused by mitochondrial DNA mutations and is the most common inherited mitochondrial disease. It is responsible for central vision loss in young adulthood. However, the precise mechanisms of onset are unknown. This study aimed to elucidate the mechanisms underlying LHON pathology and to discover new therapeutic agents. First, we assessed whether rotenone, a mitochondrial complex Ⅰ inhibitor, induced retinal degeneration such as that in LHON in a mouse model. Rotenone decreased the thickness of the inner retina and increased the expression levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG) and immunoglobulin heavy-chain binding protein (BiP). Second, we assessed whether rotenone reproduces LHON pathologies on RGC-5, a neural progenitor cell derived from the retina. Rotenone increased the cell death rate, ROS production and the expression levels of ER stress markers. During chemical compounds screening, we used anti-oxidative compounds, ER stress inhibitors and anti-inflammatory compounds in a rotenone-induced in vitro model. We found that SUN N8075, an ER stress inhibitor, reduced mitochondrial ROS production and improved the mitochondrial membrane potential. Consequently, the ER stress response is strongly related to the pathologies of LHON, and ER stress inhibitors may have a protective effect against LHON.
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MESH Headings
- Aniline Compounds/pharmacology
- Animals
- Cells, Cultured
- DNA, Mitochondrial/genetics
- Disease Models, Animal
- Drug Discovery
- Drug Evaluation, Preclinical
- Endoplasmic Reticulum Stress/drug effects
- Endoplasmic Reticulum Stress/genetics
- Endoplasmic Reticulum Stress/physiology
- Male
- Membrane Potential, Mitochondrial/drug effects
- Membrane Potential, Mitochondrial/genetics
- Mice, Inbred C57BL
- Molecular Targeted Therapy
- Mutation
- Optic Atrophy, Hereditary, Leber/chemically induced
- Optic Atrophy, Hereditary, Leber/drug therapy
- Optic Atrophy, Hereditary, Leber/genetics
- Optic Atrophy, Hereditary, Leber/pathology
- Piperazines/pharmacology
- Reactive Oxygen Species/metabolism
- Retina/drug effects
- Retina/metabolism
- Retina/pathology
- Retinal Degeneration/chemically induced
- Retinal Degeneration/genetics
- Retinal Degeneration/pathology
- Rotenone/adverse effects
- Mice
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Affiliation(s)
- Yakumo Aoyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Kota Aoshima
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Iwata
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
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21
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Sheikh AM, Wada Y, Tabassum S, Inagaki S, Mitaki S, Yano S, Nagai A. Aggregation of Cystatin C Changes Its Inhibitory Functions on Protease Activities and Amyloid β Fibril Formation. Int J Mol Sci 2021; 22:ijms22189682. [PMID: 34575849 PMCID: PMC8465189 DOI: 10.3390/ijms22189682] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/01/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Cystatin C (CST3) is an endogenous cysteine protease inhibitor, which is implicated in cerebral amyloid angiopathy (CAA). In CAA, CST3 is found to be aggregated. The purpose of this study is to investigate whether this aggregation could alter the activity of the protein relevant to the molecular pathology of CAA. A system of CST3 protein aggregation was established, and the aggregated protein was characterized. The results showed that CST3 aggregated both at 80 °C without agitation, and at 37 °C with agitation in a time-dependent manner. However, the levels of aggregation were high and appeared earlier at 80 °C. Dot-blot immunoassay for oligomers revealed that CST3 could make oligomeric aggregates at the 37 °C condition. Electron microscopy showed that CST3 could make short fibrillary aggregates at 37 °C. Cathepsin B activity assay demonstrated that aggregated CST3 inhibited the enzyme activity less efficiently at pH 5.5. At 7.4 pH, it lost the inhibitory properties almost completely. In addition, aggregated CST3 did not inhibit Aβ1-40 fibril formation, rather, it slightly increased it. CST3 immunocytochemistry showed that the protein was positive both in monomeric and aggregated CST3-treated neuronal culture. However, His6 immunocytochemistry revealed that the internalization of exogenous recombinant CST3 by an astrocytoma cell culture was higher when the protein was aggregated compared to its monomeric form. Finally, MTT cell viability assay showed that the aggregated form of CST3 was more toxic than the monomeric form. Thus, our results suggest that aggregation may result in a loss-of-function phenotype of CST3, which is toxic and responsible for cellular degeneration.
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Affiliation(s)
- Abdullah Md. Sheikh
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (A.M.S.); (S.T.); (S.Y.)
| | - Yasuko Wada
- Department of Neurology, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (Y.W.); (S.I.); (S.M.)
| | - Shatera Tabassum
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (A.M.S.); (S.T.); (S.Y.)
| | - Satoshi Inagaki
- Department of Neurology, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (Y.W.); (S.I.); (S.M.)
| | - Shingo Mitaki
- Department of Neurology, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (Y.W.); (S.I.); (S.M.)
| | - Shozo Yano
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (A.M.S.); (S.T.); (S.Y.)
| | - Atsushi Nagai
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (A.M.S.); (S.T.); (S.Y.)
- Department of Neurology, Faculty of Medicine, Shimane University, 89-1 Enya Cho, Izumo 693-8501, Japan; (Y.W.); (S.I.); (S.M.)
- Correspondence: ; Tel./Fax: +81-0853-20-2198
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22
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Liu Q, Sugimoto R, Inagaki S, Kubota Y. Introduction of Hierarchical Structure into YNU-5 Zeolite and Its Enhanced Catalytic Performance for Hexane Cracking. CHEM LETT 2021. [DOI: 10.1246/cl.210368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Qing Liu
- Division of Material Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Ryota Sugimoto
- Division of Material Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Satoshi Inagaki
- Division of Material Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Yoshihiro Kubota
- Division of Material Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
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23
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Kubota H, Toyao T, Maeno Z, Inomata Y, Murayama T, Nakazawa N, Inagaki S, Kubota Y, Shimizu KI. Analogous Mechanistic Features of NH 3-SCR over Vanadium Oxide and Copper Zeolite Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02860] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroe Kubota
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Yusuke Inomata
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Toru Murayama
- Research Center for Hydrogen Energy-Based Society, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
- Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Naoto Nakazawa
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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Inagaki S, Shimazawa M, Otsu W, Araki T, Numata Y, Nakamura S, Tsusaki H, Hara H. Creation of Retinal Vein Occlusion Model in Cynomolgus Monkeys and Determination of its Pathological Features. Curr Neurovasc Res 2021; 18:123-133. [PMID: 32867658 DOI: 10.2174/1567202617999200831151118] [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: 07/06/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE A retinal vein occlusion (RVO) is a relatively common retinal vascular disorder, especially in the elderly. Many experiments have been performed on patients with an RVO but performing any type of experiments and especially longitudinal experiments on humans is difficult, if not impossible, on ethical grounds. Therefore, we have created a retinal vein occlusion (RVO) model by laser irradiation of cynomolgus monkeys after intravenous injection of rose bengal. We evaluated the pathological changes of the retina, and the effects of ranibizumab, an anti-vascular endothelial growth factor (VEGF) antibody, on the characteristics of the RVO. METHODS The integrity of the vascular system was evaluated by fluorescein angiography (FA), and the retinal thickness and volume were determined by optical coherence tomography (OCT). The cytokines and growth factors in the aqueous humour were identified by multiplex profiling. RESULTS Our results showed that ranibizumab decreased the degree of vascular leakage and retinal edema at 1-3 days (acute phase) and 3-7 days (subacute phase), and suppressed foveal thinning at 28-42 days (chronic phase) after the laser irradiation. Ranibizumab also decreased the area of the foveal avascular zone, and the area was negatively and significantly correlated with the thickness of the ganglion cell layer (GCL) complex. Furthermore, ranibizumab reduced the increased expression of VEGF in the aqueous humor, but did not affect the expressions of interleukin-6 (IL-6), monocyte chemotactic protein-1 (MCP-1), angiopoietin-1 (ANG-1), or angiopoietin-2 (ANG-2). These findings suggest that ranibizumab attenuates the retinal edema and subsequent retinal atrophy in part by neutralizing VEGF. However, other cytokines and growth factors were also affected by the ranibizumab, which suggests that not only VEGF but also other unidentified agents might play a role in the pathogenesis of the RVO. CONCLUSION We have created a non-human primate RVO model, which resembles the clinical RVO pathology. In this model, an injection of ranibizumab leads to a reduction in vascular leakage and the retinal thickness and volume by blocking the expression of VEGF. Our model might be useful for investigating the pathological mechanisms of RVOs and explore new therapeutic agents for RVO.
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Affiliation(s)
- Satoshi Inagaki
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Wataru Otsu
- Department of Biomedical Research, Gifu Pharmaceutical University, Gifu, Japan
| | - Tomoaki Araki
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Yosuke Numata
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Shinsuke Nakamura
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideshi Tsusaki
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Hideaki Hara
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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25
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Morozumi W, Aoshima K, Inagaki S, Iwata Y, Nakamura S, Hara H, Shimazawa M. Piezo 1 is involved in intraocular pressure regulation. J Pharmacol Sci 2021; 147:211-221. [PMID: 34217619 DOI: 10.1016/j.jphs.2021.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/28/2021] [Accepted: 06/09/2021] [Indexed: 01/02/2023] Open
Abstract
Trabecular meshwork (TM) regulates the intraocular pressure (IOP) through the control of aqueous humor outflow. Previous reports show that TM cells express 11 types of mechanosensitive molecules, including Piezo 1, which sense mechanical stimuli. However, the role of Piezo 1 on TM remains unclear. Thus, in this study, we focused on the Piezo 1 and examined its role in TM cells. Immunostaining showed that Piezo 1 was expressed in mouse TM and human TM cells. Moreover, the eye drops containing Piezo 1 agonist Yoda 1 reduced the IOP in mice, and also reduced fibronectin expression level around the TM. In addition, Piezo 1 activation suppressed human TM cells migration/proliferation, and decreased fibronectin expression level. On the other hand, Piezo 1 activation increased matrix metalloproteinase (MMP)-2 expression responsible for fibronectin degradation. These findings could contribute to the development of new treatments for glaucoma.
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Affiliation(s)
- Wataru Morozumi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Kota Aoshima
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Iwata
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
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26
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Song S, Hyodo T, Ikeda H, Vu KAL, Tang Y, Chan ES, Otani Y, Inagaki S, Yamaguchi K, Ohwada T. Contribution of Solvents to Geometrical Preference in the Z/ E Equilibrium of N-Phenylthioacetamide. J Org Chem 2021; 87:1641-1660. [PMID: 34082529 DOI: 10.1021/acs.joc.1c00801] [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: 11/29/2022]
Abstract
We studied the Z/E preference of N-phenylthioacetamide (thioacetanilide) derivatives in various solvents by means of 1H NMR spectroscopy, as well as molecular dynamics (MD) and other computational analyses. Our experimental results indicate that the Z/E isomer preference of secondary (NH)thioamides of N-phenylthioacetamides shows substantial solvent dependency, whereas the corresponding amides do not show solvent dependency of the Z/E isomer ratios. Detailed study of the solvent effects based on molecular dynamics simulations revealed that there are two main modes of hydrogen (H)-bond formation between solvent and (NH)thioacetamide, which influence the Z/E isomer preference of (NH)thioamides. DFT calculations of NH-thioamide in the presence of one or two explicit solvent molecules in the continuum solvent model can effectively mimic the solvation by multiple solvent molecules surrounding the thioamide in MD simulations and shed light on the precise nature of the interactions between thioamide and solvent. Orbital interaction analysis showed that, counterintuitively, the Z/E preference of NH-thioacetamides is mainly determined by steric repulsion, while that of sterically congested N-methylthioacetamides is mainly determined by thioamide conjugation.
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Affiliation(s)
- Shuyi Song
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tadashi Hyodo
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Hirotaka Ikeda
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kim Anh L Vu
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, 119077.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599
| | - Yulan Tang
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Erika S Chan
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey 08854, United States
| | - Yuko Otani
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Satoshi Inagaki
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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27
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Ido T, Fujisawa A, Takemura K, Kobayashi TK, Nishimura D, Kasuya N, Fukuyama A, Moon C, Yamasaki K, Inagaki S, Nagashima Y, Yamada T. Conceptual design of heavy ion beam probes on the PLATO tokamak. Rev Sci Instrum 2021; 92:053553. [PMID: 34243249 DOI: 10.1063/5.0041814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 05/05/2021] [Indexed: 06/13/2023]
Abstract
Heavy ion beam probe (HIBP) systems have been designed for the new tokamak, PLATO [A. Fujisawa, AIP Conf. Proc. 1993, 020011 (2018)]. The designs have been completed, and the installations are in progress. Two HIBPs are being installed in toroidal sections 180° apart to investigate long-range correlations in the toroidal direction. Each HIBP consists of an injection beamline and a detection beamline as usual. Yet, one of the HIBPs is equipped with an additional detection beamline; the measurement positions of its two detection beamlines can be placed on almost the same magnetic surface yet at poloidal angles that differ by ∼180°. The use of three detection beamlines allows us to investigate spatial asymmetry and long-range correlations in both the toroidal and poloidal directions, simultaneously. The detected beam intensity is expected to be enough for turbulence measurements in almost the entire plasma region when the electron density is up to 1 × 1019 m-3 by selecting appropriate ion species for the probe beam. Each detector has three channels 10 mm apart, allowing measurement of local structures of micro-scale turbulence. Therefore, using the HIBPs on the PLATO tokamak will enable both local and global properties of plasma turbulence to be investigated, simultaneously.
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Affiliation(s)
- T Ido
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - A Fujisawa
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - K Takemura
- Department of Applied Energy, Nagoya University, Furocho, Chikusa, Nagoya 464-8603, Japan
| | - T-K Kobayashi
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - D Nishimura
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - N Kasuya
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - A Fukuyama
- Department of Nuclear Engineering, Kyoto University, Nisikyo-ku, Kyoto 615-8540, Japan
| | - C Moon
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - K Yamasaki
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - S Inagaki
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - Y Nagashima
- Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - T Yamada
- Faculty of Arts and Science, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
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28
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Tokuzawa T, Tanaka K, Tsujimura T, Kubo S, Emoto M, Inagaki S, Ida K, Yoshinuma M, Watanabe KY, Tsuchiya H, Ejiri A, Saito T, Yamamoto K. W-band millimeter-wave back-scattering system for high wavenumber turbulence measurements in LHD. Rev Sci Instrum 2021; 92:043536. [PMID: 34243406 DOI: 10.1063/5.0043474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 04/01/2021] [Indexed: 06/13/2023]
Abstract
A 90 GHz W-band millimeter-wave back-scattering system is designed and installed for measuring electron scale turbulence (k⊥ρs ∼ 40). A metal lens relay antenna is used for in-vessel beam focusing, and a beam diameter of less than 40 mm is achieved in the plasma core region. This antenna can be steered at an angle of 159° ± 6°, which almost covers the plasma radius. The estimated size of the scattering volume is ∼105 mm at the edge and 135 mm at the core, respectively. A 60 m corrugated waveguide is used to achieve a low transmission loss of ∼8 dB. A heterodyne detection system for millimeter-wave circuits with probing power modulation can distinguish the scattered signal from background noise.
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Affiliation(s)
- T Tokuzawa
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Tanaka
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - T Tsujimura
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - S Kubo
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - M Emoto
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - S Inagaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - K Ida
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - M Yoshinuma
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Y Watanabe
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - H Tsuchiya
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - A Ejiri
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - T Saito
- Research Center for Development of Far-Infrared Region, University of Fukui, Bunkyo 3-9-1, Fukui 910-8507, Japan
| | - K Yamamoto
- Research Center for Development of Far-Infrared Region, University of Fukui, Bunkyo 3-9-1, Fukui 910-8507, Japan
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29
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Abstract
We herein report the case of a 75-year-old man with asymptomatic immune checkpoint inhibitor (ICI)-associated myocarditis diagnosed on the basis of elevated levels of creatine kinase (CK), CK-myocardial band and troponin I (TNI). He was suspected of being complicated with myasthenia gravis (MG). High-dose prednisolone (PSL) is associated with a risk of MG exacerbation; therefore, PSL therapy was gradually increased from 5 mg/day to 20 mg/day, which resulted in the normalization of the TNI level, and no PSL-related side effects occurred. MG easily complicates myocarditis as an immune-related adverse event; thus, the treatment plan should be carefully considered.
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Affiliation(s)
- Junya Tanabe
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
| | - Nobuhide Watanabe
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
| | - Akihiro Endo
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
| | - Taichi Nagami
- Division of Urology, Shimane University Faculty of Medicine, Japan
| | - Satoshi Inagaki
- Division of Neurology, Shimane University Faculty of Medicine, Japan
| | - Kazuaki Tanabe
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
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30
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Inagaki S. Creation of Retinal Vein Occlusion Model in Cynomolgus Monkeys and Determination of its Pathological Features. Curr Neurovasc Res 2021. [DOI: 10.2174/18755739mta5intyn0] [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: 11/22/2022]
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31
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Liu C, Kubota H, Amada T, Toyao T, Maeno Z, Ogura M, Nakazawa N, Inagaki S, Kubota Y, Shimizu KI. Selective catalytic reduction of NO over Cu-AFX zeolites: mechanistic insights from in situ/ operando spectroscopic and DFT studies. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00282a] [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: 11/21/2022]
Abstract
In situ/operando spectroscopic experiments and DFT calculations unravel the redox mechanism of NH3-SCR over Cu-AFX zeolites.
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Affiliation(s)
- Chong Liu
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Hiroe Kubota
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Takehiro Amada
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Takashi Toyao
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
| | - Zen Maeno
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Masaru Ogura
- Elements Strategy Initiative for Catalysts and Batteries
- Kyoto University
- Kyoto 615-8520
- Japan
- Institute of Industrial Science
| | - Naoto Nakazawa
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
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32
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Inagaki S, Ishizuka R, Ikehara Y, Odagawa S, Asanuma K, Morimoto S, Kubota Y. Highly efficient titanosilicate catalyst Ti-MCM-68 prepared using a liquid-phase titanium source for the phenol oxidation. RSC Adv 2021; 11:3681-3684. [PMID: 35424308 PMCID: PMC8694131 DOI: 10.1039/d0ra10081a] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 12/29/2020] [Indexed: 11/29/2022] Open
Abstract
A highly efficient Ti-MCM-68 catalyst for phenol oxidation with H2O2 was prepared by a mild liquid-phase treatment for the first time. The key preparation procedures to excellent catalytic activity and high para-selectivity were the use of aqueous solutions of the Ti source and calcination at 650 °C prior to catalytic use. A highly efficient Ti-MCM-68 catalyst for phenol oxidation with H2O2 was prepared by a mild liquid-phase treatment for the first time.![]()
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Affiliation(s)
- Satoshi Inagaki
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Ryo Ishizuka
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Yuya Ikehara
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Shota Odagawa
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Kai Asanuma
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Shunsuke Morimoto
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
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Inagaki S, Shimazawa M, Hamaguchi K, Otsu W, Araki T, Sasaki Y, Numata Y, Tsusaki H, Hara H. Anti-vascular Endothelial Growth Factor Antibody Limits the Vascular Leakage and Decreases Subretinal Fibrosis in a Cynomolgus Monkey Choroidal Neovascularization Model. Curr Neurovasc Res 2020; 17:420-428. [PMID: 32445455 DOI: 10.2174/1567202617666200523163636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/18/2020] [Accepted: 04/27/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This study was conducted to evaluate the effects of anti-vascular endothelial growth factor (VEGF) antibody (bevacizumab) on vascular leakage and fibrosis in a monkey choroidal neovascularization (CNV) model. The relationship between fibrotic tissue and subretinal hyper-reflective material (SHRM), in optical coherence tomography (OCT) images, was also investigated. METHODS Experimental CNV was induced in male cynomolgus monkeys by laser photocoagulation. Intravitreal injection of bevacizumab at 0.5 mg/eye/dosing was initiated 2 weeks before or after laser irradiation and thereafter, conducted intermittently at 2- or 3-week intervals. Fluorescein fundus angiography (FA) and OCT imaging were conducted weekly from 2 to 7 weeks after laser irradiation. CNV leakage was evaluated by an established grading method using FA images. To assess the fibrosis and scarring, Masson's trichrome specimens of each CNV lesion were prepared, and morphometric analysis was conducted using an image analysis software. RESULTS The effects of bevacizumab on vascular leakage were shown using an established evaluation method. Morphometric analysis of Masson's trichrome-stained (MT) specimens revealed that collagen fiber synthesis was suppressed by bevacizumab pre-treatment (-29.2%) or post-treatment (-19.2%). SHRM was detected in OCT images in a monkey CNV model, and a significant correlation between the SHRM area in the OCT images and the collagen fiber area in the MT specimens was noted. CONCLUSION In the established cynomolgus monkey CNV model, bevacizumab prevented blood leakage but could not completely suppress fibrosis. SHRM in the OCT images reflected retinal fibrous tissue in a laser-induced CNV monkey model. This model might be useful for elucidating the pathology and development therapy for neovascularization or fibrosis.
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Affiliation(s)
- Satoshi Inagaki
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Koji Hamaguchi
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Wataru Otsu
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Tomoaki Araki
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Yuji Sasaki
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Yosuke Numata
- Shin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan
| | - Hideshi Tsusaki
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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34
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Inagaki S, Kawase K, Funato M, Seki J, Kawase C, Ohuchi K, Kameyama T, Ando S, Sato A, Morozumi W, Nakamura S, Shimazawa M, Iejima D, Iwata T, Yamamoto T, Kaneko H, Hara H. Effect of Timolol on Optineurin Aggregation in Transformed Induced Pluripotent Stem Cells Derived From Patient With Familial Glaucoma. ACTA ACUST UNITED AC 2020; 59:2293-2304. [DOI: 10.1167/iovs.17-22975] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuhide Kawase
- Department of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Tsubasa Kameyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Arisu Sato
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Wataru Morozumi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Daisuke Iejima
- Division of Molecular and Cellular Biology, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Takeshi Iwata
- Division of Molecular and Cellular Biology, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Tetsuya Yamamoto
- Department of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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35
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Iwata Y, Inagaki S, Morozumi W, Nakamura S, Hara H, Shimazawa M. Treatment with GDF15, a TGFβ superfamily protein, induces protective effect on retinal ganglion cells. Exp Eye Res 2020; 202:108338. [PMID: 33157126 DOI: 10.1016/j.exer.2020.108338] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 10/12/2020] [Accepted: 10/24/2020] [Indexed: 10/23/2022]
Abstract
Growth differentiation factor 15 (GDF15) is a protein belonging to the transforming growth factor beta (TGF-β) superfamily. The precursor GDF15 is cleaved and activated as a mature GDF15 by protease. GDF15 has been detected in the aqueous humor of the primary open angle glaucoma patients, however the localization and the effect on the retinal ganglion cells (RGCs) are still unknown. Thus, the purpose of this study was to elucidate the effect of GDF15 on mouse optic nerve crush (ONC) model and primary culture of rat RGCs. Immunostaining showed that the GDF15 was in the ganglion cell layer (GCL), and colocalized with GFAP-positive cells in the GCL and the optic nerve. Western blotting analysis showed that the mature GDF15 was upregulated in the retina and the optic nerve after the ONC. Intravitreal injection of GDF15 suppressed RGCs loss of the ONC model mice in vivo. The neurites length of the primary culture of rat RGCs were increased by mature GDF15 treatment. In addition, the neurotrophic effect of GDF15 was canceled by RET inhibitor treatment. These findings indicate that GDF15 has neuroprotective effect on RGCs via GFRAL-RET pathway. Therefore, GDF15 may be one of novel therapeutic targets in RGC degenerative diseases.
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Affiliation(s)
- Yuki Iwata
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Wataru Morozumi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
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36
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Morita Y, Endo A, Inagaki S, Tanabe K. Influenza-associated Fulminant Myocarditis Complicated by Guillain-Barré Syndrome. Intern Med 2020; 59:2517-2521. [PMID: 32581169 PMCID: PMC7662053 DOI: 10.2169/internalmedicine.4950-20] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We herein report the case of a 47-year-old woman who was admitted with weakness and numbness of the limbs and dyspnea after being infected with influenza virus A. She had a history of Guillain-Barré syndrome (GBS) 7 years prior to this presentation. On admission, she was in shock, and transthoracic echocardiography showed severely reduced left-ventricular function. She was diagnosed with fulminant myocarditis by an endomyocardial biopsy, which was complicated by GBS. Venoarterial extracorporeal membrane oxygenation was required to manage the cardiogenic shock. After her condition improved, immunoadsorption for GBS was performed, and the motor and sensory disorders gradually improved.
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Affiliation(s)
- Yusuke Morita
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
| | - Akihiro Endo
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
| | - Satoshi Inagaki
- Department of Neurology, Shimane University Faculty of Medicine, Japan
| | - Kazuaki Tanabe
- Division of Cardiology, Shimane University Faculty of Medicine, Japan
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37
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Inagaki S, Nakamura T, Hamasaki Y, Yamamoto-Hanada K, Fukuie T, Narita M, Shimosawa T, Murata T, Ohya Y. Prostaglandin D 2 metabolite is not a useful clinical indicator for assessing atopic dermatitis. Clin Exp Dermatol 2020; 46:130-134. [PMID: 32705704 DOI: 10.1111/ced.14393] [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] [Received: 04/19/2020] [Revised: 06/17/2020] [Accepted: 07/10/2020] [Indexed: 11/29/2022]
Abstract
Prostaglandin D2 (PGD2 ) plays an important role in atopic dermatitis (AD), and 11,15-dioxo-9α-hydroxy-2,3,4,5-tetranorprostan-1,20-dioicacid (PGDM) is a major metabolite of PGD2 . We investigated the relationship between urinary PGDM levels and severity of paediatric AD. In total, 31 patients with AD and 21 healthy controls (HCs) without AD were recruited, and urinary PGDM levels were measured. Of the 31 patients with AD, 14 were reassessed for urinary PGDM after topical steroid therapy. There was no difference in urinary PGDM levels between patients with AD and HCs. Although there was a significant positive correlation between the SCORing Atopic Dermatitis (SCORAD) index and the serum level of thymus and activation-regulated chemokine (TARC), the urinary PGDM levels did not correlate with either SCORAD or serum TARC. Moreover, both SCORAD and serum TARC were significantly improved by topical steroid therapy; however, urinary PGDM levels were not changed. In conclusion, the level of urinary PGD2 metabolites in children with AD is substantially the same as that in HCs even if the disease is severe.
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Affiliation(s)
- S Inagaki
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
| | - T Nakamura
- Department of Animal Radiology, Graduate School of Agriculture and Life Science, The University of Tokyo, Tokyo, Japan
| | - Y Hamasaki
- Department of Animal Radiology, Graduate School of Agriculture and Life Science, The University of Tokyo, Tokyo, Japan
| | - K Yamamoto-Hanada
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
| | - T Fukuie
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
| | - M Narita
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan.,Department of Allergy, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - T Shimosawa
- Department of Clinical Laboratory, International University of Health and Welfare, Chiba, Japan
| | - T Murata
- Department of Animal Radiology, Graduate School of Agriculture and Life Science, The University of Tokyo, Tokyo, Japan
| | - Y Ohya
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
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38
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Ishida K, Nakano Y, Ojino K, Shimazawa M, Otsuka T, Inagaki S, Kawase K, Hara H, Yamamoto T. Evaluation of Bleb Characteristics after Trabeculectomy and Glaucoma Implant Surgery in the Rabbit. Ophthalmic Res 2020; 64:68-76. [PMID: 32498067 DOI: 10.1159/000509135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/20/2020] [Indexed: 11/19/2022]
Abstract
The characteristics of the conjunctival bleb are some of the most important factors for the surgical success of glaucoma filtering surgery. To improve surgical outcome, we investigated bleb histology after 3 different glaucoma surgeries. Surgery was performed in 21 white rabbits. Rabbits were randomized to trabeculectomy or implantation with EX-PRESS or a silicone tube (each n = 7). Bleb survival, intraocular pressure (IOP), and vascularity were evaluated. At 6 weeks, eyes were enucleated for histological analysis. Postoperative IOP at 2 weeks was significantly lower in the trabeculectomy and the EX-PRESS group than in the silicone tube group (p = 0.037) but not thereafter. Postoperative bleb survival (p = 0.542) and vascularity (p = 0.988) were similar among the 3 groups. Histologically, a capsule showing mild fibroblast proliferation associated with intercellular collagen was present around the surgical site. The thickness of the bleb was similar among all experimental groups, but it was significantly greater than in controls (p < 0.05). The inflammatory area did not differ between the EX-PRESS and the silicone tube group but was significantly greater in the trabeculectomy group than in the tube group (p = 0.031). A correlation between the thickness of the bleb wall and inflammation was found (r = 0.56, p < 0.01). EX-PRESS and silicone tube implants appear to be relatively inert, with little difference in biocompatibility and bleb survival. Since some degree of inflammation was still observed histologically in the bleb, more noninvasive surgical methods and more biocompatible materials may be desirable.
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Affiliation(s)
- Kyoko Ishida
- Department of Ophthalmology, Toho University Ohashi Medical Center, Tokyo, Japan,
| | - Yukimichi Nakano
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuki Ojino
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Tomohiro Otsuka
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuhide Kawase
- Department of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Tetsuya Yamamoto
- Department of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan
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Yamasaki K, Fujisawa A, Nagashima Y, Moon C, Inagaki S, Yamada T. Tomography system for two-dimensional observation of fluctuation in magnetized plasma. Rev Sci Instrum 2020; 91:033502. [PMID: 32259999 DOI: 10.1063/1.5144480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 02/28/2020] [Indexed: 06/11/2023]
Abstract
A tomography system is developed for observing local fluctuations, pursuing higher spatial resolution, over the entire plasma of a linear cylindrical plasma. The system is equipped with totally 126 lines-of-sight that are distributed equally to six sets of light guide arrays placed around the plasma. The system has succeeded in measuring the two-dimensional structure of plasma emission and resolving coherent fluctuation structures, with spatial resolution comparable to the ion Larmor radius.
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Affiliation(s)
- K Yamasaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - A Fujisawa
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - Y Nagashima
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - C Moon
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - S Inagaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - T Yamada
- Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
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40
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Kubota H, Liu C, Toyao T, Maeno Z, Ogura M, Nakazawa N, Inagaki S, Kubota Y, Shimizu KI. Formation and Reactions of NH4NO3 during Transient and Steady-State NH3-SCR of NOx over H-AFX Zeolites: Spectroscopic and Theoretical Studies. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05151] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroe Kubota
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Chong Liu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Masaru Ogura
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Naoto Nakazawa
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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41
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Amano F, Akamoto C, Ishimaru M, Inagaki S, Yoshida H. Pressure-induced dehydrogenative coupling of methane to ethane by platinum-loaded gallium oxide photocatalyst. Chem Commun (Camb) 2020; 56:6348-6351. [DOI: 10.1039/d0cc01730b] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Pt/Ga2O3 induced photocatalytic dehydrogenative coupling of CH4 to yield C2H6 under high CH4 pressure.
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Affiliation(s)
- Fumiaki Amano
- Department of Chemical and Environmental Engineering
- The University of Kitakyushu
- Fukuoka 808-0135
- Japan
- Precursory Research for Embryonic Science and Technology (PRESTO)
| | - Chiho Akamoto
- Department of Chemical and Environmental Engineering
- The University of Kitakyushu
- Fukuoka 808-0135
- Japan
| | - Mizuki Ishimaru
- Department of Chemical and Environmental Engineering
- The University of Kitakyushu
- Fukuoka 808-0135
- Japan
| | - Satoshi Inagaki
- Precursory Research for Embryonic Science and Technology (PRESTO)
- Japan Science and Technology Agency (JST)
- Saitama 332-0012
- Japan
- Division of Materials Science and Chemical Engineering
| | - Hisao Yoshida
- Graduate School of Human and Environmental Studies
- Kyoto University
- Kyoto 606-8501
- Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB)
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42
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Morozumi W, Inagaki S, Iwata Y, Nakamura S, Hara H, Shimazawa M. Piezo channel plays a part in retinal ganglion cell damage. Exp Eye Res 2019; 191:107900. [PMID: 31874142 DOI: 10.1016/j.exer.2019.107900] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 09/18/2019] [Revised: 11/27/2019] [Accepted: 12/20/2019] [Indexed: 01/09/2023]
Abstract
Piezo channel is one of the mechanosensitive channels that senses pressure and shearing stress. Previous reports show that Piezo channel is expressed in many tissues such as skin and lung and they have many important roles. In addition, the mRNA of Piezo has been detected in astrocytes in the optic nerve head of mice. However, it is not yet clear where Piezo channel localize in eye and what kind of effects it have. Thus, the purpose of this study was to determine the expression sites of Piezo channel in mouse eyes and effect of Piezo channel on retinal ganglion cells. Immunostaining analysis showed that the Piezo 1/2 were expressed in the cornea, trabecular meshwork of the anterior ocular segment, lens epithelial cells, and on the retinal ganglion cell layer. The expression of retinal Piezo 2 was increased in retinal disorder model mouse caused by high IOP. Piezo 1 agonist Yoda 1 suppressed neurite outgrowth in retinal ganglion cells. On the other hand, Piezo antagonist GsMTx4 promoted neurite outgrowth in retinal ganglion cells. These findings indicate that Piezo channel may contribute to diseases relating the IOP such as glaucoma.
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Affiliation(s)
- Wataru Morozumi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Iwata
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
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43
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Hirano Y, Iba Y, Kuroda N, Kubota Y, Inagaki S. Catalytic Carbonization of Acenaphthene for the Preparation of Ordered Mesoporous Carbon CMK-1 toward Application as Electrochemical Double-layer Capacitor Electrode with Ionic Liquid Electrolyte. CHEM LETT 2019. [DOI: 10.1246/cl.190090] [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: 11/12/2022]
Affiliation(s)
- Yoko Hirano
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Yoshiki Iba
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Naoto Kuroda
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
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44
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Ando S, Funato M, Ohuchi K, Inagaki S, Sato A, Seki J, Kawase C, Saito T, Nishio H, Nakamura S, Shimazawa M, Kaneko H, Hara H. The Protective Effects of Levetiracetam on a Human iPSCs-Derived Spinal Muscular Atrophy Model. Neurochem Res 2019; 44:1773-1779. [PMID: 31102025 DOI: 10.1007/s11064-019-02814-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 11/15/2018] [Revised: 04/04/2019] [Accepted: 05/09/2019] [Indexed: 12/30/2022]
Abstract
Spinal muscular atrophy (SMA) is an inherited disease characterized by progressive motor neuron death and subsequent muscle weakness and is caused by deletion or mutation of survival motor neuron (SMN) 1 gene. Protecting spinal motor neuron is an effective clinical strategy for SMA. The purpose of this study was to investigate the potential effect of an anti-epileptic drug levetiracetam on SMA. In the present study, we used differentiated spinal motor neurons (MNs) from SMA patient-derived induced pluripotent stem cells (SMA-iPSCs) to investigate the effect of levetiracetam. Levetiracetam promoted neurite elongation in SMA-iPSCs-MNs. TUNEL-positive spinal motor neurons were significantly reduced by levetiracetam in SMA-iPSCs-MNs. In addition, the expression level of cleaved-caspase 3 was decreased by levetiracetam in SMA-iPSCs-MNs. Furthermore, levetiracetam improved impaired mitochondrial function in SMA-iPSCs-MNs. On the other hand, levetiracetam did not affect the expression level of SMN protein in SMA-iPSCs-MNs. These findings indicate that levetiracetam has a neuroprotective effect for SMA.
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Affiliation(s)
- Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Arisu Sato
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Toshio Saito
- Division of Child Neurology, Department of Neurology, National Hospital Organization, Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Hisahide Nishio
- Department of Occupational Therapy, Faculty of Rehabilitation, Kobe Gakuin University, Kobe, Hyogo, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan.
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45
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Han Q, Tanaka A, Matsumoto M, Endo A, Kubota Y, Inagaki S. Conversion of methane to C2 and C3 hydrocarbons over TiO2/ZSM-5 core–shell particles in an electric field. RSC Adv 2019; 9:34793-34803. [PMID: 35530691 PMCID: PMC9073859 DOI: 10.1039/c9ra06927e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 10/17/2019] [Indexed: 11/30/2022] Open
Abstract
Catalytic conversion of methane (CH4) to light olefins is motivated by increasing recoverable reserves of methane resources, abundantly available in natural gas, shale gas, and gas hydrates. The development of effective processes for conversion of CH4 to light olefins is still a great challenge. The interface of ZSM-5 zeolite and TiO2 nanoparticles is successfully constructed in their core–shell particles via mechanochemical treatment with high shear stress. The oxidative coupling of methane at a low temperature under application of an electric field may be induced by the O2 activation via electrons running through the surface of TiO2 located at the interface of TiO2 and zeolite particles. Moreover, C3H6 was also produced by the ethylene to propylene (ETP) reaction catalyzed by Brønsted acid sites in the ZSM-5 zeolite within core–shell particles. A TiO2/ZSM-5 composite catalyst efficiently works for the oxidative coupling of methane and the subsequent ethylene-to-propylene reactions in an electric field.![]()
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Affiliation(s)
- Qiao Han
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Atsuhiro Tanaka
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Masayuki Matsumoto
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Akira Endo
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
- PRESTO
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46
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Kameyama T, Ohuchi K, Funato M, Ando S, Inagaki S, Sato A, Seki J, Kawase C, Tsuruma K, Nishino I, Nakamura S, Shimazawa M, Saito T, Takeda S, Kaneko H, Hara H. Efficacy of Prednisolone in Generated Myotubes Derived From Fibroblasts of Duchenne Muscular Dystrophy Patients. Front Pharmacol 2018; 9:1402. [PMID: 30559667 PMCID: PMC6287205 DOI: 10.3389/fphar.2018.01402] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 11/15/2018] [Indexed: 12/27/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a recessive X-linked form of muscular dystrophy characterized by progressive muscle degeneration. This disease is caused by the mutation or deletion of the dystrophin gene. Currently, there are no effective treatments and glucocorticoid administration is a standard care for DMD. However, the mechanism underlying prednisolone effects, which leads to increased walking, as well as decreased muscle wastage, is poorly understood. Our purpose in this study is to investigate the mechanisms of the efficacy of prednisolone for this disease. We converted fibroblasts of normal human cell line and a DMD patient sample to myotubes by MyoD transduction using a retroviral vector. In myotubes from the MyoD-transduced fibroblasts of the DMD patient, the myotube area was decreased and its apoptosis was increased. Furthermore, we confirmed that prednisolone could rescue these pathologies. Prednisolone increased the expression of not utrophin but laminin by down-regulation of MMP-2 mRNA. These results suggest that the up-regulation of laminin may be one of the mechanisms of the efficacy of prednisolone for DMD.
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Affiliation(s)
- Tsubasa Kameyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Arisu Sato
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuhiro Tsuruma
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Ichizo Nishino
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Takashi Saito
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Shin'ichi Takeda
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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47
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Takeuchi H, Inagaki S, Morozumi W, Nakano Y, Inoue Y, Kuse Y, Mizoguchi T, Nakamura S, Funato M, Kaneko H, Hara H, Shimazawa M. VGF nerve growth factor inducible is involved in retinal ganglion cells death induced by optic nerve crush. Sci Rep 2018; 8:16443. [PMID: 30401804 PMCID: PMC6219571 DOI: 10.1038/s41598-018-34585-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 10/16/2018] [Indexed: 12/11/2022] Open
Abstract
VGF nerve growth factor inducible (VGF) is a polypeptide that is induced by neurotrophic factors and is involved in neurite growth and neuroprotection. The mRNA of the Vgf gene has been detected in the adult rat retina, however the roles played by VGF in the retina are still undetermined. Thus, the purpose of this study was to determine the effects of VGF on the retinal ganglion cells (RGCs) of mice in the optic nerve crush (ONC) model, rat-derived primary cultured RGCs and human induced pluripotent stem cells (iPSCs)-derived RGCs. The mRNA and protein of Vgf were upregulated after the ONC. Immunostaining showed that the VGF was located in glial cells including Müller glia and astrocytes but not in the retinal neurons and their axons. AQEE-30, a VGF peptide, suppressed the loss of RGCs induced by the ONC, and it increased survival rat-derived RGCs and promoted the outgrowth of neurites of rat and human iPSCs derived RGCs in vitro. These findings indicate that VGF plays important roles in neuronal degeneration and has protective effects against the ONC on RGCs. Thus, VGF should be considered as a treatment of RGCs degeneration.
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Affiliation(s)
- Hiroto Takeuchi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Wataru Morozumi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yukimichi Nakano
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Inoue
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yoshiki Kuse
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Takahiro Mizoguchi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan.
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48
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Tokuzawa T, Tsuchiya H, Tsujimura T, Emoto M, Nakanishi H, Inagaki S, Ida K, Yamada H, Ejiri A, Watanabe KY, Oguri K, Akiyama T, Tanaka K, Yamada I. Microwave frequency comb Doppler reflectometer applying fast digital data acquisition system in LHD. Rev Sci Instrum 2018; 89:10H118. [PMID: 30399698 DOI: 10.1063/1.5035118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
We succeeded in increasing the radial observation points of the microwave frequency comb Doppler reflectometer system from 8 to 20 (or especially up to 45) using the high sampling rate of 40 GS/s digital signal processing. For a new acquisition system, the estimation scheme of the Doppler shifted frequency is constructed and compared with the conventional technique. Also, the fine radial profile of perpendicular velocity is obtained, and it is found that the perpendicular velocity profile is consistent with the E × B drift velocity one.
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Affiliation(s)
- T Tokuzawa
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - H Tsuchiya
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - T Tsujimura
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - M Emoto
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - H Nakanishi
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - S Inagaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - K Ida
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - H Yamada
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - A Ejiri
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - K Y Watanabe
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Oguri
- Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - T Akiyama
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - K Tanaka
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
| | - I Yamada
- National Institutes of Natural Sciences, National Institute for Fusion Science, Toki 509-5292, Japan
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49
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Takahashi Y, Ikeda H, Kanase Y, Makino K, Tabata H, Oshitari T, Inagaki S, Otani Y, Natsugari H, Takahashi H, Ohwada T. Elucidation of the E-Amide Preference of N-Acyl Azoles. J Org Chem 2018; 82:11370-11382. [PMID: 28968504 DOI: 10.1021/acs.joc.7b01759] [Citation(s) in RCA: 9] [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: 11/28/2022]
Abstract
The conformational properties of N-acyl azoles (imidazole, pyrazole, and triazole) were examined. The N-2',4',6'-trichlorobenzoyl azoles were stable in methanol at room temperature, and no hydrolyzed products were observed over 7 days in the presence of 5% trifluoroacetic acid or 5% triethylamine in CDCl3. The high stability may be explained by the double-bond amide character caused by the steric hindrance due to the ortho-substituents in the benzoyl group. While specific E-amide preferences were observed in N-acyl pyrazoles/triazoles, the amides of the imidazoles gave a mixture of E and Z. One of the conceivable ideas to rationalize this conformational preference may be repulsive interaction between two sets of lone-pair electrons on the pyrazole 2-nitrogen (nN) and the carbonyl oxygen atoms (nO) in the Z-conformation of N-acyl pyrazoles/triazoles. However, analysis of orbital interactions suggested that in the case of the E-conformation of N-acyl pyrazoles, such electron repulsion is small because of distance. The interbond energy calculations suggested that the Z-conformer is involved in strong vicinal σ-σ repulsion along the amide linkage between the σN1N2 and σC1C2 orbitals in the anti-periplanar arrangement and between the σN1C5 and σC1C2 orbitals in the syn-periplanar arrangement, which lead to the overwhelming E-preference in N-acyl pyrazoles/triazoles. In the case of N-acyl imidazoles, similar vicinal σ-σ repulsions were counterbalanced, leading to a weak preference for the E-conformer over the Z-conformer. The chemically stable and E-preferring N-acyl azoles may be utilized as scaffolds in future drug design.
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Affiliation(s)
- Yuka Takahashi
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Hirotaka Ikeda
- Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuki Kanase
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Kosho Makino
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Hidetsugu Tabata
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Tetsuta Oshitari
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Satoshi Inagaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuko Otani
- Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hideaki Natsugari
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Hideyo Takahashi
- Faculty of Pharma Sciences, Teikyo University , 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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50
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Kobayashi T, Sasaki M, Ido T, Kamiya K, Miura Y, Nagashima Y, Ida K, Inagaki S, Fujisawa A, Itoh SI, Itoh K. Quantification of Turbulent Driving Forces for the Geodesic Acoustic Mode in the JFT-2M Tokamak. Phys Rev Lett 2018; 120:045002. [PMID: 29437414 DOI: 10.1103/physrevlett.120.045002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/29/2017] [Indexed: 06/08/2023]
Abstract
We investigate spatial structures of turbulence and turbulent transport modulated by the geodesic acoustic mode (GAM), from which the excitation mechanism of the GAM is discussed. The GAM is found to be predominantly excited through a localized Reynolds stress force, rather than the dynamic shearing force. The evaluated growth rate is larger than the linear damping coefficients and is on the same order of magnitude as the effective growth rate evaluated from time evolution in the GAM kinetic energy.
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Affiliation(s)
- T Kobayashi
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - M Sasaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
| | - T Ido
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
| | - K Kamiya
- National Institutes for Quantum and Radiological Science and Technology, Naka 311-0193, Japan
| | - Y Miura
- Japan Atomic Energy Agency, Naka 311-0193, Japan
| | - Y Nagashima
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
| | - K Ida
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
| | - S Inagaki
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
| | - A Fujisawa
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
| | - S-I Itoh
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
| | - K Itoh
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
- Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
- Institute of Science and Technology Research, Chubu University, Kasugai 487-8501, Japan
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