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Zangi P, Ikematsu K, Meyer P, Takano H, Wu Y, Gutekunst J, Börner M, Last A, Korvink JG, Momose A. Parabolic gratings enhance the X-ray sensitivity of Talbot interferograms. Sci Rep 2023; 13:9624. [PMID: 37369747 DOI: 10.1038/s41598-023-36414-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
In grating-based X-ray Talbot interferometry, the wave nature of X-ray radiation is exploited to generate phase contrast images of objects that do not generate sufficient contrast in conventional X-ray imaging relying on X-ray absorption. The phase sensitivity of this interferometric technique is proportional to the interferometer length and inversely proportional to the period of gratings. However, the limited spatial coherency of X-rays limits the maximum interferometer length, and the ability to obtain smaller-period gratings is limited by the manufacturing process. Here, we propose a new optical configuration that employs a combination of a converging parabolic micro-lens array and a diverging micro-lens array, instead of a binary phase grating. Without changing the grating period or the interferometer length, the phase signal is enhanced because the beam deflection by a sample is amplified through the array of converging-diverging micro-lens pairs. We demonstrate that the differential phase signal detected by our proposed set-up is twice that of a Talbot interferometer, using the same binary absorption grating, and with the same overall inter-grating distance.
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Affiliation(s)
- Pouria Zangi
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Katsumasa Ikematsu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Pascal Meyer
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Hidekazu Takano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Yanlin Wu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Josephine Gutekunst
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Martin Börner
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
| | - Arndt Last
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Jan G Korvink
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Atsushi Momose
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
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2
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Fujiwara K, Nishio S, Yamamoto K, Fujiwara H, Itagaki H, Nagai T, Takano H, Yamaguchi S, Kudoh A, Suzuki Y, Nakamoto T, Kamio M, Kato K, Nakamura K, Takehara K, Yahata H, Kobayashi H, Saito M, Ushijima K, Hasegawa K. LBA31 Randomized phase III trial of maintenance chemotherapy with tegafur-uracil versus observation following concurrent chemoradiotherapy for locally advanced cervical cancer, GOTIC-002 LUFT trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.08.027] [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: 11/30/2022] Open
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3
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Sakai S, Kamada Y, Takano H, Ichikawa M, Kurimoto M, Katsuyama HK, Nishihira J, Sasaki M. Continuous partially hydrolyzed guar gum intake reduces cold-like symptoms: a randomized, placebo-controlled, double-blinded trial in healthy adults. Eur Rev Med Pharmacol Sci 2022; 26:5154-5163. [PMID: 35916813 DOI: 10.26355/eurrev_202207_29304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Partially hydrolyzed guar gum (PHGG), a water-soluble dietary fiber produced by the controlled partial enzymatic hydrolysis of guar gum beans, has various physiological roles. PHGG is expected to influence the immune function and prevent infections. The objective of this study was to examine the effect of continuous ingestion of PHGG for 12 weeks on the development of cold-like symptoms. PATIENTS AND METHODS A placebo-controlled, double blind, randomized, parallel-group comparative study was conducted. 96 healthy Japanese adults received 5.2 g PHGG or placebo daily for 12 weeks. Cold-like symptoms were assessed based on patient diary, and the levels of short-chain fatty acids (SCFAs) in stool and blood immune markers at baseline and at weeks 6 and 12. RESULTS The cumulative number of "no symptoms" days for all symptoms was significantly larger in the PHGG than in the placebo group. The result of the analysis by severity of cold-like symptoms also showed significant differences, with the PHGG group having a lower severity of cold-like symptoms. Propionic acid at weeks 6 and 12 and n-butyric acid and total SCFAs at week 12 were significantly higher in the PHGG than in the placebo group. The Interferon-γ level was significantly lower at week 6 in the PHGG than in the placebo group. CONCLUSIONS PHGG intake may affect immune function and suppress cold-like symptoms through the production of SCFAs in healthy adults.
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Affiliation(s)
- S Sakai
- Nestlé Health Science Company, Nestlé Japan Ltd, Shinagawa, Tokyo, Japan.
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4
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Kohmura Y, Yang SM, Chen HH, Takano H, Chang CJ, Wang YS, Lee TT, Chiu CY, Yang KE, Chien YT, Hu HM, Su TL, Petibois C, Chen YY, Hsu CH, Chen P, Hueng DY, Chen SJ, Yang CL, Chin AL, Low CM, Tan FCK, Teo A, Tok ES, Cai XX, Lin HM, Boeckl J, Stampfl AP, Yamada J, Matsuyama S, Ishikawa T, Margaritondo G, Chiang AS, Hwu Y. The new X-ray/visible microscopy MAXWELL technique for fast three-dimensional nanoimaging with isotropic resolution. Sci Rep 2022; 12:9668. [PMID: 35690597 PMCID: PMC9188605 DOI: 10.1038/s41598-022-13377-w] [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: 10/12/2021] [Accepted: 05/05/2022] [Indexed: 11/09/2022] Open
Abstract
Microscopy by Achromatic X-rays With Emission of Laminar Light (MAXWELL) is a new X-ray/visible technique with attractive characteristics including isotropic resolution in all directions, large-volume imaging and high throughput. An ultrathin, laminar X-ray beam produced by a Wolter type I mirror irradiates the sample stimulating the emission of visible light by scintillating nanoparticles, captured by an optical system. Three-dimensional (3D) images are obtained by scanning the specimen with respect to the laminar beam. We implemented and tested the technique with a high-brightness undulator at SPring-8, demonstrating its validity for a variety of specimens. This work was performed under the Synchrotrons for Neuroscience-an Asia-Pacific Strategic Enterprise (SYNAPSE) collaboration.
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Affiliation(s)
| | - Shun-Min Yang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Hsiang-Hsin Chen
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | | | - Chia-Ju Chang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Ya-Sian Wang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Tsung-Tse Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Ching-Yu Chiu
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Kai-En Yang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Yu-Ting Chien
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Huan-Ming Hu
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Tzu-Ling Su
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Cyril Petibois
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Yi-Yun Chen
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Cheng-Huan Hsu
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Peilin Chen
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan.,Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Dueng-Yuan Hueng
- Department of Surgery, School of Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Shean-Jen Chen
- College of Photonics, National Yang Ming Chiao Tung University, Tainan, Taiwan
| | - Chi Lin Yang
- Brain Research Center, National Tsing Hua University, Hsinchu, Taiwan
| | - An-Lun Chin
- Brain Research Center, National Tsing Hua University, Hsinchu, Taiwan
| | - Chian-Ming Low
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Anaesthesia, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Francis Chee Kuan Tan
- Department of Anaesthesia, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Alvin Teo
- School of Chemical and Life Sciences, Nanyang Polytechnic, Singapore, Singapore
| | - Eng Soon Tok
- ƐMaGIC-Lab, Department of Physics, National University of Singapore, Singapore, Singapore
| | - Xu Xiang Cai
- Mechanical and Materials Department, Tatung University, Taipei, Taiwan
| | - Hong-Ming Lin
- Mechanical and Materials Department, Tatung University, Taipei, Taiwan
| | - John Boeckl
- US Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, Fairborn, OH, 43455, USA
| | - Anton P Stampfl
- Australian Nuclear Science and Technology Organisation, Sydney, NSW, 2234, Australia
| | | | - Satoshi Matsuyama
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| | | | | | - Ann-Shyn Chiang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan.,Brain Research Center, National Tsing Hua University, Hsinchu, Taiwan
| | - Yeukuang Hwu
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan. .,Brain Research Center, National Tsing Hua University, Hsinchu, Taiwan.
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5
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Hinoshita F, Katagiri D, Takano H, Ogawa T, Fukaya T, Katsuki T, Takano D, Ejiri S, Nakaya N, Nakahara T, Shinoda T. POS-980 INTERNATIONAL CONTRIBUTION OF JAPAN TO DEVELOP HIGH-LEVEL HEMODIALYSIS IN MALAYSIA. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.1021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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6
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Matsuo K, Tamura R, Hotta K, Okada M, Takeuchi A, Wu Y, Hashimoto K, Takano H, Momose A, Nishino A. Bilaterally Asymmetric Helical Myofibrils in Ascidian Tadpole Larvae. Front Cell Dev Biol 2021; 9:800455. [PMID: 34950666 PMCID: PMC8688927 DOI: 10.3389/fcell.2021.800455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 11/18/2021] [Indexed: 11/13/2022] Open
Abstract
The locomotor system is highly bilateral at the macroscopic level. Homochirality of biological molecules is fully compatible with the bilateral body. However, whether and how single-handed cells contribute to the bilateral locomotor system is obscure. Here, exploiting the small number of cells in the swimming tadpole larva of the ascidian Ciona, we analyzed morphology of the tail at cellular and subcellular scales. Quantitative phase-contrast X-ray tomographic microscopy revealed a high-density midline structure ventral to the notochord in the tail. Muscle cell nuclei on each side of the notochord were roughly bilaterally aligned. However, fluorescence microscopy detected left-right asymmetry of myofibril inclination relative to the longitudinal axis of the tail. Zernike phase-contrast X-ray tomographic microscopy revealed the presence of left-handed helices of myofibrils in muscle cells on both sides. Therefore, the locomotor system of ascidian larvae harbors symmetry-breaking left-handed helical cells, while maintaining bilaterally symmetrical cell alignment. These results suggest that bilateral animals can override cellular homochirality to generate the bilateral locomotor systems at the supracellular scale.
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Affiliation(s)
- Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | - Ryota Tamura
- Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan
| | - Kohji Hotta
- Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University, Yokohama, Japan
| | - Mayu Okada
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | - Akihisa Takeuchi
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Japan
| | - Yanlin Wu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Koh Hashimoto
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Hidekazu Takano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Atsushi Momose
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Atsuo Nishino
- Department of Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
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7
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Tanaka H, Ono T, Takano H, Manabe Y, Kajima M, Fujimoto K, Yuasa Y, Shiinoki T, Yamaji Y, Matsunaga K, Matsuo M. Monocyte-to-Lymphocyte Ratio is a Significant Prognostic Factor for Patients With Non-Small Cell Lung Cancer Who Treated By Stereotactic Body Radiation Therapy: A Multi Institutional Study. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Ishihara K, Kubota Y, Matsuda J, Imori Y, Tokita Y, Takano H, Shimizu W. Predictive scoring method for declining left ventricular ejection fraction in hypertrophic cardiomyopathy. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The transition to the dilated phase, as well as sudden cardiac death, is one of the most undesirable scenarios for patients with hypertrophic cardiomyopathy (HCM). Although the dilated phase of HCM (DHCM) is defined as left ventricular ejection fraction (LVEF) <50%, the significance of mildly reduced LVEF is also in the spotlight because this status is considered as a transitional phase of DHCM. Establishing predictive scoring method for declining LVEF is expected.
Methods
Of the 319 HCM patients enrolled in the J-HCM registry from our hospital, we analyzed 168 patients (101 male and 57 female, 63.4±14.8 years), after excluding those who underwent PTSMA, who received pacemaker implantation, and who died or dropped out within 2 years. The patients were divided into two groups according to the change of LVEF from the baseline. During the follow-up period (62.0±109.9 months), LVEF decreased by ≥10% in 37 patients (Group D) whereas it did not in 131 patients (Group C). We compared clinical parameters between the two groups to identify the factors affecting the declining LVEF by ≥10% and examined whether the scoring method using those parameters can predict it.
Results
At the baseline, the percentage of male and diabetic patients was greater in group D than group C (76% vs. 55%, P=0.023 and 38% vs. 12%, P<0.001, respectively). The patients with complete right bundle branch block, wide QRS complex (>100msec), and atrial fibrillation tended to be more in group D than group C (all P<0.1). When the scoring method with those 5 parameters was tested by giving 1 point each, the risk of the declining LVEF was tended to be higher in the patients with 2 or 3 point and significantly higher in those with 4 point compared with that in those with point 0 (OR 2.042, 95% CI 0.983–4.243, P=0.056 and OR 12.000, 95% CI 2.313–62.267, P=0.003, respectively).
Conclusions
This scoring method appeared to be useful to stratify the risk of the decrease in LVEF in patients with HCM. The validation study is warranted in a larger population.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Ishihara
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
| | - Y Kubota
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
| | - J Matsuda
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
| | - Y Imori
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
| | - Y Tokita
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
| | - H Takano
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
| | - W Shimizu
- Nippon Medical School Hospital, department of cardiology, Tokyo, Japan
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9
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Kuroda Y, Kawaai K, Hatano N, Wu Y, Takano H, Momose A, Ishimoto T, Nakano T, Roschger P, Blouin S, Matsuo K. Hypermineralization of Hearing-Related Bones by a Specific Osteoblast Subtype. J Bone Miner Res 2021; 36:1535-1547. [PMID: 33905562 PMCID: PMC8453739 DOI: 10.1002/jbmr.4320] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 12/16/2022]
Abstract
Auditory ossicles in the middle ear and bony labyrinth of the inner ear are highly mineralized in adult mammals. Cellular mechanisms underlying formation of dense bone during development are unknown. Here, we found that osteoblast-like cells synthesizing highly mineralized hearing-related bones produce both type I and type II collagens as the bone matrix, while conventional osteoblasts and chondrocytes primarily produce type I and type II collagens, respectively. Furthermore, these osteoblast-like cells were not labeled in a "conventional osteoblast"-specific green fluorescent protein (GFP) mouse line. Type II collagen-producing osteoblast-like cells were not chondrocytes as they express osteocalcin, localize along alizarin-labeled osteoid, and form osteocyte lacunae and canaliculi, as do conventional osteoblasts. Auditory ossicles and the bony labyrinth exhibit not only higher bone matrix mineralization but also a higher degree of apatite orientation than do long bones. Therefore, we conclude that these type II collagen-producing hypermineralizing osteoblasts (termed here auditory osteoblasts) represent a new osteoblast subtype. © 2021 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Yukiko Kuroda
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | - Katsuhiro Kawaai
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | - Naoya Hatano
- Applied Cell Biology, Graduate School of Interdisciplinary Science & Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Yanlin Wu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Hidekazu Takano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Atsushi Momose
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Takuya Ishimoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Takayoshi Nakano
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Paul Roschger
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of OEGK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria
| | - Stéphane Blouin
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of OEGK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
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10
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Mamyrbayev T, Ikematsu K, Takano H, Wu Y, Kimura K, Doll P, Last A, Momose A, Meyer P. Staircase array of inclined refractive multi-lenses for large field of view pixel super-resolution scanning transmission hard X-ray microscopy. J Synchrotron Radiat 2021; 28:732-740. [PMID: 33949982 PMCID: PMC8127365 DOI: 10.1107/s1600577521001521] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Owing to the development of X-ray focusing optics during the past decades, synchrotron-based X-ray microscopy techniques allow the study of specimens with unprecedented spatial resolution, down to 10 nm, using soft and medium X-ray photon energies, though at the expense of the field of view (FOV). One of the approaches to increase the FOV to square millimetres is raster-scanning of the specimen using a single nanoprobe; however, this results in a long data acquisition time. This work employs an array of inclined biconcave parabolic refractive multi-lenses (RMLs), fabricated by deep X-ray lithography and electroplating to generate a large number of long X-ray foci. Since the FOV is limited by the pattern height if a single RML is used by impinging X-rays parallel to the substrate, many RMLs at regular intervals in the orthogonal direction were fabricated by tilted exposure. By inclining the substrate correspondingly to the tilted exposure, 378000 X-ray line foci were generated with a length in the centimetre range and constant intervals in the sub-micrometre range. The capability of this new X-ray focusing device was first confirmed using ray-tracing simulations and then using synchrotron radiation at BL20B2 of SPring-8, Japan. Taking account of the fact that the refractive lens is effective for focusing high-energy X-rays, the experiment was performed with 35 keV X-rays. Next, by scanning a specimen through the line foci, this device was used to perform large FOV pixel super-resolution scanning transmission hard X-ray microscopy (PSR-STHXM) with a 780 ± 40 nm spatial resolution within an FOV of 1.64 cm × 1.64 cm (limited by the detector area) and a total scanning time of 4 min. Biomedical implant abutments fabricated via selective laser melting using Ti-6Al-4V medical alloy were measured by PSR-STHXM, suggesting its unique potential for studying extended and thick specimens. Although the super-resolution function was realized in one dimension in this study, it can be expanded to two dimensions by aligning a pair of presented devices orthogonally.
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Affiliation(s)
- Talgat Mamyrbayev
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Baden-Württemberg, Germany
| | - Katsumasa Ikematsu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Hidekazu Takano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Yanlin Wu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Kenji Kimura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Patrick Doll
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Baden-Württemberg, Germany
| | - Arndt Last
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Baden-Württemberg, Germany
| | - Atsushi Momose
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Pascal Meyer
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Baden-Württemberg, Germany
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11
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Wu Y, Takano H, Momose A. Time-resolved x-ray stroboscopic phase tomography using Talbot interferometer for dynamic deformation measurements. Rev Sci Instrum 2021; 92:043702. [PMID: 34243370 DOI: 10.1063/5.0030811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 03/14/2021] [Indexed: 06/13/2023]
Abstract
Time-resolved x-ray phase tomography using a Talbot interferometer and white synchrotron radiation can provide a three-dimensional movie for visualizing the structural change of materials consisting of light elements. In this study, time-resolved x-ray stroboscopic phase tomography using a Talbot interferometer is demonstrated for a vibrating object under 24 Hz compression-stretch fatigue loading. Moiré patterns are recorded by synchronizing drivers for a shutter, grating displacement, and sample rotation with an x-ray camera with a 200 µs exposure, and phase tomograms are reconstructed at specific motion phases of the vibration. The measurement lasts for a few minutes and the δ value changes before breaking, which is considered due to plastic deformation of soft materials under external vibration are depicted three-dimensionally.
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Affiliation(s)
- Yanlin Wu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Hidekazu Takano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Atsushi Momose
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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12
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Tanaka H, Ohno N, Kajita S, Takano H, Hattori S, Imaeda Y. Evaluation of axial decay length of plasma pressure in detached plasma. Nuclear Materials and Energy 2020. [DOI: 10.1016/j.nme.2020.100812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Hoshika Y, Kubota Y, Mozawa K, Yodogawa K, Iwasaki Y, Yamamoto T, Takano H, Tsukada Y, Asai K, Miyauchi Y, Kodani E, Maruyama M, Tanabe J, Shimizu W. Effect of empagliflozin versus placebo on body composition in patients with acute myocardial infarction and type 2 diabetes mellitus: subgroup analysis of the EMBODY trial. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Prevention of heart failure is one of the most important challenges after acute myocardial infarction (AMI). The development of heart failure is closely associated with fluid balance which can be evaluated by the measurement of body composition such as total body water (TBW), extracellular water (ECW), and intracellular water (ICW). This subgroup analysis of the EMBODY trial was designed to determine whether the Sodium–glucose cotransporter 2 (SGLT2) inhibitor affect fluid balance and improve heart failure in patients after AMI.
Methods
The EMBODY trial was a prospective, multicenter, randomized, double-blind, placebo-controlled trial in patients with AMI and type 2 diabetes in Japan. A total of 105 patients were randomized (1:1) to receive once-daily 10 mg empagliflozin, an SGLT2 inhibitor or placebo 2 weeks after the onset of AMI. In this subanalysis, we investigated the time-course of body composition measured by a bioelectrical impedance analyzer “InBody®”. The primary endpoints were changes in every particular parameter of body composition at week 0, 4, 12, and 24. Secondary endpoints were changes in blood pressure (BP), body weight and N-terminal pro b-type natriuretic peptide (NT-proBNP).
Results
Overall, 55 patients were included in the full analysis set (67.2±10.0 years, male 78.2%, and n=30 in empagliflozin group and 25 in placebo group). Baseline characteristics were not significantly different between the two groups. The change between at baseline and 24 weeks in TBW was −0.44 L (P=0.19) in the empagliflozin group and +1.14 L (P=0.0002) in the placebo group, adjusted difference −1.58 L, 95% confidence interval (CI) −2.46 to −0.70 L (P=0.0006). The empagliflozin group showed significant decreases in the body weight, ECW, ICW and systolic BP compared with the placebo group (−2.2 kg vs, +0.01 kg, P=0.004, −0.21 L vs, +0.40 L, P=0.001, −0.23 L vs, +0.74 L, P=0.0007, and −11.0 mmHg vs, +5.0 mmHg, P<0.0001, respectively). On the other hand, NT-Pro BNP levels significantly decreased in the empagliflozin group and placebo group (1028.7 pg/mL to 370.3 pg/ml, p=0.0001 and 1270.6 pg/mL to 673.7 pg/ml, p=0.006, respectively). In the multiple regression analysis of the change in TBW and ICW for the empagliflozin group, systolic BP was identified as a significant factor (P=0.001, and 0.003, respectively). In stratified analysis of BMI 25 kg/m2 or more, the empagliflozin group showed significant decreases in body weight, TBW, ECW and ICW compared with the placebo group, but not below BMI 25 kg/m2 group.
Conclusion
Empagliflozin reduced not only body weight, but also TBW, ECW and ICW. Interestingly, this tendency was remarkable at BMI 25 or more. This study suggested that early SGLT2 inhibitor administration in obesity patients with AMI and DM might be effective to reduce body weight and TBW.
Funding Acknowledgement
Type of funding source: Private grant(s) and/or Sponsorship. Main funding source(s): Boehringer Ingelheim
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Affiliation(s)
- Y Hoshika
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - Y Kubota
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - K Mozawa
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - K Yodogawa
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - Y Iwasaki
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - T Yamamoto
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - H Takano
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - Y Tsukada
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - K Asai
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - Y Miyauchi
- Nippon Medical School of Chiba, Chiba, Japan
| | - E Kodani
- Nippon Medical School Teaching Hospital, Tama Nagayama Hospital, Tokyo, Japan
| | - M Maruyama
- Nippon Medical School Musashi-Kosugi Hospital, Kanagawa, Japan
| | - J Tanabe
- Shizuoka Medical Center, Shizuoka, Japan
| | - W Shimizu
- Nippon Medical School Teaching Hospital, Tokyo, Japan
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14
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Tanaka H, Ono T, Takano H, Manabe Y, Kajima M, Shiinoki T, Yamaji Y, Matsunaga K. Anemia is a Significant Prognostic Factor in Overall Survival of Patients with Non-Small Cell Lung Cancer Treated with Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Kubo T, Takano H, Takayama M, Doi Y, Minami Y, Ebato M, Inomata T, Katoh T, Okamoto R, Chikamori T, Watanabe E, Furugen A, Maekwa Y, Shimizu W, Kitaoka H. Baseline clinical features in a large-scale registration survey of patient with hypertrophic cardiomyopathy throughout Japan: J-HCM registry study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Hypertrophic cardiomyopathy (HCM) is a most prevalent primary myocardial disorder with heterogeneous clinical features. However, there have been few studies on clinical features of HCM as a prospective cohort. In 2015, we established a large-scale registration survey of patients with HCM throughout Japan, named J-HCM registry study.
Purpose
The aim of this study was to clarify the clinical features of Japanese patients with HCM.
Methods
J-HCM registry study is a prospective, multicenter investigation, consisting of 24 hospitals. This time, we present the baseline clinical characteristics in this survey.
Results
Total 1484 patients were registered. The ages at registration and at diagnosis were 65±15 and 56±17 years, respectively, and 806 patients (54%) were men. Majority of the patients (95%) was NYHA class I or II. With regard to subtypes of HCM, there were 526 patients (36%) in the HCM with left ventricular (LV) outflow tract obstruction, 126 patients (8%) in the mid-ventricular obstruction, 57 patients (4%) in the end-stage phase characterized by LV ejection fraction <50%, and 197 patients (14%) in apical HCM. At registration, 80 patients (6%) had prior successful recovery from sustained ventricular tachycardia or ventricular fibrillation, 162 patients (11%) suffered from heart failure hospitalization, and 64 patients (4%) had history of embolic event. Regarding invasive treatment, 160 patients (10%) had prior septal reduction therapy and 162 patients (11%) had ICD implantation. According to the 2014 European Society of Cardiology Guidelines on sudden cardiac death (SCD) prevention, the study patients were divided into 3 categories by the HCM Risk-SCD calculator: patients distribution, 4% in the high risk group (≥6% calculated HCM Risk-SCD at 5 years), 7% in the intermediate risk group (4% to <6%), 69% in the low risk group (<4%), and 16% in the patients with extreme characteristics (Figure 1).
Conclusions
In this multicenter registration survey of patients with HCM, the baseline clinical characteristics were almost similar to several retrospective large-scale cohorts in Western countries except older age and less symptomatic state. This study will provide important knowledge regarding management of HCM.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Kubo
- Kochi Medical School, Kochi, Japan
| | - H Takano
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - M Takayama
- Sakakibara Heart Institute, Fucyu Tokyo, Japan
| | - Y.L Doi
- Kochi Medical School, Kochi, Japan
| | - Y Minami
- Tokyo Women's Medical University, Tokyo, Japan
| | - M Ebato
- Showa University Fujigaoka Hospital, Yokohama, Japan
| | - T Inomata
- Kitasato University School of Medicine, Sagamihara, Japan
| | - T Katoh
- Kyoto University, Kyoto, Japan
| | - R Okamoto
- Mie University Graduate School of Medicine, Tsu, Japan
| | - T Chikamori
- Tokyo Medical University Hospital, Tokyo, Japan
| | - E Watanabe
- Fujita Health University School of Medicine, Toyoake, Japan
| | - A Furugen
- Sapporo Cardio Vascular Clinic, Sapporo, Japan
| | - Y Maekwa
- Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - W Shimizu
- Nippon Medical School Teaching Hospital, Tokyo, Japan
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16
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Hashimoto K, Takano H, Momose A. Improved reconstruction method for phase stepping data with stepping errors and dose fluctuations. Opt Express 2020; 28:16363-16384. [PMID: 32549461 DOI: 10.1364/oe.385236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/11/2020] [Indexed: 06/11/2023]
Abstract
In conventional grating-based X-ray interferometry, it is necessary to repeatedly translate one of the gratings with high accuracy in regular submicron steps and to ensure a constant dose delivery during each step. However, stepping errors and dose fluctuations inevitably occur due to mechanical inaccuracies and/or thermal drift of the interferometer during the stepping process. As a result of these stepping errors and dose fluctuations, the standard reconstruction procedure without considering them causes artifacts in the images as stripes of specific frequencies. In this report, we propose an improved reconstruction method to process phase stepping data with stepping errors and dose fluctuations. The approach can be used to estimate the stepping errors and dose fluctuations, and reconstruct virtually artifact-free images. Based on numerical simulations and experimental data including stepping errors and dose fluctuations, we demonstrate that the proposed method is more effective to other previously reported approaches.
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17
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Mizuno T, Mizuno M, Harada K, Takano H, Shinoda A, Takahashi A, Mamada K, Takamura K, Chen A, Iwanaga K, Ono S, Uechi M. Surgical correction for sinus venosus atrial septal defect with partial anomalous pulmonary venous connection in a dog. J Vet Cardiol 2020; 28:23-30. [DOI: 10.1016/j.jvc.2020.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 01/30/2020] [Accepted: 01/30/2020] [Indexed: 11/27/2022]
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18
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Arimoto T, Takahiro K, Toita T, Kobayashi H, Machida R, Mizutani T, Onda T, Mizuno M, Yokota H, Kamiura S, Takehara K, Takano H, Saito T, Mandai M, Satoh T, Yamaguchi S, Nakamura T, Ushijima K, Aoki D, Yaegashi N. Spread of tumour and adverse events after modified radical hysterectomy for FIGO Stage IB1 cervical cancer patients with tumour diameter preoperatively estimated 2 cm or less: Japan Clinical Oncology Group trial (JCOG1101); exploratory analysis before primary analysis. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz250.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Matsuda J, Takano H, Sekine T, Sangen H, Kubota Y, Imori Y, Nakata J, Saiki Y, Miyachi H, Tara S, Hosokawa Y, Tokita Y, Yamamoto T, Kumita S, Shimizu W. P889Clinical significance of four-dimensional flow magnetic resonance imaging measurement of turbulent kinetic energy for hypertrophic obstructive cardiomyopathy. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Four-dimensional flow magnetic resonance imaging (4D flow MRI) provides the detailed visualization of complex blood flow patterns and the evaluation of energy loss. Turbulent kinetic energy estimation (TKE) is reported to have good correlation with irreversible pressure loss in patients having aortic stenosis or great vessel disease. However, little is known about the usefulness of 4D flow MRI and the significance of TKE value in hypertrophic cardiomyopathy (HCM).
Purpose
The aims of this study were to investigate the relationship between TKE value and echocardiographic findings, clinical symptoms and evaluate the usefulness of 4D flow MRI to distinguish hypertrophic obstructive cardiomyopathy (HOCM) from non-obstructive HCM (HNCM).
Methods
From April 2018 to January 2019, 18 hypertrophic obstructive cardiomyopathy (HOCM) and 14 non-obstructive HCM (HNCM) patients underwent 4D flow MRI. We investigated TKE value calculated by 4D flow MRI, echocardiographic findings; left ventricular pressure gradient (LVPG), mitral regurgitation (MR) and clinical symptom.
Results
HOCM was defined by the 30 mmHg or greater of LVPG (HOCM: 87.7±47.3 mmHg, HNCM; 5.8±7.8 mmHg, p<0.001). TKE value in HOCM patients was significantly higher than HNCM (14.2±4.7 mJ vs. 9.0±4.6 mJ, p<0.001). There was a significant positive linear relationship between TKE value and LVPG (r=0.488, p=0.046). There was no significant relationship between NYHA functional class and TKE value (p=0.47) or LVPG (p=0.11). ROC curve analysis showed that optimal cut off point of TKE value between HOCM and HNCM (sensitivity=95%, specificity=62%, AUC=0.798) was 9.270 mJ. Multiple linear regression showed that there was significant association between severity of MR and combination of TKE (p=0.015) or LVPG (p–=0.012). A representative case demonstrated the significant reduction of TKE value 1 week and 3 months after alcohol septal reduction compared with that obtained before the procedure (Figure)
Conclusion
Our findings suggest that 4D Flow MRI can effectively evaluate the energy dissipation associated with LV outflow tract obstruction and TKE value is useful for identifying HOCM. TKE value also can be the novel parameter of the severity of HOCM.
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Affiliation(s)
- J Matsuda
- Nippon Medical School, Cardiovascular Intensive Care, Tokyo, Japan
| | - H Takano
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - T Sekine
- Nippon Medical School, Radiology, Tokyo, Japan
| | - H Sangen
- Nippon Medical School, Cardiovascular Intensive Care, Tokyo, Japan
| | - Y Kubota
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - Y Imori
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - J Nakata
- Nippon Medical School, Cardiovascular Intensive Care, Tokyo, Japan
| | - Y Saiki
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - H Miyachi
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - S Tara
- Nippon Medical School, Cardiovascular Intensive Care, Tokyo, Japan
| | - Y Hosokawa
- Nippon Medical School, Cardiovascular Intensive Care, Tokyo, Japan
| | - Y Tokita
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - T Yamamoto
- Nippon Medical School, Cardiovascular Intensive Care, Tokyo, Japan
| | - S Kumita
- Nippon Medical School, Radiology, Tokyo, Japan
| | - W Shimizu
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
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20
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Tanaka H, Takano H, Hyodo F, Matsuo M. Are Systemic Inflammation Biomarkers Useful As Prognostic Factors for Patients with Lung Cancer Treated with Stereotactic Body Radiation Therapy? Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Tanaka H, Kawaguchi M, Takano H, Shoda S, Miyoshi T, Iwasaki R, Hyodo F, Tomita H, Mori T, Hara A, Matsuo M. Activation of the Wnt/β-Catenin Signaling Pathway Causes Radioresistance in Colon Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Vegso K, Wu Y, Takano H, Hoshino M, Momose A. Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation. Sci Rep 2019; 9:7404. [PMID: 31118428 PMCID: PMC6531456 DOI: 10.1038/s41598-019-43589-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 12/11/2018] [Accepted: 04/24/2019] [Indexed: 11/09/2022] Open
Abstract
Four-dimensional phase computed tomography (4D phase CT) by an X-ray Talbot interferometer (XTI) with white synchrotron radiation has ever been demonstrated at a temporal resolution of about 1 s for soft-matter samples. However, the radiation damage to samples caused by white synchrotron radiation occasionally hampers our understanding of the sample dynamical properties. Based on the fact that XTI functions with X-rays of a bandwidth up to ca. 10% with performance comparable to that by monochromatic X-rays, filtering white synchrotron radiation to generate a 'pink-beam' of a 10% bandwidth is effective to reduce radiation damage without degrading the image quality and temporal resolution. We have therefore developed pink-beam 4D phase CT at SPring-8, Japan by installing a multilayer mirror with a 10% bandwidth and a 25 keV central photon energy. XTI optimal at this photon energy was built downstream, and a CMOS-based X-ray detector was used to achieve fast image acquisitions with an exposure time of 1 ms (or 0.5 ms) per moiré image. The resultant temporal resolution of pink-beam 4D phase CT was 2 s (1 s). We applied the pink-beam 4D phase CT to in-situ observation of polypropylene, poly(methyl methacrylate), and polycarbonate under infrared laser irradiation (1064 nm). The dynamics of melting, bubbling, and ashing were successfully visualized in 3D movies without problematic radiation damage by synchrotron radiation.
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Affiliation(s)
- Karol Vegso
- JASRI, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Yanlin Wu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Hidekazu Takano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Masato Hoshino
- JASRI, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Atsushi Momose
- JASRI, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan. .,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan.
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23
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Ohno N, Seki M, Ohshima H, Tanaka H, Kajita S, Hayashi Y, Natsume H, Takano H, Saeki I, Yoshikawa M, van der Meiden H. Investigation of recombination front region in detached plasmas in a linear divertor plasma simulator. Nuclear Materials and Energy 2019. [DOI: 10.1016/j.nme.2019.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Maynard-Burrows CL, Mclennan JV, Nicholson-Roberts TC, Takano H. Blister beetle dermatitis caused by cantharidin in South Sudan in Op TRENTON: a case series. J ROY ARMY MED CORPS 2019; 167:362-364. [PMID: 30826753 DOI: 10.1136/jramc-2019-001186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 02/12/2019] [Accepted: 02/12/2019] [Indexed: 11/04/2022]
Abstract
Cantharidin-producing blister beetles are found worldwide. The pathognomonic feature of their toxin is a blistering dermatitis that presents an environmental health hazard. Cutaneous exposure to cantharidin can produce blistering dermatitis, most commonly seen on exposed skin, in the Bentiu region of South Sudan. This should be treated with appropriate cleaning, debridement and regular dressing changes to cope with extensive initial exudate. The best dressing combinations found were initial treatment with povidone-iodine and hydrocolloid, followed by hydrocolloid only. Hydrocolloid dressings were found to be the most effective at staying in place with South Sudan's high humidity. Prevention strategies should include covering exposed skin, wearing wide-brimmed hats, neck scarves and enclosed footwear, and avoidance of working under white light. Medical personnel should engage with the chain of command to include appropriate force protection education within the arrivals brief.
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Affiliation(s)
| | - J V Mclennan
- Academic Department of Military Emergency Medicine (ADMEM), Royal Centre of Defence Medicine, Birmingham, West Midlands, United Kingdom.,Emergency Department, Royal Stoke University Hospital, Stoke-on-Trent, United Kingdom
| | - T C Nicholson-Roberts
- Academic Department of Military Anaesthesia and Critical Care, Royal Centre for Defence Medicine, Birmingham, UK
| | - H Takano
- Department of Life Sciences, Natural History Museum, London, UK
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25
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Hirose M, Hasegawa H, Kobara Y, Yamaguchi N, Takano H, Kobayashi Y. P1793Prognostic significance of myocardial DPP-4 expression level in patients with heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Hirose
- Chiba University Graduate School of Medicine, Department of Cardiology, Chiba, Japan
| | - H Hasegawa
- Chiba University Graduate School of Medicine, Department of Cardiology, Chiba, Japan
| | - Y Kobara
- Chiba University Graduate School of Medicine, Department of Cardiology, Chiba, Japan
| | - N Yamaguchi
- Chiba University Graduate School of Pharmaceutical Sciences, Department of Molecular Cardiovascular Pharmacology, Chiba, Japan
| | - H Takano
- Chiba University Graduate School of Pharmaceutical Sciences, Department of Molecular Cardiovascular Pharmacology, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiology, Chiba, Japan
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26
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Matsuda J, Takano H, Imori Y, Tokita Y, Sangen H, Nakamura Y, Kubota Y, Nakata J, Miyachi H, Tara S, Hosokawa Y, Yamamoto T, Takagi G, Asai K, Shimizu W. P3550Relationship between post-procedural right bundle branch block and outcome after alcohol septal ablation for hypertrophic obstructive cardiomyopathy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Matsuda
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - H Takano
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - Y Imori
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - Y Tokita
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - H Sangen
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - Y Nakamura
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - Y Kubota
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - J Nakata
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - H Miyachi
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - S Tara
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - Y Hosokawa
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - T Yamamoto
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - G Takagi
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - K Asai
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
| | - W Shimizu
- Nippon Medical School, Cardiovasculer medicine, Tokyo, Japan
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27
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Matsumura M, Mizutani E, Suzuki T, Tsurumi H, Uni R, Higashihara T, Nakahara K, Takano H. Successful Diagnosis and Treatment of Peritoneal Dialysis-Related Pleuroperitoneal Communication by Contrast-Enhanced Ultrasonography and Thoracoscopic Surgery. Perit Dial Int 2018; 37:485-486. [PMID: 28676518 DOI: 10.3747/pdi.2016.00295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- M Matsumura
- Department of Nephrology, Tokyo Teishin Hospital, Japan
| | - E Mizutani
- Department of Thoracic Surgery, Tokyo Teishin Hospital, Japan
| | - T Suzuki
- Department of Radiology, Tokyo Teishin Hospital, Japan
| | - H Tsurumi
- Department of Nephrology, Tokyo Teishin Hospital, Japan
| | - R Uni
- Department of Nephrology, Tokyo Teishin Hospital, Japan
| | - T Higashihara
- Department of Nephrology, Tokyo Teishin Hospital, Japan
| | - K Nakahara
- Department of Thoracic Surgery, Tokyo Teishin Hospital, Japan
| | - H Takano
- Department of Nephrology, Tokyo Teishin Hospital, Japan
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28
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Nakatani T, Takano H, Noda H, Taenaka Y, Umezu M, Kinoshita M, Fukuda S, Matsuda T, Iwata H, Takatani S, Tatsumi E, Yagura A, Sekii Y, Akutsu T. Prerequisites to Salvage Profound Biventricular Failure Patients with Ventricular Assist Devices. Int J Artif Organs 2018. [DOI: 10.1177/039139888901200406] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We conducted chronic experiments to determine how to treat profound biventricular failure systematically with ventricular assist devices (VADs) and to analyze the factors that affect prognoses for this condition. Anoxic arrest was induced in ten goats by aortic cross-clamping under normothermic conditions (38.5° C) for 30 (n= 3), 45 (n= 1), and 60 (n= 6) minutes. A left ventricular assist device (LVAD) was implanted in eight animals, and a biventricular assist device (BVAD) was used in two. Three goats — two of which had undergone anoxic arrest for 30 minutes and one for 60 minutes — whose right atrial pressure (RAP) was approximately 18 mm Hg during the acute stage, recovered in two to three weeks, and the pumps were successfully removed. Pathological findings in these animals showed scattered areas of surviving myocardium, with connective tissue replacing the degenerated myocardium. The remaining five LVAD goats required higher RAPs to maintain circulation and died from various causes. Maintaining circulation without volume loading, even in the presence of arrhythmias, was easier with the BVAD. One BVAD animal that underwent 45 minutes of anoxic arrest recovered from right ventricular failure, and the right pump was removed. The second goat (anoxic arrest, 60 min) on the BVAD failed to recover. Autopsy of the myocardium revealed a thin ventricular wall. Our studies show that the use of VADs allows time for a failing heart to recover, but the potential for healing is affected by the severity of myocardial damage prior to VAD application. We believe that although LVADs can maintain circulation with high RAPs, the use of BVADs might be more beneficial for maintaining systemic organ function in cases of persistent biventricular failure.
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Affiliation(s)
- T. Nakatani
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - H. Takano
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - H. Noda
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - Y. Taenaka
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - M. Umezu
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - M. Kinoshita
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - S. Fukuda
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - T. Matsuda
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - H. Iwata
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - S. Takatani
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - E. Tatsumi
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - A. Yagura
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - Y. Sekii
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
| | - T. Akutsu
- Department of Artificial Organs, National Cardiovascular Center, Research Institute, Osaka - Japan
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Noda H, Takano H, Taenaka Y, Nakatani T, Umezu M, Kinoshita M, Tatsumi E, Yagura A, Sekii H, Kito Y, Ohara K, Tanaka K, Kumon K, Hiramori K, Yutani C, Beppu S, Fujita T, Akutsu T, Manabe H. Treatment of Acute Myocardial Infarction with Cardiogenic Shock using Left Ventricular Assist Device. Int J Artif Organs 2018. [DOI: 10.1177/039139888901200308] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We have treated ten cardiogenic shock patients after acute myocardial infarction (AMI) with a left ventricular assist device (LVAD). These patients were later divided into three groups: the first group with ventricular septal perforation, the second with aorto-coronary bypass grafting (ACBG) before LVAD implantation and the third group without ACBG. LVAD maintained the systemic circulation in each group, and cardiac function recovered enough to remove LVAD in 70% of the total patients. Two of three patients in the first group were discharged from hospital. Two weaned cases in the second group died of multiple organ failure and one was discharged, and hemorrhagic necrosis was seen in the bypassed area of the myocardium. One patient of the third group could not be weaned from LVAD because of respiratory failure though his heart function began to recover. Another case in the third group underwent bypass grafting after removal of LVAD. However ACBG surgery should be done very carefully because a patient in shock is occasionally intolerant to major surgery. In all groups, the major cause of death was multiple organ failure which was probably caused by the prolonged low output condition prior to LVAD application. In the light of this experience, it appears that LVAD should be applied before irreversible damage occurs to major organs, including the heart itself. To ensure the timely application of LVAD, some way must be found to introduce systematic application of LVAD into the normal course of AMI treatment.
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Affiliation(s)
- H. Noda
- National Cardiovascular Center, Osaka - Japan
| | - H. Takano
- National Cardiovascular Center, Osaka - Japan
| | - Y. Taenaka
- National Cardiovascular Center, Osaka - Japan
| | - T. Nakatani
- National Cardiovascular Center, Osaka - Japan
| | - M. Umezu
- National Cardiovascular Center, Osaka - Japan
| | | | - E. Tatsumi
- National Cardiovascular Center, Osaka - Japan
| | - A. Yagura
- National Cardiovascular Center, Osaka - Japan
| | - H. Sekii
- National Cardiovascular Center, Osaka - Japan
| | - Y. Kito
- National Cardiovascular Center, Osaka - Japan
| | - K. Ohara
- National Cardiovascular Center, Osaka - Japan
| | - K. Tanaka
- National Cardiovascular Center, Osaka - Japan
| | - K. Kumon
- National Cardiovascular Center, Osaka - Japan
| | - K. Hiramori
- National Cardiovascular Center, Osaka - Japan
| | - C. Yutani
- National Cardiovascular Center, Osaka - Japan
| | - S. Beppu
- National Cardiovascular Center, Osaka - Japan
| | - T. Fujita
- National Cardiovascular Center, Osaka - Japan
| | - T. Akutsu
- National Cardiovascular Center, Osaka - Japan
| | - H. Manabe
- National Cardiovascular Center, Osaka - Japan
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Nishimura T, Tatsumi E, Nishinaka T, Taenaka Y, Nakata M, Takano H. Prolonged Nonpulsatile Left Heart Bypass Diminishes Vascular Contractility. Int J Artif Organs 2018. [DOI: 10.1177/039139889902200707] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We investigated possible functional changes in the vascular system accompanying the morphological change in prolonged nonpulsatile left heart bypass (LHB). Three adult goats underwent pulsatile LHB. Two weeks postoperatively, the pulsatile ventricular assist device was replaced with a centrifugal pump and nonpulsatile LHB was subsequently conducted for 4 weeks. The mean aortic pulse pressure was 39 and 16 mmHg during the pulsatile and nonpulsatile LHB, respectively. Systemic vascular resistance (SVR) and plasma norepinephrine levels were measured at the end of pulsatile LHB (PUL), and at the end of 1st, 2nd, 3rd, and 4th week of nonpulsatile LHB (NP1w, NP2w, NP3w, NP4w, respectively). At each point, 50 μg/kg nitroglycerin and 1μg/kg norepinephrine were injected and the minimal and maximal values of SVR after injection were calculated as parameters reflecting the vascular tonus and contractility. The SVR and plasma nor epinephrine level did not significantly change during the entire course (SVR: 1106, 895, 982, 920, and 938 dyne·sec·cm−5; norepinephrine level: 0.3, 0.2, 0.1, 0.2, and 0.1 ng/ml; at PUL, NP1w, NP2w, NP3w, and NP4w, respectively). The minimal value of SVR after nitroglycerin injection remained unchanged, indicating that vascular tonus was stable during the entire course (618, 687, 623, 560, 653 dyne·sec·cm−5, respectively). In contrast, the maximal value of SVR after norepinephrine injection at NP3w and NP4w (1695 and 1759 yne·sec·cm−5) became significantly reduced compared to that at PUL (2346 dyne·sec·cm−5). These results indicated that prolonged nonpulsatile left heart bypass did not affect the vascular tonus, but significantly diminished the vascular contractility.
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Affiliation(s)
- T. Nishimura
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - E. Tatsumi
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - T. Nishinaka
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - Y Taenaka
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - M. Nakata
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - H. Takano
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
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31
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Karasawa N, Mitsutake A, Takano H. Two-step relaxation mode analysis with multiple evolution times applied to all-atom molecular dynamics protein simulation. Phys Rev E 2018; 96:062408. [PMID: 29347325 DOI: 10.1103/physreve.96.062408] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Indexed: 01/16/2023]
Abstract
Proteins implement their functionalities when folded into specific three-dimensional structures, and their functions are related to the protein structures and dynamics. Previously, we applied a relaxation mode analysis (RMA) method to protein systems; this method approximately estimates the slow relaxation modes and times via simulation and enables investigation of the dynamic properties underlying the protein structural fluctuations. Recently, two-step RMA with multiple evolution times has been proposed and applied to a slightly complex homopolymer system, i.e., a single [n]polycatenane. This method can be applied to more complex heteropolymer systems, i.e., protein systems, to estimate the relaxation modes and times more accurately. In two-step RMA, we first perform RMA and obtain rough estimates of the relaxation modes and times. Then, we apply RMA with multiple evolution times to a small number of the slowest relaxation modes obtained in the previous calculation. Herein, we apply this method to the results of principal component analysis (PCA). First, PCA is applied to a 2-μs molecular dynamics simulation of hen egg-white lysozyme in aqueous solution. Then, the two-step RMA method with multiple evolution times is applied to the obtained principal components. The slow relaxation modes and corresponding relaxation times for the principal components are much improved by the second RMA.
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Affiliation(s)
- N Karasawa
- Department of Physics, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - A Mitsutake
- Department of Physics, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - H Takano
- Department of Physics, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
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Tanaka Y, Takano H, Saito S, Genkai N, Abe H. Transorbital approach of transcranial doppler (TCD) in perioperative management of carotid artery stenting (CAS). J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Kato K, Komiyama S, Takeshima N, Takano H, Inoue A, Hongo A, Asai-Sato M, Arakawa A, Kubushiro K, Kamiura S, Sugiyama T. Prospective cohort study of bevacizumab plus standard platinum based chemotherapy as front-line treatment for advanced epithelial ovarian cancer, fallopian tube cancer, or primary peritoneal cancer: Japanese Gynecologic Oncology Group study (JGOG3022). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx372.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Hirose M, Takano H, Hasegawa H, Hashimoto N, Tadokoro H, Takemura G, Kobayashi Y. P583DPP-4 inhibition ameliorates the progression of heart failure after pressure overload through modulation of collagen type 3. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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35
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Kagoshima Y, Miyagawa T, Kagawa S, Takeda S, Takano H. Note: Measurement of synchrotron radiation phase-space beam properties to verify astigmatism compensation in Fresnel zone plate focusing optics. Rev Sci Instrum 2017; 88:086110. [PMID: 28863654 DOI: 10.1063/1.4996931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The intensity distribution in phase space of an X-ray synchrotron radiation beamline was measured using a pinhole camera method, in order to verify astigmatism compensation by a Fresnel zone plate focusing optical system. The beamline is equipped with a silicon double crystal monochromator. The beam size and divergence at an arbitrary distance were estimated. It was found that the virtual source point was largely different between the vertical and horizontal directions, which is probably caused by thermal distortion of the monochromator crystal. The result is consistent with our astigmatism compensation by inclining a Fresnel zone plate.
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Affiliation(s)
- Yasushi Kagoshima
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Takamasa Miyagawa
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Saki Kagawa
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Shingo Takeda
- SPring-8 Service Co., Ltd, 1-20-5 Kouto, Shingu, Tatsuno, Hyogo 679-5165, Japan
| | - Hidekazu Takano
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
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36
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Ueda T, Takano H, Suzuki M, Yamamoto S, Motoori K, Nagashima T, Yagata H, Ito H. Dynamic helical CT-guided needle localization of non-palpable and mammographically occult breast lesions: Case reports. Acta Radiol 2016; 42:383-5. [PMID: 11442462 DOI: 10.1080/028418501127347025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Dynamic helical CT-guided needle localization of non-palpable and mammographically occult breast lesions is described. Dynamic helical CT-technique enabled fast volume scanning of the whole breast during the early contrast enhancement phase, which provided sufficient contrast to localize the target lesions. The procedures were successfully completed without complications.
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Affiliation(s)
- T Ueda
- Department of Radiology and First Department of Surgery, Chiba University School of Medicine, Chiba, Japan
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37
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Arimoto T, Takano H, Inoue K, Yanagisawa R, Yoshino S, Yamaki K, Yoshikawa T. Pulmonary Exposure to Diesel Exhaust Particle Components Enhances Circulatory Chemokines during Lung Inflammation. Int J Immunopathol Pharmacol 2016; 20:197-201. [PMID: 17346445 DOI: 10.1177/039463200702000124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study examines the effects of DEP components on circulatory CC and CXC chemokines, potent activators and chemoattractants for macrophage and leukocyte subpopulations, in a murine model of lung inflammation. 1CR mice were divided into six experimental groups which received intratracheal inoculation of vehicle, LPS alone (2.5 mg/kg), organic chemicals in DEP (DEP-OC: 4 mg/kg) extracted with dichloromethane, residual carbonaceous nuclei after the extraction (washed DEP: 4 mg/kg), DEP-OC + LPS, or washed DEP + LPS. Intratracheal instillation of each DEP component alone did not significantly change the circulatory level of macrophage inflammatory protein (MIP)-1α, MIP-2, and macrophage chemoattractant protein-1 (MCP-1) 24 h after the exposure as compared with vehicle instilled alone. In the LPS group, MCP-1, but not MIP-1α or MIP-2, was significantly greater than in the vehicle group. The combined administration of LPS and washed DEP caused a further three to five-fold increase in MIP-1α, MIP-2, and MCP-1 proteins in the serum as compared with LPS administered alone. No significant difference between the LPS + DEP-OC group and the LPS group was observed. These results indicate that pulmonary exposure to washed DEP enhances circulatory level of chemokines during lung inflammation. The enhancement may be important in the aggravations of systemic inflammatory responses and ischemic cardiovascular conditions associated with air pollution.
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Inoue K, Takano H, Oda T, Yanagisawa R, Tamura H, Ohno N, Adachi Y, Ishibashi K, Yoshikawa T. Candida Soluble Cell Wall β-D-Glucan Induces Lung Inflammation in Mice. Int J Immunopathol Pharmacol 2016; 20:499-508. [PMID: 17880763 DOI: 10.1177/039463200702000308] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bioactivity of cell wall component(s) of fungi has not been fully elucidated, especially in vivo. We isolated Candida soluble beta-D-glucan (CSBG) from Candida albicans (C. albicans). We investigated the effects of airway exposure to CSBG on the immune systems in the airways in mice. CSBG exposure induced neutrophilic and eosinophilic inflammation in the lung, which was concomitant with the increased local expression of proinflammatory cytokines including tumor necrosis factor - α, interleukin (IL)-1 β, IL-6, macrophage inflammatory protein -1 α, macrophage chemoattractant protein -1, RANTES (regulated on activation and normal T cells expressed and secreted), and eotaxin. The lung inflammation with enhanced expression of proinflammatory proteins caused by CSBG was directly related to its structure, since structurally degraded products of CSBG by formic acid induced negligible responses in the lung. CSBG enhanced nuclear localization of phosphorylated signal transducer and activator of transcription (STAT)-6 in the lung. These results suggest that airway exposure to CSBG induces lung inflammation, at least partly, via the enhanced expression of proinflammatory cytokines and the activation of STAT-6 pathway, and can be a proper murine model for fungal lung inflammation.
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Affiliation(s)
- K Inoue
- Environmental Health Sciences Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
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39
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Takano H, Takahashi T, Nakata A, Nogami S, Yusa K, Kuwajima S, Yamazaki M, Fukuda M. Facilitation of bone resorption activities in synovial lavage fluid patients with mandibular condyle fractures. J Oral Rehabil 2016; 43:333-9. [DOI: 10.1111/joor.12388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2016] [Indexed: 12/01/2022]
Affiliation(s)
- H. Takano
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - T. Takahashi
- Division of Maxillofacial Surgery Department of Oral Medicine and Surgery Graduate School of Dentistry Tohoku University Sendai MiyagiJapan
| | - A. Nakata
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - S. Nogami
- Division of Maxillofacial Surgery Department of Oral Medicine and Surgery Graduate School of Dentistry Tohoku University Sendai MiyagiJapan
| | - K. Yusa
- Department of Dentistry Oral and Maxillofacial‐Plastic and Reconstructive Surgery School of Medicine Faculty of Medicine Yamagata University Yamagata Japan
| | - S. Kuwajima
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - M. Yamazaki
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - M. Fukuda
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
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40
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Tanaka M, Inoue K, Shimada A, Takano H. Ex vivo effects of naphthoquinones on allergen-sensitized mononuclear cells in mice. Int J Immunopathol Pharmacol 2016; 29:461-8. [PMID: 26884456 DOI: 10.1177/0394632016632221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 01/21/2016] [Indexed: 11/15/2022] Open
Abstract
Naphthoquinone (NQ), one of the extractable chemical compounds of diesel exhaust particles, enhances allergic asthma traits in mice. However, it remains unknown whether: (1) several types of NQs have the same potential to facilitate allergies; and (2) NQs synergistically disrupt the functional phenotypes of immune cells. The aim of the present study was to investigate the effects of two types (1,2- and 1,4-) of NQs on sensitized mononuclear cells using an ex vivo assay. Male BALB/c mice were repeatedly and intraperitoneally administered ovalbumin (OVA: 20 µg) plus alum with or without two different doses of each NQ. After the final administration, splenocytes (mononuclear cells) were isolated from these mice and cultured in the presence of OVA. Helper T-related cytokines in the culture supernatants and downstream molecules were then evaluated. Protein levels of interferon-γ were higher in the supernatants from 1,2-NQ and 1,4-NQ at low dose + OVA-exposed mononuclear cells following the OVA stimulation than in those from OVA-exposed mononuclear cells. Interleukin (IL)-13 levels were higher in the supernatants from low dose NQs + OVA-exposed mononuclear cells. IL-17 levels were significantly higher in the supernatants from low dose 1,2-NQ + OVA-exposed mononuclear cells. The quantity of phosphorylated STAT6 in the nuclei of these cells was significantly greater in the low dose NQ + OVA groups than in the OVA group. These findings suggest NQs differently enhance allergen sensitization in the context of the Th response against mononuclear cells such as lymphocytes.
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Affiliation(s)
- M Tanaka
- Center for Medical Science, International University of Health and Welfare, Kitakanemaru, Ohtawara, Tochigi, Japan
| | - K Inoue
- School of Nursing, University of Shizuoka, Shizuoka, Japan
| | - A Shimada
- Laboratory of Pathology, School of Life and Environmental Science, Azabu University, Sagamihara, Kanagawa, Japan
| | - H Takano
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan
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Inoue K, Takano H. Epidemiology of asthma exacerbations and their relation with environmental factors in the Basque Country. Clin Exp Allergy 2016; 45:1475. [PMID: 26112827 DOI: 10.1111/cea.12586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Inoue
- School of Nursing, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - H Takano
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
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42
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Tsusaka Y, Takeda S, Takano H, Yokoyama K, Kagoshima Y, Matsui J. X-ray topography using the forward transmitted beam under multiple-beam diffraction conditions. Rev Sci Instrum 2016; 87:023701. [PMID: 26931854 DOI: 10.1063/1.4940443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
X-ray topographs are taken for a sapphire wafer with the [0001] surface normal, as an example, by forward transmitted synchrotron x-ray beams combined with two-dimensional electronic arrays in the x-ray detector having a spatial resolution of 1 μm. They exhibit no shape deformation and no position shift of the dislocation lines on the topographs. Since the topography is performed under multiple-beam diffraction conditions, the topographic images of a single diffraction (two-wave approximation condition) or plural diffractions (six-wave approximation condition) can be recorded without large specimen position changes. As usual Lang topographs, it is possible to determine the Burgers vector of each dislocation line. Because of high parallelism of the incoming x-rays and linear sensitivity of the electronic arrays to the incident x-rays, the present technique can be used to visualize individual dislocations in single crystals of the dislocation density as high as 1 × 10(5) cm(-2).
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Affiliation(s)
- Y Tsusaka
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Hyogo 678-1297, Japan
| | - S Takeda
- SPring-8 Service Co., Ltd., 1-20-5, Kouto, Shingu, Tatsuno, Hyogo 679-5165, Japan
| | - H Takano
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Hyogo 678-1297, Japan
| | - K Yokoyama
- Synchrotron Radiation Nanotechnology Center, University of Hyogo, 1-490-2, Kouto, Shingu, Tatsuno, Hyogo 679-5165, Japan
| | - Y Kagoshima
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Hyogo 678-1297, Japan
| | - J Matsui
- Synchrotron Radiation Nanotechnology Center, University of Hyogo, 1-490-2, Kouto, Shingu, Tatsuno, Hyogo 679-5165, Japan
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Fukuoka A, Matsushita K, Morikawa T, Takano H, Yoshimoto T. Diesel exhaust particles exacerbate allergic rhinitis in mice by disrupting the nasal epithelial barrier. Clin Exp Allergy 2015. [DOI: 10.1111/cea.12597] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- A. Fukuoka
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
| | - K. Matsushita
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
| | - T. Morikawa
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
- Department of Otorhinolaryngology-Head and Neck Surgery; Faculty of Medical Science; University of Fukui; Fukui Japan
| | - H. Takano
- Environmental Health Division; Department of Environmental Engineering; Graduate School of Engineering; Kyoto University; Kyoto Japan
| | - T. Yoshimoto
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
- Department of Immunology; Hyogo College of Medicine; Nishinomiya Hyogo Japan
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Tanaka M, Inoue K, Kitamura Y, Shimada A, Takano H. In vitro action of sho-seiryu-to on allergen-exposed mononuclear cells. Int J Immunopathol Pharmacol 2015; 27:607-10. [PMID: 25572740 DOI: 10.1177/039463201402700416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Although Sho-seiryu-to (SST), used as a traditional herbal (Kampo) medicine mainly in China and Korea, is shown to have immunomodulating potential, such as an anti-allergic one, its underlying mechanism has not been completely clarified. To partially address the issue, we explored its effects on allergen-exposed mononuclear cells. Male balb/c mice were intraperitoneally administered ovalbumin (OVA: 20 μg) plus alum or vehicle twice (Day 0 and Day 14). At Day 21, mice were sacrificed and splenocytes (mononuclear cells) were isolated and cultured in the presence or absence of OVA with or without SST. Thereafter, helper T-related cytokines in the culture supernatants were evaluated by means of ELISA. Protein level of interferon-γ was lower than 5.0 pg/mL in the supernatants from OVA non-exposed or -exposed mononuclear cells in the presence or absence of OVA stimulation. On the other hand, SST induced the cytokine from both types of mononuclear cells in the presence (P < 0.05) or absence of OVA stimulation as compared to corresponding control. By contrast, interleukin (IL)-4 level tended to be decreased by SST in OVA-non-exposed mononuclear cells as did IL-13 in both non-exposed and exposed mononuclear cells as compared to vehicle. In conclusion, immunoregulating efficacy by SST on allergy-prone subjects may include, at least in part, restoring helper T balance mainly through hyperproduction of IFN-γ against mononuclear cells such as lymphocytes.
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Affiliation(s)
- M Tanaka
- Center for Medical Science, International University of Health and Welfare, Kitakanemaru, Ohtawara, Tochigi, Japan
| | - K Inoue
- Center for Medical Science, International University of Health and Welfare, Kitakanemaru, Ohtawara, Tochigi, Japan
| | - Y Kitamura
- Center for Medical Science, International University of Health and Welfare, Kitakanemaru, Ohtawara, Tochigi, Japan
| | - A Shimada
- Laboratory of Pathology, School of Life and Environmental Science, Azabu University
| | - H Takano
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan
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Fukushima W, Honda A, Murayama R, Matsuda Y, Tsuji K, Hayashi T, Sawahara T, Ozawa S, Okamoto Y, Takano H. Effects of cedar pollen extract on the immune system in vitro. Allergol Immunopathol (Madr) 2015; 43:222-4. [PMID: 24929971 DOI: 10.1016/j.aller.2013.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 12/09/2013] [Accepted: 12/23/2013] [Indexed: 10/25/2022]
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Saito T, Asai K, Sato S, Takano H, Mizuno K, Shimizu W. Ultrastructural features of cardiomyocytes in dilated cardiomyopathy with initially decompensated heart failure as a predictor of prognosis. Eur Heart J 2014; 36:724-32. [DOI: 10.1093/eurheartj/ehu404] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Takano H, Hasegawa H, Narumi H, Shindo S, Mizuma H, Kuwabara Y, Kobayashi Y, Komuro I. Retraction: Effects of valsartan and amlodipine on home blood pressure and cardiovascular events in Japanese hypertensive patients: a subanalysis of the VART. J Hum Hypertens 2014; 29:337. [PMID: 25296718 DOI: 10.1038/jhh.2014.90] [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: 11/09/2022]
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Momota Y, Kani K, Takano H, Azuma M. Cerebellopontine angle mass mimicking lingual nerve injury after dental implant placement: a case report. Aust Dent J 2014; 60:412-5. [PMID: 25280059 DOI: 10.1111/adj.12224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2014] [Indexed: 11/28/2022]
Abstract
This is a rare case report of a cerebellopontine angle (CPA) mass mimicking lingual nerve injury after a dental implant placement. Lingual nerve injury is a common complication following dental implant placement. CPA masses are likely to cause symptomatic trigeminal neuralgia, and thus can mimic and be easily confused with oral diseases. We experienced a case of CPA mass mimicking lingual nerve injury after dental implant placement. The patient was a 57-year-old Japanese female who complained of glossalgia. She underwent dental implant placement in the mandible before visiting our clinic. Panoramic x-ray radiography revealed no abnormalities; the salivary flow rate by gum test was 7.0 ml/10 min. She was diagnosed with lingual nerve injury and secondary burning mouth syndrome. Vitamin B12 and oral moisturizer did not provide relief; furthermore, numbness in the lower lip emerged. A Semmes Weinstein test demonstrated elevation of her sensitivity threshold. Finally, magnetic resonance imaging revealed a 20-mm diameter mass in the CPA. The patient is now being followed under conservative management. Our experience underscores the importance of including CPA mass in the differential diagnosis of dental diseases.
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Affiliation(s)
- Y Momota
- Department of Oral Medicine, Institute of Health Biosciences, Graduate Faculty of Dentistry, Tokushima University, Japan
| | - K Kani
- Department of Oral Medicine, Institute of Health Biosciences, Graduate Faculty of Dentistry, Tokushima University, Japan
| | - H Takano
- Department of Oral Medicine, Institute of Health Biosciences, Graduate Faculty of Dentistry, Tokushima University, Japan
| | - M Azuma
- Department of Oral Medicine, Institute of Health Biosciences, Graduate Faculty of Dentistry, Tokushima University, Japan
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Nakamura S, Takano H, Kubota Y, Asai K, Shimizu W. Impact of the efficacy of thrombolytic therapy on the mortality of patients with acute submassive pulmonary embolism: a meta-analysis. J Thromb Haemost 2014; 12:1086-95. [PMID: 24829097 DOI: 10.1111/jth.12608] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 05/08/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND The efficacy of thrombolytic therapy in patients with submassive pulmonary embolism (PE) remains unclear. Previous meta-analyses have not separately reported the proportion of patients with submassive PE. OBJECTIVE We assessed the effect of thrombolytic therapy on mortality, recurrent PE, clinical deterioration requiring treatment escalation and bleeding in patients with submassive PE. METHODS The MEDLINE, EMBASE and Cochrane Library databases were searched to identify all relevant randomized controlled trials comparing adjunctive thrombolytic therapy with heparin alone as initial treatments in patients with acute submassive PE, and reported 30-day mortality or in-hospital clinical outcomes. RESULTS A total of 1510 patients were enrolled in this meta-analysis. No significant differences were apparent in the composite endpoint of all-cause death or recurrent PE between the adjunctive thrombolytic therapy arm and the heparin-alone arm (3.1% vs. 5.4%; RR, 0.64 [0.32-1.28]; P = 0.2). Adjunctive thrombolytic therapy significantly reduced the incidence of the composite endpoint of all-cause death or clinical deterioration (3.9% vs. 9.4%; RR, 0.44; P < 0.001). There were no statistically significant associations for major bleeding when adjunctive thrombolytic therapy was compared with heparin therapy alone (6.6% vs. 1.9%; P = 0.2). CONCLUSIONS This meta-analysis shows that adjunctive thrombolytic therapy does not significantly reduce the risk of mortality or recurrent PE in patients with acute submassive PE, but that adjuvant thrombolytic therapy prevents clinical deterioration requiring the escalation of treatment in patients with acute submassive PE. Bleeding risk assessment might be the most successful approach for improving clinical outcomes and patient-specific benefit.
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Affiliation(s)
- S Nakamura
- Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan
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Takano H, Konishi S, Koyama T, Tsusaka Y, Ichimaru S, Ohchi T, Takenaka H, Kagoshima Y. Point spread function measurement of an X-ray beam focused by a multilayer zone plate with narrow annular aperture. J Synchrotron Radiat 2014; 21:446-448. [PMID: 24562567 DOI: 10.1107/s1600577513034644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/26/2013] [Indexed: 06/03/2023]
Abstract
The experimental procedure for obtaining the point spread function (PSF) of a focusing beam generated using an X-ray multilayer zone plate (MZP) with a narrow annular aperture has been developed. It was possible to reconstruct the PSF by applying the tomographic process to the measured dataset consisting of line spread functions (LSFs) in every radial direction on the focal plane. The LSFs were measured by a knife-edge scanning method of detecting scattered intensity. In the experimental work, quasi-monochromatic undulator radiation with a first harmonic energy of 20 keV was directly focused without a monochromator by the MZP, and the PSF was measured using this procedure. As a result, a near diffraction-limited focused beam size of 46 nm full width at half-maximum was obtained.
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Affiliation(s)
- Hidekazu Takano
- Center for Novel Material Science Under Multi-Extreme Conditions, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 578-1297, Japan
| | - Shigeki Konishi
- Center for Novel Material Science Under Multi-Extreme Conditions, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 578-1297, Japan
| | - Takahisa Koyama
- Center for Novel Material Science Under Multi-Extreme Conditions, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 578-1297, Japan
| | - Yoshiyuki Tsusaka
- Center for Novel Material Science Under Multi-Extreme Conditions, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 578-1297, Japan
| | - Satoshi Ichimaru
- NTT Advanced Technology Corporation, 3-1 Morinosato, Wakamiya, Atsugi, Kanagawa 243-0124, Japan
| | - Tadayuki Ohchi
- NTT Advanced Technology Corporation, 3-1 Morinosato, Wakamiya, Atsugi, Kanagawa 243-0124, Japan
| | - Hisataka Takenaka
- NTT Advanced Technology Corporation, 3-1 Morinosato, Wakamiya, Atsugi, Kanagawa 243-0124, Japan
| | - Yasushi Kagoshima
- Center for Novel Material Science Under Multi-Extreme Conditions, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 578-1297, Japan
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