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Katoh M, Fujii T, Tabuchi Y, Shimizu T, Sakai H. Negative regulation of thyroid adenoma-associated protein (THADA) in the cardiac glycoside-induced anti-cancer effect. J Physiol Sci 2024; 74:23. [PMID: 38561668 PMCID: PMC10985892 DOI: 10.1186/s12576-024-00914-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/06/2024] [Indexed: 04/04/2024]
Abstract
Cardiac glycosides, known as inhibitors of Na+,K+-ATPase, have anti-cancer effects such as suppression of cancer cell proliferation and induction of cancer cell death. Here, we examined the signaling pathway elicited by cardiac glycosides in the human hepatocellular carcinoma HepG2 cells and human epidermoid carcinoma KB cells. Three kinds of cardiac glycosides (ouabain, oleandrin, and digoxin) inhibited the cancer cell proliferation and decreased the expression level of thyroid adenoma-associated protein (THADA). Interestingly, the knockdown of THADA inhibited cancer cell proliferation, and the proliferation was significantly rescued by re-expression of THADA in the THADA-knockdown cells. In addition, the THADA-knockdown markedly decreased the expression level of L-type amino acid transporter LAT1. Cardiac glycosides also reduced the LAT1 expression. The LAT1 inhibitor, JPH203, significantly weakened the cancer cell proliferation. These results suggest that the binding of cardiac glycosides to Na+,K+-ATPase negatively regulates the THADA-LAT1 pathway, exerting the anti-proliferative effect in cancer cells.
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Affiliation(s)
- Mizuki Katoh
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Takuto Fujii
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama, 930-0194, Japan
| | - Takahiro Shimizu
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Hideki Sakai
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
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Nakamura K, Mukai S, Takezawa Y, Natori Y, Miyazaki A, Ide Y, Takebuchi M, Nanato K, Katoh M, Suzuki H, Sakyu A, Kojima T, Kise E, Hanafusa H, Kosho T, Kuwahara K, Sekijima Y. Clinical utility of urinary mulberry bodies/cells testing in the diagnosis of Fabry disease. Mol Genet Metab Rep 2023; 36:100983. [PMID: 37323223 PMCID: PMC10267638 DOI: 10.1016/j.ymgmr.2023.100983] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/17/2023] Open
Abstract
Introduction Variants in the galactosidase alpha (GLA) gene cause Fabry disease (FD), an X-linked lysosomal storage disorder caused by α-galactosidase A (α-GAL) deficiency. Recently, disease-modifying therapies have been developed, and simple diagnostic biomarkers for FD are required to initiate these therapies in the early stages of the disease. Detection of urinary mulberry bodies and cells (MBs/MCs) is beneficial for diagnosing FD. However, few studies have evaluated the diagnostic accuracy of urinary MBs/MCs in FD. Herein, we retrospectively evaluated the diagnostic ability of urinary MBs/MCs for FD. Methods We analyzed the medical records of 189 consecutive patients (125 males and 64 females) who underwent MBs/MCs testing. Out of these, two female patients had already been diagnosed with FD at the time of testing, and the remaining 187 patients were suspected of having FD and underwent both GLA gene sequencing and/or α-GalA enzymatic testing. Results Genetic testing did not confirm the diagnosis in 50 females (26.5%); hence, they were excluded from the evaluation. Two patients were previously diagnosed with FD, and sixteen were newly diagnosed. Among these 18 patients, 15, including two who had already developed HCM at diagnosis, remained undiagnosed until targeted genetic screening of at-risk family members of patients with FD was performed. The accuracy of urinary MBs/MCs testing exhibited a sensitivity of 0.944, specificity of 1, positive predictive value of 1, and negative predictive value of 0.992. Conclusions MBs/MCs testing is highly accurate in diagnosing FD and should be considered during the initial evaluation prior to genetic testing, particularly in female patients.
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Affiliation(s)
- Katsuya Nakamura
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - Saki Mukai
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Yuka Takezawa
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Yuika Natori
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Akari Miyazaki
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Yuichiro Ide
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Mayu Takebuchi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Kana Nanato
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Mizuki Katoh
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Harue Suzuki
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Akiko Sakyu
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - Tomomi Kojima
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - Emiko Kise
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - Hiroaki Hanafusa
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - Tomoki Kosho
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
- Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Koichiro Kuwahara
- Department of Cardiovascular Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoshiki Sekijima
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
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Hikosaka Y, Kaneyasu T, Wada S, Kohguchi H, Ota H, Nakamura E, Iwayama H, Fujimoto M, Hosaka M, Katoh M. Frequency-domain interferometry for the determination of time delay between two extreme-ultraviolet wave packets generated by a tandem undulator. Sci Rep 2023; 13:10292. [PMID: 37357245 DOI: 10.1038/s41598-023-37449-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/21/2023] [Indexed: 06/27/2023] Open
Abstract
Synchrotron radiation, emitted by relativistic electrons traveling in a magnetic field, has poor temporal coherence. However, recent research has proved that time-domain interferometry experiments, which were thought to be enabled by only lasers of excellent temporal coherence, can be implemented with synchrotron radiation using a tandem undulator. The radiation generated by the tandem undulator comprises pairs of light wave packets, and the longitudinal coherence within a light wave packet pair is used to achieve time-domain interferometry. The time delay between two light wave packets, formed by a chicane for the electron trajectory, can be adjusted in the femtosecond range by a standard synchrotron technology. In this study, we show that frequency-domain spectra of the tandem undulator radiation exhibit fringe structures from which the time delay between a light wave packet pair can be determined with accuracy on the order of attoseconds. The feasibility and limitations of the frequency-domain interferometric determination of the time delay are examined.
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Affiliation(s)
- Y Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama, 930-0194, Japan.
| | - T Kaneyasu
- SAGA Light Source, Tosu, 841-0005, Japan
- Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - S Wada
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan
| | - H Kohguchi
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan
| | - H Ota
- Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - E Nakamura
- Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - H Iwayama
- Institute for Molecular Science, Okazaki, 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan
| | - M Fujimoto
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan
| | - M Hosaka
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China
| | - M Katoh
- Institute for Molecular Science, Okazaki, 444-8585, Japan
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
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Kaneyasu T, Hikosaka Y, Wada S, Fujimoto M, Ota H, Iwayama H, Katoh M. Time domain double slit interference of electron produced by XUV synchrotron radiation. Sci Rep 2023; 13:6142. [PMID: 37061592 PMCID: PMC10105747 DOI: 10.1038/s41598-023-33039-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/06/2023] [Indexed: 04/17/2023] Open
Abstract
We present a new realization of the time-domain double-slit experiment with photoelectrons, demonstrating that spontaneous radiation from a bunch of relativistic electrons can be used to control the quantum interference of single-particles. The double-slit arrangement is realized by a pair of light wave packets with attosecond-controlled spacing, which is naturally included in the spontaneous radiation from two undulators in series. Photoelectrons emitted from helium atoms are observed in the energy-domain under the condition of detecting them one by one, and the stochastic buildup of the quantum interference pattern on a detector plane is recorded.
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Affiliation(s)
- T Kaneyasu
- SAGA Light Source, Tosu, 841-0005, Japan.
- Institute for Molecular Science, Okazaki, 444-8585, Japan.
| | - Y Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - S Wada
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan
| | - M Fujimoto
- Institute for Molecular Science, Okazaki, 444-8585, Japan
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan
| | - H Ota
- Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - H Iwayama
- Institute for Molecular Science, Okazaki, 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan
| | - M Katoh
- Institute for Molecular Science, Okazaki, 444-8585, Japan
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
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Fujii T, Shimizu T, Kaji Y, Katoh M, Sakai H. Activation of mouse Otop3 proton channels by Zn2+. Biochem Biophys Res Commun 2023; 658:55-61. [PMID: 37023615 DOI: 10.1016/j.bbrc.2023.03.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Otopetrins (Otop1-Otop3) belong to a newly identified family of proton (H+) channels activated by extracellular acidification. Here, we found that Zn2+ activates the mouse Otop3 (mOtop3) proton channels by using electrophysiological patch-clamp techniques. In mOtop3-expressing human embryonic kidney HEK293T cells, a biphasic inward mOtop3 H+ current comprising a fast transient current followed by a sustained current was observed upon extracellular acidification at pH 5.0. No significant activation of the mOtop3 channel was observed at pH 6.5 and 7.4, but interestingly, Zn2+ dose-dependently induced a sustained activation of mOtop3 under these pH conditions. Increasing the Zn2+ concentration had no effect on the reversal potential of the channel currents, suggesting that Zn2+ does not permeate through the mOtop3. The activation of the mOtop3 channel was specific to Zn2+ among divalent metal cations. Our findings reveal a novel modulatory mechanism of mOtop3 proton channels by Zn2+.
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Kaneyasu T, Hosaka M, Mano A, Takashima Y, Fujimoto M, Salehi E, Iwayama H, Hikosaka Y, Katoh M. Double-pulsed wave packets in spontaneous radiation from a tandem undulator. Sci Rep 2022; 12:9682. [PMID: 35690656 PMCID: PMC9188554 DOI: 10.1038/s41598-022-13684-2] [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: 02/11/2022] [Accepted: 05/26/2022] [Indexed: 11/17/2022] Open
Abstract
We verify that each wave packet of spontaneous radiation from two undulators placed in series has a double-pulsed temporal profile with pulse spacing which can be controlled at the attosecond level. Using a Mach–Zehnder interferometer operating at ultraviolet wavelengths, we obtain the autocorrelation trace for the spontaneous radiation from the tandem undulator. The results clearly show that the wave packet has a double-pulsed structure, consisting of a pair of 10-cycle oscillations with a variable separation. We also report the characterization of the time delay between the double-pulsed components in different wavelength regimes. The excellent agreement between the independent measurements confirms that a tandem undulator can be used to produce double-pulsed wave packets at arbitrary wavelength.
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Affiliation(s)
- T Kaneyasu
- SAGA Light Source, Tosu, 841-0005, Japan.
| | - M Hosaka
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan.,National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China
| | - A Mano
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan
| | - Y Takashima
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan
| | - M Fujimoto
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan.,Institute for Molecular Science, Okazaki, 444-8585, Japan.,Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan
| | - E Salehi
- Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - H Iwayama
- Institute for Molecular Science, Okazaki, 444-8585, Japan.,Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan
| | - Y Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - M Katoh
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603, Japan.,Institute for Molecular Science, Okazaki, 444-8585, Japan.,Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
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Fujii T, Katoh M, Ootsubo M, Nguyen OTT, Iguchi M, Shimizu T, Tabuchi Y, Shimizu Y, Takeshima H, Sakai H. Cardiac glycosides stimulate endocytosis of GLUT1 via intracellular Na + ,K + -ATPase α3-isoform in human cancer cells. J Cell Physiol 2022; 237:2980-2991. [PMID: 35511727 DOI: 10.1002/jcp.30762] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/23/2022] [Accepted: 04/11/2022] [Indexed: 01/20/2023]
Abstract
Glucose transporter GLUT1 plays a primary role in the glucose metabolism of cancer cells. Here, we found that cardiac glycosides (CGs) such as ouabain, oleandrin, and digoxin, which are Na+ ,K+ -ATPase inhibitors, decreased the GLUT1 expression in the plasma membrane of human cancer cells (liver cancer HepG2, colon cancer HT-29, gastric cancer MKN45, and oral cancer KB cells). The effective concentration of ouabain was lower than that for inhibiting the activity of Na+ ,K+ -ATPase α1-isoform (α1NaK) in the plasma membrane. The CGs also inhibited [3 H]2-deoxy- d-glucose uptake, lactate secretion, and proliferation of the cancer cells. In intracellular vesicles of human cancer cells, Na+ ,K+ -ATPase α3-isoform (α3NaK) is abnormally expressed. Here, a low concentration of ouabain inhibited the activity of α3NaK. Knockdown of α3NaK significantly inhibited the ouabain-decreased GLUT1 expression in HepG2 cells, while the α1NaK knockdown did not. Consistent with the results in human cancer cells, CGs had no effect on GLUT1 expression in rat liver cancer dRLh-84 cells where α3NaK was not endogenously expressed. Interestingly, CGs decreased GLUT expression in the dRLh-84 cells exogenously expressing α3NaK. In HepG2 cells, α3NaK was found to be colocalized with TPC1, a Ca2+ -releasing channel activated by nicotinic acid adenine dinucleotide phosphate (NAADP). The CGs-decreased GLUT1 expression was significantly inhibited by a Ca2+ chelator, a Ca2+ -ATPase inhibitor, and a NAADP antagonist. The GLUT1 decrease was also attenuated by inhibitors of dynamin and phosphatidylinositol-3 kinases (PI3Ks). In conclusion, the binding of CGs to intracellular α3NaK elicits the NAADP-mediated Ca2+ mobilization followed by the dynamin-dependent GLUT1 endocytosis in human cancer cells.
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Affiliation(s)
- Takuto Fujii
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Mizuki Katoh
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Manami Ootsubo
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Oanh T T Nguyen
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Mayumi Iguchi
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Takahiro Shimizu
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama, Japan
| | - Yasuharu Shimizu
- Tokyo Research Center, Kyushin Pharmaceutical Co, Ltd., Tokyo, Japan
| | - Hiroshi Takeshima
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Hideki Sakai
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
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Fujii T, Shimizu T, Katoh M, Nagamori S, Koizumi K, Fukuoka J, Tabuchi Y, Sawaguchi A, Okumura T, Shibuya K, Fujii T, Takeshima H, Sakai H. Survival of detached cancer cells is regulated by movement of intracellular Na +,K +-ATPase. iScience 2021; 24:102412. [PMID: 33997694 PMCID: PMC8099779 DOI: 10.1016/j.isci.2021.102412] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 02/28/2021] [Accepted: 04/06/2021] [Indexed: 11/21/2022] Open
Abstract
Beginning of metastasis, cancer cells detach from the primary tumor and they can survive even under loss of anchorage; however, the detachment-elicited mechanisms have remained unknown. Here, we found that Na+,K+-ATPase α3-isoform (α3NaK) in human cancer cells is dynamically translocated from intracellular vesicles to the plasma membrane when the attached cells are detached and that this mechanism contributes to the survival of the detached (floating) cancer cells. α3NaK was detected in the plasma membrane of floating cancer cells in peritoneal fluids of patients, while it was in the cytoplasm of the cells in primary tumor tissues. On cancer cell detachment, we also found the focal-adhesion-kinase-dependent Ca2+ response that induces the α3NaK translocation via nicotinic acid adenine dinucleotide phosphate pathway. Activation of AMP-activated protein kinase was associated with the translocated α3NaK in the plasma membrane. Collectively, our study identifies a unique mechanism for survival of detached cancer cells, opening up new opportunities for development of cancer medicines. Na+,K+-ATPase α3-isoform (α3NaK) is localized in cytoplasm of attached cancer cells Intracellular α3NaK is moved to plasma membrane (PM) upon the cell detachment FAK and NAADP-dependent Ca2+ response is involved in the translocation of α3NaK Activation of AMPK associated with the PM-α3NaK contributes to the cell survival
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Affiliation(s)
- Takuto Fujii
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Takahiro Shimizu
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Mizuki Katoh
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Shushi Nagamori
- Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Keiichi Koizumi
- Laboratory of Drug Discovery and Development for Pre-disease, Section of Host Defences, Division of Bioscience, Institute of Natural Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Junya Fukuoka
- Laboratory of Pathology, Toyama University Hospital, Toyama 930-0194, Japan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama 930-0194, Japan
| | - Akira Sawaguchi
- Department of Anatomy, Ultrastructural Cell Biology, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Tomoyuki Okumura
- Department of Surgery and Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Kazuto Shibuya
- Department of Surgery and Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Tsutomu Fujii
- Department of Surgery and Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Hiroshi Takeshima
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Hideki Sakai
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
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Kaneyasu T, Hikosaka Y, Fujimoto M, Iwayama H, Katoh M. Electron Wave Packet Interference in Atomic Inner-Shell Excitation. Phys Rev Lett 2021; 126:113202. [PMID: 33798343 DOI: 10.1103/physrevlett.126.113202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
We report the observation of quantum interference between electron wave packets launched from the inner-shell 4d orbital of the Xe atom. Using pairs of femtosecond radiation wave packets from a synchrotron light source, we obtain time-domain interferograms for the inner-shell excitations. This approach enables the experimental verification and control of the quantum interference between the electron wave packets. Furthermore, the femtosecond Auger decay of the inner-shell excited state is tracked. To the best of our knowledge, this is the first observation of wave packet interference in an atomic inner-shell process, and also the first time-resolved experiment on few-femtosecond Auger decay using a synchrotron light source.
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Affiliation(s)
- T Kaneyasu
- SAGA Light Source, Tosu 841-0005, Japan
- Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Y Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
| | - M Fujimoto
- Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
| | - H Iwayama
- Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
| | - M Katoh
- Institute for Molecular Science, Okazaki 444-8585, Japan
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
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Katoh M, Katoh M. Infigratinib. Fibroblast growth factor receptor (FGFR) 1-3 inhibitor, Treatment of cholangiocarcinoma, Treatment of urothelial carcinoma. DRUG FUTURE 2020. [DOI: 10.1358/dof.2020.45.1.3000875] [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: 10/25/2022]
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Kaneyasu T, Hikosaka Y, Fujimoto M, Iwayama H, Katoh M. Controlling the Orbital Alignment in Atoms Using Cross-Circularly Polarized Extreme Ultraviolet Wave Packets. Phys Rev Lett 2019; 123:233401. [PMID: 31868498 DOI: 10.1103/physrevlett.123.233401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/26/2019] [Indexed: 06/10/2023]
Abstract
We report on the use of pairs of 10-cycle extreme ultraviolet wave packets with attosecond-controlled spacing emitted by individual relativistic electrons within an electron bunch passing through a tandem undulator. Based on the temporal coherent control technique with circular polarization, we succeeded in controlling the excited state alignment in the photoexcitation of helium atoms, which we verified through the observation of oscillation in fluorescence yield depending on the attosecond-controlled delay time. Our work demonstrates the potential of undulator radiation for the generation of longitudinally coherent wave packets suitable for attosecond coherent control, an application which has hitherto been hidden in the incoherent nature of the radiation pulse emitted by a bunch of electrons.
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Affiliation(s)
- T Kaneyasu
- SAGA Light Source, Tosu 841-0005, Japan
- Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Y Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
| | - M Fujimoto
- Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
| | - H Iwayama
- Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
| | - M Katoh
- Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
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Hikosaka Y, Kaneyasu T, Fujimoto M, Iwayama H, Katoh M. Coherent control in the extreme ultraviolet and attosecond regime by synchrotron radiation. Nat Commun 2019; 10:4988. [PMID: 31676792 PMCID: PMC6825198 DOI: 10.1038/s41467-019-12978-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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: 05/10/2019] [Accepted: 10/09/2019] [Indexed: 11/10/2022] Open
Abstract
Quantum manipulation of populations and pathways in matter by light pulses, so-called coherent control, is currently one of the hottest research areas in optical physics and photochemistry. The forefront of coherent control research is moving rapidly into the regime of extreme ultraviolet wavelength and attosecond temporal resolution. This advance has been enabled by the development of high harmonic generation light sources driven by intense femtosecond laser pulses and by the advent of seeded free electron laser sources. Synchrotron radiation, which is usually illustrated as being of poor temporal coherence, hitherto has not been considered as a tool for coherent control. Here we show an approach based on synchrotron radiation to study coherent control in the extreme ultraviolet and attosecond regime. We demonstrate this capability by achieving wave-packet interferometry on Rydberg wave packets generated in helium atoms. Synchrotron light sources have wide range of tunable parameters like frequency, intensity. Here the authors demonstrate quantum control of Rydberg states of helium using delay controlled XUV wavepackets generated from synchrotron radiation.
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Affiliation(s)
- Y Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama, 930-0194, Japan.
| | - T Kaneyasu
- SAGA Light Source, Tosu, 841-0005, Japan.,Institute for Molecular Science, Okazaki, 444-8585, Japan
| | - M Fujimoto
- Institute for Molecular Science, Okazaki, 444-8585, Japan.,Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan
| | - H Iwayama
- Institute for Molecular Science, Okazaki, 444-8585, Japan.,Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan
| | - M Katoh
- Institute for Molecular Science, Okazaki, 444-8585, Japan.,Sokendai (The Graduate University for Advanced Studies), Okazaki, 444-8585, Japan.,Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
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13
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Nancekievill M, Jones AR, Joyce MJ, Lennox B, Watson S, Katakura J, Okumura K, Kamada S, Katoh M, Nishimura K. A Remote-operated System to Map Radiation Dose in the Fukushima Daiichi Primary Containment Vessel. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201817006004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This paper describes the development of a submersible system based on a remote-operated vehicle coupled with radiation detectors to map the interior of the reactors at the Fukushima Daiichi nuclear power station. It has the aim oflocating fuel debris. The AVEXIS submersible vehicle used in this study has been designed as a low-cost, potentially disposable, inspection platform that is the smallest of its class and is capable of being deployed through a 150 mm diameter access pipe. To map the gamma-ray environment, a cerium bromide scintillator detector with a small form factor has been incorporated into the AVEXIS to identify radioactive isotopes via gamma-ray spectroscopy. This provides the combined system with the potential to map gamma-ray spectra and particle locations throughout submerged, contaminated facilities, such as Units 1, 2 and 3 of the Fukushima Daiichi nuclear power plant. The hypothesis of this research is to determine the sensitivity of the combined system in a submerged environment that replicates the combination of gamma radiation and water submersion but at lower dose rates.
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14
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Guelker JE, Rock T, Ott R, Katoh M, Kroeger K, Guelker R, Klues HG, Shin DI, Bufe A. Acute outcome of chronic total occlusion (CTO) recanalizsation in the elderly. Med J Malaysia 2017; 72:236-240. [PMID: 28889135] [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: 06/07/2023]
Abstract
OBJECTIVES Percutaneous coronary intervention (PCI) of total chronic total occlusion (CTO) still remains a major challenge in interventional cardiology. There is only insignificant knowledge reported in the literature about age differences in CTO recanalization. We analyzed in this study the issue of the impact of age on procedural characteristics, complications and short-term outcome. METHODS Between 2012-2016 we included 440 patients. They underwent PCI for at least one CTO. Antegrade and retrograde CTO techniques were applied. The retrograde approach was used only after failed antegrade intervention. Continuous data are presented as the mean ± standard deviation; categorical data are presented as numbers and percentages unless otherwise specified. We used Twosamplet- t-test with equal variance to test the significant differences of the variables between the two cohorts. RESULTS Procedural success proved independently of age. There was no significant interaction between age and procedural success (p=0.5). Complication rates were low in both groups (2.7% vs. 4%; p=0,4) with no difference in statistical significance. CONCLUSIONS Our study suggests that in an aging society patients with severe coronary artery disease and chronical total occlusions an interventional therapy should be used more intensively. It can be performed safe and feasible.
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Affiliation(s)
- J E Guelker
- Helios Clinic Krefeld, Department of Cardiology, Heartcentre Niederrhein, Germany.
| | - T Rock
- Helios Clinic Krefeld, Department of Cardiology, Heartcentre Niederrhein, Germany
| | - R Ott
- Helios Clinic Krefeld, Department of Cardiology, Heartcentre Niederrhein, Germany
| | - M Katoh
- Helios Clinic Krefeld, Department of Diagnostic and Interventional Radiology, Germany
| | - K Kroeger
- Helios Clinic Krefeld, Department of Vascular Medicine, Germany
| | - R Guelker
- RWI - Leibniz-Institute for Economic Research, Essen, Germany
| | - H G Klues
- Helios Clinic Krefeld, Department of Cardiology, Heartcentre Niederrhein, Germany
| | - D I Shin
- Helios Clinic Krefeld, Department of Cardiology, Heartcentre Niederrhein, Germany
| | - A Bufe
- Helios Clinic Krefeld, Department of Cardiology, Heartcentre Niederrhein, Germany
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15
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Koyama K, Takeda N, Abe H, Semba H, Soma K, Wake M, Katoh M, Nakagama Y, Isagawa T, Komuro I. 5043Unbiased shRNA screening identifies that lactic acid promotes cardiac fibroblast activation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5043] [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: 11/14/2022] Open
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16
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Ströder J, Bomberg H, Wagenpfeil S, Bücker A, Schäfers H, Katoh M, Groesdonk H, Minko P. Presepsin und Entzündungswerte korrelieren mit dem Auftreten und dem Schweregrad der Nicht-Okklusiven-Mesenterialen Ischämie (NOMI) nach kardiovaskulären Operationen. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1601390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- J Ströder
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Klinik für Diagnostische und Interventionelle Radiologie, Homburg
| | - H Bomberg
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Homburg
| | - S Wagenpfeil
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Institut für Medizinische Biometrie, Epidemiologie und Medizinische Informatik, Homburg
| | - A Bücker
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Klinik für Diagnostische und Interventionelle Radiologie, Homburg
| | - H Schäfers
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Thorax- und Herz-Gefäß-Chirurgie, Homburg
| | - M Katoh
- Helios Klinikum Krefeld, Klinik für Diagnostische und Interventionelle Radiologie, Krefeld
| | - H Groesdonk
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie
| | - P Minko
- Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Klinik für Diagnostische und Interventionelle Radiologie, Homburg
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17
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Katoh M, Fujimoto M, Kawaguchi H, Tsuchiya K, Ohmi K, Kaneyasu T, Taira Y, Hosaka M, Mochihashi A, Takashima Y. Angular Momentum of Twisted Radiation from an Electron in Spiral Motion. Phys Rev Lett 2017; 118:094801. [PMID: 28306317 DOI: 10.1103/physrevlett.118.094801] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Indexed: 06/06/2023]
Abstract
We theoretically demonstrate for the first time that a single free electron in circular or spiral motion emits twisted photons carrying well-defined orbital angular momentum along the axis of the electron circulation, in adding to spin angular momentum. We show that, when the electron velocity is relativistic, the radiation field contains harmonic components and the photons of lth harmonic carry lℏ total angular momentum for each. This work indicates that twisted photons are naturally emitted by free electrons and are more ubiquitous in laboratories and in nature than ever thought.
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Affiliation(s)
- M Katoh
- Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
- Sokendai (the Graduated University for Advanced Studies), Okazaki 444-8585, Japan
| | - M Fujimoto
- Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
- Sokendai (the Graduated University for Advanced Studies), Okazaki 444-8585, Japan
| | - H Kawaguchi
- Muroran Institute of Technology, Muroran 050-0071, Japan
| | - K Tsuchiya
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - K Ohmi
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | | | - Y Taira
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan
| | - M Hosaka
- Nagoya University, Nagoya 464-0814, Japan
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18
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Höink AJ, Katoh M, Wullstein C. Das Bouveret-Syndrom: Eine ungewöhnliche Form des Gallensteinileus mit eindeutigen Befunden in der diagnostischen Bildgebung. ROFO-FORTSCHR RONTG 2016; 188:1067-1068. [PMID: 27433970 DOI: 10.1055/s-0042-110854] [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: 10/21/2022]
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Affiliation(s)
- K. Ashida
- Market Research & Development Laboratories Mitsubishi Chemical Industries Ltd. 1000 Kamoshida-cho, Midori-ku, Yokohama, Japan
| | - F. Yamauchi
- Market Research & Development Laboratories Mitsubishi Chemical Industries Ltd. 1000 Kamoshida-cho, Midori-ku, Yokohama, Japan
| | - M. Katoh
- Market Research & Development Laboratories Mitsubishi Chemical Industries Ltd. 1000 Kamoshida-cho, Midori-ku, Yokohama, Japan
| | - T. Harada
- Market Research & Development Laboratories Mitsubishi Chemical Industries Ltd. 1000 Kamoshida-cho, Midori-ku, Yokohama, Japan
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20
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Katoh M. Komplikationsmanagement arterieller Interventionen. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581515] [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: 10/22/2022]
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21
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Koyama S, Tanabe S, Saitoh E, Hirano S, Shimizu Y, Katoh M, Uno A, Takemitsu T. Characterization of unexpected postural changes during robot-assisted gait training in paraplegic patients. Spinal Cord 2015; 54:120-5. [PMID: 26261073 DOI: 10.1038/sc.2015.138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/03/2015] [Accepted: 06/22/2015] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN This is a retrospective study. OBJECTIVES The objectives of this study were to categorize unexpected postural changes (UPCs) during gait training in paraplegic patients with wearable gait-assist robots, to reveal the incidence of the UPC and its time-dependent changes during initial gait training period and to investigate neurological level-specific differences. SETTING This study was conducted in Fujita Health University, Aichi, Japan. METHODS We investigated five patients (46.2±14.6 years; lesion level: T6:3, T12:2). All patients had previously achieved gait with wearable robot and walker at supervision level. The UPCs were counted for 2 years and classified according to their type. The time-course data were calculated from the incidence of UPCs for 10 days from initial gait training with the walker. The neurological level-specific differences were investigated between T6 and T12 injuries. RESULTS Eighty-five UPCs were observed and classified into three categories: anterior breakdown, posterior breakdown (PBD) and mal-timing. The average rate over the entire period was 0.96±0.62 (incidents/h/subject). PBD, which was defined as hyperflexion of both hip joints, occurred with the highest frequency (0.64±0.64 incidents/h/subject). During initial gait training, there was a gradual decrease in the occurrence of UPC. For neurological level-specific differences, UPCs were observed more frequently in T6 injuries (1.36±0.35 incidents/h/subject) compared with T12 injuries (0.36±0.31 incidents/h/subject). CONCLUSION PBDs might be the result of near collisions between the trunk of the user and the walker, which make it difficult for the users to move their trunk over an anterior stance limb. Training that is focused upon well-timed forward movements of the walker might be required to avoid the occurrence of this common UPC.
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Affiliation(s)
- S Koyama
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Toyoake, Japan.,Department of Rehabilitation, Kawamura Hospital, Gifu, Japan
| | - S Tanabe
- Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, Toyoake, Japan
| | - E Saitoh
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Toyoake, Japan
| | - S Hirano
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Toyoake, Japan
| | - Y Shimizu
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Toyoake, Japan
| | - M Katoh
- Department of Rehabilitation, Fujita Health University Hospital, Toyoake, Japan
| | - A Uno
- Tomei Brace Company, Seto, Japan
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22
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Katoh M. Komplikationsmanagement arterieller Interventionen. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551090] [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: 10/23/2022]
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23
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Katoh M. Materialkunde II: Ballonkatheter, Stents & Endoprothesen. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551017] [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: 10/23/2022]
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24
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Shimoda M, Kubota K, Shimizu T, Katoh M. Randomized clinical trial of adjuvant chemotherapy with S-1 versus gemcitabine after pancreatic cancer resection. Br J Surg 2015; 102:746-54. [PMID: 25833230 DOI: 10.1002/bjs.9775] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 11/21/2014] [Accepted: 12/16/2014] [Indexed: 12/23/2022]
Abstract
BACKGROUND Randomized studies of adjuvant chemotherapy using gemcitabine suggest a survival benefit after resection of pancreatic cancer. S-1 has also been shown to prolong survival in patients with unresectable pancreatic cancer. This study compared the effects of adjuvant chemotherapy with S-1 or gemcitabine after resection of pancreatic cancer in a randomized trial. METHODS Patients who had undergone resection of pancreatic cancer were registered in this randomized clinical trial. The primary endpoint was disease-free survival (DFS). Expression levels of thymidylate synthase (TS) and dihydropyrimidine dehydrogenase (DPD) mRNAs in cancer tissues were measured as indicators of fluoropyrimidine sensitivity. RESULTS Of 57 patients registered, 29 were allocated to the S-1 group and 28 to gemcitabine. DFS tended to be better with S-1 (median 14·6 (90 per cent c.i. 8·8 to 28·4) months versus 10·5 (7·0 to 28·4) months in the gemcitabine group; P = 0·188), with a similar pattern for overall survival: 21·5 (95 per cent c.i. 14·4 to 42·3) and 18·0 (13·3 to 42·8) months respectively (P = 0·293). When patients were divided into subgroups based on high or low DPD and TS expression, those with a DPD level below the median of 0·88 or a TS level of at least 2·00 had a significant prolongation of DFS after S-1 treatment compared with gemcitabine (P = 0·008 and P = 0·035 respectively). CONCLUSION Overall, S-1 did not improve DFS compared with gemcitabine after pancreatic cancer resection, but there seemed to be a DFS advantage in patients with low expression of DPD or high expression of TS. Reference number: UMIN000009118 (http://www.umin.ac.jp/ctr/).
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Affiliation(s)
- M Shimoda
- Second Department of Surgery, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan
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25
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Luther B, Meyer F, Mamopoulos A, Zapenko A, Doerbecker R, Wullstein C, Kroeger K, Katoh M. [Options and Limitations in Endovascular Therapy for Acute and Chronic Mesenteric Arterial Occlusions]. Zentralbl Chir 2014; 140:486-92. [PMID: 25401371 DOI: 10.1055/s-0034-1383234] [Citation(s) in RCA: 2] [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: 12/13/2022]
Abstract
BACKGROUND The significance of endovascular therapy for mesenteric ischaemia (MI) is being debated. Despite initially lower mortality and morbidity, inconsistent early and late results led to questions concerning indications and technical applications of the procedure. METHODS 91 patients with MI underwent endovascular treatment in a period of 11 years. In 78 (85.7 %) patients a stent was deployed and in 13 (14.3 %) an angioplasty was performed, principally of the superior mesenteric artery (n = 81/91, 89 %). Follow-up consisted of a clinical and an ultrasound examination in all cases. Mean follow-up was 4.2 years. Our results were compared to those in the literature. RESULTS Endovascular treatment of the intestinal arteries accounted for 0.6 % of all vascular procedures. Seven of 91 patients (7.7 %) died after an initial PTA/stenting. The overall peri-interventional morbidity was 6.6 % (n = 6/91). Medium- to long-term complications were encountered in 20 patients (22 %), primarily during the first year (85 %). Six of 91 patients developed an in-stent stenosis (6.6 %) and 14/91 patients (15.4 %) stent occlusion. Additionally 2 dislocated stents (2.2 %) and an arterial perforation with bleeding into the mesentery (1.1 %) were seen. Although 3 of these 20 patients were successfully treated with an additional PTA or stenting (15.0 %; n = 3/91, 3.3 %), surgical conversion was necessary in 9 (n = 9/20, 45 %; n = 9/91, 9.9 %). The postoperative mortality was respectively 22.2 % (n = 2/9; n = 2/91, 2.2 %). In the case of acute MI, endovascular procedures are only indicated for patients without peritonitis. In chronic MI, the indication for endovascular treatment depends on the type of occlusion and the vascular anatomy. Despite favourable early results, the outcome of endovascular treatment deteriorates with time reaching a 1-year patency rate of 63 % in a multicentre analysis. This leads to secondary procedures in 30 %. A surgical conversion carries a high mortality. CONCLUSION The endovascular treatment of intestinal artery disease cannot be considered the treatment of choice, it is rather an alternative method in patients with functional or local contraindications to surgery. Life-long follow-up is necessary to prevent stent complications with fatal consequences. A prospective randomised study concerning the evaluation of the advantages and disadvantages of surgical and endovascular therapy of intestinal artery occlusive disease is required.
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Affiliation(s)
- B Luther
- Gefäßmedizin, Helios-Klinik, Krefeld, Deutschland
| | - F Meyer
- Klinik für Allgemein-, Viszeral- & Gefäßchirurgie, Universitätsklinikum Magdeburg A. ö. R., Deutschland
| | - A Mamopoulos
- Gefäßmedizin, Helios-Klinik, Krefeld, Deutschland
| | - A Zapenko
- Gefäßmedizin, Helios-Klinik, Krefeld, Deutschland
| | | | - C Wullstein
- Allgemein- & Viszeralchirurgie, Helios-Klinik, Krefeld, Deutschland
| | - K Kroeger
- Gefäßmedizin, Helios-Klinik, Krefeld, Deutschland
| | - M Katoh
- Radiologie, Helios-Klinik, Krefeld, Deutschland
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Roussel E, Evain C, Szwaj C, Bielawski S, Raasch J, Thoma P, Scheuring A, Hofherr M, Ilin K, Wünsch S, Siegel M, Hosaka M, Yamamoto N, Takashima Y, Zen H, Konomi T, Adachi M, Kimura S, Katoh M. Microbunching instability in relativistic electron bunches: direct observations of the microstructures using ultrafast YBCO detectors. Phys Rev Lett 2014; 113:094801. [PMID: 25215987 DOI: 10.1103/physrevlett.113.094801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Indexed: 06/03/2023]
Abstract
Relativistic electron bunches circulating in accelerators are subjected to a dynamical instability leading to microstructures at millimeter to centimeter scale. Although this is a well-known fact, direct experimental observations of the structures, or the field that they emit, remained up to now an open problem. Here, we report the direct, shot-by-shot, time-resolved recording of the shapes (including envelope and carrier) of the pulses of coherent synchrotron radiation that are emitted, and that are a "signature" of the electron bunch microstructure. The experiments are performed on the UVSOR-III storage ring, using electrical field sensitive YBa2Cu3O(7-x) thin-film ultrafast detectors. The observed patterns are subjected to permanent drifts, that can be explained from a reasoning in phase space, using macroparticle simulations.
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Affiliation(s)
- E Roussel
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - C Evain
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - C Szwaj
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - S Bielawski
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - J Raasch
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - P Thoma
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - A Scheuring
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - M Hofherr
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - K Ilin
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - S Wünsch
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - M Siegel
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - M Hosaka
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - N Yamamoto
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Y Takashima
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - H Zen
- Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan
| | - T Konomi
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - M Adachi
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - S Kimura
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - M Katoh
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
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Minko P, Buecker A, Jaeger S, Katoh M. Three-year results after directional atherectomy of calcified stenotic lesions of the superficial femoral artery. Cardiovasc Intervent Radiol 2014; 37:1165-70. [PMID: 24798131 DOI: 10.1007/s00270-014-0884-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 02/23/2014] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the 3-year outcome of patients with peripheral arterial disease (PAD) and heavily calcified stenotic lesions of the superficial femoral artery after directional atherectomy. MATERIALS AND METHODS Fifty-three patients (mean age 67 ± 10 years; 18 females, 35 males, TASC B and C, mean lesion length 7.9 ± 3.5 cm) with PAD (Rutherford 2-6) were enrolled into this prospective monocentric study. In total, 59 calcified lesions of the superficial femoral artery were treated with the Silverhawk atherectomy device (Covidien, Plymouth, MN, USA). Patients were followed-up for 36 months with a 6-month interval to perform clinical re-evaluation, including measurement of maximum walking distance and ankle-brachial index (ABI) as well as duplex-sonography. RESULTS The primary success rate of the procedure was 92 %. In five cases (8 %), additional balloon-PTA and/or stent-PTA was necessary. Procedure-related embolization occurred in seven cases (12 %), which were all successfully treated by aspiration. The primary patency rate after 3 years was 55 %. Median Rutherford score decreased significantly from 5 to 0 after 36 months (p < 0.001). At the same time, the ABI increased from 0.65 to 1.12 (not significant). The limb-salvage rate after 3 years was 87 %. CONCLUSION In this subgroup of patients with POD and calcified stenotic lesions, atherectomy was successfully applied to decrease the plaque burden. Results after 3 years showed a significant decrease of Rutherford score with persistent improvement of ABI and reasonable patency rate.
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Affiliation(s)
- P Minko
- Department of Diagnostic and Interventional Radiology, University Hospital Saarland Homburg, Kirrberger Straße, 66421, Homburg/Saar, Germany,
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Luther B, von Lilien-Waldau V, Mamopoulos A, Katoh M, Friedrich M, Weinknecht S, Lent V. [Ureteroarterial fistula - pathogenesis, diagnostics, and therapeutic outcome]. Aktuelle Urol 2014; 45:204-8. [PMID: 24902070 DOI: 10.1055/s-0034-1376953] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Although ureteroarterial fistulas are rare, they result in a high mortality because of the massive urogenital haemorrhage. The diagnosis is often difficult even when invasive measures are applied. Including the ureteroarterial fistula in the diagnostic process in cases of macrohaematuria with a positive medical history can be helpful. A ureteroarterial fistula typically develops in pa-tients who have undergone pelvic surgery and radiation as well as after long-term ureteral stents. Patients are usually multimorbid. The treatment of choice consists of fistula exclusion by stent graft deployment in the iliac artery and application of a ureteral stent or a ureterostomy. The significance of surgical treatment is diminishing. The long-term results of endovascular treatment, however, are inconsistent because of stent infections and recurrent bleeding. Therefore, close patient surveillance and cooperation among the treating specialists is necessary.·
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Affiliation(s)
- B. Luther
- Klinik für Gefäßmedizin, Gefäßchirurgie, Helios-Klinikum Krefeld
| | | | - A. Mamopoulos
- Klinik für Gefäßmedizin, Gefäßchirurgie, Helios-Klinikum Krefeld
| | - M. Katoh
- Institut für Diagnostische und Interventionelle Radiologie, Helios-Klinikum Krefeld
| | - M. Friedrich
- Klinik für Urologie und Kinderurologie, Helios-Klinikum Krefeld
| | - S. Weinknecht
- Klinik für Urologie und Kinderurologie, Helios-Klinikum Krefeld
| | - V. Lent
- Ärztekammer Nordrhein, Düsseldorf
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Minko P, Massmann A, Obst-Gleditsch K, Bücker A, Katoh M. [Recanalization of thrombosis of the superior vena cava via an Aspirex catheter]. Radiologe 2013; 53:1115-1117. [PMID: 24482810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Minko P, Massmann A, Obst-Gleditsch K, Bücker A, Katoh M. [Recanalization of thrombosis of the superior vena cava using an Aspirex catheter.]. Radiologe 2013; 53:1115-1117. [PMID: 24233403 DOI: 10.1007/s00117-013-2587-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- P Minko
- Klinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum des Saarlandes, Kirrberger Straße, 66421, Homburg/Saar, Deutschland,
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Ohigashi T, Arai H, Araki T, Kondo N, Shigemasa E, Ito A, Kosugi N, Katoh M. Construction of the Scanning Transmission X-ray Microscope Beamline at UVSOR. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/463/1/012006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
A 30-year-old man presented with micturition pain and was diagnosed with a submucosal tumor in the right wall of the bladder with metastasis to the right obturator lymph node. Transurethral resection led to a diagnosis of invasive malignant pheochromocytoma. Radical cystectomy, neobladder reconstruction and bilateral iliac lymph node dissection were performed. Genetic analysis revealed succinate dehydrogenase B-associated hereditary pheochromocytoma/paraganglioma syndrome. 10 months after the operation, he had no evidence of recurrence.
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Affiliation(s)
- M. Maeda
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y. Funahashi
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M. Katoh
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T. Fujita
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K. Tsuruta
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M. Gotoh
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Taira Y, Toyokawa H, Kuroda R, Yamamoto N, Adachi M, Tanaka S, Katoh M. Photon-induced positron annihilation lifetime spectroscopy using ultrashort laser-Compton-scattered gamma-ray pulses. Rev Sci Instrum 2013; 84:053305. [PMID: 23742543 DOI: 10.1063/1.4807701] [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: 06/02/2023]
Abstract
High-energy ultrashort gamma-ray pulses can be generated via laser Compton scattering with 90° collisions at the UVSOR-II electron storage ring. As an applied study of ultrashort gamma-ray pulses, a new photon-induced positron annihilation lifetime spectroscopy approach has been developed. Ultrashort gamma-ray pulses with a maximum energy of 6.6 MeV and pulse width of 2.2 ps created positrons throughout bulk lead via pair production. Annihilation gamma rays were detected by a BaF2 scintillator mounted on a photomultiplier tube. A positron lifetime spectrum was obtained by measuring the time difference between the RF frequency of the electron storage ring and the detection time of the annihilation gamma rays. We calculated the response of the BaF2 scintillator and the time jitter caused by the variation in the total path length of the ultrashort gamma-ray pulses, annihilation gamma rays, and scintillation light using a Monte Carlo simulation code. The positron lifetime for bulk lead was successfully measured.
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Affiliation(s)
- Y Taira
- Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan.
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Katoh M, Tada M, Sawamura Y, Abe H. Total removal of huge chondrosarcoma of the skull base with facial nerve resection and reconstruction. J Clin Neurosci 2012; 5:342-5. [PMID: 18639046 DOI: 10.1016/s0967-5868(98)90075-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/1996] [Accepted: 10/21/1996] [Indexed: 10/26/2022]
Abstract
Chondrosarcomas of the skull base are locally aggressive tumours, and radical surgical resection is often difficult because of involvement of important neural structures in the skull base. We report the successful total resection of a huge skull base chondrosarcoma extending both intra- and extracranially. The tumour involved the left mastoid process, entire petrous bone, jugular foramen, posterior fossa and the parapharyngeal space. Since the facial nerve in the fallopian canal was totally involved by the tumour, the nerve was sacrificed and reconstructed using a great auricular nerve graft. The removal of the tumour was radical and complete. The functional recovery of the reconstructed facial nerve was excellent. The patient has almost fully recovered from the other neurological symptoms and has been free of tumour recurrence for 4 years after surgery.
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Affiliation(s)
- M Katoh
- Department of Neurosurgery, University of Hokkaido School of Medicine, Sapporo 060, Japan
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Minko P, Groesdonk H, Stroeder J, Miodek J, Graeber S, Bücker A, Schäfers HJ, Katoh M. A scoring system for the assessment of angiographic findings in non-occlusive mesenteric ischemia (NOMI). ROFO-FORTSCHR RONTG 2012; 184:805-9. [PMID: 22618477 DOI: 10.1055/s-0032-1312750] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE To establish a standardized scoring system for angiographic findings in patients with non-occlusive mesenteric ischemia (NOMI). MATERIALS AND METHODS In 36 patients (mean age: 72 years), 53 angiographies of the superior mesenteric artery (SMA) were performed for suspected NOMI after cardiac or major aortic surgery. All examinations were performed using a standardized DSA technique. Two experienced radiologists performed a consensus reading blinded to the clinical information, on two occasions with an interval of two weeks. In order to investigate the reproducibility of the criteria, the images were assessed once by an intensivist and a medical student. Image analysis was performed with respect to vessel morphology, reflux of contrast medium into the aorta, small bowel parenchymal contrast enhancement and distension and the delay between arterial injection and portal vein filling. RESULTS Almost perfect intra-observer correlation was obtained for the assessment of the contrast medium reflux (κ = 0.82) and substantial correlation for the time of portal vein filling (κ = 0.66). Moderate correlations were obtained for the vessel morphology (κ = 0.51), small bowel enhancement (κ = 0.63) and distension (κ = 0.53). Contrast medium reflux into the aorta (κ = 0.77 and 0.63) and the time of portal vein filling (κ = 0.42 and 0.58) resulted in the highest inter-observer correlations between the radiologists and the intensivist as well as the radiologists and the student. CONCLUSION In patients with suspected NOMI, using our scoring system yields high intra- and inter-observer correlations, allowing a standardized evaluation of angiographic findings.
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Affiliation(s)
- P Minko
- Diagnostic and Interventional Radiology, Saarland University Hospital.
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Massmann A, Katoh M, Shayesteh-Kheslat R, Kollmar O, Schneider G, Bücker A. Interventionelles Management symptomatischer zentral-venöser Stenosen mittels Ballondilatation. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311146] [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: 10/28/2022]
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Massmann A, Katoh M, Kunihara T, Seidel R, Fries P, Schneider G, Schäfers HJ, Bücker A. Implantation nicht-ummantelter Stents bei akuter/subakuter komplizierter Typ-B Aortendissektion. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311016] [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: 10/28/2022]
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Katoh M. Rekanalisation. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1310870] [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: 10/28/2022]
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Minko P, Jäger S, Bücker A, Katoh M. Drei Jahres Ergebnisse: Atherektomie verkalkter Gefäßstenosen im Bewegungssegment der unteren Extremitäten. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311071] [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: 10/28/2022]
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Massmann A, Obst-Gleditsch K, Kubale R, Katoh M, Shayesteh-Kheslat R, Schneider G, Bücker A. Aneurysmata der Viszeralarterien: Langzeitergebnisse nach endovaskulärer Behandlung oder Verlaufsbeobachtung. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311187] [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: 10/28/2022]
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Massmann A, Katoh M, Fries P, Schneider G, Bücker A. Interventionelles Management von Komplikationen bei zentral-venösen Portsystemen. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311262] [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: 10/28/2022]
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Katoh M. Schnittbildgesteuerte Biopsien: Aktuelles Material, klinischer Einsatz und Ergebnisse. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1310874] [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: 10/28/2022]
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Minko P, Bücker A, Laschke M, Menger M, Bohle R, Katoh M. Mechanische Thrombektomie mittels des Rotarex-Katheter von Beckenvenenthrombosen in einem Schweinemodell. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311167] [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: 10/28/2022]
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Suzuki Y, Katoh M, Sato J, Morokuma M, Hosoi MA, Ohkubo C. Pressure pain threshold of mucosa after tooth extraction under removable denture bases. Eur J Prosthodont Restor Dent 2011; 19:184-186. [PMID: 22645806] [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: 06/01/2023]
Abstract
This study explored the pressure pain threshold (PPT) of the mucosa after tooth extraction. The PPTs of the wounded mucosa of eight volunteer subjects were observed at 7, 30, and 90 days after tooth extraction. The PPTs at 30 days and 90 days were approximately two and three times higher respectively, than those at 7 days. As time passed, the values for the PPTs after tooth extraction increased in all regions. At 90 days after tooth extraction, the PPTs are about 97% recovered compared to the PPTs of the contralateral points.
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Affiliation(s)
- Y Suzuki
- Division of Oral and Maxillofacial Implantology, Tsurumi University School of Dental Medicine, Tsurumi-ku, Yokohama, Japan.
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Takahashi T, Itoh R, Nishinomiya H, Katoh M, Manabe N. Effect of linoleic acid albumin in a dilution solution and long-term equilibration for freezing of bovine spermatozoa with poor freezability. Reprod Domest Anim 2011; 47:92-7. [PMID: 21635578 DOI: 10.1111/j.1439-0531.2011.01806.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Despite normal eucrasia, mating desire and semen quality, sire bulls sometimes have spermatozoa with poor freezing tolerance. This study assessed effects of the addition of linoleic acid albumin (LAA) and long-term (LT) equilibrium to frozen semen on their sperm freezing tolerance. Immediately after collection using an artificial vagina and a breeding mount, semen was diluted with yolk citrate buffer; then, it was cooled slowly to 4°C during more than 5 h. Equilibrium treatment at 4°C was applied using the same extender supplemented with glycerol. Semen of bull A, with low sperm freezing tolerance, was treated with 1 mg/ml of LAA added to the first extender. The equilibrium treatment at 4°C was prolonged to 30 h. Significantly higher motility rates were obtained for the LT + LAA-treated sperm before and after freezing-thawing. However, for semen of bulls B and C with normal sperm freezing tolerance, the LT + LAA treatment barely exhibited a small effect on the motility rate. Almost no difference was found among bulls A, B and C in the motility rates of LT + LAA-treated sperm after freezing-thawing. No difference of fertility was apparent on LT + LAA-treated frozen sperm in comparison with normal sperm in embryonic collection and in vitro fertilization. It was not an aberration of fertility in vivo or in vitro. In addition, the conception rate of artificial insemination did not have a difference, and a normal calf was obtained. Results show that addition of LAA to an extender for frozen bovine spermatozoa and 30 h of low-temperature equilibrium might improve the motility of freezing-thawing spermatozoa with poor freezability. Sperm exhibited normal fertilization capability and ontogenic capability.
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Affiliation(s)
- T Takahashi
- Akita Prefectural Agriculture, Forestry and Fisheries Research Center, Daisen, Akita, Japan.
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Minko P, Katoh M, Opitz A, Jäger S, Bücker A. Subintimal revascularization of chronic iliac artery occlusions using a reentry-catheter. ROFO-FORTSCHR RONTG 2011; 183:549-53. [PMID: 21567349 DOI: 10.1055/s-0031-1273345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE To demonstrate the value of a Reentry-Catheter for true lumen access after subintimal revascularization of chronic iliac artery occlusions. MATERIALS AND METHODS Subintimal revascularization was performed in 5 patients (mean age: 67 ± 12 years; female: 3, male: 2) with total iliac artery occlusion (TASC B to D), but without gaining access to the true lumen distal to the occlusion. Subsequently, a Reentry-Catheter was used to establish reentry and a new subintimal tract. Patients were followed up after 6, 12 and 24 months for clinical re-evaluation to determine the Rutherford score and the ankle brachial index (ABI). In addition, duplex ultrasound was performed to evaluate vessel patency. RESULTS The primary technical success rate was 100 %. In all cases angioplasty was followed by stent placement to establish the subintimal tract. The mean Rutherford score decreased from 3.6 ± 0.9 to 0.33 ± 0.57 after 24 months, while the ABI increased from 0.67 ± 0.06 to 1.2 ± 0. Vessel patency was observed in all patients available for follow-up examinations. CONCLUSION The Reentry-Catheter reliably allowed access to the true lumen after subintimal revascularization of occluded iliac arteries. Results in this small patient cohort showed a significant reduction in the Rutherford score, increase in the ABI, and a good patency rate after two years.
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Affiliation(s)
- P Minko
- Diagnostic and Interventional Radiology, Saarland University Hospital, 66421 Homburg/Saar, Germany.
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Minko P, Bücker A, Katoh M. Risikofaktoren beim Gebrauch des Angio-Seal Verschlusssystems nach Antegrader Punktion. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Katoh M. Rekanalisationstechniken (Lyse, Thrombektomie, Atherektomie). ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1278938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Minko P, Jäger S, Bücker A, Katoh M. Atherektomie femoropoplitealer Gefäßstenosen: Vergleich der 2 Jahres Ergebnisse von Bewegungs- vs. Nichtbewegungssegmenten. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kazuki Y, Hoshiya H, Takiguchi M, Abe S, Iida Y, Osaki M, Katoh M, Hiratsuka M, Shirayoshi Y, Hiramatsu K, Ueno E, Kajitani N, Yoshino T, Kazuki K, Ishihara C, Takehara S, Tsuji S, Ejima F, Toyoda A, Sakaki Y, Larionov V, Kouprina N, Oshimura M. Refined human artificial chromosome vectors for gene therapy and animal transgenesis. Gene Ther 2010; 18:384-93. [PMID: 21085194 PMCID: PMC3125098 DOI: 10.1038/gt.2010.147] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [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] [Indexed: 12/04/2022]
Abstract
Human artificial chromosomes (HACs) have several advantages as gene therapy vectors, including stable episomal maintenance, and the ability to carry large gene inserts. We previously developed HAC vectors from the normal human chromosomes using a chromosome engineering technique. However, endogenous genes were remained in these HACs, limiting their therapeutic applications. In this study, we refined a HAC vector without endogenous genes from human chromosome 21 in homologous recombination-proficient chicken DT40 cells. The HAC was physically characterized using a transformation-associated recombination (TAR) cloning strategy followed by sequencing of TAR-bacterial artificial chromosome clones. No endogenous genes were remained in the HAC. We demonstrated that any desired gene can be cloned into the HAC using the Cre-loxP system in Chinese hamster ovary cells, or a homologous recombination system in DT40 cells. The HAC can be efficiently transferred to other type of cells including mouse ES cells via microcell-mediated chromosome transfer. The transferred HAC was stably maintained in vitro and in vivo. Furthermore, tumor cells containing a HAC carrying the suicide gene, herpes simplex virus thymidine kinase (HSV-TK), were selectively killed by ganciclovir in vitro and in vivo. Thus, this novel HAC vector may be useful not only for gene and cell therapy, but also for animal transgenesis.
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Affiliation(s)
- Y Kazuki
- Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science, Tottori University, Tottori, Japan
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