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Sekimoto S, Inaba T. Characterization of Meloidogyne enterolobii intercepted from baobab ( Adansonia digitata L.) seedlings from Thailand during Japanese import plant quarantine inspection. Helminthologia 2023; 60:263-271. [PMID: 38152472 PMCID: PMC10750247 DOI: 10.2478/helm-2023-0027] [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: 03/31/2023] [Accepted: 07/07/2023] [Indexed: 12/29/2023] Open
Abstract
In April 2019, baobab (Adansonia digitata L.) seedlings from Thailand, exhibiting galls on the roots, were intercepted during an import plant quarantine inspection at Chubu Centrair International Airport, Japan. Root-knot nematodes (RKNs) were extracted from the galled roots of baobab seedlings and identified by morphological, morphometrical and molecular methods as the guava root-knot nematode, Meloidogyne enterolobii Yang & Eisenback. The morphology and morphometrics of the intercepted population were similar to those of the original and subsequent descriptions of M. enterolobii. The sequences of D2-D3 of 28S rRNA, mtDNA intergenic COII-16S rRNA and COI genes obtained in this study matched well (99-100% similarity) with each of the gene sequences of M. enterolobii deposited in GenBank. Phylogenetic analysis of these genes revealed that the intercepted population clustered with M. enterolobii and clearly differed from other RKN species. To the best of our knowledge, this is the first report of M. enterolobii from baobab.
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Affiliation(s)
- S. Sekimoto
- Research Division, Yokohama Plant Protection Station, Ministry of Agriculture, Forestry and Fisheries (MAFF), Yokohama, Kanagawa231-0801, Japan
| | - T. Inaba
- Chubu Airport Sub-station, Nagoya Plant Protection Station, MAFF, Tokoname, Aichi479-0881, Japan
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2
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Sekimoto S, Murakami Y, Seo Y. Atrial echo beats as a novel mechanism of periodic fluctuation in cycle length of atrial tachycardia. Pacing Clin Electrophysiol 2023; 46:1145-1148. [PMID: 36794306 DOI: 10.1111/pace.14671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/15/2023] [Accepted: 02/06/2023] [Indexed: 02/17/2023]
Abstract
Atrial echo beats due to a dual-atrioventricular nodal pathway are a possible cause of fluctuating tachycardia in cycle length (CL) but have not been reported so far. Here, we present a case of an 82-year-old man with symptomatic atrial tachycardia (AT), which was accompanied by periodic fluctuations in atrial sequence at the coronary sinus. Electrophysiological study (EPS) for atrioventricular conduction and three-dimensional (3D) electro-anatomical mapping system explained that the mechanism of periodic fluctuations was due to atrial echo beats through a dual-atrioventricular nodal pathway.
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Affiliation(s)
- Satoru Sekimoto
- Department of Cardiology, Nagoya City University East Medical Center, Nagoya, Japan
| | - Yoshimasa Murakami
- Department of Cardiology, Nagoya City University East Medical Center, Nagoya, Japan
| | - Yoshihiro Seo
- Department of Cardiology, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
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3
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Yanagisawa S, Suzuki H, Kanzaki Y, Ishikawa S, Kamikubo Y, Okumura S, Kato H, Mizutani Y, Murase Y, Nakasuka K, Warita S, Sekimoto S, Takemoto Y, Takasugi N, Ohguchi S, Senga M, Yokoi K, Shibata R, Inden Y, Murohara T. Efficacy and feasibility of cryoballoon ablation for atrial fibrillation in patients with heart failure: A large-scale multicenter study. J Cardiovasc Electrophysiol 2022; 33:2447-2464. [PMID: 36168875 DOI: 10.1111/jce.15691] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/01/2022] [Accepted: 09/05/2022] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Data are limited regarding outcomes of cryoballoon ablation for atrial fibrillation (AF) in patients with heart failure (HF). This large-scale multicenter study aimed to evaluate the prognosis of patients with HF after cryoballoon ablation for AF. METHODS Among 3655 patients undergoing cryoballoon ablation at 17 institutions, 549 patients (15%) (391 with paroxysmal AF and 158 with persistent AF) diagnosed with HF preoperatively were analyzed. Clinical endpoints were recurrence, mortality, and HF hospitalization after ablation. RESULTS Most patients had a preserved left ventricular ejection fraction (LVEF) ≥ 50%. During a mean follow-up period of 25.7 months, recurrence, all-cause death, and HF hospitalization occurred in 29%, 4.0%, and 4.8%, respectively. Cardiac function on echocardiography and B-type natriuretic peptide (BNP) levels significantly improved postoperatively, and the effect was more pronounced in the nonrecurrence group. Major complications occurred in 33 patients (6.0%), but most complications were phrenic nerve palsy (3.6%). Although death and HF hospitalization occurred more frequently in patients with LVEF ≤ 40% (n = 73) and New York Heart Association (NYHA) class III-IV (n = 19) than other subgroups, the BNP levels, and LVEF significantly improved after ablation in all LVEF and NYHA class subgroups. High BNP levels, NHYA class, CHADS2 score, and structural heart disease, but not postablation recurrence, independently predicted death, and HF hospitalization on multivariate analysis. The patients with tachycardia-induced cardiomyopathy had better recovery of BNP levels and LVEF after ablation than those with structural heart disease. CONCLUSIONS Cryoballoon ablation for AF in HF patients is feasible and leads to significantly improved cardiac function.
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Affiliation(s)
- Satoshi Yanagisawa
- Department of Advanced Cardiovascular Therapeutics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hirohiko Suzuki
- Department of Cardiology, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan
| | - Yasunori Kanzaki
- Department of Cardiology, Ogaki Municipal Hospital, Ogaki, Japan
| | - Shinji Ishikawa
- Department of Cardiology, Cardiovascular Center, Anjo Kosei Hospital, Anjo, Japan
| | - Yosuke Kamikubo
- Department of Cardiology, Toyota Memorial Hospital, Toyota, Japan
| | - Satoshi Okumura
- Department of Cardiology, Konan Kosei Hospital, Konan, Japan
| | - Hiroyuki Kato
- Division of Cardiology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan
| | - Yoshiaki Mizutani
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Japan
| | - Yosuke Murase
- Department of Cardiology, Komaki City Hospital, Komaki, Japan
| | - Kosuke Nakasuka
- Department of Cardiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shunichiro Warita
- Department of Cardiology, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Satoru Sekimoto
- Department of Cardiology, Nagoya City University East Medical Center, Nagoya, Japan
| | - Yoshio Takemoto
- Department of Cardiology, Gifu Prefectural Tajimi Hospital, Tajimi, Japan
| | - Nobuhiro Takasugi
- Division of Cardiovascular Medicine, Gifu University Hospital, Gifu, Japan
| | - Shiou Ohguchi
- Department of Cardiology, Kasugai Municipal Hospital, Kasugai, Japan
| | - Michiharu Senga
- Department of Cardiology, Kuwana City Medical Center, Kuwana, Japan
| | | | - Rei Shibata
- Department of Advanced Cardiovascular Therapeutics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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4
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Tokushige S, Matsuda S, Oyama G, Shimo Y, Umemura A, Sekimoto S, Sasaki T, Inomata-Terada S, Yugeta A, Hamada M, Ugawa Y, Hattori N, Tsuji S, Terao Y. How deep brain stimulation affects saccades in visual scanning in Parkinson's disease patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Sekimoto S, Oyama G, Hatano T, Sasaki F, Nakamura R, Jo T, Shimo Y, Hattori N. The effectiveness of telemedicine system in Parkinson’s disease: A pilot study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2064] [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]
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6
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Sekimoto S, Wakamatsu M, Morino A, Yoshida T, Saeki T, Murakami Y. Early detection of twiddler syndrome due a congestion alert by remote monitoring. Clin Case Rep 2017; 5:950-953. [PMID: 28588846 PMCID: PMC5458031 DOI: 10.1002/ccr3.979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 01/23/2017] [Accepted: 03/27/2017] [Indexed: 11/16/2022] Open
Abstract
There are often false‐positive alerts of thoracic impedance monitoring; however, the “false‐positive alerts” might indicate any clinical problem of patient. In the present case, an alert for a drop in intrathoracic impedance, which generally indicates exacerbation of heart failure, enabled early detection of twiddler syndrome.
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Affiliation(s)
- Satoru Sekimoto
- Division of Cardiology Nagoya City East Medical Center Nagoya Japan
| | - Mai Wakamatsu
- Division of Clinical Engineering Nagoya City East Medical Center Nagoya Japan
| | - Akihiro Morino
- Division of Clinical Engineering Nagoya City East Medical Center Nagoya Japan
| | - Takayuki Yoshida
- Division of Cardiology Nagoya City East Medical Center Nagoya Japan
| | - Tomoaki Saeki
- Division of Cardiology Nagoya City East Medical Center Nagoya Japan
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Tokushige S, Terao Y, Matsuda S, Oyama G, Shimo Y, Umemura A, Sekimoto S, Sasaki T, Inomata-Terada S, Yugeta A, Hamada M, Ugawa Y, Hattori N, Tsuji S. The effect of deep brain stimulation on visual scanning of Parkinson’s disease patients. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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8
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Yashima H, Sekimoto S, Ninomiya K, Kasamatsu Y, Shima T, Takahashi N, Shinohara A, Matsumura H, Satoh D, Iwamoto Y, Hagiwara M, Nishiizumi K, Caffee MW, Shibata S. Measurements of the neutron activation cross sections for Bi and Co at 386 MeV. Radiat Prot Dosimetry 2014; 161:139-143. [PMID: 24368868 DOI: 10.1093/rpd/nct334] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Neutron activation cross sections for Bi and Co at 386 MeV were measured by activation method. A quasi-monoenergetic neutron beam was produced using the (7)Li(p,n) reaction. The energy spectrum of these neutrons has a high-energy peak (386 MeV) and a low-energy tail. Two neutron beams, 0° and 25° from the proton beam axis, were used for sample irradiation, enabling a correction for the contribution of the low-energy neutrons. The neutron-induced activation cross sections were estimated by subtracting the reaction rates of irradiated samples for 25° irradiation from those of 0° irradiation. The measured cross sections were compared with the findings of other studies, evaluated in relation to nuclear data files and the calculated data by Particle and Heavy Ion Transport code System code.
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Affiliation(s)
- H Yashima
- Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan
| | - S Sekimoto
- Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan
| | - K Ninomiya
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Kasamatsu
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Shima
- Research Center for Nuclear Physics, Osaka University, Suita, Osaka 567-0047, Japan
| | - N Takahashi
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - A Shinohara
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Matsumura
- High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - D Satoh
- Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Y Iwamoto
- Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - M Hagiwara
- High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - K Nishiizumi
- Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450, USA
| | - M W Caffee
- Department of Physics, Purdue University, West Lafayette, IN 47907, USA
| | - S Shibata
- Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan
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Ito S, Nakassuka K, Sekimoto S, Miyata K, Inomata M, Yoshida T, Tamai N, Saeki T, Sato K. Provoked coronary spasm at chronic stage predicts cardiovascular events in patients who underwent successful complete coronary revascularization with first-generation drug-eluting stents. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4814] [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: 11/12/2022] Open
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10
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Morimoto K, Ito S, Nakasuka K, Sekimoto S, Miyata K, Inomata M, Yoshida T, Tamai N, Saeki T, Suzuki S, Murakami Y, Sato K, Morino A, Shimizu Y. Acute effect of sodium nitroprusside on microvascular dysfunction in patients who underwent percutaneous coronary intervention for acute ST-segment elevation myocardial infarction. Int Heart J 2013; 53:337-40. [PMID: 23258132 DOI: 10.1536/ihj.53.337] [Citation(s) in RCA: 7] [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] [Indexed: 11/18/2022]
Abstract
Even in the era of thrombus aspiration and distal protection for ST-segment elevation acute myocardial infarction (STEMI), microvascular dysfunction does exist and improvement of microvascular dysfunction can improve the prognosis and/or left ventricular dysfunction. We evaluated the acute effects of nitroprusside (NTP) on coronary microvascular injury that occurred after primary percutaneous coronary intervention (PCI) for STEMI in 18 patients. The final Thrombolysis in Myocardial Infarction trial (TIMI) flow grade after PCI was 3 in 17 patients and 2 in 1 patient. The index of microcirculatory resistance (IMR) was improved significantly from 76 ± 42 to 45 ± 37 (P = 0.0006) by intracoronary NTP administration. IMR improved to the normal range (IMR < 30) in 9 patients (50%). Higher TIMI flow grade and lower IMR at baseline were observed more frequently in patients whose IMR recovered to normal range after NTP administration. NTP improved the microcirculatory dysfunction at the acute phase in patients who underwent PCI for STEMI and had final TIMI 3 flow in almost all cases.
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11
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Delfanazari K, Asai H, Tsujimoto M, Kashiwagi T, Kitamura T, Yamamoto T, Sawamura M, Ishida K, Watanabe C, Sekimoto S, Minami H, Tachiki M, Klemm RA, Hattori T, Kadowaki K. Tunable terahertz emission from the intrinsic Josephson junctions in acute isosceles triangular Bi₂Sr₂CaCu₂O₈+δ mesas. Opt Express 2013; 21:2171-2184. [PMID: 23389198 DOI: 10.1364/oe.21.002171] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In order to determine if the mesa geometry might affect the properties of the coherent terahertz (THz) radiation emitted from the intrinsic Josephson junctions in mesas constructed from single crystals of the high-temperature superconductor, Bi₂Sr₂CaCu₂O₈+δ, we studied triangular mesas. For equilateral triangular mesas, the observed emission was found to be limited to the single mesa TM(1,0) mode. However, tunable radiation over the range from 0.495 to 0.934 THz was found to arise from an acute isosceles triangular mesa. This 47% tunability is the widest yet observed from the outer current-voltage characteristic branch of such mesas of any geometry. Although the radiation at a few of the frequencies in the tunable range appear to have been enhanced by cavity resonances, most frequencies are far from such resonance frequencies, and can only be attributed to the ac-Josephson effect.
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Affiliation(s)
- K Delfanazari
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan.
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12
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Ito S, Nakasuka K, Sekimoto S, Miyata K, Inomata M, Yoshida T, Tamai N, Saeki T, Suzuki S, Murakami Y, Morino A, Shimizu Y, Sato K. Clinical significance of provoked coronary spasm at chronic stage in patients who underwent successful complete coronary revascularization with first-generation drug-eluting stents. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/wjcd.2013.34a005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Ito S, Kamegai A, Murakami Y, Nakasuka K, Sekimoto S, Miyata K, Inomata M, Yoshida T, Tamai N, Saeki T, Suzuki S, Sato K, Morino A, Shimizu Y. Persistent Electrical Scar in the Atrium Evaluated on Voltage Mapping With a CARTO System in Suspected Acute Myocarditis. Circ J 2012; 76:2895-7. [DOI: 10.1253/circj.cj-12-0475] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shigenori Ito
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Akiyo Kamegai
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | | | - Kosuke Nakasuka
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Satoru Sekimoto
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Kazuyuki Miyata
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Masahiko Inomata
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Takayuki Yoshida
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Nozomu Tamai
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Tomoaki Saeki
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Shin Suzuki
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Koichi Sato
- Division of Cardiovascular Medicine, Nagoya City East Medical Center
| | - Akihiro Morino
- Division of Clinical Engineering, Nagoya City East Medical Center
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14
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Ebihara M, Sekimoto S, Shirai N, Hamajima Y, Yamamoto M, Kumagai K, Oura Y, Ireland TR, Kitajima F, Nagao K, Nakamura T, Naraoka H, Noguchi T, Okazaki R, Tsuchiyama A, Uesugi M, Yurimoto H, Zolensky ME, Abe M, Fujimura A, Mukai T, Yada Y. Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa. Science 2011; 333:1119-21. [DOI: 10.1126/science.1207865] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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15
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Shiojiri M, Maeda T, Hirota Y, Isshiki T, Sekimoto S, Iwauchi K, Keda YI. High-resolution electron microscopy of BaxK2-xFexTi6-xO13 crystals in polar-glass state. J Microsc 2011. [DOI: 10.1111/j.1365-2818.1986.tb02759.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Sekimoto S, Kobayashi T, Takamiya K, Ebihara M, Shibata S. Instrumental neutron activation analysis of spherule samples recovered from the Pacific ocean sea sediment and Antarctic ice sheet. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0601-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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17
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Shiojiri M, Kaito C, Sekimoto S, Nakamura N. Polarity and inversion twins in ZnSe crystals observed by high-resolution electron microscopy. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418618208239574] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [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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18
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Morimura Y, Hoshi K, Tomita T, Hanyu T, Sekimoto S, Sato A. A twenty-year period in mass screening for uterine cervical cancer in Fukushima Prefecture. Fukushima J Med Sci 1998; 44:59-67. [PMID: 10091378] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
To explore the change in age distribution of patients with uterine cervical cancer and its precursors, we analyzed 2,168,923 women in a series of mass screening for uterine cervical cancer in Fukushima Prefecture. The first examination rate was not increased over a 20-year period. During the screening period, severe dysplasia was found in 693 women, carcinoma in situ in 672 women, microinvasive carcinoma in 517 women, and frank invasive carcinoma in 421 women. The numbers of patients with frank invasive carcinoma was decreased gradually in every age group, which might reflect the effectiveness of our mass screening project. Although the detection rates of severe dysplasia, carcinoma in situ and microinvasive carcinoma have not changed in patients groups over 40 years old, the detection rates were increased in patients under the age of 39. These results may reflect a recent tendency for cervical cancer to increase in young women. It is important, therefore, to increase the screening rate for young women to prevent the progression with advanced cervical cancer.
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Affiliation(s)
- Y Morimura
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima City, Japan
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19
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Abstract
Several EEG studies have reported an early component of the visual evoked potential. However, it is controversial whether this component is cortical or subcortical. Our study has aimed to clarify this problem using MEG and EEG in nine normal volunteers. A total of 4000 stimuli were presented to the monocular visual hemifield through a light-proof stimulating goggle and the visual evoked magnetic field and visual evoked potential was measured above the occipital lobe. The early component was observed in three of the nine subjects. The latency ranged from 40 to 45 ms in MEG and from 39 to 47 ms in EEG. The result of dipole localization analysis showed that its origin was cortical, and specifically, the striate cortex.
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Affiliation(s)
- K Yoneda
- Department of Cognitive Neuroscience, Faculty of Medicine, University of Tokyo, Japan
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20
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Abstract
Changes in tubulin solubility during neurite formation were studied biochemically using rat dorsal root ganglion neurons in culture. When fractionated with Ca(2+)-containing buffer at low temperature, a considerable proportion of total cellular tubulin was recovered in the insoluble fraction. We designated this cold/Ca(2+)-insoluble tubulin (InsT) and distinguished it from cold/Ca(2+)-soluble tubulin (SoIT). From the relative amount of InsT, neurite formation was found to proceed through two distinct stages. The first 6 days after plating (stage 1) in which the proportion of InsT increased dramatically (from 5 to 60%) coincided with neurite outgrowth. In the following period (stage 2), a constant level of InsT was maintained, whereas neurite maturation took place. Pulse-labeling experiments further revealed that the two stages differed significantly in terms of tubulin metabolism. High rates of synthesis as well as conversion from SoIT to InsT were observed in stage 1, whereas stage 2 was characterized by a decrease in both of these rates and an increase in the rate of degradation. The results show for the first time the coordinated changes in tubulin metabolism that underlie the process of neurite formation.
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Affiliation(s)
- S Sekimoto
- Department of Molecular and Cellular Neurobiology, Gunma University School of Medicine, Japan
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Abstract
Actin is one of the major cytoskeletal proteins carried in slow axonal transport. Since more than 50% of actin in the axon was recovered in the high-speed supernatant, we looked for G-actin-binding proteins in slow axonal transport. Two weeks after injection of L-[35S]methionine into the rat spinal cord (L3-L5), labeled proteins in the sciatic nerve were extracted and those with potential abilities to interact with G-actin were detected by two independent methods: (A) DNAase I affinity chromatography and (B) blot overlay with biotinylated actin. By method (A), a 68 kDa Ca(2+)-dependent binding protein and a 45 kDa Ca(2+)-independent binding protein were detected. The 68 kDa protein was also a major protein binding to actin in method (B). The 68 kDa protein was identified with the Ca(2+)-dependent phospholipid binding protein annexin VI by two-dimensional electrophoresis and Western blotting. As annexin VI is a component of slow axonal transport, it does not seem to be bound to membranous organelles in the axon. Our results suggest that annexin VI may play a role in the control of actin assembly and membrane-microfilament interaction.
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Affiliation(s)
- K Tanaka
- Department of Molecular and Cellular Neurobiology, Gunma University School of Medicine, Japan
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Abstract
In order to determine the would healing process in the portio vaginalis uteri, 3[H]-thymidine incorporation and hydroxyproline concentration in the granulation tissue were measured histochemically after CO2-laser treatment. As a result, the squamous epithelium showed the thymidine uptake in extended regions in the first week and in basel cell hyperplastic regions in the second week. The uptake was seen in the reserve cell hyperplastic regions of the epithelium from the 2nd week. Hydroxyproline concentration peaks mostly appeared within one week after the laser treatment. After cryosurgery, the peaks mostly appeared after two weeks or more. These results indicated that, the stromas and then the squamous and columnar epithelial cells in turn were regenerated after CO2-laser treatment, and that the regeneration occurred earlier after laser treatment than after cryosurgery.
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Affiliation(s)
- K Hoshi
- Department of Obstetrics and Gynecology, Fukushima Medical College
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23
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Abstract
The major 68-kDa protein found selectively in the faster of the two subcomponents of slow axonal transport [group IV or slow component b (SCb)] in the rat sciatic nerve has been characterized. It was found to contain two distinct classes of proteins, S1 and S2, both of which have isoelectric points of 5.7, but differ in their solubility in the presence of calcium. The S1 protein, which contributes up to 70% of the 68-kDa component, was soluble in the presence or absence of calcium, whereas the S2 protein was bound to the cytoskeleton in a calcium-dependent manner. Further characterization of the two proteins by peptide mapping and immunological methods revealed that the S1 protein belonged to a family of proteins related to the 70-kDa heat shock protein, whereas the S2 protein was identical to 68-kDa calelectrin (annexin VI). Selective occurrence in SCb of these proteins with potential abilities to regulate protein-protein or protein-membrane interactions suggests that they may play important roles in the control of cytoskeletal organization in the axon, because SCb contains mainly cytoskeletal proteins in a more dynamic form compared with the slowest rate component, slow component a, which is enriched in the stably polymerized form of these proteins.
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Affiliation(s)
- S Sekimoto
- Department of Molecular and Cellular Neurobiology, Gunma University School of Medicine, Japan
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24
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Shiojiri M, Hirota Y, Isshiki T, Okashita K, Sekimoto S. High-resolution transmission electron microscopy of inorganic materials in cellular and topological random systems. J Electron Microsc Tech 1989; 12:281-95. [PMID: 2795234 DOI: 10.1002/jemt.1060120311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The structure of amorphous Se films, in the topological random system, has been studied by the computer-simulation, electron diffraction (ED), and high-resolution transmission electron microscopy (HRTEM). As an example of HRTEM of the cellular random system, our recent investigation on Ba-ferrites is reviewed beforehand. In HRTEM images of spin-glass BaTi2-xSnxFe4O11 (x less than 0.6), magnetic clusters or clusters of FeO6-octahedra surrounded by TiO6-octahedra have been found. The structure of BaSn2Fe4O11 (x = 2) has been determined. The ordering of Sn (Ti) and Fe ions increases with increasing x, which interprets the change from the spin-glass state to nonspin-glass state at x = 0.6. It is shown that a cluster of polarized lattice ions is detectable in images of polar-glass BaxK2-xFexTi6-xO13 (x greater than or equal to 1.2). The structure models of amorphous Se films forming on a substrate have been constructed on a computer, and their radial distribution function (RDF) and HRTEM images have been calculated. Experimental RDF and HRTEM images have been obtained from vacuum-deposited amorphous Se films and are compared with the calculated ones. It is concluded that in the as-deposited films most of Se molecules may be composed of Se atoms as small as three and that by the electron-beam irradiation the molecules link to form spiral chains in amorphous state and then arrange to have the hexagonal crystal structure.
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Affiliation(s)
- M Shiojiri
- Department of Physics, Kyoto Institute of Technology, Japan
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25
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Sekimoto S. [Studies on interleukin 1 production and fibroblast stimulating activity of alveolar macrophages obtained from patients with connective tissue diseases accompanying interstitial pneumonia]. Arerugi 1987; 36:951-60. [PMID: 3502071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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26
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Sekimoto S, Saito Y, Ohara M, Nishimaki T, Kasukawa R. [The differential cell counts of bronchoalveolar lavage fluid and interleukin 1 production by alveolar macrophages in patients with collagen-vascular diseases complicated with interstitial pneumonia]. Arerugi 1986; 35:968-74. [PMID: 3492189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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27
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Sekimoto S. [Treatment of neoplasms of the uterine cervix by CO2 laser]. Gan No Rinsho 1985; 31:679-84. [PMID: 4032753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
CO2 evaporation was undertaken on 241 patients with cervical intraepithelial neoplasia. The results obtained six weeks after the treatment revealed disappearance of 89.6% of the lesions, and the therapeutic results obtained one year after reirradiation were favorable; 97.5% of the lesions had disappeared. However, not a few patients have some neoplasms of the uterine cervix to which this therapy is not applicable. Therefore, conization was started for treatment combined with diagnosis by means of CO2 laser. The therapeutic effect has been studied in 64 patients to date. Five patients with carcinoma of stage Ia and four patients with endoepithelial carcinoma who had undergone hysterectomy after conization were examined for the presence or absence of residual lesions. The lesions had disappeared completely. The remaining 64 patients who had not undergone hysterectomy are now under follow-up study, and a residual lesion was observed in only one patient, suggesting the possibility of treating a large number of CIN patients by evaporation combined with conization.
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28
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Inagaki M, Suzuki T, Nakano N, Sekimoto S, Ishikawa H, Kitano S. [Analysis of two types of seesaw nystagmus]. Nippon Ganka Gakkai Zasshi 1983; 87:498-506. [PMID: 6637671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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29
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Inagaki M, Kashima Y, Suzuki T, Nakano N, Sekimoto S, Ishikawa H, Kitano S. [Oculomotor nerve in the cavernous sinus]. Nippon Ganka Gakkai Zasshi 1983; 87:921-926. [PMID: 6673546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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30
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Kaito C, Nakamura N, Teranishi K, Sekimoto S, Shiojiri M. High resolution electron microscopic studies of the polymorphic transformation and crystal structures of low-temperature Ag2Se phases. ACTA ACUST UNITED AC 1982. [DOI: 10.1002/pssa.2210710113] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Inagaki M, Suzuki T, Sekimoto S, Ishikawa H, Ishikawa T. [A case of Wallenberg's syndrome with ocular lateropulsion and seesaw nystagmus]. Rinsho Shinkeigaku 1982; 22:295-9. [PMID: 7127972] [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: 01/23/2023]
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32
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Ishikawa H, Sekimoto S, Nakano N. [An application of the Arden grating test to normal population and amblyopic patients (author's transl)]. Nippon Ganka Gakkai Zasshi 1979; 83:1549-55. [PMID: 525584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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33
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Kika K, Sekimoto S. [Concept and practice of suction delivery]. Sanfujinka No Jissai 1967; 16:748-53. [PMID: 5630915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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34
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Okawa T, Sekimoto S. A case of bladder-paralysis, considered a side effect with an imidazole derivative, metronidazole. J Jpn Obstet Gynecol Soc 1964; 11:225-8. [PMID: 5886444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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