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Otsuka H, Tabata H, Shi H, Sugimoto M, Kaga H, Someya Y, Naito H, Ito N, Abudurezake A, Umemura F, Tajima T, Kakehi S, Yoshizawa Y, Ishijima M, Kawamori R, Watada H, Tamura Y. Corrigendum: Playing basketball and volleyball during adolescence is associated with higher bone mineral density in old age: the Bunkyo Health Study. Front Physiol 2024; 15:1385648. [PMID: 38601211 PMCID: PMC11005470 DOI: 10.3389/fphys.2024.1385648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 03/19/2024] [Indexed: 04/12/2024] Open
Abstract
[This corrects the article DOI: 10.3389/fphys.2023.1227639.].
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Affiliation(s)
- Hikaru Otsuka
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hiroki Tabata
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Huicong Shi
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Mari Sugimoto
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hideyoshi Kaga
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Yuki Someya
- Graduate School of Health and Sports Science, Juntendo University, Inzai-shi, Chiba, Japan
| | - Hitoshi Naito
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Naoaki Ito
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Abulaiti Abudurezake
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Futaba Umemura
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Tsubasa Tajima
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Saori Kakehi
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Yasuyo Yoshizawa
- Department of Healthy Life Expectancy, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Muneaki Ishijima
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Medicine for Orthopaedics and Motor Organ, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Ryuzo Kawamori
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hirotaka Watada
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Yoshifumi Tamura
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Healthy Life Expectancy, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Faculty of International Liberal Arts, Juntendo University, Bunkyo-ku, Tokyo, Japan
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Akai H, Yasaka K, Sugawara H, Furuta T, Tajima T, Kato S, Yamaguchi H, Ohtomo K, Abe O, Kiryu S. Faster acquisition of magnetic resonance imaging sequences of the knee via deep learning reconstruction: a volunteer study. Clin Radiol 2024:S0009-9260(24)00141-7. [PMID: 38614869 DOI: 10.1016/j.crad.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/29/2023] [Accepted: 03/02/2024] [Indexed: 04/15/2024]
Abstract
AIM To evaluate whether deep learning reconstruction (DLR) can accelerate the acquisition of magnetic resonance imaging (MRI) sequences of the knee for clinical use. MATERIALS AND METHODS Using a 1.5-T MRI scanner, sagittal fat-suppressed T2-weighted imaging (fs-T2WI), coronal proton density-weighted imaging (PDWI), and coronal T1-weighted imaging (T1WI) were performed. DLR was applied to images with a number of signal averages (NSA) of 1 to obtain 1DLR images. Then 1NSA, 1DLR, and 4NSA images were compared subjectively, and by noise (standard deviation of intra-articular water or medial meniscus) and contrast-to-noise ratio between two anatomical structures or between an anatomical structure and intra-articular water. RESULTS Twenty-seven healthy volunteers (age: 40.6 ± 11.9 years) were enrolled. Three 1DLR image sequences were obtained within 200 s (approximately 12 minutes for 4NSA image). According to objective evaluations, PDWI 1DLR images showed the smallest noise and significantly higher contrast than 1NSA and 4NSA images. For fs-T2WI, smaller noise and higher contrast were observed in the order of 4NSA, 1DLR, and 1NSA images. According to the subjective analysis, structure visibility, image noise, and overall image quality were significantly better for PDWI 1DLR than 1NSA images; moreover, the visibility of the meniscus and bone, image noise, and overall image quality were significantly better for 1DLR than 4NSA images. Fs-T2WI and T1WI 1DLR images showed no difference between 1DLR and 4NSA images. CONCLUSION Compared to PDWI 4NSA images, PDWI 1DLR images were of higher quality, while the quality of fs-T2WI and T1WI 1DLR images was similar to that of 4NSA images.
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Affiliation(s)
- H Akai
- Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan; Department of Radiology, International University of Health and Welfare Narita Hospital, 852 Hatakeda, Narita, Chiba, 286-0124, Japan
| | - K Yasaka
- Department of Radiology, International University of Health and Welfare Narita Hospital, 852 Hatakeda, Narita, Chiba, 286-0124, Japan; Department of Radiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - H Sugawara
- Department of Diagnostic Radiology, McGill University, 1650 Cedar Avenue, Montreal, Quebec, H3G 1A4, Canada
| | - T Furuta
- Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - T Tajima
- Department of Radiology, International University of Health and Welfare Narita Hospital, 852 Hatakeda, Narita, Chiba, 286-0124, Japan; Department of Radiology, International University of Health and Welfare Mita Hospital, 1-4-3 Mita, Minato-ku, Tokyo, 108-8329, Japan
| | - S Kato
- Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - H Yamaguchi
- Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - K Ohtomo
- International University of Health and Welfare, 2600-1 Kiakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - O Abe
- Department of Radiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Kiryu
- Department of Radiology, International University of Health and Welfare Narita Hospital, 852 Hatakeda, Narita, Chiba, 286-0124, Japan.
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Tajima T, Kaga H, Someya Y, Tabata H, Naito H, Kakehi S, Ito N, Yamasaki N, Sato M, Kadowaki S, Sugimoto D, Nishida Y, Kawamori R, Watada H, Tamura Y. Low Handgrip Strength (Possible Sarcopenia) With Insulin Resistance Is Associated With Type 2 Diabetes Mellitus. J Endocr Soc 2024; 8:bvae016. [PMID: 38370441 PMCID: PMC10872678 DOI: 10.1210/jendso/bvae016] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Indexed: 02/20/2024] Open
Abstract
Context Older adults with sarcopenic obesity are at high risk for type 2 diabetes mellitus (T2DM). However, few East Asians have sarcopenic obesity. Since many East Asians have insulin resistance (IR) without obesity, it is possible that older East Asians with sarcopenia and IR might be at high risk for T2DM. However, this relationship has not been studied. Methods This cross-sectional study included 1629 older adults aged 65 to 84 years registered in the Bunkyo Health Study. All underwent a 75-g oral glucose tolerance test and handgrip strength measurement. Participants were classified into 4 groups by possible sarcopenia (handgrip strength <28 kg in men and <18 kg in women) and IR status (triglyceride glucose [TyG] index ≥8.79 for men and ≥8.62 for women [third quartile]). Modified Poisson regression was used to estimate relative risk (RR) and 95% CIs for T2DM with adjustment for confounding factors. Results The mean age was 73.1 ± 5.4 years. T2DM was diagnosed in 212 (13.0%) participants. After adjusting for age, sex, body mass index, use of lipid-lowering medications, hypertension, and cardiovascular disease, possible sarcopenia and IR were associated with T2DM, with their coexistence showing a notably stronger association (control: RR, 1.00 [Reference]; possible sarcopenia: RR, 1.55 [95% CI, 1.04-2.30]; IR: RR, 2.69 [95% CI, 1.99-3.65]; and IR possible sarcopenia: RR, 4.76 [95% CI, 3.34-6.79]). Conclusion Possible sarcopenia based on low handgrip strength and IR based on the TyG index are independently associated with T2DM in older Japanese individuals. Their coexistence shows a particularly strong association with T2DM.
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Affiliation(s)
- Tsubasa Tajima
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Hideyoshi Kaga
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Yuki Someya
- Sportology Center, Juntendo University, Tokyo, 113-8421, Japan
| | - Hiroki Tabata
- Sportology Center, Juntendo University, Tokyo, 113-8421, Japan
| | - Hitoshi Naito
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Saori Kakehi
- Sportology Center, Juntendo University, Tokyo, 113-8421, Japan
- Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Naoaki Ito
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Nozomu Yamasaki
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Motonori Sato
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Satoshi Kadowaki
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Daisuke Sugimoto
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Yuya Nishida
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
| | - Ryuzo Kawamori
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
- Sportology Center, Juntendo University, Tokyo, 113-8421, Japan
- Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Hirotaka Watada
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
- Sportology Center, Juntendo University, Tokyo, 113-8421, Japan
| | - Yoshifumi Tamura
- Department of Metabolism & Endocrinology, Juntendo University, Tokyo, 113-8421, Japan
- Sportology Center, Juntendo University, Tokyo, 113-8421, Japan
- Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
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Naito H, Kaga H, Someya Y, Tabata H, Kakehi S, Tajima T, Ito N, Yamasaki N, Sato M, Kadowaki S, Sugimoto D, Nishida Y, Kawamori R, Watada H, Tamura Y. Fat Accumulation and Elevated Free Fatty Acid Are Associated With Age-Related Glucose Intolerance: Bunkyo Health Study. J Endocr Soc 2024; 8:bvad164. [PMID: 38188453 PMCID: PMC10768880 DOI: 10.1210/jendso/bvad164] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Indexed: 01/09/2024] Open
Abstract
Context Older adults have a high prevalence of new-onset diabetes, often attributed to age-related decreases in insulin sensitivity and secretion. It remains unclear whether both insulin sensitivity and secretion continue to deteriorate after age 65. Objective To investigate the effects of aging on glucose metabolism after age 65 and to identify its determinants. Methods This cross-sectional study involved 1438 Japanese older adults without diabetes. All participants underwent a 75-g oral glucose tolerance test (OGTT). Body composition and fat distribution were measured with dual-energy X-ray absorptiometry and magnetic resonance imaging. Participants were divided into 4 groups by age (65-69, 70-74, 75-79, and 80-84 years) to compare differences in metabolic parameters. Results Mean age and body mass index were 73.0 ± 5.4 years and 22.7 ± 3.0 kg/m2. The prevalence of newly diagnosed diabetes increased with age. Fasting glucose, fasting insulin, the area under the curve (AUC)-insulin/AUC-glucose and insulinogenic index were comparable between groups. AUC-glucose and AUC-insulin during OGTT were significantly higher and Matsuda index and disposition index (Matsuda index · AUC-insulin/AUC-glucose) were significantly lower in the age 80-84 group than in the age 65-69 group. Age-related fat accumulation, particularly increased visceral fat area (VFA), and elevated free fatty acid (FFA) levels were observed. Multiple regression revealed strong correlations of both Matsuda index and disposition index with VFA and FFA. Conclusion Glucose tolerance declined with age in Japanese older adults, possibly due to age-related insulin resistance and β-cell deterioration associated with fat accumulation and elevated FFA levels.
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Affiliation(s)
- Hitoshi Naito
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Hideyoshi Kaga
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Yuki Someya
- Sportology Center, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Hiroki Tabata
- Sportology Center, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Saori Kakehi
- Sportology Center, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Tsubasa Tajima
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Naoaki Ito
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Nozomu Yamasaki
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Motonori Sato
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Satoshi Kadowaki
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Daisuke Sugimoto
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Yuya Nishida
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Ryuzo Kawamori
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Hirotaka Watada
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Yoshifumi Tamura
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
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Otsuka H, Tabata H, Shi H, Sugimoto M, Kaga H, Someya Y, Naito H, Ito N, Abudurezake A, Umemura F, Tajima T, Kakehi S, Yoshizawa Y, Ishijima M, Kawamori R, Watada H, Tamura Y. Playing basketball and volleyball during adolescence is associated with higher bone mineral density in old age: the Bunkyo Health Study. Front Physiol 2023; 14:1227639. [PMID: 37900955 PMCID: PMC10602637 DOI: 10.3389/fphys.2023.1227639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/28/2023] [Indexed: 10/31/2023] Open
Abstract
Introduction: Exercise is beneficial for increasing areal bone mineral density (aBMD) in adolescence and maintaining it in old age. Moreover, high-impact sports are more effective than low-impact sports in increasing aBMD. This study aimed to determine the types of adolescent sports played in school-based sports clubs associated with aBMD in old age. Methods: In total, 1,596 older adults (681 men and 915 women, age: 65-84 years) living in an urban area of Japan were evaluated for the femoral neck and lumbar spine aBMD using dual-energy X-ray absorptiometry. The association between adolescent sports played in sports clubs and aBMD in old age was analyzed using multiple regression analysis, with femoral neck and lumbar spine aBMD as dependent variables, and sports type and participant characteristics such as age, body weight, and serum 25-hydroxyvitamin D [25(OH)D] level, as independent variables. Results: For the femoral neck, basketball was associated with aBMD in older men (β = 0.079, p < 0.05) and women (β = 0.08, p < 0.01), whereas current body weight and 25(OH)D level were associated with aBMD in both sexes. For the lumbar spine, volleyball (β = 0.08, p < 0.01) and swimming (β = 0.06, p < 0.05) was significantly associated with lumbar spine aBMD, whereas current body weight, 25(OH)D, and diabetes mellitus were associated with aBMD in older women. Conclusion: Both men and women who played basketball in adolescence had higher femoral neck aBMD in old age. Moreover, women who played volleyball in adolescence had higher lumbar spine aBMD in old age.
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Affiliation(s)
- Hikaru Otsuka
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hiroki Tabata
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Huicong Shi
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Mari Sugimoto
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hideyoshi Kaga
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Yuki Someya
- Graduate School of Health and Sports Science, Juntendo University, Inzai-shi, Chiba, Japan
| | - Hitoshi Naito
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Naoaki Ito
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Abulaiti Abudurezake
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Futaba Umemura
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Tsubasa Tajima
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Saori Kakehi
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Yasuyo Yoshizawa
- Department of Healthy Life Expectancy, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Muneaki Ishijima
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Medicine for Orthopaedics and Motor Organ, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Ryuzo Kawamori
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hirotaka Watada
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Yoshifumi Tamura
- Sportology Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Sports Medicine and Sportology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Metabolism and Endocrinology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Healthy Life Expectancy, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Faculty of International Liberal Arts, Juntendo University, Bunkyo-ku, Tokyo, Japan
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Fukuda I, Hirayama A, Kawasugi K, Kobayashi T, Maeda H, Nakamura M, Yamada N, Tajima T, Tachiiri M, Okayama Y, Sunaya T, Hirano K, Hayasaki T. Safety Profile and Effectiveness of Rivaroxaban for Patients With Venous Thromboembolism in Japan - Results From Post-Marketing Surveillance (XASSENT). Circ J 2023; 87:1175-1184. [PMID: 37245989 DOI: 10.1253/circj.cj-23-0104] [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] [Indexed: 05/30/2023]
Abstract
BACKGROUND The incidence of venous thromboembolism (VTE; pulmonary embolism [PE] and/or deep vein thrombosis [DVT]) in Japan is increasing, but relatively small numbers of patients from Japan have been included in studies investigating rivaroxaban (a direct factor Xa inhibitor) for the treatment of VTE and preventing its recurrence.Methods and Results: An open-label, prospective, observational study (XASSENT [NCT02558465]) investigated the safety profile and effectiveness of rivaroxaban for ≤2 years in the treatment of VTE and prevention of its recurrence in Japanese clinical practice. Primary outcomes were major bleeding and symptomatic recurrent VTE. Statistical analyses were exploratory and descriptive. Overall, 2,540 patients were enrolled (safety analysis population [SAP], n=2,387; effectiveness analysis population [EAP], n=2,386). In the SAP, >80% of patients received the approved rivaroxaban dose, the mean (standard deviation) age was 66.6 (15.0) years, ≈74% were >50 kg, and 43% had a creatinine clearance ≥80 mL/min. PE+DVT, PE only, and DVT only were reported in 42%, 8%, and 50% of patients, respectively, and active cancer in 17% of patients. Major bleeding was reported in 69 patients (2.89%; 3.60%/patient-year; SAP) and symptomatic PE/DVT recurrence in 26 patients (1.09%; 1.36%/patient-year; EAP) during the treatment period. CONCLUSIONS XASSENT provided information on the expected proportions of bleeding and VTE recurrence during rivaroxaban treatment in Japanese clinical practice; no new concerns of safety or effectiveness were found.
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Affiliation(s)
- Ikuo Fukuda
- Department of Cardiology, Keimeikai Yokawa Hospital
| | | | - Kazuo Kawasugi
- Department of Internal Medicine, Teikyo University School of Medicine
| | - Takao Kobayashi
- Department of Obstetrics and Gynecology, Hamamatsu Medical Center
| | | | | | | | - Tsubasa Tajima
- Medical Affairs Cardiovascular and Nephrology, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd
| | - Michiya Tachiiri
- Medical Affairs Cardiovascular and Nephrology, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd
| | - Yutaka Okayama
- Pharmacovigilance Monitoring and Governance, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd
| | - Toshiyuki Sunaya
- Statistics and Data Insights, Data Sciences and Analytics, Research and Development Japan, Bayer Yakuhin, Ltd
| | - Kazufumi Hirano
- Pharmacovigilance Monitoring and Governance, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd
| | - Takanori Hayasaki
- Medical Affairs Cardiovascular and Nephrology, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd
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Tabata H, Otsuka H, Shi H, Sugimoto M, Kaga H, Someya Y, Naito H, Ito N, Abudurezake A, Umemura F, Kiya M, Tajima T, Kakehi S, Yoshizawa Y, Kawamori R, Watada H, Tamura Y. Effects of exercise habits in adolescence and older age on sarcopenia risk in older adults: the Bunkyo Health Study. J Cachexia Sarcopenia Muscle 2023. [PMID: 37055913 DOI: 10.1002/jcsm.13218] [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] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 02/02/2023] [Accepted: 02/28/2023] [Indexed: 04/15/2023] Open
Abstract
BACKGROUND Sarcopenia, defined as an age-associated loss of skeletal muscle mass and function, is a major risk factor for requiring long-term care. Because physical activity in adolescence and older age enhances peak muscle function in youth and prevents muscle function decline in older age, older adults with exercise habits during both periods may be at a lower risk for sarcopenia. We investigated the relationship between exercise habits in adolescence and older age and sarcopenia and its components in community-dwelling older Japanese adults. METHODS This study included 1607 community-dwelling individuals (aged 65-84, medians 73 years, 679 men and 928 women) with complete health examinations, including measurements of skeletal muscle index, handgrip strength and gait speed, who were enrolled in the Bunkyo Health Study. We divided the participants into four groups according to exercise habits in adolescence and older age: no exercise in either period (none-none; NN), exercise only in adolescence (active-none; AN), exercise only in older age (none-active; NA) and exercise in both periods (active-active; AA). Multivariate-adjusted logistic regression models were used to estimate the odds ratios (ORs) and associated 95% confidence intervals (CIs) in each group for the prevalence of sarcopenia, defined as low muscle mass and low muscle performance, as compared with the NN group. Low muscle performance was defined as low muscle strength and/or low gait speed. RESULTS The total prevalence of sarcopenia was 6.6% (45/679) in men and 1.7% (16/928) in women, the total prevalence of low muscle mass was 14.3% (97/679) in men and 5.2% (48/928) in women, and the total prevalence of low muscle performance was 25.6% (174/679) in men and 19.6% (182/928) in women. In men, the ORs (95% CIs) for sarcopenia, low muscle mass and low muscle performance were significantly lower in the AA group (sarcopenia: 0.29 [0.09-0.95], P = 0.041; low muscle mass: 0.21 [0.09-0.52], P = 0.001; and low muscle performance: 0.52 [0.28-0.97], P = 0.038). In women, the OR (95% CI) for low muscle performance was significantly lower in the AA group than in the other groups (0.48 [0.27-0.84], P = 0.010), whereas none of the ORs for sarcopenia and low muscle mass were significant. CONCLUSIONS Older men with exercise habits in both adolescence and older age were at a lower risk of sarcopenia, low muscle mass and low muscle performance, whereas older women with exercise habits at both time periods were at a lower risk of low muscle performance.
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Affiliation(s)
- Hiroki Tabata
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hikaru Otsuka
- Department of Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Huicong Shi
- Department of Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mari Sugimoto
- Department of Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hideyoshi Kaga
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuki Someya
- Juntendo University Graduate School of Health and Sports Science, Chiba, Japan
| | - Hitoshi Naito
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Naoaki Ito
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Abulaiti Abudurezake
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Futaba Umemura
- Department of Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mai Kiya
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tsubasa Tajima
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Saori Kakehi
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yasuyo Yoshizawa
- Center for Healthy Life Expectancy, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ryuzo Kawamori
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hirotaka Watada
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoshifumi Tamura
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Sports Medicine & Sportology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Center for Healthy Life Expectancy, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Faculty of International Liberal Arts, Juntendo University, Tokyo, Japan
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8
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Shi H, Tabata H, Otsuka H, Someya Y, Kaga H, Naito H, Abulaiti A, Umemura F, Kiya M, Ito N, Tajima T, Yoshizawa Y, Kakehi S, Kawamori R, Tamura Y. Association between Lifespan Exercise Habits and Cognitive Function in Older Age: the Bunkyo Health Study. Alzheimers Dement 2022. [DOI: 10.1002/alz.068900] [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: 12/24/2022]
Affiliation(s)
- Huicong Shi
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Hiroki Tabata
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Hikaru Otsuka
- Juntendo University Graduate School of Medicine Tokyo Japan
| | | | - Hideyoshi Kaga
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Hitoshi Naito
- Juntendo University Graduate School of Medicine Tokyo Japan
| | | | - Futaba Umemura
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Mai Kiya
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Naoaki Ito
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Tsubasa Tajima
- Juntendo University Graduate School of Medicine Tokyo Japan
| | | | - Saori Kakehi
- Juntendo University Graduate School of Medicine Tokyo Japan
| | - Ryuzo Kawamori
- Juntendo University Graduate School of Medicine Tokyo Japan
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9
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Matsunaga D, Tanaka Y, Tajima T, Seyama M. Optimization of a Stacked-design Core-body-temperature Sensor for Long-period Human Trials. Annu Int Conf IEEE Eng Med Biol Soc 2022; 2022:1258-1261. [PMID: 36086560 DOI: 10.1109/embc48229.2022.9871681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We fabricated a wearable sensor that can be attached to the skin surface and continuously measure core body temperature (CBT) wirelessly over a long period. CBT is calculated from skin-surface temperature and heat flux passing through the sensor. Since heat flux is lost to the surroundings of the probe, the slightest change in convection in daily life will degrade the measurement accuracy of the sensor. Accordingly, we previously proposed a heat-flux-path control structure to reduce the absolute amount of heat-flux loss. To make wearable sensors for long-term human trials, we proposed an integrated design in which a sensor probe, a circuit board, and a battery are stacked. We optimized the proposed design by computer simulation and evaluated the fabricated sensor by a phantom experiment in which the convectional state was changed. The evaluation results demonstrate that the sensor has limits of agreement (LOA) of [-0.13; 0.03]°C under 1-m/s-wind convection. Moreover, a preliminary human trial conducted under daily-life conditions (including convectional changes) demonstrated that the sensor has LOA of [-0.18; 0.22]°C. These results demonstrate that the fabricated sensor is suitable for CBT measurement.
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10
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Roa D, Leon S, Paucar O, Gonzales A, Schwarz B, Olguin E, Moskvin V, Alva-Sanchez M, Glassell M, Correa N, Moyses H, Shankar A, Hamrick B, Sarria GR, Li B, Tajima T, Necas A, Guzman C, Challco R, Montoya M, Meza Z, Zapata M, Gonzales A, Marquez F, Neira R, Vilca W, Mendez J, Hernandez J. Monte Carlo simulations and phantom validation of low-dose radiotherapy to the lungs using an interventional radiology C-arm fluoroscope. Phys Med 2021; 94:24-34. [PMID: 34979431 DOI: 10.1016/j.ejmp.2021.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/30/2021] [Accepted: 12/27/2021] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To use MC simulations and phantom measurements to investigate the dosimetry of a kilovoltage x-ray beam from an IR fluoroscope to deliver low-dose (0.3-1.0 Gy) radiotherapy to the lungs. MATERIALS AND METHODS PENELOPE was used to model a 125 kV, 5.94 mm Al HVL x-ray beam produced by a fluoroscope. The model was validated through depth-dose, in-plane/cross-plane profiles and absorbed dose at 2.5-, 5.1-, 10.2- and 15.2-cm depths against the measured beam in an acrylic phantom. CT images of an anthropomorphic phantom thorax/lungs were used to simulate 0.5 Gy dose distributions for PA, AP/PA, 3-field and 4-field treatments. DVHs were generated to assess the dose to the lungs and nearby organs. Gafchromic film was used to measure doses in the phantom exposed to PA and 4-field treatments, and compared to the MC simulations. RESULTS Depth-dose and profile results were within 3.2% and 7.8% of the MC data uncertainty, respectively, while dose gamma analysis ranged from 0.7 to 1.0. Mean dose to the lungs were 1.1-, 0.8-, 0.9-, and 0.8- Gy for the PA, AP/PA, 3-field, and 4-field after isodose normalization to cover ∼ 95% of each lung volume. Skin dose toxicity was highest for the PA and lowest for the 4-field, and both arrangements successfully delivered the treatment on the phantom. However, the dose distribution for the PA was highly non-uniform and produced skin doses up to 4 Gy. The dose distribution for the 4-field produced a uniform 0.6 Gy dose throughout the lungs, with a maximum dose of 0.73 Gy. The average percent difference between experimental and Monte Carlo values were -0.1% (range -3% to +4%) for the PA treatment and 0.3% (range -10.3% to +15.2%) for the 4-field treatment. CONCLUSION A 125 kV x-ray beam from an IR fluoroscope delivered through two or more fields can deliver an effective low-dose radiotherapy treatment to the lungs. The 4-field arrangement not only provides an effective treatment, but also significant dose sparing to healthy organs, including skin, compared to the PA treatment. Use of fluoroscopy appears to be a viable alternative to megavoltage radiation therapy equipment for delivering low-dose radiotherapy to the lungs.
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Affiliation(s)
- D Roa
- Department of Radiation Oncology, University of California, Irvine Health, Orange, CA 92868, USA.
| | - S Leon
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - O Paucar
- Facultad de Ingenieria Electrica y Electronica, Universidad Nacional de Ingenieria, Lima, Peru
| | - A Gonzales
- Facultad de Ciencias, Universidad Nacional de Ingenieria, Lima, Peru
| | - B Schwarz
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - E Olguin
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - V Moskvin
- Department of Radiation Oncology, St. Judes Children's Research Hospital, Memphis, TN 38105, USA
| | - M Alva-Sanchez
- Department of Exact and Applied Sciences, University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - M Glassell
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - N Correa
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - H Moyses
- Department of Radiation Oncology, University of California, Irvine Health, Orange, CA 92868, USA
| | - A Shankar
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - B Hamrick
- Environmental Health and Safety, University of California, Irvine Health, Orange, CA 92868, USA
| | - G R Sarria
- University Hospital Bonn, Department of Radiation Oncology, University of Bonn, Bonn, Germany
| | - B Li
- Department of Radiation Oncology, University of California, San Francisco, CA 94115, USA
| | - T Tajima
- Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA
| | - A Necas
- TAE Technologies, 1961 Pauling, Foothill Ranch, CA 92610, USA
| | - C Guzman
- Facultad de Medicina Humana, Universidad Ricardo Palma, Lima, Peru
| | - R Challco
- Facultad de Ciencias, Universidad Nacional de Ingenieria, Lima, Peru
| | - M Montoya
- Facultad de Ciencias, Universidad Nacional de Ingenieria, Lima, Peru
| | - Z Meza
- Facultad de Ciencias, Universidad Nacional de Ingenieria, Lima, Peru
| | - M Zapata
- Facultad de Ciencias, Universidad Nacional de Ingenieria, Lima, Peru
| | - A Gonzales
- Clinica Aliada contra el Cancer, Lima, Peru
| | - F Marquez
- Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - R Neira
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - W Vilca
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - J Mendez
- Facultad de Ciencias Naturales y Matemática, Universidad Nacional del Callao, Callao, Peru
| | - J Hernandez
- HRS Oncology International, Las Vegas, NV 89119, USA
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11
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Fukuda I, Hirayama A, Kawasugi K, Kobayashi T, Maeda H, Nakamura M, Nakanishi N, Yamada N, Tajima T, Iwashiro S, Okayama Y, Sunaya T, Hirano K, Hayasaki T. Design and Baseline Data for a Prospective Observational Study of Rivaroxaban in Patients with Venous Thromboembolism in Japan (XASSENT). TH Open 2021; 5:e521-e532. [PMID: 34877450 PMCID: PMC8639284 DOI: 10.1055/a-1664-1164] [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: 05/26/2021] [Accepted: 10/01/2021] [Indexed: 11/18/2022] Open
Abstract
Background
The efficacy and safety of rivaroxaban have been demonstrated in phase 3 trials of patients with venous thromboembolism (VTE; pulmonary embolism [PE] and deep vein thrombosis [DVT]). Data regarding rivaroxaban treatment of VTE in routine Japanese clinical practice remain limited.
Objectives
XASSENT will evaluate rivaroxaban treatment of VTE in real-world Japanese clinical practice. We report the study design and baseline patient characteristics.
Methods
XASSENT (NCT02558465) is an open-label, prospective observational, post-marketing surveillance cohort study in patients receiving rivaroxaban treatment for VTE. Enrolment took place between November 2015 and March 2018. XASSENT will follow patients for up to 2 years. Primary outcome variables: major bleeding and symptomatic recurrent VTE. Statistical analyses are exploratory and descriptive.
Results
Baseline patient characteristics at June 2020 (
n
= 2,299) are presented (58.2% female; mean age 66.7 years; mean weight 60.9 kg). The population encompasses patients with wide-ranging characteristics including older age, low weight, and renal dysfunction. Most participants (67.6%) had a history of VTE risk factors at baseline. Half of the population (50.4%) had DVT only; 41.4% had DVT with PE; 8.2% had PE only. Overall, 68.4% were inpatients and 77.1% had symptomatic VTE. Rivaroxaban was prescribed for initial treatment in 84.6% of patients and maintenance treatment in 15.4%. Most were prescribed the approved dose of rivaroxaban for initial (30 mg daily; 84.4%) or maintenance (15 mg daily; 81.9%) treatment of VTE in Japan. The most common reason for selecting non-recommended dose was ‘elderly’.
Conclusions
Results from XASSENT will complement phase 3 trial data and inform clinical practice.
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Affiliation(s)
- Ikuo Fukuda
- Department of Cardiovascular Surgery, Suita Tokushukai Hospital, Suita, Japan
| | | | - Kazuo Kawasugi
- Department of Internal Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | | | - Hideaki Maeda
- Division of Cardiovascular Surgery, Nihon University School of Medicine, Tokyo, Japan
| | | | | | - Norikazu Yamada
- Department of Cardiology, Kuwana City Medical Center, Kuwana, Japan
| | - Tsubasa Tajima
- Medical Affairs Cardiovascular and Nephrology, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd., Osaka, Japan
| | - Sanghun Iwashiro
- Medical Affairs Cardiovascular and Nephrology, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd., Osaka, Japan
| | - Yutaka Okayama
- Pharmacovigilance Monitoring and Governance, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd., Osaka, Japan
| | - Toshiyuki Sunaya
- Statistics and Data Insights, Data Sciences and Analytics, Research and Development Japan, Bayer Yakuhin, Ltd., Osaka, Japan
| | - Kazufumi Hirano
- Pharmacovigilance Monitoring and Governance, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd., Osaka, Japan
| | - Takanori Hayasaki
- Medical Affairs Cardiovascular and Nephrology, Medical Affairs and Pharmacovigilance, Bayer Yakuhin, Ltd., Osaka, Japan
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12
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Tajima T, Necas A, Mourou G, Gales S, Leroy M. Spent Nuclear Fuel Incineration by Fusion-Driven Liquid Transmutator Operated in Real Time by Laser. Fusion Science and Technology 2021. [DOI: 10.1080/15361055.2021.1889918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- T. Tajima
- TAE Technologies, 19631 Pauling, Foothill Ranch, California 92610
| | - A. Necas
- TAE Technologies, 19631 Pauling, Foothill Ranch, California 92610
| | - G. Mourou
- Ecole Polytechnique, Route de Saclay, 91128 Palaiseau, France
| | - S. Gales
- Institut de Physique Nucléaire d’Orsay, IN2P3/CNRS and University Paris-Sud, 91406 Orsay Cedex, France
| | - M. Leroy
- University of Strasbourg, 4 Rue Blaise Pascal, 67081 Strasbourg, France
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13
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Player G, Clary R, Dettrick S, Korepanov S, Magee RM, Tajima T. A novel technique for in situ calibration of the C-2W electromagnetic neutral particle analyzer utilizing machine learning. Rev Sci Instrum 2021; 92:053542. [PMID: 34243356 DOI: 10.1063/5.0043868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/30/2021] [Indexed: 06/13/2023]
Abstract
In TAE Technologies' current experimental device, C-2W, neutral beam injection creates a large fast ion population that sustains a field-reversed configuration (FRC) plasma. Diagnosis of these fast ions is therefore critical for understanding the behavior of the FRC. Neutral Particle Analyzers (NPAs) are used to measure the energy spectrum of fast ions that charge exchange on background or beam neutrals and are lost from the plasma. To ensure correct diagnosis of the fast ion population, a calibration check of the NPAs was performed. A novel, generally applicable method for an in situ relative calibration of diagnostics on an unknown source with a small dataset was developed. The method utilizes a machine learning technique, Generalized Additive Models (GAMs), to reconstruct the diagnostic source distribution, and Stochastic Gradient Descent (SGD) to determine the NPA channel calibration factors. The results on both synthetic and experimental datasets are presented.
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Affiliation(s)
- G Player
- TAE Technologies, Foothill Ranch, California 92610, USA
| | - R Clary
- TAE Technologies, Foothill Ranch, California 92610, USA
| | - S Dettrick
- TAE Technologies, Foothill Ranch, California 92610, USA
| | - S Korepanov
- TAE Technologies, Foothill Ranch, California 92610, USA
| | - R M Magee
- TAE Technologies, Foothill Ranch, California 92610, USA
| | - T Tajima
- TAE Technologies, Foothill Ranch, California 92610, USA
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14
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Stanfield M, Beier NF, Hakimi S, Allison H, Farinella D, Hussein AE, Tajima T, Dollar F. Millijoule few-cycle pulses from staged compression for strong and high field science. Opt Express 2021; 29:9123-9136. [PMID: 33820346 DOI: 10.1364/oe.417404] [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] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
Intense few-cycle laser pulses have a breadth of applications in high energy density science, including particle acceleration and x-ray generation. Multi-amplifier laser system pulses have durations of tens of femtoseconds or longer. To achieve high intensities at the single-cycle limit, a robust and efficient post-compression scheme is required. We demonstrate a staged compression technique using self-phase modulation in thin dielectric media, in which few-cycle pulses can be produced. The few-cycle pulse is then used to generate extreme ultravoilet light via high harmonic generation at strong field intensities and to generate MeV electron beams via laser solid interactions at relativistic intensities.
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15
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Okada T, Kako E, Konomi T, Masuzawa M, Sakai H, Tsuchiya K, Ueki R, Umemori K, Pizzol P, Poudel A, Tajima T. Systematic evaluation of magnetic sensitivities of anisotropic magnetoresistive sensors at liquid helium temperature for superconducting cavities. Rev Sci Instrum 2021; 92:035003. [PMID: 33820008 DOI: 10.1063/5.0038805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Trapped magnetic flux in bulk superconductors reduces the quality factor Q in superconducting radio-frequency (SRF) cavities. However, the mechanisms underlying flux trapping and radio-frequency loss are not well understood. Detailed observation of the magnetic distributions is important for understanding such phenomena. Magnetic field mapping is useful for observing the magnetic field distribution around SRF cavities. Measuring the change in the magnetic field around the cavity elucidates the flux trapping behavior. Anisotropic magnetoresistive (AMR) sensors are inexpensive and small devices that can detect magnetic flux density. The magnetic sensitivities of AMR sensors need to be evaluated at liquid helium temperature for the magnetic field mapping of SRF cavities. In this study, a test stand was constructed to calibrate the magnetic sensitivities of AMR sensors in liquid helium, and 110 AMR sensors were tested using this stand. The magnetic sensitivities were evaluated systematically. A solenoid coil was used to control the uniform external magnetic field and to measure the magnetic sensitivity at low temperatures. All AMR sensors exhibited suitable sensitivities to the magnetic field around the SRF cavity. The variation in these sensitivities in all AMR sensors was ∼1%. The AMR sensors were found to have sufficient sensitivity for mapping the magnetic field around the exterior surface of the SRF cavity.
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Affiliation(s)
- T Okada
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - E Kako
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - T Konomi
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - M Masuzawa
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - H Sakai
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - K Tsuchiya
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - R Ueki
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - K Umemori
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - P Pizzol
- LANL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Poudel
- LANL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Tajima
- LANL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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16
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Batjargal K, Tajima T, Jimbo EF, Yamagata T. Effect of 4-phenylbutyrate and valproate on dominant mutations of WFS1 gene in Wolfram syndrome. J Endocrinol Invest 2020; 43:1317-1325. [PMID: 32219690 DOI: 10.1007/s40618-020-01228-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/17/2020] [Indexed: 02/08/2023]
Abstract
PURPOSE Wolfram syndrome (WS) is a rare disorder caused by mutations in WFS1 that is characterized by diabetes mellitus, optic atrophy, sensorineural deafness, diabetes insipidus, and neurodegeneration. This disease is usually inherited as an autosomal recessive trait, but an autosomal dominant form has been reported. WFS1 encodes a transmembrane protein, which is a maintenance component of endoplasmic homeostasis. These dominant mutations were thought to increase endoplasmic reticulum (ER) stress. Recent studies suggest that 4-phenylbutyrate (PBA) and valproate (VPA) reduce ER stress. The objective of this study was to analyze the effect of PBA and VPA on dominant WFS1 mutants in vitro. METHODS We determined whether dominant WFS1 mutants (p.His313Tyr, p.Trp314Arg, p.Asp325_Ile328del, p.Glu809Lys, and p.Glu864Lys) have the dominant negative effect using a luciferase assay of ER stress response element marker as ER stress. Moreover, the rescue of cell apoptosis induced by dominant WFS1 mutants following treatment with PBA or VPA was determined by quantitative real-time PCR of C/EBP homologous protein (CHOP) mRNA expression. RESULTS These mutants showed the dominant negative effect on the wild-type WFS1. In addition, the levels of ER stress and CHOP mRNA were significantly elevated by all dominant WFS1 mutants. After treatment with PBA or VPA, ER stress and cell apoptosis were reduced in each mutant. CONCLUSIONS PBA and VPA could reduce the ER stress and cell apoptosis caused by dominant WFS1 mutants.
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Affiliation(s)
- K Batjargal
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan.
- Department of Pediatrics, School of Medicine, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia.
| | - T Tajima
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan
| | - E F Jimbo
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan
| | - T Yamagata
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan
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Bangalore Krishna K, Fuqua JS, Rogol AD, Klein KO, Popovic J, Houk CP, Charmandari E, Lee PA, Freire AV, Ropelato MG, Yazid Jalaludin M, Mbogo J, Kanaka-Gantenbein C, Luo X, Eugster EA, Klein KO, Vogiatzi MG, Reifschneider K, Bamba V, Garcia Rudaz C, Kaplowitz P, Backeljauw P, Allen DB, Palmert MR, Harrington J, Guerra-Junior G, Stanley T, Torres Tamayo M, Miranda Lora AL, Bajpai A, Silverman LA, Miller BS, Dayal A, Horikawa R, Oberfield S, Rogol AD, Tajima T, Popovic J, Witchel SF, Rosenthal SM, Finlayson C, Hannema SE, Castilla-Peon MF, Mericq V, Medina Bravo PG. Use of Gonadotropin-Releasing Hormone Analogs in Children: Update by an International Consortium. Horm Res Paediatr 2020; 91:357-372. [PMID: 31319416 DOI: 10.1159/000501336] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [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: 02/25/2019] [Accepted: 06/04/2019] [Indexed: 11/19/2022] Open
Abstract
This update, written by authors designated by multiple pediatric endocrinology societies (see List of Participating Societies) from around the globe, concisely addresses topics related to changes in GnRHa usage in children and adolescents over the last decade. Topics related to the use of GnRHa in precocious puberty include diagnostic criteria, globally available formulations, considerations of benefit of treatment, monitoring of therapy, adverse events, and long-term outcome data. Additional sections review use in transgender individuals and other pediatric endocrine related conditions. Although there have been many significant changes in GnRHa usage, there is a definite paucity of evidence-based publications to support them. Therefore, this paper is explicitly not intended to evaluate what is recommended in terms of the best use of GnRHa, based on evidence and expert opinion, but rather to describe how these drugs are used, irrespective of any qualitative evaluation. Thus, this paper should be considered a narrative review on GnRHa utilization in precocious puberty and other clinical situations. These changes are reviewed not only to point out deficiencies in the literature but also to stimulate future studies and publications in this area.
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Affiliation(s)
- Kanthi Bangalore Krishna
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics, Penn State Hershey Medical Center, Hershey, Pennsylvania, USA,
| | - John S Fuqua
- Department of Pediatrics, Indiana University School of Medicine and Riley Hospital for Children, Indianapolis, Indiana, USA
| | - Alan D Rogol
- Department of Pediatrics, University of Virginia, Charlottesville, Virginia, USA
| | - Karen O Klein
- University of California, San Diego and Rady Children's Hospital, San Diego, California, USA
| | - Jadranka Popovic
- Division of Pediatric Endocrinology, Pediatric Alliance, Pittsburgh, Pennsylvania, USA
| | - Christopher P Houk
- Department of Pediatrics, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Evangelia Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - Peter A Lee
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics, Penn State Hershey Medical Center, Hershey, Pennsylvania, USA
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Morioka S, Tajima T, Sugiki Y, Hayakawa K, Ohmagari N. Adherence to personal protective equipment use among nurses in Japanese tertiary care hospitals: what determines variability? J Hosp Infect 2019; 104:344-349. [PMID: 31790746 DOI: 10.1016/j.jhin.2019.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/25/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Though nurses have frequent contact with patients, their personal protective equipment (PPE) compliance rate is low, which poses a significant challenge in infection control. AIM To investigate the relative influence of specific factors on PPE compliance. METHODS A sequential two-stage mixed-methods design was applied. In a qualitative study, semi-structured interviews were conducted from May to July 2018. In a quantitative study, a nationwide, cross-sectional survey was conducted from January to March 2019, in which a questionnaire was mailed to 735 nurses in 28 tertiary care hospitals in Japan. FINDINGS In the quantitative study, 435 (59.2%) analysable responses were obtained. In the linear regression analysis, the lack of the knowledge that 'standard precaution was the fundamental infection countermeasure applied when patients had signs of infections, and these countermeasures could be terminated if there was no infection found' was significantly associated with decreased PPE adherence, whereas an antimicrobial-resistant bacteria outbreak or a ward shutdown due to an outbreak and the belief 'I must never be the cause of spreading infection' were significantly associated with increased PPE adherence. The β of standard coefficients and t-values of the items were -0.344, -7.784, 0.090, 2.089, 0.088, 2.018, respectively. CONCLUSION This survey systematically identified nursing-associated factors that contribute to PPE compliance. As a practical approach to ensure positive outcomes, we suggest educating nurses by providing adequate knowledge on appropriate PPE use and sharing outbreak or ward shutdown experiences.
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Affiliation(s)
- S Morioka
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan.
| | - T Tajima
- AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - Y Sugiki
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Hayakawa
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - N Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
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Uchiyama F, Nakayama H, Takeda Y, Minamimoto R, Tajima T. The Relationship with Radiation Pneumonitis Followed By Stereotactic Body Radiotherapy and Emphysema Evaluated By CT. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Schmitz L, Deng B, Thompson M, Gota H, Lau C, Fulton DP, Lin Z, Tajima T, Binderbauer M. Combination Doppler backscattering/cross-polarization scattering diagnostic for the C-2W field-reversed configuration. Rev Sci Instrum 2018; 89:10H116. [PMID: 30399746 DOI: 10.1063/1.5038914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
A versatile combination Doppler backscattering and Cross-Polarization Scattering (CPS) diagnostic for the C-2W beam-driven field-reversed configuration is described. This system is capable of measuring density fluctuations and perpendicular magnetic field fluctuations across a wide wavenumber range (2.5 ≤ k θ ρ s ≤ 50), with typical resolution Δk θ/k θ ≤ 0.4-0.8. Four tunable frequencies (26 GHz ≤ f ≤ 60 GHz corresponding to plasma cut-off densities 0.8 × 1019 ≤ n e ≤ 4.4 × 1019 m-3) are launched via quasi-optical beam combiners/polarizers and an adjustable parabolic focusing mirror selecting the beam incidence angle. GENRAY ray tracing shows that the incident O-mode and backscattered CPS X-mode beam trajectories for C-2W plasma parameters nearly overlap, allowing simultaneous detection of ñ and B̃ r or B̃ θ from essentially the same scattering volume.
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Affiliation(s)
- L Schmitz
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - B Deng
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M Thompson
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - H Gota
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - C Lau
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - D P Fulton
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - Z Lin
- Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, USA
| | - T Tajima
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M Binderbauer
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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Gota H, Ishiwata J, Tanaka F, Hosozawa A, Asai T, Takahashi T, Sekiguchi J, Roche T, Matsumoto T, Dettrick S, Mok Y, Binderbauer MW, Tajima T. Internal magnetic field measurements of translated and merged field-reversed configuration plasmas in the FAT-CM device. Rev Sci Instrum 2018; 89:10J114. [PMID: 30399830 DOI: 10.1063/1.5036997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
Field-reversed configuration (FRC) Amplification via Translation-Collisional Merging (FAT-CM) experiments have recently commenced to study physics phenomena of colliding and merged FRC plasma states. Two independently formed FRCs are translated into the confinement region of the FAT-CM device, collided near the mid-plane of the device with a relative speed of up to ∼400 km/s, and a final merged FRC plasma state is achieved. To measure internal magnetic field profiles of the translated and merged FRC plasmas as well as to understand its collisional-merging process, an internal magnetic probe array, developed by TAE Technologies, has been installed in the mid-plane of the FAT-CM device. Initial magnetic field measurements indicate that both the translated and the merged FRC plasma states exhibit a clear field-reversed structure, which is qualitatively in good agreement with 2D MHD simulation. It is found and verified that a sufficient mirror field in the confinement region is required for colliding FRCs to be fully merged into a single FRC plasma state.
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Affiliation(s)
- H Gota
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - J Ishiwata
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
| | - F Tanaka
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
| | - A Hosozawa
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
| | - T Asai
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
| | - Ts Takahashi
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
| | - J Sekiguchi
- College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
| | - T Roche
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T Matsumoto
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - S Dettrick
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - Y Mok
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M W Binderbauer
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T Tajima
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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Wada H, Kimura M, Tajima T, Shirahama R, Hayashi T, Suzuki Y, Suzuki Y, Sato S, Maruyama K, Endo M, Ikeda A, Tanigawa T. 0773 Sleep Disordered Breathing Based on Symptoms And RDI in Primary School Children with Implication for Prevalence. Sleep 2018. [DOI: 10.1093/sleep/zsy061.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Wada
- Juntendo University, Tokyo, JAPAN
| | - M Kimura
- Juntendo University, Tokyo, JAPAN
| | - T Tajima
- Juntendo University, Tokyo, JAPAN
| | | | | | - Y Suzuki
- Juntendo University, Tokyo, JAPAN
| | - Y Suzuki
- Juntendo University, Tokyo, JAPAN
| | - S Sato
- Juntendo University, Tokyo, JAPAN
| | | | - M Endo
- Juntendo University, Tokyo, JAPAN
| | - A Ikeda
- Juntendo University, Tokyo, JAPAN
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23
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Izaki S, Hashimoto B, Yamaga T, Furuya M, Miyauchi A, Tanaka S, Ishizuka K, Suzuki M, Saito A, Kubota A, Tajima T, Narukawa S, Hara W, Yoshida N, Oji S, Dembo T, Fukaura H, Nomura K. Current status of MG-QOL 15-J score in Saitama prefecture 2017. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Oji S, Narukawa S, Ishizuka K, Hashimoto B, Yamaga T, Furuya M, Miyauchi A, Tanaka S, Suzuki M, Saito A, Tajima T, Hara W, Kubota A, Izaki S, Yoshida N, Dembo T, Fukaura H, Kaida K, Nomura K. Serum potassium level and short-term prognosis in patients with anti-GM1 antibody positive Guillan-Barre syndrome - preliminary study -. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Kubota A, Fukaura H, Tanaka S, Miyauchi A, Furuya M, Ishizuka K, Suzuki M, Saito A, Narukawa S, Hara W, Tajima T, Izaki S, Yoshida N, Ohji S, Dembo T, Nomura K. Influence of fingolimod on CD4 T cell subsets in the peripheral blood of patients with multiple sclerosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1827] [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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26
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Horimoto Y, Hayashi E, Ito Y, Iida A, Hibino H, Inagaki A, Tajima T, Fukagawa K, Okita K, Yasui K, Nanbu I, Anan C, Uematsu N, Katada E, Matsukawa N, Kabasawa H. Dopaminergic performances in patients with parkinsonism — A combination study of dopamine transporter SPECT, dopamine synthesis and receptor pet. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Aliyev V, Yasuchika K, Hammad A, Badawy A, Nigmet Y, Tajima T, Fukumitsu K, Yagi S, Hata K, Okajima H, Uemoto S. Coexistent End-stage Nonalcoholic Steatohepatitis and Colon Cancer: Should We Do Liver Transplantation? Transplant Proc 2017; 49:1649-1651. [PMID: 28838457 DOI: 10.1016/j.transproceed.2017.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 06/16/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Colon cancer accompanying decompensated liver cirrhosis is a rare clinical condition. Usually, treatment of colon cancer is prioritized, with cirrhosis dealt with later. CASE REPORT We present a case of end-stage liver disease due to nonalcoholic steatohepatitis evaluated for living donor liver transplant. During the pretransplant examination, an ascending colon cancer was detected. Liver function was too poor to perform colon resection first. Simultaneous living donor liver transplant and colonic resection were carried out. The patient developed left lung metastasis at 2 different times during the first postoperative year, and both of them were resected. The patient received the standard chemoradiotherapy. Now, the patient is alive at 42 months postprocedure and recurrence-free at 31 months postoperatively. CONCLUSION Simultaneous liver transplantation and colon resection are possible with acceptable long-term outcomes. Immunosuppressive therapy after transplantation increases the risk for cancer recurrence. So the patient should undergo close surveillance.
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Affiliation(s)
- V Aliyev
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - K Yasuchika
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Hammad
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Surgery, Mansoura University, Mansoura, Egypt
| | - A Badawy
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Surgery, Alexandria University, Alexandria, Egypt
| | - Y Nigmet
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Tajima
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Fukumitsu
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - S Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Hata
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - H Okajima
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - S Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Sekimoto T, Ishii M, Emi M, Kurogi S, Funamoto T, Yonezawa Y, Tajima T, Sakamoto T, Hamada H, Chosa E. Copy number loss in the region of the ASPN gene in patients with acetabular dysplasia: ASPN CNV in acetabular dysplasia. Bone Joint Res 2017; 6:439-445. [PMID: 28747338 PMCID: PMC5539304 DOI: 10.1302/2046-3758.67.bjr-2016-0094.r1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 05/15/2017] [Indexed: 11/25/2022] Open
Abstract
Objectives We have previously investigated an association between the genome copy number variation (CNV) and acetabular dysplasia (AD). Hip osteoarthritis is associated with a genetic polymorphism in the aspartic acid repeat in the N-terminal region of the asporin (ASPN) gene; therefore, the present study aimed to investigate whether the CNV of ASPN is involved in the pathogenesis of AD. Methods Acetabular coverage of all subjects was evaluated using radiological findings (Sharp angle, centre-edge (CE) angle, acetabular roof obliquity (ARO) angle, and minimum joint space width). Genomic DNA was extracted from peripheral blood leukocytes. Agilent’s region-targeted high-density oligonucleotide tiling microarray was used to analyse 64 female AD patients and 32 female control subjects. All statistical analyses were performed using EZR software (Fisher’s exact probability test, Pearson’s correlation test, and Student’s t-test). Results CNV analysis of the ASPN gene revealed a copy number loss in significantly more AD patients (9/64) than control subjects (0/32; p = 0.0212). This loss occurred within a 60 kb region on 9q22.31, which harbours the gene for ASPN. The mean radiological parameters of these AD patients were significantly worse than those of the other subjects (Sharp angle, p = 0.0056; CE angle, p = 0.0076; ARO angle, p = 0.0065), and all nine patients required operative therapy such as total hip arthroplasty or pelvic osteotomy. Moreover, six of these nine patients had a history of operative or conservative therapy for developmental dysplasia of the hip. Conclusions Copy number loss within the region harbouring the ASPN gene on 9q22.31 is associated with severe AD. A copy number loss in the ASPN gene region may play a role in the aetiology of severe AD. Cite this article: T. Sekimoto, M. Ishii, M. Emi, S. Kurogi, T. Funamoto, Y. Yonezawa, T. Tajima, T. Sakamoto, H. Hamada, E. Chosa. Copy number loss in the region of the ASPN gene in patients with acetabular dysplasia: ASPN CNV in acetabular dysplasia. Bone Joint Res 2017;6:439–445. DOI: 10.1302/2046-3758.67.BJR-2016-0094.R1.
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Affiliation(s)
- T Sekimoto
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - M Ishii
- CNV Laboratory, DNA Chip Research Institute, 1-15-1 Kaigan, Minatoku, Tokyo 105-0022, Japan
| | - M Emi
- Thoracic Oncology and Cancer Biology, University of Hawaii Cancer Center, 651 Ilalo Street, BSB231, Honolulu, HI 96813, USA
| | - S Kurogi
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - T Funamoto
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - Y Yonezawa
- Division of Data Management, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - T Tajima
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - T Sakamoto
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - H Hamada
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - E Chosa
- Department of Medicine of Sensory and Motor Organs, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
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Gota H, Tuszewski M, Trask E, Garate E, Binderbauer MW, Tajima T, Schmitz L, Deng BH, Guo HY, Aefsky S, Allfrey I, Barnes D, Bolte N, Bui DQ, Ceccherini F, Clary R, Conroy KD, Cordero M, Dettrick SA, Douglass JD, Feng P, Granstedt E, Gupta D, Gupta S, Hooper C, Kinley JS, Knapp K, Korepanov S, Longman A, Magee R, Mendoza R, Mok Y, Necas A, Primavera S, Putvinski S, Onofri M, Osin D, Rath N, Roche T, Romero J, Rostoker N, Schroeder JH, Sevier L, Sibley A, Smirnov A, Song Y, Steinhauer LC, Thompson MC, Valentine T, Van Drie AD, Walters JK, Waggoner W, Yang X, Yushmanov P, Zhai K. Improved Confinement of C-2 Field-Reversed Configuration Plasmas. Fusion Science and Technology 2017. [DOI: 10.13182/fst14-871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Gota
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Tuszewski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Trask
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Garate
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. W. Binderbauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Tajima
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. Schmitz
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
- University of California, Los Angeles, Department of Physics and Astronomy Los Angeles, California 90095
| | - B. H. Deng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - H. Y. Guo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Aefsky
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - I. Allfrey
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Barnes
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Bolte
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Q. Bui
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - F. Ceccherini
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Clary
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. D. Conroy
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Cordero
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. A. Dettrick
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. D. Douglass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - P. Feng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Granstedt
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - C. Hooper
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. S. Kinley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. Knapp
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Korepanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Longman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Magee
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Mendoza
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - Y. Mok
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Necas
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Primavera
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Putvinski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Onofri
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Osin
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Rath
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Roche
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. Romero
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Rostoker
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. H. Schroeder
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. Sevier
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Sibley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Smirnov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - Y. Song
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. C. Steinhauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. C. Thompson
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Valentine
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. D. Van Drie
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. K. Walters
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - W. Waggoner
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - X. Yang
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - P. Yushmanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. Zhai
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
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Kurniawan K, Tajima T, Kubo Y, Miyake H, Kurashige W, Negishi Y, Takaguchi Y. Incorporating a TiOx shell in single-walled carbon nanotube/fullerodendron coaxial nanowires: increasing the photocatalytic evolution of H2 from water under irradiation with visible light. RSC Adv 2017. [DOI: 10.1039/c7ra05412b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The SWCNT/fullerodendron/TiOx coaxial nanowire shows an enhanced photocatalytic activity (Φ = 0.47) for the evolution of hydrogen from water under irradiation with visible light (λ = 450 nm).
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Affiliation(s)
- K. Kurniawan
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
| | - T. Tajima
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
| | - Y. Kubo
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
| | - H. Miyake
- Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Ube
- Japan
| | - W. Kurashige
- Department of Applied Chemistry
- Faculty of Science Division I
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | - Y. Negishi
- Department of Applied Chemistry
- Faculty of Science Division I
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | - Y. Takaguchi
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
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Matsumoto T, Roche T, Allfrey I, Sekiguchi J, Asai T, Gota H, Cordero M, Garate E, Kinley J, Valentine T, Waggoner W, Binderbauer M, Tajima T. Characterization of compact-toroid injection during formation, translation, and field penetration. Rev Sci Instrum 2016; 87:11D406. [PMID: 27910693 DOI: 10.1063/1.4959571] [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: 06/06/2023]
Abstract
We have developed a compact toroid (CT) injector system for particle refueling of the advanced beam-driven C-2U field-reversed configuration (FRC) plasma. The CT injector is a magnetized coaxial plasma gun (MCPG), and the produced CT must cross the perpendicular magnetic field surrounding the FRC for the refueling of C-2U. To simulate this environment, an experimental test stand has been constructed. A transverse magnetic field of ∼1 kG is established, which is comparable to the C-2U axial magnetic field in the confinement section, and CTs are fired across it. On the test stand we have been characterizing and studying CT formation, ejection/translation from the MCPG, and penetration into transverse magnetic fields.
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Affiliation(s)
- T Matsumoto
- Nihon University, Chiyoda-ku, Tokyo 101-8308, Japan
| | - T Roche
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - I Allfrey
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - J Sekiguchi
- Nihon University, Chiyoda-ku, Tokyo 101-8308, Japan
| | - T Asai
- Nihon University, Chiyoda-ku, Tokyo 101-8308, Japan
| | - H Gota
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - M Cordero
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - E Garate
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - J Kinley
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - T Valentine
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - W Waggoner
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - M Binderbauer
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - T Tajima
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
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Tajima T, Wada T, Yoshizawa A, Masuda T, Okafuji T, Nakayama T, Hasuo K. Internal anomalies in thalidomide embryopathy: results of imaging screening by CT and MRI. Clin Radiol 2016; 71:1199.e1-7. [PMID: 27567725 DOI: 10.1016/j.crad.2016.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 06/09/2016] [Accepted: 07/25/2016] [Indexed: 11/29/2022]
Abstract
AIM To examine the prevalence and detailed radiological findings of internal anomalies in thalidomide embryopathy (TE). MATERIALS AND METHODS Whole-body image screening for internal anomalies using unenhanced whole-body computed tomography (CT) and head magnetic resonance imaging (MRI) was performed in 22 patients (13 women and nine men; mean age, 49 years; range, 47-51 years) with TE. RESULTS Among the 22 patients with TE, internal anomalies were detected in 19 (86.4%): anomalies of the auditory organ in 10 (45.5%), anomalies of the vascular system in six (27.3%), agenesis of the gallbladder in six (27.3%), hypoplasia or aplasia of the 7th or 8th cranial nerves in five (22.7%), block vertebrae in five (22.7%), fusion of the left lobe and quadrate lobe of the liver in three (9.1%), and others in five (22.7%), respectively. CONCLUSION In addition to limb defects or hypoplasia, various internal anomalies can be detected at a high incidence in TE using CT and MRI. Understanding these characteristic radiological findings may help radiologists detect a wide range of radiological findings of internal anomalies associated with TE.
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Affiliation(s)
- T Tajima
- Department of Diagnostic Radiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan.
| | - T Wada
- Department of Diagnostic Radiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - A Yoshizawa
- Department of General Internal Medicine, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - T Masuda
- Department of Diagnostic Radiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - T Okafuji
- Department of Diagnostic Radiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - T Nakayama
- Department of Diagnostic Radiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - K Hasuo
- Department of Diagnostic Radiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
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Matsumoto T, Sekiguchi J, Asai T, Gota H, Garate E, Allfrey I, Valentine T, Morehouse M, Roche T, Kinley J, Aefsky S, Cordero M, Waggoner W, Binderbauer M, Tajima T. Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device. Rev Sci Instrum 2016; 87:053512. [PMID: 27250428 DOI: 10.1063/1.4952581] [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: 06/05/2023]
Abstract
A compact toroid (CT) injector was developed for the C-2 device, primarily for refueling of field-reversed configurations. The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field. First, a plasma ring is generated by a discharge between the electrodes and is accelerated by Lorenz self-force. Then, the plasma ring is captured by an interlinkage flux (poloidal flux). Finally, the fully formed CT is ejected from the MCPG. The MCPG described herein has two gas injection ports that are arranged tangentially on the outer electrode. A tungsten-coated inner electrode has a head which can be replaced with a longer one to extend the length of the acceleration region for the CT. The developed MCPG has achieved supersonic CT velocities of ∼100 km/s. Plasma parameters for electron density, electron temperature, and the number of particles are ∼5 × 10(21) m(-3), ∼40 eV, and 0.5-1.0 × 10(19), respectively.
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Affiliation(s)
- T Matsumoto
- College of Science and Technology, Nihon University, 1-8-14 Kanda, Chiyoda-ku, Tokyo 1018308, Japan
| | - J Sekiguchi
- College of Science and Technology, Nihon University, 1-8-14 Kanda, Chiyoda-ku, Tokyo 1018308, Japan
| | - T Asai
- College of Science and Technology, Nihon University, 1-8-14 Kanda, Chiyoda-ku, Tokyo 1018308, Japan
| | - H Gota
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - E Garate
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - I Allfrey
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - T Valentine
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - M Morehouse
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - T Roche
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - J Kinley
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - S Aefsky
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - M Cordero
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - W Waggoner
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - M Binderbauer
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
| | - T Tajima
- Tri Alpha Energy, Inc., P.O. Box 7010 Rancho Santa Margarita, California 92688, USA
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Amano K, Maeda I, Morita T, Miura T, Inoue S, Ikenaga M, Matsumoto Y, Baba M, Sekine R, Yamaguchi T, Hirohashi T, Tajima T, Tatara R, Watanabe H, Otani H, Takigawa C, Matsuda Y, Nagaoka H, Mori M, Kinoshita H. 1510 Clinical implications of C-reactive protein as a prognostic marker in advanced cancer patients in palliative settings. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30600-1] [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: 11/16/2022]
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Kizaki K, Terada T, Arikawa H, Tajima T, Imai H, Takahashi T, Era S. Effect of reduced coenzyme Q10 (ubiquinol) supplementation on blood pressure and muscle damage during kendo training camp: a double-blind, randomized controlled study. J Sports Med Phys Fitness 2015; 55:797-804. [PMID: 25369277] [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: 06/04/2023]
Abstract
AIM This randomized controlled study was designed to examine the effects of reduced coenzyme Q10 (ubiquinol; CoQ10) supplementation on blood pressure (BP) and exercise-induced muscle damage in kendo athletes during a 4-day kendo training camp. METHODS In a double-blinded manner, 32 young kendo athletes were randomly assigned to supplement with either placebo or CoQ10 (600 mg) daily for 11 days from 1 week prior to camp to end of camp. BP was measured every morning after waking up during the training camp. Blood samples were taken at 3 time points; 1 week and 1 day prior and upon completion of training camp at 17:30. Statistical analysis was performed by repeated-measures analysis of variance followed by Bonferroni/Dunn post-hoc tests. RESULTS Before the training camp started, there were no differences in diastolic BP between these groups. However, after kendo training started, diastolic BP in the CoQ10 group was significantly lower than that in the placebo group (P<0.05). Plasma creatine kinase (CK) and myoglobin (Mb) concentrations were significantly increased in both groups during the camp (P<0.05), whereas there were no significant differences in CK and Mb between CoQ10 and placebo groups (CK: P=0.82, Mb: P=0.69). CONCLUSION Oral supplementation with reduced form of CoQ10 (ubiquinol; Kaneka QHTM) showed a significant hypotensive effect in young male kendo athletes during a 4-day kendo training camp, although it did not significantly ameliorate kendo exercise-induced muscle damage.
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Affiliation(s)
- K Kizaki
- Department of Physiology and Biophysics, Gifu University Graduate School of Medicine, Gifu, Japan -
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36
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Guo HY, Binderbauer MW, Tajima T, Milroy RD, Steinhauer LC, Yang X, Garate EG, Gota H, Korepanov S, Necas A, Roche T, Smirnov A, Trask E. Achieving a long-lived high-beta plasma state by energetic beam injection. Nat Commun 2015; 6:6897. [DOI: 10.1038/ncomms7897] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 03/11/2015] [Indexed: 11/09/2022] Open
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Morita S, Tajima T, Yamazaki H, Sonoyama Y, Nishina Y, Kenji O, Takagi T, Kondo T, Tanabe K, Sakai S. Screening of renal artery pseudoaneurysms by early postoperative contrast-enhanced computed tomography in patients without renal impairment after partial nephrectomy and prophylactic embolization. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Schmitz L, Ruskov E, Deng BH, Gota H, Gupta D, Tuszewski M, Douglass J, Peebles WA, Binderbauer M, Tajima T. Multi-channel Doppler backscattering measurements in the C-2 field reversed configuration. Rev Sci Instrum 2014; 85:11D840. [PMID: 25430253 DOI: 10.1063/1.4891415] [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] [Indexed: 06/04/2023]
Abstract
A versatile heterodyne Doppler Backscattering (DBS) system is used to measure density fluctuation levels (in the wavenumber range kρs ≤ 50), and the toroidal E × B flow velocity in the C-2 Field-Reversed Configuration (FRC). Six tunable frequencies in three waveguide bands (26 GHz ≤ f ≤ 90 GHz) are launched using monostatic beam optics, via a quasi-optical beam combiner/polarizer and an adjustable parabolic focusing mirror (inside the vacuum enclosure) achieving Gaussian beam spot sizes of 3-5.5 cm at the X/O-mode cutoff. The DBS system covers plasma densities of 0.8 × 10(13) ≤ ne ≤ 1 × 10(14) cm(-3), and provides access to the FRC core (up to the field null) and across the FRC separatrix into the scrape-off layer plasma.
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Affiliation(s)
- L Schmitz
- Department of Physics & Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - E Ruskov
- Department of Physics & Astronomy, University of California, Irvine, Irvine, California 92697, USA
| | - B H Deng
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - H Gota
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - D Gupta
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - M Tuszewski
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - J Douglass
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - W A Peebles
- Department of Physics & Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - M Binderbauer
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - T Tajima
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
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Murakami H, Seto T, Takahashi T, Horiike A, Hirai F, Suenaga N, Tajima T, Tokushige K, Boral A, Robson M, Nishio M. Phase I Study for Ceritinib (Ldk378) in Japanese Patients with Alk Genetic Alterations. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.73] [Citation(s) in RCA: 2] [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: 11/14/2022] Open
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40
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Tajima T, Chosa E, Kawahara K, Nakamura Y, Yoshikawa D, Yamaguchi N, Kashiwagi T. Comprehensive safety management and assessment at rugby football competitions. Int J Sports Med 2014; 35:1012-6. [PMID: 24838268 DOI: 10.1055/s-0034-1372634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The present study aims to improve medical systems by designing objective safety assessment criteria for rugby competitions. We evaluated 195 competitions between 2002 and 2011 using an original safety scale comprising the following sections: 1) competence of staff such as referees, medical attendants and match day doctor; 2) environment such as weather, wet bulb globe temperature and field conditions; and 3) emergency medical care systems at the competitions. Each section was subdivided into groups A, B and C according to good, normal or fair degrees of safety determined by combinations of the results.Overall safety was assessed as A, B and C for 110, 78 and 7 competitions, respectively. The assessments of individual major factors were mostly favorable for staff, but the environment and medical care systems were assessed as C in 25 and 70, respectively, of the 195 competitions. Medical management involves not having a match day doctor, but also comprehensive management including preventive factors and responses from the staff, environment and medical-care systems. 6 cases of severe injuries and accidents occurred between 2002 and 2011, which were observed in Grade A competition. These cases revealed better prognosis without obvious impairment, thus confirming the value of the present assessment scale.
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Affiliation(s)
- T Tajima
- Department of Medicine of Sensory and Motor Organs, Division of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - E Chosa
- Department of Medicine of Sensory and Motor Organs, Division of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - K Kawahara
- Department of Medicine of Sensory and Motor Organs, Division of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Y Nakamura
- Department of Medicine of Sensory and Motor Organs, Division of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - D Yoshikawa
- Department of Medicine of Sensory and Motor Organs, Division of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - N Yamaguchi
- Department of Medicine of Sensory and Motor Organs, Division of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - T Kashiwagi
- Department of Orthopaedic Surgery, Tachibana Hospital, Miyazaki, Japan
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Kurita K, Tajima T, Ogi N, Yuasa H, Fukuta K. Mouth-opening exercise-based treatment algorithm for temporomandibular joint pain and trismus caused by disk displacement without reduction. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Stora C, Devouche E, Delaroche L, Patrat C, Matheron S, Damond F, Yazbeck C, Longuet P, Llabador MA, Luton D, Epelboin S, Lemmen J, Rasmussen S, Ziebe S, El Khattabi L, Hafhouf E, Royere D, Pouly JL, De Mouzon J, Levy R, Hagman A, Loft A, Wennerholm UB, Pinborg A, Bergh C, Aittomaki K, Nygren KG, Romundstad LB, Hazekamp J, Soderstrom-Anttila V, Mukaida T, Goto T, Tajima T, Oka C, Takahashi K, Carrasco B, Boada M, Rodriguez I, Coroleu B, Barri PN, Veiga A, Wennerholm UB, Henningsen AKA, Romundstad LB, Bergh C, Pinborg A, Skjaerven R, Forman J, Gissler M, Nygren KG, Tiitinen A. Session 60: Perinatal outcome after ART. Hum Reprod 2013. [DOI: 10.1093/humrep/det193] [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: 11/12/2022] Open
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43
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Gota H, Tuszewski M, Smirnov A, Korepanov S, Akhmetov T, Ivanov A, Voskoboynikov R, Binderbauer MW, Guo HY, Barnes D, Aefsky S, Brown R, Bui DQ, Clary R, Conroy KD, Deng BH, Dettrick SA, Douglass JD, Garate E, Glass FJ, Gupta D, Gupta S, Kinley JS, Knapp K, Hollins M, Longman A, Li XL, Luo Y, Mendoza R, Mok Y, Necas A, Primavera S, Osin D, Rostoker N, Ruskov E, Schmitz L, Schroeder JH, Sevier L, Sibley A, Song Y, Sun X, Tajima T, Thompson MC, Trask E, Van Drie AD, Walters JK, Wyman MD, Zhai K. A High Performance Field-Reversed Configuration Regime in the C-2 Device. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Gota
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. Tuszewski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Smirnov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Korepanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - T. Akhmetov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - A. Ivanov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - R. Voskoboynikov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - M. W. Binderbauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - H. Y. Guo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Barnes
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Aefsky
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Brown
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Q. Bui
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Clary
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. D. Conroy
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - B. H. Deng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. A. Dettrick
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. D. Douglass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Garate
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - F. J. Glass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. S. Kinley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. Knapp
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. Hollins
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Longman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - X. L. Li
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Luo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Mendoza
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Mok
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Necas
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Primavera
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Osin
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - N. Rostoker
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Ruskov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - L. Schmitz
- Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA
| | - J. H. Schroeder
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - L. Sevier
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Sibley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Song
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - X. Sun
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - T. Tajima
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. C. Thompson
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Trask
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. D. Van Drie
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. K. Walters
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. D. Wyman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. Zhai
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
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Okusaka T, Ito T, Ikeda M, Igarashi H, Morizane C, Nakachi K, Tajima T, Kasuga A, Fujita Y, Furuse J. Phase III Trial of Everolimus in Advanced Pancreatic Neuroendocrine Tumors (RADIANT-3): Overall Population and Japanese Subgroup Analysis. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)31952-9] [Citation(s) in RCA: 2] [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: 11/17/2022] Open
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45
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Mukaida T, Goto T, Tajima T, Oka C, Takahashi K. Perinatal outcome of children born after vitrification of blastocysts (6467 cycles with 2059 babies in 12 years experiences). Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.231] [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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46
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Kiriyama H, Shimomura T, Sasao H, Nakai Y, Tanoue M, Kondo S, Kanazawa S, Pirozhkov AS, Mori M, Fukuda Y, Nishiuchi M, Kando M, Bulanov SV, Nagashima K, Yamagiwa M, Kondo K, Sugiyama A, Bolton PR, Tajima T, Miyanaga N. Temporal contrast enhancement of petawatt-class laser pulses. Opt Lett 2012; 37:3363-3365. [PMID: 23381258 DOI: 10.1364/ol.37.003363] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate the temporal contrast enhancement in a petawatt-class Ti:sapphire chirped-pulse amplification (CPA) laser system. An extra saturable absorber, introduced downstream after a low-gain optical parametric chirped-pulse amplification (OPCPA) preamplifier, has improved the temporal contrast in the system to 1.4×10(12) on the subnanosecond time scale at 70 TW power level. We have achieved 28 J of uncompressed broadband output energy with this system, indicating the potential for reaching peak powers near 600 TW.
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Affiliation(s)
- Hiromitsu Kiriyama
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan.
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47
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Camou S, Haga T, Tajima T, Tamechika E. Detection of aqueous glucose based on a cavity size- and optical-wavelength-independent continuous-wave photoacoustic technique. Anal Chem 2012; 84:4718-24. [PMID: 22548281 DOI: 10.1021/ac203331w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Toward the achievement of noninvasive and continuous monitoring of blood glucose level, we developed a new measurement method based on the continuous-wave photoacoustic (CW-PA) technique and performed the first validation in vitro with calibrated aqueous glucose solutions. The PA technique has been studied in the past but exclusively based on the pulse setup since the CW one exhibits dependence on the cavity dimensions, which is not compatible with the final application requirements. This paper describes a new strategy relying on the monitoring of the resonant-frequency relative shift induced by the change of glucose concentrations rather than amplitude signal levels at a fixed frequency. From in vitro results, we demonstrate a stable and reproducible response to glucose at various cavity dimensions and optical wavelengths, with a slope of 0.19 ±0.01%/g/dL. From theoretical considerations, this method is consistent with a relative acoustic velocity measurement, which also explains the aforementioned stability. The proposed method then resolves most of the issues usually associated with the CW-PA technique and makes it a potential alternative for the noninvasive and continuous monitoring of glycemia levels. However, experimental determination of sensor responses to albumin and temperature as two potential interferents shows similar levels, which points to the selectivity to glucose as a major issue we should deal with in future development.
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Affiliation(s)
- S Camou
- Microsystem Integration Laboratories, Microsensor Research Group, NTT Corp., Atsugi, Japan.
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48
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Pirozhkov AS, Kando M, Esirkepov TZ, Gallegos P, Ahmed H, Ragozin EN, Faenov AY, Pikuz TA, Kawachi T, Sagisaka A, Koga JK, Coury M, Green J, Foster P, Brenner C, Dromey B, Symes DR, Mori M, Kawase K, Kameshima T, Fukuda Y, Chen L, Daito I, Ogura K, Hayashi Y, Kotaki H, Kiriyama H, Okada H, Nishimori N, Imazono T, Kondo K, Kimura T, Tajima T, Daido H, Rajeev P, McKenna P, Borghesi M, Neely D, Kato Y, Bulanov SV. Soft-x-ray harmonic comb from relativistic electron spikes. Phys Rev Lett 2012; 108:135004. [PMID: 22540709 DOI: 10.1103/physrevlett.108.135004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Indexed: 05/31/2023]
Abstract
We demonstrate a new high-order harmonic generation mechanism reaching the "water window" spectral region in experiments with multiterawatt femtosecond lasers irradiating gas jets. A few hundred harmonic orders are resolved, giving μJ/sr pulses. Harmonics are collectively emitted by an oscillating electron spike formed at the joint of the boundaries of a cavity and bow wave created by a relativistically self-focusing laser in underdense plasma. The spike sharpness and stability are explained by catastrophe theory. The mechanism is corroborated by particle-in-cell simulations.
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Affiliation(s)
- A S Pirozhkov
- Advanced Beam Technology Division, JAEA, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
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49
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Tajima T, Haberkorn NF, Civale L, Schulze RK, Inoue H, Guo J, Dolgashev VA, Martin D, Tantawi S, Yoneda C, Moeckly B, Yung C, Proslier T, Pellin M, Matsumoto A, Watanabe E. Studies on thin film MgB2 for applications to RF structures for particle accelerators. ACTA ACUST UNITED AC 2012. [DOI: 10.1063/1.4712109] [Citation(s) in RCA: 7] [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: 11/14/2022]
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50
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Jung D, Yin L, Albright BJ, Gautier DC, Hörlein R, Kiefer D, Henig A, Johnson R, Letzring S, Palaniyappan S, Shah R, Shimada T, Yan XQ, Bowers KJ, Tajima T, Fernández JC, Habs D, Hegelich BM. Monoenergetic ion beam generation by driving ion solitary waves with circularly polarized laser light. Phys Rev Lett 2011; 107:115002. [PMID: 22026679 DOI: 10.1103/physrevlett.107.115002] [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] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Indexed: 05/31/2023]
Abstract
Experimental data from the Trident Laser facility is presented showing quasimonoenergetic carbon ions from nm-scaled foil targets with an energy spread of as low as ±15% at 35 MeV. These results and high-resolution kinetic simulations show laser acceleration of quasimonoenergetic ion beams by the generation of ion solitons with circularly polarized laser pulses (500 fs, λ=1054 nm). The conversion efficiency into monoenergetic ions is increased by an order of magnitude compared with previous experimental results, representing an important step towards applications such as ion fast ignition.
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Affiliation(s)
- D Jung
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
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