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Takeda A, Murayama K, Okazaki Y, Imai-Okazaki A, Ohtake A, Takakuwa E, Yamazawa H, Izumi G, Abe J, Nagai A, Taniguchi K, Sasaki D, Tsujioka T, Basgen J. Advanced pathologic study for definite diagnosis of mitochondrial cardiomyopathy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Mitochondrial cardiomyopathy (MCM) is usually recognized as one of the phenotypes of systemic mitochondrial disease. However if there are no cardiac symptoms, it is difficult to make a definite diagnosis because of various cardiovascular phenotypes and no diagnostic criteria in pathological examination. To add myocardial pathology to the diagnostic criteria for mitochondrial respiratory chain disorders, which is the gold standard in the diagnosis of mitochondrial diseases, we performed quantitative analysis of mitochondria using electron microscopy and immunohistopathologic analysis with respiratory chain enzyme antibodies. Ten patients with hypertrophic or restrictive cardiomyopathy who had undergone endomyocardial biopsy were studied. Respiratory chain enzymatic assay and genetic study were performed and four patients were diagnosed with MCM. Using electron microscopy with quantitative analysis, volume density of mitochondria within cardiac muscle cells was significantly increased in the MCM group compared to the non-MCM group (p=0.013). Immunohistopathologic results were compatible with the result of the respiratory chain enzymatic assay. These advanced pathological tests can distinguish MCM from other cardiomyopathies.
Results of immunopathologic study
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): The Practical Research Project for Rare/Intractable Diseases from the Japan Agency for Medical Research and Development, AMED.
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Affiliation(s)
- A Takeda
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - K Murayama
- Chiba Children's Hospital, Department of Metabolism, Chiba, Japan
| | - Y Okazaki
- Juntendo University Graduate School of Medicine, Intractable Disease Research Center, Tokyo, Japan
| | - A Imai-Okazaki
- Juntendo University Graduate School of Medicine, Intractable Disease Research Center, Tokyo, Japan
| | - A Ohtake
- Saitama Medical University, Department of Paediatrics, Saitama, Japan
| | - E Takakuwa
- Hokkaido University, Department of Surgical Pathology, Sapporo, Japan
| | - H Yamazawa
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - G Izumi
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - J Abe
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - A Nagai
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - K Taniguchi
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - D Sasaki
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - T Tsujioka
- Hokkaido University, Department of Paediatrics, Sapporo, Japan
| | - J Basgen
- Charles R. Drew University of Science and Medicine, Department of Research, Los Angeles, United States of America
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2
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Mostafa A, Yamazawa H, Uosif M, Moriizumi J. Seasonal behavior of radon decay products in indoor air and resulting radiation dose to human respiratory tract. Journal of Radiation Research and Applied Sciences 2019. [DOI: 10.1016/j.jrras.2014.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A.M.A. Mostafa
- Physics Department, Faculty of Science, Al-Azhar University, Assiut Brunch, Assiut, 71542, Egypt
| | - H. Yamazawa
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - M.A.M. Uosif
- Physics Department, Faculty of Science, Al-Azhar University, Assiut Brunch, Assiut, 71542, Egypt
| | - J. Moriizumi
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
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3
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Aikawa T, Takeda A, Oyama-Manabe N, Naya M, Yamazawa H, Koyanagawa K, Ito YM, Anzai T. P1561Prophylactic use of angiotensin converting enzyme inhibitor in patients with duchenne and becker muscular dystrophy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Aikawa
- Hokkaido University Hospital, Department of Cardiovascular Medicine, Sapporo, Japan
| | - A Takeda
- Hokkaido University Hospital, Department of Pediatrics, Sapporo, Japan
| | - N Oyama-Manabe
- Hokkaido University Hospital, Diagnostic and Interventional Radiology, Sapporo, Japan
| | - M Naya
- Hokkaido University Hospital, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Yamazawa
- Hokkaido University Hospital, Department of Pediatrics, Sapporo, Japan
| | - K Koyanagawa
- Hokkaido University Hospital, Department of Cardiovascular Medicine, Sapporo, Japan
| | - Y M Ito
- Hokkaido University, Department of Biostatistics, Sapporo, Japan
| | - T Anzai
- Hokkaido University Hospital, Department of Cardiovascular Medicine, Sapporo, Japan
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4
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Affiliation(s)
- H. Yamazawa
- Department of Energy Engineering and Science, Nagoya University: Furo-cho, Chikusa-ku, Nagoya, Japan 464-8603
| | - M. Ota
- Department of Energy Engineering and Science, Nagoya University: Furo-cho, Chikusa-ku, Nagoya, Japan 464-8603
| | - J. Moriizumi
- Department of Energy Engineering and Science, Nagoya University: Furo-cho, Chikusa-ku, Nagoya, Japan 464-8603
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5
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Hirouchi J, Terasaka Y, Hirao S, Moriizumi J, Yamazawa H. Effect on radioactivity concentration estimation of radon progenies with NaI(Tl) pulse height distribution from considering geometric structure around detector and infiltration of radionuclides. Radiat Prot Dosimetry 2015; 167:206-209. [PMID: 25935009 DOI: 10.1093/rpd/ncv245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The surface radioactivity concentrations of the radon progenies, (214)Pb and (214)Bi, were estimated from NaI(Tl) pulse height distributions during rain. The improvement in estimation errors caused by considering geometric structures around measuring points and infiltration of radionuclides was discussed. The surface radioactivity concentrations were determined by comparing the count rates at the full-energy peak ranges between observation and calculation with the electron-photon transport code EGS5. It was shown that the concentrations can be underestimated by about 30 % unless the obstacles around the detector or infiltration of radionuclides are considered in gamma ray transfer calculations at measuring points, where there are many tall obstacles, or the ground is covered with unpaved areas.
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Affiliation(s)
- J Hirouchi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Y Terasaka
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - S Hirao
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - J Moriizumi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - H Yamazawa
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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6
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Yajima K, Hirao S, Moriizumi J, Yamazawa H. Quantitative evaluation of 218Po behaviour in air in an artificial environment. Radiat Prot Dosimetry 2015; 167:130-134. [PMID: 25920782 DOI: 10.1093/rpd/ncv229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Experiments were carried out in a small enclosed booth for the purpose of understanding and modelling (218)Po behaviour. The experiment was conducted under two kinds of conditions without and with injection of incense smoke. A working model of (218)Po behaviour was applied to analyse the measured data. Under the condition without incense smoke, temporal changes in aerosol-attached and unattached (218)Po concentrations were successfully reproduced by the model. The deposition rate of unattached fraction and the rate of attachment were determined by the working model. Under the condition with incense smoke, temporal changes in (218)Po concentration were poorly simulated by the model. This can be attributed to the significantly increased aerosol concentration in small size ranges which is not properly considered in the attachment rate calculation in the model.
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Affiliation(s)
- K Yajima
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - S Hirao
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - J Moriizumi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - H Yamazawa
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Yamazawa H, Yamada S, Xu Y, Hirao S, Moriizumi J. An experimental method for quantitatively evaluating the elemental processes of indoor radioactive aerosol behavior. Radiat Prot Dosimetry 2015; 167:171-175. [PMID: 25935006 DOI: 10.1093/rpd/ncv238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An experimental method for quantitatively evaluating the elemental processes governing the indoor behaviour of naturally occurring radioactive aerosols was proposed. This method utilises transient response of aerosol concentrations to an artificial change in aerosol removal rate by turning on and off an air purifier. It was shown that the indoor-outdoor exchange rate and the indoor deposition rate could be estimated by a continuous measurement of outdoor and indoor aerosol number concentration measurements and by the method proposed in this study. Although the scatter of the estimated parameters is relatively large, both the methods gave consistent results. It was also found that the size distribution of radioactive aerosol particles and hence activity median aerodynamic diameter remained not largely affected by the operation of the air purifier, implying the predominance of the exchange and deposition processes over other processes causing change in the size distribution such as the size growth by coagulation and the size dependence of deposition.
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Affiliation(s)
- H Yamazawa
- Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - S Yamada
- Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Y Xu
- Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - S Hirao
- Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - J Moriizumi
- Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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8
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Hirao S, Hayashi R, Moriizumi J, Yamazawa H, Tohjima Y, Mukai H. Inverse estimation of radon flux distribution for East Asia using measured atmospheric radon concentration. Radiat Prot Dosimetry 2015; 167:97-101. [PMID: 25904695 DOI: 10.1093/rpd/ncv211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, the (222)Rn flux density distribution at surface was estimated in East Asia with the Bayesian synthesis inversion using measurement data and a long-range atmospheric (222)Rn transport model. Surface atmospheric (222)Rn concentrations measured at Hateruma Island in January 2008 were used. The estimated (222)Rn flux densities were generally higher than the prior ones. The area-weighted mean (222)Rn flux density for East Asia in January 2008 was estimated to be 44.0 mBq m(-2) s(-1). The use of the estimated (222)Rn flux density improved the discrepancy of the model-calculated concentrations with the measurements at Hateruma Island.
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Affiliation(s)
- S Hirao
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusaku, Nagoya 464-8603, Japan
| | - R Hayashi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusaku, Nagoya 464-8603, Japan
| | - J Moriizumi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusaku, Nagoya 464-8603, Japan
| | - H Yamazawa
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusaku, Nagoya 464-8603, Japan
| | - Y Tohjima
- Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - H Mukai
- Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
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9
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Hirouchi J, Yamazawa H, Hirao S, Moriizumi J. Estimation of surface anthropogenic radioactivity concentrations from NaI(Tl) pulse-height distribution observed at monitoring station. Radiat Prot Dosimetry 2015; 164:304-315. [PMID: 25313172 DOI: 10.1093/rpd/ncu305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 09/06/2014] [Indexed: 06/04/2023]
Abstract
A method of estimating surface radioactivity concentrations of key anthropogenic radionuclides from NaI(Tl) pulse-height distribution observed at a monitoring station (MS) was discussed. In the estimation, a realistic assumption on geometric distribution of source and obstacles around the detector of the MS including the infiltration of radionuclides into the ground was used and the results were compared with ones with a commonly used assumption of a uniformly distributed plane source. The surface radioactivity concentration was determined by comparing the count rates at the full-energy peak ranges between observation and calculation with an electron-photon transport code EGS5. It was shown that the estimated absolute values of concentration differed by a factor of ∼1.5 depending on the assumption of infiltration depth. The estimated surface concentrations of (131)I, (134)Cs and (137)Cs were in good agreement with ones determined by the in situ measurements with an HPGe detector and the cumulative values of daily surface depositions.
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Affiliation(s)
- J Hirouchi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - H Yamazawa
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - S Hirao
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - J Moriizumi
- Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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10
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Mostafa AMA, Tamaki K, Moriizumi J, Yamazawa H, Iida T. The weather dependence of particle size distribution of indoor radioactive aerosol associated with radon decay products. Radiat Prot Dosimetry 2011; 146:19-22. [PMID: 21521771 DOI: 10.1093/rpd/ncr097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This study was performed to measure the activity size distribution of aerosol particles associated with short-lived radon decay products in indoor air at Nagoya University, Nagoya, Japan. The measurements were performed using a low pressure Andersen cascade impactor under variable meteorological conditions. The results showed that the greatest activity fraction was associated with aerosol particles in the accumulation size range (100-1000 nm) with a small fraction of nucleation mode (10-100 nm). Regarding the influence of the weather conditions, the decrease in the number of accumulation particles was observed clearly after rainfall without significant change in nucleation particles, which may be due to a washout process for the large particles.
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Affiliation(s)
- A M A Mostafa
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
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11
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Agematsu K, Aoki M, Naito Y, Inuzuka R, Yamazawa H, Sugamoto K, Nakajima H, Fujiwara T. [Short-term outcome of extracardiac lateral tunnel using the atrial free wall and autologous pericardium]. Kyobu Geka 2008; 61:741-747. [PMID: 18697453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND Several modifications to the original Fontan procedure have been proposed in order to decrease postoperative morbidity. Lateral tunnel and extracardiac total cavo-pulmonary connection are 2 such modifications. PATIENTS Between August 2005 and December 2005, the extracardiac lateral tunnel procedure was performed in 5 patients. The age at operation ranged from 19 to 59 months (median 24 months) and the weight ranged from 9.2 to 16.1 kg (median 11.4 kg). RESULTS There was no mortality. The mean operation time was 466 +/-118 minutes. The mean cardiopulmonary bypass time was 198 +/- 61 minutes. The mean durations of intubation, intensive care unit stay, drainage tube use, and hospital stay were 1 +/- 1, 7 +/- 3, 12 +/- 5 and 30 +/- 2 days, respectively. Postoperative catheterization findings demonstrated that the mean superior venous caval pressure, inferior venous caval pressure, ventricular volume and ventricular ejection fraction were 10.0 +/- 1.4 mmHg, 11.0 +/- 2.4 mmHg, 140 +/- 47% of normal and 58.0 +/- 6.8% , respectively. CONCLUSIONS The short-term results of the extracardiac lateral tunnel compared favorably with the results of different types of Fontan operation. In addition this procedure has the potential for growth and anticoagulation therapy is unnecessary.
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Affiliation(s)
- K Agematsu
- Department of Cardiovascular Surgery, Chiba Children's Hospital, Chiba, Japan
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12
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Murakami T, Ueno M, Takeda A, Yakuwa S, Yamazawa H, Murashita T, Imamura M, Konishi T. [Fontan completion after balloon angioplasty of multiple pulmonary artery stenosis in a child with pulmonary atresia with intact ventricular septum; report of a case]. Kyobu Geka 2006; 59:157-9. [PMID: 16482913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A 5-year-old boy was referred to our institute for cardiac evaluation having been previously seen at another center. He had been diagnosed a pulmonary atresia with intact ventricular septum just after birth, and undergone Blalock-Taussig shunts. Although his central pulmonary artery pressure was high (mean pressure 26 mmHg) after bilateral Blalock-Taussig shunts, multiple peripheral pulmonary artery stenosis protected his pulmonary vascular bed from pressure load. We released the multiple pulmonary artery stenosis partly by catheter intervention and partly by surgical operation, and staged Fontan operation was completed. The surgery in combination with catheter therapies would expand the indication of Fontan-type operation, and it would contribute to the patients' postoperative prognosis.
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Affiliation(s)
- Tomoaki Murakami
- Department of Pediatrics, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
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13
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Iskandar D, Iida T, Yamazawa H, Moriizumi J, Koarashi J, Yamasoto K, Yamasaki K, Shimo M, Tsujimoto T, Ishikawa S, Fukuda M, Kojima H. The transport mechanisms of 222Rn in soil at Tateishi as an anomaly spot in Japan. Appl Radiat Isot 2005; 63:401-8. [PMID: 15950479 DOI: 10.1016/j.apradiso.2005.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2004] [Revised: 02/17/2005] [Accepted: 03/29/2005] [Indexed: 10/25/2022]
Abstract
The (222)Rn concentration profiles in soil have been measured at an anomaly spot in Tateishi, Japan. In winter, the concentrations were low and showed a negative gradient with depth, but in other seasons, the concentration had both positive and negative gradients with depth, and dramatically changed by time. On the assumption that there was ventilation in deep layers and with driving forces of wind and temperatures, these phenomena were successfully explained. This finding would contribute to a numerical model for (222)Rn transport in soil.
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Affiliation(s)
- D Iskandar
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
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14
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Belot Y, Watkins BM, Edlund O, Galeriu D, Guinois G, Golubev AV, Meurville C, Raskob W, Täschner M, Yamazawa H. Upward movement of tritium from contaminated groundwaters: a numerical analysis. J Environ Radioact 2005; 84:259-70. [PMID: 15990205 DOI: 10.1016/j.jenvrad.2004.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2002] [Revised: 07/16/2004] [Accepted: 07/19/2004] [Indexed: 05/03/2023]
Abstract
This paper describes a research-oriented modelling exercise that addresses the problem of assessing the movement of tritium from a contaminated perched aquifer to the land surface. Participants were provided with information on water table depth, soil characteristics, hourly meteorological and evapotranspiration data. They were asked to predict the upward migration of tritium through the unsaturated soil into the atmosphere. Eight different numerical models were used to calculate the movement of tritium. The modelling results agree within a factor of two, if very small time and space increments are used. The agreement is not so good when the near-surface soil becomes dry. The modelling of the alternate upward and downward transport of tritium close to the ground surface generally requires rather complex models and detailed input because tritium concentration varies sharply over short distances and is very sensitive to many interactive factors including rainfall amount, evapotranspiration rate, rooting depth and water table position.
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Affiliation(s)
- Y Belot
- Environment Consultant, 40 rue du Mont Valerien, 92210 Saint Cloud, France.
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Yamazawa H, Nakajima N, Wakamura S, Arakaki N, Yamamoto M, Ando T. Synthesis and characterization of diepoxyalkenes derived from (3Z,6Z,9Z)-trienes: lymantriid sex pheromones and their candidates. J Chem Ecol 2001; 27:2153-67. [PMID: 11817072 DOI: 10.1023/a:1012255201380] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
All stereoisomers of three diepoxyalkenes derived from (3Z,6Z,9Z)-trienes with a C21, C19, or C18 straight chain, lymantriid sex pheromones and their candidates, were synthesized by MCPBA oxidation of optically active epoxyalkadienes. Their chromatographic behaviors were examined with GC and LC equipped with achiral and chiral columns. Detailed inspection of the mass spectra of these epoxides indicated the following diagnostic ions for determining the chemical structures: m/z 128, 167, M-87 and M-85 for (Z)-cis-3,4-cis-6,7-diepoxy-9-enes; m/z 111, M-125 and M-69 for (Z)-cis-6,7-cis-9,10-diepoxy-3-enes; and m/z M-125 and M-139 for (Z)-cis-3,4-cis-9,10-diepoxy-6-enes. Mass chromatographic analysis that monitored these fragment ions revealed the existence of a new pheromonal compound with a C21 chain in an extract from virgin females of a lymantriid species, Perina nuda F. The three diepoxyalkenes were converted into the corresponding DMDS adducts, which showed characteristic ions from fragmentation between the two thiomethyl groups, reflecting the position of an original double bond.
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Affiliation(s)
- H Yamazawa
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
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18
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Yamamoto M, Takeuchi Y, Ohmasa Y, Yamazawa H, Ando T. Chiral HPLC resolution of monoepoxides derived from 6,9-dienes and its application to stereochemistry assignment of fruit-piercing noctuid pheromone. Biomed Chromatogr 1999; 13:410-7. [PMID: 10477899 DOI: 10.1002/(sici)1099-0801(199910)13:6<410::aid-bmc902>3.0.co;2-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The resolution of insect pheromonal cis-monoepoxy racemates derived from (Z,Z)-6,9-dienes was examined employing chiral HPLC columns, and the results showed that a normal-phase column (Chiralpak AD) was suitable for both 6,7- and 9,10-epoxides with a C(17)-C(23) straight chain, as was a reversed-phase column (Chiralcel OJ-R) for the 6, 7-epoxides. To determine the absolute configuration of each separated enantiomer applying a modified Mosher's method, the epoxy ring was opened by methanolysis, and the (1)H-NMR data of (S)- and (R)-MTPA esters of the methoxyalcohols produced were analyzed. Further, the hydrogenated product of each enantiomer was chromatographed on the OJ-R column referring to the corresponding authentic chiral compounds with a saturated chain, which were prepared by a Sharpless epoxidation reaction. These analyses showed that the levorotatory 6,7- and 9,10-epoxides with shorter t(R)s possess 6S,7R and 9R,10S configuration, respectively, and the dextrorotatory enantiomers with longer t(R)s possess the opposite configuration. Utilizing this chiral HPLC, it was revealed that an abdominal tip extract of the fruit-piercing moth, Oraesia excavata Butler (Lepidoptera: Noctuidae), included (9S,10R)-(Z)-9, 10-epoxy-6-henicosene as a main sex pheromone component. The synthetic 9,10-epoxide with this configuration, which was separated from the racemate, exhibited stronger activity in electrophysiological and field tests against male moths than the enantiomer.
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Affiliation(s)
- M Yamamoto
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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Chino M, Yamazawa H. Development of an atmospheric 222Rn concentration model using a hydrodynamic meteorological model: II. Three-dimensional research-purpose model. Health Phys 1996; 70:55-63. [PMID: 7499153 DOI: 10.1097/00004032-199601000-00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This paper describes a new type of three-dimensional numerical model for 222Rn transport in an atmospheric boundary layer. The model is a combination of a prognostic hydrodynamic meteorological model including a turbulence closure model and an atmospheric diffusion model for 222Rn. The first part provides the second part with the meteorological conditions needed for calculations of the 222Rn transport and diffusion. The model is capable of giving consideration to horizontal source distribution, complex terrain, and non-uniform and non-steady atmosphere. The model's results were compared with 222Rn field measurements in a mountain-valley area and represented qualitatively a typical diurnal variation of the 222Rn concentration in nocturnal drainage flows. The model was also applied to the transport of 222Rn in a seacoast area. These results indicated that the model could be effective as a research tool for numerical analysis of 222Rn behavior under various atmospheric conditions.
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Affiliation(s)
- M Chino
- Department of Environmental Safety Research, Japan Atomic Energy Research Institute, Ibaraki-Ken, Japan
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Chino M, Yamazawa H, Iida T. Development of an atmospheric 222Rn concentration model using a hydrodynamic meteorological model: I. One-dimensional practical model. Health Phys 1996; 70:47-54. [PMID: 7499151 DOI: 10.1097/00004032-199601000-00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A one-dimensional numerical model for 222Rn transport in an atmospheric boundary layer was developed. The model consists of two parts: a prognostic hydrodynamic model including a turbulence closure model and an atmospheric diffusion model for 222Rn. The first part predicts meteorological conditions to provide the second part with vertical turbulence conditions which affects the vertical motion of 222Rn near the Earth's surface. Calculations with the model are compared with 222Rn concentrations measured during a variety of meteorological conditions, from clear days with high radiation and low winds to cloudy days of low radiation with high winds. The model's results represent well the typical diurnal variations of the 222Rn concentrations.
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Affiliation(s)
- M Chino
- Department of Environmental Safety Research, Japan Atomic Energy Research Institute, Ibaraki-Ken, Japan
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Kosuge T, Yokota M, Sugiyama K, Yamamoto T, Mure T, Yamazawa H. Studies on bioactive substances in crude drugs used for arthritic diseases in traditional Chinese medicine. II. Isolation and identification of an anti-inflammatory and analgesic principle from the root of Angelica pubescens Maxim. Chem Pharm Bull (Tokyo) 1985; 33:5351-4. [PMID: 3879591 DOI: 10.1248/cpb.33.5351] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Kosuge T, Yokota M, Sugiyama K, Mure T, Yamazawa H, Yamamoto T. Studies on bioactive substances in crude drugs used for arthritic diseases in traditional Chinese medicine. III. Isolation and identification of anti-inflammatory and analgesic principles from the whole herb of Pyrola rotundifolia L. Chem Pharm Bull (Tokyo) 1985; 33:5355-7. [PMID: 3879592 DOI: 10.1248/cpb.33.5355] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Kosuge T, Yokota M, Sugiyama K, Yamamoto T, Mure T, Kuroki Y, Kose T, Yamazawa H. [Studies on bioactive substances in the Chinese material medicines used for arthritic diseases in traditional Chinese medicine. I. Anti-inflammatory and analgesic effect of Chinese material medicines used for arthritic diseases]. YAKUGAKU ZASSHI 1985; 105:845-7. [PMID: 4093866 DOI: 10.1248/yakushi1947.105.9_845] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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