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Inoue Y, Uemura Y, Kosugi S, Kanno M, Sano F. Unique Pharmacokinetics for Oral Tacrolimus Administration After Allogeneic Hematopoietic Stem-Cell Transplantation for Acute Myeloid Leukemia With Shwachman-Diamond Syndrome. Am J Ther 2024; 31:e318-e319. [PMID: 37831700 DOI: 10.1097/mjt.0000000000001639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Affiliation(s)
- Yasuyuki Inoue
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-city Seibu Hospital, Yokohama Japan; and
| | - Yu Uemura
- Division of Hematology, Department of Internal Medicine, St. Marianna University, Kawasaki Japan
| | - Shigeki Kosugi
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-city Seibu Hospital, Yokohama Japan; and
| | - Masatoshi Kanno
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-city Seibu Hospital, Yokohama Japan; and
| | - Fumiaki Sano
- Division of Hematology, Department of Internal Medicine, St. Marianna University, Kawasaki Japan
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Ogi J, Sano F, Nakata T, Kubo Y, Onishi W, Koswaththage C, Mochizuki T, Tashiro Y, Hizu K, Takatsuka T, Watanabe I, Koga F, Hirano T, Oike Y. A 3.06 μm Single-Photon Avalanche Diode Pixel with Embedded Metal Contact and Power Grid on Deep Trench Pixel Isolation for High-Resolution Photon Counting. Sensors (Basel) 2023; 23:8906. [PMID: 37960605 PMCID: PMC10648928 DOI: 10.3390/s23218906] [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] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
In this study, a 3.06 μm pitch single-photon avalanche diode (SPAD) pixel with an embedded metal contact and power grid on two-step deep trench isolation in the pixel is presented. The embedded metal contact can suppress edge breakdown and reduce the dark count rate to 15.8 cps with the optimized potential design. The embedded metal for the contact is also used as an optical shield and a low crosstalk probability of 0.4% is achieved, while the photon detection efficiency is as high as 57%. In addition, the integration of a power grid and the polysilicon resistor on SPAD pixels can help to reduce the voltage drop in anode power supply and reduce the power consumption with SPAD multiplication, respectively, in a large SPAD pixel array for a high-resolution photon-counting image sensor.
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Affiliation(s)
- Jun Ogi
- Sony Semiconductor Solutions Corporation, Atsugi-shi 243-0014, Japan; (F.S.); (T.N.); (Y.K.); (W.O.); (C.K.); (T.M.); (Y.T.); (K.H.); (T.T.); (I.W.); (F.K.); (T.H.); (Y.O.)
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Yamashita S, Tago M, Tokushima Y, Harada Y, Suzuki Y, Aizawa Y, Miyagami T, Sano F, Sasaki Y, Komatsu F, Shimizu T, Naito T, Urita Y, Yamashita SI. Evaluation of a Previously Developed Predictive Model for Infective Endocarditis in 320 Patients Presenting with Fever at 4 Centers in Japan Between January 2018 and December 2020. Med Sci Monit 2023; 29:e939640. [PMID: 37005715 PMCID: PMC10081041 DOI: 10.12659/msm.939640] [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] [Indexed: 04/04/2023] Open
Abstract
BACKGROUND In our previous single-center study, we developed an infective endocarditis (IE) prediction model among patients with undiagnosed fever (UF) based on 5 factors that can be obtained on admission: ambulance transfer, presence of cardiac murmur or pleural effusion, blood neutrophil percentage, and platelet count. The present study aimed to retrospectively evaluate the prediction model for IE in 320 patients presenting with fever at 4 university hospitals in Japan from January 2018 to December 2020. MATERIAL AND METHODS Patients aged ≥20 years admitted to 4 hospitals with I-330 (IE) or R-50-9 (UF) according to the International Statistical Classification of Diseases and Related Health Problems-10 were enrolled. More than 2 physicians at each hospital reviewed the patient diagnoses using the modified Duke criteria, allocating "definite IE" to IE group (n=119) and "non-definite IE" to UF group (n=201). Five factors on admission were analyzed by multivariate logistic regression. The discriminative ability and calibration of the model were evaluated using the area under the curve (AUC) and the shrinkage coefficient, respectively. RESULTS A total of 320 patients were enrolled. The odds ratios (95% confidence intervals) were as follows: ambulance transfer 1.81 (0.91-3.55); cardiac murmur 13.13 (6.69-27.36); pleural effusion 2.34 (0.62-2.42); blood neutrophil percentage 1.09 (1.06-1.14); and platelet count 0.96 (0.93-0.99). The AUC was 0.783 (0.732-0.834) with a shrinkage coefficient of 0.961. CONCLUSIONS The IE prediction model is useful to estimate the probability of IE immediately after admission for fever in patients aged ≥20 years.
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Affiliation(s)
- Shun Yamashita
- Department of General Medicine, Saga University Hospital, Saga, Japan
| | - Masaki Tago
- Department of General Medicine, Saga University Hospital, Saga, Japan
| | | | - Yukinori Harada
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University, Mibu, Tochigi, Japan
| | - Yudai Suzuki
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University, Mibu, Tochigi, Japan
| | - Yuki Aizawa
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University, Mibu, Tochigi, Japan
| | - Taiju Miyagami
- Department of General Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Fumiaki Sano
- Department of General Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Yosuke Sasaki
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Omori Hospital, Tokyo, Japan
| | - Fumiya Komatsu
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Omori Hospital, Tokyo, Japan
| | - Taro Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University, Mibu, Tochigi, Japan
| | - Toshio Naito
- Department of General Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Yoshihisa Urita
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Omori Hospital, Tokyo, Japan
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Sato A, Sano F, Takahashi H, Matsumoto N. Relapsing Infectious Mononucleosis-Like Symptoms Associated with Liver Insufficiency in a Chronic Hepatitis B Patient with Common Variable Immunodeficiency. Am J Case Rep 2022; 23:e934003. [PMID: 35184129 PMCID: PMC8870015 DOI: 10.12659/ajcr.934003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Patient: Female, 36-year-old
Final Diagnosis: Common variable immunodeficiency • EBV reactivation
Symptoms: Ascites • fever • lymphadenopathies
Medication: —
Clinical Procedure: —
Specialty: Gastroenterology and Hepatology • Immunology • Infectious Diseases
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Affiliation(s)
- Akira Sato
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, Yokohama, Kanagawa, Japan
| | - Fumiaki Sano
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, Yokohama, Kanagawa, Japan
| | - Hideaki Takahashi
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, Yokohama, Kanagawa, Japan
| | - Nobuyuki Matsumoto
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, Yokohama, Kanagawa, Japan
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Uemura Y, Hirakawa T, Matsunawa M, Kozuki K, Saiki Y, Takimoto M, Sano F, Watanabe K, Inoue Y, Arai A. [Haploidentical stem cell transplantation for acute myeloid leukemia associated with adult-onset Shwachman-Diamond syndrome]. Rinsho Ketsueki 2022; 63:94-98. [PMID: 35264508 DOI: 10.11406/rinketsu.63.94] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A 21-year-old man presented with bone marrow failure, short stature, fatty degeneration of the pancreas on CT images, and Shwachman-Bodian-Diamond syndrome (SBDS) gene abnormalities (exon 2: c.258+2T>C and deletion of exon 3). Thus, the patient was diagnosed with Shwachman-Diamond syndrome (SDS). In the clinical course, the patient developed acute myeloid leukemia (AML). Hematopoietic stem cell transplantation from the human-leukocytic-antigen-haploidentical father of the patient was performed. The patient was conditioned with 150 mg/m2 fludarabine, 6.4 mg/kg busulfan, and 4 Gy total body irradiation. Graft-versus-host disease prophylaxis included tacrolimus, micophenolate mofetil, and posttransplant cyclophosphamide. Although the patient achieved a complete remission on day 21, AML relapsed on day 434 after the transplantation. He died of sepsis. The prognosis of patients with SDS and AML is poor. Adult-onset cases must be recognized, and transplantation should be performed during bone marrow failure.
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Affiliation(s)
- Yu Uemura
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine
| | - Tsuneaki Hirakawa
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine
| | - Manabu Matsunawa
- Department of Internal Medicine, Showa University Northern Yokohama Hospital
| | - Kagehiro Kozuki
- Department of Pediatrics, Kyoto University Graduate School of Medicine
| | - Yusuke Saiki
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine
| | - Madoka Takimoto
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine, Yokohama City Seibu Hospital
| | - Fumiaki Sano
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine, Yokohama City Seibu Hospital
| | | | - Yasuyuki Inoue
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine, Yokohama City Seibu Hospital
| | - Ayako Arai
- Division of Hematology and Oncology, Department of Internal Medicine, St Marianna University School of Medicine
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Nakagama Y, Komase Y, Candray K, Nakagama S, Sano F, Tsuchida T, Kunishima H, Imai T, Shintani A, Nitahara Y, Kaku N, Kido Y. Serological Testing Reveals the Hidden COVID-19 Burden among Health Care Workers Experiencing a SARS-CoV-2 Nosocomial Outbreak. Microbiol Spectr 2021; 9:e0108221. [PMID: 34550021 PMCID: PMC8557877 DOI: 10.1128/spectrum.01082-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 08/18/2021] [Indexed: 11/20/2022] Open
Abstract
We describe the results of testing health care workers, from a tertiary care hospital in Japan that had experienced a coronavirus disease 2019 (COVID-19) outbreak during the first peak of the pandemic, for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific antibody seroconversion. Using two chemiluminescent immunoassays and a confirmatory surrogate virus neutralization test, serological testing revealed that a surprising 42% of overlooked COVID-19 diagnoses (27/64 cases) occurred when case detection relied solely on SARS-CoV-2 nucleic acid amplification testing (NAAT). Our results suggest that the NAAT-positive population is only the tip of the iceberg and the portion left undetected might potentially have led to silent transmissions and triggered the spread. A questionnaire-based risk assessment was further indicative of exposures to specific aerosol-generating procedures (i.e., noninvasive ventilation and airway suctioning) having mediated transmission and served as the origins of the outbreak. Our observations are supportive of a multitiered testing approach, including the use of serological diagnostics, in order to accomplish exhaustive case detection along the whole COVID-19 spectrum. IMPORTANCE We describe the results of testing frontline health care workers, from a hospital in Japan that had experienced a COVID-19 outbreak, for SARS-CoV-2-specific antibodies. Antibody testing revealed that a surprising 42% of overlooked COVID-19 diagnoses occurred when case detection relied solely on PCR-based viral detection. COVID-19 clusters have been continuously striking the health care system around the globe. Our findings illustrate that such clusters are lined with hidden infections eluding detection with diagnostic PCR and that the cluster burden in total is more immense than actually recognized. The mainstays of diagnosing infectious diseases, including COVID-19, generally consist of two approaches, one aiming to detect molecular fragments of the invading pathogen and the other to measure immune responses of the host. Considering antibody testing as one trustworthy option to test our way through the pandemic can aid in the exhaustive case detection of COVID-19 patients with variable presentations.
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Affiliation(s)
- Yu Nakagama
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Yuko Komase
- Department of Respiratory Internal Medicine, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, Yokohama, Japan
| | - Katherine Candray
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Sachie Nakagama
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Fumiaki Sano
- Department of Hematology and Oncology, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, Yokohama, Japan
| | - Tomoya Tsuchida
- Division of General Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Hiroyuki Kunishima
- Department of Infectious Diseases, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Takumi Imai
- Department of Medical Statistics, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Ayumi Shintani
- Department of Medical Statistics, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Yuko Nitahara
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Natsuko Kaku
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Yasutoshi Kido
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Japan
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Matsunawa M, Inoue Y, Yagihashi K, Aida Y, Uchida A, Uemura Y, Saiki Y, Takimoto M, Sano F, Miura I, Arai A. The clinicopathological analysis of organising pneumonia in myelodysplastic syndrome: high frequency in der(1;7)(q10; p10). Br J Haematol 2021; 194:214-217. [PMID: 33855707 DOI: 10.1111/bjh.17473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Manabu Matsunawa
- Department of Internal Medicine, Division of Hematology, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Yokohama, Japan
| | - Yasuyuki Inoue
- Department of Internal Medicine, Division of Hematology, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Yokohama, Japan
| | - Kunihiro Yagihashi
- Department of Radiology, Kawasaki Municipal Tama Hospital, Kawasaki, Japan
| | - Yoshio Aida
- Department of Pathology, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Yokohama, Japan
| | - Akiko Uchida
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Yu Uemura
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Yusuke Saiki
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Madoka Takimoto
- Department of Internal Medicine, Division of Hematology, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Yokohama, Japan
| | - Fumiaki Sano
- Department of Internal Medicine, Division of Hematology, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Yokohama, Japan
| | - Ikuo Miura
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Ayako Arai
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan.,Department of Hematological Therapeutics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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Inoue Y, Kosugi S, Sano F. Improvement of High Serum Levels of Biomarkers of Endothelial Injury (Vascular Cell Adhesion Molecule-1) and Inflammation (Tumor Necrosis Factor Receptor Type I) After Allogeneic Hematopoietic Stem Cell Transplantation With Sinusoidal Obstruction Syndrome Using Defibrotide. Am J Ther 2020; 28:e691-e693. [PMID: 32897904 DOI: 10.1097/mjt.0000000000001253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Yasuyuki Inoue
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-City Seibu Hospital, Yokohama, Japan
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9
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Sato Boku A, Morita M, So M, Tamura T, Sano F, Shibuya Y, Harada J, Sobue K. General Anesthetic Management of a Patient With Hypertrophic Cardiomyopathy for Oral Surgery: Did Digitalis Contribute to Bradycardia? Anesth Prog 2019; 65:192-196. [PMID: 30235429 DOI: 10.2344/anpr-65-03-12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Stabilization of circulatory dynamics is a critical issue in the anesthetic management of patients with hypertrophic cardiomyopathy (HCM). In this report, we managed general anesthesia for a 74-year-old male patient with nonobstructive HCM who developed circulatory instability intraoperatively. Severe bradycardia measuring 35 beats/min and hypotension measuring 78 mm Hg systolic were observed during surgery. Using stroke volume variation and stroke volume from the FloTrac as indices, successful circulatory management was performed with dopamine. The hypotension and bradycardia were thought to be the result of methyldigoxin and possibly associated with our perioperative management. Cardiology consult should have been obtained. We demonstrated that the FloTrac can be beneficial in diagnosing and managing cardiovascular instability and administration of dopamine in the anesthetic management of nonobstructive HCM patients.
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Affiliation(s)
- Aiji Sato Boku
- Associate Professor, Department of Anesthesiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan
| | - Maki Morita
- Resident, Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - MinHye So
- Assistant Professor, Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Tetsuya Tamura
- Assistant Professor, Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Fumiaki Sano
- Assistant Professor, Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yasuyuki Shibuya
- Professor, Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Jun Harada
- Professor, Department of Anesthesiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan
| | - Kazuya Sobue
- Professor, Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Sakai R, Ohmachi K, Sano F, Watanabe R, Takahashi H, Takasaki H, Tanaka M, Hattori Y, Kimura H, Takimoto M, Tachibana T, Tanaka E, Ishii Y, Ishiyama Y, Hagihara M, Miyazaki K, Yamamoto K, Tomita N, Ando K. Bendamustine-120 plus rituximab therapy for relapsed or refractory follicular lymphoma: a multicenter phase II study. Ann Hematol 2019; 98:2131-2138. [DOI: 10.1007/s00277-019-03750-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 06/27/2019] [Indexed: 11/30/2022]
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Inoue M, Kako E, Kinugasa R, Sano F, Iguchi H, Sobue K. Necrotizing fasciitis following primary peritonitis caused by Streptococcus pyogenes with covS mutation in a healthy woman: a case report. JA Clin Rep 2019; 5:29. [PMID: 32025929 PMCID: PMC6966751 DOI: 10.1186/s40981-019-0249-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/15/2019] [Indexed: 12/27/2022] Open
Abstract
Background Primary peritonitis due to Streptococcus pyogenes (S. pyogenes) is uncommon in patients without comorbid conditions such as immunosuppression, nephritic disease, or liver cirrhosis. Furthermore, it does not cause another infection at the same time in a healthy person. However, several S. pyogenes mutants have been reported, and some of them exhibit strong virulence. Mutation of the control of virulence (cov) S gene of Streptococcus enhances bacterium survival by repressing negative regulators of virulence, which causes bacterial invasion of aseptic tissues, such as the parenteral space. We report a case of primary peritonitis and subsequent necrotizing fasciitis by the same S. pyogenes species with mutated covS in a previously healthy woman. Case presentation We present the case of a 55-year-old woman admitted to the hospital due to abdominal pain and nausea. She was treated for peritonitis. A few days later, she became hypotensive and tachycardic and was transferred to the intensive care unit (ICU) for the treatment of septic shock with primary peritonitis. On the second day of her ICU stay, both of her forearms developed swelling and redness around the peripheral injection site. The patient had developed necrotizing fasciitis. Since her skin symptoms spread rapidly, urgent debridement was performed. Her condition improved with antibiotic treatment and multiple episodes of debridement. S. pyogenes was detected in cultures of the patient’s blood, ascites, and skin. The identified strain was emm89 genotype and had a genetic mutation of covS. Conclusions S. pyogenes with covS mutation may spread from a portal, such as the upper respiratory tract or digestive system, to all organs immediately, causing septic shock. Infection with S. pyogenes with mutated genes should be considered in the differential diagnosis of gastrointestinal symptoms, even in a previously healthy patient.
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Affiliation(s)
- Masashi Inoue
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - Eisuke Kako
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Rie Kinugasa
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Fumiaki Sano
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Hironobu Iguchi
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Kazuya Sobue
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
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Inoue Y, Matsunawa M, Sano F, Miura I. Efficacy of Recombinant Human Soluble Thrombomodulin in Treating Disseminated Intravascular Coagulation Complicating Allogeneic Hematopoietic Stem Cell Transplantation. Acta Haematol 2018; 140:121-127. [PMID: 30227394 DOI: 10.1159/000492105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 07/13/2018] [Indexed: 11/19/2022]
Abstract
The prognosis for patients who experience hemostatic complications after allogeneic hematopoietic stem cell transplantation (allo-HSCT) is poor. However, no report has investigated disseminated intravascular coagulation (DIC) caused by the complications of allo-HSCT without infection. Recombinant human soluble thrombomodulin (rhTM) was used to treat 12 episodes of DIC (n = 10; group 1) caused by allo-HSCT complications such as acute graft-versus-host disease (aGVHD) or thrombotic microangiopathy (TMA), and the clinical outcomes were compared with those of historical controls (n = 9; group 2) treated for DIC without rhTM. In group 1, the mean DIC score was significantly improved after using rhTM. Fibrinogen degeneration product (FDP), C-reactive protein (CRP), and the inflammatory cytokine high-mobility group box 1 (HMGB1) were also significantly decreased. Serial changes from the baseline values of platelet counts and levels of FDP were significantly better in group 1 than in group 2. The recovery rate from DIC was significantly higher in group 1 than in group 2. These findings suggest that rhTM is effective against both DIC and systemic inflammatory complications after allo-HSCT.
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Affiliation(s)
- Yasuyuki Inoue
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-city Seibu Hospital, Yokohama, Japan
| | - Manabu Matsunawa
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-city Seibu Hospital, Yokohama, Japan
| | - Fumiaki Sano
- Division of Hematology, Department of Internal Medicine, St. Marianna University Yokohama-city Seibu Hospital, Yokohama, Japan
| | - Ikuo Miura
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
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Abstract
In old times, when kings occasionally wanted to know the real opinion of their people, they asked their fool, and it has become a proverb that “fools tell the truth while laughing.” But the court jester is not always an agreeable man, and it is also said that before he teaches you the maxim he “will annoy and pester.” Thus we may suppose that these were of different kinds.
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14
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Yamada H, Ida K, Murakami S, Watanabe KY, Ascasibar E, Brakel R, Dinklage A, Harris JH, Okamura S, Sano F, Stroth U, Inagaki S, Tanaka K, Goto M, Nishimura K, Narihara K, Morita S, Sakakibara S, Peterson BJ, Sakamoto R, Miyazawa J, Morisaki T, Osakabe M, Toi K, Tamura N, Ikeda K, Yamazaki K, Kawahata K, Kaneko O, Ohyabu N, Komori A, Motojima O. Configuration Effect on Energy Confinement and Local Transport in LHD and Contribution to the International Stellarator Database. Fusion Science and Technology 2017. [DOI: 10.13182/fst04-a543] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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. Yamada
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Ida
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - S. Murakami
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - K. Y. Watanabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | | | - R. Brakel
- Max-Planck-Institut für Plasmaphysik, D-17941 Greifswald, Germany
| | - A. Dinklage
- Max-Planck-Institut für Plasmaphysik, D-17941 Greifswald, Germany
| | - J. H. Harris
- Australian National University, Plasma Research Laboratory, Canberra, ACT 0200, Australia
| | - S. Okamura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - F. Sano
- Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
| | - U. Stroth
- University of Kiel, Institute of Experimental and Applied Physics, 24098 Kiel, Germany
| | - S. Inagaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Tanaka
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - M. Goto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Nishimura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Narihara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - S. Morita
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - S. Sakakibara
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - B. J. Peterson
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - R. Sakamoto
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | | | - T. Morisaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - M. Osakabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Toi
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - N. Tamura
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Ikeda
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Yamazaki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - K. Kawahata
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - O. Kaneko
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
| | - O. Motojima
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi Gifu-ken 509-5292, Japan
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15
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Motojima G, Okada H, Watanabe KY, Nakamura Y, Sano F, Nagasaki K, Mizuuchi T, Kobayashi S, Kondo K, Yamamoto S, Suzuki Y, Hanatani K, Torii Y, Kaneko M, Arimoto H, Yamazaki H, Watanabe S, Tsuji T, Nakamura H, Kitagawa H, Yabutani H. Dependence of Toroidal Current on Bumpy Field Component in Heliotron J. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- G. Motojima
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - K. Y. Watanabe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
| | - Y. Nakamura
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - T. Mizuuchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - K. Kondo
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - S. Yamamoto
- The Graduate University for Advanced Studies, Department of Fusion Science, 322-6 Oroshi-cho Toki, Gifu 509-5292, Japan
| | - Y. Suzuki
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
| | - K. Hanatani
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Y. Torii
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Kyoto 611-0011, Japan
| | - M. Kaneko
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Arimoto
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Yamazaki
- The Graduate University for Advanced Studies, Department of Fusion Science, 322-6 Oroshi-cho Toki, Gifu 509-5292, Japan
| | - S. Watanabe
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - T. Tsuji
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Nakamura
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Kitagawa
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
| | - H. Yabutani
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji, Kyoto 611-0011, Japan
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16
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Yamamoto S, Nagasaki K, Suzuki Y, Mizuuchi T, Okada H, Kobayashi S, Blackwell B, Kondo K, Motojima G, Nakajima N, Nakamura Y, Nührenberg C, Torii Y, Watanabe S, Sano F. Observation of Magnetohydrodynamic Instabilities in Heliotron J Plasmas. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1290] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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)
- S. Yamamoto
- Osaka University, Graduate School of Engineering, 2-1 Yamadaoka Suita 565-0871, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - Y. Suzuki
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - T. Mizuuchi
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - B. Blackwell
- The Australian National University, Research School of Physical Science and Engineering, Canberra, Australia
| | - K. Kondo
- Kyoto University, Graduate School of Energy Science, Gokasho Uji 611-0011, Japan
| | - G. Motojima
- Kyoto University, Graduate School of Energy Science, Gokasho Uji 611-0011, Japan
| | - N. Nakajima
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - Y. Nakamura
- Kyoto University, Graduate School of Energy Science, Gokasho Uji 611-0011, Japan
| | - C. Nührenberg
- Max-Planck-Institut für Plasmaphysik, IPP-Euratom Association, Greifswald, Germany
| | - Y. Torii
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
| | - S. Watanabe
- Kyoto University, Graduate School of Energy Science, Gokasho Uji 611-0011, Japan
| | - F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho Uji 611-0011, Japan
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17
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Dinklage A, Ascasíbar E, Beidler CD, Brakel R, Geiger J, Harris JH, Kus A, Murakami S, Okamura S, Preuss R, Sano F, Stroth U, Suzuki Y, Talmadge J, Tribaldos V, Watanabe KY, Weller A, Yamada H, Yokoyama M. Assessment of Global Stellarator Confinement: Status of the International Stellarator Confinement Database. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1281] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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)
- A. Dinklage
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - E. Ascasíbar
- Laboratorio Nacional de Fusión, EURATOM-CIEMAT, 28040 Madrid, Spain
| | - C. D. Beidler
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - R. Brakel
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - J. Geiger
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - J. H. Harris
- Oak Ridge National Laboratory, Fusion Energy Division, Oak Ridge, Tennessee 37830
| | - A. Kus
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | | | - S. Okamura
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - R. Preuss
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - F. Sano
- Kyoto University, Kyoto, Japan
| | - U. Stroth
- Universität Stuttgart, Institut für Plasmaforschung, Germany
| | - Y. Suzuki
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - J. Talmadge
- University of Wisconsin, HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - V. Tribaldos
- Laboratorio Nacional de Fusión, EURATOM-CIEMAT, 28040 Madrid, Spain
| | - K. Y. Watanabe
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - A. Weller
- Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Greifswald, Germany
| | - H. Yamada
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
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18
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Kaneko M, Kobayashi S, Suzuki Y, Mizuuchi T, Nagasaki K, Okada H, Nakamura Y, Hnatani K, Murakami S, Kondo K, Sano F. Fast Ion Dynamics of NBI Plasmas in Heliotron J. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1265] [Citation(s) in RCA: 5] [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: 11/12/2022]
Affiliation(s)
- M. Kaneko
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - Y. Suzuki
- National Institute Fusion Science, Toki, Gifu 509-5292, Japan
| | - T. Mizuuchi
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - Y. Nakamura
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - K. Hnatani
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - S. Murakami
- Kyoto University, Graduate School of Engineering, Kyoto 606-8501, Japan
| | - K. Kondo
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
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19
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Mizuuchi T, Sano F, Nagasaki K, Okada H, Kobayashi S, Hanatani K, Torii Y, Ijiri Y, Senju T, Yaguchi K, Sakamoto K, Toshi K, Shibano M, Kondo K, Nakamura Y, Kaneko M, Arimoto H, Motojima G, Fujikawa S, Kitagawa H, Nakamura H, Tsuji T, Uno M, Watanabe S, Yabutani H, Matsuoka S, Nosaku M, Watanabe N, Yamamoto S, Watanabe KY, Suzuki Y, Yokoyama M. Configuration Control for the Confinement Improvement in Heliotron J. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1256] [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)
- T. Mizuuchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Hanatani
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - Y. Torii
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - Y. Ijiri
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - T. Senju
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Yaguchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Sakamoto
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Toshi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - M. Shibano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Kondo
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Y. Nakamura
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - M. Kaneko
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - H. Arimoto
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - G. Motojima
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Fujikawa
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - H. Kitagawa
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - H. Nakamura
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - T. Tsuji
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - M. Uno
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Watanabe
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - H. Yabutani
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Matsuoka
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - M. Nosaku
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - N. Watanabe
- Kyoto University, Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Yamamoto
- Osaka University, Graduate School of Engineering, Yamadaoka 1-1 Suita 565-0871, Japan
| | - K. Y. Watanabe
- National Institute for Fusion Science Oroshi-cho 322-6, Toki 509-5292, Japan
| | - Y. Suzuki
- National Institute for Fusion Science Oroshi-cho 322-6, Toki 509-5292, Japan
| | - M. Yokoyama
- National Institute for Fusion Science Oroshi-cho 322-6, Toki 509-5292, Japan
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20
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Sano F, Mizuuchi T, Nagasaki K, Okada H, Kobayashi S, Kondo K, Hanatani K, Nakamura Y, Nakasuga M, Besshou S, Yamamoto S, Yokoyama M, Suzuki Y, Manabe Y, Shidara H, Takamiya T, Ohno Y, Nishioka Y, Yukimoto H, Takahashi K, Fukagawa Y, Kawazome H, Kaneko M, Tsuboi S, Nakazawa S, Nishio S, Yamada M, Ijiri Y, Senju T, Yaguchi K, Sakamoto K, Tohshi K, Shibano M, Tribaldos V, Tabares F, Obiki T. Observation of H-Mode Operation Windows for ECH Plasmas in Heliotron J. Fusion Science and Technology 2017. [DOI: 10.13182/fst04-a567] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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)
- F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - T. Mizuuchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - K. Kondo
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - K. Hanatani
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - Y. Nakamura
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - M. Nakasuga
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - S. Besshou
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - S. Yamamoto
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - M. Yokoyama
- National Institute for Fusion Science, Gifu, Toki, Japan
| | - Y. Suzuki
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - Y. Manabe
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - H. Shidara
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - T. Takamiya
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - Y. Ohno
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - Y. Nishioka
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - H. Yukimoto
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - K. Takahashi
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - Y. Fukagawa
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - H. Kawazome
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - M. Kaneko
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - S. Tsuboi
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - S. Nakazawa
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - S. Nishio
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - M. Yamada
- Kyoto University, Graduate School of Energy Science, Yoshidahonmachi, Kyoto, Japan
| | - Y. Ijiri
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - T. Senju
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - K. Yaguchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - K. Sakamoto
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - K. Tohshi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - M. Shibano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, Japan
| | - V. Tribaldos
- Laboratorio Nacional de Fusion, Asociacion EURATOMCIEMAT, Madrid, Spain
| | - F. Tabares
- Laboratorio Nacional de Fusion, Asociacion EURATOMCIEMAT, Madrid, Spain
| | - T. Obiki
- Kyushu Institute of Information Sciences, Dazaifu, Fukuoka, Japan
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21
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Zang L, Mizuuchi T, Nishino N, Ohshima S, Yamamoto S, Sun YC, Kasajima K, Takeuchi M, Mukai K, Lee HY, Kenmochi N, Ohtani Y, Nagasaki K, Kado S, Okada H, Minami T, Kobayashi S, Shi N, Konoshima S, Nakamura Y, Sano F. Interpretation of Plasma Fluctuation Data from Combination Measurement of a Perpendicular-View Camera and a Langmuir Probe in Heliotron J. Fusion Science and Technology 2017. [DOI: 10.13182/fst14-862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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)
- L. Zang
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - T. Mizuuchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - N. Nishino
- Hiroshima University, Graduate School of Engineering, Higashihiroshima, 739-8527, Japan
| | - S. Ohshima
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - S. Yamamoto
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - Y. C. Sun
- Tsinghua University, Department of Engineering Physics, Beijing, 100084, China
| | - K. Kasajima
- Kyoto University, Graduate School of Energy Science, Uji, 611-0011, Japan
| | - M. Takeuchi
- Japan Atomic Energy Agency, Naka Fusion Institute, Naka, 311-0193, Japan
| | - K. Mukai
- National Institute for Fusion Science, Toki, 509-5292, Japan
| | - H. Y. Lee
- Korean Advanced Institute of Science and Technology, Daejeon, 305-701, Korea
| | - N. Kenmochi
- Hiroshima University, Graduate School of Engineering, Higashihiroshima, 739-8527, Japan
| | - Y. Ohtani
- Kyoto University, Graduate School of Energy Science, Uji, 611-0011, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - S. Kado
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - T. Minami
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - N. Shi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - S. Konoshima
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - Y. Nakamura
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
| | - F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
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Sato A, Ishii T, Sano F, Yamada T, Takahashi H, Matsumoto N. Severe de novo Hepatitis B Recovered from Late-Onset Liver Insufficiency with Prolonged Ascites and Hypoalbuminemia due to Hepatitis B Virus Genotype Bj with Precore Mutation. Case Rep Gastroenterol 2016; 10:553-559. [PMID: 27920641 PMCID: PMC5121562 DOI: 10.1159/000450543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 08/31/2016] [Indexed: 12/16/2022] Open
Abstract
De novo hepatitis B is associated with a high risk of hepatic failure often resulting in fatal fulminant hepatitis even when nucleotide analogues are administered. A 77-year-old female developed de novo hepatitis B after R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone) treatment for diffuse large B-cell lymphoma. Hepatitis B virus (HBV) isolated from the patient was of genotype Bj, with a precore mutation (G1896A) exhibiting an extremely high viral load at the onset of hepatitis. She showed markedly high levels of transaminase with mild jaundice on admission and rapid decrease of prothrombin activity after admission. Although acute liver failure was averted by the administration of entecavir and corticosteroid pulse therapy, liver volume decreased to 860 ml, and marked hypoalbuminemia accompanying massive ascites occurred 2 months after the onset of hepatitis and persisted for 3 months with high levels of HBV DNA and mild abnormal alanine aminotransferase levels. Frequent infusions of albumin solution, nutrition support, and alleviation therapy showed limited effect. However, overall improvement along with HBV DNA reduction was observed after increasing the dose of entecavir and completion of prednisolone that was administered with a minimum dose for adrenal insufficiency. An immediate and sufficient suppression of virus replication with potent antiviral therapy is critical, particularly in patients infected with HBV precore mutation (G1896A) and/or Bj genotype, which may have a high viral replication and direct hepatocellular damage.
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Affiliation(s)
- Akira Sato
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Toshiya Ishii
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Fumiaki Sano
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Takayuki Yamada
- Department of Radiology, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Hideaki Takahashi
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Nobuyuki Matsumoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
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Sato A, Ishii T, Adachi K, Takahashi H, Sano F, Matsumoto N. Delayed Viral Clearance after 6-Week Treatment with Peginterferon Plus Ribavirin in a Patient with Chronic Hepatitis C Virus Genotype 1b. Case Rep Gastroenterol 2016; 10:417-422. [PMID: 27721727 PMCID: PMC5043335 DOI: 10.1159/000448072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 06/28/2016] [Indexed: 12/28/2022] Open
Abstract
Following interferon-based therapy for chronic hepatitis C, the negativity of hepatitis C virus RNA is essential to achieve viral clearance at the end of treatment. We report a case of clearance of chronic hepatitis C virus infection following early discontinuation (at 6 weeks) of peginterferon plus ribavirin therapy, without negativity for hepatitis C virus RNA during the treatment period. The patient was a 76-year-old Japanese male infected with hepatitis C virus genotype 1b and TT of IL28B rs8099917. Hepatitis C virus RNA remained positive at persistently low levels for more than 2 months after the cessation of therapy and became negative at 7 months after the discontinuation of therapy. Spontaneous clearance of hepatitis C virus RNA can occur following antiviral failure in patients with persistently low viral loads, and virological follow-up is therefore necessary in chronic hepatitis C virus infection, even after antiviral failure.
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Affiliation(s)
- Akira Sato
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Toshiya Ishii
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Kayo Adachi
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Hideaki Takahashi
- Division of Gastroenterology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Fumiaki Sano
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Nobuyuki Matsumoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
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Okuno Y, Isomura S, Kamakura T, Sano F, Tamahori K, Goto T, Hayashida T, Kitagawa Y, Fukuhara A, Takeda K. Corrigendum: Dimethylaminopyridine-Supported Graft Polymer Catalyst and its Flow System. ChemSusChem 2015; 8:2764. [PMID: 26334770 DOI: 10.1002/cssc.201501065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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26
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Okuno Y, Isomura S, Kamakura T, Sano F, Tamahori K, Goto T, Hayashida T, Kitagawa Y, Fukuhara A, Takeda K. Dimethylaminopyridine-supported graft polymer catalyst and its flow system. ChemSusChem 2015; 8:1711-1715. [PMID: 25855359 DOI: 10.1002/cssc.201500092] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Indexed: 06/04/2023]
Abstract
A new heterogeneous organocatalyst, graft polymer supported dimethylaminopyridine (g-DMAP), is developed. This catalyst has a flexible structure and comprises DMAP anchored to the polyethylene-graft-polyacrylic acid (PE-g-PAA). It exhibits higher activity than DMAP supported on polystyrene cross-linked with divinylbenzene and can be recovered in batch mode acetylation. The activity and stability of this catalyst allow its application in continuous flow systems. Continuous acetylation proceeds with excellent conversion, and a turnover number of 560 can be achieved using g-DMAP. Parallel fixed bed reactors were used to scale up the synthesis of this continuous flow system. Eight parallel fixed bed reactors displayed excellent conversion.
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Affiliation(s)
- Yoshinori Okuno
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Shigeki Isomura
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Takahiro Kamakura
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Fumiaki Sano
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Kaoru Tamahori
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Takahiro Goto
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Takahiro Hayashida
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Yuuichi Kitagawa
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Ami Fukuhara
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Kazuyoshi Takeda
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan).
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27
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Ohshima S, Kobayashi S, Yamamoto S, Nagasaki K, Mizuuchi T, Kado S, Okada H, Minami T, Lee HY, Zang L, Kenmochi N, Kasajima K, Ohtani Y, Shi N, Nagae Y, Konoshima S, Sano F. Highly time-resolved evaluation technique of instantaneous amplitude and phase difference using analytic signals for multi-channel diagnostics. Rev Sci Instrum 2014; 85:11E814. [PMID: 25430379 DOI: 10.1063/1.4891102] [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: 06/04/2023]
Abstract
A fluctuation analysis technique using analytic signals is proposed. Analytic signals are suitable to characterize a single mode with time-dependent amplitude and frequency, such as an MHD mode observed in fusion plasmas since the technique can evaluate amplitude and frequency at a specific moment without limitations of temporal and frequency resolutions, which is problematic in Fourier-based analyses. Moreover, a concept of instantaneous phase difference is newly introduced, and error of the evaluated phase difference and its error reduction techniques using conditional/ensemble averaging are discussed. These techniques are applied to experimental data of the beam emission spectroscopic measurement in the Heliotron J device, which demonstrates that the technique can describe nonlinear evolution of MHD instabilities. This technique is widely applicable to other diagnostics having necessity to evaluate phase difference.
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Affiliation(s)
- S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Yamamoto
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Y Lee
- Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - L Zang
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - N Kenmochi
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Kasajima
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Ohtani
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - N Shi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Nagae
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Sano
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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28
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Kenmochi N, Minami T, Takahashi C, Tei S, Mizuuchi T, Kobayashi S, Nagasaki K, Nakamura Y, Okada H, Kado S, Yamamoto S, Ohshima S, Konoshima S, Shi N, Zang L, Ohtani Y, Kasajima K, Sano F. First measurement of time evolution of electron temperature profiles with Nd:YAG Thomson scattering system on Heliotron J. Rev Sci Instrum 2014; 85:11D819. [PMID: 25430232 DOI: 10.1063/1.4890255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A Nd:YAG Thomson scattering system has been developed for Heliotron J. The system consists of two 550 mJ 50 Hz lasers, large collection optics, and 25 radial channel (∼1 cm spatial resolution) interference polychromators. This measurement system achieves a S/N ratio of ∼50 for low-density plasma (ne ∼ 0.5 × 10(19) m(-3)). A time evolution of electron temperature profiles was measured with this system for a high-intensity gas-puff (HIGP) fueling neutral-beam-injection plasma. The peripheral temperature of the higher-density phase after HIGP recovers to the low-density pre-HIGP level, suggesting that improving particle transport in the HIGP plasma may be possible.
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Affiliation(s)
- N Kenmochi
- Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - C Takahashi
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - S Tei
- Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - Y Nakamura
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - S Yamamoto
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - N Shi
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - L Zang
- Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - Y Ohtani
- Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - K Kasajima
- Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan
| | - F Sano
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
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29
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Hiraizumi S, Nishinomiya H, Oikawa T, Sakagami N, Sano F, Nishino O, Kurahara T, Nishimoto N, Ishiyama O, Hasegawa Y, Hashiyada Y. Superovulatory response in Japanese Black cows receiving a single subcutaneous porcine follicle-stimulating hormone treatment or six intramuscular treatments over three days. Theriogenology 2014; 83:466-73. [PMID: 25476823 DOI: 10.1016/j.theriogenology.2014.09.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/09/2014] [Accepted: 09/11/2014] [Indexed: 11/16/2022]
Abstract
To reduce labor for superovulation treatment by twice-daily intramuscular (im) administration of FSH for more than 3 to 4 days, we investigated the superovulatory responses of Japanese Black cows to porcine FSH (pFSH) used as a single subcutaneous (sc) administration at two different doses in two different volumes of saline. In experiment 1, 20 Armour units (AU) of pFSH dissolved in either 10 mL (treatment A; n = 14) or 50 mL (treatment B; n = 14) of saline was administered subcutaneously in the neck region. In experiment 2, 30 AU of pFSH dissolved in either 10 mL (treatment C; n = 15) or 50 mL (treatment D; n = 15) of saline was administered subcutaneously in the neck region. The control animals in experiment 1 (n = 14) and experiment 2 (n = 15) received 20 AU of pFSH administered intramuscularly twice daily in decreasing doses for more than 3 days. In experiment 1, mean (±SEM) numbers of CL (15.4 ± 2.5, 18.1 ± 3.4, and 17.2 ± 2.6), total number of ova and embryos (12.9 ± 1.4, 15.9 ± 3.5, and 16.2 ± 2.8), and transferable embryos (7.5 ± 2.0, 10.4 ± 2.8, and 8.0 ± 2.1) did not differ among treatments A, B, and control. In experiment 2, mean (±SEM) numbers of CL (20.5 ± 4.3, 20.4 ± 2.7, and 20.1 ± 3.4), total number of ova and embryos (21.7 ± 4.2, 17.3 ± 3.4, and 16.5 ± 3.2), and transferable embryos (8.1 ± 1.6, 9.3 ± 2.2, and 9.5 ± 1.9) did not differ among treatments C, D, and control. Although there were no differences in serum pFSH concentrations among the three treatments at each of the time points in experiment 1, in experiment 2, the serum pFSH concentration at 6 and 8 hours after pFSH administration in treatment C (3.1 ± 0.8, 2.7 ± 0.5 ng/mL, mean ± SEM) was significantly greater (P < 0.05) than in the control (0.7 ± 0.1, 1.1 ± 0.2 ng/mL). At 10 hours after administration, the pFSH concentration had decreased and there were no differences among the three treatments at subsequent time points. These results suggest that increasing the volume of saline or the dose of pFSH does not affect the absorption pattern of pFSH administered as a single sc administration. In conclusions, single sc administration of pFSH at a dose of 20 or 30 AU dissolved in 10 or 50 mL of saline is able to induce a superovulatory response comparable with that obtained by twice-daily im administration in Japanese Black cows.
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Affiliation(s)
- S Hiraizumi
- Aomori Prefectural Industrial Technology Research Center, Livestock Research Institute, Noheji, Aomori, Japan.
| | - H Nishinomiya
- Livestock Experiment Station, Akita Prefectural Agriculture Forestry and Fisheries Research Center, Akita, Japan
| | - T Oikawa
- Miyagi Prefectural Livestock Experiment Station, Miyagi, Japan
| | - N Sakagami
- Kanagawa Prefectural Livestock Technology Center, Kanagawa, Japan
| | - F Sano
- Shizuoka Prefectural Research Institute of Animal Industry, Shizuoka, Japan
| | - O Nishino
- Nara prefectural Livestock Technology Center, Nara, Japan
| | - T Kurahara
- Oita Prefectural Agriculture, Forestry and Fisheries Research Center Livestock Research Institute, Oita, Japan
| | - N Nishimoto
- Aomori Prefectural Industrial Technology Research Center, Livestock Research Institute, Noheji, Aomori, Japan
| | - O Ishiyama
- Aomori Prefectural Industrial Technology Research Center, Livestock Research Institute, Noheji, Aomori, Japan
| | - Y Hasegawa
- Laboratory of Experimental Animal Science, Kitasato University, Towada Aomori, Japan
| | - Y Hashiyada
- National Livestock Breeding Center, Fukushima, Japan
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30
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Shi N, Ohshima S, Tanaka K, Minami T, Nagasaki K, Yamamoto S, Ohtani Y, Zang L, Mizuuchi T, Okada H, Kado S, Kobayashi S, Konoshima S, Kenmochi N, Sano F. A novel electron density reconstruction method for asymmetrical toroidal plasmas. Rev Sci Instrum 2014; 85:053506. [PMID: 24880368 DOI: 10.1063/1.4872379] [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: 06/03/2023]
Abstract
A novel reconstruction method is developed for acquiring the electron density profile from multi-channel interferometric measurements of strongly asymmetrical toroidal plasmas. It is based on a regularization technique, and a generalized cross-validation function is used to optimize the regularization parameter with the aid of singular value decomposition. The feasibility of method could be testified by simulated measurements based on a magnetic configuration of the flexible helical-axis heliotron device, Heliotron J, which has an asymmetrical poloidal cross section. And the successful reconstruction makes possible to construct a multi-channel Far-infrared laser interferometry on this device. The advantages of this method are demonstrated by comparison with a conventional method. The factors which may affect the accuracy of the results are investigated, and an error analysis is carried out. Based on the obtained results, the proposed method is highly promising for accurately reconstructing the electron density in the asymmetrical toroidal plasma.
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Affiliation(s)
- N Shi
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - K Tanaka
- National Institute for Fusion Science, Toki, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - S Yamamoto
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - Y Ohtani
- Graduate School of Energy Science, Kyoto University, Uji, Japan
| | - L Zang
- Graduate School of Energy Science, Kyoto University, Uji, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
| | - N Kenmochi
- Graduate School of Energy Science, Kyoto University, Uji, Japan
| | - F Sano
- Institute of Advanced Energy, Kyoto University, Gokasyo, Uji, Japan
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Kurosawa S, Miyawaki S, Yamaguchi T, Kanamori H, Sakura T, Moriuchi Y, Sano F, Kobayashi T, Yasumoto A, Hatanaka K, Yanada M, Nawa Y, Takeuchi J, Nakamura Y, Fujisawa S, Shibayama H, Miura I, Fukuda T. Prognosis of patients with core binding factor acute myeloid leukemia after first relapse. Haematologica 2013; 98:1525-31. [PMID: 23716553 DOI: 10.3324/haematol.2012.078030] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Core binding factor acute myeloid leukemia is known to have a favorable prognosis, however, there have been no detailed analyses on prognostic factors after first relapse. Using a nationwide database, we retrospectively analyzed core binding factor acute myeloid leukemia patients who relapsed after being treated with chemotherapy alone during their first complete remission. Of a total of 397 patients who were diagnosed with core binding factor acute myeloid leukemia, 208 experienced a first relapse, and analyses were performed in 139 patients for whom additional data were available. In the entire cohort, the overall survival rate after relapse was 48% at 3 years. By multivariate analysis, younger age at diagnosis, a longer interval before relapse, and inv(16) were shown to be independently associated with better survival after relapse. Although there was no significant difference in survival after relapse between patients who underwent allogeneic hematopoietic cell transplantation and those who did not in the overall series of relapsed patients, we found that transplantation significantly improved survival among patients who had t(8;21) (54% versus 26% at 3 years, P=0.002). In addition, among patients with t(8;21), those who had different cytogenetics at relapse had a significantly improved survival after transplantation, while those who had same cytogenetics did not. We showed that the prognosis differs significantly and optimal treatment strategies may vary between groups of patients with core binding factor acute myeloid leukemia with different cytogenetic profiles at relapse. These findings may help to guide therapeutic decisions after first relapse.
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32
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Kobayashi S, Kado S, Oishi T, Ohshima S, Kagawa T, Nagae Y, Yamamoto S, Mizuuchi T, Nagasaki K, Okada H, Minami T, Estrada T, Murakami S, Lee HY, Minami T, Harada T, Nakamura Y, Konoshima S, Toushi K, Sano F. Density fluctuation measurements using beam emission spectroscopy on Heliotron J. Rev Sci Instrum 2012; 83:10D535. [PMID: 23126873 DOI: 10.1063/1.4734039] [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: 06/01/2023]
Abstract
This paper describes the measurement of the density fluctuation using beam emission spectroscopy in Heliotron J, having the non-symmetrical helical-magnetic-axis configuration. In order to optimize the sightlines, the numerical calculations are carried out to estimate the spatial resolution and the observation location. When a tangential neutral beam is used as diagnostic one, suitable sightlines from the newly installed diagnostic port are selected whose spatial resolution Δρ is less than ± 0.07 over the entire plasma region. Modification of the interference filter and the detection systems enables us to measure the radial profile of the density fluctuation. Each of the three coherent modes due to the fast-ion-driven magnetohydrodynamic instabilities has different radial structure of the density fluctuation.
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Affiliation(s)
- S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan.
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Abstract
Petit mal absence has been reported with 3-Hz generalized spike-and-wave discharges induced by secondary bilateral synchrony. Absence seizure may be present in patients with frontal lobe epilepsy. The thalamic rhythmogenic mechanisms responsible for spike-and-wave discharges have been investigated, providing a better understanding of the underlying anatomico-physiological mechanisms. We report the thalamocortical coupling in a patient with frontal absence by performing synchronous ictal single photon emission computed tomography (SPECT) analysis. Ictal SPECT revealed thalamic hyperperfusion combined with ipsilateral frontal cortical hyperperfusion in the patient. Moreover, lateral indexes of cerebral blood flow in the frontal region and thalamus were higher than those from non-epileptic control subjects. Thalamocortical coupling was thus revealed by ictal SPECT. Frontal absences should be considered as a secondarily generalized epilepsy syndrome originating from the frontal regions. The thalamus may play a crucial role as a pacemaker of rhythmic electroencephalographic activities such as secondary bilateral synchronous discharges in patients with frontal absences.
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Affiliation(s)
- H Kanemura
- Department of Pediatrics, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan.
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Hiraizumi S, Nishimoto N, Ishiyama O, Nishinomiya H, Oikawa T, Sano F, Sakagami N, Yamamoto M, Nishino O, Ooishi K, Kurahara T, Hashiyada Y. 319 SUPEROVULATORY RESPONSE IN JAPANESE BLACK CATTLE BY A SINGLE SUBCUTANEOUS ADMINISTRATION OF PURE FOLLICLE-STIMULATING HORMONE DISSOLVED IN SALINE. Reprod Fertil Dev 2011. [DOI: 10.1071/rdv23n1ab319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The objective of this study was to evaluate the superovulatory response to a single SC administration of pFSH (Antrin R-10) dissolved in saline in Japanese Black cattle. Forty Japanese Black cows were divided into 5 groups. All cows received a progesterone releasing intravaginal device (PRID) at a random stage of the oestrous cycle except the day of oestrus (Day 0). Superovulatory treatments were initiated on Day 4 with single SC administration of 20 AU pFSH dissolved in 10 mL of saline (Group A) or 50 mL of saline (Group B), or 30 AU pFSH dissolved in 10 mL of saline (Group C) or 50 mL of saline (Group D). Conventional superovulatory treatment (Group E) was also initiated on Day 4 with 20 AU pFSH in decreasing doses in IM administration twice a day for 3 days (5/5, 3/3, and 2/2 in the am/pm). Each administration was carried out in the neck region. For oestrus induction, all animals were treated with prostaglandin F2α (750 μg of cloprostenol) on Day 4, and then the PRID was removed on Day 6 in the morning. The GnRH (10 μg of buserelin) was administrated at 31 h after PRID removal to induce ovulations. The cows were artificially inseminated at 24 h after GnRH treatment, and embryos were recovered 7 days after the insemination. Blood samples were collected at 0, 2, 4, 6, 8, 10, 24, 31, 48, 55, 72, and 79 h after the first pFSH administration, and serum pFSH concentration was measured using time-resolved fluorescence immunoassay. Percentage data were arcsine transformed before analysis, and one-way ANOVA was used for statistical analysis (P < 0.05). There were no significant (P > 0.05) differences among groups in the number of corpus luteum, total number of ova/embryos, number of transferable embryos, and percentage of transferable embryos. The concentrations of pFSH in serum increased in all groups 2 h after each administration and reached a peak at 8 h in Groups A and C, at 10 h in Groups B, D, and E, and then in all groups it decreased gradually. The concentrations of pFSH in serum decreased to the base level (the level at 0 h) in Group A at 55 h and in Group C at 72 h after the first pFSH administration. At 79 h, serum pFSH was still detected in Groups B, D, and E. These results suggest that the single SC administration of 20 AU pFSH that is the same dose as the conventional treatment is able to induce a superovulatory response comparable to that of conventional treatment in Japanese Black cattle.
Table 1.Superovulatory responses (mean ± SE) in different treatment groups
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Ohshima S, Yamamoto S, Takeuchi M, Nagasaki K, Mizuuchi T, Okada H, Minami T, Kobayashi S, Hanatani K, Konoshima S, Sano F. Multichannel Langmuir probe for turbulence study in Heliotron J. Rev Sci Instrum 2010; 81:10E137. [PMID: 21033998 DOI: 10.1063/1.3496980] [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: 05/30/2023]
Abstract
New multichannel Langmuir probe system was developed and installed to Heliotron J. The objective of the new probe is to characterize basic turbulence property and the resulting transport in advanced helical configuration. The probe developed here consists of four sets of triple probe and one pin for floating potential measurement. Initial experiments in neutral beam heating plasma were conducted and fluctuation profile of radial and poloidal electric fields and Reynolds stress were estimated. For precise evaluation of the electric fields and Reynolds stress, a technique to compensate radial change of tilt angle between probe array and magnetic surface was proposed and applied to the initial results obtained in edge region of Heliotron J where the complicated magnetic structure exists.
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Affiliation(s)
- S Ohshima
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan.
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Kobayashi S, Kado S, Oishi T, Kagawa T, Ohshima S, Mizuuchi T, Nagasaki K, Yamamoto S, Okada H, Minami T, Murakami S, Lee HY, Minami T, Nakamura Y, Hanatani K, Konoshima S, Takeuchi M, Toushi K, Sano F. Application of beam emission spectroscopy to NBI plasmas of Heliotron J. Rev Sci Instrum 2010; 81:10D726. [PMID: 21033919 DOI: 10.1063/1.3495787] [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: 05/30/2023]
Abstract
This paper describes the application of the beam emission spectroscopy (BES) to Heliotron J, having the nonsymmetrical helical-magnetic-axis configuration. The spectral and spatial profile of the beam emission has been estimated by the numerical calculation taking the collisional excitation processes between plasmas (electrons/ions) and beam atoms. Two sets of the sightlines with good spatial resolution are presented. One is the optimized viewing chords which have 20 sightlines and observe the whole plasma region with the spatial resolution Δρ less than ±0.055 using the newly designed viewing port. The other is 15 sightlines from the present viewing port of Heliotron J for the preliminary measurement to discuss the feasibility of the density fluctuation measurement by BES. The beam emission has been measured by a monochromator with a CCD camera. A good consistency has been obtained between the spectral profiles of the beam emission measured by the monochromator and the beam emission spectrum deduced by the model calculation. An avalanche photodiode with an interference filter system was also used to evaluate the signal-to-noise (S/N) ratio of the beam emission in the present experimental setup. The modification of the optical system is being planned to improve the S/N ratio, which will enable us to estimate the density fluctuation in Heliotron J.
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Affiliation(s)
- S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan.
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Kurosawa S, Yamaguchi T, Uchida N, Miyawaki S, Usuki K, Watanabe M, Yamashita T, Kanamori H, Tomiyama J, Nawa Y, Yano S, Takeuchi J, Yakushiji K, Sano F, Uoshima N, Yano T, Nannya Y, Moriuchi Y, Miura I, Takaue Y, Fukuda T. Comparison of allogeneic hematopoietic cell transplantation and chemotherapy in elderly patients with non-M3 acute myelogenous leukemia in first complete remission. Biol Blood Marrow Transplant 2010; 17:401-11. [PMID: 20667478 DOI: 10.1016/j.bbmt.2010.07.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Accepted: 07/13/2010] [Indexed: 10/19/2022]
Abstract
The benefits of allogeneic hematopoietic cell transplantation (allo-HCT) for patients with acute myelogenous leukemia (AML) in first complete remission (CR1) have mostly been evaluated in younger patients. Although favorable outcomes of allo-HCT over chemotherapy have been reported with the use of reduced-intensity conditioning (RIC) regimens in elderly patients with AML in CR1, information is still limited, especially on the effects of cytogenetic risks and donor sources. We collected data from AML patients aged 50 to 70 years who achieved CR1, and compared the outcome in 152 patients who underwent allo-HCT in CR1 (HCT group) to that in 884 patients who were treated with chemotherapy (CTx group). The cumulative incidence of relapse in the HCT group was significantly lower than that in the CTx group (22% versus 62%). Both overall survival (OS) and relapse-free survival (RFS) were significantly improved in the HCT group (OS: 62% versus 51%, P = .012), not only in the whole population, but also in the intermediate-risk group. Among patients who had a suitable related donor, the outcomes in the HCT group were significantly better than those in the CTx group. The introduction of appropriate treatment strategies that include allo-HCT may improve the outcome in elderly patients with AML in CR1.
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Affiliation(s)
- Saiko Kurosawa
- Stem Cell Transplantation Division, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
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38
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Takimoto M, Nagura S, Sano F, Nagoshi H, Miura I. [Acquired hemophilia complicated with hemorrhage induced acute renal failure]. Rinsho Ketsueki 2010; 51:407-412. [PMID: 20622487] [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: 05/29/2023]
Abstract
A 63-year-old woman, without a family history of hemophilia, was admitted to our hospital because of subcutaneous bleeding, intramuscular and intra-articular hematoma, and macroscopic hematuria. On routine blood analysis, a prolonged activated partial thromboplastin time, decreased concentration of factor VIII to less than 1%, and a markedly elevated level of factor VIII inhibitor to 14.1 BU/ml were revealed. Diagnosis of acquired hemophilia was made and she was treated with prednisolone and recombinant activated factor VII (rFVIIa). On day 9 of rFVIIa therapy, she was complicated by acute renal failure (ARF) with increasing macroscopic hematuria. Computed tomography revealed bilateral swelling of the kidneys with bleeding and dilatation of the left renal pelvis. Activated prothrombin complex concentrates (aPCC) was administrated in combination with steroid pulse therapy and hydration. The bleeding tendency, including ARF, was improved with aPCC, and she was treated with prednisolone and cyclophosphamide. She is currently in good health and attending an outpatients' clinic. Acquired hemophilia is associated with various underlying conditions, but our patient did not show any previous history. ARF is a rare complication in acquired hemophilia, requiring a non-invasive treatment combination with early induction of immunosuppressive therapy.
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Affiliation(s)
- Madoka Takimoto
- Department of Internal Medicine, Division of Hematology and Oncology, Yokohama City Seibu Hospital, St. Marianna University School of Medicine
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Ikehara M, Yamaguchi H, Yamamoto T, Komase Y, Sano F, Shinagawa T. [Case of pulmonary MALT lymphoma with follow-up imaging for 10 years]. Nihon Kokyuki Gakkai Zasshi 2008; 46:146-151. [PMID: 18318260] [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
Although abnormal shadow in the left upper lung of an 84-year-old male patient was confirmed in an examination in November 1996, follow-up observation was discontinued. In July 2006, he first visited our department with a chief complaint of shortness of breath, and was hospitalized because of an abnormal shadow in the left upper lung field and left pleural effusion. Since atypical lymphocytes were found in the pleural effusion, and positive cellular surface markers CD19 and 20, and chromosomal aberration of t (11 ; 18) (q22 ; q21) were confirmed, extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) was diagnosed. Transbronchial lung biopsy of the left upper lobe confirmed small lymphocyte-like cellular infiltration, as seen in the pleural effusion, and CD20 immunostaining was positive, leading to the diagnosis of MALT lymphoma. In addition, serum immunoelectrophoresis demonstrated the development of macroglobulinemia as a complication. This case is valuable as changes diagnostic image over 10 years can be compared.
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MESH Headings
- Aged, 80 and over
- Antigens, CD19/analysis
- Antigens, CD20/analysis
- Biomarkers, Tumor/analysis
- Diagnosis, Differential
- Follow-Up Studies
- Humans
- Immunoelectrophoresis
- Lung Neoplasms/complications
- Lung Neoplasms/diagnosis
- Lymphoma, B-Cell, Marginal Zone/complications
- Lymphoma, B-Cell, Marginal Zone/diagnosis
- Male
- Time Factors
- Tomography, X-Ray Computed
- Waldenstrom Macroglobulinemia/complications
- Waldenstrom Macroglobulinemia/diagnosis
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Affiliation(s)
- Mizuki Ikehara
- Department of Respiratory Medicine, St. Marianna University Yokohama Seibu Hospital
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Murakami T, Sano F, Huang Y, Komiya A, Baba M, Osada Y, Nagashima Y, Kondo K, Nakaigawa N, Miura T, Kubota Y, Yao M, Kishida T. Identification and characterization of Birt-Hogg-Dubé associated renal carcinoma. J Pathol 2007; 211:524-531. [PMID: 17323425 DOI: 10.1002/path.2139] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [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: 01/12/2023]
Abstract
The Birt-Hogg-Dubé (BHD) gene is responsible for BHD syndrome, a rare autosomal dominant disease, characterized by benign hair follicle tumours, spontaneous pneumothorax and renal neoplasms with diverse histology. To elucidate its involvement in the development of renal neoplasms, we examined a total of 100 sporadic renal tumours with various histological subtypes for BHD mutation by SSCP-sequencing analyses. We found one germline insertion mutation in the C8 hotspot of exon 11 (c.1733insC), which is known to have a strong association with renal tumour occurrence. The germline-mutated patient suffered from solitary renal cell carcinoma (RCC) but did not have any other BHD manifestations or family history. The tumour revealed heterogeneous cytomorphology, mainly a mixture of eosinophilic and focally clear cells with tubulopapillary architecture. In this tumour, both BHD alleles were inactivated by germline mutation concomitant with loss of heterozygosity, and the amount of BHD mRNA detected by real-time quantitative PCR (RQ-PCR) was very low. Renal tumour subtype/nephron segment-specific gene expression detected by RQ-PCR demonstrated that the tumour expressed relatively high amounts of alpha-methylacyl-CoA racemase (AMACR) and the KIT oncogene, but relatively low amounts of carbonic anhydrase IX (CA9), aquaporin 1 (AQP1), claudin 7 (CLDN7), parvalbumin (PVALB), chloride channel Kb (CLCNKB) and 11-beta-hydroxysteroid dehydrogenase 2 (HSD11B2), suggesting diverse mRNA signatures. Further clustering analysis of 88 renal tumours based on expression of these eight genes sub-classified the tumour as close to oncocytomas and chromophobe RCCs, which are considered distal nephron-associated tumours. These data suggest that somatic mutation of BHD is relatively rare in Japanese patients. The BHD-mutated RCC identified in this study, which exhibits heterogeneous biological features in both morphology and gene expression signatures, seems to deviate from our current understanding of renal tumour classification.
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Affiliation(s)
- T Murakami
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - F Sano
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Huang
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - A Komiya
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Baba
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Osada
- Department of Urology, Kanagawa Cancer Centre, Yokohama, Japan
| | - Y Nagashima
- Department of Molecular Pathology and Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - K Kondo
- Department of Urology, Yokohama City University Medical Centre, Yokohama, Japan
| | - N Nakaigawa
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - T Miura
- Department of Urology, Kanagawa Cancer Centre, Yokohama, Japan
| | - Y Kubota
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Yao
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - T Kishida
- Department of Urology, Yokohama City University Medical Centre, Yokohama, Japan
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Kawazome H, Tsuboi S, Kondo K, Mizuuchi T, Sano F, Nagasaki K, Okada H, Kobayashi S, Takahashi K, Shidara H, Manabe Y, Kaneko M, Ohno Y, Takamiya T, Nishioka Y, Yukimoto H, Nakazawa S, Nishio S, Fukagawa Y, Yamada M, Obiki T. Spectroscopic Study of Impurity Behavior in Heliotron-J Plasmas. Fusion Science and Technology 2004. [DOI: 10.13182/fst04-a549] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hayato Kawazome
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Shintaro Tsuboi
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Katsumi Kondo
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - T. Mizuuchi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - F. Sano
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Nagasaki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - H. Okada
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - S. Kobayashi
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
| | - K. Takahashi
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - H. Shidara
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Y. Manabe
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - M. Kaneko
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Y. Ohno
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - T. Takamiya
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Y. Nishioka
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - H. Yukimoto
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Nakazawa
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - S. Nishio
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - Y. Fukagawa
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - M. Yamada
- Kyoto University Graduate School of Energy Science, Gokasho, Uji 611-0011, Japan
| | - T. Obiki
- Kyoto University, Institute of Advanced Energy, Gokasho, Uji 611-0011, Japan
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Sakairi T, Kobayashi K, Goto K, Okada M, Kusakabe M, Tsuchiya T, Sugimoto J, Sano F, Mutai M, Morohashi T. Immunohistochemical characterization of hepatoblastomas in B6C3F1 mice treated with diethylnitrosamine and sodium phenobarbital. J Vet Med Sci 2001; 63:1121-5. [PMID: 11714029 DOI: 10.1292/jvms.63.1121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hepatoblastomas (HBs) were induced in B6C3F1 male mice by diethylnitrosamine (DEN) and sodium phenobarbital (PB). Six-week-old mice received a single intraperitoneal dose of DEN followed by a continuous treatment with PB in diet at a concentration of 0 (group 1) or 500 (group 2) ppm for 50 weeks. HBs were observed in 13 of 21 (62%) group 2 mice, with typical histologic features as reported previously, while no such tumors were observed in group 1. Seven of 13 (54%) HBs were found in and/or adjacent to hepatocellular adenomas (HCAs) or hepatocellular carcinomas (HCCs). Immunohistochemically, all HBs were positive for S-100 protein but negative for keratin, alpha-fetoprotein (AFP), albumin (ALB) and vimentin, while HCC cells occasionally reacted positively for AFP with a mosaic pattern. HCC and HCA cells were occasionally positive for ALB. Non-neoplastic hepatocytes and normal bile ducts were positively stained for ALB and keratin/S-100 protein, respectively. S-100 protein is known to be expressed in many mesenchymal tissues and neoplasms including neuroectodermal elements but negative in cells of the hepatic lineage. Thus, the present immunohistochemical results suggested that mesenchymal differentiation occurs in mouse HB cells as observed in human HBs, one of the most frequent infant liver tumors in humans. Although the susceptibility of mouse HBs to PB-promotion suggests a hepatocytic histogenesis, the present immunohistochemical results support the hypothesis that the mouse HB is derived from pluripotent endodermal stem-like cells.
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Affiliation(s)
- T Sakairi
- Toxicology Laboratory, Research Center, Mitsubishi-Tokyo Pharmaceuticals, Inc, Kisarazu, Chiba, Japan
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Sakairi T, Kobayashi K, Goto K, Okada M, Kusakabe M, Tsuchiya T, Sugimoto J, Sano F, Mutai M. Greater expression of transforming growth factor alpha and proliferating cell nuclear antigen staining in mouse hepatoblastomas than hepatocellular carcinomas induced by a diethylnitrosamine-sodium phenobarbital regimen. Toxicol Pathol 2001; 29:479-82. [PMID: 11560253 DOI: 10.1080/01926230152499962] [Citation(s) in RCA: 10] [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: 10/27/2022]
Abstract
Transforming growth factor alpha (TGF-alpha) is a potent stimulator of normal hepatocyte proliferation, considered to have relationship to the liver regeneration or carcinogenesis. In this study, we investigated immunohistochemically the association between expression of TGF-alpha and cell proliferation activity in mouse hepatoblastomas (HBs) and hepatocellular carcinomas (HCCs) induced in B6C3F1 mice by diethylnitrosamine and sodium phenobarbital. The TGF-alpha-positive rate in HBs (29.2%) was significantly higher than that in HCCs (12.7%). Likewise, the proliferating cell nuclear antigen-positive rate (22.2%) was higher than the HCC value (14.5%). On the individual data for both TGF-alpha and PCNA, most of the HBs showed higher positive rates than HCCs. In HBs, TGF-alpha was localized only in the nuclei, whereas some HCC cells stained positive both in their nuclei and cytoplasm (0.6%). These results suggest expression of TGF-alpha and its localization might be linked to cell proliferation and play a role in malignant progression of mouse HBs.
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Affiliation(s)
- T Sakairi
- Toxicology Laboratory, Research Center, Mitsubishi-Tokyo Pharmaceuticals, Inc., Kisarazu, Chiba, Japan.
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Suzuki A, Ohyashiki K, Kimura Y, Matsuda S, Sano F, Yamada O, Ohno R. Frequent association between trisomy 15 and t(8;21)(q22;q22) in acute myeloid leukemia. Cancer Genet Cytogenet 2001; 126:169-70. [PMID: 11394390 DOI: 10.1016/s0165-4608(00)00396-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Suzuki A, Ohyashiki K, Kimura Y, Yamada H, Sano F, Miyawaki S, Kuriyama K, Ohno R. Trisomy 11 acute myeloid leukemia: 5 additional cases from the Japan Adult Leukemia Study Group AML-92 and AML-95 databases. Int J Hematol 2000; 72:466-9. [PMID: 11197213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We searched for trisomy 11 in acute myelogenous leukemia (AML) patients using the Japan Adult Leukemia Study Group (JALSG) AML-92 and -95 databases to clarify the clinical and hematologic features of a rare numerical chromosome abnormality. Among the sequentially registered patients of JALSG AML-92 (655 patients) and JALSG AML-95 (531 patients), chromosome findings were obtained for 1074 patients (90.6%); we found 5 patients with trisomy 11 as the sole abnormality. The patients were 4 women and 1 man with trisomy 11 AML, all aged more than 45 years (median, 52 years), with 4 M1 morphologies and 1 M2. No patients manifested hepatosplenomegaly or lymph node enlargement, and no central nervous system leukemia or extramedullary lesions were detectable. All showed positivity for CD13 (5/5), CD33 (5/5), CD34 (3/3), CD38 (2/2), and HLA-DR (5/5). Except for 1 patient, all achieved complete remission after 1 course of induction chemotherapy, but 2 relapsed after discontinuation of chemotherapy. A third case of relapse occurred during intensification of chemotherapy, and the patient underwent allogenic bone marrow transplantation but died from interstitial pneumonia.
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Affiliation(s)
- A Suzuki
- First Department of Internal Medicine, Tokyo Medical University, 6-7-1 Nishi-shinjuku Shinjuku-ku, Tokyo 160-0023, Japan
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Kobayashi K, Kusakabe M, Okada M, Sakairi T, Goto K, Tsuchiya T, Sugimoto J, Sano F, Mutai M. Immunohistochemical localization of transforming growth factor alpha in chemically induced rat hepatocellular carcinomas with reference to differentiation and proliferation. Toxicol Pathol 2000; 28:664-7. [PMID: 11026601 DOI: 10.1177/019262330002800505] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hepatocellular carcinomas (HCCs) were induced in male Fischer 344 rats with dietary 3'-methyl-4-(dimethylamino)-azobenzene treatment and were classified into solid, glandular (well- or poorly differentiated), and trabecular types. Investigation of cell proliferation kinetics and immunohistochemical localization of transforming growth factor alpha (TGF-alpha) demonstrated all solid (n = 24) and poorly differentiated glandular type (n = 6) HCCs to have TGF-alpha-positive nuclei. Nuclear staining of TGF-alpha was also observed in 13 of 28 (46%) trabecular-type HCCs, whereas 12 (43%) exhibited cytoplasmic staining, and 3 (11%) were negative. As for well-differentiated glandular HCCs, 7 of 20 (35%) were positively stained in their nucleus, another 7 (35%) demonstrated antibody binding in the cytoplasm, and 6 (30%) were negative. The order for growth rate evaluated by bromodeoxyuridine (BrdU) labeling was solid (38.22%), poorly differentiated glandular (26.82%), trabecular (7.98%), and well-differentiated glandular (2.57%) types. For trabecular HCCs with nuclear, cytoplasmic, or negative TGF reactions, values were 13.39% (n = 13), 3.61% (n = 12), and 2.01% (n = 3), respectively. Likewise, BrdU-labeling indices for the counterpart groups of well-differentiated glandular type HCCs were 4.53, 1.91, and 1.29%, respectively. The results indicate that TGF-alpha expression might be linked to histopathological differentiation and cell proliferation in rat HCCs.
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Affiliation(s)
- K Kobayashi
- Pharmacokinetics & Toxicology Laboratory, Yokohama Research Center, Mitsubishi-Tokyo Pharmaceuticals Inc, Yokohama, Japan.
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Tsuji K, Motoji T, Sugawara I, Shiozaki H, Wang YH, Motomura S, Okada M, Yasunami T, Sano F, Takahashi M, Kawada H, Maseki N, Hoshino S, Ishida M, Mizoguchi H. Significance of lung resistance-related protein in the clinical outcome of acute leukaemic patients with reference to P-glycoprotein. Br J Haematol 2000; 110:370-8. [PMID: 10971394 DOI: 10.1046/j.1365-2141.2000.02181.x] [Citation(s) in RCA: 16] [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] [Indexed: 11/20/2022]
Abstract
Lung resistance-related protein (LRP) overexpression in leukaemic blast cells from acute leukaemia patients and the effect of LRP or P-glycoprotein (P-gp) on the clinical outcome of acute leukaemia were investigated individually by dividing patients into four groups. The complete remission rate of group I (LRP and P-gp both negative) was 81.7%, group II (only LRP positive) 87.5%, group III (only P-gp positive) 87.1% and group IV (LRP and P-gp both positive) 40.0%. There were no statistical differences between group I and groups II or III, but a significant difference was observed between groups I, II or III and group IV. Median overall survival in group IV was significantly shorter (4.6 months) than in groups I, II or III, although no significant differences were observed between group I and groups II or III (18.9, 20.5 and 31.8 months). There was a tendency for disease-free survival in group III to be longer than that in groups I, II or IV. The reasons for these findings are discussed. Our present results indicate that the co-existence of LRP and P-gp strongly influenced the effectiveness of induction chemotherapy and long-term prognosis, whereas the isolated presence of LRP or P-gp did not.
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Affiliation(s)
- K Tsuji
- Department of Medicine, St. Marianna Medical University, Tokyo, Japan
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Sano F, Cortez GK, Solé D, Naspitz CK. Inhaled budesonide for the treatment of acute wheezing and dyspnea in children up to 24 months old receiving intravenous hydrocortisone. J Allergy Clin Immunol 2000; 105:699-703. [PMID: 10756218 DOI: 10.1067/mai.2000.104784] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Inhaled corticosteroids are highly effective in the treatment of asthma at all ages, and their use in younger children is increasing. There are no data currently available on the treatment of infants with acute wheeze and dyspnea with nebulized budesonide. OBJECTIVE Our purpose was to assess the clinical effect of nebulized budesonide in infants with acute wheeze and dyspnea. METHODS A prospective study was performed comparing the addition of nebulized budesonide 0.25 mg every 6 hours (group A, n = 32) and nebulized ipratropium bromide 0.1 mg every 6 hours (group B, n = 39) with the normal treatment regimen with intravenous fluid, hydrocortisone, and nebulized fenoterol. A clinical score was made at admission and every 12 hours. The score included wheezing and costal retraction (0-6) and respiratory rate (counts per minute). RESULTS Seventy-one infants aged 3 to 24 months were studied (42 boys). A statistically significant reduction was seen in clinical score and respiratory rate in both groups 12 hours after admission. The children who received budesonide improved significantly faster than the children who received ipratropium bromide, and the hospitalization period was significantly lower in the budesonide group (66.4 hours) compared with the ipratropium bromide group (93 hours) (P <.01). Three patients from the budesonide group and 2 from the ipratropium bromide group were readmitted within the first 4 weeks. CONCLUSION Treatment of infants with acute wheeze with nebulized budesonide is associated with faster clinical improvement and reduction in hospital stay period.
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Affiliation(s)
- F Sano
- Hospital Nipo-brasileiro, Division of Allergy and Clinical Immunology and Rheumatology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
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Kobayashi K, Sano F, Mutai M, Sugimoto J. Glomerulonephritis with fibrillary deposition in a transgenic mouse carrying the human prototype c-Ha-ras gene (rasH2 mouse). Toxicol Pathol 2000; 28:359-62. [PMID: 10805155 DOI: 10.1177/019262330002800217] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Glomerulonephritis was observed in a 34-week-old transgenic CB6F1 mouse carrying the human prototype c-Ha-ras gene (rasH2 mouse) from a medium-term carcinogenicity study of N-methyl-N-nitrosourea (MNU). Lesions were characterized by severe diffuse enlargement and prominent hyalinization of glomeruli. The hyaline material was positive for periodic acid-Schiff but negative for amyloid by the Congo red method. Immunohistochemically, affected glomeruli were positive for polyclonal anti-mouse IgG. Ultrastructurally, there were characteristic subendothelial and mesangial deposits composed of fibrils showing a fingerprint pattern. Lamellae were 7.5-14.3 nm in diameter and formed multilayered structures. In addition to the renal lesions, a lymphoma was observed in the thymus, with metastasis to the spleen and some lymph nodes. However, there was no glomerulonephritis in 32 other mice bearing thymic lymphomas and in more than 40 males and females given MNU in the same study. Thus, the lesions in this mouse may have been spontaneous. Glomerulonephritis was not found in more than 120 other male and female rasH2 mice in our facility. This is the first report of glomerulonephritis in a rasH2 mouse, a promising candidate for medium-term carcinogenicity risk assessment.
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Affiliation(s)
- K Kobayashi
- Pharmacokinetics & Toxicology Laboratory, Yokohama Research Center, Mitsubishi-Tokyo Pharmaceuticals Inc, Japan.
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Tsuchiya T, Ooyama N, Murakami T, Sano F, Sugimoto J, Mutai M. COLLABORATIVE WORK TO EVALUATE TOXICITY ON MALE REPRODUCTIVE ORGANS BY REPEATED DOSE STUDIES IN RATS : 25)EFFECTS OF 2- AND 4- WEEK REPEATED-DOSING OF DIBROMOACETIC ACID. J Toxicol Sci 2000; 25 Spec No:241-9. [PMID: 11349450 DOI: 10.2131/jts.25.specialissue_241] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
To assess the sensitivity of rats to a testicular toxicant, 2- and 4-week repeated-dose studies using dibromoacetic acid (DBAA) were performed. Four groups of 6- or 8-week old male SD rats were given DBAA at a daily dosage of 0, 5, 50 or 250 mg/kg. The highest dose was given for 2 weeks, and the others for 2 and 4 weeks. There were no effects on body or testicular weights in any of the DBAA-treated groups. However, the mean absolute epididymal weight in the 250 mg/kg group was significantly lower than that of the control group. Histopathologically, atypical residual bodies (ARBs) and retention of Step 19 spermatids were evident with this high dose. In the same group, ARBs in the epididymal ducts and narrowing of these lumina were also observed. Retention of Step 19 spermatids was similarly apparent in the testes of animals given 50 mg/kg for 2 or 4 weeks, and in one animal given 5 mg/kg for 4 weeks. Based on these data, DBAA testicular toxicity is histopathologically detectable within 2-weeks of repeated dosing at an appropriate dose.
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Affiliation(s)
- T Tsuchiya
- Toxicology Laboratory, Kazusa Research Center, Mitsubishi-Tokyo Pharmaceuticals, Inc., 100-5 Yana, Kisarazu, Chiba 292-0812, Japan
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