1
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Fukushima T, Tomita M, Ikeda S, Hattori N. A case of sensory ataxic Guillain-Barré syndrome with immunoglobulin G anti-GM1 antibodies following the first dose of mRNA COVID-19 vaccine BNT162b2 (Pfizer). QJM 2022; 115:25-27. [PMID: 34871447 PMCID: PMC8690109 DOI: 10.1093/qjmed/hcab296] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Indexed: 12/02/2022] Open
Affiliation(s)
- T Fukushima
- Department of Neurology, Toyota Kosei Hospital, 500-1 Ibobara Josui-cho, Toyota City JP470-0396, Japan
- Address correspondence to T. Fukushima, Department of Neurology, Toyota Kosei Hospital, 500-1 Ibobara Josui-cho, Toyota City JP470-0396, Japan.
| | - M Tomita
- Department of Neurology, Toyota Kosei Hospital, 500-1 Ibobara Josui-cho, Toyota City JP470-0396, Japan
| | - S Ikeda
- Department of Neurology, Toyota Kosei Hospital, 500-1 Ibobara Josui-cho, Toyota City JP470-0396, Japan
| | - N Hattori
- Department of Neurology, Toyota Kosei Hospital, 500-1 Ibobara Josui-cho, Toyota City JP470-0396, Japan
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2
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Fukushima T, Fukui J, Maemura K. Absence of exercise capacity improvement after in-hospital short-term cardiac rehabilitation is associated with long-term clinical outcome in heart failure patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous studies suggest Cardiac rehabilitation (CR) improve exercise capacity and decline mortality in heart failure (HF) patients. However, some studies show there are HF patients who do not improve exercise capacity by CR and these patients have a higher risk of adverse events in long-term clinical outcome. We investigated whether absence of exercise capacity improvement after in-hospital short-term CR also has adverse effect in long-term clinical outcome.
Methods
In this retrospective study, 130 HF patients who underwent two weeks in-hospital CR after received standardized HF treatment between July 2014 and August 2020 were included. Improvement in exercise capacity was assessed by change in peak oxygen consumption (delta-Peak VO2) measured at 1st and 14th day of CR by cardiopulmonary test. The median delta-PeakVO2 was 1.3 ml·kg-1·min-1. Patients were classified as responder if they demonstrated delta-PeakVO2 ≥1.3 ml·kg-1·min-1 and as non-responder if they demonstrated delta-PeakVO2 <1.3ml·kg-1·min-1. MeanΩ follow-up was 1236 days. The primary outcome was all-cause death.
Result
63 patients (48.4%) were classified as non-responder. Non-responders were older (75.5±10.6 vs 70.8±11.0, P=0.01) and lower estimated glomerular filtration rate (eGFR) (49.7±19.4 vs 57.9±19.2) and lower albumin (3.5±0.5 vs 3.7±0.3 g/dL, P=0.04) than responders. Transtricuspid pressure gradient (TRPG) measured by transthoracic echocardiography was also higher in non-responders (28.5±10.9 vs 22.7±6.3). Predictor of non-responders were TRPG (OR = 1.1, 95% CI 1.02–1.26) and albumin (OR =0.04, 95% CI: 0.003–0.40). In multivariate analysis including delta-PeakVO2 <1.3 ml·kg-1·min-1 (non-responder), age >75, male gender, PeakVO2 at 1st day of CR, body mass index (BMI), left ventricular ejection fraction measured by transthoracic echocardiography, medication of β-blockers showed that delta-PeakVO2 <1.3 ml·kg-1·min-1 (HR =2.8, 95% CI 1.0–7.5), age>75 (HR11.2, 95% CI 2.1–60.1), BMI (HR =0.8, 95% CI 0.6–0.96) were associated with all-cause death.
Conclusion
The absence of exercise capacity improvement after in-hospital short-term CR was the risk of all-cause death. Especially, the HF patients with higher TRPG and lower albumin have a higher probability of becoming a non-responder.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - J Fukui
- Hokusyou central hospital, Nagasaki, Japan
| | - K Maemura
- Nagasaki University, Graduate School of Biomedical Department of Cardiovascular Medicine, Nagasaki, Japan, Nagasaki, Japan
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3
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Giammattei L, di Russo P, Starnoni D, Passeri T, Bruneau M, Meling TR, Berhouma M, Cossu G, Cornelius JF, Paraskevopoulos D, Zazpe I, Jouanneau E, Cavallo LM, Benes V, Seifert V, Tatagiba M, Schroeder HWS, Goto T, Ohata K, Al-Mefty O, Fukushima T, Messerer M, Daniel RT, Froelich S. Petroclival meningiomas: update of current treatment and consensus by the EANS skull base section. Acta Neurochir (Wien) 2021; 163:1639-1663. [PMID: 33740134 DOI: 10.1007/s00701-021-04798-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [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: 12/26/2020] [Accepted: 03/03/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND The optimal management of petroclival meningiomas (PCMs) continues to be debated along with several controversies that persist. METHODS A task force was created by the EANS skull base section along with its members and other renowned experts in the field to generate recommendations for the management of these tumors. To achieve this, the task force reviewed in detail the literature in this field and had formal discussions within the group. RESULTS The constituted task force dealt with the existing definitions and classifications, pre-operative radiological investigations, management of small and asymptomatic PCMs, radiosurgery, optimal surgical strategies, multimodal treatment, decision-making, and patient's counselling. CONCLUSION This article represents the consensually derived opinion of the task force with respect to the management of PCMs.
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Affiliation(s)
- Lorenzo Giammattei
- Department of Neurosurgery, Lariboisière Hospital, Université Paris Diderot, Paris, France.
| | - P di Russo
- Department of Neurosurgery, Lariboisière Hospital, Université Paris Diderot, Paris, France
| | - D Starnoni
- Department of Neurosurgery and Gamma Knife Center, University Hospital of Lausanne and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - T Passeri
- Department of Neurosurgery, Lariboisière Hospital, Université Paris Diderot, Paris, France
| | - M Bruneau
- Department of Neurosurgery, Erasme Hospital, Brussels, Belgium
| | - T R Meling
- Department of Neurosurgery, University Hospital of Geneva, Geneva, Switzerland
| | - M Berhouma
- Department of Neurosurgery, Hopital Neurologique Pierre Wertheimer, Lyon, France
| | - G Cossu
- Department of Neurosurgery and Gamma Knife Center, University Hospital of Lausanne and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - J F Cornelius
- Department of Neurosurgery, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - D Paraskevopoulos
- Department of Neurosurgery, Barts Health NHS Trust, St. Bartholomew's and The Royal London Hospital, London, UK
| | - I Zazpe
- Department of Neurosurgery, Complejo Hospitalario de Navarra, Pamplona, Spain
| | - E Jouanneau
- Department of Neurosurgery, Hopital Neurologique Pierre Wertheimer, Lyon, France
| | - L M Cavallo
- Department of Neurosurgery, University Hospital of Naples Federico II, Napoli, NA, Italy
| | - V Benes
- Department of Neurosurgery, First Medical Faculty, Military University Hospital and Charles University, Prague, Czech Republic
| | - V Seifert
- Department of Neurosurgery, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
| | - M Tatagiba
- Department of Neurosurgery, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - H W S Schroeder
- Department of Neurosurgery, University Medicine Greifswald, Greifswald, Germany
| | - T Goto
- Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Ohata
- Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - O Al-Mefty
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - T Fukushima
- Department of Neurosurgery, Carolina Neuroscience Institute, Raleigh, NC, USA
| | - M Messerer
- Department of Neurosurgery and Gamma Knife Center, University Hospital of Lausanne and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - R T Daniel
- Department of Neurosurgery and Gamma Knife Center, University Hospital of Lausanne and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - S Froelich
- Department of Neurosurgery, Lariboisière Hospital, Université Paris Diderot, Paris, France
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4
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Iguchi K, Mushiake H, Hasegawa S, Fukushima T, Numata M, Tamagawa H, Shiozawa M, Yukawa N, Rino Y, Masuda M. Evaluation of vascular anatomy for colon cancer located in the splenic flexure using the preoperative three-dimensional computed tomography angiography with colonography. Int J Colorectal Dis 2021; 36:405-411. [PMID: 33047209 DOI: 10.1007/s00384-020-03773-x] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/07/2020] [Indexed: 02/04/2023]
Abstract
PURPOSE The aim of this study is to reveal the vascular branching variation in SFC (splenic flexure cancer) patients using the preoperative three-dimensional computed tomography angiography with colonography (3D-CTAC). METHODS We retrospectively analyzed patients with SFC who underwent preoperative 3D-CTAC between January 2014 and December 2019. RESULTS Among 1256 colorectal cancer (CRC) patients, 96 (7.6%) manifested SFC. The arterial branching from the superior mesenteric artery (SMA) was classified into five patterns, as follows: (type 1A) the left branch of middle colic artery (LMCA) diverged from middle colic artery (MCA) (N = 47, 49.0%); (2A) the LMCA diverged from the MCA and the accessory middle colic artery (AMCA) (N = 26, 27.1%); (3A) the LMCA independently diverged from the SMA (N = 16, 16.7%); (4A) the LMCA independently diverged from the SMA and AMCA (N = 3, 3.1%); (5A) only the AMCA and the LMCA was absent (N = 4, 4.1%). Venous drainage was classified into four patterns, as follows: (type 1V) the SFV flows into the inferior mesenteric vein (IMV) then back to the splenic vein (N = 50, 52.1%); (2V) the SFV flows into the IMV then back to the superior mesenteric vein (SMV) (N = 19, 19.8%); (type 3V) the SFV independently flows into the splenic vein (N = 3, 3.1%); (type 4V) the SFV is absent (N = 24, 25.0%). CONCLUSION 3D-CTAC could reveal accurate preoperative tumor localization and vascular branching. These classifications should be helpful in performing accurate complete mesocolic excision and central vessel ligation for SFC.
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Affiliation(s)
- K Iguchi
- Department of Surgery, Saiseikai Yokohamashi Nanbu Hospital, 3-2-10, Konandai, Konan-ku, Yokohama, 234-0054, Japan
| | - H Mushiake
- Department of Surgery, Saiseikai Yokohamashi Nanbu Hospital, 3-2-10, Konandai, Konan-ku, Yokohama, 234-0054, Japan.
| | - S Hasegawa
- Department of Surgery, Saiseikai Yokohamashi Nanbu Hospital, 3-2-10, Konandai, Konan-ku, Yokohama, 234-0054, Japan
| | - T Fukushima
- Department of Surgery, Saiseikai Yokohamashi Nanbu Hospital, 3-2-10, Konandai, Konan-ku, Yokohama, 234-0054, Japan
| | - M Numata
- Department of Surgery, Yokohama City University, School of Medicine, Yokohama, Japan
| | - H Tamagawa
- Department of Surgery, Yokohama City University, School of Medicine, Yokohama, Japan
| | - M Shiozawa
- Department of Colorectal Surgery, Kanagawa Cancer Center, Yokohama, Japan
| | - N Yukawa
- Department of Surgery, Yokohama City University, School of Medicine, Yokohama, Japan
| | - Y Rino
- Department of Surgery, Yokohama City University, School of Medicine, Yokohama, Japan
| | - M Masuda
- Department of Surgery, Yokohama City University, School of Medicine, Yokohama, Japan
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Nunohiro T, Kuwasaki S, Fukushima T, Furudono S, Suenaga H, Takeshita S, Nakashima H. P3391Cholesterol crystals in culprit coronary artery with acute myocardial infarction and their relation to myocardial salvage. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
The involvement of cholesterol crystals (CCs) in plaque progression and destabilization of atherosclerotic plaques has been recently recognized. However, little is known about CCs and myocardial salvage in the Acute myocardial infarction (AMI) patients. This study aimed to evaluate the association between the existence of CCs at the site of culprit coronary artery and myocardial salvage index (MSI).To investigate, we applied the diagnostic resources of Optical Coherence Tomography (OCT).
Methods
This study included 53 AMI patients (90% with STEMI) who underwent primary PCI within 24h of onset. 53 STEMI patients underwent magnetic resonance imaging (CMR) of 5th days and 3 months after PCI. Infarct size was measured on delayed-enhancement imaging, and area at risk was quantified on T2-weighted imaging. MSI was calculated as [area at risk − infarct size] × 100/area at risk. 3 months CMR with contrast-enhanced imaging of late gadolinium enhancement-LGE. Patients were divided 2 groups according to the existence of CCs at the site of culprit coronary artery.
Results
CCs occurs in 26 of 53 (49%). Acute 5th days risk area (13.5±4.1 vs 12.6±4.9, P=0.48) and 3months infarct size (5.3±3.5 vs 7.0±3.2, P=0.066) were not significant between CCs and no CCs group. But salvage index were significantly lower in patients with CCs group (47.7±17.5% vs 60.1±20.2%, P=0.021)
Conclusion
Salvage index in patients that CCs were found by the OCT analysis, remain low after AMI. This study demonstrates the potential correlation between the myocardial salvage and vulnerable morphological features of culprit lesion to the presence of CCs with AMI patients.
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Affiliation(s)
- T Nunohiro
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
| | - S Kuwasaki
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
| | - T Fukushima
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
| | - S Furudono
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
| | - H Suenaga
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
| | - S Takeshita
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
| | - H Nakashima
- Nagasaki Harbor Medical Center, Department of Cardiovascular medicine, Nagasaki, Japan
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6
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Sugita A, Koganei K, Tatsumi K, Futatsuki R, Kuroki H, Yamada K, Kimura H, Fukushima T. Postoperative functional outcomes and complications of partially intraanal canal anastomosis in stapled ileal pouch anal anastomosis for ulcerative colitis. Int J Colorectal Dis 2019; 34:1317-1323. [PMID: 31175423 DOI: 10.1007/s00384-019-03322-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/23/2019] [Indexed: 02/04/2023]
Abstract
AIM For ulcerative colitis (UC), stapled ileal pouch anal anastomosis (IPAA) reportedly results in better bowel function than does IPAA with mucosectomy. However, a potential cancer risk in the remnant mucosa has been observed. The clinical results of IPAA by double stapling technique (DS-IPAA) in which the anastomotic line was on the dentate line at posterior wall and the top of anal canal at anterior wall ("Partially intraanal canal anastomosis": PICA) to reduce the remnant mucosa were evaluated. METHODS Clinical results of PICA were retrospectively compared with those by DS-IPAA with anastomosis at above the anal canal on 1 year after open surgery. Of 211 UC cases that underwent DS-IPAA, 146 cases (69%) with PICA who were confirmed by the squamous epithelium on the posterior part of the distal donuts were included. Sixty-five cases with anastomosis above the anal canal were evaluated as the control. One stage surgery underwent in 95% of PICA and 93% of control. RESULTS One year after surgery, each group had six bowel movements daily. Nighttime evacuation was found in 16% of PICA and in 20% of control. Soiling was found in 1% of PICA and 4.8% of control. After one stage operation, anastomotic leakage that needed ileostomy was observed in 0.7% of PICA and 3% of control. CONCLUSION Partially intraanal canal anastomosis (PICA) can reduce anal canal mucosa with the same postoperative bowel function and complication rate as DS-IPAA above the anal canal. This procedure may be feasible for UC patients who can tolerate this procedure in terms of decreasing postoperative cancer risk.
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Affiliation(s)
- Akira Sugita
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital, 56 Okazawa cho, Hodogaya ward, Yokohama, 240-8555, Japan.
| | - Kazutaka Koganei
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital, 56 Okazawa cho, Hodogaya ward, Yokohama, 240-8555, Japan
| | - Kenji Tatsumi
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital, 56 Okazawa cho, Hodogaya ward, Yokohama, 240-8555, Japan
| | - Ryo Futatsuki
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital, 56 Okazawa cho, Hodogaya ward, Yokohama, 240-8555, Japan
| | - Hirosuke Kuroki
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital, 56 Okazawa cho, Hodogaya ward, Yokohama, 240-8555, Japan
| | - Kyoko Yamada
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital, 56 Okazawa cho, Hodogaya ward, Yokohama, 240-8555, Japan
| | - Hideaki Kimura
- Inflammatory Bowel Disease Center, Yokohama City University Medical Center, Yokohama, Japan
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Hidaka T, Kakamu T, Endo S, Kasuga H, Masuishi Y, Kumagai T, Sato S, Sasaki T, Fukushima T. Factors associated with possession of accurate knowledge regarding occupational health management among operations leaders of radiation decontamination workers in Fukushima, Japan: a cross-sectional study. BMJ Open 2019; 9:e025729. [PMID: 31061030 PMCID: PMC6502049 DOI: 10.1136/bmjopen-2018-025729] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES An operations leader (OL) takes an important role in occupational health management for radiation decontamination workers in Japan, and candidates for the position must participate in a training session to acquire the necessary knowledge as required by law. However, it has not been clarified whether the candidates for the OL position actually possess accurate knowledge regarding occupational health management for such work after the training session. We, therefore, aimed at examining the current occupational health management knowledge among the candidates and investigating factors related to the knowledge, with hypothesis that possession of accurate knowledge is associated with prior experience of having worked in radiation decontamination. DESIGN A cross-sectional study. SETTING The training sessions held by Fukushima Prefecture Labor Standard Associations in Fukushima, Japan, in 2017. PARTICIPANTS Eighty male candidates participated in the training sessions. OUTCOME The number/proportion of correct answers to the questions regarding occupational health management, such as those on working environment management, control of operations and health management. RESULTS The proportion of those who possessed accurate knowledge regarding working environment management, control of operations and health management was 68.8%, 55.0% and 51.2%, respectively. Experience of radiation decontamination work was associated with the possession of inaccurate knowledge regarding working environment management (OR 0.140 (95% CI 0.042 to 0.464)), and the uncertainty of future radiation decontamination work schedules in difficult-to-return zones was associated with the possession of accurate knowledge regarding health management (OR 4.344 (95% CI 1.509 to 12.50)). CONCLUSIONS Previous experience in radiation decontamination work may hinder the ability to acquire accurate information regarding working environment management among candidates for an OL position. To promote adequate occupational health management for radiation decontamination workers, it is required to establish an effective instructional method for the OL candidate training sessions with consideration of previous relevant experience.
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Affiliation(s)
- T Hidaka
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - T Kakamu
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - S Endo
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - H Kasuga
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - Y Masuishi
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - T Kumagai
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - S Sato
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - T Sasaki
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - T Fukushima
- Department of Hygiene and Preventive Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
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8
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Fukushima T, Nakajima K, Nozawa H, Nishino H, Sugita A, Koganei K, Futatsuki R, Yamaguchi S, Asano S, Matsushima M. [A case of Crohn's disease complicated by Guillain-Barrè syndrome during ustekinumab therapy]. Nihon Shokakibyo Gakkai Zasshi 2019; 116:324-329. [PMID: 30971669 DOI: 10.11405/nisshoshi.116.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We herein report a case involving a 23-year-old male patient with active Crohn's disease complicated by Guillain-Barrè syndrome during ustekinumab therapy. At age 11, the patient developed an anal fistula and was found to have multiple aphthae on the rectosigmoid colon, for which he was diagnosed with Crohn's disease. At age 12, he underwent gastrojejunal anastomosis for pyrolic stenosis. At age 20, a longitudinal ulcer was found on the ascending colon, and at age 21, aphthae were found on the stomach and efferent jejunum. At age 22, adalimumab was started, but the patient noted abdominal pain and diarrhea 4 months later. Hence, adalimumab was switched to ustekinumab (2017 June). Though ustekinumab was effective, the patient noted anorexia, weakness, and bilateral lower extremity numbness 1 year later (2018 June) and was admitted to the hospital. He was then diagnosed with Guillain-Barrè syndrome after spinal tap, neurological, and hematological examinations. Immunoglobulin therapy was provided but was less effective. The patient has since been receiving physical therapy. This has been the first report regarding Guillain-Barrè syndrome as a complication during ustekinumab therapy.
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Affiliation(s)
| | | | | | | | - Akira Sugita
- Department of IBD, Yokohama Municipal Citizen's Hospital
| | | | - Ryou Futatsuki
- Department of IBD, Yokohama Municipal Citizen's Hospital
| | | | - Shiori Asano
- Department of Neurology, Yokohama Municipal Citizen's Hospital
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9
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Yamauchi M, Hata S, Eguchi H, Kitano S, Fukushima T, Higashi M, Sadakiyo M, Kato K. Catalytic enhancement on Ti–Zr complex oxide particles for electrochemical hydrogenation of oxalic acid to produce an alcoholic compound by controlling electronic states and oxide structures. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01541h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ti0.9Zr0.1O2 complex oxide particles exhibit superior catalytic performances for the direct power storage into glycolic acid via electroreduction of oxalic acid due to favorable crystallinity.
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Affiliation(s)
- M. Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Nishi-ku
- Japan
| | - S. Hata
- Department of Applied Chemistry
- Faculty of Engineering
- Sanyo-Onoda City University
- Sanyo-Onoda
- Japan
| | - H. Eguchi
- Department of Chemistry
- Graduate School of Science
- Kyushu University
- Nishi-ku
- Japan
| | - S. Kitano
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Nishi-ku
- Japan
| | - T. Fukushima
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Nishi-ku
- Japan
| | - M. Higashi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Nishi-ku
- Japan
| | - M. Sadakiyo
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Nishi-ku
- Japan
| | - K. Kato
- RIKEN SPring-8 Center
- Sayo-gun
- Japan
- JST
- PRESTO
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10
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Kuroki H, Sugita A, Koganei K, Tatsumi K, Futatsuki R, Obara N, Arai K, Fukushima T. Crohn's disease manifesting as ileo-urachal fistula: Two cases reports and review of literatures. Int J Surg Case Rep 2018; 53:70-74. [PMID: 30390487 PMCID: PMC6215960 DOI: 10.1016/j.ijscr.2018.10.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 09/25/2018] [Accepted: 10/14/2018] [Indexed: 01/06/2023] Open
Abstract
Urachal tumor or umbilical discharge in Crohn’s disease are examined for internal fistula from diseased ileum to urachus. En broc resection with intestinal lesion and urachus is performed with successful outcome. Partial cystectomy is sometimes performed with urinary bladder inflamed.
Introduction: A fistula involving a patent urachus in a patient with Crohn’s disease is rare. Here we report ileourachal fistula formation in two patients with Crohn’ disease. Case presentations: The first patient was a 29-year-old man with Crohn’s disease and ileitis, and the second patient was a 43-year-old man with Crohn’s disease and ileitis. One of the patients showed pus/fecal discharge via the umbilicus. Both patients were eventually diagnosed with an ileourachal fistula associated with Crohn’s disease. In the first patient, the urachal remnant was connected to the urinary bladder and a Crohn’s disease-related intestinal lesion had formed a fistula to the urachus. In the second patient, a periumbilical inflammatory lesion extended to the bladder through the urachal remnant and to a longitudinal ulcer of the ileal lesion. The first patients underwent partial ileal resection, and partial cystectomy, while the second patient underwent urachal curettage, partial ileal resection, and partial cystectomy. In both. Conclusion: In cases of Crohn’s disease with an enterocutaneous fistula or pus discharge via the umbilicus, an examination to detect an urachal remnant with a fistula from the diseased intestine should be performed.
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Affiliation(s)
- Hirosuke Kuroki
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Akira Sugita
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Kazutaka Koganei
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Kenji Tatsumi
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Ryo Futatsuki
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Nao Obara
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Katsuhiko Arai
- Department of Surgery, Yokohama Municipal Citizen's Hospital, 240-8555 56, Okazawacho Hodogaya-ku, Yokohama City, Japan.
| | - Tsuneo Fukushima
- Matsushima Clinic, 220-0045 3-138 Isecho Nishi-ku, Yokohama City, Japan.
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11
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Bjerregaard T, Graziano M, Vock E, Kahlbaugh G, Houser W, Page T, Mera K, Fukushima T, Kuzumoto M, Frahm S. BioCelerate Toxicology Data Sharing initiative: Development of a centralized, searchable Preclinical Data Repository for the Biopharmaceutical Industry. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Sekiguchi H, Yoshimura A, Fukushima T, Suzuki K, Ogiso M, Kawada-Watanabe E, Arashi H, Yamaguchi J, Ogawa H, Hagiwara N. P6242Simple risk score for predicting secondary cardiovascular events in ACS patients undergoing contemporary aggressive lipid-lowering management for dyslipidaemia: a sub-analysis of the HIJ-PROPER study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Sekiguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - A Yoshimura
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - T Fukushima
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Suzuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Ogiso
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Kawada-Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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13
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Nakashima H, Fukushima T, Muto S, Furudono S, Nunohiro T, Maemura K. P1742Effects of sleep-disordered breathing on myocardial stress and renal function in patients with acute myocardial infarction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Nakashima
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - T Fukushima
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - S Muto
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - S Furudono
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - T Nunohiro
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - K Maemura
- Nagasaki University, Graduate School of Biomedical Sciences, Department of Cardiovascular Medicine, Nagasaki, Japan
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14
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Nakashima H, Fukushima T, Muto S, Furudono S, Nunohiro T, Maemura K. P1248Impact of adherence to continuous positive airway pressure on the long-term clinical outcomes in patients with acute myocardial infarction and obstructive sleep apnea. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Nakashima
- Nagasaki Harbor Medical Center, Department of Cardiovascular Medicine, Nagasaki, Japan
| | - T Fukushima
- Nagasaki Harbor Medical Center, Department of Cardiovascular Medicine, Nagasaki, Japan
| | - S Muto
- Nagasaki Harbor Medical Center, Department of Cardiovascular Medicine, Nagasaki, Japan
| | - S Furudono
- Nagasaki Harbor Medical Center, Department of Cardiovascular Medicine, Nagasaki, Japan
| | - T Nunohiro
- Nagasaki Harbor Medical Center, Department of Cardiovascular Medicine, Nagasaki, Japan
| | - K Maemura
- Nagasaki University, Graduate School of Biomedical Sciences, Department of Cardiovascular Medicine, Nagasaki, Japan
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15
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Sekiguchi H, Yoshimura A, Fukushima T, Suzuki K, Ogiso M, Kawada-Watanabe E, Arashi H, Yamaguchi J, Ogawa H, Hagiwara N. P2531Comparison of risk factors for cardiovascular outcomes between patients with and without diabetes: results from the HIJ-PROPER Study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Sekiguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - A Yoshimura
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - T Fukushima
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Suzuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Ogiso
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Kawada-Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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16
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Nakashima H, Fukushima T, Muto S, Furudono S, Nunohiro T, Maemura K. P1251Impact of obstructive sleep apnea on circadian variation of infarct size in patients with acute myocardial infarction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Nakashima
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - T Fukushima
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - S Muto
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - S Furudono
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - T Nunohiro
- Nagasaki Harbor Medical Center, Cardiovascular Medicine, Nagasaki, Japan
| | - K Maemura
- Nagasaki University, Graduate School of Biomedical Sciences, Department of Cardiovascular Medicine, Nagasaki, Japan
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17
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Kuroki H, Koganei K, Tatsumi K, Futatsuki R, Yamada K, Arai K, Obara N, Kimura H, Sugita A, Fukushima T. [Diagnosis and treatment of six patients with Crohn's disease complicated by recto-perineal-urethral fistula]. Nihon Shokakibyo Gakkai Zasshi 2018; 115:108-116. [PMID: 29353847 DOI: 10.11405/nisshoshi.115.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recto-perineal-urethral fistula caused by Crohn's disease is a rare, for which fundamental treatment has not been established yet. We analyzed the clinical characteristics, diagnosis, treatment, and prognosis of six male patients with anorectal lesions caused by Crohn's disease. Three patients were treated with abdominoperineal resection and the other three with rectal excision without anastomosis. Excluding one case, which presented worsening immediately after surgery, symptoms of urethral fistula improved without urethral stenosis, dysuria, or sexual dysfunction. Recto-perineal-urethral fistula is currently treated with various treatment modalities, including colostomy and drug therapy. Although the evaluation of these modalities is required, abdominoperineal resection or rectal excision without anastomosis may be a valuable treatment option because these approaches improve the urethral fistula while sparing the urethra without any significant complications.
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Affiliation(s)
- Hirosuke Kuroki
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Kazutaka Koganei
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Kenji Tatsumi
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Ryo Futatsuki
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Kyoko Yamada
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Katsuhiko Arai
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Nao Obara
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
| | - Hideaki Kimura
- Inflammatory Bowel Disease Center, Yokohama City University Medical Center
| | - Akira Sugita
- Department of Inflammatory Bowel Disease Center, Yokohama Municipal Citizen's Hospital
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18
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Aizaki M, Otsuki A, Fukushima T, Hosomi M, Muraoka K. Application of Carlson's trophic state index to Japanese lakes and relationships between the index and other parameters. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/03680770.1980.11897067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Furudono S, Mashimo Y, Fukushima T, Kurobe M, Muto S, Suenaga H, Nunohiro T, Takeshita S, Nakashima H, Maemura K. P1123Impact of central and obstructive sleep apnea on long term clinical outcomes in patients with acute myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Furudono S, Mashimo Y, Fukushima T, Kurobe M, Muto S, Suenaga H, Nunohiro T, Takeshita S, Nakashima H, Maemura K. P4633Relationship between circadian variation and plaque characteristics in patients with ST-segment elevation myocardial Infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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21
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Nunohiro T, Mashimo Y, Fukushima T, Kurobe M, Mutoh S, Suenaga H, Furudono S, Takeshita S, Nakashima H. P3356Plaque characteristics in acute myocardial infarction patients with high fatty acid-binding protein 4 level: optical coherence tomography study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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22
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Kawabata KC, Hayashi Y, Inoue D, Meguro H, Sakurai H, Fukuyama T, Tanaka Y, Asada S, Fukushima T, Nagase R, Takeda R, Harada Y, Kitaura J, Goyama S, Harada H, Aburatani H, Kitamura T. High expression of ABCG2 induced by EZH2 disruption has pivotal roles in MDS pathogenesis. Leukemia 2017; 32:419-428. [PMID: 28720764 DOI: 10.1038/leu.2017.227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 06/28/2017] [Accepted: 07/04/2017] [Indexed: 01/10/2023]
Abstract
Both proto-oncogenic and tumor-suppressive functions have been reported for enhancer of zeste homolog 2 (EZH2). To investigate the effects of its inactivation, a mutant EZH2 lacking its catalytic domain was prepared (EZH2-dSET). In a mouse bone marrow transplant model, EZH2-dSET expression in bone marrow cells induced a myelodysplastic syndrome (MDS)-like disease in transplanted mice. Analysis of these mice identified Abcg2 as a direct target of EZH2. Intriguingly, Abcg2 expression alone induced the same disease in the transplanted mice, where stemness genes were enriched. Interestingly, ABCG2 expression is specifically high in MDS patients. The present results indicate that ABCG2 de-repression induced by EZH2 mutations have crucial roles in MDS pathogenesis.
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Affiliation(s)
- K C Kawabata
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan.,Division of Hematology/Medical Oncology, Department of Medicine, Weill-Cornell Medical College, Cornell University, New York, NY, USA
| | - Y Hayashi
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - D Inoue
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan.,Human Oncology and Pathogenesis Program, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - H Meguro
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - H Sakurai
- Division of Hematology, Department of Medicine, Juntendo University, Bunkyo, Japan.,Division of Hemalogy, Shizuoka Hospital, Juntendo University, Izunokuni, Japan
| | - T Fukuyama
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - Y Tanaka
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - S Asada
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - T Fukushima
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - R Nagase
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - R Takeda
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - Y Harada
- Division of Hematology, Department of Medicine, Juntendo University, Bunkyo, Japan.,Department of Clinical Laboratory Medicine, Faculty of Health Science Technology, Bunkyo Gakuin University, Bunkyo, Japan
| | - J Kitaura
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan.,Atopy Research Center, Juntendo University. School of Medicine, Bunkyo-ku, Japan
| | - S Goyama
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - H Harada
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan.,Division of Hematology, Department of Medicine, Juntendo University, Bunkyo, Japan
| | - H Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro, Japan
| | - T Kitamura
- Division of Cellular Therapy, Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
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23
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Suzuki K, Yokoyama J, Kawauchi Y, Honda Y, Sato H, Aoyagi Y, Terai S, Okazaki K, Suzuki Y, Sameshima Y, Fukushima T, Sugahara K, Atreya R, Neurath MF, Watanabe K, Yoneyama H, Asakura H. Phase 1 Clinical Study of siRNA Targeting Carbohydrate Sulphotransferase 15 in Crohn's Disease Patients with Active Mucosal Lesions. J Crohns Colitis 2017; 11:221-228. [PMID: 27484097 DOI: 10.1093/ecco-jcc/jjw143] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 06/27/2016] [Accepted: 07/17/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIMS Carbohydrate sulphotransferase 15 [CHST15] is a specific enzyme biosynthesizing chondroitin sulphate E that binds various pathogenic mediators and is known to create local fibrotic lesions. We evaluated the safety of STNM01, a synthetic double-stranded RNA oligonucleotide directed against CHST15, in Crohn's disease [CD] patients whose mucosal lesions were refractory to conventional therapy. METHODS This was a randomized, double-blind, placebo-controlled, concentration-escalation study of STNM01 by a single-dose endoscopic submucosal injection in 18 CD patients. Cohorts of increasing concentration of STNM01 were enrolled sequentially as 2.5nM [n = 3], 25nM [n = 3], and 250nM [n = 3] were applied. A cohort of placebo [n = 3] was included in each concentration. Safety was monitored for 30 days. Pharmacokinetics was monitored for 24h. The changes from baseline in the segmental Simple Endoscopic Score for CD [SES-CD] as well as the histological fibrosis score were evaluated. RESULTS STNM01 was well tolerated and showed no drug-related adverse effects in any cohort of treated patients. There were no detectable plasma concentrations of STNM01 at all measured time points in all treatment groups. Seven of nine subjects who received STNM01 showed reduction in segmental SES-CD at Day 30, when compared with those who received placebo. Histological analyses of biopsy specimens revealed that STNM01 reduced the extent of fibrosis. CONCLUSION Local application of STNM01 is safe and well tolerated in CD patients with active mucosal lesions.
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Affiliation(s)
- Kenji Suzuki
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Junji Yokoyama
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Yusuke Kawauchi
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Yutaka Honda
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Hiroki Sato
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Yutaka Aoyagi
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Shuji Terai
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
| | - Kazuichi Okazaki
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Yasuo Suzuki
- Internal Medicine, Toho University, Sakura Medical Center, Sakura, Chiba, Japan
| | | | | | - Kazuyuki Sugahara
- Laboratory of Proteoglycan Signaling and Therapeutics, Hokkaido University, Sapporo, Hokkaido, and Department of Pathobiochemistry, Meijo University, Nagoya, Aichi, Japan
| | - Raja Atreya
- Department of Medicine a, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine a, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Kenichi Watanabe
- Department of Clinical Pharmacology, Niigata University of Pharmacy and Applied Life Science, Niigata, Niigata, Japan
| | | | - Hitoshi Asakura
- Department of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Niigata, Japan
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24
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Obara N, Koganei K, Tatsumi K, Futatsuki R, Kuroki H, Yamada K, Arai K, Sugita A, Hayashi H, Fukushima T. A case of Crohn's disease complicated with simultaneous double cancers of the small bowel. Nihon Shokakibyo Gakkai Zasshi 2016; 113:1901-1908. [PMID: 27829602 DOI: 10.11405/nisshoshi.113.1901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A case of Crohn's disease complicated with simultaneous double cancers of the small bowel is reported. The patient is a 66-year-old man who had suffered from Crohn's disease for 20 years. He underwent surgery to identify the source of repeated episodes of intestinal obstruction. Two short segments of strictures and proximal dilatations were found in the distal ileum. Therefore, we performed an en bloc resection of the two stenotic sections instead of strictureplasty. Histological examination of the resected specimen revealed not only Crohn's disease but also a well-differentiated adenocarcinoma within each of the two strictures. One had invaded to the muscular layer and the other to the subserosal layer. In cases of Crohn's disease with longstanding stenosis, the probability of carcinoma should be considered.
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Affiliation(s)
- Nao Obara
- Department of Inflammatory Bowel Disease, Yokohama Municipal Citizen's Hospital
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25
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Ohta T, Yachi K, Fukushima T, Watanabe T, Ohgaki H. P09.01 Alterations of the RRAS and ERCC1 Genes at 19q13 in Gemistocytic Astrocytomas. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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26
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Harada S, Isayama Y, Kitagawa H, Morii M, Fukushima T. The Effect of Tertiary Amine Catalyst Systems for Lower Density Rigid Foam with HCFC-141b. J CELL PLAST 2016. [DOI: 10.1177/0021955x9503100206] [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: 11/16/2022]
Abstract
The replacement of blowing agent from CFC-11 to HCFCs is proceeding in rigid polyurethane foam applications in order to meet the revised Montreal Protocol. The foams using HCFCs, however, have about 5 to 10% higher thermal conductivity than that using CFC, owing to the high thermal conductivity of HCFCs. Though improved HCFC blown foams have realized similar thermal conductivity to conventional CFC-11 blown foams, these foams have about 15 to 20% higher densities. This performance level can not be accepted as an insulation foam for refrigeration appliances. Kao Corporation has developed new catalyst systems, which is Kaolizer KLP-200 series. The use of our new catalysts for HCFC-141b blown foams can realize low thermal conductivity, derived from formation of finer cell structure by acceleration of initial gelling reaction, and has performance to improve flowability in the foaming process at the same time. These characteristics give about 10 to 15% lower density foams than that using conventional catalysts in comparison with similar thermal conductivity. In addition, the formulation using Kaolizer KLP-200K can reduce the level of HCFC-141b compared with that using conventional catalysts to obtain the expected thermal conductivity of the foams, provided these foams have the same density. This paper describes the effect of Kaolizer KLP-200K for HCFC-141b blown rigid foam. The system using Kaolizer KLP-200K results in lower density foam and reduced HCFC-141b compared to that using conventional catalysts. Moreover, Kaolizer KLP-200 is effective for cyclopentane blown rigid foam.
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Affiliation(s)
| | | | | | | | - T. Fukushima
- Kao Corporation, Performance Chemical Research Laboratory, 1334 Minato, Wakayama 640, Japan
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27
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Takahashi Y, Kanemaru Y, Fukushima T, Eguchi K, Miller-Holt J. Chemical and in vitro toxicological analysis of the vapor from a novel tobacco vaporizer with tobacco capsule. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.2091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Matsunaga N, Hayashi K, Aikawa H, Uetani M, Iwao M, Matsuoka Y, Hombo A, Fukushima T, Maeda H. Digital Subtraction Angiography in Takayasu Arteritis. Acta Radiol 2016. [DOI: 10.1177/028418518702800305] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The usefulness and limitation of digital subtraction angiography (DSA) in Takayasu arteritis were investigated in 32 patients. Intravenous DSA was particularly useful in the follow-up of patients with an established diagnosis of Takayasu arteritis. Pulmonary arterial involvement could also be demonstrated with intravenous DSA as obstructive arterial changes and lack of accumulation of contrast medium in the pulmonary parenchyma. Detailed information concerning the site and extent of vascular involvement and development of collateral vessels were obtained with intraarterial DSA. Thickening of the thoracic aortic wall, however, could not be recognized with either intravenous or intraarterial DSA. Conventional angiography of the descending thoracic aorta is still required as an initial examination, particularly when there is no aortic arch involvement. However, there is no doubt that DSA has the potential to become the diagnostic procedure of choice in Takayasu arteritis.
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Harada S, Isayama Y, Kitagawa H, Morii M, Fukushima T. The Effect of Tertiary Amine Catalyst Systems for Lower Density Rigid Foam with HCFC-141b. J CELL PLAST 2016. [DOI: 10.1177/0021955x9302900591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Girnita L, Takahashi SI, Crudden C, Fukushima T, Worrall C, Furuta H, Yoshihara H, Hakuno F, Girnita A. Chapter Seven - When Phosphorylation Encounters Ubiquitination: A Balanced Perspective on IGF-1R Signaling. Prog Mol Biol Transl Sci 2016; 141:277-311. [PMID: 27378760 DOI: 10.1016/bs.pmbts.2016.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cell-surface receptors govern the critical information passage from outside to inside the cell and hence control important cellular decisions such as survival, growth, and differentiation. These receptors, structurally grouped into different families, utilize common intracellular signaling-proteins and pathways, yet promote divergent biological consequences. In rapid processing of extracellular signals to biological outcomes, posttranslational modifications offer a repertoire of protein processing options. Protein ubiquitination was originally identified as a signal for protein degradation through the proteasome system. It is now becoming increasingly recognized that both ubiquitin and ubiquitin-like proteins, all evolved from a common ubiquitin structural superfold, are used extensively by the cell and encompass signal tags for many different cellular fates. In this chapter we examine the current understanding of the ubiquitin regulation surrounding the insulin-like growth factor and insulin signaling systems, major members of the larger family of receptor tyrosine kinases (RTKs) and key regulators of fundamental physiological and pathological states.
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Affiliation(s)
- L Girnita
- Department of Oncology and Pathology, Cancer Center Karolinska, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
| | - S-I Takahashi
- Departments of Animal Sciences and Applied Biological Chemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - C Crudden
- Department of Oncology and Pathology, Cancer Center Karolinska, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - T Fukushima
- Departments of Animal Sciences and Applied Biological Chemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan; Department of Biological Sciences, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Kanagawa, Japan
| | - C Worrall
- Department of Oncology and Pathology, Cancer Center Karolinska, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - H Furuta
- Departments of Animal Sciences and Applied Biological Chemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - H Yoshihara
- Departments of Animal Sciences and Applied Biological Chemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - F Hakuno
- Departments of Animal Sciences and Applied Biological Chemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - A Girnita
- Department of Oncology and Pathology, Cancer Center Karolinska, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden; Dermatology Department, Karolinska University Hospital, Stockholm, Sweden
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31
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Miyagi T, Itonaga H, Aosai F, Taguchi J, Norose K, Mochizuki K, Fujii H, Furumoto A, Ohama M, Karimata K, Yamanoha A, Taniguchi H, Sato S, Taira N, Moriuchi Y, Fukushima T, Masuzaki H, Miyazaki Y. Successful treatment of toxoplasmic encephalitis diagnosed early by polymerase chain reaction after allogeneic hematopoietic stem cell transplantation: two case reports and review of the literature. Transpl Infect Dis 2015; 17:593-8. [PMID: 25970830 DOI: 10.1111/tid.12401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 03/31/2015] [Accepted: 04/17/2015] [Indexed: 11/26/2022]
Abstract
Toxoplasmic encephalitis represents a rare, but often fatal infection after allogeneic hematopoietic stem cell transplantation. Polymerase chain reaction (PCR)-based preemptive therapy is considered promising for this disease, but is not routinely applied, especially in low seroprevalence countries including Japan. We encountered 2 cases of toxoplasmic encephalitis after transplantation that were successfully treated. The diagnosis of toxoplasmic encephalitis in these cases was confirmed by PCR testing when neurological symptoms were observed. Both patients received pyrimethamine and sulfadiazine treatments within 2 weeks of the development of neurological symptoms, and remained free of recurrence for 32 and 12 months. These results emphasized the importance of the PCR test and immediate treatment after diagnosis for the management of toxoplasmic encephalitis.
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Affiliation(s)
- T Miyagi
- Department of Hematology, Heartlife Hospital, Okinawa, Japan
| | - H Itonaga
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - F Aosai
- Department of Infection and Host Defense, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Infection and Host Defense, Graduate School of Medicine, Shinshu University, Matsumoto, Japan
| | - J Taguchi
- Department of Hematology, Atomic Bomb Disease and Hibakusha Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki City, Japan
| | - K Norose
- Department of Infection and Host Defense, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - K Mochizuki
- Department of Infectious Disease, Nagasaki University Hospital, Nagasaki, Japan
| | - H Fujii
- Department of Infectious Disease, Nagasaki University Hospital, Nagasaki, Japan
| | - A Furumoto
- Department of Infectious Disease, Nagasaki University Hospital, Nagasaki, Japan
| | - M Ohama
- Department of Hematology, Heartlife Hospital, Okinawa, Japan
| | - K Karimata
- Department of Hematology, Heartlife Hospital, Okinawa, Japan
| | - A Yamanoha
- Department of Hematology, Heartlife Hospital, Okinawa, Japan
| | - H Taniguchi
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - S Sato
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - N Taira
- Department of Hematology, Heartlife Hospital, Okinawa, Japan
| | - Y Moriuchi
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - T Fukushima
- Laboratory of Hematoimmunology, Department of Clinical Laboratory Sciences, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - H Masuzaki
- Division of Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology (Second Department of Medicine), Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Y Miyazaki
- Department of Hematology, Atomic Bomb Disease and Hibakusha Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki City, Japan
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Seiki N, Shoji Y, Kajitani T, Ishiwari F, Kosaka A, Hikima T, Takata M, Someya T, Fukushima T. Rational synthesis of organic thin films with exceptional long-range structural integrity. Science 2015; 348:1122-6. [DOI: 10.1126/science.aab1391] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Matsushima T, Kitamura K, Fukui M, Kinoshita K, Fukushima T, Kuromatsu C, Maeyama R, Hasuo K. Choroid plexus papillomas. Prog Exp Tumor Res 2015; 30:181-93. [PMID: 3628805 DOI: 10.1159/000413676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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34
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Sugita A, Koganei K, Tatsumi K, Futatsuki R, Kuroki H, Yamada K, Arai K, Fukushima T. [Recent advances in medical and surgical treatment of ulcerative colitis]. Nihon Geka Gakkai Zasshi 2015; 116:99-103. [PMID: 26050509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recent advances in both medical and surgical treatment of ulcerative colitis have been remarkable. Changes in medical treatment are mainly good results of therapy with the anti-TNF-α antibody, tacrolimus, and those in surgical treatment are an expansion of the surgical indications to include patients with intractable disease, such as treatment refractoriness and chronic corticosteroid dependence, by a better postoperative clinical course after pouch surgery, improred selection of surgical procedures and the timing of surgery in elderly patients. To offer the optimal treatment for patients with ulcerative colitis, new medical therapies should be analyzed from the standpoint of the efficacy and limitations of effect. Long postoperative clinical course of surgical patients including colitic cancer, prevention of postoperative complications should be also analyzed.
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Fukushima T, Shinya H, Fujii H, Sato K, Katayama-Yoshida H, Dederichs PH. First principles studies of GeTe based dilute magnetic semiconductors. J Phys Condens Matter 2015; 27:015501. [PMID: 25427963 DOI: 10.1088/0953-8984/27/1/015501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The electronic structure and magnetic properties of GeTe-based dilute magnetic semiconductors (DMS) are investigated by the Korringa-Kohn-Rostoker Green's function method and the projector augmented wave method. Our calculations for the formation energies of transition metal impurities (TM) in GeTe indicate that the solubilities of TM are quite high compared to typical III-V and II-VI based DMS and that the TM doped GeTe has a possibility of room temperature ferromagnetism with high impurity concentrations. The high solubilities originate from the fact that the top of the valence bands of GeTe consists of the Te-5p anti-bonding states which are favorable to acceptor doping. (Ge, Cr)Te system shows strong ferromagnetic interaction by the double exchange mechanism and is a good candidate for DMS with high Curie temperature. Additionally, in the case of (Ge, Mn)Te with the d(5) configuration, by introducing the Ge vacancies the p-d exchange interaction is activated and it dominates the antiferromagnetic superexchange, resulting in ferromagnetic exchange interactions between Mn. This explains recent experimental results reasonably. Based on the accurate estimation of the Curie temperatures by Monte Carlo simulation for the classical Heisenberg model with the calculated exchange coupling constants, we discuss the relevance of the TM doped GeTe for semiconductor spintronics.
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Affiliation(s)
- T Fukushima
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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Fukushima T, Gomi D, Kobayashi T, Sekiguchi N, Sakamoto A, Sasaki S, Koizumi T. Successful Salvage Chemotherapy with Amrubicin for Invasive Thymoma Associated with Myasthenia Gravis. Jpn J Clin Oncol 2014; 44:1120-1122. [DOI: 10.1093/jjco/hyu136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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37
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Tsuji M, Mori Y, Kanda H, Ito T, Hidaka T, Kakamu T, Kumagai T, Hayakawa T, Osaki Y, Fukushima T. Determine whether nicotine metabolism can be a key to quitting smoking. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku164.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Fukushima T, Katayama-Yoshida H, Uede H, Takawashi Y, Nakanishi A, Sato K. Computational materials design of negative effective U system in hole-doped chalcopyrite CuFeS2. J Phys Condens Matter 2014; 26:355502. [PMID: 25109352 DOI: 10.1088/0953-8984/26/35/355502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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 general rule of negative effective U(U(eff)) system caused by (i) exchange correlation and (ii) charge excitation mechanisms is proposed. Based on the general rule, we perform ab initio electronic structure calculations by generalized gradient approximation (GGA) + U method for hole-doped chalcopyrite CuFeS2 [Cu(+)(d(10))Fe(3+)(d(5))S(2-)(s(2)p(6))2]. It is found from our calculations that the hole-doped CuFeS2 has the negative U(eff) = -0.44 eV, where U(eff) ≡ E(N + 1) + E(N - 1) - 2E(N) < 0 and E(N) is the total energy of the hole-doped CuFeS2. The negative U(eff) is caused by the charge-excitation in the hole-doped Cu(2+)(d(9)) and S(-)(s(2)p(5)), and also caused by the exchange-correlation in the hole-doped Fe(4+)(d(4)). The strong attractive electron-electron interaction (U(eff) = -0.44 eV ∼ -5000 K) originates from the purely electronic mechanism. The closed shell of the d(10) electronic configuration is more stable than the d(9) electronic configuration, since the first excited state with the d(9)s(1) electronic configuration and the ground state with the d(10) electronic configuration are very close, then these two states repel very strongly through the second order perturbation. Therefore, the spin-polarized total energy curve for the hole-doped CuFeS2 shows the strong upward convexity with N - 1, N and N + 1 electronic configurations leading to the negative U(eff). The hole-doped paramagnetic and metallic CuFeS2 with the negative U(eff) may cause a possible high-Tc superconductor (Tc ∼ 1000 K, if 2Δ/kBTc ≈ 10 by assuming a strong coupling regime) because of the strong attractive electron-electron interactions (superconducting gap Δ ≈ |U(eff|) ∼ 5000 K). Finally, we propose a new computational materials design methodology to design ultra high-Tc superconductors by using three steps starting from the atomic number only.
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Affiliation(s)
- T Fukushima
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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39
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Ochiai Y, Sano E, Yamamuro S, Ogino A, Fukushima T, Tsumoto K, Ueda T, Yutaka O, Yoshino A, Yoichi K. P17.63 * COMBINATION THERAPY WITH TEMOZOLOMIDE, INTERFERON-BETA, AND RIBAVIRIN IN GLIOMA CELL LINES. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Fukushima T, Katayama-Yoshida H, Sato K, Bihlmayer G, Mavropoulos P, Bauer DSG, Zeller R, Dederichs PH. Hubbard U calculations for gap states in dilute magnetic semiconductors. J Phys Condens Matter 2014; 26:274202. [PMID: 24935614 DOI: 10.1088/0953-8984/26/27/274202] [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: 06/03/2023]
Abstract
On the basis of constrained density functional theory, we present ab initio calculations for the Hubbard U parameter of transition metal impurities in dilute magnetic semiconductors, choosing Mn in GaN as an example. The calculations are performed by two methods: (i) the Korringa-Kohn-Rostoker (KKR) Green function method for a single Mn impurity in GaN and (ii) the full-potential linearized augmented plane-wave (FLAPW) method for a large supercell of GaN with a single Mn impurity in each cell. By changing the occupancy of the majority t2 gap state of Mn, we determine the U parameter either from the total energy differences E(N + 1) and E(N - 1) of the (N ± 1)-electron excited states with respect to the ground state energy E(N), or by using the single-particle energies for n(0) ± 1/2 occupancies around the charge-neutral occupancy n0 (Janak's transition state model). The two methods give nearly identical results. Moreover the values calculated by the supercell method agree quite well with the Green function values. We point out an important difference between the 'global' U parameter calculated using Janak's theorem and the 'local' U of the Hubbard model.
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Affiliation(s)
- T Fukushima
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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41
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Itonaga H, Imanishi D, Wong YF, Sato S, Ando K, Sawayama Y, Sasaki D, Tsuruda K, Hasegawa H, Imaizumi Y, Taguchi J, Tsushima H, Yoshida S, Fukushima T, Hata T, Moriuchi Y, Yanagihara K, Miyazaki Y. Expression of myeloperoxidase in acute myeloid leukemia blasts mirrors the distinct DNA methylation pattern involving the downregulation of DNA methyltransferase DNMT3B. Leukemia 2014; 28:1459-66. [PMID: 24457336 DOI: 10.1038/leu.2014.15] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 12/19/2013] [Indexed: 12/21/2022]
Abstract
Myeloperoxidase (MPO) has been associated with both a myeloid lineage commitment and favorable prognosis in patients with acute myeloid leukemia (AML). DNA methyltransferase inhibitors (decitabine and zeburaline) induced MPO gene promoter demethylation and MPO gene transcription in AML cells with low MPO activity. Therefore, MPO gene transcription was directly and indirectly regulated by DNA methylation. A DNA methylation microarray subsequently revealed a distinct methylation pattern in 33 genes, including DNA methyltransferase 3 beta (DNMT3B), in CD34-positive cells obtained from AML patients with a high percentage of MPO-positive blasts. Based on the inverse relationship between the methylation status of DNMT3B and MPO, we found an inverse relationship between DNMT3B and MPO transcription levels in CD34-positive AML cells (P=0.0283). In addition, a distinct methylation pattern was observed in five genes related to myeloid differentiation or therapeutic sensitivity in CD34-positive cells from AML patients with a high percentage of MPO-positive blasts. Taken together, the results of the present study indicate that MPO may serve as an informative marker for identifying a distinct and crucial DNA methylation profile in CD34-positive AML cells.
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MESH Headings
- Antigens, CD34/metabolism
- Bone Marrow/pathology
- Bone Marrow Cells/metabolism
- Bone Marrow Cells/pathology
- CCAAT-Enhancer-Binding Proteins/genetics
- Cell Line, Tumor
- Cluster Analysis
- DNA (Cytosine-5-)-Methyltransferases/genetics
- DNA (Cytosine-5-)-Methyltransferases/metabolism
- DNA Methylation
- Epigenesis, Genetic
- Gene Expression Profiling
- Gene Expression Regulation, Leukemic
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Mutation
- Nuclear Proteins/genetics
- Nucleophosmin
- Peroxidase/genetics
- Peroxidase/metabolism
- fms-Like Tyrosine Kinase 3/genetics
- DNA Methyltransferase 3B
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Affiliation(s)
- H Itonaga
- 1] Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan [2] Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - D Imanishi
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y-F Wong
- Laboratory for Stem Cell Biology, RIKEN Center for Development Biology, Kobe, Japan
| | - S Sato
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - K Ando
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Sawayama
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - D Sasaki
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - K Tsuruda
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Hasegawa
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Imaizumi
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - J Taguchi
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Tsushima
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - S Yoshida
- Department of Internal Medicine, National Hospital Organization Nagasaki Medical Center, Ohmura, Japan
| | - T Fukushima
- School of Health Sciences, University of the Ryukyus, Nishihara, Japan
| | - T Hata
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Moriuchi
- Department of Hematology, Sasebo City General Hospital, Sasebo, Japan
| | - K Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Miyazaki
- Department of Hematology, Atomic Bomb Disease and Hibakusya Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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42
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Tatsumi K, Sugita A, Koganei K, Futatsuki R, Kuroki H, Yamada K, Nakao S, Sako M, Kimura H, Arai K, Fukushima T. [Long-term outcomes of ileal pouch-anal canal anastomosis in children with ulcerative colitis]. Nihon Shokakibyo Gakkai Zasshi 2013; 110:2081-2088. [PMID: 24305096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The present study investigated the long-term outcomes of restorative proctocolectomy in pediatric patients with ulcerative colitis (UC). We report a series of 25 patients who underwent total proctocolectomy with ileal pouch-anal canal anastomosis (IACA). Surgery was performed for medically intractable colitis and severe colitis in 14 and 11 patients, respectively. Early and late complications were observed in 6 (24%) and 14 (56%) patients, respectively. The long-term quality of life outcomes were satisfactory, including both bowel function and social function. Growth retardation was observed in 6 patients. Five patients exhibited catch-up growth and 3 patients overcame growth retardation. Patients with growth retardation tended to have a younger onset and longer duration of UC, as well as a longer duration and higher total dose of steroid use. In conclusion, the long-term outcomes of pediatric patients with UC undergoing IACA are satisfactory. Furthermore, to minimize the risk of growth retardation, surgery should be performed without delay.
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Affiliation(s)
- Kenji Tatsumi
- Department of Surgery, Yokohama Municipal Citizen's Hospital
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43
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Misaka S, Miyazaki N, Fukushima T, Yamada S, Kimura J. Effects of green tea extract and (-)-epigallocatechin-3-gallate on pharmacokinetics of nadolol in rats. Phytomedicine 2013; 20:1247-1250. [PMID: 23920278 DOI: 10.1016/j.phymed.2013.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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: 02/25/2013] [Revised: 05/16/2013] [Accepted: 07/02/2013] [Indexed: 06/02/2023]
Abstract
Green tea catechins have been shown to affect the activities of drug transporters in vitro, including P-glycoprotein and organic anion transporting polypeptides. However, it remains unclear whether catechins influence the in vivo disposition of substrate drugs for these transporters. In the present study, we investigated effects of green tea extract (GTE) and (-)-epigallocatechin-3-gallate (EGCG) on pharmacokinetics of a non-selective hydrophilic β-blocker nadolol, which is reported to be a substrate for several drug transporters and is not metabolized by cytochrome P450 enzymes. Male Sprague-Dawley rats received GTE (400 mg/kg), EGCG (150 mg/kg) or saline (control) by oral gavage, 30 min before a single intragastric administration of 10 mg/kg nadolol. Plasma and urinary concentrations of nadolol were determined using high performance liquid chromatography. Pharmacokinetic parameters were estimated by a noncompartmental analysis. Pretreatment with GTE resulted in marked reductions in the maximum concentration (Cmax) and area under the time-plasma concentration curve (AUC) of nadolol by 85% and 74%, respectively, as compared with control. In addition, EGCG alone significantly reduced Cmax and AUC of nadolol. Amounts of nadolol excreted into the urine were decreased by pretreatments with GTE and EGCG, while the terminal half-life of nadolol was not different among groups. These results suggest that the coadministration with green tea catechins, particularly EGCG, causes a significant alteration in the pharmacokinetics of nadolol, possibly through the inhibition of its intestinal absorption mediated by uptake transporters.
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Affiliation(s)
- S Misaka
- Department of Pharmacology, School of Medicine, Fukushima Medical University, Fukushima, Japan.
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Agarwal M, Nitta R, Dovat S, Li G, Arita H, Narita Y, Fukushima S, Tateishi K, Matsushita Y, Yoshida A, Miyakita Y, Ohno M, Collins VP, Kawahara N, Shibui S, Ichimura K, Kahn SA, Gholamin S, Junier MP, Chneiweiss H, Weissman I, Mitra S, Cheshier S, Avril T, Hamlat A, Le Reste PJ, Mosser J, Quillien V, Carrato C, Munoz-Marmol A, Serrano L, Pijuan L, Hostalot C, Villa SL, Ariza A, Etxaniz O, Balana C, Benveniste ET, Zheng Y, McFarland B, Drygin D, Bellis S, Bredel M, Lotsch D, Engelmaier C, Allerstorfer S, Grusch M, Pichler J, Weis S, Hainfellner J, Marosi C, Spiegl-Kreinecker S, Berger W, Bronisz A, Nowicki MO, Wang Y, Ansari K, Chiocca EA, Godlewski J, Brown K, Kwatra M, Brown K, Kwatra M, Bui T, Nitta R, Li G, Zhu S, Kozono D, Li J, Kushwaha D, Carter B, Chen C, Schulte J, Srikanth M, Das S, Zhang J, Lathia J, Yin L, Rich J, Olson E, Kessler J, Chenn A, Cherry A, Haas B, Lin YH, Ong SE, Stella N, Cifarelli CP, Griffin RJ, Cong D, Zhu W, Shi Y, Clark P, Kuo J, Hu S, Sun D, Bookland M, Darbinian N, Dey A, Robitaille M, Remke M, Faury D, Maier C, Malhotra A, Jabado N, Taylor M, Angers S, Kenney A, Ren X, Zhou H, Schur M, Baweja A, Singh M, Erdreich-Epstein A, Fu J, Koul D, Yao J, Saito N, Zheng S, Verhaak R, Lu Z, Yung WKA, Gomez G, Volinia S, Croce C, Brennan C, Cavenee W, Furnari F, Lopez SG, Qu D, Petritsch C, Gonzalez-Huarriz M, Aldave G, Ravi D, Rubio A, Diez-Valle R, Marigil M, Jauregi P, Vera B, Rocha AADL, Tejada-Solis S, Alonso MM, Gopal U, Isaacs J, Gruber-Olipitz M, Dabral S, Ramkissoon S, Kung A, Pak E, Chung J, Theisen M, Sun Y, Monrose V, Franchetti Y, Sun Y, Shulman D, Redjal N, Tabak B, Beroukhim R, Zhao J, Buonamici S, Ligon K, Kelleher J, Segal R, Haas B, Canton D, Diaz P, Scott J, Stella N, Hara K, Kageji T, Mizobuchi Y, Kitazato K, Okazaki T, Fujihara T, Nakajima K, Mure H, Kuwayama K, Hara T, Nagahiro S, Hill L, Botfield H, Hossain-Ibrahim K, Logan A, Cruickshank G, Liu Y, Gilbert M, Kyprianou N, Rangnekar V, Horbinski C, Hu Y, Vo C, Li Z, Ke C, Ru N, Hess KR, Linskey ME, Zhou YAH, Hu F, Vinnakota K, Wolf S, Kettenmann H, Jackson PJ, Larson JD, Beckmann DA, Moriarity BS, Largaespada DA, Jalali S, Agnihotri S, Singh S, Burrell K, Croul S, Zadeh G, Kang SH, Yu MO, Song NH, Park KJ, Chi SG, Chung YG, Kim SK, Kim JW, Kim JY, Kim JE, Choi SH, Kim TM, Lee SH, Kim SK, Park SH, Kim IH, Park CK, Jung HW, Koldobskiy M, Ahmed I, Ho G, Snowman A, Raabe E, Eberhart C, Snyder S, Agnihotri S, Gugel I, Remke M, Bornemann A, Pantazis G, Mack S, Shih D, Sabha N, Taylor M, Tatagiba M, Zadeh G, Krischek B, Schulte A, Liffers K, Kathagen A, Riethdorf S, Westphal M, Lamszus K, Lee JS, Xiao J, Patel P, Schade J, Wang J, Deneen B, Erdreich-Epstein A, Song HR, Leiss L, Gjerde C, Saed H, Rahman A, Lellahi M, Enger PO, Leung R, Gil O, Lei L, Canoll P, Sun S, Lee D, Ho ASW, Pu JKS, Zhang XQ, Lee NP, Dat PJR, Leung GKK, Loetsch D, Steiner E, Holzmann K, Spiegl-Kreinecker S, Pirker C, Hlavaty J, Petznek H, Hegedus B, Garay T, Mohr T, Sommergruber W, Grusch M, Berger W, Lukiw WJ, Jones BM, Zhao Y, Bhattacharjee S, Culicchia F, Magnus N, Garnier D, Meehan B, McGraw S, Hashemi M, Lee TH, Milsom C, Gerges N, Jabado N, Trasler J, Pawlinski R, Mackman N, Rak J, Maherally Z, Thorne A, An Q, Barbu E, Fillmore H, Pilkington G, Maherally Z, Tan SL, Tan S, An Q, Fillmore H, Pilkington G, Malhotra A, Choi S, Potts C, Ford DA, Nahle Z, Kenney AM, Matlaf L, Khan S, Zider A, Singer E, Cobbs C, Soroceanu L, McFarland BC, Hong SW, Rajbhandari R, Twitty GB, Gray GK, Yu H, Benveniste EN, Nozell SE, Minata M, Kim S, Mao P, Kaushal J, Nakano I, Mizowaki T, Sasayama T, Tanaka K, Mizukawa K, Nishihara M, Nakamizo S, Tanaka H, Kohta M, Hosoda K, Kohmura E, Moeckel S, Meyer K, Leukel P, Bogdahn U, Riehmenschneider MJ, Bosserhoff AK, Spang R, Hau P, Mukasa A, Watanabe A, Ogiwara H, Saito N, Aburatani H, Mukherjee J, Obha S, See W, Pieper R, Nakajima K, Hara K, Kageji T, Mizobuchi Y, Kitazato K, Fujihara T, Otsuka R, Kung D, Nagahiro S, Rajbhandari R, Sinha T, Meares G, Benveniste EN, Nozell S, Ott M, Litzenburger U, Rauschenbach K, Bunse L, Pusch S, Ochs K, Sahm F, Opitz C, von Deimling A, Wick W, Platten M, Peruzzi P, Chiocca EA, Godlewski J, Read R, Fenton T, Gomez G, Wykosky J, Vandenberg S, Babic I, Iwanami A, Yang H, Cavenee W, Mischel P, Furnari F, Thomas J, Ronellenfitsch MW, Thiepold AL, Harter PN, Mittelbronn M, Steinbach JP, Rybakova Y, Kalen A, Sarsour E, Goswami P, Silber J, Harinath G, Aldaz B, Fabius AWM, Turcan S, Chan TA, Huse JT, Sonabend AM, Bansal M, Guarnieri P, Lei L, Soderquist C, Leung R, Yun J, Kennedy B, Sisti J, Bruce S, Bruce R, Shakya R, Ludwig T, Rosenfeld S, Sims PA, Bruce JN, Califano A, Canoll P, Stockhausen MT, Kristoffersen K, Olsen LS, Poulsen HS, Stringer B, Day B, Barry G, Piper M, Jamieson P, Ensbey K, Bruce Z, Richards L, Boyd A, Sufit A, Burleson T, Le JP, Keating AK, Sundstrom T, Varughese JK, Harter P, Prestegarden L, Petersen K, Azuaje F, Tepper C, Ingham E, Even L, Johnson S, Skaftnesmo KO, Lund-Johansen M, Bjerkvig R, Ferrara K, Thorsen F, Takeshima H, Yamashita S, Yokogami K, Mizuguchi S, Nakamura H, Kuratsu J, Fukushima T, Morishita K, Tanaka H, Sasayama T, Tanaka K, Nakamizo S, Mizukawa K, Kohmura E, Tang Y, Vaka D, Chen S, Ponnuswami A, Cho YJ, Monje M, Tateishi K, Narita Y, Nakamura T, Cahill D, Kawahara N, Ichimura K, Tiemann K, Hedman H, Niclou SP, Timmer M, Tjiong R, Rohn G, Goldbrunner R, Timmer M, Tjiong R, Stavrinou P, Rohn G, Perrech M, Goldbrunner R, Tokita M, Mikheev S, Sellers D, Mikheev A, Kosai Y, Rostomily R, Tritschler I, Seystahl K, Schroeder JJ, Weller M, Wade A, Robinson AE, Phillips JJ, Gong Y, Ma Y, Cheng Z, Thompson R, Wang J, Fan QW, Cheng C, Gustafson W, Charron E, Zipper P, Wong R, Chen J, Lau J, Knobbe-Thosen C, Weller M, Jura N, Reifenberger G, Shokat K, Weiss W, Wu S, Fu J, Zheng S, Koul D, Yung WKA, Wykosky J, Hu J, Taylor T, Villa GR, Gomez G, Mischel PS, Gonias SL, Cavenee W, Furnari F, Yamashita D, Kondo T, Takahashi H, Inoue A, Kohno S, Harada H, Ohue S, Ohnishi T, Li P, Ng J, Yuelling L, Du F, Curran T, Yang ZJ, Zhu D, Castellino RC, Van Meir EG, Zhu W, Begum G, Wang Q, Clark P, Yang SS, Lin SH, Kahle K, Kuo J, Sun D. CELL BIOLOGY AND SIGNALING. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nagaoka M, Kakuda N, Hayashi Y, Futatsubashi G, Fukushima T, Watanabe K. Consideration of mechanisms of muscular rigidity in Parkinson's disease. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fukushima T, Sumihiro Y, Koyanagi K, Hashimoto N, Kimura Y, Sakai T. Development of a Direct Polycondensation Process for Poly (L-lactic acid). INT POLYM PROC 2013. [DOI: 10.3139/217.1615] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Poly(L-lactic acid) (PLLA) is quite promising for use as biodegradable and non-petroleum derived plastics. In this study we developed an innovative two-step polycondensation process so as to produce economically PLLA with high molecular weight. The process is composed of both melt polycondensation under the lactide-re ux and solid-phase polycondensation. First we studied a direct polycondensation of L-lactic acid with a small amount of solvent, using a mixture of L-lactic acid as raw material, diphenyl ether as solvent, Tin (II) chloride dihydrate as catalyst, and p-toluene sulfonic acid as a discoloration prevention agent. After the dehydrative oligomerization of L-lactic acid, the polycondensation of the oligocondensates and solid-phase post-polycondensation, PLLA of Mw = 266,000 could be obtained. Then, we carried out direct bulk polycondensation tests from L-lactic acid without any solvent added. After optimization of the reaction conditions, PLLA with Mw = 134,000 was successfully produced by the melt-poly-condensation of L-lactic acid accompanied by solid-phase post-poly-condensation. In both systems, the lactide-re ux was indispensable for promoting dehydration/water removal. The re uent lactide was taken into the polymer-chain by trans-esterification reaction during the melt-poly-condesation. Furthermore, the catalyst was allowed to deactivate and stabilize during the solid-phase polymerization to cause the Mw growth.
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Affiliation(s)
| | - Y. Sumihiro
- The Japan Steel Works Ltd., Hiroshima, Japan
| | - K. Koyanagi
- The Japan Steel Works Ltd., Hiroshima, Japan
| | | | - Y. Kimura
- Department of Polymer Science and Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - T. Sakai
- The Japan Steel Works Ltd., Hiroshima, Japan
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Izawa J, Uchino S, Fujii T, Arii T, Fukushima T, Kawano S. Thorough evaluation for the new acute kidney injury criteria by Kidney Disease Improving Global Outcomes. Crit Care 2013. [PMCID: PMC3642968 DOI: 10.1186/cc12348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Zomorodi A, Nonaka Y, Friedman A, Sampson J, Fukushima T. Surgical Management of Vestibular Schwannomas after Failed Radiation. Skull Base Surg 2013. [DOI: 10.1055/s-0033-1336256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sugita A, Koganei K, Tatsumi K, Yamada K, Futatsuki R, Kuroki H, Kimura H, Kitou F, Fukushima T. [Management of rectal cancer including cancer in the anal fistula with Crohn's disease]. Nihon Shokakibyo Gakkai Zasshi 2013; 110:396-402. [PMID: 23459533] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- Akira Sugita
- Department of Surgery, Yokohama Municipal Hospital, Japan.
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Hanada H, Muramatsu S, Abe T, Fukushima T. Robertsonian chromosome polymorphism found in a local herd of the Japanese Black cattle. ACTA ACUST UNITED AC 2012; 13:205-11. [PMID: 22896201 PMCID: PMC2718001 DOI: 10.1186/1297-9686-13-3-205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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