1
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Albert C, Bracaglia L, Koide A, DiRito J, Lysyy T, Harkins L, Edwards C, Richfield O, Grundler J, Zhou K, Denbaum E, Ketavarapu G, Hattori T, Perincheri S, Langford J, Feizi A, Haakinson D, Hosgood SA, Nicholson ML, Pober JS, Saltzman WM, Koide S, Tietjen GT. Monobody adapter for functional antibody display on nanoparticles for adaptable targeted delivery applications. Nat Commun 2022; 13:5998. [PMID: 36220817 PMCID: PMC9553936 DOI: 10.1038/s41467-022-33490-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 09/20/2022] [Indexed: 11/08/2022] Open
Abstract
Vascular endothelial cells (ECs) play a central role in the pathophysiology of many diseases. The use of targeted nanoparticles (NPs) to deliver therapeutics to ECs could dramatically improve efficacy by providing elevated and sustained intracellular drug levels. However, achieving sufficient levels of NP targeting in human settings remains elusive. Here, we overcome this barrier by engineering a monobody adapter that presents antibodies on the NP surface in a manner that fully preserves their antigen-binding function. This system improves targeting efficacy in cultured ECs under flow by >1000-fold over conventional antibody immobilization using amine coupling and enables robust delivery of NPs to the ECs of human kidneys undergoing ex vivo perfusion, a clinical setting used for organ transplant. Our monobody adapter also enables a simple plug-and-play capacity that facilitates the evaluation of a diverse array of targeted NPs. This technology has the potential to simplify and possibly accelerate both the development and clinical translation of EC-targeted nanomedicines.
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Affiliation(s)
- C Albert
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - L Bracaglia
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - A Koide
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY, USA
- Department of Medicine, New York University School of Medicine, New York, NY, USA
| | - J DiRito
- Department of Surgery, Yale University, New Haven, CT, USA
| | - T Lysyy
- Department of Surgery, Yale University, New Haven, CT, USA
| | - L Harkins
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - C Edwards
- Department of Surgery, Yale University, New Haven, CT, USA
| | - O Richfield
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
- Department of Surgery, Yale University, New Haven, CT, USA
| | - J Grundler
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - K Zhou
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - E Denbaum
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY, USA
| | - G Ketavarapu
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY, USA
| | - T Hattori
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY, USA
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - S Perincheri
- Department of Pathology, Yale University, New Haven, CT, USA
| | - J Langford
- Department of Surgery, Yale University, New Haven, CT, USA
| | - A Feizi
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - D Haakinson
- Department of Surgery, Yale University, New Haven, CT, USA
| | - S A Hosgood
- Department of Surgery, University of Cambridge, Cambridge, UK
| | - M L Nicholson
- Department of Surgery, University of Cambridge, Cambridge, UK
| | - J S Pober
- Department of Immunobiology, Yale University, New Haven, CT, USA
| | - W M Saltzman
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - S Koide
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY, USA.
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA.
| | - G T Tietjen
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA.
- Department of Surgery, Yale University, New Haven, CT, USA.
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2
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Klotz S, Baptiste B, Hattori T, Feng S, Jin C, Béneut K, Guigner J, Estève I. High-pressure polymerisation of CS 2: 'Bridgman's black' revisited. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322091161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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3
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Sato T, Kishi H, Murakata S, Hayashi Y, Hattori T, Nakazawa S, Mori Y, Hidaka M, Kasahara Y, Kusuhara A, Hosoya K, Hayashi H, Okamoto A. A new deep‐learning model using YOLOv3 to support sperm selection during intracytoplasmic sperm injection procedure. Reprod Med Biol 2022; 21:e12454. [PMID: 35414764 PMCID: PMC8979154 DOI: 10.1002/rmb2.12454] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/13/2022] [Accepted: 03/16/2022] [Indexed: 11/10/2022] Open
Abstract
Purpose To create and evaluate a machine‐learning model for YOLOv3 that can simultaneously perform morphological evaluation and tracking in a short time, which can be adapted to video data under an inverted microscope. Methods Japanese patients who underwent intracytoplasmic sperm injection at the Jikei University School of Medicine and Keiai Reproductive and Endosurgical Clinic from January 2019 to March 2020 were included. An AI model that simultaneously performs morphological assessment and tracking was created and its performance was evaluated. Results For morphological assessment, the sensitivity and positive predictive value (PPV) of this model for abnormal sperm were 0.881 and 0.853, respectively. The sensitivity and PPV for normal sperm were 0.794 and 0.689, respectively. For tracking performance, among the 51 objects, 40 (78.4%) were mostly tracked, 11 (21.6%) were partially tracked, and 0 (0%) were mostly lost. Conclusions This study showed that evaluating sperm morphology while tracking in a single model is possible by training YOLO v3. This model could acquire time‐series data of one sperm, which will assist in acquiring and annotating sperm image data.
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Affiliation(s)
- Takuma Sato
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Hiroshi Kishi
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Saori Murakata
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Yuki Hayashi
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | | | | | - Yusuke Mori
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Miwa Hidaka
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Yuta Kasahara
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Atsuko Kusuhara
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
| | - Kayo Hosoya
- Keiai Reproductive and Endosurgical Clinic Saitama Japan
| | | | - Aikou Okamoto
- Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
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4
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Zhang W, Yamaguchi T, Fang C, Yoshida K, Zhou Y, Zhu F, Machida S, Hattori T, Li W. Structure of an aqueous RbCl solution in the gigapascal pressure range by neutron diffraction combined with empirical potential structure refinement modeling. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118080] [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: 11/29/2022]
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5
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Hattori T, Sugita Y, Isomura M, Kawai R, Yoshida W, Suzumura T, Suzumura Y, Kubo K, Maeda H. EFFECTS OF LOW-LEVEL LASER IRRADIATION ON THE GROWTH OF THE RAT MANDIBULAR CONDYLE IN ORGAN CULTURE. Oral Surg Oral Med Oral Pathol Oral Radiol 2021. [DOI: 10.1016/j.oooo.2021.03.081] [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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6
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Maeda H, Isomura M, Hattori T, Kawai R, Yoshida W, Suzumura T, Suzumura Y, Sugita Y, Kubo K. MELANOCYTES IN ODONTOGENIC CYSTS. Oral Surg Oral Med Oral Pathol Oral Radiol 2021. [DOI: 10.1016/j.oooo.2021.03.106] [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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7
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Nagai T, Taguchi K, Isobe T, Matsuyama N, Hattori T, Unno R, Kato T, Etani T, Hamakawa T, Fujii Y, Ikegami Y, Kamiya H, Hamamoto S, Nakane A, Ando R, Maruyama T, Okada A, Kawai N, Yasui T. A multicenter, propensity score-matched retrospective study of preventing postoperative infection in robotic and laparoscopic minimally invasive surgeries; double-versus single-gloving. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00561-3] [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: 10/20/2022]
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8
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Kitamoto Y, Oda K, Ogino K, Hiyama K, Kita H, Hattori T, Oi S. Synthesis of an azadioxa-planar triphenylborane and investigation of its structural and photophysical properties. Chem Commun (Camb) 2021; 57:2297-2300. [PMID: 33533350 DOI: 10.1039/d0cc08331c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report here the first successful synthesis of planar triphenylborane 1 with the phenyl groups bridged by oxygen and nitrogen atoms via double nucleophilic aromatic substitution reaction. The hetero atom-bridged 1 has excellent planarity. Its structural and photophysical properties are tunable by altering the bridging atoms.
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Affiliation(s)
- Y Kitamoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan.
| | - K Oda
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - K Ogino
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - K Hiyama
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - H Kita
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - T Hattori
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan.
| | - S Oi
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan.
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9
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Munakata M, Hattori T, Konno S, Nakayama F, Inoue N, Ito H, Nakamura T, Hozawa A. Overtime is associated with increased cardio-metabolic risks possibly preceding endothelial damage: Miyagi Karoshi prevention study for teachers. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.351] [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: 10/22/2022]
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10
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Yamasaki T, Hattori T, Kakita K, Oota K, Miyai N, Nakamura R, Sawanishi T, Kinoshita N. Quantitative analysis of the isolation area after larger-size laser balloon ablation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0616] [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
The visually guided laser balloon ablation is a balloon-based catheter ablation technology used for atrial fibrillation (AF) ablation in recent years. This balloon catheter consists of a compliant balloon that has the capability of real-time endoscopic visualization of the targeted pulmonary vein (PV). The sizeable balloon is usually inflated to obtain optimal PV occlusion. The isolation area after laser balloon (LB) ablation was reported to be smaller than that after cryoballoon ablation. However, when LB is inflated with its maximum pressure, it can visualize wide-area PV antrum. Thereby, we suspected that larger-size LB can create wider isolation area.
Purpose
The aim of this study is to quantitatively evaluate the isolation area after LB ablation at the size larger than appropriate size for ablation in the pulmonary vein carina region.
Methods
We assessed 66 patients with AF who underwent LB ablation at the larger inflation size in our hospital during the period from July 2018 to July 2019. After LB ablation, we created voltage maps with a circular mapping catheter and calculated isolation areas with CARTO system.
Results
Figure shows a larger LB with its maximum pressure. PV antrum isolation was extended to the posterior wall in all patients. The left- and right-sided pulmonary vein antrum isolation area were 15.1±3.9 and 19.4±4.3 cm2, respectively.
Conclusion
LB at the larger inflation size with its maximum pressure can isolate wider-area circumferential PV antrum than previously reported. This method may be a new way of pulmonary vein antrum isolation.
Left atrial voltage mapping after PVI.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Yamasaki
- Takeda Hospital, Cardiac Arrhythmia, Kyoto, Japan
| | - T Hattori
- Takeda Hospital, Cardiac Arrhythmia, Kyoto, Japan
| | - K Kakita
- Takeda Hospital, Cardiac Arrhythmia, Kyoto, Japan
| | - K Oota
- Takeda Hospital, Cardiology, Kyoto, Japan
| | - N Miyai
- Takeda Hospital, Cardiology, Kyoto, Japan
| | - R Nakamura
- Takeda Hospital, Cardiology, Kyoto, Japan
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11
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Kato M, Hattori T, Shimizu T, Ninagawa K, Izumihara R, Nomoto H, Tanimura K, Atsumi T. Intrafamilial phenotypic distinction of hypophosphatasia with identical tissue nonspecific alkaline phosphatase gene mutation: a family report. J Bone Miner Metab 2020; 38:903-907. [PMID: 32772198 DOI: 10.1007/s00774-020-01137-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
Abstract
Hypophosphatasia (HPP) is caused by mutations in the tissue nonspecific alkaline phosphatase (TNSALP) gene in an autosomal recessive or dominant manner and characterized by defective mineralization of bone and low serum ALP levels. In this report, we present a family with HPP mother (case 1) and HPP child (case 2) who have identical TNSALP gene mutation (c.1015G>A p.Gly339Arg heterozygous mutation) but distinct clinical phenotypes. Whereas case 1 appeared to be asymptomatic despite extremely low levels of serum ALP, case 2 had several HPP-related symptoms, such as tooth loss, fractures, short stature, with slightly decreased ALP levels. Upon the diagnosis of HPP, case 1 discontinued denosumab, which was used to treat her rheumatoid arthritis, concerning the risk of atypical femoral fractures. The clinical course of this family was suggestive in a genotype-phenotype imbalance in HPP, the underdiagnosis of HPP in adults, and the risk of atypical femoral fractures using bone resorption inhibitors.
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Affiliation(s)
- Masaru Kato
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N15W7, Kita-Ku, Sapporo, 060-8638, Japan.
| | | | - Tomohiro Shimizu
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Keita Ninagawa
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N15W7, Kita-Ku, Sapporo, 060-8638, Japan
| | - Rimi Izumihara
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N15W7, Kita-Ku, Sapporo, 060-8638, Japan
| | - Hiroshi Nomoto
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N15W7, Kita-Ku, Sapporo, 060-8638, Japan
| | | | - Tatsuya Atsumi
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N15W7, Kita-Ku, Sapporo, 060-8638, Japan
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12
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Iwai T, Ogura K, Yamashita M, Ogata T, Hattori T, Mitsuyoshi T, Imagumbai T, Kokubo M. PO-1036: Analysis of serum pancreatic exocrine enzyme after radiotherapy for pancreatic carcinoma. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01053-7] [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: 10/22/2022]
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13
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Hattori T. Trend of strengthening clearance regulation in Japan and concerns about its worldwide effects on regulations for natural and artificial radionuclides. Ann ICRP 2020; 49:98-112. [PMID: 33108219 DOI: 10.1177/0146645320956518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Nuclear Regulation Authority (NRA) of Japan invited comments from the public on a revised guide on measurement and evaluation for clearance in 2019, which included a strict decision on how to treat uncertainties in the measurement and the nuclide vector. To resolve the issue on the uncertainty in clearance, a probabilistic approach had been established previously in the Atomic Energy Society of Japan Standard and incorporated into International Atomic Energy Agency (IAEA) Safety Report No. 67. NRA's new decision on the uncertainty in clearance was up to 10 times stricter than the probabilistic approach. This issue has been discussed at an international level in the framework of the ongoing revision of IAEA Safety Guide RS-G-1.7. This discussion on the uncertainty in clearance has raised serious concerns about its effects on other radiological protection regulations worldwide. This is because if we need strict treatment for the uncertainty in clearance, the same or even stricter treatment for conformity assessment may have to be applied to other radiological protection criteria for doses exceeding 10 µSv year-1. Radiological protection experts including regulators, professionals, and operators should be aware of the essential meaning of the radiological protection criteria by considering the background scientific basis on which they were established.
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Affiliation(s)
- T Hattori
- Nuclear Technology Research Laboratory, Central Research Institute of Electric Power Industry, 2-11-1 Iwadokita, Komae-shi, Tokyo, 201-8511, Japan
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14
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Bauer R, Tse JS, Komatsu K, Machida S, Hattori T. Slow compression of crystalline ice at low temperature. Nature 2020; 585:E9-E10. [PMID: 32939064 DOI: 10.1038/s41586-020-2697-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 08/10/2020] [Indexed: 11/09/2022]
Affiliation(s)
- R Bauer
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatchewan, Saskatoon, Canada
| | - J S Tse
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatchewan, Saskatoon, Canada.
| | - K Komatsu
- Geochemical Research Center (GCRC), Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - S Machida
- Neutron Science and Technology Center, CROSS, Tokai, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, Naka-gun, Japan
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15
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Ohara M, Hattori T, Yokota T. Progressive supranuclear palsy often develops idiopathic normal pressure hydrocephalus‐like magnetic resonance imaging features. Eur J Neurol 2020; 27:1930-1936. [DOI: 10.1111/ene.14322] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 05/07/2020] [Indexed: 01/07/2023]
Affiliation(s)
- M. Ohara
- Department of Neurology and Neurological Science Graduate School of Medical and Dental Science Tokyo Medical and Dental University Tokyo Japan
| | - T. Hattori
- Department of Neurology and Neurological Science Graduate School of Medical and Dental Science Tokyo Medical and Dental University Tokyo Japan
| | - T. Yokota
- Department of Neurology and Neurological Science Graduate School of Medical and Dental Science Tokyo Medical and Dental University Tokyo Japan
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16
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Fukae J, Isobe M, Hattori T, Fujieda Y, Kono M, Abe N, Kitano A, Narita A, Henmi M, Sakamoto F, Aoki Y, Ito T, Mitsuzaki A, Matsuhashi M, Shimizu M, Tanimura K, Sutherland K, Kamishima T, Atsumi T, Koike T. Convolutional neural network for classification of two-dimensional array images generated from clinical information may support diagnosis of rheumatoid arthritis. Sci Rep 2020; 10:5648. [PMID: 32221385 PMCID: PMC7101306 DOI: 10.1038/s41598-020-62634-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 03/16/2020] [Indexed: 11/16/2022] Open
Abstract
This research aimed to study the application of deep learning to the diagnosis of rheumatoid arthritis (RA). Definite criteria or direct markers for diagnosing RA are lacking. Rheumatologists diagnose RA according to an integrated assessment based on scientific evidence and clinical experience. Our novel idea was to convert various clinical information from patients into simple two-dimensional images and then use them to fine-tune a convolutional neural network (CNN) to classify RA or nonRA. We semi-quantitatively converted each type of clinical information to four coloured square images and arranged them as one image for each patient. One rheumatologist modified each patient’s clinical information to increase learning data. In total, 1037 images (252 RA, 785 nonRA) were used to fine-tune a pretrained CNN with transfer learning. For clinical data (10 RA, 40 nonRA), which were independent of the learning data and were used as testing data, we compared the classification ability of the fine-tuned CNN with that of three expert rheumatologists. Our simple system could potentially support RA diagnosis and therefore might be useful for screening RA in both specialised hospitals and general clinics. This study paves the way to enabling deep learning in the diagnosis of RA.
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Affiliation(s)
- Jun Fukae
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan.
| | - Masato Isobe
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | | | - Yuichiro Fujieda
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Michihiro Kono
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Nobuya Abe
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Akemi Kitano
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | - Akihiro Narita
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | - Mihoko Henmi
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | | | - Yuko Aoki
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | - Takeya Ito
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | - Akio Mitsuzaki
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | | | - Masato Shimizu
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | | | - Kenneth Sutherland
- Global Station for Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
| | | | - Tatsuya Atsumi
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takao Koike
- Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
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17
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Abstract
Paratrichaptum accuratum is a large conspicuous polypore fungus growing on dead or living angiosperm trees in subtropical-boreal areas of China, Indonesia, Japan, and Taiwan. The present study places P. accuratum in the family Gloeophyllaceae that belongs to the order Gloeophyllales within Agaricomycetes (Basidiomycota), based on evidence derived from morphological and ecological characteristics, and phylogenetic analyses of sequences of nuclear rDNA regions (5.8S, nuc 18S, nuc 28S) and protein-coding genes (rpb1, rpb2, and tef1). The analyses presented in this study also give strong support for including Jaapia in Gloeophyllaceae and Gloeophyllales. Thus, the names Jaapiaceae and Jaapiales are considered here as synonyms of Gloeophyllaceae and Gloeophyllales. Since Paratrichaptum represents the earliest diverging lineage in Gloeophyllales, pileate basidiocarps and brown rot appear to be ancestral states of Gloeophyllales. Paratrichaptum accuratum may represent a relic species, according to its phylogenetic position, peculiar distribution pattern and rare occurrence.
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Affiliation(s)
- C-C Chen
- Department of Plant Pathology, National Chung Hsing University, Taichung 40227, Taiwan
| | - B Cao
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - T Hattori
- Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan
| | - B-K Cui
- Institute of Microbiology, Beijing Forestry University, Beijing 100083, China
| | - C-Y Chen
- Department of Plant Pathology, National Chung Hsing University, Taichung 40227, Taiwan
| | - S-H Wu
- Department of Plant Pathology, National Chung Hsing University, Taichung 40227, Taiwan.,Department of Biology, National Museum of Natural Science, Taichung 40453, Taiwan
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18
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Ogura K, Imagumbai T, Kosaka Y, Hattori T, Hiraoka S, Ogata T, Kokubo M. Outcomes of Radiotherapy for Brain Metastases Patients without Active Extracranial Disease. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Ogata T, Kosaka Y, Imagumbai T, Ogura K, Hattori T, Hiraoka S, Kokubo M. Outcome of Stereotactic Body Radiotherapy for Patients with Histologically Proven Stage I Non-Small-Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Saito Y, Watanabe T, Hattori T, Jodo S. Intracranial vasculitis in eosinophilic granulomatosis with polyangiitis. Rheumatology (Oxford) 2018; 57:2253. [DOI: 10.1093/rheumatology/key178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yumika Saito
- Internal Medicine, Tomakomai City Hospital, Tomakomai, Japan
| | | | | | - Satoshi Jodo
- Internal Medicine, Tomakomai City Hospital, Tomakomai, Japan
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21
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Kawauchi M, Watanabe T, Hattori T, Suzuki A, Ishizu A, Jodo S. Eosinophilic granulomatosis with polyangiitis mimicking peripheral T-cell lymphoma, not otherwise specified. Scand J Rheumatol 2018; 48:171-172. [PMID: 30153088 DOI: 10.1080/03009742.2018.1493746] [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: 10/28/2022]
Affiliation(s)
- M Kawauchi
- a Department of Internal Medicine , Tomakomai City Hospital , Tomakomai , Japan
| | - T Watanabe
- a Department of Internal Medicine , Tomakomai City Hospital , Tomakomai , Japan
| | - T Hattori
- a Department of Internal Medicine , Tomakomai City Hospital , Tomakomai , Japan
| | - A Suzuki
- b Department of Pathology , KKR Sapporo Medical Center , Sapporo , Japan
| | - A Ishizu
- c Faculty of Health Sciences , Hokkaido University , Sapporo , Japan
| | - S Jodo
- a Department of Internal Medicine , Tomakomai City Hospital , Tomakomai , Japan
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22
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Watanabe T, Hattori T, Ogawa Y, Jodo S. Successful treatment with tofacitinib for renal disorder due to amyloid A amyloidosis and immunoglobulin A nephropathy in a patient with rheumatoid arthritis. Clin Exp Rheumatol 2018; 36:683-684. [PMID: 29998828] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Affiliation(s)
| | | | - Yayoi Ogawa
- Hokkaido Renal Pathology Center, Sapporo, Japan
| | - Satoshi Jodo
- Internal Medicine, Tomakomai City Hospital, Japan
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23
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Ishii Y, Komatsu K, Nakano S, Machida S, Hattori T, Sano-Furukawa A, Kagi H. Pressure-induced stacking disorder in boehmite. Phys Chem Chem Phys 2018; 20:16650-16656. [PMID: 29873355 DOI: 10.1039/c8cp02565g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of an aluminum layered hydroxide, boehmite (γ-AlOOH), as a function of pressure was studied by using in situ synchrotron X-ray and neutron diffraction. Peak broadening, which is only found for hkl (h ≠ 0) peaks in the X-ray diffraction patterns, is explained by stacking disorder accompanying a continuously increasing displacement of the AlO6 octahedral layer along the a-axis. This finding could be the first experimental result for pressure-induced stacking disorder driven by continuous layer displacement. The magnitude of the layer displacement was estimated from the X-ray scattering profile calculation based on the stacking disordered structure model. Hydrogen bond geometries of boehmite, obtained by structure refinements of the observed neutron diffraction patterns for the deuterated sample up to 10 GPa, show linearly approaching O-D covalent and DO hydrogen bond distances and they merge below 26 GPa. Pressure-induced stacking disorder makes the electrostatic potential of hydrogen bonds asymmetric, yielding less chance for proton-tunnelling.
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Affiliation(s)
- Y Ishii
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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24
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Nahata M, Mizuhara Y, Sadakane C, Watanabe J, Fujitsuka N, Hattori T. Influence of food on the gastric motor effect of the Kampo medicine rikkunshito in rat. Neurogastroenterol Motil 2018; 30. [PMID: 28776825 DOI: 10.1111/nmo.13177] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 07/05/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Rikkunshito, one of the Kampo medicines, is widely prescribed as a remedy for various upper gastrointestinal syndromes. The effect of rikkunshito is related to endogenous ghrelin and its active ingredient atractylodin enhances ghrelin receptor signaling. Kampo medicines are traditionally administered before or between meals; however, no definitive benefit of the timing of administration has been proven yet. To clarify the influence of food on the pharmacological action of rikkunshito, we investigated the gastric motor activity and pharmacokinetic profiles of atractylodin after the administration of rikkunshito in fasted and fed rats. METHODS Phase III-like contractions in the gastric antrum after an injection of ghrelin were measured using a strain gauge force transducer. Rikkunshito was administered to rats during fasting or after a nutrient test meal. Ghrelin was injected 30 minutes later and gastric motility was evaluated. Furthermore, after rikkunshito administration, the pharmacokinetic profiles of atractylodin in the plasma and brain of fasted and free-fed rats were assessed. KEY RESULTS Rikkunshito administration potentiated ghrelin-induced phase III-like contractions under fasting conditions. This effect was attenuated in animals fed a test meal. Atractylodin was detected pharmacokinetically in the plasma and brain after rikkunshito administration in rats, and free-fed rats exhibited a decreased maximum concentration of plasma atractylodin and a delayed time to reach the maximum concentration. CONCLUSIONS & INFERENCES We show that the pharmacological action of rikkunshito is influenced by food in rats. The efficacy of rikkunshito may be associated with decreased absorption of its active ingredient atractylodin when food is in the stomach.
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Affiliation(s)
- M Nahata
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - Y Mizuhara
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - C Sadakane
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - J Watanabe
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - N Fujitsuka
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - T Hattori
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
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25
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Shimada H, Nakashizuka H, Hattori T, Mori R, Mizutani Y, Yuzawa M. Vitreous Prolapse through the Scleral Wound in 25-Gauge Transconjunctival Vitrectomy. Eur J Ophthalmol 2018; 18:659-62. [DOI: 10.1177/112067210801800431] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- H. Shimada
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - H. Nakashizuka
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - T. Hattori
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - R. Mori
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - Y. Mizutani
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - M. Yuzawa
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
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26
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Shimada H, Nakashizuka H, Hattori T, Mori R, Mizutani Y, Yuzawa M. Conjunctival Displacement to the Corneal Side for Oblique-Parallel Insertion in 25-Gauge Vitrectomy. Eur J Ophthalmol 2018; 18:848-51. [PMID: 18850574 DOI: 10.1177/112067210801800535] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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
Purpose To assess the usefulness of the method of oblique-parallel trocar insertion with conjunctival displacement to the corneal side in 25-gauge (G) transconjunctival vitrectomy. Methods 25-G vitrectomy was performed in 77 consecutive eyes. Before making oblique-parallel trocar insertions, the conjunctiva was conventionally displaced superiorly in 35 eyes, but was displaced toward the corneal side in 42 eyes. After surgery, the distance between the scleral and conjunctival wounds was measured with calipers. The frequency of scleral wound exposure was assessed. Results After cannula removal at the end of surgery, inferior repositioning of the superiorly displaced conjunctiva was observed, while marked posterior repositioning of the corneal side caused displacement of the conjunctiva due to gravity. The superior displacement distances between the sclera and conjunctival wounds were 2.4±0.3 mm at the infusion port, 2.0±0.4 mm at the superior temporal port, and 1.9±0.4 mm at the superior nasal port, while the corresponding distances for corneal side displacement were 3.6±0.5, 3.5±0.5, and 2.5±0.5 mm, and were all significantly (p<0.0001) greater with corneal side displacement. The frequency of scleral wound exposure due to conjunctival damage around the cannula (infusion port) was significantly (p=0.0164) lower for corneal side displacement (0/42; 16.7%) than superior displacement (5/35; 14.3%). There was no postoperative endophthalmitis in all 77 patients studied. Conclusions In 25-G transconjunctival vitrectomy, using oblique-parallel trocar insertions with the conjunctiva displaced toward the corneal side results in marked posterior repositioning of the conjunctiva after cannula extraction. Corneal side conjunctival displacement is technically easy and completely covers the scleral wound. This method is expected to be effective in preventing endophthalmitis.
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Affiliation(s)
- H. Shimada
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - H. Nakashizuka
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - T. Hattori
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - R. Mori
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - Y. Mizutani
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
| | - M. Yuzawa
- Department of Ophthalmology, School of Medicine, Nihon University, Tokyo - Japan
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27
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Hattori T, Sakai H, Tokunaga Y, Kambe S, Matsuda TD, Haga Y. Evidence for Spin Singlet Pairing with Strong Uniaxial Anisotropy in URu_{2}Si_{2} Using Nuclear Magnetic Resonance. Phys Rev Lett 2018; 120:027001. [PMID: 29376726 DOI: 10.1103/physrevlett.120.027001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 06/07/2023]
Abstract
In order to identify the spin contribution to superconducting pairing compatible with the so-called "hidden order", ^{29}Si nuclear magnetic resonance measurements have been performed using a high-quality single crystal of URu_{2}Si_{2}. A clear reduction of the ^{29}Si Knight shift in the superconducting state has been observed under a magnetic field applied along the crystalline c axis, corresponding to the magnetic easy axis. These results provide direct evidence for the formation of spin-singlet Cooper pairs. Consequently, results indicating a very tiny change of the in-plane Knight shift reported previously demonstrate extreme uniaxial anisotropy for the spin susceptibility in the hidden order state.
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Affiliation(s)
- T Hattori
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - H Sakai
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Y Tokunaga
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - S Kambe
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T D Matsuda
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Y Haga
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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28
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Hassanein A, Salahuddin N, Matsuda A, Hattori T, Elfiky M. Fabrication of Electrochemical Sensor Based on Layered Double Hydroxide/Polypyrrole/Carbon Paste for Determination of an Alpha-adrenergic Blocking Agent Terazosin. ELECTROANAL 2018. [DOI: 10.1002/elan.201700321] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- A. Hassanein
- Department of Chemistry; Faculty of Science; Tanta University; Egypt
| | - N. Salahuddin
- Department of Chemistry; Faculty of Science; Tanta University; Egypt
| | - A. Matsuda
- Department of Electrical and Electronic Information Engineering; Toyohashi University of Technology; Japan
| | - T. Hattori
- Department of Electrical and Electronic Information Engineering; Toyohashi University of Technology; Japan
| | - M. Elfiky
- Department of Chemistry; Faculty of Science; Tanta University; Egypt
- Department of Electrical and Electronic Information Engineering; Toyohashi University of Technology; Japan
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29
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Muto H, Ohshiro Y, Kotaka Y, Yamaguchi H, Sakemi Y, Kobayashi K, Nishimura M, Oyaizu M, Kubono S, Kase M, Hattori T, Shimoura S. Note: An innovative method for 12C 4+ suppression in 18O 6+ beam production in an electron cyclotron resonance ion source. Rev Sci Instrum 2018; 89:016103. [PMID: 29390664 DOI: 10.1063/1.5000426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It is a major and complex task to accelerate an ion which has the same charge to mass ratio with strong contaminant ions, such as 12C4+ in the 18O6+ beam. An innovative method has been developed to suppress the contaminant ions in the Electron Cyclotron Resonance (ECR) ion source by introducing Li vapor. The ion distribution inside the ECR zone was obtained by the optical analysis of ions inside the ECR ion source. The 12C4+ ions were suppressed as much as by a factor of 10, whereas the 18O6+ beam changed little with the use of this technique.
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Affiliation(s)
- Hideshi Muto
- Center of General Education, Tokyo University of Science, Suwa, 5000-1 Toyohira, Chino, Nagano 391-0292, Japan
| | - Yukimitsu Ohshiro
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Riken Campus, Wako, Saitama 351-0198, Japan
| | - Yasuteru Kotaka
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Riken Campus, Wako, Saitama 351-0198, Japan
| | - Hidetoshi Yamaguchi
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Riken Campus, Wako, Saitama 351-0198, Japan
| | - Yasuhiro Sakemi
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Riken Campus, Wako, Saitama 351-0198, Japan
| | - Kiyoshi Kobayashi
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Makoto Nishimura
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Michihiro Oyaizu
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Shigeru Kubono
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Riken Campus, Wako, Saitama 351-0198, Japan
| | - Masayuki Kase
- Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Toshiyuki Hattori
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo 152-8551, Japan
| | - Susumu Shimoura
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Riken Campus, Wako, Saitama 351-0198, Japan
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30
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Ohira-Kawamura S, Oku T, Watanabe M, Takahashi R, Munakata K, Takata S, Sakaguchi Y, Ishikado M, Ohuchi K, Hattori T, Kira H, Sakai K, Aso T, Yamauchi Y, Isomae S. Sample environment at the J-PARC MLF. JNR 2017. [DOI: 10.3233/jnr-170046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. Ohira-Kawamura
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T. Oku
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - M. Watanabe
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - R. Takahashi
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - K. Munakata
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - S. Takata
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Y. Sakaguchi
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - M. Ishikado
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - K. Ohuchi
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - T. Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - H. Kira
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - K. Sakai
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T. Aso
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Y. Yamauchi
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - S. Isomae
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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31
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Numasawa Y, Hattori T, Ishiai S, Kobayashi Z, Kamata T, Kotera M, Ishibashi S, Sanjo N, Mizusawa H, Yokota T. Components of depressive disorder due to raphe-nuclei damage: Subclass analysis of patients with brainstem infarction. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Higashi M, Ozaki K, Hattori T, Ishii T, Soga K, Sato N, Tomita M, Mizusawa H, Ishikawa K, Yokota T. Cerebellar ataxia subgroups can be differentiated by pontine magnetic resonance imaging. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Yamada A, Numasawa Y, Hattori T, Ozaki K, Ishibashi S, Nishida Y, Kanouchi T, Sanjo N, Takanori Y. Signal changes of skeletal muscle MRI in peripheral nerve disorders. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Manaka D, Nishitai R, Konishi S, Ohta T, Hattori T, Ann H, Kawaguchi K, Nishikawa Y, Kudo R, Hamasu S. Phase II study of Ccr-based dose-control of S-1 in the first-line chemotherapy of S-1/oxaliplatin (SOX) + bevacizumab regimen for advanced colorectal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.139] [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: 11/15/2022] Open
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35
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Abstract
p-tert-Butylcalix[4]arenedicarboxylic acid, in which two distal hydroxy groups of p-tert-butylcalix[4]arene are replaced with carboxy groups, shows extraction selectivity toward Pd2+ ions by the formation of a 2 : 2 (M/L) complex.
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Affiliation(s)
- N. Morohashi
- Department of Biomolecular Engineering
- Graduate School of Engineering
- Tohoku University
- Aoba-ku
- Japan
| | - S. Iijima
- Department of Biomolecular Engineering
- Graduate School of Engineering
- Tohoku University
- Aoba-ku
- Japan
| | - K. Akasaka
- Department of Biomolecular Engineering
- Graduate School of Engineering
- Tohoku University
- Aoba-ku
- Japan
| | - T. Hattori
- Department of Biomolecular Engineering
- Graduate School of Engineering
- Tohoku University
- Aoba-ku
- Japan
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36
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Ogino H, Fujimichi Y, Sasaki M, Hamada N, Iwasaki T, Yoshida K, Hattori T. Quantitative assessment of provability of radiation-related cancers considering unavoidable existence of unadjusted risk factors. J Radiol Prot 2016; 36:865-884. [PMID: 27739409 DOI: 10.1088/0952-4746/36/4/865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The attribution of stochastic effects to exposure to ionizing radiation has been qualitatively discussed by introducing two distinct concepts of provability and probability. This study aims to develop a method of quantitatively assessing the provability of radiation-related cancers. To this end, the 'minimum provable dose' (MPD) was developed and applied to actual cancer mortality in Japan. The background lifetime risk of cancer mortality was calculated for the esophagus, stomach, colon, liver, lungs, skin, breasts, ovaries, bladder, and bone marrow as well as the age-specific risk coefficients reproducing those given in the 2007 Recommendations of the International Commission on Radiological Protection (ICRP). Comparing the relative ratio of MPDs, which was defined herein as the 'provability index' (PI), we quantitatively ranked radiation-related cancers for different tissues and organs predicated on provability for ages of 10, 30, 50, and 0-85+ years at exposure. We discuss the radiological protection of male emergency workers focusing on cancers highly prioritized according to the ranking (i.e. colon, bone marrow, and bladder). The present study proposed the system to quantitatively evaluate the level of radiological protection taking into account the variations of the background cancer risk on the provability of radiation-related cancers.
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Affiliation(s)
- H Ogino
- Radiation Safety Research Center, Nuclear Technology Research Laboratory, Central Research Institute of Electric Power Industry, 2-11-1, Iwado Kita, Komae-shi, Tokyo 201-8511, Japan
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37
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Niwa S, Miki S, Sawai K, Hattori T. Experimental Evaluation of the Anchoring Efficiency of Bone Cement under Various Conditions, and Improved Cementing Techniques and Instrumentations for Total Hip Replacement. ACTA ACUST UNITED AC 2016; 13:197-202. [PMID: 6543799 DOI: 10.1243/emed_jour_1984_013_048_02] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Viscoelastic properties of acrylic bone cement were studied by using a simplified controlled laboratory model simulating a component cementing in total hip replacement surgery. This study also dealt with improved cementing techniques developed through these experimental studies.
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38
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Munakata M, Hattori T, Konno S. Very mild renal endothelial damage and glomerular hyperfiltration may precede incident hypertension in the Japanese general population: The Watari study. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Abstract
We conducted a retrospective review of 11 patients with bilateral Kienböck’s disease from our series of 251 patients with Kienböck’s disease. There were no significant differences in radiographic parameters, including ulnar variance and carpal bone angle, between those with unilateral and those with bilateral Kienböck’s disease. None of the patients with bilateral disease had been treated with corticosteroids or had a systemic disease that predisposed to osteonecrosis. Thus, this study failed to demonstrate any risk factor for bilateral, as opposed to unilateral Kienböck’s disease.
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Affiliation(s)
- N Yazaki
- Department of Hand Surgery, Graduate School of Medicine, Nagoya University, Nagoya, Japan.
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40
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Klotz S, Komatsu K, Pietrucci F, Kagi H, Ludl AA, Machida S, Hattori T, Sano-Furukawa A, Bove LE. Ice VII from aqueous salt solutions: From a glass to a crystal with broken H-bonds. Sci Rep 2016; 6:32040. [PMID: 27562476 PMCID: PMC5000010 DOI: 10.1038/srep32040] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/26/2016] [Indexed: 11/16/2022] Open
Abstract
It has been known for decades that certain aqueous salt solutions of LiCl and LiBr readily form glasses when cooled to below ≈160 K. This fact has recently been exploited to produce a « salty » high-pressure ice form: When the glass is compressed at low temperatures to pressures higher than 4 GPa and subsequently warmed, it crystallizes into ice VII with the ionic species trapped inside the ice lattice. Here we report the extreme limit of salt incorporation into ice VII, using high pressure neutron diffraction and molecular dynamics simulations. We show that high-pressure crystallisation of aqueous solutions of LiCl∙RH2O and LiBr∙RH2O with R = 5.6 leads to solids with strongly expanded volume, a destruction of the hydrogen-bond network with an isotropic distribution of water-dipole moments, as well as a crystal-to-amorphous transition on decompression. This highly unusual behaviour constitutes an interesting pathway from a glass to a crystal where translational periodicity is restored but the rotational degrees of freedom remaining completely random.
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Affiliation(s)
- S Klotz
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - F Pietrucci
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - A-A Ludl
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - S Machida
- CROSS-Tokai, Research Centre for Neutron Science and Technology, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - A Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - L E Bove
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France.,Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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41
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Komatsu K, Noritake F, Machida S, Sano-Furukawa A, Hattori T, Yamane R, Kagi H. Partially ordered state of ice XV. Sci Rep 2016; 6:28920. [PMID: 27375120 PMCID: PMC4931510 DOI: 10.1038/srep28920] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 06/13/2016] [Indexed: 11/24/2022] Open
Abstract
Most ice polymorphs have order–disorder “pairs” in terms of hydrogen positions, which contributes to the rich variety of ice polymorphs; in fact, three recently discovered polymorphs— ices XIII, XIV, and XV—are ordered counter forms to already identified disordered phases. Despite the considerable effort to understand order–disorder transition in ice crystals, there is an inconsistency among the various experiments and calculations for ice XV, the ordered counter form of ice VI, i.e., neutron diffraction observations suggest antiferroelectrically ordered structures, which disagree with dielectric measurement and theoretical studies, implying ferroelectrically ordered structures. Here we investigate in-situ neutron diffraction measurements and density functional theory calculations to revisit the structure and stability of ice XV. We find that none of the completely ordered configurations are particular favored; instead, partially ordered states are established as a mixture of ordered domains in disordered ice VI. This scenario in which several kinds of ordered configuration coexist dispels the contradictions in previous studies. It means that the order–disorder pairs in ice polymorphs are not one-to-one correspondent pairs but rather have one-to-n correspondence, where there are n possible configurations at finite temperature.
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Affiliation(s)
- K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - F Noritake
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - S Machida
- CROSS-Tokai, Research Center for Neutron Science and Technology, IQBRC Bldg, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - A Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - R Yamane
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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42
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Okuyama H, Kitaguchi Y, Hattori T, Ueda Y, Ferrer NG, Hatta S, Aruga T. Adsorbed states of chlorophenol on Cu(110) and controlled switching of single-molecule junctions. J Chem Phys 2016; 144:244703. [PMID: 27369529 DOI: 10.1063/1.4954409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A molecular junction of substituted benzene (chlorophenol) is fabricated and controlled by using a scanning tunneling microscope (STM). Prior to the junction formation, the bonding geometry of the molecule on the surface is characterized by STM and electron energy loss spectroscopy (EELS). EELS shows that the OH group of chlorophenol is dissociated on Cu(110) and that the molecule is bonded nearly flat to the surface via an O atom, with the Cl group intact. We demonstrate controlled contact of an STM tip to the "available" Cl group and lift-up of the molecule while it is anchored to the surface via an O atom. The asymmetric bonding motifs of the molecule to the electrodes allow for reversible control of the junction.
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Affiliation(s)
- H Okuyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Y Kitaguchi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - T Hattori
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Y Ueda
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - N G Ferrer
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - S Hatta
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - T Aruga
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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43
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Miwa H, Koseki J, Oshima T, Hattori T, Kase Y, Kondo T, Fukui H, Tomita T, Ohda Y, Watari J. Impairment of gastric accommodation induced by water-avoidance stress is mediated by 5-HT2B receptors. Neurogastroenterol Motil 2016; 28:765-78. [PMID: 26833428 DOI: 10.1111/nmo.12775] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 12/21/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND Psychological stress has been shown to impair gastric accommodation (GA), but its mechanism has not been elucidated. This study was conducted to clarify the role of 5-HT2B receptors in a guinea pig model of stress-induced impairment of GA. METHODS Gastric accommodation was evaluated by measuring the intrabag pressure in the proximal stomach after administration of a liquid meal. The guinea pigs were subjected to water-avoidance stress. The role of 5-HT2B receptors in impairment of GA was investigated by administering a 5-HT2B receptor agonist (BW723C86) or antagonist (SB215505), the traditional Japanese medicine rikkunshito (RKT), a muscarinic M3 receptor antagonist (1,1-dimethyl-4-diphenylacetoxypiperidium iodide [4-DAMP]), or a nitric oxide synthase inhibitor (Nω -nitro-L-arginine [L-NNA]). KEY RESULTS In normal animals, liquid meal-induced GA was inhibited by BW723C86, but was not affected by SB215505. The inhibition of GA by BW723C86 was reversed by co-administration of 4-DAMP. Compared to normal animals, GA in stressed animals was significantly inhibited. SB215505 and RKT significantly suppressed stress-induced impairment of GA. After meal administration, the level of cyclic guanosine monophosphate in gastric fundus tissue increased by approximately twofold in normal animals, but did not change in stressed animals. The inhibition of GA by L-NNA was suppressed by SB215505 or RKT. At a dose that did not affect GA in normal animals, BW723C86 exacerbated the impairment of GA in stressed animals. CONCLUSIONS AND INFERENCES Stress-induced impairment of GA may be mediated by an increased responsiveness of 5-HT2B receptors, and activation of the 5-HT2B receptor signaling pathway may have an inhibitory effect on nitric oxide function.
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Affiliation(s)
- H Miwa
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - J Koseki
- Tsumura Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - T Oshima
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - T Hattori
- Tsumura Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - Y Kase
- Tsumura Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - T Kondo
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - H Fukui
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - T Tomita
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - Y Ohda
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - J Watari
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
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44
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Matsui S, Mori Y, Nonaka T, Hattori T, Kasamatsu Y, Haraguchi D, Watanabe Y, Uchiyama K, Ishikawa M. Energy deposition evaluation for ultra-low energy electron beam irradiation systems using calibrated thin radiochromic film and Monte Carlo simulations. Rev Sci Instrum 2016; 87:053309. [PMID: 27250416 DOI: 10.1063/1.4949501] [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: 06/05/2023]
Abstract
For evaluation of on-site dosimetry and process design in industrial use of ultra-low energy electron beam (ULEB) processes, we evaluate the energy deposition using a thin radiochromic film and a Monte Carlo simulation. The response of film dosimeter was calibrated using a high energy electron beam with an acceleration voltage of 2 MV and alanine dosimeters with uncertainty of 11% at coverage factor 2. Using this response function, the results of absorbed dose measurements for ULEB were evaluated from 10 kGy to 100 kGy as a relative dose. The deviation between the responses of deposit energy on the films and Monte Carlo simulations was within 15%. As far as this limitation, relative dose estimation using thin film dosimeters with response function obtained by high energy electron irradiation and simulation results is effective for ULEB irradiation processes management.
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Affiliation(s)
- S Matsui
- The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsucho, Nishiku, Hamamatsu, Shizuoka 431-1202, Japan
| | - Y Mori
- The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsucho, Nishiku, Hamamatsu, Shizuoka 431-1202, Japan
| | - T Nonaka
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
| | - T Hattori
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
| | - Y Kasamatsu
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
| | - D Haraguchi
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
| | - Y Watanabe
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
| | - K Uchiyama
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
| | - M Ishikawa
- Hamamatsu Photonics K.K. Electron Tube Division, 314-5 Shimokanzo, Iwata, Shizuoka 438-0193, Japan
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45
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Keane EF, Johnston S, Bhandari S, Barr E, Bhat NDR, Burgay M, Caleb M, Flynn C, Jameson A, Kramer M, Petroff E, Possenti A, van Straten W, Bailes M, Burke-Spolaor S, Eatough RP, Stappers BW, Totani T, Honma M, Furusawa H, Hattori T, Morokuma T, Niino Y, Sugai H, Terai T, Tominaga N, Yamasaki S, Yasuda N, Allen R, Cooke J, Jencson J, Kasliwal MM, Kaplan DL, Tingay SJ, Williams A, Wayth R, Chandra P, Perrodin D, Berezina M, Mickaliger M, Bassa C. The host galaxy of a fast radio burst. Nature 2016; 530:453-6. [PMID: 26911781 DOI: 10.1038/nature17140] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 01/13/2016] [Indexed: 11/09/2022]
Abstract
In recent years, millisecond-duration radio signals originating in distant galaxies appear to have been discovered in the so-called fast radio bursts. These signals are dispersed according to a precise physical law and this dispersion is a key observable quantity, which, in tandem with a redshift measurement, can be used for fundamental physical investigations. Every fast radio burst has a dispersion measurement, but none before now have had a redshift measurement, because of the difficulty in pinpointing their celestial coordinates. Here we report the discovery of a fast radio burst and the identification of a fading radio transient lasting ~6 days after the event, which we use to identify the host galaxy; we measure the galaxy's redshift to be z = 0.492 ± 0.008. The dispersion measure and redshift, in combination, provide a direct measurement of the cosmic density of ionized baryons in the intergalactic medium of ΩIGM = 4.9 ± 1.3 per cent, in agreement with the expectation from the Wilkinson Microwave Anisotropy Probe, and including all of the so-called 'missing baryons'. The ~6-day radio transient is largely consistent with the radio afterglow of a short γ-ray burst, and its existence and timescale do not support progenitor models such as giant pulses from pulsars, and supernovae. This contrasts with the interpretation of another recently discovered fast radio burst, suggesting that there are at least two classes of bursts.
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Affiliation(s)
- E F Keane
- Square Kilometre Array Organisation, Jodrell Bank Observatory, SK11 9DL, UK.,Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia
| | - S Johnston
- Commonwealth Science and Industrial Research Organisation (CSIRO), Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, New South Wales 1710, Australia
| | - S Bhandari
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia
| | - E Barr
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia
| | - N D R Bhat
- Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia.,International Centre for Radio Astronomy Research, Curtin University, Bentley, Western Australia 6102, Australia
| | - M Burgay
- Instituto Nazionale di Astrofisica (INAF)-Osservatorio Astronomico di Cagliari, Via della Scienza 5, I-09047 Selargius (CA), Italy
| | - M Caleb
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia.,Research School of Astronomy and Astrophysics, Australian National University, Canberra, Australian Capital Territory 2611, Australia
| | - C Flynn
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia
| | - A Jameson
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia
| | - M Kramer
- Max-Planck-Institut für Radioastronomie (MPIfR), Auf dem Hügel 69, D-53121 Bonn, Germany.,Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
| | - E Petroff
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia.,Commonwealth Science and Industrial Research Organisation (CSIRO), Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, New South Wales 1710, Australia
| | - A Possenti
- Instituto Nazionale di Astrofisica (INAF)-Osservatorio Astronomico di Cagliari, Via della Scienza 5, I-09047 Selargius (CA), Italy
| | - W van Straten
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia
| | - M Bailes
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia
| | - S Burke-Spolaor
- National Radio Astronomy Observatory, Socorro, New Mexico, USA
| | - R P Eatough
- Max-Planck-Institut für Radioastronomie (MPIfR), Auf dem Hügel 69, D-53121 Bonn, Germany
| | - B W Stappers
- Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
| | - T Totani
- Department of Astronomy, the University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - M Honma
- National Astronomical Observatory of Japan, 2 Chome-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan.,Department of Astronomical Science, SOKENDAI (Graduate University for the Advanced Study), Osawa, Mitaka 181-8588, Japan
| | - H Furusawa
- National Astronomical Observatory of Japan, 2 Chome-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
| | - T Hattori
- Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, Hawaii 96720, USA
| | - T Morokuma
- Institute of Astronomy, Graduate School of Science, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan.,Kavli Institute for the Physics and Mathematics of the Universe (WPI), Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Niino
- National Astronomical Observatory of Japan, 2 Chome-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
| | - H Sugai
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - T Terai
- Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, Hawaii 96720, USA
| | - N Tominaga
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan.,Department of Physics, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Kobe, Hyogo 658-8501, Japan
| | - S Yamasaki
- Department of Astronomy, the University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - N Yasuda
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - R Allen
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia
| | - J Cooke
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H29, PO Box 218, Victoria 3122, Australia.,Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia
| | - J Jencson
- Cahill Center for Astrophysics, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
| | - M M Kasliwal
- Cahill Center for Astrophysics, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
| | - D L Kaplan
- Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
| | - S J Tingay
- Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia.,International Centre for Radio Astronomy Research, Curtin University, Bentley, Western Australia 6102, Australia
| | - A Williams
- International Centre for Radio Astronomy Research, Curtin University, Bentley, Western Australia 6102, Australia
| | - R Wayth
- Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia.,International Centre for Radio Astronomy Research, Curtin University, Bentley, Western Australia 6102, Australia
| | - P Chandra
- National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University Campus, Ganeshkhind, Pune 411 007, India
| | - D Perrodin
- Instituto Nazionale di Astrofisica (INAF)-Osservatorio Astronomico di Cagliari, Via della Scienza 5, I-09047 Selargius (CA), Italy
| | - M Berezina
- Max-Planck-Institut für Radioastronomie (MPIfR), Auf dem Hügel 69, D-53121 Bonn, Germany
| | - M Mickaliger
- Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
| | - C Bassa
- ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands
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Kabongo-Kayoka PN, Obi CL, Nakajima C, Suzuki Y, Hattori T, Eloff JN, Wright J, Mbelle N, McGaw LJ. Novel Mycobacterium avium Complex Species Isolated From Black Wildebeest (Connochaetes gnou) in South Africa. Transbound Emerg Dis 2015; 64:929-937. [PMID: 26671520 DOI: 10.1111/tbed.12460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Indexed: 01/10/2023]
Abstract
A study was undertaken to isolate and characterize Mycobacterium species from black wildebeest suspected of being infected with tuberculosis in South Africa. This led to the discovery of a new Mycobacterium avium complex species, provisionally referred to as the Gnou isolate from black wildebeest (Connochaetes gnou). Sixteen samples from nine black wildebeest were processed for Mycobacterium isolation. Following decontamination, samples were incubated in an ordinary incubator at 37°C on Löwenstein-Jensen slants and in liquid medium tubes using the BACTEC™ MGIT™ 960 system, respectively. Identification of the isolate was carried out by standard biochemical tests and using the line probe assay from the GenoType® CM/AS kit (Hain Lifescience GmbH, Nehren, Germany). The DNA extract was also analysed using gene sequencing. Partial gene sequencing and analysis of 16S rRNA gene, and 16S-23S rRNA (ITS), rpoB and hsp65 and phylogenetic analyses by searching GenBank using the BLAST algorithm were conducted. Phylogenetic trees were constructed using four methods, namely Bayesian inference, maximum likelihood, maximum parsimony and neighbour-joining methods. The isolate was identified as Mycobacterium intracellulare using the GenoType® CM/AS kit and as Mycobacterium avium complex (MAC) by gene sequencing. The gene sequence targeting all the genes, ITS, 16S rRNA, rpoB and hsp65 and phylogenetic analyses indicated that this isolate presented a nucleotide sequence different from all currently published sequences, and its position was far enough from other MAC species to suggest that it might be a new species.
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Affiliation(s)
- P N Kabongo-Kayoka
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, University of South Africa, Florida, South Africa.,Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - C L Obi
- Division of Academic Affairs, University of Fort Hare, Alice, South Africa
| | - C Nakajima
- Division of Bioresources, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Y Suzuki
- Division of Bioresources, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - T Hattori
- Department of Emerging Infectious Diseases, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - J N Eloff
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - J Wright
- Inqaba Biotechnical Industries (Pty) Ltd, Pretoria, South Africa
| | - N Mbelle
- Department of Medical Microbiology, University of Pretoria, Pretoria, South Africa.,National Health Laboratory Service, Pretoria, South Africa
| | - L J McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
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47
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Harada Y, Ro S, Ochiai M, Hayashi K, Hosomi E, Fujitsuka N, Hattori T, Yakabi K. Ghrelin enhancer, rikkunshito, improves postprandial gastric motor dysfunction in an experimental stress model. Neurogastroenterol Motil 2015; 27:1089-97. [PMID: 26088415 PMCID: PMC4744783 DOI: 10.1111/nmo.12588] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 04/16/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND Functional dyspepsia (FD) is one of the most common disorders of gastrointestinal (GI) diseases. However, no curable treatment is available for FD because the detailed mechanism of GI dysfunction in stressed conditions remains unclear. We aimed to clarify the association between endogenous acylated ghrelin signaling and gastric motor dysfunction and explore the possibility of a drug with ghrelin signal-enhancing action for FD treatment. METHODS Solid gastric emptying (GE) and plasma acylated ghrelin levels were evaluated in an urocortin1 (UCN1) -induced stress model. To clarify the role of acylated ghrelin on GI dysfunction in the model, exogenous acylated ghrelin, an endogenous ghrelin enhancer, rikkunshito, or an α2 -adrenergic receptor (AR) antagonist was administered. Postprandial motor function was investigated using a strain gauge force transducer in a free-moving condition. KEY RESULTS Exogenous acylated ghrelin supplementation restored UCN1-induced delayed GE. Alpha2 -AR antagonist and rikkunshito inhibited the reduction in plasma acylated ghrelin and GE in the stress model. The action of rikkunshito on delayed GE was blocked by co-administration of the ghrelin receptor antagonist. UCN1 decreased the amplitude of contraction in the antrum while increasing it in the duodenum. The motility index of the antrum but not the duodenum was significantly reduced by UCN1 treatment, which was improved by acylated ghrelin or rikkunshito. CONCLUSIONS & INFERENCES The UCN1-induced gastric motility dysfunction was mediated by abnormal acylated ghrelin dynamics. Supplementation of exogenous acylated ghrelin or enhancement of endogenous acylated ghrelin secretion by rikkunshito may be effective in treating functional GI disorders.
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Affiliation(s)
- Y. Harada
- Tsumura Research LaboratoriesTsumura & Co.IbarakiJapan
| | - S. Ro
- Department of Gastroenterology and HepatologySaitama Medical CenterSaitama Medical UniversitySaitamaJapan,Central Research LaboratoriesTeikyo University Chiba Medical CenterChibaJapan
| | - M. Ochiai
- Department of Gastroenterology and HepatologySaitama Medical CenterSaitama Medical UniversitySaitamaJapan
| | - K. Hayashi
- Department of Gastroenterology and HepatologySaitama Medical CenterSaitama Medical UniversitySaitamaJapan
| | - E. Hosomi
- Department of Gastroenterology and HepatologySaitama Medical CenterSaitama Medical UniversitySaitamaJapan
| | - N. Fujitsuka
- Tsumura Research LaboratoriesTsumura & Co.IbarakiJapan
| | - T. Hattori
- Tsumura Research LaboratoriesTsumura & Co.IbarakiJapan
| | - K. Yakabi
- Department of Gastroenterology and HepatologySaitama Medical CenterSaitama Medical UniversitySaitamaJapan
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Matsumoto J, Lohman BD, Morimoto K, Ichinose Y, Hattori T, Taira Y. Damage control interventional radiology (DCIR) in prompt and rapid endovascular strategies in trauma occasions (PRESTO): A new paradigm. Diagn Interv Imaging 2015; 96:687-91. [PMID: 26119866 DOI: 10.1016/j.diii.2015.06.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 06/01/2015] [Accepted: 06/01/2015] [Indexed: 12/19/2022]
Abstract
This article proposes an innovative concept of interventional radiology for hemodynamically unstable trauma patients. Damage control interventional radiology (DCIR) is an aggressive and time-conscious algorithm that prioritizes saving life of the hemorrhaging patient in extremis which conventional emergency interventional radiology (CEIR) cannot efficiently do. Briefly, DCIR aims to save life while CEIR aims to control bleeding with a constant concern to time-awareness. This article also presents the concept of "Prompt and Rapid Endovascular Strategies in Traumatic Occasions" (PRESTO) that entirely oversees and manages trauma patients from arrival to the trauma bay until initial completion of hemostasis with endovascular techniques. PRESTO's "Start soon and finish sooner" relies on the earlier activation of interventional radiology team but also emphasizes on a rapid completion of hemostasis in which DCIR has been specifically tailored. Both DCIR and PRESTO expand the role of IR and represent a paradigm shift in the realm of trauma care.
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Affiliation(s)
- J Matsumoto
- Departments of Emergency and Critical Care Medicine, Saint-Marianna University School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511 Kanagawa, Japan; Department of Radiology, National Hospital Organization Disaster Medical Center, Tachikawa, Tokyo, Japan.
| | - B D Lohman
- Departments of Emergency and Critical Care Medicine, Saint-Marianna University School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511 Kanagawa, Japan.
| | - K Morimoto
- Department of Radiology, National Hospital Organization Disaster Medical Center, Tachikawa, Tokyo, Japan.
| | - Y Ichinose
- Department of Radiology, National Hospital Organization Disaster Medical Center, Tachikawa, Tokyo, Japan.
| | - T Hattori
- Department of Radiology, Saint-Marianna University School of Medicine, Kawasaki, Kanagawa, Japan.
| | - Y Taira
- Departments of Emergency and Critical Care Medicine, Saint-Marianna University School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511 Kanagawa, Japan.
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Mondal A, Takehara A, Aizawa S, Tanaka T, Fujitsuka N, Hattori T, Sakai T, Sakata I. Rikkunshito induces gastric relaxation via the β-adrenergic pathway in Suncus murinus. Neurogastroenterol Motil 2015; 27:875-84. [PMID: 25846270 DOI: 10.1111/nmo.12564] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 03/06/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND Rikkunshito (RKT) is a gastroprotective herbal medicine. In this study, we investigated the role of RKT in the relaxation of the gastric body (fundus and corpus) and antrum. METHODS We used Suncus murinus, a unique small model animal with similar gastrointestinal motility to humans and dogs. RKT was added at 0.1, 1.0, and 5.0 mg/mL to induce relaxation in vitro; the outcome measure was the intensity of relaxation. The number of spontaneous antral contractions in the absence or the presence of RKT was also counted. KEY RESULTS Rikkunshito induced the relaxation of the gastric body and antrum and decreased the number of spontaneous antral contractions in a dose-dependent manner. The responses to RKT (1.0 mg/mL) were not affected by pretreatment with atropine, N-nitro-l-arginine methyl ester, ritanserin, or ondansetron. On the other hand, timolol almost completely reversed the relaxation induced by RKT (1.0 mg/mL) on the gastric body and antrum and the occurrence of the spontaneous antral contractions. Both butoxamine, a β(2) -adrenoreceptor antagonist, and L 748337, a β(3) -adrenoreceptor antagonist, but not CGP 20712, a β(1) -adrenoreceptor antagonist, significantly reversed the RKT-induced (1.0 mg/mL) gastric relaxation. CONCLUSIONS & INFERENCES These results indicate that RKT stimulates and modulates gastric relaxation through β(2) - and β(3) -adrenergic, but not β(1) -adrenergic, pathways in S. murinus.
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Affiliation(s)
- A Mondal
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - A Takehara
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - S Aizawa
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - T Tanaka
- Faculty of Pharmaceutical Sciences, Josai University, Sakado-shi, Saitama, Japan
| | - N Fujitsuka
- Tsumura Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - T Hattori
- Tsumura Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - T Sakai
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - I Sakata
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
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Osaki K, Kosen S, Indriasih E, Pritasari K, Hattori T. Factors affecting the utilisation of maternal, newborn, and child health services in Indonesia: the role of the Maternal and Child Health Handbook. Public Health 2015; 129:582-6. [PMID: 25765932 DOI: 10.1016/j.puhe.2015.01.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/16/2014] [Accepted: 01/04/2015] [Indexed: 11/19/2022]
Affiliation(s)
- K Osaki
- Japan International Cooperation Agency, Tokyo, Japan.
| | - S Kosen
- Ministry of Health, Republic of Indonesia, Jakarta, Indonesia.
| | - E Indriasih
- Ministry of Health, Republic of Indonesia, Jakarta, Indonesia.
| | - K Pritasari
- Ministry of Health, Republic of Indonesia, Jakarta, Indonesia.
| | - T Hattori
- Health and Development Service, Tokyo, Japan.
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