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Kobayashi Y, Hanai S, Iwamoto T, Nakagomi D. Refractory systemic lupus erythematosus with neuropsychiatric manifestations successfully treated with anifrolumab. Scand J Rheumatol 2024; 53:226-228. [PMID: 38275190 DOI: 10.1080/03009742.2024.2306053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024]
Affiliation(s)
- Y Kobayashi
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
| | - S Hanai
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
| | - T Iwamoto
- Department of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan
| | - D Nakagomi
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
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Thamizhchelvan AM, Masoud AR, Su S, Lu Y, Peng H, Kobayashi Y, Wang Y, Archer NK, Hong S. Bactericidal Efficacy of the Combination of Maresin-like Proresolving Mediators and Carbenicillin Action on Biofilm-Forming Burn Trauma Infection-Related Bacteria. Int J Mol Sci 2024; 25:2792. [PMID: 38474038 PMCID: PMC10932429 DOI: 10.3390/ijms25052792] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Biofilm-associated bacterial infections are the major reason for treatment failure in many diseases including burn trauma infections. Uncontrolled inflammation induced by bacteria leads to materiality, tissue damage, and chronic diseases. Specialized proresolving mediators (SPMs), including maresin-like lipid mediators (MarLs), are enzymatically biosynthesized from omega-3 essential long-chain polyunsaturated fatty acids, especially docosahexaenoic acid (DHA), by macrophages and other leukocytes. SPMs exhibit strong inflammation-resolving activities, especially inflammation provoked by bacterial infection. In this study, we explored the potential direct inhibitory activities of three MarLs on Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacteria in their biofilms that are leading bacteria in burn trauma-related infections. We also examined the effects of MarLs on the bactericidal activities of a typical broad-spectrum antibiotic, carbenicillin (carb), on these bacteria in their preformed biofilms. The results revealed that MarLs combined with carbenicillin can inhibit the survival of Gram-positive and Gram-negative bacteria in their biofilms although MarLs alone did not exhibit bactericidal activity. Thus, our findings suggest that the combination of MarLs and carbenicillin can lower the antibiotic requirements to kill the bacteria in preformed biofilms.
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Affiliation(s)
- Anbu Mozhi Thamizhchelvan
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Abdul-Razak Masoud
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Shanchun Su
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Yan Lu
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Hongying Peng
- Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45221, USA
| | - Yuichi Kobayashi
- Department of Bioengineering, Tokyo Institute of Technology, Box B-52, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Kanagawa, Japan
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Kanagawa, Japan
| | - Yu Wang
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD 21231, USA; (Y.W.); (N.K.A.)
| | - Nathan K. Archer
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD 21231, USA; (Y.W.); (N.K.A.)
| | - Song Hong
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
- Department of Ophthalmology, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
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Ogawa N, Gonda K, Kobayashi Y. Synthesis of fulgidic acid and the two possible stereoisomers of chaenomic acid D. Org Biomol Chem 2024; 22:550-553. [PMID: 38112044 DOI: 10.1039/d3ob01820b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
We synthesized fulgidic acid and the proposed structure for chaenomic acid D. The core part of the two natural products was constructed stereoselectively by the addition of acetic acid to the α,β-unsaturated epoxy alcohol in the presence of a palladium catalyst. Subsequently, the two natural products were synthesized from the intermediate in a few steps. The data for the synthesized fulgidic acid were in good agreement with the reported data. Chaenomic acid was in good agreement with the natural product in the 1H and 13C NMR data, but not in the optical rotation. The 15R-isomer of chaenomic acid was also synthesized, but the 1H and 13C NMR data did not agree with the natural product.
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Affiliation(s)
- Narihito Ogawa
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Keisuke Gonda
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Yuichi Kobayashi
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
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4
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Yoshiura T, Masuda T, Kobayashi Y, Kikuhara Y, Ishibashi T, Nonaka H, Oku T, Sato T, Funama Y. Iodine contrast volume reduction in preoperative transcatheter aortic valve implantation computed tomography: Comparison with 64- and 256-multidetector row computed tomography. Radiography (Lond) 2024; 30:408-415. [PMID: 38176131 DOI: 10.1016/j.radi.2023.12.017] [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] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/24/2023] [Accepted: 12/25/2023] [Indexed: 01/06/2024]
Abstract
INTRODUCTION This study aimed to compare the vascular enhancement and radiation dose in preoperative transcatheter aortic valve implantation (TAVI) computed tomography (CT) with a reduced contrast medium (CM) using volume scans in 256-multidetector row CT (MDCT) with a standard CM using 64-MDCT. METHODS This study included 78 patients with preoperative TAVI CT with either 64- or 256-MDCT. The CM was injected at 1.5 mL/kg in the 64-MDCT group and 1.0 mL/kg in the 256-MDCT group. We compared vascular enhancement of the aortic root and access routes, image quality (IQ) scores, and radiation dose in both groups. RESULTS Despite the reduced CM (by 33 %) in the 256-MDCT group, the mean vascular enhancement of the right and left subclavian arteries was significantly higher than that in the 64-MDCT group [284 and 267 Hounsfield units (HU) vs. 376 and 359 HU; p < 0.05]; however, no significant differences in the mean vascular enhancement in the ascending aorta, abdominal aorta at the celiac level, and bilateral common femoral arteries were observed between the two groups (p > 0.05 for all). The median IQ scores at the aortic root were higher in the 256-MDCT group than in the 64-MDCT group (3 vs. 4; p < 0.05), and those at the femoral access routes were comparable (4 vs. 4; p = 0.33). The mean effective dose was significantly reduced by 30 % in the 256-MDCT group (23.6 vs. 16.3 mSv; p < 0.05). CONCLUSION In preoperative TAVI CT, volume scans using 256-MDCT provide comparable or better vascular enhancement and IQ with a 30 % reduction in CM and radiation dose than those using 64-MDCT. IMPLICATIONS FOR PRACTICE Volume scan using 256-MDCT for preoperative TAVI CT may reduce CM and radiation dose in TAVI patients with renal dysfunction.
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Affiliation(s)
- T Yoshiura
- Graduate School of Health Sciences, Kumamoto University, Kuhonji 4-24-1, Chuo-ku, Kumamoto, 860-0976, Japan; Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - T Masuda
- Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Matsushima 288, Okayama, 701-0193, Japan.
| | - Y Kobayashi
- Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - Y Kikuhara
- Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - T Ishibashi
- Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - H Nonaka
- Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - T Oku
- Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - T Sato
- Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.
| | - Y Funama
- Department of Medical Radiation Sciences, Faculty of Life Sciences, Kumamoto University, Honjo 1-1-1, Chuo-ku, Kumamoto, 860-8556, Japan.
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Noda S, Hanai S, Ito R, Kobayashi Y, Nakagomi D. Isolated thoracic aortitis following mRNA vaccination against SARS-CoV-2. QJM 2023; 116:875-876. [PMID: 37294845 DOI: 10.1093/qjmed/hcad126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Indexed: 06/11/2023] Open
Affiliation(s)
- S Noda
- Department of Rheumatology and Department of Diabetes and Endocrinology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - S Hanai
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - R Ito
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - Y Kobayashi
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - D Nakagomi
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
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Ono R, Kobayashi Y. Uremic frost. QJM 2023; 116:798-799. [PMID: 37195438 DOI: 10.1093/qjmed/hcad091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Indexed: 05/18/2023] Open
Affiliation(s)
- R Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Y Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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Kawaguchi K, Kuroda K, Zhao Z, Tani S, Harasawa A, Fukushima Y, Tanaka H, Noguchi R, Iimori T, Yaji K, Fujisawa M, Shin S, Komori F, Kobayashi Y, Kondo T. Time-, spin-, and angle-resolved photoemission spectroscopy with a 1-MHz 10.7-eV pulse laser. Rev Sci Instrum 2023; 94:083902. [PMID: 37540119 DOI: 10.1063/5.0151859] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 07/05/2023] [Indexed: 08/05/2023]
Abstract
We describe a setup of time-, spin-, and angle-resolved photoemission spectroscopy (tr-SARPES) employing a 10.7 eV (λ = 115.6 nm) pulse laser at a 1 MHz repetition rate as a probe photon source. This equipment effectively combines the technologies of a high-power Yb:fiber laser, ultraviolet-driven harmonic generation in Xe gas, and a SARPES apparatus equipped with very-low-energy-electron-diffraction spin detectors. A high repetition rate (1 MHz) of the probe laser allows experiments with the photoemission space-charge effects significantly reduced, despite a high flux of 1013 photons/s on the sample. The relatively high photon energy (10.7 eV) also brings the capability of observing a wide momentum range that covers the entire Brillouin zone of many materials while ensuring high momentum resolution. The experimental setup overcomes the low efficiency of spin-resolved measurements, which gets even more severe for the pump-probed unoccupied states, and affords the opportunity to investigate ultrafast electron and spin dynamics of modern quantum materials with energy and time resolutions of 25 meV and 360 fs, respectively.
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Affiliation(s)
- Kaishu Kawaguchi
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Kenta Kuroda
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- International Institute for Sustainability with Knotted Chiral Meta Matter (WPI-SKCM2), Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Z Zhao
- School of Information Science and Engineering, Shandong University, Qingdao 266237, China
| | - S Tani
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - A Harasawa
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Fukushima
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Tanaka
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Noguchi
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Iimori
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - K Yaji
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003, Japan
| | - M Fujisawa
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - S Shin
- Office of University Professor, The University of Tokyo, Chiba 277-8581, Japan
| | - F Komori
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kobayashi
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Takeshi Kondo
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
- Trans-Scale Quantum Science Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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8
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Takahashi T, Kobayashi Y, Saeed O, Vukelic S, Jorde U, Shin J, Patel S. Optical Coherence Tomography Evaluation of Donor Transmitted Coronary Atherosclerosis and Risk of Cardiac Allograft Vasculopathy. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.170] [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: 04/05/2023] Open
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9
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Takenaka S, Sato T, Kazui S, Yasui Y, Saiin K, Naito S, Takahashi Y, Mizuguchi Y, Tada A, Kobayashi Y, Omote K, Konishi T, Kamiya K, Ooka T, Nagai T, Wakasa S, Anzai T. Clinical Utility of Near-Infrared Spectroscopy Intravascular Ultrasound in the Assessment of Rapidly Progressive Cardiac Allograft Vasculopathy. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.481] [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: 04/05/2023] Open
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10
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Sato T, Takenaka S, Kazui S, Yasui Y, Saiin K, Naito S, Takahashi Y, Mizuguchi Y, Tada A, Kobayashi Y, Omote K, Konishi T, Kamiya K, Ooka T, Nagai T, Wakasa S, Anzai T. Clinical Implications of Hemodynamic Assessment in Small Body Surface Area Patients with Left Ventricular Assist Device. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.805] [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: 04/05/2023] Open
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Hanai S, Kobayashi Y, Ito R, Harama K, Nakagomi D. Thrombotic microangiopathy with refractory lupus nephritis successfully treated by combining rituximab with belimumab. Scand J Rheumatol 2023; 52:227-229. [PMID: 36409225 DOI: 10.1080/03009742.2022.2140483] [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: 11/23/2022]
Affiliation(s)
- S Hanai
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
| | - Y Kobayashi
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
| | - R Ito
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
| | - K Harama
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
| | - D Nakagomi
- Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan
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12
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Abe H, Abe S, Acciari VA, Aniello T, Ansoldi S, Antonelli LA, Arbet Engels A, Arcaro C, Artero M, Asano K, Baack D, Babić A, Baquero A, Barres de Almeida U, Barrio JA, Batković I, Baxter J, Becerra González J, Bednarek W, Bernardini E, Bernardos M, Berti A, Besenrieder J, Bhattacharyya W, Bigongiari C, Biland A, Blanch O, Bonnoli G, Bošnjak Ž, Burelli I, Busetto G, Carosi R, Carretero-Castrillo M, Ceribella G, Chai Y, Chilingarian A, Cikota S, Colombo E, Contreras JL, Cortina J, Covino S, D'Amico G, D'Elia V, Da Vela P, Dazzi F, De Angelis A, De Lotto B, Del Popolo A, Delfino M, Delgado J, Delgado Mendez C, Depaoli D, Di Pierro F, Di Venere L, Do Souto Espiñeira E, Dominis Prester D, Donini A, Dorner D, Doro M, Elsaesser D, Emery G, Fallah Ramazani V, Fariña L, Fattorini A, Font L, Fruck C, Fukami S, Fukazawa Y, García López RJ, Garczarczyk M, Gasparyan S, Gaug M, Giesbrecht Paiva JG, Giglietto N, Giordano F, Gliwny P, Godinović N, Green JG, Green D, Hadasch D, Hahn A, Hassan T, Heckmann L, Herrera J, Hrupec D, Hütten M, Imazawa R, Inada T, Iotov R, Ishio K, Jiménez Martínez I, Jormanainen J, Kerszberg D, Kobayashi Y, Kubo H, Kushida J, Lamastra A, Lelas D, Leone F, Lindfors E, Linhoff L, Lombardi S, Longo F, López-Coto R, López-Moya M, López-Oramas A, Loporchio S, Lorini A, Lyard E, Machado de Oliveira Fraga B, Majumdar P, Makariev M, Maneva G, Mang N, Manganaro M, Mangano S, Mannheim K, Mariotti M, Martínez M, Mas Aguilar A, Mazin D, Menchiari S, Mender S, Mićanović S, Miceli D, Miener T, Miranda JM, Mirzoyan R, Molina E, Mondal HA, Moralejo A, Morcuende D, Moreno V, Nakamori T, Nanci C, Nava L, Neustroev V, Nievas Rosillo M, Nigro C, Nilsson K, Nishijima K, Njoh Ekoume T, Noda K, Nozaki S, Ohtani Y, Oka T, Otero-Santos J, Paiano S, Palatiello M, Paneque D, Paoletti R, Paredes JM, Pavletić L, Persic M, Pihet M, Podobnik F, Prada Moroni PG, Prandini E, Principe G, Priyadarshi C, Puljak I, Rhode W, Ribó M, Rico J, Righi C, Rugliancich A, Sahakyan N, Saito T, Sakurai S, Satalecka K, Saturni FG, Schleicher B, Schmidt K, Schmuckermaier F, Schubert JL, Schweizer T, Sitarek J, Sliusar V, Sobczynska D, Spolon A, Stamerra A, Strišković J, Strom D, Strzys M, Suda Y, Surić T, Takahashi M, Takeishi R, Tavecchio F, Temnikov P, Terauchi K, Terzić T, Teshima M, Tosti L, Truzzi S, Tutone A, Ubach S, van Scherpenberg J, Vazquez Acosta M, Ventura S, Verguilov V, Viale I, Vigorito CF, Vitale V, Vovk I, Walter R, Will M, Wunderlich C, Yamamoto T, Zarić D, Hiroshima N, Kohri K. Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation up to 100 TeV toward the Galactic Center with MAGIC. Phys Rev Lett 2023; 130:061002. [PMID: 36827578 DOI: 10.1103/physrevlett.130.061002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 11/02/2022] [Accepted: 12/15/2022] [Indexed: 06/18/2023]
Abstract
Linelike features in TeV γ rays constitute a "smoking gun" for TeV-scale particle dark matter and new physics. Probing the Galactic Center region with ground-based Cherenkov telescopes enables the search for TeV spectral features in immediate association with a dense dark matter reservoir at a sensitivity out of reach for satellite γ-ray detectors, and direct detection and collider experiments. We report on 223 hours of observations of the Galactic Center region with the MAGIC stereoscopic telescope system reaching γ-ray energies up to 100 TeV. We improved the sensitivity to spectral lines at high energies using large-zenith-angle observations and a novel background modeling method within a maximum-likelihood analysis in the energy domain. No linelike spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to ⟨σv⟩≲5×10^{-28} cm^{3} s^{-1} at 1 TeV and ⟨σv⟩≲1×10^{-25} cm^{3} s^{-1} at 100 TeV, achieving the best limits to date for a dark matter mass above 20 TeV and a cuspy dark matter profile at the Galactic Center. Finally, we use the derived limits for both cuspy and cored dark matter profiles to constrain supersymmetric wino models.
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Affiliation(s)
- H Abe
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - S Abe
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - V A Acciari
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - T Aniello
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - S Ansoldi
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - L A Antonelli
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - A Arbet Engels
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - C Arcaro
- Università di Padova and INFN, I-35131 Padova, Italy
| | - M Artero
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - K Asano
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - D Baack
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - A Babić
- Croatian MAGIC Group: University of Zagreb, Faculty of Electrical Engineering and Computing (FER), 10000 Zagreb, Croatia
| | - A Baquero
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - U Barres de Almeida
- Centro Brasileiro de Pesquisas Físicas (CBPF), 22290-180 URCA, Rio de Janeiro (RJ), Brazil
| | - J A Barrio
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - I Batković
- Università di Padova and INFN, I-35131 Padova, Italy
| | - J Baxter
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - J Becerra González
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - W Bednarek
- University of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, Poland
| | - E Bernardini
- Università di Padova and INFN, I-35131 Padova, Italy
| | - M Bernardos
- Instituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - A Berti
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - J Besenrieder
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - W Bhattacharyya
- Deutsches Elektronen-Synchrotron (DESY), D-15738 Zeuthen, Germany
| | - C Bigongiari
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - A Biland
- ETH Zürich, CH-8093 Zürich, Switzerland
| | - O Blanch
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - G Bonnoli
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - Ž Bošnjak
- Croatian MAGIC Group: University of Zagreb, Faculty of Electrical Engineering and Computing (FER), 10000 Zagreb, Croatia
| | - I Burelli
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - G Busetto
- Università di Padova and INFN, I-35131 Padova, Italy
| | - R Carosi
- Università di Pisa and INFN Pisa, I-56126 Pisa, Italy
| | | | - G Ceribella
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - Y Chai
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - A Chilingarian
- Armenian MAGIC Group: A. Alikhanyan National Science Laboratory, 0036 Yerevan, Armenia
| | - S Cikota
- Croatian MAGIC Group: University of Zagreb, Faculty of Electrical Engineering and Computing (FER), 10000 Zagreb, Croatia
| | - E Colombo
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - J L Contreras
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - J Cortina
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, Spain
| | - S Covino
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - G D'Amico
- Department for Physics and Technology, University of Bergen, Norway
| | - V D'Elia
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - P Da Vela
- Università di Pisa and INFN Pisa, I-56126 Pisa, Italy
| | - F Dazzi
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - A De Angelis
- Università di Padova and INFN, I-35131 Padova, Italy
| | - B De Lotto
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - A Del Popolo
- INFN MAGIC Group: INFN Sezione di Catania and Dipartimento di Fisica e Astronomia, University of Catania, I-95123 Catania, Italy
| | - M Delfino
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - J Delgado
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - C Delgado Mendez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, Spain
| | - D Depaoli
- INFN MAGIC Group: INFN Sezione di Torino and Università degli Studi di Torino, I-10125 Torino, Italy
| | - F Di Pierro
- INFN MAGIC Group: INFN Sezione di Torino and Università degli Studi di Torino, I-10125 Torino, Italy
| | - L Di Venere
- INFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, Italy
| | - E Do Souto Espiñeira
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - D Dominis Prester
- Croatian MAGIC Group: University of Rijeka, Department of Physics, 51000 Rijeka, Croatia
| | - A Donini
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - D Dorner
- Universität Würzburg, D-97074 Würzburg, Germany
| | - M Doro
- Università di Padova and INFN, I-35131 Padova, Italy
| | - D Elsaesser
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - G Emery
- University of Geneva, Chemin d'Ecogia 16, CH-1290 Versoix, Switzerland
| | - V Fallah Ramazani
- Finnish MAGIC Group: Finnish Centre for Astronomy with ESO, University of Turku, FI-20014 Turku, Finland
| | - L Fariña
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - A Fattorini
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - L Font
- Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - C Fruck
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - S Fukami
- ETH Zürich, CH-8093 Zürich, Switzerland
| | - Y Fukazawa
- Japanese MAGIC Group: Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 739-8526 Hiroshima, Japan
| | - R J García López
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - M Garczarczyk
- Deutsches Elektronen-Synchrotron (DESY), D-15738 Zeuthen, Germany
| | - S Gasparyan
- Armenian MAGIC Group: ICRANet-Armenia at NAS RA, 0019 Yerevan, Armenia
| | - M Gaug
- Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - J G Giesbrecht Paiva
- Centro Brasileiro de Pesquisas Físicas (CBPF), 22290-180 URCA, Rio de Janeiro (RJ), Brazil
| | - N Giglietto
- INFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, Italy
| | - F Giordano
- INFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, Italy
| | - P Gliwny
- University of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, Poland
| | - N Godinović
- Croatian MAGIC Group: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture (FESB), 21000 Split, Croatia
| | - J G Green
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - D Green
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - D Hadasch
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - A Hahn
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - T Hassan
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, Spain
| | - L Heckmann
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - J Herrera
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - D Hrupec
- Croatian MAGIC Group: Josip Juraj Strossmayer University of Osijek, Department of Physics, 31000 Osijek, Croatia
| | - M Hütten
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - R Imazawa
- Japanese MAGIC Group: Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 739-8526 Hiroshima, Japan
| | - T Inada
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - R Iotov
- Universität Würzburg, D-97074 Würzburg, Germany
| | - K Ishio
- University of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, Poland
| | - I Jiménez Martínez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, Spain
| | - J Jormanainen
- Finnish MAGIC Group: Finnish Centre for Astronomy with ESO, University of Turku, FI-20014 Turku, Finland
| | - D Kerszberg
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - Y Kobayashi
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - H Kubo
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - J Kushida
- Japanese MAGIC Group: Department of Physics, Tokai University, Hiratsuka, 259-1292 Kanagawa, Japan
| | - A Lamastra
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - D Lelas
- Croatian MAGIC Group: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture (FESB), 21000 Split, Croatia
| | - F Leone
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - E Lindfors
- Finnish MAGIC Group: Finnish Centre for Astronomy with ESO, University of Turku, FI-20014 Turku, Finland
| | - L Linhoff
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - S Lombardi
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - F Longo
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - R López-Coto
- Università di Padova and INFN, I-35131 Padova, Italy
| | - M López-Moya
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - A López-Oramas
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - S Loporchio
- INFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell'Università e del Politecnico di Bari, I-70125 Bari, Italy
| | - A Lorini
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - E Lyard
- University of Geneva, Chemin d'Ecogia 16, CH-1290 Versoix, Switzerland
| | | | - P Majumdar
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata 700064, West Bengal, India
| | - M Makariev
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - G Maneva
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - N Mang
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - M Manganaro
- Croatian MAGIC Group: University of Rijeka, Department of Physics, 51000 Rijeka, Croatia
| | - S Mangano
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, Spain
| | - K Mannheim
- Universität Würzburg, D-97074 Würzburg, Germany
| | - M Mariotti
- Università di Padova and INFN, I-35131 Padova, Italy
| | - M Martínez
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - A Mas Aguilar
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - D Mazin
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - S Menchiari
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - S Mender
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - S Mićanović
- Croatian MAGIC Group: University of Rijeka, Department of Physics, 51000 Rijeka, Croatia
| | - D Miceli
- Università di Padova and INFN, I-35131 Padova, Italy
| | - T Miener
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - J M Miranda
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - R Mirzoyan
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - E Molina
- Universitat de Barcelona, ICCUB, IEEC-UB, E-08028 Barcelona, Spain
| | - H A Mondal
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata 700064, West Bengal, India
| | - A Moralejo
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - D Morcuende
- IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - V Moreno
- Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - T Nakamori
- Japanese MAGIC Group: Department of Physics, Yamagata University, Yamagata 990-8560, Japan
| | - C Nanci
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - L Nava
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - V Neustroev
- Finnish MAGIC Group: Space Physics and Astronomy Research Unit, University of Oulu, FI-90014 Oulu, Finland
| | - M Nievas Rosillo
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - C Nigro
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - K Nilsson
- Finnish MAGIC Group: Finnish Centre for Astronomy with ESO, University of Turku, FI-20014 Turku, Finland
| | - K Nishijima
- Japanese MAGIC Group: Department of Physics, Tokai University, Hiratsuka, 259-1292 Kanagawa, Japan
| | - T Njoh Ekoume
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - K Noda
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - S Nozaki
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - Y Ohtani
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - T Oka
- Japanese MAGIC Group: Department of Physics, Kyoto University, 606-8502 Kyoto, Japan
| | - J Otero-Santos
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - S Paiano
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - M Palatiello
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - D Paneque
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - R Paoletti
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - J M Paredes
- Universitat de Barcelona, ICCUB, IEEC-UB, E-08028 Barcelona, Spain
| | - L Pavletić
- Croatian MAGIC Group: University of Rijeka, Department of Physics, 51000 Rijeka, Croatia
| | - M Persic
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - M Pihet
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - F Podobnik
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | | | - E Prandini
- Università di Padova and INFN, I-35131 Padova, Italy
| | - G Principe
- Università di Udine and INFN Trieste, I-33100 Udine, Italy
| | - C Priyadarshi
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - I Puljak
- Croatian MAGIC Group: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture (FESB), 21000 Split, Croatia
| | - W Rhode
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - M Ribó
- Universitat de Barcelona, ICCUB, IEEC-UB, E-08028 Barcelona, Spain
| | - J Rico
- Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), E-08193 Bellaterra (Barcelona), Spain
| | - C Righi
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - A Rugliancich
- Università di Pisa and INFN Pisa, I-56126 Pisa, Italy
| | - N Sahakyan
- Armenian MAGIC Group: ICRANet-Armenia at NAS RA, 0019 Yerevan, Armenia
| | - T Saito
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - S Sakurai
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - K Satalecka
- Finnish MAGIC Group: Finnish Centre for Astronomy with ESO, University of Turku, FI-20014 Turku, Finland
| | - F G Saturni
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | | | - K Schmidt
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | | | - J L Schubert
- Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - T Schweizer
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - J Sitarek
- University of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, Poland
| | - V Sliusar
- University of Geneva, Chemin d'Ecogia 16, CH-1290 Versoix, Switzerland
| | - D Sobczynska
- University of Lodz, Faculty of Physics and Applied Informatics, Department of Astrophysics, 90-236 Lodz, Poland
| | - A Spolon
- Università di Padova and INFN, I-35131 Padova, Italy
| | - A Stamerra
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - J Strišković
- Croatian MAGIC Group: Josip Juraj Strossmayer University of Osijek, Department of Physics, 31000 Osijek, Croatia
| | - D Strom
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - M Strzys
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - Y Suda
- Japanese MAGIC Group: Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 739-8526 Hiroshima, Japan
| | - T Surić
- Croatian MAGIC Group: Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - M Takahashi
- Japanese MAGIC Group: Institute for Space-Earth Environmental Research and Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, 464-6801 Nagoya, Japan
| | - R Takeishi
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - F Tavecchio
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - P Temnikov
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - K Terauchi
- Japanese MAGIC Group: Department of Physics, Kyoto University, 606-8502 Kyoto, Japan
| | - T Terzić
- Croatian MAGIC Group: University of Rijeka, Department of Physics, 51000 Rijeka, Croatia
| | - M Teshima
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - L Tosti
- INFN MAGIC Group: INFN Sezione di Perugia, I-06123 Perugia, Italy
| | - S Truzzi
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - A Tutone
- National Institute for Astrophysics (INAF), I-00136 Rome, Italy
| | - S Ubach
- Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | | | - M Vazquez Acosta
- Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain
| | - S Ventura
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - V Verguilov
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - I Viale
- Università di Padova and INFN, I-35131 Padova, Italy
| | - C F Vigorito
- INFN MAGIC Group: INFN Sezione di Torino and Università degli Studi di Torino, I-10125 Torino, Italy
| | - V Vitale
- INFN MAGIC Group: INFN Roma Tor Vergata, I-00133 Roma, Italy
| | - I Vovk
- Japanese MAGIC Group: Institute for Cosmic Ray Research (ICRR), The University of Tokyo, Kashiwa, 277-8582 Chiba, Japan
| | - R Walter
- University of Geneva, Chemin d'Ecogia 16, CH-1290 Versoix, Switzerland
| | - M Will
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - C Wunderlich
- Università di Siena and INFN Pisa, I-53100 Siena, Italy
| | - T Yamamoto
- Japanese MAGIC Group: Department of Physics, Konan University, Kobe, Hyogo 658-8501, Japan
| | - D Zarić
- Croatian MAGIC Group: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture (FESB), 21000 Split, Croatia
| | - N Hiroshima
- Department of Physics, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
- RIKEN iTHEMS, Wako, Saitama 351-0198, Japan
| | - K Kohri
- Theory Center, IPNS, KEK, Tsukuba, Ibaraki 305-0801, Japan
- The Graduate University for Advanced Studies (SOKENDAI), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
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Yasukawa K, Okuno T, Ogawa N, Kobayashi Y, Yokomizo T. Identification and characterization of bioactive metabolites of 12-hydroxyheptadecatrienoic acid, a ligand for leukotriene B4 receptor 2. J Biochem 2022; 173:293-305. [PMID: 36539331 DOI: 10.1093/jb/mvac105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/08/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Abstract
12(S)-hydroxyheptadecatrienoic acid (12-HHT) is a bioactive fatty acid synthesized from arachidonic acid via the cyclooxygenase pathway and serves as an endogenous ligand for the low-affinity leukotriene B4 receptor 2 (BLT2). Although the 12-HHT/BLT2 axis contributes to the maintenance of epithelial homeostasis, 12-HHT metabolism under physiological conditions is unclear. In this study, 12-keto-heptadecatrienoic acid (12-KHT) and 10,11-dihydro-12-KHT (10,11dh-12-KHT) were detected as 12-HHT metabolites in the human megakaryocytic cell line MEG01s. We found that 12-KHT and 10,11dh-12-KHT are produced from 12-HHT by 15-hydroxyprostaglandin dehydrogenase (15-PGDH) and prostaglandin reductase 1 (PTGR1), key enzymes in the degradation of prostaglandins, respectively. The 15-PGDH inhibitor SW033291 completely suppressed the production of 12-KHT and 10,11dh-12-KHT in MEG01s cells, resulting in a 9-fold accumulation of 12-HHT. 12-KHT and 10,11dh-12-KHT were produced in mouse skin wounds, and the levels were significantly suppressed by SW033291. Surprisingly, the agonistic activities of 12-KHT and 10,11dh-12-KHT on BLT2 were comparable to that of 12-HHT. Taken together,12-HHT is metabolized into 12-KHT by 15-PGDH, and then 10,11dh-12-KHT by PTGR1 without losing the agonistic activity.
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Affiliation(s)
- Ken Yasukawa
- Juntendo University Graduate School of Medicine Department of Biochemistry, , Tokyo 113-8421, Japan
- Drug Discovery Research Department, Sato Pharmaceutical Co., Ltd. , Tokyo 140-0011, Japan
| | - Toshiaki Okuno
- Juntendo University Graduate School of Medicine Department of Biochemistry, , Tokyo 113-8421, Japan
| | - Narihito Ogawa
- Meiji University Department of Applied Chemistry, , Kanagawa 214-8571, Japan
| | - Yuichi Kobayashi
- Meiji University Organization for the Strategic Coordination of Research and Intellectual Properties, , Kanagawa 214-8571, Japan
| | - Takehiko Yokomizo
- Juntendo University Graduate School of Medicine Department of Biochemistry, , Tokyo 113-8421, Japan
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14
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Lu Y, Mitsuda C, Takaki H, Obina T, Kobayashi Y. Precise pulsed magnetic field mapping using a compact pick-up probe for a pulsed sextupole magnet. Rev Sci Instrum 2022; 93:123306. [PMID: 36586949 DOI: 10.1063/5.0111979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
A pulsed sextupole magnet was used for beam injection at the KEK-Photon Factory (KEK-PF). During the top-up injection, oscillation of the stored beam was observed. To investigate this issue, a compact pick-up probe has been developed for measuring peak fields around the zero-magnetic-field region where the stored beam passes. The probe has two coils: a main coil and a background coil. The width and length of the main coil are only 3.2 and 5.8 mm, respectively. The voltage signal from the background coil is subtracted from that of the main coil to obtain an effective voltage signal. The results show that the peak field of a pulsed magnet can be measured with a sufficient accuracy for magnetic field mapping. A magnetic field signal with an amplitude of 2.2 × 10-4 T was measured clearly. The longitudinal field structure that contains the magnetic field generated by the eddy-current effect was observed, which explains the oscillation of the stored beam at the KEK-PF.
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Affiliation(s)
- Y Lu
- The Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - C Mitsuda
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - H Takaki
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - T Obina
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Y Kobayashi
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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15
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Imafuku K, Iwata H, Natsuga K, Okumura M, Kobayashi Y, Kitahata H, Kubo A, Nagayama M, Ujiie H. 197 Tissue proliferation and turnover spatially regulates tight junctions in squamous epithelia. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.208] [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: 11/19/2022]
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16
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Kobayashi Y, Hirotsu T. Synthesis of (S)-Nyasol through the Copper-catalyzed Propargylic Substitution. Synlett 2022. [DOI: 10.1055/a-1968-2684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
(S)-Nyasol was selected as the target to demonstrate the efficiency of the copper-catalyzed substitution of secondary propargylic phosphates. The key phosphate (R)-TBDPSO(CH2)2CH(C≡CC6H4OTBS)-(OP(O)(OEt)2) was synthesized from TBDPSO(CH2)2CO2H in four steps. The substitution of the phosphate with TBSOC6H4MgBr in the presence of CuBr·Me2S as a catalyst in THF/DME proceeded with both stereo- and regioselectivity at the propargylic position. All the silyl groups in the propargylic product, TBDPSO(CH2)2CH(C≡CC6H4OTBS)(C6H4OTBS), were removed, and the acetylene bond was reduced using active Zn to produce the cis olefin. Finally, the HO(CH2)2 moiety was converted to CH2=CH-, thus producing (S)-nyasol with 97% cis selectivity, 94.5% ee, and >99% es. Similarly, dihydro-nyasol was synthesized via hydrogenation of the substitution product followed by construction of the terminal olefin.
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Affiliation(s)
- Yuichi Kobayashi
- Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan
| | - Takayuki Hirotsu
- Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan
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17
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Nakano M, Kondo Y, Nakano M, Kajiyama T, Ito R, Kitagawa M, Sugawara M, Chiba T, Ryuzaki S, Yoshino Y, Kobayashi Y. Prognosis of hypertrophic cardiomyopathy in Japanese patients with an implantable cardioverter defibrillator -focus on apical hypertrophic cardiomyopathy. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.663] [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: 11/13/2022] Open
Abstract
Abstract
Background
Patients with hypertrophic cardiomyopathy (HCM) are at high risk of lethal arrhythmias, and implantable cardioverter defibrillators (ICD) are widely used for prevention of sudden cardiac death (SCD). Apical HCM is a phenotype variant of HCM, with hypertrophy predominantly affecting apex, that was initially described 30 years ago. Apical HCM patients may have different clinical prognosis compared with other subsets of HCM. In previous studies, apical HCM patients seem to have a more benign prognosis than other types of HCM. However, little is known about the long-term outcomes of apical HCM patients and there are many unclear points. Moreover, there are few reports about the clinical prognosis in apical HCM patients with an ICD.
Objective
The aim of this study is to identify the difference between the prognosis of apical and the other types of HCM patients with an ICD.
Methods
We retrospectively analyzed the database of our ICD clinic. All subjects underwent ICD implantation between October 2006 and September 2018. We classified HCM patients into LV outflow tract obstruction (LVOTO) and midventricular obstruction (MVO), apical HCM and other non-obstructive types. We divided all the patients into apical and other types of HCM, and examined their background, incidence of appropriate ICD therapies, hospitalization for heart failure, electrical storm and death.
Results
A total of consecutive 64 Japanese HCM patients with an ICD (follow-up period, 86±24 months; age, 65±14 years; male sex, 83%; left ventricular ejection fraction, 56±14%; LV max wall-thickness, 19±7mm; LV apical aneurysm, 9.4%; 5-year risk of SCD, 4.4±2.1) were enrolled in this study. We classified them into 14 apical HCM and 50 other types of HCM patients. The clinical characteristics and major clinical events of these patients are shown in the Table 1. During the follow-up periods, there were no significant differences in the incidence of electrical storm, hospitalization for heart failure and death between the 2 groups (p=0.11; p=0.60; p=0.39). Appropriate ICD therapies occurred in 6 of 14 (43%) patients with apical HCM and 5 of 50 (10%) patients with other types of HCM (p=0.010). The risk factors of patients with apical HCM patients are shown in Table 2.
Conclusions
Appropriate ICD therapy was more prevalent in patients with apical HCM, compared to patients with other types of HCM. Aggressive intervention such as catheter ablation for ventricular tachycardia and ventricular fibrillation may be considered in patients with apical HCM and higher score of 5-year risk of SCD. Further studies are needed to clarify the manifestations and long-term outcome of apical HCM patients.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Nakano
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - Y Kondo
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - M Nakano
- Chiba University Graduate School of Medicine, Department of Advanced Cardiorhythm Therapeutics , Chiba , Japan
| | - T Kajiyama
- Chiba University Graduate School of Medicine, Department of Advanced Cardiorhythm Therapeutics , Chiba , Japan
| | - R Ito
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - M Kitagawa
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - M Sugawara
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - T Chiba
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - S Ryuzaki
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - Y Yoshino
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
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18
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Sugawara M, Kondo Y, Yoshino Y, Ryuzaki S, Chiba T, Kitagawa M, Ito R, Nakano MI, Kajiyama T, Nakano MA, Kobayashi Y. Long-term clinical course and prognostic factors of heart failure with reduced ejection fraction (HFrEF) patients underwent primary prophylactic implantable cardioverter defibrillator (ICD). Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.380] [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
For decades, ICD is a well-established therapy for improving prognosis of structural heart disease with severe cardiac dysfunction, and ICD for primary prophylaxis against sudden cardiac death were routinely provided. However, long-term prognosis and clinical course are different in each individual patient with an ICD, and it is moreover unclear what kind of factors might have influences on their clinical outcomes.
Purpose
The aim of this study is to clarify long-term prognosis and predictors of future major adverse cardiac events (MACEs) in HFrEF patients with an ICD as primary prophylaxis in Japanese population.
Methods
We retrospectively analyzed our ICD database. Patients underwent primary prophylactic ICD implantation from 2006 to 2020 at our institute and met the criteria of ICD recommendation of the latest Japanese guideline. Its requirements are receiving optimal medication therapy, symptomatic heart failure (New York Heart Association classification II or greater), and severe cardiac dysfunction (left ventricular ejection fraction (LVEF) is 35% or less). Additionally, prior NSVT is considered Class I ICD recommendation. In the case of ischemic cardiomyopathy (ICM), ICD implantation was done at least 40 days after myocardial infarction and at least 90 days after revascularization. MACEs were defined as composite outcome of cardiovascular death, heart failure hospitalization, and appropriate ICD therapies.
Results
A total of 148 consecutive patients were enrolled (male, 120 (81%); age, 62.1±11.8 years; LVEF, 23.0±5.86%; left ventricular end-diastolic diameter (LVDd), 67.6±9.26mm; paroxysmal or persistent atrial fibrillation (AF), 38 (26%); NSVT, 113 (76%); use of class III antiarrhythmic drugs, 48 (32%); ICM, 49 (33%); cardiac resynchronization therapy (CRT), 63 (43%)). One hundred twenty patients (81%) were programmed with a shock-only zone over 200 beats per minute. The median follow-up duration was 58.5 months. Among those 148 patients, MACEs were occurred to 60 patients (41%). As a result of dividing all patients into two groups by the occurrence of MACE, LVEF and LVDd were worse in MACE(+) group, whereas, MACE(−) had greater number of co morbidities. The results of cox-regression analysis showed LVDd (HR: 1.07, 95% CI: 1.03–1.12, p<0.001), AF (HR: 2.88, 95% CI: 1.56–5.31, p<0.001) and ICM (HR: 1.78, 95% CI: 1.00–3.16, p=0.049) were the independent predictors of MACEs (Table). However, initial ICD programming was not related to the occurrence of MACE.
Conclusions
The incidence of MACEs in patients with an ICD and severe HFrEF was substantially high in this Japanese population. Etiology of ICM, left ventricle size, and AF were the potential risk factors for future MACEs.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Sugawara
- Chiba University Hospital , Chiba , Japan
| | - Y Kondo
- Chiba University Hospital , Chiba , Japan
| | - Y Yoshino
- Chiba University Hospital , Chiba , Japan
| | - S Ryuzaki
- Chiba University Hospital , Chiba , Japan
| | - T Chiba
- Chiba University Hospital , Chiba , Japan
| | - M Kitagawa
- Chiba University Hospital , Chiba , Japan
| | - R Ito
- Chiba University Hospital , Chiba , Japan
| | - M I Nakano
- Chiba University Hospital , Chiba , Japan
| | - T Kajiyama
- Chiba University Hospital , Chiba , Japan
| | - M A Nakano
- Chiba University Hospital , Chiba , Japan
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19
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Ono R, Miyauchi H, Iimori T, Hoshi K, Ohyama M, Hirano K, Kobayashi Y. Clinical findings of triglyceride deposit cardiomyovasculopathy. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1678] [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
Triglyceride (TG) deposit cardiomyovasculopathy (TGCV) is a novel cardiovascular disorder and was recently encoded as an orphan disease in Europe (ORPHA code: 565612). Defective intracellular lipolysis results in TG accumulation in the myocardium and coronary arteries in TGCV. The myocardial washout rate (WR) of iodine-123-β-methyl-p-iodophenylpentadecanoic acid (BMIPP) is an essential indicator to evaluate myocardial lipolysis in vivo, and decreased WR (<10%) of BMIPP is one of the essential items of diagnostic criteria for TGCV.
Purpose
To clarify clinical findings of TGCV including comorbid conditions and laboratory findings.
Methods
We enrolled 234 patients who underwent BMIPP scintigraphy between September 2015 and July 2019. The distributions of TGCV in each comorbidity, cardiac functions and laboratory findings were investigated.
Results
In total, 104 patients were diagnosed with definitive TGCV. The BMIPP WR of TGCV patients was −1.37±10.6%. TGCV patients had various comorbid conditions, including coronary artery disease (75%), diabetes mellitus (56%), and heart failure (21%). Left ventricular ejection fraction (LVEF) of TGCV patients was significantly lower than that of non-TGCV patients (38.1±18.0% vs. 43.6±18.9%, p-value=0.026). Moreover, among those who did not take lipid-lowering drugs, there was no difference in the serum TG level between TGCV and non-TGCV patients (TGCV: n=44, 127±84.6 mg/dL, non-TGCV: n=66, 133±70.7 mg/dL, p-value=0.73).
Conclusions
TGCV patients showed multiple coexistence of coronary artery disease, diabetes mellitus, or heart failure with lower LVEF. Serum TG level was not significantly different between TGCV and non-TGCV patients. Serum TG did not affect the intracellular TG accumulation in TGCV patients directly, and this result was consistent with the pathophysiological hypothesis that the TG accumulation in the myocardial cytoplasm is due to intracellular lipase dysfunction.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- R Ono
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - H Miyauchi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
| | - T Iimori
- Chiba University Hospital, Department of Radiology , Chiba , Japan
| | - K Hoshi
- Chiba University , Chiba , Japan
| | - M Ohyama
- Chiba University Hospital, Division of Laboratory Medicine , Chiba , Japan
| | - K Hirano
- Osaka University Graduate School of Medicine , Osaka , Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine , Chiba , Japan
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20
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Takenaka S, Sato T, Nagai T, Omote K, Kamiya K, Konishi T, Kobayashi Y, Tada A, Mizuguchi Y, Takahashi Y, Naito S, Saiin K, Ishizaka S, Wakasa S, Anzai T. Impact of right ventricular reserve on exercise capacity and quality of life in patients with left ventricular assist device. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1011] [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: 11/15/2022] Open
Abstract
Abstract
Background
Right heart failure following left ventricular assist device (LVAD) implantation is a major complication which significantly impairs functional capacity and quality of life (QoL). Right ventricular (RV) reserve function may limit exercise capacity and QoL in LVAD patients; however, most patients show normal RV haemodynamics at rest.
Purpose
The aim of this study was to investigate whether RV reserve assessed by the changes of RV function during exercise is correlated with exercise capacity and QoL in patients with LVAD.
Methods
We prospectively examined 20 consecutive LVAD patients who were admitted to our university hospital between June 2020 and November 2021 after excluding those who were unable to perform exercise (n=8). All patients underwent invasive exercise right heart catheterisation with simultaneous echocardiography in the supine position. RV stroke work index (RVSWI) was calculated as 0.0136 × stroke volume index × (mean pulmonary artery pressure [mPAP] − right atrial pressure [RAP]) at rest and during exercise. Exercise capacity and QoL were assessed by 6-minute walk distance (6MWD) and peak oxygen consumption (VO2) in cardiopulmonary exercise testing, and the EuroQol visual analogue scale (EQ-VAS), respectively. The patients were divided into two groups according to the median ΔRVSWI (RVSWI change from rest to peak exercise) of 1.45 (interquartile range [IQR] −0.31 to 8.25) g/m2.
Results
Patients were predominantly male (75%) and the median age was 47 (IQR 38–60) years. Patients with lower ΔRVSWI had significantly higher change on RAP (P=0.019), but significantly lower change on mPAP (P<0.001) compared to those with higher ΔRVSWI. There were no significant differences in age, gender, primary aetiology of heart failure, type of LVAD devices, or echocardiographic parameters including tricuspid annular plane systolic excursion, and RVSWI at rest between the groups. ΔRVSWI during exercise were positively correlated with 6MWD (R=0.69, P<0.01) and peak VO2 (R=0.66, P<0.01) (Figure A). In addition, ΔRVSWI during exercise were positively correlated with the EQ-VAS (R=0.48, P=0.031). On the other hand, there was no significant correlation between RVSWI at rest and 6MWD (R=−0.11, P=0.63) and peak VO2 (R=0.13, P=0.95), and the EQ-VAS (R=0.11, P=0.61). During a median follow-up period of 312 (IQR 176–369) days, adverse events occurred in 3 patients (15%), including 1 death and 2 hospitalisations for major bleeding and right heart failure. Kaplan-Meier analysis revealed that the adverse events more frequently occurred in patients with lower ΔRVSWI compared to those with higher ΔRVSWI (Figure B).
Conclusions
ΔRVSWI was positively correlated with 6MWD, peak VO2 and EQ-VAS irrespective of RV function at rest. Our findings suggest that the assessment of RV reserve function using ΔRVSWI would be useful for risk stratification in patients with LVAD.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Takenaka
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Sato
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Nagai
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Omote
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Kamiya
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Konishi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Kobayashi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - A Tada
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Mizuguchi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Takahashi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Naito
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Saiin
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Ishizaka
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Wakasa
- Hokkaido University, Cardiovascular and Thoracic Surgery, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
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21
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Ono R, Iwahana T, Kato H, Kobayashi Y. Steinberg sign and ectopia lentis: Marfan syndrome. QJM 2022; 115:617-618. [PMID: 35781828 DOI: 10.1093/qjmed/hcac156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Indexed: 11/14/2022] Open
Affiliation(s)
- R Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - T Iwahana
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - H Kato
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Y Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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22
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Kawamura A, Aoi W, Abe R, Kobayashi Y, Wada S, Kuwahata M, Higashi A. Corrigendum to 'Combined intake of astaxanthin, β-carotene, and resveratrol elevates protein synthesis during muscle hypertrophy in mice' Nutrition 69: 110561 (2020) 10.1016/j.nut.2019.110561 1-6. Nutrition 2022; 103-104:111812. [PMID: 36088187 DOI: 10.1016/j.nut.2022.111812] [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: 11/29/2022]
Affiliation(s)
- A Kawamura
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan; Sports Science Research Promotion Center, Nippon Sport Science University, Tokyo, Japan
| | - W Aoi
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan.
| | - R Abe
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan; Wakayama Medical University Hospital, Wakayama, Japan
| | - Y Kobayashi
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - S Wada
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - M Kuwahata
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - A Higashi
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
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23
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Nagumo Y, Kimura T, Ishikawa H, Sekino Y, Maruo K, Mathis B, Takemura M, Kageyama Y, Ushijima H, Kawai T, Yamashita H, Azuma H, Naiki T, Kobayashi Y, Inokuchi J, Osawa T, Kita Y, Tsuzuki T, Hashimoto K, Nishiyama H. 1740P Bladder preservation therapy in combination with atezolizumab and radiation therapy for invasive bladder cancer (BPT-ART): An open-label, single-arm, multicenter, phase II trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1818] [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: 11/01/2022] Open
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24
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Nakamura S, Kobayashi Y, Matsuura T. Grid-Based Estimation of Transformation Between Partial Relationships Using a Genetic Algorithm. JRM 2022. [DOI: 10.20965/jrm.2022.p0786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human motor learning is characterized by adaptation, wherein information obtained in the past is transferred to a different situation. In this study, we investigate a grid-based computation for explaining the reuse of the information of an existing controller for adaptation to a partial malfunction of a controller. To this end, a motor learning scheme is adopted based on the detection and estimation of partial relationships. The transformation between the partial relationships is estimated based on a grid-based estimation of the two coordinate systems. In this estimation, the coordinate systems are optimized using a genetic algorithm. Two arms in a reflection are considered, and it is confirmed that the transformation of the differential kinematics (Jacobian), as an example of the partial relationships, can be estimated by the proposed method.
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25
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Abbott R, Abe H, Acernese F, Ackley K, Adhikari N, Adhikari R, Adkins V, Adya V, Affeldt C, Agarwal D, Agathos M, Agatsuma K, Aggarwal N, Aguiar O, Aiello L, Ain A, Ajith P, Akutsu T, Albanesi S, Alfaidi R, Allocca A, Altin P, Amato A, Anand C, Anand S, Ananyeva A, Anderson S, Anderson W, Ando M, Andrade T, Andres N, Andrés-Carcasona M, Andrić T, Angelova S, Ansoldi S, Antelis J, Antier S, Apostolatos T, Appavuravther E, Appert S, Apple S, Arai K, Araya A, Araya M, Areeda J, Arène M, Aritomi N, Arnaud N, Arogeti M, Aronson S, Arun K, Asada H, Asali Y, Ashton G, Aso Y, Assiduo M, Melo SADS, Aston S, Astone P, Aubin F, AultONeal K, Austin C, Babak S, Badaracco F, Bader M, Badger C, Bae S, Bae Y, Baer A, Bagnasco S, Bai Y, Baird J, Bajpai R, Baka T, Ball M, Ballardin G, Ballmer S, Balsamo A, Baltus G, Banagiri S, Banerjee B, Bankar D, Barayoga J, Barbieri C, Barish B, Barker D, Barneo P, Barone F, Barr B, Barsotti L, Barsuglia M, Barta D, Bartlett J, Barton M, Bartos I, Basak S, Bassiri R, Basti A, Bawaj M, Bayley J, Mills J, Milotti E, Minenkov Y, Mio N, Mir L, Miravet-Tenés M, Mishkin A, Mishra C, Mishra T, Mistry T, Bazzan M, Mitra S, Mitrofanov V, Mitselmakher G, Mittleman R, Miyakawa O, Miyo K, Miyoki S, Mo G, Modafferi L, Moguel E, Becher B, Mogushi K, Mohapatra S, Mohite S, Molina I, Molina-Ruiz M, Mondin M, Montani M, Moore C, Moragues J, Moraru D, Bécsy B, Morawski F, More A, Moreno C, Moreno G, Mori Y, Morisaki S, Morisue N, Moriwaki Y, Mours B, Mow-Lowry C, Bedakihale V, Mozzon S, Muciaccia F, Mukherjee A, Mukherjee D, Mukherjee S, Mukherjee S, Mukherjee S, Mukund N, Mullavey A, Munch J, Beirnaert F, Muñiz E, Murray P, Musenich R, Muusse S, Nadji S, Nagano K, Nagar A, Nakamura K, Nakano H, Nakano M, Bejger M, Nakayama Y, Napolano V, Nardecchia I, Narikawa T, Narola H, Naticchioni L, Nayak B, Nayak R, Neil B, Neilson J, Belahcene I, Nelson A, Nelson T, Nery M, Neubauer P, Neunzert A, Ng K, Ng S, Nguyen C, Nguyen P, Nguyen T, Benedetto V, Quynh LN, Ni J, Ni 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I, Martin R, Martinez M, Martinez V, Martinez V, Martinovic K, Martynov D, Marx E, Masalehdan H, Mason K, Massera E, Masserot A, Masso-Reid M, Mastrogiovanni S, Matas A, Mateu-Lucena M, Matichard F, Matiushechkina M, Mavalvala N, McCann J, McCarthy R, McClelland D, McClincy P, McCormick S, McCuller L, McGhee G, McGuire S, McIsaac C, McIver J, McRae T, McWilliams S, Meacher D, Mehmet M, Mehta A, Meijer Q, Melatos A, Melchor D, Mendell G, Menendez-Vazquez A, Menoni C, Mercer R, Mereni L, Merfeld K, Merilh E, Merritt J, Merzougui M, Meshkov S, Messenger C, Messick C, Meyers P, Meylahn F, Mhaske A, Miani A, Miao H, Michaloliakos I, Michel C, Michimura Y, Middleton H, Mihaylov D, Milano L, Miller A, Miller A, Miller B, Millhouse M. Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.042003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ono R, Hirose M, Kobayashi Y. Mulberry body in a patient with Fabry disease. QJM 2022; 115:473. [PMID: 35567526 DOI: 10.1093/qjmed/hcac120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- R Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - M Hirose
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
| | - Y Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
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Morishita N, Miura M, Kobayashi Y, Matsunaga R, Maeda T, Ochi M, Horiuchi T. P-039 Male age is associated with sperm DNA integrity: Selection of high DNA integrity sperm by microfluidics sorting is critical to clinical outcomes in older patients. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does sperm DNA integrity affect clinical outcomes of ICSI?
Summary answer
Use of high DNA integrity sperm selected by microfluidics sperm sorting results in lower miscarriage rates in the patients of 39-years old and more.
What is known already
High sperm DNA damage is associated with decreased normal fertilization, embryo development and pregnancy rates, and an increased miscarriage rate. On the other hand, oocytes from older women have decreased pregnancy rate, and increased miscarriage rate because of possibility of low ability to repair sperm with DNA fragmentation, and dramatical increases of aneuploidy as women age. A microfluidic sperm selection chamber (MSS, ZyMōt™; DxNow) is a device designed to collect sperm with higher chromatin integrity than density gradient centrifugation (DGC).
Study design, size, duration
Sperm analysis was performed by sperm chromatin dispersion (SCD) test and comet assay in the same sample of 15 cases between October 2020 and February 2021. ICSI outcomes by DGC and MSS were compared with blastocyst development, and pregnancy rates in vitrified-thawed single blastocyst transfers cycle for 518 cases between August 2018 and May 2021.
Participants/materials, setting, methods
SCD test was optimized as a rapid procedure, with sperm showing a halo deemed normal, and those without a halo abnormal. Comet assay results were analyzed using CometScore 2.0, with comparison of %Tail DNA. ICSI outcomes were analyzed using multiple logistics regressions of male and female ages.
Main results and the role of chance
We found a positive correlation between male age and sperm DNA fragmentation rates in raw semen using SCD test (r = 0.70) and Comet assay (r = 0.42). Higher DNA integrity sperm could select using MSS than DGC. In this study with ICSI outcomes, 170 of 318 (53.5%) blastocyst transfers resulted in pregnancy, and 49 (28.8%) subsequently miscarried. The data were classified according to less than or more than 39 years old of male age detected by multiple logistics regressions. In patients with ≥39 years of male age, the female age was significantly higher and blastocyst and pregnancy rates were significantly lower, and the miscarriage rate was significantly higher than <39 years of male age. Since sperm DNA fragmentation increased in accordance with male age, we compared MSS and DGC in the patients with male age ≥39 years. There was no significant difference in blastocyst, pregnancy, and miscarriage rates in female age <39 years. While in ≥ 39 years of female age, blastocyst and pregnancy rates in MSS were not significantly different from DGC, but the miscarriage rate in MSS was significantly lower than in DGC (27.3 vs. 57.1%).
Limitations, reasons for caution
The sample size for each study was small. Analysis of sperm DNA fragmentation and samples in ICSI outcomes were not the same. The retrospective nature of ICSI outcomes in this study does not allow controlling of unknown confounders.
Wider implications of the findings
Sperm DNA fragmentation depended on male age affected fertility outcomes. However, when male age is higher, masking the effect of male age by female age. In this study, we found out the improvement of ICSI outcome by using high DNA integrity sperm selected by MSS in both ≥39 years.
Trial registration number
Not applicable
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Affiliation(s)
- N Morishita
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
| | - M Miura
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
| | - Y Kobayashi
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
| | - R Matsunaga
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
| | - T Maeda
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
| | - M Ochi
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
| | - T Horiuchi
- Ochi Yume Clinic Nagoya, IVF laboratory , Nagoya, Japan
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Yanagisawa-Sugita A, Iba A, Maeda E, Jwa SC, Saito K, Kuwahara A, Saito H, Terada Y, Ishihara O, Kobayashi Y. O-080 Impact of age-limit policy change for assisted reproductive technology (ART) subsidy in Japan. Hum Reprod 2022. [DOI: 10.1093/humrep/deac104.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
What was the impact on treatment age in Japan after a subsidy policy change that set age limits for assisted reproductive technology (ART) treatment?
Summary answer
The national policy introducing age limits in the subsidy may have promoted ART treatment among younger women.
What is known already
Japan has provided partial subsidies for ART treatment since 2004. To promote treatment at a younger age, the government introduced a subsidy policy in 2016 that set age limits: up to six treatment cycles for women younger than 40 years of age; and up to three cycles for women between 40 and 42 years old. However, two out of 47 prefectures continued to provide subsidies to women aged 43 and older.
Study design, size, duration
We conducted a time series analysis of the utilisation of ART before and after the introduction of age limits, using data from the Japanese national ART registry from 2012 to 2016.
Participants/materials, setting, methods
We described the number of fresh and frozen treatment cycles, comparing the number between 45 prefectures that followed the national policy change (hereafter, prefectures with age limits) and two prefectures that did not (hereafter, prefectures without age limits). Ordinary least squares regression models were used to assess the impact of the policy change by prefecture on the number of ART cycles by women of different ages.
Main results and the role of chance
The overall number of fresh and frozen ART cycles continuously increased in all age groups from 2012 to 2016. Meanwhile, the number of fresh ART cycles among women aged ≤ 36 and 37-39 years in 2016 increased from the previous year by + 4.0% and +1.8% in prefectures with age limits, whereas it decreased in prefectures without age limits: -3.1% and -2.3%, respectively. The number of fresh ART cycles among women aged 40-42 and 43-45 years in prefectures with age limits in 2016 changed by + 1.5% and -0.1%, respectively, whereas it increased considerably in prefectures without age limits by + 9.6% and +65.4%, respectively. Similar changes were shown for the frozen cycles. After controlling for underlying time trends and prefectural characteristics, the policy change significantly increased the number of fresh and frozen ART treatment cycles among women aged ≤ 36 years and decreased the treatment cycles of women aged 40-42 years.
Limitations, reasons for caution
We evaluated the change observed in the year of the policy change and could not assess longer-term trends. Additionally, unobserved factors might have contributed to the change in treatment numbers.
Wider implications of the findings
The introduction of a policy to set an age limit for the partial ART subsidy resulted in a significant increase in treatment even among age groups younger than the boundary groups. The policy change might have conveyed educational messages regarding the benefits of early treatment.
Trial registration number
not applicable
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Affiliation(s)
| | - A Iba
- The University of Tokyo, Public Health, Tokyo , Japan
| | - E Maeda
- Akita University Graduate School of Medicine, Environmental Health Science and Public Health, Akita , Japan
| | - S C Jwa
- Saitama Medical University, Obstetrics and Gynecology, Saitama , Japan
| | - K Saito
- Tokyo Medical and Dental University, Comprehensive Reproductive Medicine, Tokyo , Japan
| | - A Kuwahara
- Tokushima University, Obstetrics and Gynecology, Tokushima , Japan
| | - H Saito
- Umegaoka Women's Clinic, ART center, Tokyo , Japan
| | - Y Terada
- Akita University Graduate School of Medicine, Obstetrics and Gynecology, Akita , Japan
| | - O Ishihara
- Saitama Medical University, Obstetrics and Gynecology, Saitama , Japan
| | - Y Kobayashi
- The University of Tokyo, Public Health, Tokyo , Japan
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Harada K, Yamamura T, Muto O, Nakamura M, Sogabe S, Sawada K, Nakano S, Yagisawa M, Muranaka T, Dazai M, Tateyama M, Ito K, Saito R, Kobayashi Y, Kato S, Miyagishima T, Kawamoto Y, Yuki S, Sakata Y, Sakamoto N, Komatsu Y. SO-30 Impact of single-heterozygous UGT1A1 on the clinical outcomes of nano-liposomal irinotecan plus 5-fluorouracil/leucovorin for patients with pancreatic ductal adenocarcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.429] [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: 11/28/2022] Open
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30
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Ogawa N, Katagiri K, Haimoto Y, Kobayashi Y. Total synthesis of resolvin D3. Org Biomol Chem 2022; 20:4338-4341. [PMID: 35551327 DOI: 10.1039/d2ob00750a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Resolvin D3 was synthesized by the Suzuki-Miyaura cross-coupling reaction of C1-C8 borane with C9-C22 iodoolefin as the key reaction. The latter intermediate was obtained by the sequential Wittig reactions of C9-C13 phosphonium salt with C14-C19 aldehyde and then C9-C19 aldehyde with propyltriphenylphosphonium bromide. The stereogenic centers at C4, C11, and C17 were constructed by the ruthenium-catalyzed asymmetric transfer hydrogenation with high stereoselectivity.
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Affiliation(s)
- Narihito Ogawa
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.
| | - Kyosuke Katagiri
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.
| | - Yosuke Haimoto
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.
| | - Yuichi Kobayashi
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
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Chiba T, Kajiyama T, Yutaka Y, Ryuzaki S, Sugawara M, Kitagawa M, Ito R, Nakano M, Nakano M, Kondo Y, Kobayashi Y. Association between right ventricular dysfunction and appropriate icd therapy. Europace 2022. [DOI: 10.1093/europace/euac053.460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Right ventricular fractional area change (RVFAC) as right ventricular function is recently referred as an independent predictor of sudden cardiac death (SCD). The purpose of this study was to evaluate the association of RVFAC and appropriate ICD therapy in order to determine the cut-off value of RVFAC.
Methods
Consecutive patients who underwent initial ICD implantation for any diseases except for non-dilated phase hypertrophic cardiomyopathy and channelopathy were retrospectively enrolled from 2012 to 2018. Primary endpoint was an initial appropriate ICD therapy. Transthoracic echocardiographic parameters before ICD implantation were evaluated by one physician and one echocardiologist to be validated. Right ventricular dimensions and function were also measured to be analyzed.
Results
In total, 172 patients (60.3±13.6 years, 131 males) including 63 ischemic cardiomyopathy were enrolled. Ninety patients received an ICD as a secondary prophylaxis. Mean LVEF and RVFAC were 38.3±14.3% and 35.8±8.82%, respectively. There was little correlation between RVFAC and LVEF (correlation coefficient =0.274). Regarding appropriate ICD therapy events, the best cut-off value of RVFAC was 34.8%. The odds ratio of low RVFAC was 2.731 (95%CI: 1.456-5.121, P=0.00174). Secondary prophylactic cohort with low RVFAC showed highest incidence of appropriate ICD therapy as shown in the figure. In multivariate analysis, only low RVFAC is an independent predictor of appropriate ICD therapy (HR: 3.53, 95%CI:1.78- 6.99, P=0.0003).
Conclusion
Low RVFAC seemed independently associated with increased appropriate ICD therapy.
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Affiliation(s)
- T Chiba
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - T Kajiyama
- Chiba University Graduate School of Medicine, Department of of Advanced Cardiorhythm Therapeutics, Chiba, Japan
| | - Y Yutaka
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - S Ryuzaki
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - M Sugawara
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - M Kitagawa
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - R Ito
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - M Nakano
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - M Nakano
- Chiba University Graduate School of Medicine, Department of of Advanced Cardiorhythm Therapeutics, Chiba, Japan
| | - Y Kondo
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Sugawara M, Kondo Y, Ryuzaki S, Yoshino Y, Chiba T, Kitagawa M, Ito R, Nakano MI, Kajiyama T, Nakano MA, Kobayashi Y. Negative prognostic implications of non-sustained ventricular tachycardias in patients after prophylactic defibrillator implantation. Europace 2022. [DOI: 10.1093/europace/euac053.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Non-sustained ventricular tachycardia (NSVT) is frequent phenomenon in severe heart failure with reduced ejection fraction (HFrEF) patients, and causes any negative impacts on such patients. In the Japanese Circulation Society (JCS) and Japanese Heart Rhythm Society (JHRS) guidelines, NSVT is regarded as a major component of indication for implantable cardioverter defibrillator (ICD) implantation. However, the long-term prognostic significance of NSVT in severe HFrEF is incompletely resolved.
Purpose
The aim of this study is to investigate the relation between prior NSVT episodes and major adverse cardiac events (MACEs) in HFrEF patients with an ICD as primary prophylaxis.
Methods
We retrospectively analyzed our ICD database. Patients underwent primary prophylactic ICD implantation from 2007 to 2018 following ICD recommendation of JCS and JHRS guidelines. Patients met the criteria of receiving optimal medication therapy, symptomatic heart failure (New York Heart Association classification II or greater), and severe cardiac dysfunction (left ventricular ejection fraction (LVEF) is 35% or less). In the case of ischemic cardiomyopathy (ICM), implantation of ICD was done at least 40 days after myocardial infarction and at least 90 days after revascularization. Incidence of NSVT episodes were identified through daily electrocardiogram (ECG), Holter ECG or monitor ECG in the hospital. MACEs were defined as composite outcome of cardiovascular death, heart failure hospitalization, and appropriate ICD therapies.
Results
A total of 148 consecutive patients were enrolled (male, 120 (81%); age, 62.1±11.8 years; LVEF, 23.0±5.86%; left ventricular end-diastolic diameter (LVDd), 67.6±9.26mm; paroxysmal or persistent atrial fibrillation (AF), 38 (26%); NSVT, 113 (76%); use of class III antiarrhythmic drugs, 48 (32%); ICM, 49 (33%); cardiac resynchronization therapy (CRT), 63 (43%)). The median follow-up duration was 58.5 months. As a result of comparison of the Kaplan-Meier curve between NSVT group (n=113) and non-NSVT group (n=35), cardiovascular death, heart failure hospitalization, and appropriate ICD therapy were not statistically different (Figures). Of those, MACEs were occurred to 60 patients (41%). The results of cox-regression analysis showed LVDd (HR: 1.07, 95% CI: 1.03-1.12, p<0.001), AF (HR: 2.88, 95% CI: 1.56-5.31, p<0.001) and ICM (HR: 1.78, 95% CI: 1.00-3.16, p=0.049) were the independent predictors of MACEs, however NSVT was not (Table).
Conclusions
In this Japanese population, the long-term prognosis of severe HFrEF patients is considered to be comparable regardless of prior NSVT episodes. However, the incidence of MACEs in patients with severe HFrEF after ICD implantation was substantially high. ICM, left ventricle size, and atrial fibrillation were the potential risk factors for MACEs as the previous reports showed.
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Affiliation(s)
| | - Y Kondo
- Chiba University Hospital, Chiba, Japan
| | - S Ryuzaki
- Chiba University Hospital, Chiba, Japan
| | - Y Yoshino
- Chiba University Hospital, Chiba, Japan
| | - T Chiba
- Chiba University Hospital, Chiba, Japan
| | | | - R Ito
- Chiba University Hospital, Chiba, Japan
| | - MI Nakano
- Chiba University Hospital, Chiba, Japan
| | | | - MA Nakano
- Chiba University Hospital, Chiba, Japan
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33
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Ono R, Iwahana T, Kato H, Kobayashi Y. Dual P-waves in a patient after heart transplantation. QJM 2022; 115:318. [PMID: 35380729 DOI: 10.1093/qjmed/hcac092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - T Iwahana
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - H Kato
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Y Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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Affiliation(s)
- S Hanai
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - Y Kobayashi
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - R Ito
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - Y Maejima
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - D Nakagomi
- Department of Rheumatology, University of Yamanashi Hospital, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
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Hirade T, Michishio K, Kobayashi Y, Oshima N. Temperature dependence of positron annihilation lifetime in near-surface and bulk of room-temperature ionic liquid observed by a slow positron beam. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139507] [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: 11/03/2022]
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36
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Koutsogiannaki S, Okuno T, Kobayashi Y, Ogawa N, Yuki K. Isoflurane attenuates sepsis-associated lung injury. Biochem Biophys Res Commun 2022; 599:127-133. [PMID: 35180472 PMCID: PMC8892593 DOI: 10.1016/j.bbrc.2022.02.028] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 11/30/2022]
Abstract
Acute lung injury is one of major complications associated with sepsis, responsible for morbidity and mortality. Patients who suffer from acute lung injury often require respiratory support under sedations, and it would be important to know the role of sedatives in lung injury. We examined volatile anesthetic isoflurane, which is commonly used in surgical setting, but also used as an alternative sedative in intensive care settings in European countries and Canada. We found that isoflurane exposure attenuated neutrophil recruitment to the lungs in mice suffering from experimental polymicrobial abdominal sepsis. We found that isoflurane attenuated one of major neutrophil chemoattractants LTB4 mediated response via its receptor BLT1 in neutrophils. Furthermore, we have shown that isoflurane directly bound to BLT1 by a competition assay using newly developed labeled BLT1 antagonist, suggesting that isoflurane would be a BLT1 antagonist.
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Affiliation(s)
- Sophia Koutsogiannaki
- Department of Anaesthesia and Immunology, Harvard Medical School, USA; Department of Anesthesiology, Critical Care and Pain Medicine, Cardiac Anesthesia Division, Boston Children's Hospital, USA
| | - Toshiaki Okuno
- Department of Biochemistry, Juntendo University Faculty of Medicine, Japan
| | - Yuichi Kobayashi
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, Japan
| | - Narihito Ogawa
- Department of Applied Chemistry, Meiji University, Japan
| | - Koichi Yuki
- Department of Anaesthesia and Immunology, Harvard Medical School, USA; Department of Anesthesiology, Critical Care and Pain Medicine, Cardiac Anesthesia Division, Boston Children's Hospital, USA.
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37
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Tayama M, Inose T, Yamauchi N, Nakashima K, Tokunaga M, Kato C, Gonda K, Kobayashi Y. Fabrication of gold-immobilized quantum dots/silica core–shell nanoparticles and their multimodal imaging properties. Particulate Science and Technology 2022. [DOI: 10.1080/02726351.2021.1934918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- M. Tayama
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - T. Inose
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - N. Yamauchi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - K. Nakashima
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - M. Tokunaga
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - C. Kato
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - K. Gonda
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Japan
- International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Sendai, Japan
| | - Y. Kobayashi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
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38
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Saito K, Saito Y, Muramatsu T, Kitahara H, Fujimoto Y, Isono S, Kobayashi Y. Impact of perioperative interruption of antithrombotic therapy on thrombotic and bleeding events in non-cardiac surgery. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.159] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Antithrombotic therapy including antiplatelet agents and anticoagulants are prescribed for secondary prevention in patients with established cardiovascular disease. Although antithrombotic therapy is often interrupted before non-cardiac surgery with or without perioperative bridging anticoagulation, the impact on thrombotic and bleeding events remains uncertain.
Purpose
The aim of this study was to clarify the impact of perioperative interruption of anticoagulants on thrombotic and bleeding events in patients with established CVD undergoing elective non-cardiac surgery.
Methods
A total of 330 patients chronically treated with antithrombotic therapy for secondary prevention underwent elective non-cardiac surgery under general anesthesia, with the complete interruption of antithrombotic agents. The study endpoints included all-cause death, thrombotic events, and major bleeding complications after surgical procedures.
Results
Of 330 patients, 171 (51.8%) and 159 (48.2%) received antiplatelet agents and anticoagulants perioperatively. Atrial fibrillation (31.8%) and coronary artery disease (20.3%) were the major indications for antithrombotic regimens. Antithrombotic therapy was interrupted from 5 [2, 7] days before the surgery to 4 [2, 7] days postoperatively. Perioperative bridging therapy with unfractionated heparin was employed in 99 (30.0%) patients. During the hospitalization, 3 (0.9%) patients died due to non-cardiovascular causes. Thrombotic events and major bleeding occurred in 2 (0.6%) and 9 (2.7%) patients. Bridging therapy with heparin was non-significantly associated with an increased risk of bleeding events (5.1% vs. 1.7%, p = 0.09). In univariable and multivariable analyses, pre-operative hemoglobin level and operative duration were significantly associated with bleeding complications.
Conclusions
In the present study, complete interruption of antithrombotic therapy resulted in a few thrombotic events with a numerically higher rate of bleeding events in patients undergoing elective non-cardiac surgery. Pre-operative hemoglobin level and operative duration were significantly associated with post-operative bleeding complications.
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Affiliation(s)
- K Saito
- Chiba University Hospital, Chiba, Japan
| | - Y Saito
- Chiba University Hospital, Chiba, Japan
| | | | | | | | - S Isono
- Chiba University Hospital, Chiba, Japan
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Funabashi N, Kobayashi Y. J waves reaching to equal or more than 2 of 3 LV inferior wall leads may predict the presence of organized myocardial fibrotic or fat change in survivors of ventricular fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.037] [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
Funding Acknowledgements
Type of funding sources: None.
Background
The distribution of J waves and the presence of organized left ventricular (LV) myocardial damage may be related in survivors of ventricular fibrillation (VF).
Purpose
To predict the presence of organized myocardial damage such as fibrotic or fat change on cardiac computed tomography (CT) using the distribution of J waves in survivors of VF.
Methods
We conducted a retrospective analysis of 21 survivors of VF (17 males; mean age, 61 ± 14 years) that were implanted with a cardioverter defibrillator and underwent cardiac CT.
Results
On ECG, 4 patients had atrial fibrillation and 15 had J waves. On CT, 13 patients had organized LV myocardial fibrotic and/or fat change in myocardium. The mean corrected QT interval was 453 ± 30 and 429 ± 48 msec in patients with and without myocardial fibrotic and/or fat change, respectively (P = 0.182). The distribution of J waves was as follows: 5 had J waves in II, III and aVF leads (one had myocardial fibrotic and/or fat change) and 2 had J waves in III lead (one had myocardial fibrotic and/or fat change). One patient each had J waves in V1 lead; V1,2 leads; II, III, aVF and V1-3 leads; I, III, aVF and V1 leads; II, III, aVF, aVL and V1-6 leads; II, III, aVF and V4,5 leads; II, III, aVF and V2-5 leads; and III and aVF leads. The first one did not have myocardial fibrotic and/or fat change and the remaining 6 had myocardial fibrotic and/or fat change. If the J waves reached to ≥1 of 3 LV inferior wall leads (II, III, aVF leads) (N = 13), 10 (77%) had LV myocardial fibrotic and/or fat change. If not (N = 8), 3(38%) had LV myocardial fibrotic and/or fat change (P = 0.071). If the J waves reached ≥2 of 3 LV inferior wall leads (N = 11), 9 (82%) had LV myocardial fibrotic and/or fat change. If not (N = 10), 4 (40%) had LV myocardial fibrotic and/or fat change (P = 0.049). If the J waves reached all three LV inferior wall leads (N = 10), 8 (80%) had LV myocardial fibrotic and/or fat change. If not (N = 11), 5 (46%) had LV myocardial fibrotic and/or fat change (P = 0.104).
Conclusions
In survivors of VF, if the J waves reached ≥2 of 3LV inferior wall leads, the frequency of organized LV myocardial fibrotic and/or fat change was significantly higher than those without. Furthermore, the distribution of J waves and the presence of myocardial fibrotic and/or fat change on CT may predict VF. Abstract Figure. CT fibrosis in VF survivors with HCM
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Affiliation(s)
- N Funabashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Funabashi N, Okamoto M, Nakamura K, Sasaki T, Naito S, Kobayashi Y. Arrhythmogenic right ventricular cardiomyopathy patients with a markedly enlarged RV compressing LV to left side have an atypical distribution of epsilon waves and elevated plasma BNP. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.110] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Epsilon waves on V1-3 leads are specific ECG findings in patients with arrhythmogenic right ventricular (RV) cardiomyopathy (ARVC) suggesting RV conduction delay. Four dimensional (4D) cardiac CT visualizes ARVC characteristics, such as fibro-fatty invasion into RV and left ventricular (LV) myocardium (RVM, LVM), an enlarged RV, reduced RV motion, and bulging.
Purpose
We hypothesize that Epsilon waves in V4-6 leads suggest LV invasion in ARVC. Alternatively, extreme RV enlargement may compress the LV and cause clockwise rotation; an enlarged RV may itself cause epsilon waves in V4-6 leads.
Methods
Retrospective analysis of 17 patients (11 males, 57 ± 17 yrs) with suspected ARVC undergoing cardiac CT and ECG, 9 of whom met 2010 ARVC task force criteria.
Results
All 9 patients had epsilon waves on ECG; 5 had fibro-fatty invasion into the LVM. We divided the 9 into 5 groups by CT: 1) markedly enlarged RV compressing the LV to the left side with fibro-fatty changes exclusively in RVM (N = 1); 2) similar findings in both RVM and LVM (N = 2); 3) moderately enlarged RV without compression of the LV to the left side and fibro-fatty changes exclusively in RVM (N = 3); 4) the same in both RVM and LVM (N = 2); 5) severe mitral valve regurgitation, a markedly enlarged LV, and a fibro-fatty change in both RVM and LVM (N = 1). The patient in group (gp) 1 showed epsilon waves in V1-6 leads, patients in gp 2 had epsilon waves in V1-6 (N = 1), and V3-5 (N = 1) leads; patients in gp 3 had epsilon waves in V1-4 (N = 2), and V1-3 (N = 1) leads, patients in gp 4 had epsilon waves in V1-3 (N = 1), and V1, 2 (N = 1) leads; finally, the patient in gp 5 had epsilon waves in V4-6 leads. Plasma brain natriuretic peptide (BNP) levels were significantly greater in patients in gp 1 & 2 than gp 3 & 4 (1255 ± 838 vs 80 ± 52 pg/ml, P = 0.016).
Conclusions
ARVC patients with a markedly enlarged RV compressing the LV to the left side (gp 1,2) had a broad (V1-6) or different range (V3-5) distribution of epsilon waves and significantly elevated plasma BNP independent of fibro-fatty invasion of the LV, different from typical ARVC (gp 3,4). Additionally, structural change due to complicated heart disease, such as valvular disease (gp5), may also influence the distribution of epsilon waves in ARVC. Abstract Figure. CT and ECG in ARVC group 1
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Affiliation(s)
- N Funabashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - M Okamoto
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - K Nakamura
- Gunma Prefectural Cardiovascular Center, Department of Cardiology, Maebashi, Japan
| | - T Sasaki
- Gunma Prefectural Cardiovascular Center, Department of Cardiology, Maebashi, Japan
| | - S Naito
- Gunma Prefectural Cardiovascular Center, Department of Cardiology, Maebashi, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Funabashi N, Kobayashi Y. Clinical manifestation of coronary pulmonary arterial fistula diagnosed by cardiac computed tomography. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.114] [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: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Coronary pulmonary arterial fistula (CPAF) may cause enlargement of an aneurysm, which may rupture or compress other organs, or occurrence of steal phenomenon of coronary arterial (CA) blood flow. We hypothesize that there are various clinical characteristics of CPAF including patient age at diagnosis, method of diagnosis, observed symptoms, complications, and surgical interventions
Methods
From a total of >17,000 patients undergoing CT from 2000-2019 in our institute, 11 patients diagnosed as having CPAF were analyzed retrospectively. One was treated surgically prior to analysis, and the remaining 10 (3 males; 56 ± 12 years) were followed for a mean of 52 ± 64 months.
Results
5 were diagnosed as having CPAF through cardiac CT and 2 were diagnosed by invasive coronary angiograms. One was diagnosed by TTE and another patient was diagnosed by TTE and cardiac CT to differentiate from a mediastinal tumor. 4 had dyspnea, 2 had chest pain, and 1 had palpitation. 5 showed other cardiovascular disease (1 with left ventricular non-compaction, and persistent left superior vena cava; 1 with vascular type Ehlers-Danlos syndrome; 1 with hypertrophic cardiomyopathy; 1 with aortic valve regurgitation (AR); and 1 with vasospastic angina pectoris). The occurrence of steal phenomenon of CA blood flow was diagnosed in 4. CA aneurysm was observed in 5. 2 had abnormal flow from descending aorta to pulmonary arteries through CA. Pulmonary arterial systolic pressure >30 mmHg was observed in 2. During the observed periods, 4 underwent surgical procedure to eliminate CA aneurysm (N = 2), or for significant steal phenomenon of CA blood flow (N = 1). A patient with AR underwent CPAF elimination simultaneously with aortic valve replacement. The mean periods between initial diagnoses and surgical intervention was 27 ± 36 months. The remaining 6 were followed without surgical intervention for a mean of 69 ± 76 months without any cardiac events.
Conclusion
CPAF was diagnosed at a mean age of 56 years and half were diagnosed incidentally by cardiac CT. Five of the 11 patients (45%) underwent a surgical procedure. Patients with CPAF showed various symptoms due to complicating diseases, anatomical configurations, and outcomes. Abstract Figure. Typical CT images of CPAF
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Affiliation(s)
- N Funabashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Funabashi N, Kobayashi Y. Comparison of sites of wall thickening and abnormal late enhancement on cardiac CT and magnetic resonance imaging with electrocardiography findings in patients with confirmed cardiac amyloidosis. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Left ventricular (LV) wall thickening and diastolic dysfunction on a transthoracic echocardiogram (TTE) without a high voltage R wave on V5 leads on an ECG leads to a diagnosis of cardiac amyloidosis. A final diagnosis is made by endomyocardial biopsy. However, amyloid sometimes invades the right ventricle (RV), and left (LA) and right (RA) atria, causing ECG changes such as sick sinus syndrome (SSS), arrhythmia, and QRS wave axis deviation.
Purpose
To elucidate the relationship between sites of wall thickening and abnormal late enhancement (LE) on cardiac computed tomography (CT) and magnetic resonance imaging (MRI), suggesting amyloid invasion, with ECG findings in patients with cardiac amyloidosis confirmed by biopsy.
Methods
A total of 26 patients (11 females) with suspected cardiac amyloidosis, who had LV wall thickening by TTE without a high voltage R wave in V5 leads on ECG, underwent cardiac CT. LV wall thickening observed on CT in the early phase led to a late phase acquisition. Five patients (3 females, mean age 73 years) were diagnosed with cardiac amyloidosis: complicated multiple myeloma, 2; senile ATTR (transthyretin) amyloidosis, 1; immunoglobulin light chain (AL) amyloidosis, 1; and transthyretin mutation, 1. Four patients underwent cardiac MRI.
Results
Case 1 had wall thickening in the basal interventricular septum (IVS), LV inferior-posterior wall, LA on CT, abnormal LE in the endocardium in whole LV, RV, and RA on CT, and LE in the endocardium in whole LV, RV, LA, and IVS on MRI. ECG showed SSS (junctional rhythm), left axis QRS wave deviation, no low voltage R wave in limb leads, and a mild LA load. Case 2 had wall thickening in whole LV, RV, LA, and IVS on CT, and unclear (CT) or no (MRI) abnormal LE. ECG revealed SSS (junctional rhythm), a normal QRS axis, no low voltage R wave in limb leads, and no LA load. Case 3 had wall thickening in the LA and basal IVS on CT, abnormal LE in the LA and basal IVS on CT, and LE in the LA only on MRI. ECG revealed atrial tachycardia, a normal QRS axis with low voltage R wave in limb leads, and no LA load. Case 4 had wall thickening in the LA, an RV moderator band on CT, an unclear LE on CT, and LE in whole LV, endocardium in the RV, and whole IVS on MRI. ECG showed a normal sinus rhythm, left axis QRS wave deviation, with low voltage R wave in limb leads, and no LA load. Case 5 had wall thickening in the IVS, LV lateral wall, LV anterior wall, RA, RV outflow tract, and RA appendage, and no abnormal LE on CT (MRI not performed). ECG revealed a normal sinus rhythm, right axis QRS wave deviation, with low voltage R wave in limb leads, and a mild LA load.
Conclusions
In this pilot study of a small number of patients with cardiac amyloidosis, few relationships between sites of wall thickening and abnormal LE on ECG were found. However, a long-term follow-up study with more patients may reveal relationships between such parameters using this methodology. Abstract Figure. Classification by wall thickening on CT
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Affiliation(s)
- N Funabashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Kondo Y, Nakano M, Kajiyama T, Nakano M, Kobayashi Y. Learning curve of visually-guided laser balloon ablation of paroxysmal atrial fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.024] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
The visually-guided laser balloon (VGLB) is a compliant, variable-diameter balloon that delivers laser energy around the pulmonary vein (PV) ostium under real-time endoscopic visualization. However, limited data exist in Japan thus far. Therefore, we determined the safety, efficacy, and learning curve of the VGLB for PV isolation.
Methods
A total of 52 consecutive patients with paroxysmal atrial fibrillation were prospectively enrolled and divided into 3 groups (T1 = 15 patients, T2 = 15 patients, T3 = 22 patients). All patients underwent PV isolation by 2 operators using the VGLB. The operators were experienced in radiofrequency and cryothermal procedures, but not in laser ablations.
Results
Tables show the acute clinical results. Reversible phrenic nerve palsy occurred in 3.8%, with a trend towards a lower complication rate with increasing experience.
Conclusions
The VGLB was safe and effective for PV isolation, even for operators without any previous experience. Procedure time decreased after a learning curve of 30 cases. Abstract Figure. Procedural data and isolation rates
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Affiliation(s)
- Y Kondo
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - M Nakano
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - T Kajiyama
- Chiba University Graduate School of Medicine, Department of Advanced Cardiorhythm Therpeutics, Chiba, Japan
| | - M Nakano
- Chiba University Graduate School of Medicine, Department of Advanced Cardiorhythm Therpeutics, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Funabashi N, Nakamura K, Sasaki T, Naito S, Kobayashi Y. ECG education for first-grade medical students detecting Epsilon and J waves in patients with arrhythmogenic right ventricular cardiomyopathy in comparison with specialists for arrhythmia treatment. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Medical students find Epsilon and J wave diagnoses by electrocardiogram (ECG) in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) difficult.
Purpose
To evaluate the inter observer reliability for detecting Epsilon and J wave in patients with ARVC between medical students and specialists for arrhythmia treatment and seek the problem for the ECG education to the students.
Methods
Nine patients (six males, mean age 59 ± 17 years) meeting 2010 ARVC task-force criteria (Circulation. 2010; 121:1533-1541) underwent a retrospective ECG analysis. First-grade medical students undertook ECG studies for 9 months (4 h/week) by a cardiologist who was not a specialist in arrhythmia treatments according to the Japanese Heart Rhythm Society (JHRS). Medical students detected Epsilon and J waves in all nine ECGs. Two JHRS specialists in arrhythmia treatment independently detected Epsilon and J waves; when diagnoses differed, a final diagnosis was made together.
Results
Epsilon waves were detected in five and eight patients by medical students and specialists, respectively. The distribution of Epsilon waves was determined in inferior and right-side precordial leads by students, but in right-side precordial leads only by specialists (Table). J waves were detected in nine and three patients by medical students and specialists, respectively. The J wave distribution was wider for medical students than specialists.
Conclusions
With ECG findings by specialists as the gold standard, even with a substantial education, medical students tended to diagnose Epsilon waves or notches in QRS as J waves. Lecturers need to equip students with additional basic clinical knowledge, such as Epsilon waves are more frequent in right-side precordial leads in ARVC patients. Abstract Figure. CT and ECG in ARVC
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Affiliation(s)
- N Funabashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - K Nakamura
- Gunma Prefectural Cardiovascular Center, Department of Cardiology, Maebashi, Japan
| | - T Sasaki
- Gunma Prefectural Cardiovascular Center, Department of Cardiology, Maebashi, Japan
| | - S Naito
- Gunma Prefectural Cardiovascular Center, Department of Cardiology, Maebashi, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Watanabe T, Sadahira T, Edamura K, Kobayashi Y, Araki M. Evaluating renal tumors by SPARE can save the effort of making three-dimensional imaging. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)01065-x] [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: 11/04/2022]
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46
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Ono R, Iwahana T, Kato H, Kobayashi Y. Epsilon wave detection on Apple Watch electrocardiogram. QJM 2022; 115:52-53. [PMID: 34791468 DOI: 10.1093/qjmed/hcab289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan
| | - T Iwahana
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan
| | - H Kato
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan
| | - Y Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan
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Ogawa N, Uematsu C, Kobayashi Y. Stereoselective Synthesis of (–)-Heliannuol E by α-Selective Propargyl Substitution. Synlett 2021. [DOI: 10.1055/s-0040-1719844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThis paper describes a stereoselective synthesis of (–)-heliannuol E through intramolecular cyclization of a phenol mesylate. The introduction of the aromatic group was achieved by α-selective propargyl substitution of a propargylic phosphate.
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Affiliation(s)
| | | | - Yuichi Kobayashi
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University
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48
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Takashima Y, Isogawa Y, Tsuboi A, Ogawa N, Kobayashi Y. Synthesis of a TNF inhibitor, flurbiprofen and an i-Pr analogue in enantioenriched forms by copper-catalyzed propargylic substitution with Grignard reagents. Org Biomol Chem 2021; 19:9906-9909. [PMID: 34734958 DOI: 10.1039/d1ob01944a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The copper-catalyzed substitution reaction of diethyl phosphate derived from TMSCCCH(OH)CH2CH2OTBDPS with 3-c-C5H9-4-MeOC6H3MgBr, followed by several transformations, afforded a tumor necrosis factor inhibitor possessing a Ph-acetylene moiety. The inhibitor was also synthesized from phenylacetylene phosphate PhCCCH(OP(O)(OEt)2)CH2CH2OTBDPS. Furthermore, the substitution of phosphates derived from TMSCCCH(OH)CH3 and TMSCCCH(OH)-i-Pr with 3-F-4-PhC6H3MgBr gave the corresponding substitution products, which were transformed to flurbiprofen and its i-Pr analogue, respectively. The copper-catalyzed substitutions in these syntheses proceeded in a regio- and stereoselective manner.
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Affiliation(s)
- Yuji Takashima
- Department of Biomolecular Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan
| | - Yukari Isogawa
- Department of Biomolecular Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan
| | - Atsuki Tsuboi
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Narihito Ogawa
- Department of Applied Chemistry, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Yuichi Kobayashi
- Department of Biomolecular Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan.,Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.
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Abstract
AbstractA total synthesis of resolvin T4 was achieved by connecting three intermediates by Wittig reactions. The enal in the C1–C10 part was constructed through reduction of a propargylic alcohol with Red-Al followed by oxidation. The enal moiety in the C11–C16 part was synthesized by a ring-opening reaction of a silyl epoxide followed by a Peterson elimination. The chiral centers at C7 and C13 were constructed by ruthenium-catalyzed asymmetric transfer hydrogenation.
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Affiliation(s)
| | - Kohei Arai
- Department of Applied Chemistry, Meiji University
| | - Yuichi Kobayashi
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University
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Ono R, Kajiyama T, Takaoka H, Kobayashi Y. Austrian syndrome associated with mitral paravalvular pneumococcal abscess. QJM 2021; 114:529-530. [PMID: 33769546 DOI: 10.1093/qjmed/hcab064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba 260-8670, Japan
| | - T Kajiyama
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba 260-8670, Japan
| | - H Takaoka
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba 260-8670, Japan
| | - Y Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba 260-8670, Japan
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