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Fujihira H, Sato K, Nishiuchi Y, Murase T, Matsuda Y, Yoshida Y, Kamei T, Suzuki T. ELISA-based highly sensitive assay system for the detection of endogenous NGLY1 activity. Biochem Biophys Res Commun 2024; 710:149826. [PMID: 38581946 DOI: 10.1016/j.bbrc.2024.149826] [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: 03/06/2024] [Revised: 03/21/2024] [Accepted: 03/24/2024] [Indexed: 04/08/2024]
Abstract
Cytosolic peptide:N-glycanase (NGLY1, PNGase) is an enzyme that cleaves N-glycans from misfolded glycoproteins. In 2012, a human genetic disorder, NGLY1 deficiency, was first reported to be caused by mutations of the NGLY1 gene. Since then, there has been rapid progresses on NGLY1 biology, and gene therapy has been proposed as a promising therapeutic option for NGLY1 deficiency. While a plasma/urine biomarker has also been developed for this disease, detection of NGLY1 activity could be another viable option for early diagnosis of NGLY1 deficiency. Thus far, several in vitro and in cellulo NGLY1 assays have been reported, but those assay systems have several issues that must be addressed in order to develop an assay system compatible for routine clinical examination. Here, we show a facile, highly sensitive in vitro assay system that could be used to detect NGLY1 activity by utilizing its sequence editing function, i.e. conversion of glycosylated Asn into Asp, followed by a detection of newly generated epitope (HA)-tag by anti-HA antibody. Using this ELISA-based assay, we detected endogenous NGLY1 activity in as little as 2 μg of crude extract, which is the equivalent of 5 × 103 cells. Our system also detects NGLY1 activity from cells with compromised NGLY1 activity, such as iPS cells from patient samples. This assay system could be applied in future clinical examinations to achieve an early diagnosis of NGLY1 deficiency.
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Affiliation(s)
- Haruhiko Fujihira
- Glycometabolic Biochemistry Laboratory, Cluster for Pioneering Research, RIKEN, Saitama, 351-0198, Japan; Division of Glycobiologics, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Keiko Sato
- Glycometabolic Biochemistry Laboratory, Cluster for Pioneering Research, RIKEN, Saitama, 351-0198, Japan
| | | | | | | | - Yukiko Yoshida
- Laboratory of Protein Metabolism, Tokyo Metropolitan Institute of Medical Science, Tokyo, 156-8506, Japan
| | - Takayuki Kamei
- Global Advanced Platform, Takeda Pharmaceutical Co. Ltd., Kanagawa, 251-8555, Japan; NGLY1 Deficiency Project, T-CiRA Joint Program, Kanagawa, 251-8555, Japan
| | - Tadashi Suzuki
- Glycometabolic Biochemistry Laboratory, Cluster for Pioneering Research, RIKEN, Saitama, 351-0198, Japan; NGLY1 Deficiency Project, T-CiRA Joint Program, Kanagawa, 251-8555, Japan.
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2
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Hirayama H, Tachida Y, Fujinawa R, Matsuda Y, Murase T, Nishiuchi Y, Suzuki T. Development of a fluorescence and quencher-based FRET assay for detection of endogenous peptide:N-glycanase/NGLY1 activity. J Biol Chem 2024; 300:107121. [PMID: 38417795 DOI: 10.1016/j.jbc.2024.107121] [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: 12/19/2023] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 03/01/2024] Open
Abstract
Cytosolic peptide:N-glycanase (PNGase/NGLY1 in mammals) catalyzes deglycosylation of N-glycans on glycoproteins. A genetic disorder caused by mutations in the NGLY1 gene leads to NGLY1 deficiency with symptoms including motor deficits and neurological problems. Effective therapies have not been established, though, a recent study used the administration of an adeno-associated viral vector expressing human NGLY1 to dramatically rescue motor functions in young Ngly1-/- rats. Thus, early therapeutic intervention may improve symptoms arising from central nervous system dysfunction, and assay methods for measuring NGLY1 activity in biological samples are critical for early diagnostics. In this study, we established an assay system for plate-based detection of endogenous NGLY1 activity using a FRET-based probe. Using this method, we revealed significant changes in NGLY1 activity in rat brains during aging. This novel assay offers reliable disease diagnostics and provides valuable insights into the regulation of PNGase/NGLY1 activity in diverse organisms under different stress conditions.
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Affiliation(s)
- Hiroto Hirayama
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), Riken, Wako Saitama, Japan; Takeda-CiRA Joint Program (T-CiRA), Fujisawa, Kanagawa, Japan
| | - Yuriko Tachida
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), Riken, Wako Saitama, Japan; Takeda-CiRA Joint Program (T-CiRA), Fujisawa, Kanagawa, Japan
| | - Reiko Fujinawa
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), Riken, Wako Saitama, Japan; Takeda-CiRA Joint Program (T-CiRA), Fujisawa, Kanagawa, Japan
| | | | | | | | - Tadashi Suzuki
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), Riken, Wako Saitama, Japan; Takeda-CiRA Joint Program (T-CiRA), Fujisawa, Kanagawa, Japan.
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3
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Wiesinger M, Stuhlmann F, Bohman M, Micke P, Will C, Yildiz H, Abbass F, Arndt BP, Devlin JA, Erlewein S, Fleck M, Jäger JI, Latacz BM, Schweitzer D, Umbrazunas G, Wursten E, Blaum K, Matsuda Y, Mooser A, Quint W, Soter A, Walz J, Smorra C, Ulmer S. Trap-integrated fluorescence detection with silicon photomultipliers for sympathetic laser cooling in a cryogenic Penning trap. Rev Sci Instrum 2023; 94:123202. [PMID: 38109470 DOI: 10.1063/5.0170629] [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: 08/03/2023] [Accepted: 11/23/2023] [Indexed: 12/20/2023]
Abstract
We present a fluorescence-detection system for laser-cooled 9Be+ ions based on silicon photomultipliers (SiPMs) operated at 4 K and integrated into our cryogenic 1.9 T multi-Penning-trap system. Our approach enables fluorescence detection in a hermetically sealed cryogenic Penning-trap chamber with limited optical access, where state-of-the-art detection using a telescope and photomultipliers at room temperature would be extremely difficult. We characterize the properties of the SiPM in a cryocooler at 4 K, where we measure a dark count rate below 1 s-1 and a detection efficiency of 2.5(3)%. We further discuss the design of our cryogenic fluorescence-detection trap and analyze the performance of our detection system by fluorescence spectroscopy of 9Be+ ion clouds during several runs of our sympathetic laser-cooling experiment.
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Affiliation(s)
- M Wiesinger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - F Stuhlmann
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - M Bohman
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - P Micke
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
| | - C Will
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - H Yildiz
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - B P Arndt
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J A Devlin
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Erlewein
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Fleck
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - J I Jäger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B M Latacz
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Schweitzer
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - G Umbrazunas
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Eidgenössische Technische Hochschule Zürich, John-von-Neumann-Weg 9, 8093 Zürich, Switzerland
| | - E Wursten
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - W Quint
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - A Soter
- Eidgenössische Technische Hochschule Zürich, John-von-Neumann-Weg 9, 8093 Zürich, Switzerland
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
- Helmholtz-Institut Mainz, Staudingerweg 18, 55128 Mainz, Germany
| | - C Smorra
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ulmer
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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4
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Smorra C, Abbass F, Schweitzer D, Bohman M, Devine JD, Dutheil Y, Hobl A, Arndt B, Bauer BB, Devlin JA, Erlewein S, Fleck M, Jäger JI, Latacz BM, Micke P, Schiffelholz M, Umbrazunas G, Wiesinger M, Will C, Wursten E, Yildiz H, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Quint W, Soter A, Walz J, Yamazaki Y, Ulmer S. BASE-STEP: A transportable antiproton reservoir for fundamental interaction studies. Rev Sci Instrum 2023; 94:113201. [PMID: 37972020 DOI: 10.1063/5.0155492] [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: 04/20/2023] [Accepted: 10/09/2023] [Indexed: 11/19/2023]
Abstract
Currently, the world's only source of low-energy antiprotons is the AD/ELENA facility located at CERN. To date, all precision measurements on single antiprotons have been conducted at this facility and provide stringent tests of fundamental interactions and their symmetries. However, magnetic field fluctuations from the facility operation limit the precision of upcoming measurements. To overcome this limitation, we have designed the transportable antiproton trap system BASE-STEP to relocate antiprotons to laboratories with a calm magnetic environment. We anticipate that the transportable antiproton trap will facilitate enhanced tests of charge, parity, and time-reversal invariance with antiprotons and provide new experimental possibilities of using transported antiprotons and other accelerator-produced exotic ions. We present here the technical design of the transportable trap system. This includes the transportable superconducting magnet, the cryogenic inlay consisting of the trap stack and detection systems, and the differential pumping section to suppress the residual gas flow into the cryogenic trap chamber.
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Affiliation(s)
- C Smorra
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - D Schweitzer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - M Bohman
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - A Hobl
- Bilfinger Noell GmbH, Würzburg, Germany
| | - B Arndt
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - B B Bauer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - J A Devlin
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- CERN, Geneva, Switzerland
| | - S Erlewein
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- CERN, Geneva, Switzerland
| | - M Fleck
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - J I Jäger
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- CERN, Geneva, Switzerland
| | - B M Latacz
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- CERN, Geneva, Switzerland
| | - P Micke
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- CERN, Geneva, Switzerland
| | - M Schiffelholz
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
| | - G Umbrazunas
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Eidgenössisch Technische Hochschule Zürich, Zürich, Switzerland
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C Will
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - E Wursten
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- CERN, Geneva, Switzerland
| | - H Yildiz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C Ospelkaus
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - W Quint
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - A Soter
- Eidgenössisch Technische Hochschule Zürich, Zürich, Switzerland
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - Y Yamazaki
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - S Ulmer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
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5
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Latacz BM, Arndt BP, Devlin JA, Erlewein SR, Fleck M, Jäger JI, Micke P, Umbrazunas G, Wursten E, Abbass F, Schweitzer D, Wiesinger M, Will C, Yildiz H, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Smorra C, Sótér A, Quint W, Walz J, Yamazaki Y, Ulmer S. Ultra-thin polymer foil cryogenic window for antiproton deceleration and storage. Rev Sci Instrum 2023; 94:103310. [PMID: 37874231 DOI: 10.1063/5.0167262] [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: 07/11/2023] [Accepted: 08/17/2023] [Indexed: 10/25/2023]
Abstract
We present the design and characterization of a cryogenic window based on an ultra-thin aluminized biaxially oriented polyethylene terephthalate foil at T < 10 K, which can withstand a pressure difference larger than 1 bar at a leak rate <1×10-9 mbar l/s. Its thickness of ∼1.7 μm makes it transparent to various types of particles over a broad energy range. To optimize the transfer of 100 keV antiprotons through the window, we tested the degrading properties of different aluminum coated polymer foils of thicknesses between 900 and 2160 nm, concluding that 1760 nm foil decelerates antiprotons to an average energy of 5 keV. We have also explicitly studied the permeation as a function of coating thickness and temperature and have performed extensive thermal and mechanical endurance and stress tests. Our final design integrated into the experiment has an effective open surface consisting of seven holes with a diameter of 1 mm and will transmit up to 2.5% of the injected 100 keV antiproton beam delivered by the Antiproton Decelerator and Extra Low ENergy Antiproton ring facility of CERN.
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Affiliation(s)
- B M Latacz
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B P Arndt
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
- GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, D-64291 Darmstadt, Germany
| | - J A Devlin
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S R Erlewein
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - M Fleck
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-0041, Japan
| | - J I Jäger
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - P Micke
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - G Umbrazunas
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Eidgenössische Technische Hochschule Zürich, John-von-Neumann-Weg 9, 8093 Zürich, Switzerland
| | - E Wursten
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - D Schweitzer
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - C Will
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - H Yildiz
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-0041, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität, Welfengarten 1, D-30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany
| | - C Smorra
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - A Sótér
- Eidgenössische Technische Hochschule Zürich, John-von-Neumann-Weg 9, 8093 Zürich, Switzerland
| | - W Quint
- GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, D-64291 Darmstadt, Germany
| | - J Walz
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
- Helmholtz-Institut Mainz, Johannes Gutenberg-Universität, Staudingerweg 18, D-55128 Mainz, Germany
| | - Y Yamazaki
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ulmer
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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6
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Čulo M, Licciardello S, Ishida K, Mukasa K, Ayres J, Buhot J, Hsu YT, Imajo S, Qiu MW, Saito M, Uezono Y, Otsuka T, Watanabe T, Kindo K, Shibauchi T, Kasahara S, Matsuda Y, Hussey NE. Expanded quantum vortex liquid regimes in the electron nematic superconductors FeSe 1-xS x and FeSe 1-xTe x. Nat Commun 2023; 14:4150. [PMID: 37438333 DOI: 10.1038/s41467-023-39730-9] [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: 04/20/2022] [Accepted: 06/21/2023] [Indexed: 07/14/2023] Open
Abstract
The quantum vortex liquid (QVL) is an intriguing state of type-II superconductors in which intense quantum fluctuations of the superconducting (SC) order parameter destroy the Abrikosov lattice even at very low temperatures. Such a state has only rarely been observed, however, and remains poorly understood. One of the key questions is the precise origin of such intense quantum fluctuations and the role of nearby non-SC phases or quantum critical points in amplifying these effects. Here we report a high-field magnetotransport study of FeSe1-xSx and FeSe1-xTex which show a broad QVL regime both within and beyond their respective electron nematic phases. A clear correlation is found between the extent of the QVL and the strength of the superconductivity. This comparative study enables us to identify the essential elements that promote the QVL regime in unconventional superconductors and to demonstrate that the QVL regime itself is most extended wherever superconductivity is weakest.
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Affiliation(s)
- M Čulo
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525, ED, Nijmegen, Netherlands.
- Institut za fiziku, Bijenička cesta 46, HR-10000, Zagreb, Croatia.
| | - S Licciardello
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525, ED, Nijmegen, Netherlands
| | - K Ishida
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
| | - K Mukasa
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
| | - J Ayres
- H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK
| | - J Buhot
- H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK
| | - Y-T Hsu
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525, ED, Nijmegen, Netherlands
- Center for Theory and Computation, National Tsing Hua University, No. 101, Section. 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan
| | - S Imajo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - M W Qiu
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
| | - M Saito
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
| | - Y Uezono
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori, 036-8561, Japan
| | - T Otsuka
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori, 036-8561, Japan
| | - T Watanabe
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori, 036-8561, Japan
| | - K Kindo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - T Shibauchi
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
| | - S Kasahara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-Ku, Okayama, 700-8530, Japan
| | - Y Matsuda
- Department of Physics, Kyoto University, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - N E Hussey
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525, ED, Nijmegen, Netherlands.
- H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK.
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Latacz BM, Arndt BP, Bauer BB, Devlin JA, Erlewein SR, Fleck M, Jäger JI, Schiffelholz M, Umbrazunas G, Wursten EJ, Abbass F, Micke P, Popper D, Wiesinger M, Will C, Yildiz H, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Quint W, Soter A, Walz J, Yamazaki Y, Smorra C, Ulmer S. BASE-high-precision comparisons of the fundamental properties of protons and antiprotons. Eur Phys J D At Mol Opt Phys 2023; 77:94. [PMID: 37288385 PMCID: PMC10241734 DOI: 10.1140/epjd/s10053-023-00672-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/01/2023] [Indexed: 06/09/2023]
Abstract
Abstract The BASE collaboration at the antiproton decelerator/ELENA facility of CERN compares the fundamental properties of protons and antiprotons with ultra-high precision. Using advanced Penning trap systems, we have measured the proton and antiproton magnetic moments with fractional uncertainties of 300 parts in a trillion (p.p.t.) and 1.5 parts in a billion (p.p.b.), respectively. The combined measurements improve the resolution of the previous best test in that sector by more than a factor of 3000. Very recently, we have compared the antiproton/proton charge-to-mass ratios with a fractional precision of 16 p.p.t., which improved the previous best measurement by a factor of 4.3. These results allowed us also to perform a differential matter/antimatter clock comparison test to limits better than 3 %. Our measurements enable us to set limits on 22 coefficients of CPT- and Lorentz-violating standard model extensions (SME) and to search for potentially asymmetric interactions between antimatter and dark matter. In this article, we review some of the recent achievements and outline recent progress towards a planned improved measurement of the antiproton magnetic moment with an at least tenfold improved fractional accuracy. Graphic Abstract
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Affiliation(s)
- B. M. Latacz
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
| | - B. P. Arndt
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - B. B. Bauer
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
| | - J. A. Devlin
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
| | - S. R. Erlewein
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M. Fleck
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-0041 Japan
| | - J. I. Jäger
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M. Schiffelholz
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Institut für Quantenoptik, Leibniz Universität, Welfengarten 1, 30167 Hannover, Germany
| | - G. Umbrazunas
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Eidgenössisch Technische Hochschule Zürich, Rämistrasse 101, 8092 Zürich, Switzerland
| | - E. J. Wursten
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - F. Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
| | - P. Micke
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - D. Popper
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
| | - M. Wiesinger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C. Will
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - H. Yildiz
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
| | - K. Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Y. Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-0041 Japan
| | - A. Mooser
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C. Ospelkaus
- Institut für Quantenoptik, Leibniz Universität, Welfengarten 1, 30167 Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - W. Quint
- GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - A. Soter
- Eidgenössisch Technische Hochschule Zürich, Rämistrasse 101, 8092 Zürich, Switzerland
| | - J. Walz
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
- Helmholtz-Institut Mainz, Johannes Gutenberg-Universität, Staudingerweg 18, 55128 Mainz, Germany
| | - Y. Yamazaki
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - C. Smorra
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
| | - S. Ulmer
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Heinrich-Heine Universität, Universitätsstraße 1, 40225 Düsseldorf, Germany
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8
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Pohl T, Sun YL, Obertelli A, Lee J, Gómez-Ramos M, Ogata K, Yoshida K, Cai BS, Yuan CX, Brown BA, Baba H, Beaumel D, Corsi A, Gao J, Gibelin J, Gillibert A, Hahn KI, Isobe T, Kim D, Kondo Y, Kobayashi T, Kubota Y, Li P, Liang P, Liu HN, Liu J, Lokotko T, Marqués FM, Matsuda Y, Motobayashi T, Nakamura T, Orr NA, Otsu H, Panin V, Park SY, Sakaguchi S, Sasano M, Sato H, Sakurai H, Shimizu Y, Stefanescu AI, Stuhl L, Suzuki D, Togano Y, Tudor D, Uesaka T, Wang H, Xu X, Yang ZH, Yoneda K, Zenihiro J. Multiple Mechanisms in Proton-Induced Nucleon Removal at ∼100 MeV/Nucleon. Phys Rev Lett 2023; 130:172501. [PMID: 37172241 DOI: 10.1103/physrevlett.130.172501] [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: 01/08/2023] [Revised: 03/17/2023] [Accepted: 03/29/2023] [Indexed: 05/14/2023]
Abstract
We report on the first proton-induced single proton- and neutron-removal reactions from the neutron-deficient ^{14}O nucleus with large Fermi-surface asymmetry S_{n}-S_{p}=18.6 MeV at ∼100 MeV/nucleon, a widely used energy regime for rare-isotope studies. The measured inclusive cross sections and parallel momentum distributions of the ^{13}N and ^{13}O residues are compared to the state-of-the-art reaction models, with nuclear structure inputs from many-body shell-model calculations. Our results provide the first quantitative contributions of multiple reaction mechanisms including the quasifree knockout, inelastic scattering, and nucleon transfer processes. It is shown that the inelastic scattering and nucleon transfer, usually neglected at such energy regime, contribute about 50% and 30% to the loosely bound proton and deeply bound neutron removal, respectively. These multiple reaction mechanisms should be considered in analyses of inclusive one-nucleon removal cross sections measured at intermediate energies for quantitative investigation of single-particle strengths and correlations in atomic nuclei.
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Affiliation(s)
- T Pohl
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - Y L Sun
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - A Obertelli
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Gómez-Ramos
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - K Ogata
- Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047, Japan
| | - K Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - B S Cai
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082 Guangdong, People's Republic of China
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082 Guangdong, People's Republic of China
| | - B A Brown
- Department of Physics and Astronomy and the Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Beaumel
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gao
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K I Hahn
- Department of Physics, Ewha Womans University, Seoul, South Korea
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, South Korea
| | - T Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Kim
- Department of Physics, Ewha Womans University, Seoul, South Korea
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, South Korea
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - Y Kubota
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - P Li
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - P Liang
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - H N Liu
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, People's Republic of China
| | - J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - T Lokotko
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - Y Matsuda
- Cyclotron and Radioisotope Center, Tohoku University, Sendai 980-8578, Japan
- Department of Physics, Konan University, Kobe 658-8501, Japan
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - V Panin
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Y Park
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, Ewha Womans University, Seoul, South Korea
| | - S Sakaguchi
- Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
| | - M Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Shimizu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A I Stefanescu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH, 077125 Bucureşti-Măgurele, Romania
- Doctoral School of Physics, University of Bucharest, 077125 Bucureşti-Măgurele, Romania
| | - L Stuhl
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, South Korea
| | - D Suzuki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Togano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
| | - D Tudor
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH, 077125 Bucureşti-Măgurele, Romania
- Doctoral School of Physics, University of Bucharest, 077125 Bucureşti-Măgurele, Romania
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - X Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z H Yang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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9
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Iriarte E, Cianelli R, De Santis JP, Baeza MJ, Alamian A, Castro JG, Matsuda Y, Araya AX. Frailty among older Hispanics living in the United States: A scoping review. Geriatr Nurs 2022; 48:287-295. [PMID: 36335855 DOI: 10.1016/j.gerinurse.2022.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
Abstract
A scoping review was conducted to identify the available evidence about frailty among older Hispanics living in the U.S. using the Integral Model of Frailty. A not time-limited search was conducted in five peer-reviewed databases. Identified factors associated with frailty among older Hispanics are presented in four categories: (1) Characteristics and prevalence of frailty, (2) Life course determinants of frailty, (3) Comorbidities associated with frailty, and (4) Adverse outcomes of frailty. A total of 1030 articles were identified, and 37 articles were included in the scoping review. Most studies measured frailty based on the Fried Frailty Phenotype (59.5%, n= 22) and had a longitudinal design (64.9%, n= 24). The overall prevalence of frailty among Hispanics ranged from 4.3% to 37.1% (n= 20 studies). Further research is needed that targets Hispanics from different backgrounds in the U.S., particularly those that are high in number (i.e., Mexicans, Puerto Ricans, and Central Americans).
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Affiliation(s)
- E Iriarte
- CU College of Nursing, University of Colorado, 13120 E 19th Ave, Aurora, CO 80045, USA; Pontificia Universidad Católica de Chile, School of Nursing. Vicuña Mackenna 4680, Macul, Santiago, Chile; Millennium Institute for Care Research, MICARE. Chile.
| | - R Cianelli
- Pontificia Universidad Católica de Chile, School of Nursing. Vicuña Mackenna 4680, Macul, Santiago, Chile; School of Nursing and Health Studies, University of Miami, 5030 Brunson Dr, Coral Gables, FL, 33146, USA
| | - J P De Santis
- School of Nursing and Health Studies, University of Miami, 5030 Brunson Dr, Coral Gables, FL, 33146, USA
| | - M J Baeza
- Pontificia Universidad Católica de Chile, School of Nursing. Vicuña Mackenna 4680, Macul, Santiago, Chile; School of Nursing and Health Studies, University of Miami, 5030 Brunson Dr, Coral Gables, FL, 33146, USA
| | - A Alamian
- School of Nursing and Health Studies, University of Miami, 5030 Brunson Dr, Coral Gables, FL, 33146, USA
| | - J G Castro
- Leonard M. Miller School of Medicine, University of Miami, 1600 NW 10th Ave #1140, Miami, FL 33136, USA
| | - Y Matsuda
- School of Nursing and Health Studies, University of Miami, 5030 Brunson Dr, Coral Gables, FL, 33146, USA
| | - A X Araya
- Millennium Institute for Care Research, MICARE. Chile; School of Nursing, Universidad Andrés Bello, República 498, Santiago, Chile
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10
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Friedrich L, Kikuchi Y, Matsuda Y, Binder U, Skerra A. Efficient secretory production of proline/alanine/serine (PAS) biopolymers in Corynebacterium glutamicum yielding a monodisperse biological alternative to polyethylene glycol (PEG). Microb Cell Fact 2022; 21:227. [PMID: 36307781 PMCID: PMC9616612 DOI: 10.1186/s12934-022-01948-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 10/12/2022] [Indexed: 11/10/2022] Open
Abstract
Background PAS biopolymers are recombinant polypeptides comprising the small uncharged l-amino acids Pro, Ala and/or Ser which resemble the widely used poly-ethylene glycol (PEG) in terms of pronounced hydrophilicity. Likewise, their random chain behaviour in physiological solution results in a strongly expanded hydrodynamic volume. Thus, apart from their use as fusion partner for biopharmaceuticals to achieve prolonged half-life in vivo, PAS biopolymers appear attractive as substitute for PEG—or other poorly degradable chemical polymers—in many areas. As a prerequisite for the wide application of PAS biopolymers at affordable cost, we have established their highly efficient biotechnological production in Corynebacterium glutamicum serving as a well characterized bacterial host organism. Results Using the CspA signal sequence, we have secreted two representative PAS biopolymers as polypeptides with ~ 600 and ~ 1200 amino acid residues, respectively. Both PAS biopolymers were purified from the culture supernatant by means of a simple downstream process in a truly monodisperse state as evidenced by ESI–MS. Yields after purification were up to ≥ 4 g per liter culture, with potential for further increase by strain optimization as well as fermentation and bioprocess development. Beyond direct application as hydrocolloids or to exploit their rheological properties, such PAS biopolymers are suitable for site-specific chemical conjugation with pharmacologically active molecules via their unique terminal amino or carboxyl groups. To enable the specific activation of the carboxylate, without interference by the free amino group, we generated a blocked N-terminus for the PAS(1200) polypeptide simply by introducing an N-terminal Gln residue which, after processing of the signal peptide, was cyclised to a chemically inert pyroglutamyl group upon acid treatment. The fact that PAS biopolymers are genetically encoded offers further conjugation strategies via incorporation of amino acids with reactive side chains (e.g., Cys, Lys, Glu/Asp) at defined positions. Conclusions Our new PAS expression platform using Corynex® technology opens the way to applications of PASylation® technology in multiple areas such as the pharmaceutical industry, cosmetics and food technology.
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Affiliation(s)
- L Friedrich
- XL-protein GmbH, Lise-Meitner-Strasse 30, 85354, Freising, Germany
| | - Y Kikuchi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan
| | - Y Matsuda
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan
| | - U Binder
- XL-protein GmbH, Lise-Meitner-Strasse 30, 85354, Freising, Germany
| | - A Skerra
- XL-protein GmbH, Lise-Meitner-Strasse 30, 85354, Freising, Germany. .,Lehrstuhl für Biologische Chemie, Technische Universität München, Emil-Erlenmeyer-Forum 5, 85354, Freising, Germany.
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11
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Völksen F, Devlin JA, Borchert MJ, Erlewein SR, Fleck M, Jäger JI, Latacz BM, Micke P, Nuschke P, Umbrazunas G, Wursten EJ, Abbass F, Bohman MA, Popper D, Wiesinger M, Will C, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Smorra C, Soter A, Quint W, Walz J, Yamazaki Y, Ulmer S. A high-Q superconducting toroidal medium frequency detection system with a capacitively adjustable frequency range >180 kHz. Rev Sci Instrum 2022; 93:093303. [PMID: 36182508 DOI: 10.1063/5.0089182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We describe a newly developed polytetrafluoroethylene/copper capacitor driven by a cryogenic piezoelectric slip-stick stage and demonstrate with the chosen layout cryogenic capacitance tuning of ≈60 pF at ≈10 pF background capacitance. Connected to a highly sensitive superconducting toroidal LC circuit, we demonstrate tuning of the resonant frequency between 345 and 685 kHz, at quality factors Q > 100 000. Connected to a cryogenic ultra low noise amplifier, a frequency tuning range between 520 and 710 kHz is reached, while quality factors Q > 86 000 are achieved. This new device can be used as a versatile image current detector in high-precision Penning-trap experiments or as an LC-circuit-based haloscope detector to search for the conversion of axion-like dark matter to radio-frequency photons. This new development increases the sensitive detection bandwidth of our axion haloscope by a factor of ≈1000.
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Affiliation(s)
- F Völksen
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J A Devlin
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M J Borchert
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S R Erlewein
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Fleck
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J I Jäger
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B M Latacz
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Micke
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Nuschke
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - G Umbrazunas
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - E J Wursten
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M A Bohman
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Popper
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - C Will
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-0041, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität, Welfengarten 1, D-30167 Hannover, Germany
| | - C Smorra
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Soter
- Eidgenössisch Technische Hochschule Zürich, Rämistrasse 101, 8092 Zürich, Switzerland
| | - W Quint
- GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, D-64291 Darmstadt, Germany
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - Y Yamazaki
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ulmer
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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12
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Watanabe S, Yoshikai K, Tomida M, Suzuki S, Matsuda Y, Miyai S, Nakano E, Kurahashi H, Sawada T. P-131 The fate of irregularly divided blastomeres: why does “Direct cleavage” reduce blastocyst development rate but not blastocyst euploid rate? Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.126] [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: 11/12/2022] Open
Abstract
Abstract
Study question
How do the blastomeres formed by direct cleavage (dynamics of one cell dividing into three or more cells) subsequently develop?
Summary answer
About half of the blastomeres by direct cleavage did not form blastocysts.
What is known already
There are many reports that embryos with direct cleavage in the early development have a lower blastocyst development rate because direct cleavage produces chromosomal abnormal cells. However, when such embryos develop into blastocysts, there have been some reports that the transfer pregnancy rate and euploid rate did not decrease, but the reasons for this have not been clarified.
Study design, size, duration
This is a retrospective study of 89 blastocysts obtained during 2013-18. These embryos were those that patients requested to be discarded and consented to be used in this study. All target embryos were time-lapse monitored by EmbryoScope (Vitrolife, Sweden), and several trophectoderms were biopsied and examined for euploidy.
Participants/materials, setting, methods
The target embryos were classified into three groups: embryos with normal first and second cleavage (NC group), embryos with irregular division (one cell dividing into three or more cells) called direct cleavage at the first cleavage (DC1 group), and embryos with direct cleavage of one blastomere at the second cleavage (DC2 group). It was recorded whether the blastomeres of the embryos subsequently developed into blastocysts or not. NGS analysis was performed on the embryos.
Main results and the role of chance
The target embryos were classified as 48 in the NC group, 32 in the DC1 group, and 9 in the DC2 group. Whether the blastomeres in the target embryos subsequently formed blastocysts or not was recorded one by one by time-lapse images, resulting in the blastomeres’ blastocyst formation rate was 95.1% in the NC group and 55.9% in the DC1 group, which was significantly lower in the DC1 group (P < 0.01). In the DC2 group, blastomeres formed by normal division and those by direct cleavage at the second cleavage were recorded separately, and the blastocyst formation rate was 90.8% for normal cleavage blastomeres and 46.0% for direct cleavage blastomeres, with significantly lower rates for direct cleavage blastomeres (P < 0.01). Therefore, about half of the blastomeres generated by direct cleavage at the first or second cleavage did not form blastocysts. The results of NGS analysis were as follows: NC group: 35.4% euploid, 45.8% aneuploid, and 18.8% mosaic; DC1 group: 37.5%, 53.1%, and 9.4%, respectively; and DC2 group: 55.6%, 33.3%, and 11.1%, respectively. There was no significant difference in any of the items, suggesting that direct cleavage does not affect the euploidy of blastocysts.
Limitations, reasons for caution
For the purpose of NGS analysis, all the target embryos in this study were blastocysts, but if all the cultured embryos were included, arrested embryos would be included, which would probably result in more blastomeres formed by direct cleavage not developing into blastocysts.
Wider implications of the findings
The blastomeres generated by direct cleavage were often excluded from blastocyst formation. This may be an exclusion of chromosomally abnormal cells and may be one of the reasons why direct cleavage decreases blastocyst development rate but does not decrease blastocyst euploid rate.
Trial registration number
not applicable
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Affiliation(s)
- S Watanabe
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
| | - K Yoshikai
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
| | - M Tomida
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
| | - S Suzuki
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
| | - Y Matsuda
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
| | - S Miyai
- Fujita Health University, Institute for Comprehensive Medical Science , Toyoake, Japan
| | - E Nakano
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
| | - H Kurahashi
- Fujita Health University, Institute for Comprehensive Medical Science , Toyoake, Japan
| | - T Sawada
- Sawada Women's Clinic, ART Lab. , Nagoya, Japan
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13
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Takahashi Y, Kitadate A, Ikeda S, Iwama S, Abe K, Matsuda Y, Tagawa H, Wakui H, Takahashi N. P1272: GP130/STAT3 AXIS IS A POTENTIAL THERAPEUTIC TARGET FOR HISTONE DEACETYLASE INHIBITOR-RESISTANT CUTANEOUS T-CELL LYMPHOMA. Hemasphere 2022. [PMCID: PMC9429465 DOI: 10.1097/01.hs9.0000847952.99146.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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14
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Hunter E, Amsler C, Breuker H, Chesnevskaya S, Costantini G, Ferragut R, Giammarchi M, Gligorova A, Gosta G, Higaki H, Kanai Y, Killian C, Kletzl V, Kraxberger V, Kuroda N, Lanz A, Leali M, Mäckel V, Maero G, Malbrunot C, Mascagna V, Matsuda Y, Migliorati S, Murtagh D, Nagata Y, Nanda A, Nowak L, Pasino E, Romé M, Simon M, Tajima M, Toso V, Ulmer S, Uggerhøj U, Venturelli L, Weiser A, Widmann E, Wolz T, Yamazaki Y, Zmeskal J. Minimizing plasma temperature for antimatter mixing experiments. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202226201007] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The ASACUSA collaboration produces a beam of antihydrogen atoms by mixing pure positron and antiproton plasmas in a strong magnetic field with a double cusp geometry. The positrons cool via cyclotron radiation inside the cryogenic trap. Low positron temperature is essential for increasing the fraction of antihydrogen atoms which reach the ground state prior to exiting the trap. Many experimental groups observe that such plasmas reach equilibrium at a temperature well above the temperature of the surrounding electrodes. This problem is typically attributed to electronic noise and plasma expansion, which heat the plasma. The present work reports anomalous heating far beyond what can be attributed to those two sources. The heating seems to be a result of the axially open trap geometry, which couples the plasma to the external (300 K) environment via microwave radiation.
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15
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Matsuda Y, Ikeda S, Abe F, Takahashi Y, Kitadate A, Takahashi N, Wakui H, Tagawa H. Downregulation of miR-26 promotes invasion and metastasis via targeting interleukin-22 in cutaneous T-cell lymphoma. Cancer Sci 2022; 113:1208-1219. [PMID: 35133054 PMCID: PMC8990290 DOI: 10.1111/cas.15296] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/25/2022] [Accepted: 02/02/2022] [Indexed: 11/26/2022] Open
Abstract
It has been reported that certain microRNAs (miRNA) are associated with the pathogenesis of lymphoma. We have previously demonstrated that histone deacetylase inhibitors restore tumor-suppressive miRNAs, such as miR-16, miR-29, miR-150, and miR-26, in advanced cutaneous T-cell lymphoma (CTCL). Among these, the function of miR-26 remains unclear. In this study, we aimed to reveal the function of miR-26 in CTCL oncogenesis. First, we confirmed that the miR-26 family was markedly dysregulated in CTCL cell lines and primary samples. In vivo analysis using miR-26a-transduced CTCL cells injected into immunodeficient NOG mice demonstrated the significant prolonged survival of the mice, suggesting that the miRNA had a tumor-suppressive function. We performed gene expression assays and identified 12 candidate miR-26 targets, namely RGS13, FAM71F1, OAF, SNX21, CDH2, PTPLB, IL22, DNAJB5, CASZ1, CACNA1C, MYH10, and CNR1. Among these, IL22 was the most likely candidate target because the IL-22-STAT3-CCL20-CCR6 cascade is associated with tumor invasion and metastasis of advanced CTCL. In vitro analysis of IL22 and IL22RA knockdown and miR-26 transduction demonstrated inhibited CTCL cell migration. In particular, IL22 knockdown induced cell apoptosis. Finally, we conducted in vivo inoculation analysis of mice injected with shIL22-transfected CTCL cells, and found no tumor invasion or metastasis in the inoculated mice, although the control mice showed multiple tumor invasions and metastases. These results, along with our previous data, demonstrated that miR-26 is a tumor suppressor that is associated with tumor invasion and the metastasis of advanced CTCL by regulating the IL-22-STAT3-CCL20 cascade. Therefore, a IL-22-targeting therapy could be a novel therapeutic strategy for advanced CTCL.
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Affiliation(s)
- Yuka Matsuda
- Department of Life ScienceGraduate School of Engineering ScienceAkita UniversityAkitaJapan
| | - Sho Ikeda
- Department of Hematology, Nephrology, and RheumatologyAkita University Graduate School of MedicineAkitaJapan
| | - Fumito Abe
- Department of Hematology, Nephrology, and RheumatologyAkita University Graduate School of MedicineAkitaJapan
| | - Yuto Takahashi
- Department of Life ScienceGraduate School of Engineering ScienceAkita UniversityAkitaJapan
| | - Akihiro Kitadate
- Department of Hematology, Nephrology, and RheumatologyAkita University Graduate School of MedicineAkitaJapan
| | - Naoto Takahashi
- Department of Hematology, Nephrology, and RheumatologyAkita University Graduate School of MedicineAkitaJapan
| | - Hideki Wakui
- Department of Life ScienceGraduate School of Engineering ScienceAkita UniversityAkitaJapan
| | - Hiroyuki Tagawa
- Department of Hematology, Nephrology, and RheumatologyAkita University Graduate School of MedicineAkitaJapan
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16
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Borchert MJ, Devlin JA, Erlewein SR, Fleck M, Harrington JA, Higuchi T, Latacz BM, Voelksen F, Wursten EJ, Abbass F, Bohman MA, Mooser AH, Popper D, Wiesinger M, Will C, Blaum K, Matsuda Y, Ospelkaus C, Quint W, Walz J, Yamazaki Y, Smorra C, Ulmer S. A 16-parts-per-trillion measurement of the antiproton-to-proton charge-mass ratio. Nature 2022; 601:53-57. [PMID: 34987217 DOI: 10.1038/s41586-021-04203-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 11/03/2021] [Indexed: 11/09/2022]
Abstract
The standard model of particle physics is both incredibly successful and glaringly incomplete. Among the questions left open is the striking imbalance of matter and antimatter in the observable universe1, which inspires experiments to compare the fundamental properties of matter/antimatter conjugates with high precision2-5. Our experiments deal with direct investigations of the fundamental properties of protons and antiprotons, performing spectroscopy in advanced cryogenic Penning trap systems6. For instance, we previously compared the proton/antiproton magnetic moments with 1.5 parts per billion fractional precision7,8, which improved upon previous best measurements9 by a factor of greater than 3,000. Here we report on a new comparison of the proton/antiproton charge-to-mass ratios with a fractional uncertainty of 16 parts per trillion. Our result is based on the combination of four independent long-term studies, recorded in a total time span of 1.5 years. We use different measurement methods and experimental set-ups incorporating different systematic effects. The final result, [Formula: see text], is consistent with the fundamental charge-parity-time reversal invariance, and improves the precision of our previous best measurement6 by a factor of 4.3. The measurement tests the standard model at an energy scale of 1.96 × 10-27 gigaelectronvolts (confidence level 0.68), and improves ten coefficients of the standard model extension10. Our cyclotron clock study also constrains hypothetical interactions mediating violations of the clock weak equivalence principle (WEPcc) for antimatter to less than 1.8 × 10-7, and enables the first differential test of the WEPcc using antiprotons11. From this interpretation we constrain the differential WEPcc-violating coefficient to less than 0.030.
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Affiliation(s)
- M J Borchert
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany.,Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - J A Devlin
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,CERN, Meyrin, Switzerland
| | - S R Erlewein
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,CERN, Meyrin, Switzerland.,Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M Fleck
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - J A Harrington
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - T Higuchi
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - B M Latacz
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan
| | - F Voelksen
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,GSI-Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - E J Wursten
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,CERN, Meyrin, Switzerland.,Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - M A Bohman
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A H Mooser
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D Popper
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - M Wiesinger
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C Will
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany.,Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - W Quint
- GSI-Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany.,Helmholtz-Institut Mainz, Johannes Gutenberg-Universität, Mainz, Germany
| | - Y Yamazaki
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan
| | - C Smorra
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.,Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - S Ulmer
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Saitama, Japan.
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17
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Kasahara S, Suzuki H, Machida T, Sato Y, Ukai Y, Murayama H, Suetsugu S, Kasahara Y, Shibauchi T, Hanaguri T, Matsuda Y. Quasiparticle Nodal Plane in the Fulde-Ferrell-Larkin-Ovchinnikov State of FeSe. Phys Rev Lett 2021; 127:257001. [PMID: 35029441 DOI: 10.1103/physrevlett.127.257001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, characterized by Cooper pairs condensed at finite momentum, has been a long-sought state that remains unresolved in many classes of fermionic systems, including superconductors and ultracold atoms. A fascinating aspect of the FFLO state is the emergence of periodic nodal planes in real space, but its observation is still lacking. Here we investigate the superconducting order parameter at high magnetic fields H applied perpendicular to the ab plane in a high-purity single crystal of FeSe. The heat capacity and magnetic torque provide thermodynamic evidence for a distinct superconducting phase at the low-temperature/high-field corner of the phase diagram. Despite the bulk superconductivity, spectroscopic-imaging scanning tunneling microscopy performed on the same crystal demonstrates that the order parameter vanishes at the surface upon entering the high-field phase. These results provide the first demonstration of a pinned planar node perpendicular to H, which is consistent with a putative FFLO state.
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Affiliation(s)
- S Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - H Suzuki
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Machida
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - Y Sato
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - Y Ukai
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Murayama
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Suetsugu
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Shibauchi
- Department of Advanced Materials Science, University of Tokyo, Chiba 277-8561, Japan
| | - T Hanaguri
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
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18
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Kanda T, Masuda M, Inoue K, Furukawa Y, Hirata A, Egami Y, Watanabe T, Minamiguchi H, Miyoshi M, Matsuda Y, Sunaga A, Sotomi Y, Dohi T, Hikoso S, Sakata Y. Differences in quality of life improvement with pulmonary vein isolation alone vs. more extensive ablation of persistent atrial fibrillation: insights from the EARNEST-PVI trial. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0512] [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
Background
Improving the quality of life (QoL) is one of the main purposes of catheter ablation (CA) of persistent atrial fibrillation (AF). QoL improvement in persistent AF patients has not been fully clarified. The EARNEST-PVI trial was a multi-center randomized trial comparing clinical outcomes of pulmonary vein isolation (PVI) alone and more intensive ablation in addition to PVI including complex fractionated atrial electrogram (CFAE) and linear ablation (PVI plus).
Purpose
To investigate the QoL change after persistent AF ablation and the differences between the PVI-alone strategy and the PVI plus strategy.
Methods
In the EARNEST-PVI trial, patients with persistent AF who underwent an initial catheter ablation (n=512) were randomly assigned in a 1:1 ratio to either PVI alone or PVI plus. Quality of life was assessed at baseline and at 12 months after ablation for AF using the 36-Item Short Form Health Survey. Scores were also converted to a physical health component summary (PCS), a mental health component summary (MCS) and a role/social component summary (RCS).
Results
In the EARNEST-PVI trial, the PVI alone strategy was associated with higher recurrence rate compared with the PVI plus additional ablation strategy. After excluding 68 patients for whom preoperative or postoperative QoL assessment was not available, 222 patients were evaluated respectively. Overall, significant improvements in PCS (46.2±11.4 to 48.7±11.4]), MCS (50.1±8.8 to 54.3±8.6) and RCS (44.6±13.3 to 48.6±11.3) occurred 12 months after ablation (P<0.001, respectively). Although significant QoL improvement occurred in both PVI alone and PLI plus strategies, the changes in PCS was greater in the PVI-plus than that in PVI-alone (3.5±10.3 vs 1.5±10.6, P=0.04).
Conclusions
Ablation for persistent atrial fibrillation improved both physical and mental quality of life. The PVI-plus strategy showed greater improvement in physical QoL.
Funding Acknowledgement
Type of funding sources: None. QoL improvement
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Affiliation(s)
- T Kanda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Masuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - K Inoue
- Sakurabashi-Watanabe Hospital, Cardiovascular center, Osaka, Japan
| | - Y Furukawa
- Osaka General Medical Center, Division of Cardiology, Osaka, Japan
| | - A Hirata
- Osaka Police Hospital, Cardiovascular Division, Osaka, Japan
| | - Y Egami
- Osaka Rosai Hospital, Division of Cardiology, Osaka, Japan
| | - T Watanabe
- Yao Municipal Hospital, Division of Cardiology, Yao, Japan
| | - H Minamiguchi
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - M Miyoshi
- Japan Community Health care Organization Osaka Hospital, Division of Cardiology, Osaka, Japan
| | - Y Matsuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - A Sunaga
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - Y Sotomi
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - T Dohi
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
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19
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Okabe K, Matsuda Y, Hara K, Nagano K. P37.01 The Results of Multimodal Treatment With Extrapleural Pneumonectomy for Female Epithelioid Malignant Pleural Mesothelioma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.428] [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: 11/26/2022]
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20
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Shimojima T, Motoyui Y, Taniuchi T, Bareille C, Onari S, Kontani H, Nakajima M, Kasahara S, Shibauchi T, Matsuda Y, Shin S. Discovery of mesoscopic nematicity wave in iron-based superconductors. Science 2021; 373:1122-1125. [PMID: 34516833 DOI: 10.1126/science.abd6701] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- T Shimojima
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Motoyui
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
| | - T Taniuchi
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan.,Material Innovation Research Center (MIRC), The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - C Bareille
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan.,Material Innovation Research Center (MIRC), The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - S Onari
- Department of Physics, Nagoya University, Furo-cho, Nagoya 464-8602, Japan
| | - H Kontani
- Department of Physics, Nagoya University, Furo-cho, Nagoya 464-8602, Japan
| | - M Nakajima
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Shibauchi
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Shin
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan.,Material Innovation Research Center (MIRC), The University of Tokyo, Kashiwa, Chiba 277-8561, Japan.,Office of University Professor, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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21
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Kuwayama T, Matsuura K, Gouchi J, Yamakawa Y, Mizukami Y, Kasahara S, Matsuda Y, Shibauchi T, Kontani H, Uwatoko Y, Fujiwara N. Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe. Sci Rep 2021; 11:17265. [PMID: 34446750 PMCID: PMC8390510 DOI: 10.1038/s41598-021-96277-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/04/2021] [Indexed: 11/19/2022] Open
Abstract
FeSe is a unique high-\documentclass[12pt]{minimal}
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\begin{document}$$T_c$$\end{document}Tc iron-based superconductor in which nematicity, superconductivity, and magnetism are entangled with each other in the P-T phase diagram. We performed \documentclass[12pt]{minimal}
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\begin{document}$$^{77}$$\end{document}77Se-nuclear magnetic resonance measurements under pressures of up to 3.9 GPa on 12% S-substituted FeSe, in which the complex overlap between the nematicity and magnetism are resolved. A pressure-induced Lifshitz transition was observed at 1.0 GPa as an anomaly of the density of states and as double superconducting (SC) domes accompanied by different types of antiferromagnetic (AF) fluctuations. The low-\documentclass[12pt]{minimal}
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\begin{document}$$T_{\mathrm{c}}$$\end{document}Tc SC dome below 1 GPa is accompanied by strong AF fluctuations, whereas the high-\documentclass[12pt]{minimal}
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\begin{document}$$T_{\mathrm{c}}$$\end{document}Tc SC dome develops above 1 GPa, where AF fluctuations are fairly weak. These results suggest the importance of the \documentclass[12pt]{minimal}
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\begin{document}$$d_{xy}$$\end{document}dxy orbital and its intra-orbital coupling for the high-\documentclass[12pt]{minimal}
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\begin{document}$$T_{\mathrm{c}}$$\end{document}Tc superconductivity.
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Affiliation(s)
- T Kuwayama
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cyo, Sakyo-ku, Kyoto, 606-8501, Japan
| | - K Matsuura
- Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan.,Research Center for Advanced Science and Technology, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - J Gouchi
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - Y Yamakawa
- Department of Physics, Nagoya University, Furo-cho, Nagoya, 464-8602, Japan
| | - Y Mizukami
- Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - S Kasahara
- Division of Physics and Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan.,Department of Physics, Okayama University, Okayama, 700-8530, Japan
| | - Y Matsuda
- Division of Physics and Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - T Shibauchi
- Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - H Kontani
- Department of Physics, Nagoya University, Furo-cho, Nagoya, 464-8602, Japan
| | - Y Uwatoko
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - N Fujiwara
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cyo, Sakyo-ku, Kyoto, 606-8501, Japan.
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22
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Watanabe S, Tomida M, Suzuki S, Matsuda Y, Yoshikai K, Nakano E, Sawada T. P–131 Significance of the phenomenon of blastomere exclusion from compaction: Its relation to irregular cleavage, blastocyst development rate, and pregnancy rate. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.130] [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
When does blastomere exclusion from compaction increase and what effect does it have on the embryo?
Summary answer
More blastomere were excluded from compaction in embryos with irregular cleavage, resulting in lower blastocyst development rates, but no decrease in pregnancy rates at transfer.
What is known already
It has been reported that many of the chromosome analysis results of blastomere excluded from compaction were aneuploid, and pointed out that this exclusion may be related to the repair of blastocyst euploidy, but the effect of the number of excluded blastomere has not been reported.
Study design, size, duration
This is a retrospective study of 578 embryos that developed into morula with time-lapse monitoring by EmbryoScope (Vitrolife) in 2018–2019.
Participants/materials, setting, methods
The target embryos were classified into two groups: embryos with normal first and second cleavage (normal cleavage group) and embryos with irregular cleavage (dynamics of one cell dividing into three or more cells), called “direct cleavage”, at either cleavage (DC group), and the number of blastomere excluded from compaction during morula formation was recorded and compared. The blastocyst development rate and single blastocyst transfer pregnancy rates of the two groups were compared.
Main results and the role of chance
There are 286 in the normal cleavage group and 292 in the DC group. The mean number of excluded blastomere was 0.76 and 3.55, respectively, which was significantly higher in the DC group (P < 0.01). Good blastocyst (Gardner classification 4 or higher) development rate was 84.5% (239/283) and 65.8% (181/275), respectively, and high grade blastocyst (Gardner classification BB or higher) development rate was 43.9% (105/239) and 14.9% (27/181) of them, both significantly higher in the normal cleavage group (P < 0.01). The single blastocyst transfer pregnancy rates were 31.6% (25/79) and 32.4% (11/34), and the miscarriage rates were 24.0% (6/25) and 27.3% (3/11), respectively, neither was there a significant difference between the two groups. So, direct cleavage increased the number of blastomere excluded from compaction, decreased the rate of morula to good blastocyst development and reduced blastocyst grade, but did not affect blastocyst transfer pregnancy rate and miscarriage rate.
Limitations, reasons for caution
Please note that all target embryos must have developed into morula or larger (embryos that did not develop into morula will not be included in the study).
Wider implications of the findings: Severe chromosomal aberrant blastomeres formed by direct cleavage were excluded from compaction, and the blastocyst development rate decreased due to a decrease in the amount of viable cells, but it is suggested that this blastomere exclusion mechanism is not related to euploidy after blastocyst development.
Trial registration number
Not applicable
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Affiliation(s)
- S Watanabe
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
| | - M Tomida
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
| | - S Suzuki
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
| | - Y Matsuda
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
| | - K Yoshikai
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
| | - E Nakano
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
| | - T Sawada
- Sawada Women’s Clinic, ART Lab., Nagoya, Japan
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23
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Yokoi T, Ma S, Kasahara Y, Kasahara S, Shibauchi T, Kurita N, Tanaka H, Nasu J, Motome Y, Hickey C, Trebst S, Matsuda Y. Half-integer quantized anomalous thermal Hall effect in the Kitaev material candidate α-RuCl 3. Science 2021; 373:568-572. [PMID: 34326240 DOI: 10.1126/science.aay5551] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 04/19/2020] [Accepted: 06/29/2021] [Indexed: 02/01/2023]
Abstract
Half-integer thermal quantum Hall conductance has recently been reported for the two-dimensional honeycomb material α-RuCl3 We found that the half-integer thermal Hall plateau appears even for a magnetic field with no out-of-plane components. The measured field-angular variation of the quantized thermal Hall conductance has the same sign structure as the topological Chern number of the pure Kitaev spin liquid. This observation suggests that the non-Abelian topological order associated with fractionalization of the local magnetic moments persists even in the presence of non-Kitaev interactions in α-RuCl3.
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Affiliation(s)
- T Yokoi
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Ma
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
| | - S Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Shibauchi
- Department of Advanced Materials Science, University of Tokyo, Chiba 277-8561, Japan
| | - N Kurita
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
| | - H Tanaka
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
| | - J Nasu
- Department of Physics, Yokohama National University, Hodogaya, Yokohama 240-8501, Japan
| | - Y Motome
- Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - C Hickey
- Institute for Theoretical Physics, University of Cologne, 50937 Cologne, Germany
| | - S Trebst
- Institute for Theoretical Physics, University of Cologne, 50937 Cologne, Germany
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
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24
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Bohman M, Grunhofer V, Smorra C, Wiesinger M, Will C, Borchert MJ, Devlin JA, Erlewein S, Fleck M, Gavranovic S, Harrington J, Latacz B, Mooser A, Popper D, Wursten E, Blaum K, Matsuda Y, Ospelkaus C, Quint W, Walz J, Ulmer S. Sympathetic cooling of a trapped proton mediated by an LC circuit. Nature 2021; 596:514-518. [PMID: 34433946 PMCID: PMC8387233 DOI: 10.1038/s41586-021-03784-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 06/29/2021] [Indexed: 02/07/2023]
Abstract
Efficient cooling of trapped charged particles is essential to many fundamental physics experiments1,2, to high-precision metrology3,4 and to quantum technology5,6. Until now, sympathetic cooling has required close-range Coulomb interactions7,8, but there has been a sustained desire to bring laser-cooling techniques to particles in macroscopically separated traps5,9,10, extending quantum control techniques to previously inaccessible particles such as highly charged ions, molecular ions and antimatter. Here we demonstrate sympathetic cooling of a single proton using laser-cooled Be+ ions in spatially separated Penning traps. The traps are connected by a superconducting LC circuit that enables energy exchange over a distance of 9 cm. We also demonstrate the cooling of a resonant mode of a macroscopic LC circuit with laser-cooled ions and sympathetic cooling of an individually trapped proton, reaching temperatures far below the environmental temperature. Notably, as this technique uses only image-current interactions, it can be easily applied to an experiment with antiprotons1, facilitating improved precision in matter-antimatter comparisons11 and dark matter searches12,13.
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Affiliation(s)
- M Bohman
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan.
| | - V Grunhofer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - C Smorra
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
| | - C Will
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M J Borchert
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - J A Devlin
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- CERN, Geneva, Switzerland
| | - S Erlewein
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- CERN, Geneva, Switzerland
| | - M Fleck
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - S Gavranovic
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - J Harrington
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
| | - B Latacz
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D Popper
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - E Wursten
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- CERN, Geneva, Switzerland
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - W Quint
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - S Ulmer
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
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25
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Shimura H, Manita S, Mochizuki T, Matsuda Y, Ihara T, Kira S, Mitsui T, Kitamura K, Takeda M. Therapeutic potential of cell-type selective optogenetics for a mouse model with urinary frequency. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00406-1] [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: 11/26/2022]
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26
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Naritsuka M, Terashima T, Matsuda Y. Controlling unconventional superconductivity in artificially engineered f-electron Kondo superlattices. J Phys Condens Matter 2021; 33:273001. [PMID: 33946054 DOI: 10.1088/1361-648x/abfdf2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Unconventional superconductivity and magnetism are intertwined on a microscopic level in a wide class of materials, including high-Tccuprates, iron pnictides, and heavy-fermion compounds. Interactions between superconducting electrons and bosonic fluctuations at the interface between adjacent layers in heterostructures provide a new approach to this most fundamental and hotly debated subject. We have been able to use a recent state-of-the-art molecular-beam-epitaxy technique to fabricate superlattices consisting of different heavy-fermion compounds with atomic thickness. These Kondo superlattices provide a unique opportunity to study the mutual interaction between unconventional superconductivity and magnetic order through the atomic interface. Here, we design and fabricate hybrid Kondo superlattices consisting of alternating layers of superconducting CeCoIn5withd-wave pairing symmetry and nonmagnetic metal YbCoIn5or antiferromagnetic heavy fermion metals such as CeRhIn5and CeIn3. In these Kondo superlattices, superconducting heavy electrons are confined within the two-dimensional CeCoIn5block layers and interact with neighboring nonmagnetic or magnetic layers through the interface. Superconductivity is strongly influenced by local inversion symmetry breaking at the interface in CeCoIn5/YbCoIn5superlattices. The superconducting and antiferromagnetic states coexist in spatially separated layers in CeCoIn5/CeRhIn5and CeCoIn5/CeIn3superlattices, but their mutual coupling via the interface significantly modifies the superconducting and magnetic properties. The fabrication of a wide variety of hybrid superlattices paves a new way to study the relationship between unconventional superconductivity and magnetism in strongly correlated materials.
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Affiliation(s)
- M Naritsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Terashima
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
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27
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Watanabe T, Adachi O, Watanabe Y, Hirama T, Matsuda Y, Noda M, Niikawa H, Oishi H, Suzuki Y, Ejima Y, Toyama H, Kondo T, Saiki Y. Lung Transplantation with Pulmonary Artery Reconstruction Using Donor Aorta for Pulmonary Hypertension with Giant Pulmonary Arterial Aneurysm: Intermediate-Term Result. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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28
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Sugita Y, Nakamura T, Sawada R, Takiguchi G, Urakawa N, Hasegawa H, Yamamoto M, Kanaji S, Matsuda Y, Yamashita K, Matsuda T, Oshikiri T, Suzuki S, Kakeji Y. Safety and feasibility of minimally invasive esophagectomy for elderly esophageal cancer patients. Dis Esophagus 2021; 34:5902470. [PMID: 32895704 DOI: 10.1093/dote/doaa083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/27/2020] [Accepted: 07/23/2020] [Indexed: 12/11/2022]
Abstract
The number of elderly patients with esophageal cancer has increased in recent years. The use of thoracoscopic esophagectomy has also increased, and its minimal invasiveness is believed to contribute to postoperative outcomes. However, the short- and long-term outcomes in elderly patients remain unclear. This study aimed to elucidate the safety and feasibility of minimally invasive esophagectomy in elderly patients. This retrospective study included 207 patients who underwent radical thoracoscopic esophagectomy for thoracic esophageal squamous cell carcinoma at Kobe University Hospital between 2005 and 2014. Patients were divided into non-elderly (<75 years) and elderly (≥75 years) groups. A propensity score matching analysis was performed for sex and clinical T and N stage, with a total of 29 matched pairs. General preoperative data, surgical procedures, intraoperative data, postoperative complications, in-hospital death, cancer-specific survival, and overall survival were compared between groups. The elderly group was characterized by lower preoperative serum albumin levels and higher American Society of Anesthesiologists grade. Intraoperative data and postoperative complications did not differ between the groups. The in-hospital death rate was 4% in the elderly group, which did not significantly differ from the non-elderly group. Cancer-specific survival was similar between the two groups. Although overall survival tended to be poor in the elderly group, it was not significantly worse than that of the non-elderly group. In conclusion, the short- and long-term outcomes of minimally invasive esophagectomy in elderly versus non-elderly patients were acceptable. Minimally invasive esophagectomy is a safe and feasible modality for elderly patients with appropriate indications.
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Affiliation(s)
- Y Sugita
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Nakamura
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - R Sawada
- Colorectal Surgery Department, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - G Takiguchi
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - N Urakawa
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Hasegawa
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - M Yamamoto
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Kanaji
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Y Matsuda
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Yamashita
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Matsuda
- Division of Minimally Invasive Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Oshikiri
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Suzuki
- Division of Community Medicine and Medical Network, Department of Social Community Medicine and Health Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Y Kakeji
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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29
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Okuma Y, Hirotsune N, Sotome Y, Kegoya Y, Matsuda Y, Sato Y, Tomita Y, Tanabe T, Muraoka K, Nishino S, Daido S. Middle meningeal artery embolization for chronic subdural hematoma with cerebrospinal fluid hypovolemia: A report of 2 cases. Neurochirurgie 2021; 68:123-128. [PMID: 33667531 DOI: 10.1016/j.neuchi.2021.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 02/06/2021] [Accepted: 02/13/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Chronic subdural hematoma (CSDH) with cerebrospinal fluid hypovolemia syndrome (CHS) remains refractory to standard treatment with hematoma drainage by burr hole and irrigation and/or epidural blood patch. Previously, we reported the utility of middle meningeal artery (MMA) embolization for intractable CSDH. In this study, we present the usefulness of MMA embolization as a treatment for CSDHs with CHSs. CASES We present two cases of CSDHs with CHSs occurring in patients, 1 treated with burr hole craniotomy and irrigation, and the other treated with the epidural blood patch. Both patients exhibited similar-appearing bilateral relatively-thin hematomas, hyperplasia, and enhanced contrast effects in the dura mater, and extradural hygroma in the cervical portion on enhanced magnetic resonance imaging scans. Also, to reviewing prior literature and imaging findings, they had already undergone conventional treatment. We added MMA embolization treatment and they followed a good course. RESULTS Despite the known intractable outcomes of patients with CSDHs with CHSs, MMA embolization worked well in the current case series. CONCLUSION MMA embolization might be considered as a preferred therapeutic option for CSDHs with CHSs in order to buy time before the epidural blood patch starts working.
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Affiliation(s)
- Y Okuma
- Department of Neurological Surgery, Fukuyama City Hospital, Fukuyama, Japan; Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan.
| | - N Hirotsune
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Y Sotome
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Y Kegoya
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Y Matsuda
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Y Sato
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Y Tomita
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - T Tanabe
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - K Muraoka
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - S Nishino
- Department of Neurological Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - S Daido
- Department of Neurological Surgery, Fukuyama City Hospital, Fukuyama, Japan
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30
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Okabe K, Matsuda Y, Hara K, Nagano K. P21.17 Pneumonectomy for Locally Advanced Non-Small Cell Lung Cancer after Neoadjuvant Concurrent Chemo-Radiation Therapy. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Kobayashi N, Toyama H, Kubo R, Matsuda Y, Okada Y, Ejima Y, Yamauchi M. Bicarbonate in Arteries Measured Preoperatively for Cadaveric Single-lung Transplantation is Related to Intraoperative Extra-Corporeal Membrane Oxygenation Use: A Retrospective Preliminary Study. Int J Organ Transplant Med 2021; 12:37-42. [PMID: 36570358 PMCID: PMC9758997] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background There are no known predictors of extracorporeal membrane oxygenation (ECMO) induction for single lung transplantation. Objective The purpose of the present study was to clarify the relationship between variables and ECMO requirements in single lung transplantation. Methods This study included adult patients who underwent cadaveric single lung transplantation between 2010 and 2019. After general anesthesia, the transplanted lungs were ventilated in all cases. The analysis included 38 patients in the ECMO required (RQ) group and 12 patients in the ECMO non-required (FR) group. Comparisons were made between the two groups for data affecting ECMO implementation, and data that were significantly different were subjected to multivariate analysis. Results Prior to anesthesia, the bicarbonate (HCO3-) value of the FR group was lower than that of the RQ group (24.6±2.7 vs. 29.7±5.3 mmol/L, p=0.005). Multivariate analysis showed that the cut-off bicarbonate value was 29.6. The area under the receiver operating characteristic curve (AUROC) of the model was 0.869 (R2: 0.331), with a sensitivity of 79% and a specificity of 88%. The odds ratio was 1.63 for every unit increase in the bicarbonate value (95%CI: 1.11-2.39, p<0.001). Further, the FR group had higher arterial blood pressure (mean: 79.0±11.5 vs. 68.9±8.3 mmHg, p=0.030), less blood loss (432±385 vs. 1,623±1,997 g, p<0.001), shorter operation time (417±44 vs. 543±111 min, p<0.001), and shorter ICU stay (11±9 vs. 25±38 days, p=0.039). Conclusion Preoperative evaluation of bicarbonate could predict the need for ECMO for single lung transplantation.
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Affiliation(s)
- N. Kobayashi
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, Tohoku University, Japan,Correspondence: Naoya Kobayashi, MD, PhD, Department of Anesthesiology, Tohoku University Hospital 1-1 Seiryomachi, Aoba, Sendai, Japan, 980-857
| | - H. Toyama
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, Tohoku University, Japan
| | - R. Kubo
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, Tohoku University, Japan
| | - Y. Matsuda
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Japan
| | - Y. Okada
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Japan
| | - Y. Ejima
- Department of Surgical Center and Supply, Tohoku University, Japan
| | - M. Yamauchi
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, Tohoku University, Japan
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Yokomoto-Umakoshi M, Umakoshi H, Ogata M, Fukumoto T, Matsuda Y, Miyazawa T, Sakamoto R, Ogawa Y. Coexistence of osteoporosis and atherosclerosis in pheochromocytoma: new insights into its long-term management. Osteoporos Int 2020; 31:2151-2160. [PMID: 32617610 DOI: 10.1007/s00198-020-05527-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/26/2020] [Indexed: 02/06/2023]
Abstract
UNLABELLED Osteoporosis and atherosclerosis frequently coexist in patients with pheochromocytoma. The presence of osteoporosis may predict that of atherosclerosis and vice versa in patients with PHEO. These findings have implications for the long-term management of the pheochromocytoma and its potential chronic complications. INTRODUCTION Pheochromocytoma (PHEO), a catecholamine-producing tumor, is often found incidentally, and it may be present for years before it is diagnosed. However, long-term exposure to catecholamines excess may induce chronic complications, such as osteoporosis and atherosclerosis. We aimed to evaluate concomitant osteoporosis and atherosclerosis in patients with PHEO. METHODS Fifty-one patients with PHEO and 51 patients with a non-functional adrenal tumor were compared radiographically for the prevalence of vertebral fracture (VF), a typical osteoporotic fracture, and abdominal aortic calcification (AAC). RESULTS In patients with PHEO, the prevalence of AAC was higher in those with VF (58%) than in those without (6%, p < 0.001). AAC was associated with VF after adjusting for age and sex (odds ratio, 1.53; 95% confidence interval, 1.07-2.46; p = 0.003) in patients with PHEO. The degree of catecholamine excess correlated with the presence of VF and AAC (p = 0.007). The prevalence of VF was higher in patients with PHEO (37%) than those with non-functional AT (12%, p = 0.005), but the prevalence of AAC was comparable between the two groups (25% and 19%, p = 0.636). VF and AAC more frequently coexisted in patients with PHEO (22%) than in those with non-functional AT (2%, p = 0.003). CONCLUSION This study represents the first demonstration that osteoporosis and atherosclerosis frequently coexist in patients with PHEO. The presence of osteoporosis may predict that of atherosclerosis and vice versa in patients with PHEO. These findings have implications for the long-term management of the PHEO and its potential chronic complications.
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Affiliation(s)
- M Yokomoto-Umakoshi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - H Umakoshi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | - M Ogata
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Fukumoto
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Matsuda
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Miyazawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - R Sakamoto
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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Ikeda S, Abe F, Matsuda Y, Kitadate A, Takahashi N, Tagawa H. Hypoxia-inducible hexokinase-2 enhances anti-apoptotic function via activating autophagy in multiple myeloma. Cancer Sci 2020; 111:4088-4101. [PMID: 32790954 PMCID: PMC7648043 DOI: 10.1111/cas.14614] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/30/2020] [Accepted: 08/09/2020] [Indexed: 12/21/2022] Open
Abstract
Multiple myeloma (MM) is an incurable hematopoietic neoplasm derived from plasma cells, and existing in the bone marrow. Recent developments in the field of myeloma onco-biology have enabled the use of proteasome inhibitors (PIs) as key drugs for MM. PIs can increase cell sensitivity to endoplasmic reticulum stress, leading to apoptosis of myeloma cells. PI cannot kill all myeloma cells, however; one reason of this might be activation of autophagy via hypoxic stress in the bone marrow microenvironment. Hypoxia-inducible gene(s) that regulate autophagy may be novel therapeutic target(s) for PI-resistant myeloma cells. Here, a hypoxia-inducible glycolytic enzyme hexokinase-2 (HK2) was demonstrated to contribute by autophagy activation to the acquisition of an anti-apoptotic phenotype in myeloma cells. We found that hypoxic stress led to autophagy activation accompanied by HK2 upregulation in myeloma cells. Under hypoxic conditions, HK2 knockdown inhibited glycolysis and impaired autophagy, inducing apoptosis. The cooperative effects of a PI (bortezomib) against immunodeficient mice inoculated with HK2-knocked down myeloma cells were examined and significant tumor reduction was observed. An HK2 inhibitor, 3-bromopyruvate (3-BrPA), also induced apoptosis under hypoxic rather than normoxic conditions. Further examination of the cooperative effects between 3-BrPA and bortezomib on myeloma cells revealed a significant increase in apoptotic myeloma cells. These results strongly suggested that HK2 regulates the activation of autophagy in hypoxic myeloma cells. Cooperative treatment using PI against a dominant fraction, and HK2 inhibitor against a minor fraction, adapted to the bone marrow microenvironment, may lead to deeper remission for refractory MM.
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Affiliation(s)
- Sho Ikeda
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - Fumito Abe
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - Yuka Matsuda
- Department of Life Science, Akita University Graduate School of Engineering Science, Akita, Japan
| | - Akihiro Kitadate
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - Naoto Takahashi
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - Hiroyuki Tagawa
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
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Matsuoka J, Inuki S, Matsuda Y, Miyamoto Y, Otani M, Oka M, Oishi S, Ohno H. Front Cover: Total Synthesis of Dictyodendrins A–F by the Gold‐Catalyzed Cascade Cyclization of Conjugated Diyne with Pyrrole (Chem. Eur. J. 49/2020). Chemistry 2020. [DOI: 10.1002/chem.202002562] [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: 11/11/2022]
Affiliation(s)
- Junpei Matsuoka
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Yuka Matsuda
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Yoichi Miyamoto
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) 7-6-8 Saito-Asagi Ibaraki, Osaka 567-0085 Japan
| | - Mayumi Otani
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) 7-6-8 Saito-Asagi Ibaraki, Osaka 567-0085 Japan
| | - Masahiro Oka
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) 7-6-8 Saito-Asagi Ibaraki, Osaka 567-0085 Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
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Matsuoka J, Inuki S, Matsuda Y, Miyamoto Y, Otani M, Oka M, Oishi S, Ohno H. Total Synthesis of Dictyodendrins A-F by the Gold-Catalyzed Cascade Cyclization of Conjugated Diyne with Pyrrole. Chemistry 2020; 26:11064. [PMID: 32776584 DOI: 10.1002/chem.202002563] [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: 11/10/2022]
Abstract
Invited for the cover of this issue is Hiroaki Ohno and co-workers at Kyoto University and National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN). The image depicts gold catalysis which promotes the domino reaction to push the switch for the diversity-directed total synthesis. Read the full text of the article at 10.1002/chem.202001950.
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Affiliation(s)
- Junpei Matsuoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yuka Matsuda
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yoichi Miyamoto
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Mayumi Otani
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Masahiro Oka
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
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Kafar A, Ishii R, Gibasiewicz K, Matsuda Y, Stanczyk S, Schiavon D, Grzanka S, Tano M, Sakaki A, Suski T, Perlin P, Funato M, Kawakami Y. Above 25 nm emission wavelength shift in blue-violet InGaN quantum wells induced by GaN substrate misorientation profiling: towards broad-band superluminescent diodes. Opt Express 2020; 28:22524-22539. [PMID: 32752512 DOI: 10.1364/oe.394580] [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] [Received: 04/10/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
We report a thorough study of InGaN quantum wells spatially modified by varying the local misorientation of the GaN substrate prior to the epitaxial growth of the structure. More than 25 nm shift of emission wavelength was obtained, which is attributed to indium content changes in the quantum wells. Such an active region is promising for broadening of the emission spectrum of (In,Al,Ga)N superluminescent diodes. We observed that the light intensity changes with misorientation, being stable around 0.5° to 2° and decreasing above 2°. This relation can be used as a base for future device designing.
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Matsuoka J, Inuki S, Matsuda Y, Miyamoto Y, Otani M, Oka M, Oishi S, Ohno H. Total Synthesis of Dictyodendrins A–F by the Gold‐Catalyzed Cascade Cyclization of Conjugated Diyne with Pyrrole. Chemistry 2020; 26:11150-11157. [DOI: 10.1002/chem.202001950] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 04/30/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Junpei Matsuoka
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Yuka Matsuda
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Yoichi Miyamoto
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) 7-6-8 Saito-Asagi Ibaraki, Osaka 567-0085 Japan
| | - Mayumi Otani
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) 7-6-8 Saito-Asagi Ibaraki, Osaka 567-0085 Japan
| | - Masahiro Oka
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) 7-6-8 Saito-Asagi Ibaraki, Osaka 567-0085 Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical SciencesKyoto University Sakyo-ku Kyoto 606-8501 Japan
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Narita N, Nakanishi H, Matsuda Y, Huang M, Koizumi A, Kikuchi A, Sagehashi R, Nara T, Kanda S, Numakura K, Saito M, Inoue T, Satoh S, Habuchi T. The impact of phosphatidylinositol phosphate and its associated enzyme levels on clinical outcomes in patients with renal cell carcinoma who underwent surgery. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33913-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Matsuda Y, Machida M, Nakagami Y, Nakajima T, Azuma M. NFE2L2 activator RS9 protects against corneal epithelial cell damage in dry eye models. PLoS One 2020; 15:e0229421. [PMID: 32320433 PMCID: PMC7176120 DOI: 10.1371/journal.pone.0229421] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 02/05/2020] [Indexed: 12/26/2022] Open
Abstract
Oxidative stress may cause ocular surface damage during the development of dry eye. Mammalian cells have defense systems against oxidative stress. A central regulator of the stress response is nuclear factor-erythroid 2-related factor 2 (NFE2L2). NFE2L2 is activated by the novel triterpenoid RS9 (a biotransformation compound of RTA 402). The purpose of this study was to assess the efficacy of RS9 against dry eye using in vitro and in vivo models. Bioactivity was estimated by the induction of mRNAs for two NFE2L2-targeted genes: NQO1 (prevents radical species) and GCLC (glutathione synthesis), using a corneal epithelial cell line (HCE-T). Protection against oxidation and cell damage was tested in vitro by culturing cells under hyperosmotic stress or by the addition of menadione, a generator of reactive oxygen species (ROS). Dry eye in vivo was induced by the injection of scopolamine into rats. Then, 930 nM of RS9 was applied to both eyes for 2 weeks. Oxidative stress was measured by the accumulation of 8-hydroxy-2’-deoxyguanosine (8-OHdG). Corneal wound healing was measured by scoring for superficial punctate keratitis (SPK). Corneal epithelial cell densities were evaluated histologically. RS9 and RTA 402 induced the expression of NQO1 and GCLC mRNAs in HCE-T cells. And both compounds suppressed hyperosmotic-ROS generation and menadione induced cellular damage. However RS9 had a stronger protective effect than RTA 402. Ocular instillation of RS9 also significantly upregulated the expression of Nqo1 mRNA in the corneal epithelium. Accumulation of 8-OHdG, increase of SPK scores and decrement of basal cell density were observed in corneal epithelium from scopolamine-injected rats. These changes were significantly ameliorated by the topical administration of RS9. RS9 induced Nfe2l2 activation and Nfe2l2-targeted genes, reduced oxidation, and ameliorated symptoms of dry eye using in vitro and in vivo models. Thus, RS9 might be a potent candidate agent against dry eye disease.
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Affiliation(s)
- Yuka Matsuda
- Senju Laboratory of Ocular Sciences, Senju Pharmaceutical Co., Ltd., Kobe, Japan
| | - Mamiko Machida
- Senju Laboratory of Ocular Sciences, Senju Pharmaceutical Co., Ltd., Kobe, Japan
| | | | - Takeshi Nakajima
- Senju Laboratory of Ocular Sciences, Senju Pharmaceutical Co., Ltd., Kobe, Japan
- * E-mail:
| | - Mitsuyoshi Azuma
- Senju Laboratory of Ocular Sciences, Senju Pharmaceutical Co., Ltd., Kobe, Japan
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Kasahara S, Sato Y, Licciardello S, Čulo M, Arsenijević S, Ottenbros T, Tominaga T, Böker J, Eremin I, Shibauchi T, Wosnitza J, Hussey NE, Matsuda Y. Evidence for an Fulde-Ferrell-Larkin-Ovchinnikov State with Segmented Vortices in the BCS-BEC-Crossover Superconductor FeSe. Phys Rev Lett 2020; 124:107001. [PMID: 32216412 DOI: 10.1103/physrevlett.124.107001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/05/2020] [Indexed: 06/10/2023]
Abstract
We present resistivity and thermal-conductivity measurements of superconducting FeSe in intense magnetic fields up to 35 T applied parallel to the ab plane. At low temperatures, the upper critical field μ_{0}H_{c2}^{ab} shows an anomalous upturn, while thermal conductivity exhibits a discontinuous jump at μ_{0}H^{*}≈24 T well below μ_{0}H_{c2}^{ab}, indicating a first-order phase transition in the superconducting state. This demonstrates the emergence of a distinct field-induced superconducting phase. Moreover, the broad resistive transition at high temperatures abruptly becomes sharp upon entering the high-field phase, indicating a dramatic change of the magnetic-flux properties. We attribute the high-field phase to the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state, where the formation of planar nodes gives rise to a segmentation of the flux-line lattice. We point out that strongly orbital-dependent pairing as well as spin-orbit interactions, the multiband nature, and the extremely small Fermi energy are important for the formation of the FFLO state in FeSe.
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Affiliation(s)
- S Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502 Japan
| | - Y Sato
- Department of Physics, Kyoto University, Kyoto 606-8502 Japan
| | - S Licciardello
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, 6525 ED Nijmegen, The Netherlands
| | - M Čulo
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, 6525 ED Nijmegen, The Netherlands
| | - S Arsenijević
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
| | - T Ottenbros
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, 6525 ED Nijmegen, The Netherlands
| | - T Tominaga
- Department of Physics, Kyoto University, Kyoto 606-8502 Japan
| | - J Böker
- Institut für Theoretische Physik III, Ruhr-Universität Bochum, D-44801 Bochum, Germany
| | - I Eremin
- Institut für Theoretische Physik III, Ruhr-Universität Bochum, D-44801 Bochum, Germany
- National University of Science and Technology MISiS, 119049 Moscow, Russian Federation
| | - T Shibauchi
- Department of Advanced Materials Science, University of Tokyo, Chiba 277-8561, Japan
| | - J Wosnitza
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01062 Dresden, Germany
| | - N E Hussey
- High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, 6525 ED Nijmegen, The Netherlands
- H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL, United Kingdom
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502 Japan
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Yip KY, Ho KO, Yu KY, Chen Y, Zhang W, Kasahara S, Mizukami Y, Shibauchi T, Matsuda Y, Goh SK, Yang S. Measuring magnetic field texture in correlated electron systems under extreme conditions. Science 2019; 366:1355-1359. [DOI: 10.1126/science.aaw4278] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 11/06/2019] [Indexed: 11/02/2022]
Abstract
Pressure is a clean, continuous, and systematic tuning parameter among the competing ground states in strongly correlated electron systems such as superconductivity and magnetism. However, owing to the restricted access to samples enclosed in high-pressure devices, compatible magnetic field sensors with sufficient sensitivity are rare. We used nitrogen vacancy centers in diamond as a spatially resolved vector field sensor for material research under pressure at cryogenic temperatures. Using a single crystal of BaFe2(As0.59P0.41)2 as a benchmark, we extracted the superconducting transition temperature, the local magnetic field profile in the Meissner state, and the critical fields. The method developed in this work offers a distinct tool for probing and understanding a range of quantum many-body systems.
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Affiliation(s)
- King Yau Yip
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Kin On Ho
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - King Yiu Yu
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Yang Chen
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Wei Zhang
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - S. Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y. Mizukami
- Department of Advanced Materials Science, University of Tokyo, Kashiwa 277-8561, Japan
| | - T. Shibauchi
- Department of Advanced Materials Science, University of Tokyo, Kashiwa 277-8561, Japan
| | - Y. Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Swee K. Goh
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Sen Yang
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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Smorra C, Stadnik YV, Blessing PE, Bohman M, Borchert MJ, Devlin JA, Erlewein S, Harrington JA, Higuchi T, Mooser A, Schneider G, Wiesinger M, Wursten E, Blaum K, Matsuda Y, Ospelkaus C, Quint W, Walz J, Yamazaki Y, Budker D, Ulmer S. Direct limits on the interaction of antiprotons with axion-like dark matter. Nature 2019; 575:310-314. [DOI: 10.1038/s41586-019-1727-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/20/2019] [Indexed: 11/09/2022]
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Umehata H, Fumagalli M, Smail I, Matsuda Y, Swinbank AM, Cantalupo S, Sykes C, Ivison RJ, Steidel CC, Shapley AE, Vernet J, Yamada T, Tamura Y, Kubo M, Nakanishi K, Kajisawa M, Hatsukade B, Kohno K. Gas filaments of the cosmic web located around active galaxies in a protocluster. Science 2019; 366:97-100. [DOI: 10.1126/science.aaw5949] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 09/02/2019] [Indexed: 11/02/2022]
Affiliation(s)
- H. Umehata
- RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- Institute of Astronomy, School of Science, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
| | - M. Fumagalli
- Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
- Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
- Dipartimento di Fisica G. Occhialini, Università degli Studi di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
| | - I. Smail
- Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
| | - Y. Matsuda
- National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
- Department of Astronomy, School of Science, SOKENDAI (The Graduate University for Advanced Studies), Osawa, Mitaka, Tokyo 181-8588, Japan
| | - A. M. Swinbank
- Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
| | - S. Cantalupo
- Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
| | - C. Sykes
- Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
- Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
| | - R. J. Ivison
- European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany
- Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
| | - C. C. Steidel
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, MS 249-17, Pasadena, CA 91105, USA
| | - A. E. Shapley
- Department of Physics and Astronomy, University of California, Los Angeles, 430 Portola Plaza, Los Angeles, CA 90095, USA
| | - J. Vernet
- European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany
| | - T. Yamada
- Institute of Space and Aeronautical Science, Japanese Aerospace Exploration Agency, 3-1-1, Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
| | - Y. Tamura
- Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - M. Kubo
- National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
| | - K. Nakanishi
- National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
- Department of Astronomy, School of Science, SOKENDAI (The Graduate University for Advanced Studies), Osawa, Mitaka, Tokyo 181-8588, Japan
| | - M. Kajisawa
- Research Center for Space and Cosmic Evolution, Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577, Japan
| | - B. Hatsukade
- Institute of Astronomy, School of Science, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
| | - K. Kohno
- Institute of Astronomy, School of Science, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
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44
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Hata Y, Iida O, Asai M, Masuda M, Okamoto S, Ishihara T, Nanto K, Kanda T, Tsujimura T, Okuno S, Matsuda Y, Mano T. P4711The prognostic impact of infrapopliteal arterial calcification on wound healing in patients with critical limb ischemia. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.1092] [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
Critical limb ischemia (CLI) is the most progressed manifestation of peripheral artery disease. Although patients with CLI commonly complicate with severely calcified lesions in infrapopliteal lesions, the prognostic impact of infrapopliteal arterial calcification on wound healing in patients with CLI has not been systematically studied.
Purpose
The aim of current study was to elucidate the prognostic impact of infrapopliteal arterial calcification on wound healing in CLI undergoing endovascular therapy (EVT).
Methods
This study enrolled 639 CLI patients with tissue loss (age 74±10 years, male 62%, diabetes 69%, hemodialysis 57%, Rutherford class 5 77%, class 6 23%) primarily treated with EVT for the infrapopliteal lesions between April 2010 and December 2015. Arterial calcification was assessed by high intensity fluoroscopy and classified into 3 groups as follows; 1) none, 2) unilateral and 3) bilateral calcification. The primary outcome measure was complete wound healing. The predictors of the outcome were evaluated by Cox proportional hazards regression analysis.
Results
During a mean follow-up period of 22±19 months, 1-year wound healing rate were 59.0%. In Kaplan-Meier analysis, 1-year wound healing rate was worse in patients with bilateral calcification than in those with unilateral or none calcification (Figure, 46.2% versus 55.1% versus 67.8%, P<0.001). After multivariate analysis, the predictors of wound healing were non-ambulatory status (hazard ratio (HR) 0.67 [95% confidential interval (CI) 0.53–0.85], P=0.001) and bilateral calcification (HR 0.75 [95% CI 0.47–0.98], versus none or unilateral calcification, P=0.036).
Figure 1
Conclusion
Infrapopliteal Arterial calcification as well as non-ambulatory status was associated with wound healing in patients with CLI.
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Affiliation(s)
- Y Hata
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - O Iida
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Asai
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Masuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - S Okamoto
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Ishihara
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - K Nanto
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Kanda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Tsujimura
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - S Okuno
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - Y Matsuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Mano
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
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45
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Niida T, Yonetsu T, Lee T, Nakao M, Nakagama S, Nakamura T, Matsuda Y, Hatano Y, Sasaoka T, Umemoto T, Kakuta T, Hirao K. P6439Clinical outcomes of acute coronary syndrome with intact-fibrous cap plaque at the culprit lesions in diabetic and non-diabetic patients. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1033] [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
Previous studies revealed that the morphological substrates of the culprit lesion assessed by optical coherence tomography (OCT) in acute coronary syndrome (ACS), which includes ruptured plaque (RP) and intact fibrous cap (IFC) plaque, are associated with subsequent clinical outcomes. Nevertheless, the impact of culprit morphology on clinical outcomes has not been evaluated in patients with diabetes mellitus (DM), which is one of the major determinants of clinical prognosis.
Purpose
We sought to investigate the association of the culprit lesion morphology with clinical outcomes in patients with DM and those without DM.
Methods
We retrospectively investigated a total of 508 patients with acute myocardial infarction (AMI) experiencing their first episode of ACS in whom OCT-guided, primary percutaneous coronary intervention (PCI) was performed and a culprit lesion was observed by OCT with sufficient image quality. Patients were divided into two groups according to the culprit lesion morphology into patients with RP (RP group) and those without RP (IFC group). The rate of major adverse cardiac events (MACE) including death, myocardial infarction, target or non-target lesion revascularizations were compared between RP and IFC groups in patients with DM (DM) and those without DM (non-DM), separately.
Results
MACE was captured in 80 patients during the median follow-up of 505 (IQR 274–1300) days. In non-DM, RP group showed significantly worse MACE-free rate than in IFC group (Figure), In DM, there was no significant difference between RP and IFC groups (Figure).
Figure 1
Conclusion
Culprit lesion morphology assessed by OCT was not associated with clinical outcomes in DM patients unlike non-DM patients. Distinct strategy for secondary prevention may be required for DM patients.
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Affiliation(s)
- T Niida
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - T Lee
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - M Nakao
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - S Nakagama
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - T Nakamura
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Y Matsuda
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Y Hatano
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - T Sasaoka
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - T Umemoto
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - T Kakuta
- Tsuchiura Kyodo Hospital, cardiovascular center, Tsuchiura, Japan
| | - K Hirao
- Tokyo Medical and Dental University, Bunkyo-ku, Japan
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46
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Tsujimura T, Ishihara T, Iida O, Asai M, Masuda M, Okamoto S, Nanto K, Kanda T, Okuno S, Matsuda Y, Mano T. P3386Angioscopic comparison between polymer-free biolimus A9-coated stent and durable polymer drug-eluting stent 10 months after the implantation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0262] [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
Polymer-free biolimus A9-coated stent (DCS) has currently emerged as expected better arterial healing compared to durable polymer drug-eluting stent (DP-DES). However, superiority of DCS on arterial healing over DP-DES has not been well elucidated using intracoronary images.
Methods
This study examined 288 stents in 224 patients with de novo coronary artery lesions. We angioscopically compared 55 DCS from 35 patients with 233 DP-DES from 189 patients 10±2 months after the implantation. We assessed thrombus adhesion, which is a marker of incomplete re-endothelialization. Dominant neointimal coverage (NIC) grade, heterogeneity of NIC and maximum yellow color of plaque underneath the stent were also evaluated. Neointimal coverage was graded as follows: grade 0, stent struts exposed; grade 1, struts bulged into the lumen, although covered; grade 2, struts embedded by the neointima, but translucent; grade 3, struts fully embedded and invisible. NIC was judged as heterogeneous when differences in the NIC grade became apparent. Yellow plaque was graded as follows: grade 0, white; grade 1, light yellow; grade 2, yellow; grade 3, intensive yellow.
Results
Thrombus adhesion was similar between DCS and DP-DES (29% versus 23%, P=0.32). Dominant NIC was greater in DCS than in BP-DES (P<0.001), while NIC was more heterogeneous in DCS than in BP-DES (P=0.001, Figure). Maximum yellow color of stented segment was similar between DCS and DP-DES (P=0.09).
Conclusion
DCS provided similar thrombus adhesion to DP-DES, which suggested similar re-endothelialization 10 months after implantation. However, DCS showed thick and heterogeneous NIC compared to DP-DES. The specific feature of polymer-free and Biolimus A9 would cause the difference, and further investigation is necessary to evaluate the longer-term safety and efficacy.
Acknowledgement/Funding
None
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Affiliation(s)
- T Tsujimura
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Ishihara
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - O Iida
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Asai
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Masuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - S Okamoto
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - K Nanto
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Kanda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - S Okuno
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - Y Matsuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Mano
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
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47
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Nakagama S, Niida T, Matsuda Y, Nakamura T, Sasaoka T, Hatano Y, Umemoto T, Lee T, Yonetsu T, Hirao K. 6111Optical coherence tomography derived predictors of restenosis after non-stenting coronary intervention with drug-coated balloon. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0137] [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
Background
One of the limitations of metallic stents including contemporary drug eluting stents lies in the permanent existence of metallic materials within the coronary arteries, which may lead to neoatherosclerosis and a long-term use of dual antiplatelet therapy. Some reports have recently suggested the efficacy and safety of non-stent strategy with drug-coated balloon (DCB) angioplasty in combination with debulking devices for de novo lesions. However, little is known about the potential risk of restenosis after percutaneous coronary intervention (PCI) with DCB.
Purpose
We sought to assess the predictive factors of restenosis by optical coherence tomography (OCT) after PCI with DCB instead of metallic stents.
Methods
We retrospectively investigated 49 de novo lesions in 38 patients treated by DCB without stent implantation in whom OCT was performed immediately after PCI and follow-up angiography was performed at median of 5.6 (3.7–6.9) months. OCT findings after PCI and the incidence of restenosis at follow-up angiography were evaluated. By means of OCT images, medial coronary dissection was defined as a dissection which reached the medial layer of the vessel, and major dissection was defined as a dissection with more than 60 degrees of the circumference of the vessel or more than 3mm in length. Restenosis was defined as more than 50% diameter stenosis evaluated by Quantitative Coronary Angiography.
Results
Restenosis was observed in 13 of 49 lesions (27%). In univariate logistic regression analysis, major dissection and medial dissection at the final OCT were associated with restenosis (Odds ratio [OR] 10.0; 95% confidence interval [CI] 2.5–52.6; p<0.01 and OR 5.8; 95% CI 1.5–25.1; p=0.01, respectively). Lesion preparation prior to DCB were performed with rotational atherectomy (n=9), orbital atherectomy (n=2), directional atherectomy (n=4), excimer laser angioplasty (n=17), scoring balloon angioplasty (n=13), or balloon angioplasty (n=4). OCT-defined major dissection remained a significant predictor for restenosis independent of debulking devices used for the preparation (OR 8.1; 95% CI 1.2–70.2; p=0.03).
Conclusions
Major dissection was associated with restenosis after non-stenting PCI with DCB. Stent implantation should be considered in cases of OCT-defined major dissection.
Acknowledgement/Funding
None
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Affiliation(s)
- S Nakagama
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Niida
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - Y Matsuda
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Nakamura
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Sasaoka
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - Y Hatano
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Umemoto
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Lee
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - K Hirao
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
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48
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Kanda T, Masuda M, Asai M, Iida O, Okamoto S, Ishihara T, Nanto K, Tsujimura T, Matsuda Y, Okuno S, Mano T. P1916A novel echo-guided approach of cryoballoon ablation without using contrast medium. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0663] [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
Pulmonary vein isolation (PVI) using cryoballoon requires contrast medium injection for the confirmation of appropriate venous occlusion. However, some patients have contra-indications against contrast use such as allergy for contrast medium, bronchial asthma or renal dysfunction. We hypothesized that intra-cardiac echocardiographic observation of microbubble leakage after saline injection from the cryoballoon lumen can be used as a maker of incomplete venous occlusion.
Purpose
The aim of this study was to assess the effect of echo-guided approach using saline injection on the acute clinical outcomes as well as the amount of contrast medium.
Methods
Twenty consecutive patients with paroxysmal atrial fibrillation (AF) were studied. They had any reason to avoid using contrast medium. Plain CT scan was performed in all cases to understand the anatomical features. Intra-cardiac echocardiography was used in all cases to guide transseptal puncture and to confirm pulmonary-vein occlusion. Procedural results and clinical outcomes were compared with patients who were performed by the conventional method (n=279).
Results
In all study patients, we could perform PVI without using contrast medium. A total of 2 patients required touch-up ablation using radiofrequency ablation catheter. The procedure time (85±23 vs 86±27 min, P=0.84), the dose of radiation exposure (108±78 vs. 140±133 mmGy/m2, P=0.29), and ratio of requiring touch-up ablation (5% vs 4%, P=0.81) were similar between the study group and the reference group. There was no significant difference in the AF-free survival rate (73% vs. 76%, P=0.79) during a follow-up period of 14±6 months.
Images of ICE
Conclusion
Echo-guided approach using saline infusion was effective and less invasive in terms of reduction of contrast use.
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Affiliation(s)
- T Kanda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Masuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Asai
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - O Iida
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - S Okamoto
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Ishihara
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - K Nanto
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Tsujimura
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - Y Matsuda
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - S Okuno
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - T Mano
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
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49
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Okuno S, Ishihara T, Iida O, Asai M, Masuda M, Okamoto S, Nanto K, Kanda T, Tsujimura T, Matsuda Y, Hata Y, Uematsu H, Sato Y, Mano T. P6241Two-year clinical outcomes of biodegradable polymer versus durable polymer drug-eluting stent implantation in hemodialysis patients after percutaneous coronary intervention. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0842] [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
Biodegradable polymer drug-eluting stent (BP-DES) has been developed to improve clinical outcomes after percutaneous coronary intervention (PCI) for patients presenting coronary artery disease (CAD). Although BP-DES showed non-inferior safety and efficacy to durable polymer DES (DP-DES) in several randomized clinical trials, hemodialysis (HD) patients, who have been well known as high risk population for adverse events, were excluded in the most of trials. Therefore, there are limited data comparing the clinical outcomes between BP-DES and DP-DES in HD patients with CAD after PCI.
Purpose
The purpose of this study was to investigate clinical outcomes in HD patients after BP-DES implantation compared with those after DP-DES implantation.
Methods
We retrospectively analyzed 234 HD patients (male 74%, mean age 71±10 years) undergoing PCI for 404 lesions with 472 DESs (71 patients for 138 lesions with 170 BP-DESs [91 Ultimaster and 79 Synergy] and 163 HD patients for 266 lesions with 302 DP-DESs [219 Xience, 53 Promus and 30 Resolute]) from 2011 to 2017. Two-year clinical outcomes were compared between BP-DES group and DP-DES group. The primary outcome measure was the incidence of target lesion revascularization (TLR), while the secondary outcome measures were the occurrence of cardiac death (CD), stent thrombosis (ST), myocardial infraction (MI), target vessel revascularization (TVR), non-TVR and major adverse cardiac event (MACE) defined as a composite of CD, MI, and TVR. Outcome measures were estimated by the Kaplan-Meier method and the differences between BP-DES group and DP-DES group were assessed by the log-rank test. We also conducted Cox's proportional hazard model to identify predictors for TLR occurrence.
Results
Baseline patient and lesion characteristics were similar between the two groups. The two-year incidence of TLR was not significantly different between BP-DES group and DP-DES group (14.1% vs. 22.2%, p=0.391). The two-year incidences of CD (17.3% vs. 17.5%, p=0.381), ST (0% vs. 3.9%, p=0.133), MI (4.2% vs. 5.8%, p=0.965), TVR (21.3% vs. 27.5%, p=0.586), non-TVR (26.1% vs. 31.3%, p=0.439) and MACE (41.1% vs. 42.6%, p=0.526) were also not different between the two groups. After multivariate analysis, diabetes mellitus (hazard ratio 1.97; 95% confidence interval 1.03–3.78, p=0.004) was independently associated with TLR occurrence in HD patients.
Two-year clinical outcomes of HD patient
Conclusions
At two-year follow-up after PCI, BP-DES had comparable safety and efficacy profiles to DP-DES in HD patients presenting CAD.
Acknowledgement/Funding
None
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Affiliation(s)
- S Okuno
- Kansai Rosai Hospital, Amagasaki, Japan
| | | | - O Iida
- Kansai Rosai Hospital, Amagasaki, Japan
| | - M Asai
- Kansai Rosai Hospital, Amagasaki, Japan
| | - M Masuda
- Kansai Rosai Hospital, Amagasaki, Japan
| | - S Okamoto
- Kansai Rosai Hospital, Amagasaki, Japan
| | - K Nanto
- Kansai Rosai Hospital, Amagasaki, Japan
| | - T Kanda
- Kansai Rosai Hospital, Amagasaki, Japan
| | | | - Y Matsuda
- Kansai Rosai Hospital, Amagasaki, Japan
| | - Y Hata
- Kansai Rosai Hospital, Amagasaki, Japan
| | - H Uematsu
- Kansai Rosai Hospital, Amagasaki, Japan
| | - Y Sato
- Kansai Rosai Hospital, Amagasaki, Japan
| | - T Mano
- Kansai Rosai Hospital, Amagasaki, Japan
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50
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Nakamura T, Yonetsu T, Nakao M, Nakagama S, Niida T, Matsuda Y, Hirasawa K, Hatano Y, Sasaoka T, Umemoto T, Lee T. P5622Clinical significance of late-acquired malapposition observed by serial optical coherence tomography after second-generation drug eluting stents. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous studies have demonstrated that the presence of late-acquired stent malapposition after stent implantation may be a risk of late and very late stent thrombosis and myocardial infarction, which is however still controversial.
Purpose
We sought to investigate the incidence and prognosis of late acquired stent malapposion after second-generation drug eluting stents (2G-DES) implantation.
Methods
A total of 199 lesions in 139 patients who underwent optical coherence tomography (OCT) at both immediately after implantation (Baseline) and 6–12 months after 2G-DES implantation (follow-up) were investigated. We excluded lesions with stent failure before follow-up examination. We evaluated presence or absence of malapposed strut at 1mm interval of OCT images and stents with one or more cross-sections with >30% malapposed strut was defined as stents with malapposition (MP), otherwise well-apposed (WA). We divided the lesions into 4 groups according to the presence of malapposition at baseline and follow-up; WA and WA, persistent well-apposed; MP and WA, resoloved malapposition; WA and MP, late acquired malapposition (LAMP); and MP and MP, persistent malapposition. We compared the target lesion failure (TLF) rate after follow-up examination among 4 groups with Kaplan–Meier analysis.
Results
Median follow-up period was 469 (IQR 71–1416) days. follow-up OCT examination was performed at median 9 months (IQR 7.6–10.5). There were no significant differences in patient's and procedural characteristics among the 4 groups. TLF rate in LAMP group was 12.0% and Kaplan–Meier analysis showed no significant differences among the 4 groups in TLF rate.
TLF-free suvival curves (Kaplan-Meier)
Conclusion
LAMP was observed by OCT at 6–12 months in 12.0% of lesions after 2G-DES implantation, which was not associated with TLF at 5 years.
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Affiliation(s)
- T Nakamura
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - M Nakao
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - S Nakagama
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - T Niida
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - Y Matsuda
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - K Hirasawa
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - Y Hatano
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - T Sasaoka
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - T Umemoto
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - T Lee
- Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
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