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Uemura S, Namikawa T, Uchida K, Hanazaki K. Gastrointestinal: Giant gallbladder. J Gastroenterol Hepatol 2022; 37:2206. [PMID: 35535652 DOI: 10.1111/jgh.15858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/04/2022] [Indexed: 12/16/2022]
Affiliation(s)
- S Uemura
- Department of Surgery, Kochi Medical School, Kochi, Japan
| | - T Namikawa
- Department of Surgery, Kochi Medical School, Kochi, Japan
| | - K Uchida
- Department of Gastroenterology and Hepatology, Kochi Medical School, Kochi, Japan
| | - K Hanazaki
- Department of Surgery, Kochi Medical School, Kochi, Japan
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Ade PAR, Ahmed Z, Amiri M, Barkats D, Thakur RB, Bischoff CA, Beck D, Bock JJ, Boenish H, Bullock E, Buza V, Cheshire JR, Connors J, Cornelison J, Crumrine M, Cukierman A, Denison EV, Dierickx M, Duband L, Eiben M, Fatigoni S, Filippini JP, Fliescher S, Goeckner-Wald N, Goldfinger DC, Grayson J, Grimes P, Hall G, Halal G, Halpern M, Hand E, Harrison S, Henderson S, Hildebrandt SR, Hilton GC, Hubmayr J, Hui H, Irwin KD, Kang J, Karkare KS, Karpel E, Kefeli S, Kernasovskiy SA, Kovac JM, Kuo CL, Lau K, Leitch EM, Lennox A, Megerian KG, Minutolo L, Moncelsi L, Nakato Y, Namikawa T, Nguyen HT, O'Brient R, Ogburn RW, Palladino S, Prouve T, Pryke C, Racine B, Reintsema CD, Richter S, Schillaci A, Schwarz R, Schmitt BL, Sheehy CD, Soliman A, Germaine TS, Steinbach B, Sudiwala RV, Teply GP, Thompson KL, Tolan JE, Tucker C, Turner AD, Umiltà C, Vergès C, Vieregg AG, Wandui A, Weber AC, Wiebe DV, Willmert J, Wong CL, Wu WLK, Yang H, Yoon KW, Young E, Yu C, Zeng L, Zhang C, Zhang S. Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season. Phys Rev Lett 2021; 127:151301. [PMID: 34678017 DOI: 10.1103/physrevlett.127.151301] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
We present results from an analysis of all data taken by the BICEP2, Keck Array, and BICEP3 CMB polarization experiments up to and including the 2018 observing season. We add additional Keck Array observations at 220 GHz and BICEP3 observations at 95 GHz to the previous 95/150/220 GHz dataset. The Q/U maps now reach depths of 2.8, 2.8, and 8.8 μK_{CMB} arcmin at 95, 150, and 220 GHz, respectively, over an effective area of ≈600 square degrees at 95 GHz and ≈400 square degrees at 150 and 220 GHz. The 220 GHz maps now achieve a signal-to-noise ratio on polarized dust emission exceeding that of Planck at 353 GHz. We take auto- and cross-spectra between these maps and publicly available WMAP and Planck maps at frequencies from 23 to 353 GHz and evaluate the joint likelihood of the spectra versus a multicomponent model of lensed ΛCDM+r+dust+synchrotron+noise. The foreground model has seven parameters, and no longer requires a prior on the frequency spectral index of the dust emission taken from measurements on other regions of the sky. This model is an adequate description of the data at the current noise levels. The likelihood analysis yields the constraint r_{0.05}<0.036 at 95% confidence. Running maximum likelihood search on simulations we obtain unbiased results and find that σ(r)=0.009. These are the strongest constraints to date on primordial gravitational waves.
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Affiliation(s)
- P A R Ade
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, United Kingdom
| | - Z Ahmed
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
| | - M Amiri
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - D Barkats
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - R Basu Thakur
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - C A Bischoff
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - D Beck
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - J J Bock
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - H Boenish
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - E Bullock
- Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - V Buza
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - J R Cheshire
- Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - J Connors
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - J Cornelison
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - M Crumrine
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - A Cukierman
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - E V Denison
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - M Dierickx
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - L Duband
- Service des Basses Températures, Commissariat à l'Energie Atomique, 38054 Grenoble, France
| | - M Eiben
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - S Fatigoni
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - J P Filippini
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Astronomy, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - S Fliescher
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - N Goeckner-Wald
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - D C Goldfinger
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - J Grayson
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - P Grimes
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - G Hall
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - G Halal
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - M Halpern
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - E Hand
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - S Harrison
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - S Henderson
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
| | - S R Hildebrandt
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - G C Hilton
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - J Hubmayr
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - H Hui
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - K D Irwin
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - J Kang
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - K S Karkare
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - E Karpel
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - S Kefeli
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - S A Kernasovskiy
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - J M Kovac
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - C L Kuo
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - K Lau
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E M Leitch
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - A Lennox
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - K G Megerian
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - L Minutolo
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - L Moncelsi
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - Y Nakato
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - T Namikawa
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - H T Nguyen
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - R O'Brient
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - R W Ogburn
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - S Palladino
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - T Prouve
- Service des Basses Températures, Commissariat à l'Energie Atomique, 38054 Grenoble, France
| | - C Pryke
- Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - B Racine
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
- Aix-Marseille Université, CNRS/IN2P3, CPPM, Marseille 13288, France
| | - C D Reintsema
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - S Richter
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - A Schillaci
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - R Schwarz
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - B L Schmitt
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - C D Sheehy
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Soliman
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - T St Germaine
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - B Steinbach
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - R V Sudiwala
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, United Kingdom
| | - G P Teply
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - K L Thompson
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - J E Tolan
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - C Tucker
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, United Kingdom
| | - A D Turner
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - C Umiltà
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - C Vergès
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - A G Vieregg
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
- Department of Physics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - A Wandui
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - A C Weber
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - D V Wiebe
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - J Willmert
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - C L Wong
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - W L K Wu
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
| | - H Yang
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - K W Yoon
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - E Young
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - C Yu
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - L Zeng
- Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138, USA
| | - C Zhang
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - S Zhang
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
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Banba K, Shimizu T, Sato M, Namikawa T, Yamazaki K, Wada F, Sakai K. Intake of foods is worse in the patients with dementia with lewy bodies than alzheimer’s disease. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.537] [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]
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Shimizu T, Tamamura Y, Sato M, Banba K, Namikawa T, Nishikimi T. Frailty syndrome may be induced easily by zinc deficiency or hypoalbuminemia in the elderly people. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Adachi S, Aguilar Faúndez MAO, Akiba Y, Ali A, Arnold K, Baccigalupi C, Barron D, Beck D, Bianchini F, Borrill J, Carron J, Cheung K, Chinone Y, Crowley K, El Bouhargani H, Elleflot T, Errard J, Fabbian G, Feng C, Fujino T, Goeckner-Wald N, Hasegawa M, Hazumi M, Hill CA, Howe L, Katayama N, Keating B, Kikuchi S, Kusaka A, Lee AT, Leon D, Linder E, Lowry LN, Matsuda F, Matsumura T, Minami Y, Namikawa T, Navaroli M, Nishino H, Peloton J, Pham ATP, Poletti D, Puglisi G, Reichardt CL, Segawa Y, Sherwin BD, Silva-Feaver M, Siritanasak P, Stompor R, Tajima O, Takatori S, Tanabe D, Teply GP, Vergès C. Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment. Phys Rev Lett 2020; 124:131301. [PMID: 32302154 DOI: 10.1103/physrevlett.124.131301] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/20/2019] [Accepted: 02/26/2020] [Indexed: 06/11/2023]
Abstract
Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-mode polarization delensing on subdegree scales at more than 5σ significance. We achieve a 14% B-mode power variance reduction, the highest to date for internal delensing, and improve this result to 22% by applying for the first time an iterative maximum a posteriori delensing method. Our analysis demonstrates the capability of internal delensing as a means of improving constraints on inflationary models, paving the way for the optimal analysis of next-generation primordial B-mode experiments.
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Affiliation(s)
- S Adachi
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - M A O Aguilar Faúndez
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
- Departamento de Física, FCFM, Universidad de Chile, Blanco Encalada 2008, Santiago, Chile
| | - Y Akiba
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - A Ali
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - K Arnold
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - C Baccigalupi
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy
- Institute for Fundamental Physics of the Universe (IFPU), Via Beirut 2, 34014 Trieste, Italy
- National Institute for Nuclear Physics (INFN), via Valerio 2, 34127 Trieste, Italy
| | - D Barron
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - D Beck
- AstroParticule et Cosmologie (APC), Univ Paris Diderot, CNRS/IN2P3, CEA/Irfu, Obs de Paris, Sorbonne Paris Cité, 75013 Paris, France
| | - F Bianchini
- School of Physics, University of Melbourne, Parkville VIC 3010, Australia
| | - J Borrill
- Computational Cosmology Center, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Space Sciences Laboratory, University of California, Berkeley, California 94720, USA
| | - J Carron
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - K Cheung
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Y Chinone
- Department of Physics, University of California, Berkeley, California 94720, USA
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Berkeley Satellite, the University of California, Berkeley, California 94720, USA
| | - K Crowley
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - H El Bouhargani
- AstroParticule et Cosmologie (APC), Univ Paris Diderot, CNRS/IN2P3, CEA/Irfu, Obs de Paris, Sorbonne Paris Cité, 75013 Paris, France
| | - T Elleflot
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - J Errard
- AstroParticule et Cosmologie (APC), Univ Paris Diderot, CNRS/IN2P3, CEA/Irfu, Obs de Paris, Sorbonne Paris Cité, 75013 Paris, France
| | - G Fabbian
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - C Feng
- Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801, USA
| | - T Fujino
- Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - N Goeckner-Wald
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - M Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - M Hazumi
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Kanagawa 252-0222, Japan
| | - C A Hill
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - L Howe
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - N Katayama
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - B Keating
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - S Kikuchi
- Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - A Kusaka
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Berkeley Satellite, the University of California, Berkeley, California 94720, USA
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
- Research Center for the Early Universe, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - A T Lee
- Department of Physics, University of California, Berkeley, California 94720, USA
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Radio Astronomy Laboratory, University of California, Berkeley, California 94720, USA
| | - D Leon
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - E Linder
- Space Sciences Laboratory, University of California, Berkeley, California 94720, USA
| | - L N Lowry
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - F Matsuda
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - T Matsumura
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Minami
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Namikawa
- DAMTP, University of Cambridge, Cambridge CB3 0WA, United Kingdom
| | - M Navaroli
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - H Nishino
- Research Center for the Early Universe, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - J Peloton
- Laboratoire de l'Accélérateur Linéaire, Université Paris-Sud, CNRS/IN2P3, 91400 Orsay, France
| | - A T P Pham
- School of Physics, University of Melbourne, Parkville VIC 3010, Australia
| | - D Poletti
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy
- Institute for Fundamental Physics of the Universe (IFPU), Via Beirut 2, 34014 Trieste, Italy
- National Institute for Nuclear Physics (INFN), via Valerio 2, 34127 Trieste, Italy
| | - G Puglisi
- Department of Physics, Stanford University, Stanford, California 94305, USA
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - C L Reichardt
- School of Physics, University of Melbourne, Parkville VIC 3010, Australia
| | - Y Segawa
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - B D Sherwin
- Kavli Institute for Cosmology Cambridge, Cambridge CB3 OHA, United Kingdom
| | - M Silva-Feaver
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - P Siritanasak
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - R Stompor
- AstroParticule et Cosmologie (APC), Univ Paris Diderot, CNRS/IN2P3, CEA/Irfu, Obs de Paris, Sorbonne Paris Cité, 75013 Paris, France
| | - O Tajima
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Takatori
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - D Tanabe
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - G P Teply
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - C Vergès
- AstroParticule et Cosmologie (APC), Univ Paris Diderot, CNRS/IN2P3, CEA/Irfu, Obs de Paris, Sorbonne Paris Cité, 75013 Paris, France
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Shimizu T, Namikawa T, Banba K, Tamamura Y, Takezawa A, Nishikimi T. MON-PO530: In Fasting, BMI, Activity of Daily Living and Immunity are not Deteriorated Even when Rapid Turnover Proteins Decrease, However, Thereafter, Deteriorated with a Reduction of Serum Albumin. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32363-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ade PAR, Ahmed Z, Aikin RW, Alexander KD, Barkats D, Benton SJ, Bischoff CA, Bock JJ, Bowens-Rubin R, Brevik JA, Buder I, Bullock E, Buza V, Connors J, Cornelison J, Crill BP, Crumrine M, Dierickx M, Duband L, Dvorkin C, Filippini JP, Fliescher S, Grayson J, Hall G, Halpern M, Harrison S, Hildebrandt SR, Hilton GC, Hui H, Irwin KD, Kang J, Karkare KS, Karpel E, Kaufman JP, Keating BG, Kefeli S, Kernasovskiy SA, Kovac JM, Kuo CL, Larsen NA, Lau K, Leitch EM, Lueker M, Megerian KG, Moncelsi L, Namikawa T, Netterfield CB, Nguyen HT, O'Brient R, Ogburn RW, Palladino S, Pryke C, Racine B, Richter S, Schillaci A, Schwarz R, Sheehy CD, Soliman A, St Germaine T, Staniszewski ZK, Steinbach B, Sudiwala RV, Teply GP, Thompson KL, Tolan JE, Tucker C, Turner AD, Umiltà C, Vieregg AG, Wandui A, Weber AC, Wiebe DV, Willmert J, Wong CL, Wu WLK, Yang H, Yoon KW, Zhang C. Constraints on Primordial Gravitational Waves Using Planck, WMAP, and New BICEP2/Keck Observations through the 2015 Season. Phys Rev Lett 2018; 121:221301. [PMID: 30547645 DOI: 10.1103/physrevlett.121.221301] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/28/2018] [Indexed: 06/09/2023]
Abstract
We present results from an analysis of all data taken by the bicep2/Keck CMB polarization experiments up to and including the 2015 observing season. This includes the first Keck Array observations at 220 GHz and additional observations at 95 and 150 GHz. The Q and U maps reach depths of 5.2, 2.9, and 26 μK_{CMB} arcmin at 95, 150, and 220 GHz, respectively, over an effective area of ≈400 square degrees. The 220 GHz maps achieve a signal to noise on polarized dust emission approximately equal to that of Planck at 353 GHz. We take auto and cross spectra between these maps and publicly available WMAP and Planck maps at frequencies from 23 to 353 GHz. We evaluate the joint likelihood of the spectra versus a multicomponent model of lensed-ΛCDM+r+dust+synchrotron+noise. The foreground model has seven parameters, and we impose priors on some of these using external information from Planck and WMAP derived from larger regions of sky. The model is shown to be an adequate description of the data at the current noise levels. The likelihood analysis yields the constraint r_{0.05}<0.07 at 95% confidence, which tightens to r_{0.05}<0.06 in conjunction with Planck temperature measurements and other data. The lensing signal is detected at 8.8σ significance. Running a maximum likelihood search on simulations we obtain unbiased results and find that σ(r)=0.020. These are the strongest constraints to date on primordial gravitational waves.
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Affiliation(s)
- P A R Ade
- School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, United Kingdom
| | - Z Ahmed
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
| | - R W Aikin
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - K D Alexander
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - D Barkats
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - S J Benton
- Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
| | - C A Bischoff
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - J J Bock
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - R Bowens-Rubin
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - J A Brevik
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - I Buder
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - E Bullock
- Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - V Buza
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - J Connors
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - J Cornelison
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - B P Crill
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - M Crumrine
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Dierickx
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - L Duband
- Service des Basses Températures, Commissariat à l'Energie Atomique, 38054 Grenoble, France
| | - C Dvorkin
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - J P Filippini
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Astronomy, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - S Fliescher
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - J Grayson
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - G Hall
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Halpern
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - S Harrison
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - S R Hildebrandt
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - G C Hilton
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - H Hui
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - K D Irwin
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - J Kang
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - K S Karkare
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - E Karpel
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - J P Kaufman
- Department of Physics, University of California at San Diego, La Jolla, California 92093, USA
| | - B G Keating
- Department of Physics, University of California at San Diego, La Jolla, California 92093, USA
| | - S Kefeli
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - S A Kernasovskiy
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - J M Kovac
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - C L Kuo
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - N A Larsen
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - K Lau
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E M Leitch
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - M Lueker
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - K G Megerian
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - L Moncelsi
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - T Namikawa
- Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan
| | - C B Netterfield
- Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7, Canada
- Canadian Institute for Advanced Research, Toronto, Ontario, M5G 1Z8, Canada
| | - H T Nguyen
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - R O'Brient
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - R W Ogburn
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - S Palladino
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - C Pryke
- Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - B Racine
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - S Richter
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - A Schillaci
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - R Schwarz
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - C D Sheehy
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Soliman
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - T St Germaine
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
| | - Z K Staniszewski
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - B Steinbach
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - R V Sudiwala
- School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, United Kingdom
| | - G P Teply
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
- Department of Physics, University of California at San Diego, La Jolla, California 92093, USA
| | - K L Thompson
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - J E Tolan
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - C Tucker
- School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, United Kingdom
| | - A D Turner
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - C Umiltà
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - A G Vieregg
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
- Department of Physics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - A Wandui
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - A C Weber
- Jet Propulsion Laboratory, Pasadena, California 91109, USA
| | - D V Wiebe
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - J Willmert
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - C L Wong
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, Massachusetts 02138, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - W L K Wu
- Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - H Yang
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - K W Yoon
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - C Zhang
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
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Shimizu T, Tamamura Y, Takezawa A, Namikawa T, Banba K, Nishikimi T. Lower activity of daily living decreases serum albumin and salivary secretion which may cause aspiration pneumonia in the elderly. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1784] [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: 10/28/2022]
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Shimizu T, Namikawa T, Banba K, Nishikimi T. MON-P229: Albumin is Crucial to Live Effectively for the Elderly People. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30859-2] [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: 11/30/2022]
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Shimizu T, Namikawa T, Banba K, Nishikimi T. MON-P043: The Severity of Community Acquired Pneumonia is Strongly Assocated with Serum Albumin. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)31040-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Takahashi T, Fujitani K, Omori T, Nishikawa K, Hayashi T, Namikawa T, Otsuji E, Takiguchi S, Doki Y. 5-ALA administration for photodynamic diagnosis of peritoneal metastases due to advanced gastric cancer: A randomised, double-blind, multicentre phase I/II study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx378.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
1. The E3 ubiquitin protein ligase 1 (WWP1) gene, the mutation of which causes muscular dystrophy in chickens, is expressed not only in the pectoral muscle, but also in a number of tissues such as the kidney. Therefore, this study examined some parameters related to kidney function in muscular dystrophic (MD) chickens. 2. Plasma osmolality, Na+ and K+ concentrations, aldosterone levels, and the expression of aquaporin (AQP) 2, AQP3, and α subunits of the amiloride-sensitive epithelial sodium channel (αENaC) were analysed in the kidneys of 5-week-old MD chickens and White Leghorn (WL) chickens under physiological conditions or after one day of water deprivation. 3. Plasma osmolality, Na+ concentrations, and plasma aldosterone levels were significantly higher in MD chickens than in WL chickens. αENaC mRNA expression levels were lower in MD chickens than in WL chickens. AQP2 and AQP3 mRNA expression levels were similar in the two strains of chickens. 4. Plasma osmolality correlated with aldosterone levels and AQP2 and αENaC mRNA levels in WL chickens. In MD chickens, plasma osmolality correlated with AQP2 mRNA levels, but not with plasma aldosterone or αENaC mRNA levels. 5. These results suggest that neither water reabsorption nor the expression of AQP2 and AQP3 is impaired in MD chickens and that a WWP1 gene mutation may or may not directly induce an abnormality in Na+-reabsorption in the kidneys of MD chickens, potentially through αENaC.
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Affiliation(s)
- N Saito
- a Laboratory of Animal Physiology, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan.,b Avian Bioresource Research Center, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
| | - H Hirayama
- a Laboratory of Animal Physiology, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
| | - K Yoshimura
- a Laboratory of Animal Physiology, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
| | - Y Atsumi
- b Avian Bioresource Research Center, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
| | - M Mizutani
- b Avian Bioresource Research Center, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
| | - K Kinoshita
- b Avian Bioresource Research Center, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
| | - A Fujiwara
- c Laboratory Animal Research Station , Nippon Institute for Biological Science , Hokuto , Japan
| | - T Namikawa
- b Avian Bioresource Research Center, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
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Shimizu T, Yamaguchi T, Mizokami C, Nikaido T, Murakami N, Saito Y, Sasaki M, Banba K, Namikawa T. MON-P166: Serum Albumin May Play an Important Role to Prevent Aspiration Pneumonia by Enhancing the Secretion of Saliva. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30800-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Karkare KS, Ade PAR, Ahmed Z, Alexander KD, Amiri M, Barkats D, Benton SJ, Bischoff CA, Bock JJ, Boenish H, Bowens-Rubin R, Buder I, Bullock E, Buza V, Connors J, Filippini JP, Fliescher ST, Grayson JA, Halpern M, Harrison SA, Hilton GC, Hristov VV, Hui H, Irwin KD, Kang JH, Karpel E, Kefeli S, Kernasovskiy SA, Kovac JM, Kuo CL, Leitch EM, Lueker M, Megerian KG, Monticue V, Namikawa T, Netterfield CB, Nguyen HT, O'Brient R, Ogburn RW, Pryke CL, Reintsema CD, Richter S, St. Germaine MT, Schwarz R, Sheehy CD, Staniszewski ZK, Steinbach B, Teply GP, Thompson KL, Tolan JE, Tucker C, Turner AD, Vieregg AG, Wandui A, Weber A, Willmert J, Wong CL, Wu WLK, Yoon KW. Optical characterization of the BICEP3 CMB polarimeter at the South Pole. ACTA ACUST UNITED AC 2016. [DOI: 10.1117/12.2231747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- K. S. Karkare
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | | | | | - M. Amiri
- The Univ. of British Columbia (Canada)
| | - D. Barkats
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | - C. A. Bischoff
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | - J. J. Bock
- California Institute of Technology (United States)
| | - H. Boenish
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | - I. Buder
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | - V. Buza
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | - J. Connors
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | | | | | | | - S. A. Harrison
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | - G. C. Hilton
- National Institute of Standards and Technology (United States)
| | | | - H. Hui
- California Institute of Technology (United States)
| | | | | | | | - S. Kefeli
- California Institute of Technology (United States)
| | | | - J. M. Kovac
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | | | - M. Lueker
- California Institute of Technology (United States)
| | | | | | | | | | | | | | | | | | - C. D. Reintsema
- National Institute of Standards and Technology (United States)
| | - S. Richter
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | - R. Schwarz
- Univ. of Minnesota, Twin Cities (United States)
| | | | | | - B. Steinbach
- California Institute of Technology (United States)
| | - G. P. Teply
- California Institute of Technology (United States)
| | | | | | | | | | - A. G. Vieregg
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | | | - A. Weber
- Jet Propulsion Lab. (United States)
| | | | - C. L. Wong
- Harvard-Smithsonian Ctr. for Astrophysics (United States)
| | - W. L. K. Wu
- Univ. of California, Berkeley (United States)
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Tsuburaya A, Nishikawa K, Kobayashi M, Kawada J, Namikawa T, Fukushima R, Kojima H, Tanabe K, Yamaguchi K, Yoshino S, Takahashi M, Hirabayashi N, Sato S, Nemoto H, Rino Y, Yoshikawa T, Nakajima J, Tan P, Morita S, Sakamoto J. 198P Molecular biomarker study in randomized phase II trial of capecitabine plus cisplatin versus S-1 plus cisplatin as a first-line treatment for advanced gastric cancer: XParTS IIb. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Namikawa T, Shimizu T, Jyoko C, Hatakeyama H, Yamaoka M, Inoue K, Okumura M, Inada S, Sano K. PP148-SUN: Activities of Daily Living are Associated with Nutrition Status in the Elderly Admitted to Geriatric Health Services Facilities. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50190-2] [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: 10/24/2022]
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Shimizu T, Namikawa T, Jyoko C, Hatakeyama H, Yamaoka M, Inoue K, Oukmura M, Inada S, Sano K. PP150-SUN: Immunity and Nutritional Evaluation in the Elderly with Chronic Urinary Tract Infection. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50192-6] [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: 11/25/2022]
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Jin W, Yamada K, Ikami M, Kaji N, Tokeshi M, Atsumi Y, Mizutani M, Murai A, Okamoto A, Namikawa T, Baba Y, Ohta M. P18 Application of IgY to ELISA, LFDs, and immunopillar chips for detecting staphylococcal enterotoxins in milk and dairy products. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70263-2] [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: 11/27/2022]
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Namikawa T, Iwabu J, Kitagawa H, Okabayashi T, Kobayashi M, Hanazaki K. Solitary gastric metastasis from a renal cell carcinoma, presenting 23 years after radical nephrectomy. Endoscopy 2012; 44 Suppl 2 UCTN:E177-8. [PMID: 22622731 DOI: 10.1055/s-0031-1291751] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- T Namikawa
- Department of Surgery, Kochi Medical School, Nankoku, Japan.
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Yamatsuji T, Fujiwara Y, Matsumoto H, Hato S, Namikawa T, Hanazaki K, Ninomiya M, Fujiwara T, Hirai T, Naomoto Y. Feasibility of Oral Administration of S-1 for Adjuvant Chemotherapy of Gastric Cancer; 4-week S-1 Administration followed by 2-week rest vs. 2-week Administration followed by 1-Week Rest. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33341-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Namikawa T, Iwabu J, Tsujii S, Kitagawa H, Kobayashi M, Hanazaki K. Education and imaging. Gastrointestinal: asymptomatic spontaneous isolated dissection of superior mesenteric artery diagnosed incidentally. J Gastroenterol Hepatol 2011; 26:1811. [PMID: 22097940 DOI: 10.1111/j.1440-1746.2011.06936.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- T Namikawa
- Department of Surgery, Kochi Medical School, Kochi, Japan
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Tochika N, Namikawa T, Kamiji I, Kitamura M, Okamoto K, Hanazaki K. Subcutaneous continuous suction drainage for prevention of surgical site infection. J Hosp Infect 2011; 78:67-8. [PMID: 21421275 DOI: 10.1016/j.jhin.2011.01.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 01/19/2011] [Indexed: 02/05/2023]
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Dorji T, Mannen H, Namikawa T, Inamura T, Kawamoto Y. Diversity and phylogeny of mitochondrial DNA isolated from mithun Bos frontalis located in Bhutan. Anim Genet 2011; 41:554-6. [PMID: 20331596 DOI: 10.1111/j.1365-2052.2010.02033.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We sequenced the 16S rRNA gene in mitochondrial DNA to characterize mithun located in Bhutan and to increase our understanding of its origin. We compared mithun with yak, European cattle, Bhutanese zebu and Indian zebu. Sequencing revealed low nucleotide diversity within the mithun population and their phylogenetic proximity to gaur. A close relationship between Bhutanese mithun and gaur was confirmed by an additional comparison with wild gaur specimens from three locations in Bhutan. Direct domestication of mithun from gaur was supported, while maternal contribution from the cattle lineage during domestication was not supported.
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Affiliation(s)
- T Dorji
- Department of Livestock, Ministry of Agriculture, Royal Government of Bhutan, Thimphu, Bhutan
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Namikawa T, Ito S, Amano T. Genetic relationships and phylogeny of East and Southeast Asian cattle: genetic distance and principal component analyses. ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.1439-0388.1984.tb00019.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Namikawa T. Geographic distribution of bovine Hemoglobin-beta (Hbb) alleles and the phylogenetic analysis of the cattle in Eastern Asia. ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.1439-0388.1981.tb00338.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kakoi H, Namikawa T, Takenaka O, Takenaka A, Amano T, Martojo H. Divergence between the Anoas of Sulawesi and the Asiatic Water buffaloes, inferred from their complete amino acid sequences of hemoglobin ß chains. J ZOOL SYST EVOL RES 2009. [DOI: 10.1111/j.1439-0469.1994.tb00466.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Namikawa T, Nagai A, Takenaka O, Takenaka A. Bovine haemoglobin beta A Zebu, beta A43(CD3)Ser----Thr: an intermediate globin type between the beta A and beta D Zambia is present in Indian zebu cattle. Anim Genet 2009; 18:133-41. [PMID: 3662113 DOI: 10.1111/j.1365-2052.1987.tb00752.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two bovine haemoglobin beta chains, electrophoretically identical with the beta A chain of Herefords, were obtained from Ongole and Banteng, Bos javanicus, cattle. The amino acid residue differences of the two beta chains were compared by electrophoresis, cation-exchange and reverse-phase chromatography, amino acid analyses, and Edman degradation in comparison with beta A chain. The results showed that two beta chains differed from the beta A chain of the Hereford breed by the substitution of serine with threonine at the beta 43 position. No other difference was found between the two chains and beta A. This new beta chain type was termed beta A Zebu, which forms a possible evolutionarily transitional type between the beta A and the rare variant beta D Zambia found previously in African zebu cattle. The beta A Zebu differentiates from the previous beta B by at least four amino acid substitutions involving five codon-base changes.
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Affiliation(s)
- T Namikawa
- Laboratory of Animal Genetics, Faculty of Agriculture, Nagoya University, Japan
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Valdez MB, Mizutani M, Kinoshita K, Fujiwara A, Yazawa H, Yamagata T, Shimada K, Namikawa T. 112. DIFFERENTIAL DEVELOPMENT OF SEX-RELATED CHARACTERS OF THE GSP AND PNP/DO CHICKENS AFTER LEFT-OVARIECTOMY. Reprod Fertil Dev 2009. [DOI: 10.1071/srb09abs112] [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: 11/23/2022] Open
Abstract
To elucidate the strain difference in the sex reversal of genetic female to phenotypic male, GSP and PNP/DO females were left ovariectomized (ovx) between one day to three days after hatching and the degree of masculinization based on sex-related characters, histological analysis of the right gonad and hormone assay were assessed at one year of age. The GSP and PNP/DO inbred lines were both derived from the Fayoumi breed and are only differentiated based on red blood cell antigens type carried by each of the inbred line. Comb and wattles were found to be significantly bigger (P < 0.05) in the GSP ovx compared to the PNP/DO ovx, although male plumage pattern were more pronounced in the PNP/DO ovx. Spurs were observed both in the GSP and PNP/DO ovx with no significant difference (P > 0.05) in length to the respective male controls and body weight were not significantly different (P > 0.05) to the female controls. The size of the right gonad were significantly bigger (P < 0.05) in the GSP ovx than the PNP/DO ovx. Positive correlations were found in the sex related characters as well as plasma testosterone level and the right gonad weight both in the GSP and PNP/DO ovx except for the spur length which resulted into a negative correlation in the PNP/DO ovx. Histological analysis revealed that the right gonad of PNP/DO ovx are morphologically developed compared to GSP ovx showing more advance stages of spermatogenesis. It could be inferred that PNP/DO females which exhibit hereditary persistent right oviduct, are more responsive to the masculinizing effect of ovariectomy compared to GSP females, suggesting that genetic background may have a possible contribution on the degree of masculinization and subsequent development of sex related characters.
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Tadano R, Nishibori M, Imamura Y, Matsuzaki M, Kinoshita K, Mizutani M, Namikawa T, Tsudzuki M. High genetic divergence in miniature breeds of Japanese native chickens compared to Red Junglefowl, as revealed by microsatellite analysis. Anim Genet 2008; 39:71-8. [DOI: 10.1111/j.1365-2052.2007.01690.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Shimada K, Valdez MB, Mizutani M, Namikawa T. Potential application of sperm bearing female-specific chromosome in chickens. Cytogenet Genome Res 2007; 117:240-7. [PMID: 17675865 DOI: 10.1159/000103185] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2006] [Accepted: 09/10/2006] [Indexed: 11/19/2022] Open
Abstract
This paper reviews studies on sex reversal experiments in chickens, production of sperm bearing a female-specific chromosome, its application for poultry resources and finally a mechanism of sex differentiation of gonads in the chicken.
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Affiliation(s)
- K Shimada
- Division of Applied Genetics and Physiology, Graduate School of Bioagricultural Science, Nagoya University Chikusa, Nagoya, Japan.
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Kobayashi M, Ichikawa K, Okamoto K, Namikawa T, Okabayashi T, Araki K. Laparoscopic incisional hernia repair. A new mesh fixation method without stapling. Surg Endosc 2006; 20:1621-5. [PMID: 16897287 DOI: 10.1007/s00464-005-0585-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2005] [Accepted: 04/03/2006] [Indexed: 02/08/2023]
Abstract
BACKGROUND Recent advances in laparoscopic surgery have made various abdominal surgeries possible. To avoid wound infection, mesh repair of abdominal incisional hernias is performed laparoscopically. Here we present a new procedure to fix mesh to the abdominal wall. SURGICAL TECHNIQUE Four anchoring sutures are made using a suture-grasping device; the additional transabdominal sutures are then made with a modified double-needle device. Additional circumferential fixation with tacks is not necessary. CONCLUSIONS This new mesh fixation method involves simple suturing techniques and is less time consuming than the conventional procedure.
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Affiliation(s)
- M Kobayashi
- Department of Tumor Surgery, Kochi Medical School, Oko-cho, Nankoku, 783-8505, Japan
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Kobayashi M, Okamoto K, Namikawa T, Okabayashi T, Araki K. Laparoscopic lymph node dissection around the inferior mesenteric artery for cancer in the lower sigmoid colon and rectum: is D3 lymph node dissection with preservation of the left colic artery feasible? Surg Endosc 2005; 20:563-9. [PMID: 16391959 DOI: 10.1007/s00464-005-0160-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2005] [Accepted: 07/19/2005] [Indexed: 02/08/2023]
Abstract
BACKGROUND When we perform laparoscopic lymph node dissection around the inferior mesenteric artery (IMA), we preserve the left colic artery (LCA) to maintain the blood supply to the proximal sigmoid colon. In this study, we present our laparoscopic D2 and D3 lymph node (LN) dissection technique and evaluate its applicability and safety. METHODS We performed LN dissection on 23 rectal and lower sigmoid colon cancer cases from April 2002 to December 2004. For D3 LN dissection, the incision to the mesosigmoid extends to just before the root of the IMA, which is exposed with an ultrasonic cutting and coagulating surgical device to avoid bleeding. Then, the arterial wall is exposed with a dissecting electrocautery spatula down to the LCA, at least 2 cm of which is exposed. Adipose tissue surrounding the IMA and inferior mesenteric vein is dissected. For D2 LN dissection, we partially expose the IMA to confirm the location of the LCA. RESULTS The mean times taken for D2 and D3 LN dissections were 36.2 and 68.2 min, respectively. Both procedures took longer in male patients. There was a trend for the procedure overall to take less time in female patients. However, D2 dissection took significantly longer in male than female patients (p < 0.05). In women, D3 dissection took significantly longer than D2 (p < 0.05), but this trend was not seen in men. Increased experience among surgeons with this procedure was associated with significantly faster LN dissections in men (p < 0.05), but not in women (p = 0.493). Pearson product moment analysis identified a relationship between body mass index (BMI) and the time taken for D2 LN dissection (r = 0.765), but not D3 LN dissection (r = 0.158). There was no treatment-related morbidity with this technique. CONCLUSIONS This method was safe and feasible for all patients in this series, but takes longer to perform in male patients.
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Affiliation(s)
- M Kobayashi
- Department of Tumor Surgery, Kochi Medical School, Nankoku, Kochi, 783-8505, Japan.
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Kuroiwa A, Yokomine T, Sasaki H, Tsudzuki M, Tanaka K, Namikawa T, Matsuda Y. Biallelic expression of Z-linked genes in male chickens. Cytogenet Genome Res 2004; 99:310-4. [PMID: 12900580 DOI: 10.1159/000071609] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2002] [Accepted: 12/19/2002] [Indexed: 11/19/2022] Open
Abstract
In birds, females are heterogametic (ZW), while males are homogametic (ZZ). It has been proposed that there is no dosage compensation for the expression of Z-linked genes in birds. In order to examine if the genes are inactivated on one of the two Z chromosomes, we analyzed the allelic expression of the B4GALT1 and CHD-Z genes on Z chromosomes in male chickens. One base substitution was detected among 15 chicken breeds and lines examined for each gene, and cross mating was made between the breeds or lines with polymorphism. cDNAs were synthesized from cultured cell colonies each derived from a single cell of an F1 male embryo. The allelic expression of the B4GALT1 gene was examined by restriction fragment length polymorphism analysis of the PCR products digested with RSAI, and that of the CHD-Z gene by the single nucleotide primer extension (SNuPE) method. Both of the genes displayed biallelic expression, suggesting that these Z-linked genes were not subject to inactivation in male chickens. Comparison between expression levels in males and females by real-time quantitative PCR suggested that expression was compensated for the CHD-Z gene but not for the B4GALT1 gene.
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Affiliation(s)
- A Kuroiwa
- Laboratory of Animal Cytogenetics, Center for Advanced Science and Technology, Hokkaido University, Sapporo, Japan.
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Kikkawa Y, Takada T, Nomura K, Namikawa T, Yonekawa H, Amano T. Phylogenies using mtDNA and SRY provide evidence for male-mediated introgression in Asian domestic cattle. Anim Genet 2003; 34:96-101. [PMID: 12648092 DOI: 10.1046/j.1365-2052.2003.00956.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Using nucleotide sequences of the mitochondrial DNA (mtDNA) cytochrome b and SRY genes, we examined the genetic status of two major groups of domestic cattle, the humpless taurine (Bos taurus) and humped zebu (B. indicus), using 10 cattle populations in Asia. Several sequence polymorphisms specific for each major group were found, although the frequency of these polymorphisms varied in each population. Six major mtDNA-SRY composite types were observed. The Mishima, Mongolian, Korean, Chinese Yellow and Sri Lanka cattle populations had a full match between the mtDNA and SRY sequences, specifically the taurine/taurine type or zebu/zebu type. A non-match type (zebu/taurine type) was found at a high frequency in the Bangladesh (83.4%) and Nepal populations (83.3%). Our results suggest that these non-match type populations developed from genetic hybridization of different strains. Also, the domestication history of modern Asian domestic cattle could be explained by male-mediated introgression. Additionally, our results suggest the occurrence of introgression of mtDNA from other Bibos or Poephagus species into native cattle populations. The existence of other mtDNA-SRY composite types, such as the Bali-zebu and yak-zebu types in Indonesia (85.7%) and Nepal (16.7%), respectively, suggests that genetic introgression also occurred from other genera into domestic cattle during the process of domestication.
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Affiliation(s)
- Y Kikkawa
- Department of Laboratory Animal Science, The Tokyo Metropolitan Institute of Medical Science, Tokyo 113-8613, Japan
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Kuroiwa A, Tsuchiya K, Matsubara K, Namikawa T, Matsuda Y. Construction of comparative cytogenetic maps of the Chinese hamster to mouse, rat and human. Chromosome Res 2002; 9:641-8. [PMID: 11778687 DOI: 10.1023/a:1012952223509] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We constructed comparative cytogenetic maps of the Chinese hamster to mouse, rat and human by fluorescence in-situ hybridization using 36 cDNA clones of mouse, rat, Syrian hamster, Chinese hamster and human functional genes. In this study, 30 out of the 36 genes were newly mapped to Chinese hamster chromosomes. The chromosomal homology of the Chinese hamster was identified and arranged in 19, 19 and 18 segments of conserved synteny in mouse, rat and human, respectively. Additionally, two of the 19 segments homologous to mouse chromosomes were initially identified in this study.
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Affiliation(s)
- A Kuroiwa
- Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Shibusawa M, Minai S, Nishida-Umehara C, Suzuki T, Mano T, Yamada K, Namikawa T, Matsuda Y. A comparative cytogenetic study of chromosome homology between chicken and Japanese quail. Cytogenet Genome Res 2002; 95:103-9. [PMID: 11978979 DOI: 10.1159/000057026] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In order to construct a chicken (Gallus gallus) cytogenetic map, we isolated 134 genomic DNA clones as new cytogenetic markers from a chicken cosmid DNA library, and mapped these clones to chicken chromosomes by fluorescence in situ hybridization. Forty-five and 89 out of 134 clones were localized to macrochromosomes and microchromosomes, respectively. The 45 clones, which localized to chicken macrochromosomes (Chromosomes 1-8 and the Z chromosome) were used for comparative mapping of Japanese quail (Coturnix japonica). The chromosome locations of the DNA clones and their gene orders in Japanese quail were quite similar to those of chicken, while Japanese quail differed from chicken in chromosomes 1, 2, 4 and 8. We specified the breakpoints of pericentric inversions in chromosomes 1 and 2 by adding mapping data of 13 functional genes using chicken cDNA clones. The presence of a pericentric inversion was also confirmed in chromosome 8. We speculate that more than two rearrangements are contained in the centromeric region of chromosome 4. All 30 clones that mapped to chicken microchromosomes also localized to Japanese quail microchromosomes, suggesting that chromosome homology is highly conserved between chicken and Japanese quail and that few chromosome rearrangements occurred in the evolution of the two species.
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Affiliation(s)
- M Shibusawa
- Laboratory of Cytogenetics, Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Bastian ST, Tanaka K, Anunciado RVP, Natural NG, Sumalde AC, Namikawa T. Evolutionary relationships of flying foxes (genus Pteropus) in the Philippines inferred from DNA sequences of cytochrome b gene. Biochem Genet 2002; 40:101-16. [PMID: 12017505 DOI: 10.1023/a:1015161305843] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Six flying fox species, genus Pteropus (four from the Philippines) were investigated using complete cytochrome b gene sequences (1140 bp) to infer their evolutionary relationships. The DNA sequences generated via polymerase chain reaction were analyzed using the neighbor-joining, parsimony, and maximum likelihood methods. We estimated that the first evolutionary event among these Pteropus species occurred approximately 13.90 +/- 1.49 MYA. Within this short period of evolutionary time we further hypothesized that the ancestors of the flying foxes found in the Philippines experienced a subsequent diversification forming two clusters in the topology. The first cluster is composed of P. pumilus (Philippine endemic), P. speciosus (restricted in western Mindanao) with P. scapulatus, while the second one comprised P. vampyrus and P. dasymallus species based on the analysis from first and second codon positions. Consistently, all phylogenetic analyses divulged close association of P. dasymallus with P. vampyrus contradicting the previous report categorizing P. dasymallus under subniger species group with P. pumilus. P. speciosus, and P. hypomelanus. The Philippine endemic species (P. pumilus) is closely linked with P. speciosus. The representative samples of P. vampyrus showed a large genetic distance of 1.87%. The large genetic distance between P. dasymallus and P. hypomelanus, P. pumilus and P. speciosus denotes a distinct species group.
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Affiliation(s)
- S T Bastian
- Laboratory of Animal Genetics, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Japan
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Matsubara K, Ishikawa A, Kuroiwa A, Nagase T, Nomura N, Namikawa T, Matsuda Y. Comparative FISH mapping of human cDNA clones to chromosomes of the musk shrew (Suncus murinus, Insectivora). Cytogenet Cell Genet 2001; 93:258-62. [PMID: 11528122 DOI: 10.1159/000056994] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Forty-one cDNA clones of human functional genes were newly mapped to chromosomes of the musk shrew (Suncus murinus, Insectivora) by fluorescence in situ hybridization, and a comparative cytogenetic map of 51 genes, including 10 genes reported in our previous study, was constructed between human (HSA) and musk shrew (SMU) chromosomes. In this comparative map, the 51 genes localized to human autosomes, except HSA 8, 16, and 20, were mapped to 15 shrew autosomes, except SMU 4, 16, 17 and 18. Twelve conserved segments were identified between human and shrew chromosomes, and six segments among the musk shrew, human, and mouse. Our results defined the presence of at least one inversion and several interchromosomal rearrangements that occurred during evolution after the two species diverged from a common ancestor. Localization of three major histocompatibility complex (MHC) genes to shrew chromosome 3 suggested that the MHC genes of the musk shrew are located in a cluster on chromosome 3. The cytogenetic map constructed in this study is the first cytogenetic map with many functional genes in insectivore species. This approach provides clues for clarifying the chromosomal evolution in this order.
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Affiliation(s)
- K Matsubara
- Laboratory of Cytogenetics, Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Ohno T, Kitoh J, Tanaka S, Nishimura M, Namikawa T. Diabetic cataract of the musk shrew (Suncus murinus, Insectivora) exhibiting spontaneous non-insulin dependent diabetes mellitus (NIDDM). Exp Anim 2001; 50:431-3. [PMID: 11769547 DOI: 10.1538/expanim.50.431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The EDS colony, developed as a new laboratory colony of the musk shrew, is characterized by a high incidence of early-onset spontaneous non-insulin dependent diabetes mellitus (NIDDM). In this colony, a few diabetic shrews exhibited a cataract at 1 month after the onset of diabetes, and all diabetic shrews had bilateral cataracts at 5 months after the onset of diabetes. In contrast, cataractous animals were never observed among non-diabetic shrews. These results suggest that the cataract in the EDS colony is a diabetic complication.
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Affiliation(s)
- T Ohno
- Institute for Laboratory Animal Research, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
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Ohno T, Horio F, Kitoh J, Tanaka S, Nishimura M, Namikawa T. Blood and liver lipid concentrations in EDS shrews exhibiting spontaneous non-insulin dependent diabetes mellitus (NIDDM). Exp Anim 2001; 50:427-9. [PMID: 11769546 DOI: 10.1538/expanim.50.427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The EDS (early-onset diabetes in suncus) colony was developed as a new laboratory colony of the musk shrew and is characterized by a high incidence of early-onset spontaneous non-insulin dependent diabetes mellitus (NIDDM). We examined blood lipid (triglyceride [TG], total cholesterol [TC], phospholipid [PL], free fatty acid [FFA]) and liver lipid (TG, TC, PL) concentrations to investigate the features of lipid metabolism in these animals. All lipid concentrations examined both in blood and liver of the diabetic shrews had a tendency toward higher values than those in non-diabetic shrews. The PL concentration was the only parameter that barely showed a significant difference. Values for all blood lipid concentrations in diabetic shrews at 7-9 months tended to be higher than those of 2-month-old diabetic shrews, although the difference was not significant. These findings indicate that diabetic EDS shrews exhibit a much milder defect of lipid metabolism induced by NIDDM than other rodent models.
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Affiliation(s)
- T Ohno
- Institute for Laboratory Animal Research, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
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Anunciado RV, Nishimura M, Mori M, Ishikawa A, Tanaka S, Horio F, Ohno T, Namikawa T. Quantitative trait loci for body weight in the intercross between SM/J and A/J mice. Exp Anim 2001; 50:319-24. [PMID: 11515095 DOI: 10.1538/expanim.50.319] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We performed a genome-wide quantitative trait locus (QTL) analysis of body weight at 10 weeks of age in a population of 321 intercross offspring from SM/J and A/J mice, progenitor strains of SMXA recombinant inbred strains. Interval mapping revealed two significant QTLs, Bwq3 (body weight QTL3) and Bwq4, on Chromosomes (Chrs) 8 and 18 respectively, and five suggestive QTLs on Chrs 2, 6, 7, 15 and 19. Bwq3 and Bwq4 explained 6% of the phenotypic variance. The SM/J alleles at both QTLs increased body weight, though the SM/J mouse was smaller than the A/J mouse. On the other hand, four of the five suggestive QTLs detected had male-specific effects on body weight and the remainder was female-specific. These suggestive QTLs explained 5-6% of the phenotypic variance and all the SM/J alleles decreased body weight.
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Affiliation(s)
- R V Anunciado
- Laboratory of Animal Genetics, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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Ikeda H, Kato K, Kitani H, Suzuki T, Yoshida T, Inaguma Y, Yamamoto N, Suh JG, Hyun BH, Yamagata T, Namikawa T, Tomita T. Virological properties and nucleotide sequences of Cas-E-type endogenous ecotropic murine leukemia viruses in South Asian wild mice, Mus musculus castaneus. J Virol 2001; 75:5049-58. [PMID: 11333885 PMCID: PMC114909 DOI: 10.1128/jvi.75.11.5049-5058.2001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two types of endogenous ecotropic murine leukemia viruses (MuLVs), termed AKV- and Cas-E-type MuLVs, differ in nucleotide sequence and distribution in wild mouse subspecies. In contrast to AKV-type MuLV, Cas-E-type MuLV is not carried by common laboratory mice. Wild mice of Mus musculus (M. m.) castaneus carry multiple copies of Cas-E-type endogenous MuLV, including the Fv-4(r) gene that is a truncated form of integrated MuLV and functions as a host's resistance gene against ecotropic MuLV infection. Our genetic cross experiments showed that only the Fv-4(r) gene was associated with resistance to ecotropic F-MuLV infection. Because the spontaneous expression of infectious virus was not detected in M. m. castaneus, we generated mice that did not carry the Fv-4(r) gene but did carry a single or a few endogenous MuLV loci. In mice not carrying the Fv-4(r) gene, infectious MuLVs were isolated in association with three of six Cas-E-type endogenous MuLV loci. The isolated viruses showed a weak syncytium-forming activity for XC cells, an interfering property of ecotropic MuLV, and a slight antigenic variation. Two genomic DNAs containing endogenous Cas-E-type MuLV were cloned and partially sequenced. All of the Cas-E-type endogenous MuLVs were closely related, hybrid-type viruses with an ecotropic env gene and a xenotropic long terminal repeat. Duplications and a deletion were found in a restricted region of the hypervariable proline-rich region of Env glycoprotein.
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Affiliation(s)
- H Ikeda
- National Institute of Animal Health, Tsukuba, Ibaraki-ken, Japan.
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Kuroiwa A, Tsuchiya K, Watanabe T, Hishigaki H, Takahashi E, Namikawa T, Matsuda Y. Conservation of the rat X chromosome gene order in rodent species. Chromosome Res 2001; 9:61-7. [PMID: 11272793 DOI: 10.1023/a:1026795717658] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We constructed the comparative cytogenetic maps of X chromosomes in three rodent species, Indian spiny mouse (Mus platythrix), Syrian hamster and Chinese hamster, using 26 mouse cDNA clones. Twenty-six, 22 and 22 out of the 26 genes, which were mapped to human, mouse and rat X chromosomes in our previous study, were newly localized to X chromosomes of Indian spiny mouse, and Syrian and Chinese hamsters, respectively. The order of the genes aligned on the long arm of human X chromosome was highly conserved in rat and the three rodent species except mouse. The present results suggest a possibility that the rat X chromosome retains the ancestral form of the rodent X chromosomes.
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Affiliation(s)
- A Kuroiwa
- Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Kuroiwa A, Matsubara K, Nagase T, Nomura N, Seong JK, Ishikawa A, Anunciado RV, Tanaka K, Yamagata T, Masangkay JS, Dang VB, Namikawa T, Matsuda Y. Chromosomal mapping of 18S-28S rRNA genes and 10 cDNA clones of human chromosome 1 in the musk shrew (Suncus murinus). J Hered 2001; 92:282-7. [PMID: 11447248 DOI: 10.1093/jhered/92.3.282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The direct R-banding fluorescence in situ hybridization (FISH) method was used to map 18S-28S ribosomal RNA genes and 10 human cDNA clones on the chromosomes of the musk shrew (Suncus murinus). The chromosomal locations of 18S-28S ribosomal RNA genes were examined in the five laboratory lines and wild animals captured in the Philippines and Vietnam, and the genes were found on chromosomes 5, 6, 9, and 13 with geographic variation. The comparative mapping of 10 cDNA clones of human chromosome 1 demonstrated that human chromosome 1 consisted of at least three segments homologous to Suncus chromosomes (chromosomes 7, 10, and 14). This approach with the direct R-banding FISH method is useful for constructing comparative maps between human and insectivore species and for explicating the process of chromosomal rearrangements during the evolution of mammals.
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MESH Headings
- Animals
- Brain
- Chromosome Banding
- Chromosome Mapping
- Chromosomes, Human, Pair 1/genetics
- Chromosomes, Human, Pair 10/genetics
- Chromosomes, Human, Pair 14/genetics
- Chromosomes, Human, Pair 7/genetics
- DNA Probes
- DNA, Complementary/genetics
- Heterozygote
- Humans
- In Situ Hybridization, Fluorescence/methods
- RNA, Ribosomal, 18S/genetics
- RNA, Ribosomal, 28S/genetics
- Shrews/genetics
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Affiliation(s)
- A Kuroiwa
- Laboratory of Animal Genetics, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
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Suzuki T, Ishikawa A, Yoshimura T, Namikawa T, Abe H, Honma S, Honma K, Ebihara S. Quantitative trait locus analysis of abnormal circadian period in CS mice. Mamm Genome 2001; 12:272-7. [PMID: 11309657 DOI: 10.1007/s003350010280] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2000] [Accepted: 12/05/2000] [Indexed: 11/25/2022]
Abstract
CS mice show a free-running period (tau) longer than 24 h and rhythm splitting in constant darkness (DD). These features in behavioral circadian rhythms are distinctive as compared with other inbred strains of mice, which exhibit robust free-running rhythms with T shorter than 24 h. To identify the genes affecting tau, quantitative trait locus (QTL) analysis was initially conducted by using 289 F2 mice derived from a cross between CS and C57BL/6J strain. A suggestive QTL (LOD = 3.71) with CS allele increasing tau was detected on the distal region of Chromosome (Chr) 19. Next, using 192 F2 mice from a cross between CS and MSM strain, the presence of the QTL on Chr 19 was examined, and we confirmed the QTL at the genome-wide significant level (LOD = 4.61 with 10.4% of the total variance explained). This QTL was named long free-running period (Lfp). Three other suggestive QTLs (LOD = 3.24-4.28) were mapped to the midportion of Chr 12 in (CSxC57BL/6J)F2 mice, and to the proximal and middle region of Chr 19 in (CSxMSM)F2 mice, respectively, of which, CS alleles for two QTLs on Chr 19 have the effect of lengthening tau. None of these QTLs were mapped to the chromosomal regions of previously described QTLs for tau and known clock genes (Clock, mPer1, Bmal1, mCrv1, mCry2, mTim, and Csnk1e).
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Affiliation(s)
- T Suzuki
- Division of Biomodeling, Graduate School of Bioagricultural Sciences, Nagoya University, Japan
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Abstract
A new Robertsonian translocation, rob(2;28), was discovered in a local population of the Vietnamese Cattle. The animal (2n = 59, XY) was found by Q- and R-banding to be a heterozygous carrier of a centric fusion translocation involving chromosomes 2 and 28. FISH analysis using a bovine satellite I DNA probe demonstrated that the centromeric heterochromatin block of the rob(2;28) chromosome become much smaller than its ancestors suggesting a monocentric nature of this centric fusion. This is the first report identifying a Robertsonian translocation in Southeast Asian cattle by karyotyping of banded chromosomes.
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Affiliation(s)
- K Tanaka
- Laboratory of Animal Genetics, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Japan.
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Aso S, Ishikawa A, Wakana S, Baba R, Fujita M, Namikawa T. The eye lens aplasia (elap) maps to mouse chromosome 2. Exp Anim 2001; 50:97-8. [PMID: 11326432 DOI: 10.1538/expanim.50.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
- S Aso
- Laboratory of Animal Genetics, Division of Applied Genetics and Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
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Tatsumi R, Hamada K, Sekiya S, Wakamatsu M, Namikawa T, Mizutani M, Sokawa Y. 2',5'-oligoadenylate synthetase gene in chicken: gene structure, distribution of alleles and their expression. Biochim Biophys Acta 2000; 1494:263-8. [PMID: 11121584 DOI: 10.1016/s0167-4781(00)00174-3] [Citation(s) in RCA: 23] [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] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have cloned the gene for chicken 2',5'-oligoadenylate synthetase (ChOAS) by the method of polymerase chain reaction with use of ChOAS cDNA sequence. The ChOAS gene is composed of five introns and six exons containing all of the sequence of the ChOAS cDNA from the start to the stop codon. The first five exons of ChOAS gene which encode the OAS catalytic domain have a similar structure to HuOAS1 gene including the exon-intron boundaries. However, the length of introns of ChOAS gene is only 1/7 of those of HuOAS1 gene. The sixth exon of the ChOAS gene encodes the ubiquitin-like (UbL) domain of two consecutive sequence (UbL1 and UbL2) homologous to ubiquitin. ChOAS encoded in a single copy gene has at least two alleles, OAS(*)A and OAS(*)B. The differences between these two alleles are in the sixth exon of the gene; a 96-nucleotide sequence in the UbL1 portion of OAS(*)A is deleted from OAS(*)B. No OAS(*)B gene was detected in nine lines of chickens tested other than Leghorns. Almost the same levels of ChOAS-A and -B proteins induced physiologically in erythrocytes were detected in infant chickens (2-week-old), but in grown-up chickens (6-month-old) the level of erythrocyte OAS-B was markedly reduced in most of B/B chickens. Thus, the UbL domain of ChOAS is responsible for the maintenance of the OAS level in the tissue.
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Affiliation(s)
- R Tatsumi
- Department of Biotechnology, Kyoto Institute of Technology, Japan
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Suzuki T, Ishikawa A, Nishimura M, Yoshimura T, Namikawa T, Ebihara S. Mapping quantitative trait loci for circadian behavioral rhythms in SMXA recombinant inbred strains. Behav Genet 2000; 30:447-53. [PMID: 11523704 DOI: 10.1023/a:1010298701251] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
SM/J and A/J inbred strain of mice have different characteristics in circadian behaviors such as free-running period (tau), phase relationship (psi) between light-dark cycles and activity rhythms, and amount of wheel-running activity. To determine the genes which affect these behaviors, a quantitative trait locus (QTL) analysis using SMXA recombinant inbred strains derived from SM/J and A/J mice was performed. Concerning tau, two regions on chromosomes (Chrs) 7 and 18 surpassed the genome-wide suggestive level. As for psi, one suggestive QTL was detected on Chr 7. The QTLs which affect daily activity counts under light-dark cycles and constant darkness were mapped to the same chromosomal regions on Chrs 1 and 17, respectively. The provisional QTLs detected in the present study might be useful for understanding the complex mechanism regulating circadian behaviors.
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Affiliation(s)
- T Suzuki
- Division of Biomodeling, Graduate School of Bioagricultural Sciences, Nagoya University, Japan
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Abstract
A genome-wide scan for quantitative trait loci (QTLs) controlling body weight at 10 weeks after birth was carried out in a population of 387 intersubspecific backcross mice derived from a cross between C57BL/6J inbred mice (Mus musculus domesticus) and wild mice (M. m. castaneus) captured in the Philippines, in order to discover novel QTLs from the wild mice that have about 60% lower body weight than C57BL/6J. By interval mapping, we detected four QTLs: a highly significant QTL on Chromosome (Chr) 2, which was common in both sexes; two significant QTLs on Chr 13, one male-specific and the other female-specific; and a suggestive male-specific QTL on X Chr. By composite interval mapping, we confirmed the presence of the three QTLs on Chrs 2 and 13, but not of the male-specific X-linked QTL. The composite interval mapping analysis newly identified three QTLs: a significant male-specific QTL on Chr 11 and two highly significant female-specific QTLs on Chrs 9 and X. Individual QTLs explained 3.8-11.6% of the phenotypic variance, and all the QTL alleles derived from the wild mice decreased body weight. A two-way analysis of variance revealed a significant epistatic interaction between the Chr 2 QTL and the background marker locus D12Mit4 on Chr 12 only in males. The interaction effect unexpectedly increased body weight. The chromosomal region containing the Chr 2 QTL did not coincide with those of growth or fatness QTLs mapped in previous studies. These results suggest that a population of wild mice may play an important role as new sources of valuable QTLs.
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Affiliation(s)
- A Ishikawa
- Laboratory of Animal Genetics, Division of Applied Genetics and Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan.
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