1
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Ayres NJ, Ban G, Bison G, Bodek K, Bondar V, Bouillaud T, Bowles D, Chanel E, Chen W, Chiu PJ, Crawford C, Naviliat-Cuncic O, Doorenbos CB, Emmenegger S, Fertl M, Fratangelo A, Griffith WC, Grujic ZD, Harris PG, Kirch K, Kletzl V, Krempel J, Lauss B, Lefort T, Lejuez A, Li R, Mullan P, Pacura S, Pais D, Piegsa FM, Rienäcker I, Ries D, Pignol G, Rebreyend D, Roccia S, Rozpedzik D, Saenz-Arevalo W, Schmidt-Wellenburg P, Schnabel A, Segarra EP, Severijns N, Svirina K, Tavakoli Dinani R, Thorne J, Vankeirsbilck J, Voigt J, Yazdandoost N, Zejma J, Ziehl N, Zsigmond G, nEDM collaboration at PSI T. Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments. Eur Phys J C Part Fields 2024; 84:18. [PMID: 38205101 PMCID: PMC10774228 DOI: 10.1140/epjc/s10052-023-12351-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024]
Abstract
High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ∼ 1.4 m 3 , the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12 h down to 1.5 h .
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Affiliation(s)
- N. J. Ayres
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - G. Ban
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - G. Bison
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - K. Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland
| | - V. Bondar
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - T. Bouillaud
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - D. Bowles
- Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 USA
| | - E. Chanel
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - W. Chen
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - P.-J. Chiu
- University of Zürich, 8057 Zurich, Switzerland
| | - C. B. Crawford
- Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 USA
| | - O. Naviliat-Cuncic
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - C. B. Doorenbos
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - S. Emmenegger
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - M. Fertl
- Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
| | - A. Fratangelo
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - W. C. Griffith
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - Z. D. Grujic
- Institute of Physics, Photonics Center, University of Belgrade, Belgrade, 11080 Serbia
| | - P. G. Harris
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - K. Kirch
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - V. Kletzl
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - J. Krempel
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - B. Lauss
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - T. Lefort
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - A. Lejuez
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - R. Li
- Instituut voor Kern-en Stralingsfysica, University of Leuven, 3001 Leuven, Belgium
| | - P. Mullan
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - S. Pacura
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland
| | - D. Pais
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - F. M. Piegsa
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - I. Rienäcker
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - D. Ries
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - G. Pignol
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - D. Rebreyend
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - S. Roccia
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - D. Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland
| | - W. Saenz-Arevalo
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | | | - A. Schnabel
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587 Berlin, Germany
| | - E. P. Segarra
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - N. Severijns
- Instituut voor Kern-en Stralingsfysica, University of Leuven, 3001 Leuven, Belgium
| | - K. Svirina
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - R. Tavakoli Dinani
- Instituut voor Kern-en Stralingsfysica, University of Leuven, 3001 Leuven, Belgium
| | - J. Thorne
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - J. Vankeirsbilck
- Instituut voor Kern-en Stralingsfysica, University of Leuven, 3001 Leuven, Belgium
| | - J. Voigt
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587 Berlin, Germany
| | - N. Yazdandoost
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - J. Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland
| | - N. Ziehl
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - G. Zsigmond
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - The nEDM collaboration at PSI
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
- Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 USA
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
- University of Zürich, 8057 Zurich, Switzerland
- Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
- Institute of Physics, Photonics Center, University of Belgrade, Belgrade, 11080 Serbia
- Instituut voor Kern-en Stralingsfysica, University of Leuven, 3001 Leuven, Belgium
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587 Berlin, Germany
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
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Abel C, Ayres NJ, Ban G, Bison G, Bodek K, Bondar V, Bouillaud T, Chanel E, Chen J, Chen W, Chiu PJ, Crawford CB, Daum M, Doorenbos CB, Emmenegger S, Ferraris-Bouchez L, Fertl M, Fratangelo A, Griffith WC, Grujic ZD, Harris P, Kirch K, Kletzl V, Koss PA, Krempel J, Lauss B, Lefort T, Mullan P, Naviliat-Cuncic O, Pais D, Piegsa FM, Pignol G, Rawlik M, Rienäcker I, Ries D, Roccia S, Rozpedzik D, Saenz-Arevalo W, Schmidt-Wellenburg P, Schnabel A, Segarra EP, Severijns N, Shelton T, Svirina K, Tavakoli Dinani R, Thorne J, Virot R, Yazdandoost N, Zejma J, Ziehl N, Zsigmond G. A large 'Active Magnetic Shield' for a high-precision experiment: nEDM collaboration. Eur Phys J C Part Fields 2023; 83:1061. [PMID: 38021215 PMCID: PMC10661781 DOI: 10.1140/epjc/s10052-023-12225-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023]
Abstract
We present a novel Active Magnetic Shield (AMS), designed and implemented for the n2EDM experiment at the Paul Scherrer Institute. The experiment will perform a high-sensitivity search for the electric dipole moment of the neutron. Magnetic-field stability and control is of key importance for n2EDM. A large, cubic, 5 m side length, magnetically shielded room (MSR) provides a passive, quasi-static shielding-factor of about 10 5 for its inner sensitive volume. The AMS consists of a system of eight complex, feedback-controlled compensation coils constructed on an irregular grid spanned on a volume of less than 1000 m3 around the MSR. The AMS is designed to provide a stable and uniform magnetic-field environment around the MSR, while being reasonably compact. The system can compensate static and variable magnetic fields up to ± 50 μ T (homogeneous components) and ± 5 μ T/m (first-order gradients), suppressing them to a few μ T in the sub-Hertz frequency range. The presented design concept and implementation of the AMS fulfills the requirements of the n2EDM experiment and can be useful for other applications, where magnetically silent environments are important and spatial constraints inhibit simpler geometrical solutions.
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Affiliation(s)
- C. Abel
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - N. J. Ayres
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - G. Ban
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - G. Bison
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - K. Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - V. Bondar
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - T. Bouillaud
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - E. Chanel
- University of Bern, Albert Einstein Center for Fundamental Physics, 3012 Bern, Switzerland
- Present Address: Institut Laue Langevin, 71 avenue des Martyrs CS 20156, 38042 Grenoble Cedex 9, France
| | - J. Chen
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - W. Chen
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - P. -J. Chiu
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
- Present Address: University of Zurich, 8057 Zurich, Switzerland
| | | | - M. Daum
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - C. B. Doorenbos
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - S. Emmenegger
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Present Address: Hochschule Luzern, 6002 Luzern, Switzerland
| | | | - M. Fertl
- Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
| | - A. Fratangelo
- University of Bern, Albert Einstein Center for Fundamental Physics, 3012 Bern, Switzerland
| | - W. C. Griffith
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - Z. D. Grujic
- Institute of Physics Belgrade, University of Belgrade, 11080 Belgrade, Serbia
| | - P. Harris
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - K. Kirch
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - V. Kletzl
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - P. A. Koss
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
- Present Address: Fraunhofer Institute for Physical Measurement Techniques, 79110 Freiburg, Germany
| | - J. Krempel
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - B. Lauss
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - T. Lefort
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - P. Mullan
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - O. Naviliat-Cuncic
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - D. Pais
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - F. M. Piegsa
- University of Bern, Albert Einstein Center for Fundamental Physics, 3012 Bern, Switzerland
| | - G. Pignol
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - M. Rawlik
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Present Address: Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - I. Rienäcker
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - D. Ries
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - S. Roccia
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - D. Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - W. Saenz-Arevalo
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | | | - A. Schnabel
- Physikalisch Technische Bundesanstalt, Berlin, Germany
| | - E. P. Segarra
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - N. Severijns
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
| | | | - K. Svirina
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - R. Tavakoli Dinani
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
| | - J. Thorne
- University of Bern, Albert Einstein Center for Fundamental Physics, 3012 Bern, Switzerland
| | - R. Virot
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - N. Yazdandoost
- Department of Chemistry-TRIGA site, Johannes Gutenberg University, 55128 Mainz, Germany
| | - J. Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - N. Ziehl
- ETH Zürich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - G. Zsigmond
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
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Rajendran K, Benson JC, Lane J, Diehn F, Weber N, Thorne J, Larson N, Fletcher J, McCollough C, Leng S. Reply. AJNR Am J Neuroradiol 2022; 43:E44. [PMID: 36202549 PMCID: PMC9731242 DOI: 10.3174/ajnr.a7676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- K Rajendran
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - J C Benson
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - J Lane
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - F Diehn
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - N Weber
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - J Thorne
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - N Larson
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - J Fletcher
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - C McCollough
- Department of RadiologyMayo ClinicRochester, Minnesota
| | - S Leng
- Department of RadiologyMayo ClinicRochester, Minnesota
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Ayres NJ, Ban G, Bison G, Bodek K, Bondar V, Bouillaud T, Clement B, Chanel E, Chiu PJ, Crawford CB, Daum M, Doorenbos CB, Emmenegger S, Fratangelo A, Fertl M, Griffith WC, Grujic ZD, Harris PG, Kirch K, Krempel J, Lauss B, Lefort T, Naviliat-Cuncic O, Pais D, Piegsa FM, Pignol G, Rauscher G, Rebreyend D, Rienäcker I, Ries D, Roccia S, Rozpedzik D, Saenz-Arevalo W, Schmidt-Wellenburg P, Schnabel A, Severijns N, Shen B, Staab M, Svirina K, Dinani RT, Thorne J, Yazdandoost N, Zejma J, Zsigmond G. Publisher's Note: "The very large n2EDM magnetically shielded room with an exceptional performance for fundamental physics measurements" [Rev. Sci. Instrum. 93, 095105 (2022)]. Rev Sci Instrum 2022; 93:119902. [PMID: 36461461 DOI: 10.1063/5.0130257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Indexed: 06/17/2023]
Affiliation(s)
- N J Ayres
- Institute for Particle Physics and Astrophysics, ETH Zurich, CH-8093 Zurich, Switzerland
| | - G Ban
- Normandie Universite, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - G Bison
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - K Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - V Bondar
- Institute for Particle Physics and Astrophysics, ETH Zurich, CH-8093 Zurich, Switzerland
| | - T Bouillaud
- Universite Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - B Clement
- Universite Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - E Chanel
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - P-J Chiu
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - C B Crawford
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - M Daum
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - C B Doorenbos
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - S Emmenegger
- Institute for Particle Physics and Astrophysics, ETH Zurich, CH-8093 Zurich, Switzerland
| | - A Fratangelo
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - M Fertl
- Institute of Physics, Johannes Gutenberg University, D-55128 Mainz, Germany
| | - W C Griffith
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - Z D Grujic
- Institute of Physics, Photonics Center, University of Belgrade, 11080 Belgrade, Serbia
| | - P G Harris
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - K Kirch
- Institute for Particle Physics and Astrophysics, ETH Zurich, CH-8093 Zurich, Switzerland
| | - J Krempel
- Institute for Particle Physics and Astrophysics, ETH Zurich, CH-8093 Zurich, Switzerland
| | - B Lauss
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - T Lefort
- Normandie Universite, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - O Naviliat-Cuncic
- Normandie Universite, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - D Pais
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - F M Piegsa
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - G Pignol
- Universite Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - G Rauscher
- VAC-Vacuumschmelze, Gruner Weg 37, 63450 Hanau, Germany
| | - D Rebreyend
- Universite Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - I Rienäcker
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - D Ries
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany
| | - S Roccia
- Universite Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - D Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - W Saenz-Arevalo
- Normandie Universite, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | | | - A Schnabel
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, D-10587 Berlin, Germany
| | - N Severijns
- Instituut voor Kern-en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - B Shen
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany
| | - M Staab
- VAC-Vacuumschmelze, Gruner Weg 37, 63450 Hanau, Germany
| | - K Svirina
- Universite Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - R Tavakoli Dinani
- Instituut voor Kern-en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - J Thorne
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - N Yazdandoost
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany
| | - J Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - G Zsigmond
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
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Hallisey S, Makhijani R, Thorne J, Godiwala P, Nulsen J, Benadiva C, Grow D, Engmann L. The association of obesity with euploidy rates in women undergoing in vitro fertilization with preimplantation genetic testing. J Assist Reprod Genet 2022; 39:2521-2528. [PMID: 36214982 PMCID: PMC9723054 DOI: 10.1007/s10815-022-02624-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 09/17/2022] [Indexed: 11/25/2022] Open
Abstract
PURPOSE The purpose of this study was to determine the impact of body mass index (BMI) on euploidy rates for in vitro fertilization (IVF) cycles with preimplantation genetic testing (PGT) utilizing primarily next-generation sequencing (NGS). METHODS This retrospective cohort study included women aged ≤ 45 years who underwent IVF/PGT between September 2013 and September 2020 at a single university-affiliated fertility center. The primary outcome was euploidy rate. Secondary outcomes included peak serum estradiol (E2), number of oocytes retrieved, oocyte maturation rate, high-quality blastulation rate, clinical loss rate (CLR), clinical pregnancy rate (CPR), and ongoing pregnancy/live birth rate (OPR/LBR). RESULTS The study included 1335 IVF cycles that were stratified according to BMI (normal, n = 648; overweight, n = 377; obese, n = 310). The obese group was significantly older with significantly lower baseline FSH, peak E2, high-quality blastulation rate, and number of embryos biopsied than the normal group. Overall euploidy rates were not significantly different between BMI groups (normal 36.4% ± 1.3; overweight 37.3% ± 1.8; obese 32.3% ± 1.8; p = 0.11), which persisted after controlling for covariates (p = 0.82) and after stratification of euploidy rate by age group and by number of oocytes retrieved per age group. There were no significant differences in CLR, CPR, and OPR/LBR across BMI groups. CONCLUSIONS Despite a lower high quality blastulation rate with obesity, there is not a significant difference in euploidy rates across BMI groups in women undergoing IVF/PGT.
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Affiliation(s)
- Stephanie Hallisey
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA
| | - Reeva Makhijani
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA
| | - Jeffrey Thorne
- Reproductive Medicine Associates of Philadelphia, 1015 Chestnut Street, 8th Floor, Philadelphia, PA, 19107, USA
| | - Prachi Godiwala
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA
| | - John Nulsen
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA
| | - Claudio Benadiva
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA
| | - Daniel Grow
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA
| | - Lawrence Engmann
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology & Infertility, University of Connecticut Health Center, 2 Batterson Park Rd, Farmington, CT, 06032, USA.
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Ayres NJ, Ban G, Bison G, Bodek K, Bondar V, Bouillaud T, Clement B, Chanel E, Chiu PJ, Crawford CB, Daum M, Doorenbos CB, Emmenegger S, Fratangelo A, Fertl M, Griffith WC, Grujic ZD, Harris PG, Kirch K, Krempel J, Lauss B, Lefort T, Naviliat-Cuncic O, Pais D, Piegsa FM, Pignol G, Rauscher G, Rebreyend D, Rienäcker I, Ries D, Roccia S, Rozpedzik D, Saenz-Arevalo W, Schmidt-Wellenburg P, Schnabel A, Severijns N, Shen B, Staab M, Svirina K, Dinani RT, Thorne J, Yazdandoost N, Zejma J, Zsigmond G. The very large n2EDM magnetically shielded room with an exceptional performance for fundamental physics measurements. Rev Sci Instrum 2022; 93:095105. [PMID: 36182526 DOI: 10.1063/5.0101391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
We present the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute, which features an interior cubic volume with each side of length 2.92 m, thus providing an accessible space of 25 m3. The MSR has 87 openings of diameter up to 220 mm for operating the experimental apparatus inside and an intermediate space between the layers for housing sensitive signal processing electronics. The characterization measurements show a remanent magnetic field in the central 1 m3 below 100 pT and a field below 600 pT in the entire inner volume, up to 4 cm to the walls. The quasi-static shielding factor at 0.01 Hz measured with a sinusoidal 2 μT peak-to-peak signal is about 100 000 in all three spatial directions and increases rapidly with frequency to reach 108 above 1 Hz.
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Affiliation(s)
- N J Ayres
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zurich, Switzerland
| | - G Ban
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - G Bison
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - K Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - V Bondar
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zurich, Switzerland
| | - T Bouillaud
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - B Clement
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - E Chanel
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - P-J Chiu
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - C B Crawford
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - M Daum
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - C B Doorenbos
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - S Emmenegger
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zurich, Switzerland
| | - A Fratangelo
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - M Fertl
- Institute of Physics, Johannes Gutenberg University, D-55128 Mainz, Germany
| | - W C Griffith
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - Z D Grujic
- Institute of Physics, Photonics Center, University of Belgrade, 11080 Belgrade, Serbia
| | - P G Harris
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - K Kirch
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zurich, Switzerland
| | - J Krempel
- Institute for Particle Physics and Astrophysics, ETH Zürich, CH-8093 Zurich, Switzerland
| | - B Lauss
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - T Lefort
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - O Naviliat-Cuncic
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - D Pais
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - F M Piegsa
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - G Pignol
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - G Rauscher
- VAC-Vacuumschmelze, Grüner Weg 37, 63450 Hanau, Germany
| | - D Rebreyend
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - I Rienäcker
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - D Ries
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany
| | - S Roccia
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - D Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - W Saenz-Arevalo
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | | | - A Schnabel
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, D-10587 Berlin, Germany
| | - N Severijns
- Instituut voor Kern-en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - B Shen
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany
| | - M Staab
- VAC-Vacuumschmelze, Grüner Weg 37, 63450 Hanau, Germany
| | - K Svirina
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - R Tavakoli Dinani
- Instituut voor Kern-en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - J Thorne
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - N Yazdandoost
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany
| | - J Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - G Zsigmond
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
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Hills J, Simon E, Mignacca S, Beck K, Vickery C, Lockey R, Thorne J, Griffiths P, Spiropoulos J. Have the Biological Properties of Classical BSE Changed After the Implementation of the Reinforced Feed Ban in 1996 in the UK? J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.036] [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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Ayres NJ, Ban G, Bienstman L, Bison G, Bodek K, Bondar V, Bouillaud T, Chanel E, Chen J, Chiu PJ, Clément B, Crawford CB, Daum M, Dechenaux B, Doorenbos CB, Emmenegger S, Ferraris-Bouchez L, Fertl M, Fratangelo A, Flaux P, Goupillière D, Griffith WC, Grujic ZD, Harris PG, Kirch K, Koss PA, Krempel J, Lauss B, Lefort T, Lemière Y, Leredde A, Meier M, Menu J, Mullins DA, Naviliat-Cuncic O, Pais D, Piegsa FM, Pignol G, Quéméner G, Rawlik M, Rebreyend D, Rienäcker I, Ries D, Roccia S, Ross KU, Rozpedzik D, Saenz W, Schmidt-Wellenburg P, Schnabel A, Severijns N, Shen B, Stapf T, Svirina K, Tavakoli Dinani R, Touati S, Thorne J, Virot R, Voigt J, Wursten E, Yazdandoost N, Zejma J, Zsigmond G. The design of the n2EDM experiment: nEDM Collaboration. Eur Phys J C Part Fields 2021; 81:512. [PMID: 34720721 PMCID: PMC8550164 DOI: 10.1140/epjc/s10052-021-09298-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/30/2021] [Indexed: 06/13/2023]
Abstract
We present the design of a next-generation experiment, n2EDM, currently under construction at the ultracold neutron source at the Paul Scherrer Institute (PSI) with the aim of carrying out a high-precision search for an electric dipole moment of the neutron. The project builds on experience gained with the previous apparatus operated at PSI until 2017, and is expected to deliver an order of magnitude better sensitivity with provision for further substantial improvements. An overview is of the experimental method and setup is given, the sensitivity requirements for the apparatus are derived, and its technical design is described.
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Affiliation(s)
- N. J. Ayres
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - G. Ban
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - L. Bienstman
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
| | - G. Bison
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - K. Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - V. Bondar
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - T. Bouillaud
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - E. Chanel
- Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - J. Chen
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - P.-J. Chiu
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - B. Clément
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | | | - M. Daum
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - B. Dechenaux
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - C. B. Doorenbos
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - S. Emmenegger
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | | | - M. Fertl
- Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
| | - A. Fratangelo
- Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - P. Flaux
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - D. Goupillière
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - W. C. Griffith
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - Z. D. Grujic
- Institute of Physics Belgrade, University of Belgrade, 11080 Belgrade, Serbia
| | - P. G. Harris
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH UK
| | - K. Kirch
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - P. A. Koss
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
- Present Address: Fraunhofer Institute for Physical Measurement Techniques, 79110 Freiburg, Germany
| | - J. Krempel
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
| | - B. Lauss
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - T. Lefort
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - Y. Lemière
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - A. Leredde
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - M. Meier
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - J. Menu
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - D. A. Mullins
- Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - O. Naviliat-Cuncic
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - D. Pais
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - F. M. Piegsa
- Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - G. Pignol
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - G. Quéméner
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - M. Rawlik
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Present Address: Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - D. Rebreyend
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - I. Rienäcker
- Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zurich, Switzerland
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - D. Ries
- Department of Chemistry-TRIGA site, Johannes Gutenberg University, 55128 Mainz, Germany
| | - S. Roccia
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - K. U. Ross
- Department of Chemistry-TRIGA site, Johannes Gutenberg University, 55128 Mainz, Germany
| | - D. Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - W. Saenz
- Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | | | - A. Schnabel
- Physikalisch Technische Bundesanstalt, Berlin, Germany
| | - N. Severijns
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
| | - B. Shen
- Department of Chemistry-TRIGA site, Johannes Gutenberg University, 55128 Mainz, Germany
| | - T. Stapf
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - K. Svirina
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - R. Tavakoli Dinani
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
| | - S. Touati
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - J. Thorne
- Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern, Switzerland
| | - R. Virot
- LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France
| | - J. Voigt
- Physikalisch Technische Bundesanstalt, Berlin, Germany
| | - E. Wursten
- Institute for Nuclear and Radiation Physics, KU Leuven, 3001 Leuven, Belgium
| | - N. Yazdandoost
- Department of Chemistry-TRIGA site, Johannes Gutenberg University, 55128 Mainz, Germany
| | - J. Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - G. Zsigmond
- Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
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Hallisey SM, Makhijani RB, Thorne J, Godiwala PN, Nulsen J, Benadiva CA, Grow DR, Engmann L. THE EFFECT OF OBESITY ON EUPLOIDY RATES IN WOMEN UNDERGOING IN VITRO FERTILIZATION (IVF) WITH PREIMPLANTATION GENETIC TESTING (PGT). Fertil Steril 2020. [DOI: 10.1016/j.fertnstert.2020.08.322] [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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Makhijani R, Thorne J, Bartels C, Bartolucci A, Nulsen J, Grow D, Benadiva C, Engmann L. Pregnancy outcomes after frozen-thawed single euploid blastocyst transfer following IVF cycles using GNRH agonist or HCG trigger for final oocyte maturation. J Assist Reprod Genet 2020; 37:611-617. [PMID: 31897845 DOI: 10.1007/s10815-019-01646-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/29/2019] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To assess whether GnRH agonist trigger impacts the implantation potential of euploid embryos. METHODS Retrospective cohort study done at an academic IVF center evaluating frozen-thawed embryo transfer (FET) cycles in which single-euploid blastocysts were transferred between 2014 and 2019. All embryos were generated in an IVF cycle which used GnRHa or hCG trigger and then were transferred in a programmed or natural FET cycle. Only the first FET cycle was included for each patient. Primary outcome was ongoing pregnancy rate or live birth rate (OPR/LBR). Secondary outcomes were implantation rate (IR), clinical pregnancy rate (CPR), clinical loss rate (CLR), and multiple pregnancy rate (MPR). Logistic regression was performed to control for confounding variables. A p value of < 0.05 was considered statistically significant. RESULTS Two hundred sixty-three FET cycles were included for analysis (GnRHa = 145; hCG = 118). The GnRHa group was significantly younger (35.2 vs. 37.5 years) and had higher AMH values (4.50 ng/ml vs. 2.03 ng/ml) than the hCG group, respectively (p < 0.05). There was no significant difference in OPR/LBR (64.1% (93/145) vs. 65.3% (77/118); p = 0.90) between the GnRHa and hCG groups, respectively. There was also no significant difference in IR, CPR, CLR, or MPR between groups. After controlling for confounding variables, the adjusted odds ratio for OPR/LBR was 0.941 (95% CI, 0.534-1.658); p = 0.83) comparing GnRHa to hCG. Pregnancy outcomes did not significantly differ when groups were stratified by age (< 35 vs. > 35 years old). CONCLUSIONS Our findings confirm that euploid embryos created after hCG or GnRHa trigger have the same potential for pregnancy.
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Affiliation(s)
- Reeva Makhijani
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Jeffrey Thorne
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Chantal Bartels
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Alison Bartolucci
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - John Nulsen
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Daniel Grow
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Claudio Benadiva
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Lawrence Engmann
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, University of Connecticut School of Medicine, Farmington, CT, USA.
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Abel C, Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu PJ, Daum M, Emmenegger S, Ferraris-Bouchez L, Flaux P, Griffith W, Harris P, Hild N, Kermaidic Y, Kirch K, Koss P, Krempel J, Lauss B, Lefort T, Lemiere Y, Leredde A, Mohanmurthy P, Musgrave M, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Rawlik M, Rebreyend D, Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Severijns N, Thorne J, Virot R, Voigt J, Weis A, Wursten E, Zejma J, Zsigmond G. nEDM experiment at PSI: Data-taking strategy and sensitivity of the dataset. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201921902001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on the strategy used to optimize the sensitivity of our search for a neutron electric dipole moment at the Paul Scherrer Institute. Measurements were made upon ultracold neutrons stored within a single chamber at the heart of our apparatus. A mercury cohabiting magnetometer together with an array of cesium magnetometers were used to monitor the magnetic field, which was controlled and shaped by a series of precision field coils. In addition to details of the setup itself, we describe the chosen path to realize an appropriate balance between achieving the highest statistical sensitivity alongside the necessary control on systematic effects. The resulting irreducible sensitivity is better than 1 × 10−26e cm. This contribution summarizes in a single coherent picture the results of the most recent publications of the collaboration.
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Abel C, Ayres N, Bison G, Bodek K, Bondar V, Chiu PJ, Daum M, Emmenegger S, Flaux P, Ferraris-Bouchez L, Griffith W, Grujić Z, Hild N, Kirch K, Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Leredde A, Mohanmurthy P, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Rawlik M, Rebreyend D, Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Severijns N, Thorne J, Virot R, Zejma J, Zsigmond G. Statistical sensitivity of the nEDM apparatus at PSI to n − n′ oscillations. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201921907001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The neutron and its hypothetical mirror counterpart, a sterile state degenerate in mass, could spontaneously mix in a process much faster than the neutron β-decay. Two groups have performed a series of experiments in search of neutron – mirror-neutron (n − n′) oscillations. They reported no evidence, thereby setting stringent limits on the oscillation time τnn′. Later, these data sets have been further analyzed by Berezhiani et al.(2009–2017), and signals, compatible with n − n′ oscillations in the presence of mirror magnetic fields, have been reported. The Neutron Electric Dipole Moment Collaboration based at the Paul Scherrer Institute performed a new series of experiments to further test these signals. In this paper, we describe and motivate our choice of run configurations with an optimal filling time of 29 s, storage times of 180 s and 380 s, and applied magnetic fields of 10 μT and 20 μT. The choice of these run configurations ensures a reliable overlap in settings with the previous efforts and also improves the sensitivity to test the signals. We also elaborate on the technique of normalizing the neutron counts, making such a counting experiment at the ultra-cold neutron source at the Paul Scherrer Institute possible. Furthermore, the magnetic field characterization to meet the requirements of this n − n′ oscillation search is demonstrated. Finally, we show that this effort has a statistical sensitivity to n − n′ oscillations comparable to the current leading constraints for B′ = 0.
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Abel C, Ayres NJ, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu PJ, Clement B, Crawford C, Daum M, Emmenegger S, Flaux P, Ferraris-Bouchez L, Griffith W, Grujić Z, Harris P, Heil W, Hild N, Kirch K, Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Leredde A, Mohanmurthy P, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Rawlik M, Rebreyend D, Ries D, Roccia S, Ross K, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Severijns N, Thorne J, Virot R, Voigt J, Weis A, Wursten E, Zejma J, Zsigmond G. The n2EDM experiment at the Paul Scherrer Institute. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201921902002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present the new spectrometer for the neutron electric dipole moment (nEDM) search at the Paul Scherrer Institute (PSI), called n2EDM. The setup is at room temperature in vacuum using ultracold neutrons. n2EDM features a large UCN double storage chamber design with neutron transport adapted to the PSI UCN source. The design builds on experience gained from the previous apparatus operated at PSI until 2017. An order of magnitude increase in sensitivity is calculated for the new baseline setup based on scalable results from the previous apparatus, and the UCN source performance achieved in 2016.
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Bartels C, Thorne J, Makhijani RB, Daniel GR, Nulsen J, Benadiva C, Engmann L. Longer duration of progesterone elevation adversely impacts pregnancy outcomes during IVF in women ≤ 40 years. Fertil Steril 2019. [DOI: 10.1016/j.fertnstert.2019.07.633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Makhijani RB, Bartels C, Thorne J, Daniel GR, Nulsen J, Engmann L, Benadiva C. Ovulation rate with letrozole stair-step protocol and in subsequent letrozole cycle. Fertil Steril 2019. [DOI: 10.1016/j.fertnstert.2019.07.689] [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: 10/25/2022]
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Makhijani RB, Coulter M, Thorne J, Bartels C, Nulsen J, Engmann L, Benadiva C, Daniel GR. Impact of preimplantation genetic testing for aneuploidy (PGT-A) on gestational carrier (GC) cycles in the United States. Fertil Steril 2019. [DOI: 10.1016/j.fertnstert.2019.07.706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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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Wilcox A, Thorne J, Nulsen J, Benadiva C, Grow DR. Reducing the frequency of embryo mosaicism through artificial intelligence. Fertil Steril 2019. [DOI: 10.1016/j.fertnstert.2019.08.053] [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: 10/25/2022]
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Thorne J, Loza A, Kaye L, Nulsen J, Benadiva C, Grow D, Engmann L. Euploidy rates between cycles triggered with gonadotropin-releasing hormone agonist and human chorionic gonadotropin. Fertil Steril 2019; 112:258-265. [DOI: 10.1016/j.fertnstert.2019.03.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 03/28/2019] [Accepted: 03/28/2019] [Indexed: 11/27/2022]
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Kaye L, Griffin D, Thorne J, Neuber E, Nulsen J, Benadiva C, Engmann L. Independent serum markers of corpora lutea function after gonadotropin-releasing hormone agonist trigger and adjuvant low dose human chorionic gonadotropin in in vitro fertilization. Fertil Steril 2019; 112:534-544. [PMID: 31227286 DOI: 10.1016/j.fertnstert.2019.04.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 03/29/2019] [Accepted: 04/22/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To characterize corpora lutea (CL) function after gonadotropin-releasing hormone agonist (GnRHa) trigger with the use of adjuvant human chorionic gonadotropin (hCG). DESIGN Secondary analysis of serum from prospective randomized clinical trial. SETTING University-based fertility center. PATIENT(S) Women under 40 years of age at risk of ovarian hyperstimulation syndrome (OHSS) with serum E2 level <4,000 pg/mL. INTERVENTIONS(S) All subjects underwent ovarian stimulation with the use of a GnRH antagonist protocol. Within a larger study, subjects were randomized to receive 1,000 IU hCG at the time of GnRHa trigger and placebo at the time of vaginal oocyte retrieval (VOR) or placebo at the time of GnRHa trigger and 1,500 IU hCG at the time of VOR. MAIN OUTCOME MEASURE(S) Luteal phase and early pregnancy curves of serum prorenin and 17α-hydroxyprogesterone (17OH-P). RESULT(S) Thirty subjects enrolled in this secondary analysis. Serum 17OH-P peaked in the early luteal phase, 5 days after GnRHa trigger, with a nadir in the mid-luteal phase 9 days after trigger. Serum prorenin peaked in the luteal phase 2 days after GnRHa trigger, independently from adjuvant hCG timing, and reached a nadir at 9 days after trigger. CL function appears higher when adjuvant hCG is given at VOR compared with adjuvant hCG given at the time of trigger. CONCLUSION(S) CL function, as interpreted by proxy measures of serum prorenin and 17OH-P with pregnancy, continues despite GnRHa trigger. Both options for adjuvant hCG timing are sufficient for CL rescue and successful pregnancy, so the potential for OHSS risk with increased CL activity after hCG at VOR should be considered. CLINICAL TRIAL REGISTRATION NUMBER NCT01815138.
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Affiliation(s)
- Leah Kaye
- Fertility Center of Las Vegas, Las Vegas, Nevada
| | | | - Jeffrey Thorne
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Evelyn Neuber
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Connecticut School of Medicine, Farmington, Connecticut
| | - John Nulsen
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Claudio Benadiva
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Lawrence Engmann
- Center for Advanced Reproductive Services, Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Connecticut School of Medicine, Farmington, Connecticut.
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Wilson SR, Shinde S, Appleby I, Boscoe M, Conway D, Dryden C, Ferguson K, Gedroyc W, Kinsella SM, Nathanson MH, Thorne J, White M, Wright E. Guidelines for the safe provision of anaesthesia in magnetic resonance units 2019. Anaesthesia 2019; 74:638-650. [DOI: 10.1111/anae.14578] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2018] [Indexed: 01/02/2023]
Affiliation(s)
- S. R. Wilson
- Department of Neuro‐anaesthesia and Neurocritical Care National Hospital for Neurology and Neurosurgery LondonUK and Neuro Anaesthesia and Critical Care Society of Great Britain and Ireland (Co‐Chair)
| | - S. Shinde
- Department of Anaesthesia North Bristol NHS Trust BristolUK and Vice President, Association of Anaesthetists (Co‐Chair)
| | - I. Appleby
- Department of Neuro‐anaesthesia and Neurocritical Care National Hospital for Neurology and Neurosurgery LondonUK and Neuro Anaesthesia and Critical Care Society of Great Britain and Ireland
| | - M. Boscoe
- Royal College of Anaesthetists LondonUK and Society of Anaesthetists in Radiology
| | - D. Conway
- Department of Anaesthesia Chelsea and Westminster Hospital LondonUK and Trainee Committee, Association of Anaesthetists
| | - C. Dryden
- Jackson Rees Department of Paediatric Anaesthesia Alder Hey Children's Hospital LiverpoolUK and Association of Paediatric Anaesthetists of Great Britain and Ireland
| | - K. Ferguson
- Department of Anaesthesia Aberdeen Royal Infirmary Aberdeen UK and Association of Anaesthetists Safety Representative
| | - W. Gedroyc
- Imperial College LondonUK and Royal College of Radiologists
| | - S. M. Kinsella
- Department of Anaesthesia St Michaels Hospital BristolUK and Editor, Anaesthesia
| | - M. H. Nathanson
- Department of Anaesthesia Nottingham University Hospital NottinghamUK and Immediate Past Honorary Secretary, Association of Anaesthetists
| | - J. Thorne
- Department of Neurosurgery Salford Royal Foundation Trust SalfordUK and Society of British Neurological Surgeons
| | | | - E. Wright
- Jackson Rees Department of Paediatric Anaesthesia Alder Hey Children's Hospital Liverpool UK
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Triolo TM, Fouts A, Pyle L, Yu L, Gottlieb PA, Steck AK, Greenbaum CJ, Atkinson M, Baidal D, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Clements M, Colman P, DiMeglio L, Gitelman S, Goland R, Gottlieb P, Herold K, Knip M, Krischer J, Lernmark A, Moore W, Moran A, Muir A, Palmer J, Peakman M, Philipson L, Raskin P, Redondo M, Rodriguez H, Russell W, Spain L, Schatz D, Sosenko J, Wentworth J, Wherrett D, Wilson D, Winter W, Ziegler A, Anderson M, Antinozzi P, Benoist C, Blum J, Bourcier K, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Insel R, Kaufman F, Kay T, Leschek E, Mahon J, Marks J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Pugliese A, Roep B, Roncarolo M, Savage P, Simell O, Sherwin R, Siegelman M, Skyler J, Steck A, Thomas J, Trucco M, Wagner J, Krischer JP, Leschek E, Rafkin L, Bourcier K, Cowie C, Foulkes M, Insel R, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Rafkin L, Sosenko JM, Kenyon NS, Santiago I, Krischer JP, Bundy B, Abbondondolo M, Dixit S, Pasha M, King K, Adcock H, Atterberry L, Fox K, Englert N, Mauras J, Permuy K, Sikes T, Adams T, Berhe B, Guendling L, McLennan L, Paganessi C, Murphy M, Draznin M, Kamboj S, Sheppard V, Lewis L, Coates W, Amado D, Moore G, Babar J, Bedard D, Brenson-Hughes J, Cernich M, Clements R, Duprau S, Goodman L, Hester L, Huerta-Saenz A, Asif I, Karmazin T, Letjen S, Raman D, Morin W, Bestermann E, Morawski J, White A, Brockmyer R, Bays S, Campbell A, Boonstra M, Stapleton N, Stone A, Donoho H, Everett H, Hensley M, Johnson C, Marshall N, Skirvin P, Taylor R, Williams L, Burroughs C, Ray C, Wolverton D, Nickels C, Dothard P, Speiser M, Pellizzari L, Bokor K, Izuora S, Abdelnour P, Cummings S, Cuthbertson D, Paynor M, Leahy M, Riedl S, Shockley R, Saad T, Briones S, Casella C, Herz K, Walsh J, Greening F, Deemer M, Hay S, Hunt N, Sikotra L, Simons D, Karounos R, Oremus L, Dye L, Myers D, Ballard W, Miers R, Eberhard C, Sparks K, Thraikill K, Edwards J, Fowlkes S, Kemp A, Morales L, Holland L, Johnson P, Paul A, Ghatak K, Fiske S, Phelen H, Leyland T, Henderson D, Brenner E, Oppenheimer I, Mamkin C, Moniz C, Clarson M, Lovell A, Peters V, Ford J, Ruelas D, Borut D, Burt M, Jordan S, Castilla P, Flores M, Ruiz L, Hanson J, Green-Blair R, Sheridan K, Garmeson J, Wintergerst G, Pierce A, Omoruyi M, Foster S, Kingery A, Lunsford I, Cervantes T, Parker P, Price J, Urben I, Guillette H, Doughty H, Haydock V, Parker P, Bergman S, Duncum C, Rodda A, Perelman R, Calendo C, Barrera E, Arce-Nunez Y, Geyer S, Martinez M, De la Portilla I, Cardenas L, Garrido M, Villar R, Lorini E, Calandra G, D’Annuzio K, Perri N, Minuto C, Hays B, Rebora R, Callegari O, Ali J, Kramer B, Auble S, Cabrera P, Donohoue R, Fiallo-Scharer M, Hessner P, Wolfgram A, Henderson C, Kansra N, Bettin R, McCuller A, Miller S, Accacha J, Corrigan E, Fiore R, Levine T, Mahoney C, Polychronakos V, Henry M, Gagne H, Starkman M, Fox D, Chin F, Melchionne L, Silverman I, Marshall L, Cerracchio J, Cruz A, Viswanathan J, Heyman K, Wilson S, Chalew S, Valley S, Layburn A, Lala P, Clesi M, Genet G, Uwaifo A, Charron T, Allerton W, Hsiao B, Cefalu L, Melendez-Ramirez R, Richards C, Alleyn E, Gustafson M, Lizanna J, Wahlen S, Aleiwe M, Hansen H, Wahlen C, Karges C, Levy A, Bonaccorso R, Rapaport Y, Tomer D, Chia M, Goldis L, Iazzetti M, Klein C, Levister L, Waldman E, Keaton N, Wallach M, Regelmann Z, Antal M, Aranda C, Reynholds A, Vinik P, Barlow M, Bourcier M, Nevoret J, Couper S, Kinderman A, Beresford N, Thalagne H, Roper J, Gibbons J, Hill S, Balleaut C, Brennan J, Ellis-Gage L, Fear T, Gray L, Law P, Jones C, McNerney L, Pointer N, Price K, Few D, Tomlinson N, Leech D, Wake C, Owens M, Burns J, Leinbach A, Wotherspoon A, Murray K, Short G, Curry S, Kelsey J, Lawson J, Porter S, Stevens E, Thomson S, Winship L, Liu S, Wynn E, Wiltshire J, Krebs P, Cresswell H, Faherty C, Ross L, Denvir J, Drew T, Randell P, Mansell S, Lloyd J, Bell S, Butler Y, Hooton H, Navarra A, Roper G, Babington L, Crate H, Cripps A, Ledlie C, Moulds R, Malloy J, Norton B, Petrova O, Silkstone C, Smith K, Ghai M, Murray V, Viswanathan M, Henegan O, Kawadry J, Olson L, Maddox K, Patterson T, Ahmad B, Flores D, Domek S, Domek K, Copeland M, George J, Less T, Davis M, Short A, Martin J, Dwarakanathan P, O’Donnell B, Boerner L, Larson M, Phillips M, Rendell K, Larson C, Smith K, Zebrowski L, Kuechenmeister M, Miller J, Thevarayapillai M, Daniels H, Speer N, Forghani R, Quintana C, Reh A, Bhangoo P, Desrosiers L, Ireland T, Misla C, Milliot E, Torres S, Wells J, Villar M, Yu D, Berry D, Cook J, Soder A, Powell M, Ng M, Morrison Z, Moore M, Haslam M, Lawson B, Bradley J, Courtney C, Richardson C, Watson E, Keely D, DeCurtis M, Vaccarcello-Cruz Z, Torres K, Muller S, Sandberg H, Hsiang B, Joy D, McCormick A, Powell H, Jones J, Bell S, Hargadon S, Hudson M, Kummer S, Nguyen T, Sauder E, Sutton K, Gensel R, Aguirre-Castaneda V, Benavides, Lopez D, Hemp S, Allen J, Stear E, Davis T, O’Donnell R, Jones A, Roberts J, Dart N, Paramalingam L, Levitt Katz N, Chaudhary K, Murphy S, Willi B, Schwartzman C, Kapadia D, Roberts A, Larson D, McClellan G, Shaibai L, Kelley G, Villa C, Kelley R, Diamond M, Kabbani T, Dajani F, Hoekstra M, Sadler K, Magorno J, Holst V, Chauhan N, Wilson P, Bononi M, Sperl A, Millward M, Eaton L, Dean J, Olshan H, Stavros T, Renna C, Milliard, Brodksy L, Bacon J, Quintos L, Topor S, Bialo B, Bancroft A, Soto W, Lagarde H, Tamura R, Lockemer T, Vanderploeg M, Ibrahim M, Huie V, Sanchez R, Edelen R, Marchiando J, Palmer T, Repas M, Wasson P, Wood K, Auker J, Culbertson T, Kieffer D, Voorhees T, Borgwardt L, DeRaad K, Eckert E, Isaacson H, Kuhn A, Carroll M, Xu P, Schubert G, Francis S, Hagan T, Le M, Penn E, Wickham C, Leyva K, Rivera J, Padilla I, Rodriguez N, Young K, Jospe J, Czyzyk B, Johnson U, Nadgir N, Marlen G, Prakasam C, Rieger N, Glaser E, Heiser B, Harris C, Alies P, Foster H, Slater K, Wheeler D, Donaldson M, Murray D, Hale R, Tragus D, Word J, Lynch L, Pankratz W, Badias F, Rogers R, Newfield S, Holland M, Hashiguchi M, Gottschalk A, Philis-Tsimikas R, Rosal S, Franklin S, Guardado N, Bohannon M, Baker A, Garcia T, Aguinaldo J, Phan V, Barraza D, Cohen J, Pinsker U, Khan J, Wiley L, Jovanovic P, Misra M, Bassi M, Wright D, Cohen K, Huang M, Skiles S, Maxcy C, Pihoker K, Cochrane J, Fosse S, Kearns M, Klingsheim N, Beam C, Wright L, Viles H, Smith S, Heller M, Cunningham A, Daniels L, Zeiden J, Field R, Walker K, Griffin L, Boulware D, Bartholow C, Erickson J, Howard B, Krabbenhoft C, Sandman A, Vanveldhuizen J, Wurlger A, Zimmerman K, Hanisch L, Davis-Keppen A, Bounmananh L, Cotterill J, Kirby M, Harris A, Schmidt C, Kishiyama C, Flores J, Milton W, Martin C, Whysham A, Yerka T, Bream S, Freels J, Hassing J, Webster R, Green P, Carter J, Galloway D, Hoelzer S, Roberts S, Said P, Sullivan H, Freeman D, Allen E, Reiter E, Feinberg C, Johnson L, Newhook D, Hagerty N, White L, Levandoski J, Kyllo M, Johnson C, Gough J, Benoit P, Iyer F, Diamond H, Hosono S, Jackman L, Barette P, Jones I, Sills S, Bzdick J, Bulger R, Ginem J, Weinstock I, Douek R, Andrews G, Modgill G, Gyorffy L, Robin N, Vaidya S, Crouch K, O’Brien C, Thompson N, Granger M, Thorne J, Blumer J, Kalic L, Klepek J, Paulett B, Rosolowski J, Horner M, Watkins J, Casey K, Carpenter C, Michelle Kieffer MH, Burns J, Horton C, Pritchard D, Soetaert A, Wynne C, Chin O, Molina C, Patel R, Senguttuvan M, Wheeler O, Lane P, Furet C, Steuhm D, Jelley S, Goudeau L, Chalmers D, Greer C, Panagiotopoulos D, Metzger D, Nguyen M, Horowitz M, Linton C, Christiansen E, Glades C, Morimoto M, Macarewich R, Norman K, Patin C, Vargas A, Barbanica A, Yu P, Vaidyanathan W, Nallamshetty L, Osborne R, Mehra S, Kaster S, Neace J, Horner G, Reeves C, Cordrey L, Marrs T, Miller S, Dowshen D, Oduah V, Doyle S, Walker D, Catte H, Dean M, Drury-Brown B, Hackman M, Lee S, Malkani K, Cullen K, Johnson P, Parrimon Y, Hampton M, McCarrell C, Curtis E, Paul, Zambrano Y, Paulus K, Pilger J, Ramiro J, Luvon Ritzie AQ, Sharma A, Shor A, Song X, Terry A, Weinberger J, Wootten M, Lachin JM, Foulkes M, Harding P, Krause-Steinrauf H, McDonough S, McGee PF, Owens Hess K, Phoebus D, Quinlan S, Raiden E, Batts E, Buddy C, Kirpatrick K, Ramey M, Shultz A, Webb C, Romesco M, Fradkin J, Leschek E, Spain L, Savage P, Aas S, Blumberg E, Beck G, Brillon D, Gubitosi-Klug R, Laffel L, Vigersky R, Wallace D, Braun J, Lernmark A, Lo B, Mitchell H, Naji A, Nerup J, Orchard T, Steffes M, Tsiatis A, Veatch R, Zinman B, Loechelt B, Baden L, Green M, Weinberg A, Marcovina S, Palmer JP, Weinberg A, Yu L, Babu S, Winter W, Eisenbarth GS, Bingley P, Clynes R, DiMeglio L, Eisenbarth G, Hays B, Leschek E, Marks J, Matheson D, Rafkin L, Rodriguez H, Spain L, Wilson D, Redondo M, Gomez D, McDonald A, Pena S, Pietropaolo M, Shippy K, Batts E, Brown T, Buckner J, Dove A, Hammond M, Hefty D, Klein J, Kuhns K, Letlau M, Lord S, McCulloch-Olson M, Miller L, Nepom G, Odegard J, Ramey M, Sachter E, St. Marie M, Stickney K, VanBuecken D, Vellek B, Webber C, Allen L, Bollyk J, Hilderman N, Ismail H, Lamola S, Sanda S, Vendettuoli H, Tridgell D, Monzavi R, Bock M, Fisher L, Halvorson M, Jeandron D, Kim M, Wood J, Geffner M, Kaufman F, Parkman R, Salazar C, Goland R, Clynes R, Cook S, Freeby M, Pat Gallagher M, Gandica R, Greenberg E, Kurland A, Pollak S, Wolk A, Chan M, Koplimae L, Levine E, Smith K, Trast J, DiMeglio L, Blum J, Evans-Molina C, Hufferd R, Jagielo B, Kruse C, Patrick V, Rigby M, Spall M, Swinney K, Terrell J, Christner L, Ford L, Lynch S, Menendez M, Merrill P, Pescovitz M, Rodriguez H, Alleyn C, Baidal D, Fay S, Gaglia J, Resnick B, Szubowicz S, Weir G, Benjamin R, Conboy D, deManbey A, Jackson R, Jalahej H, Orban T, Ricker A, Wolfsdorf J, Zhang HH, Wilson D, Aye T, Baker B, Barahona K, Buckingham B, Esrey K, Esrey T, Fathman G, Snyder R, Aneja B, Chatav M, Espinoza O, Frank E, Liu J, Perry J, Pyle R, Rigby A, Riley K, Soto A, Gitelman S, Adi S, Anderson M, Berhel A, Breen K, Fraser K, Gerard-Gonzalez A, Jossan P, Lustig R, Moassesfar S, Mugg A, Ng D, Prahalod P, Rangel-Lugo M, Sanda S, Tarkoff J, Torok C, Wesch R, Aslan I, Buchanan J, Cordier J, Hamilton C, Hawkins L, Ho T, Jain A, Ko K, Lee T, Phelps S, Rosenthal S, Sahakitrungruang T, Stehl L, Taylor L, Wertz M, Wong J, Philipson L, Briars R, Devine N, Littlejohn E, Grant T, Gottlieb P, Klingensmith G, Steck A, Alkanani A, Bautista K, Bedoy R, Blau A, Burke B, Cory L, Dang M, Fitzgerald-Miller L, Fouts A, Gage V, Garg S, Gesauldo P, Gutin R, Hayes C, Hoffman M, Ketchum K, Logsden-Sackett N, Maahs D, Messer L, Meyers L, Michels A, Peacock S, Rewers M, Rodriguez P, Sepulbeda F, Sippl R, Steck A, Taki I, Tran BK, Tran T, Wadwa RP, Zeitler P, Barker J, Barry S, Birks L, Bomsburger L, Bookert T, Briggs L, Burdick P, Cabrera R, Chase P, Cobry E, Conley A, Cook G, Daniels J, DiDomenico D, Eckert J, Ehler A, Eisenbarth G, Fain P, Fiallo-Scharer R, Frank N, Goettle H, Haarhues M, Harris S, Horton L, Hutton J, Jeffrrey J, Jenison R, Jones K, Kastelic W, King MA, Lehr D, Lungaro J, Mason K, Maurer H, Nguyen L, Proto A, Realsen J, Schmitt K, Schwartz M, Skovgaard S, Smith J, Vanderwel B, Voelmle M, Wagner R, Wallace A, Walravens P, Weiner L, Westerhoff B, Westfall E, Widmer K, Wright H, Schatz D, Abraham A, Atkinson M, Cintron M, Clare-Salzler M, Ferguson J, Haller M, Hosford J, Mancini D, Rohrs H, Silverstein J, Thomas J, Winter W, Cole G, Cook R, Coy R, Hicks E, Lewis N, Marks J, Pugliese A, Blaschke C, Matheson D, Pugliese A, Sanders-Branca N, Ray Arce LA, Cisneros M, Sabbag S, Moran A, Gibson C, Fife B, Hering B, Kwong C, Leschyshyn J, Nathan B, Pappenfus B, Street A, Boes MA, Peterson Eck S, Finney L, Albright Fischer T, Martin A, Jacqueline Muzamhindo C, Rhodes M, Smith J, Wagner J, Wood B, Becker D, Delallo K, Diaz A, Elnyczky B, Libman I, Pasek B, Riley K, Trucco M, Copemen B, Gwynn D, Toledo F, Rodriguez H, Bollepalli S, Diamond F, Eyth E, Henson D, Lenz A, Shulman D, Raskin P, Adhikari S, Dickson B, Dunnigan E, Lingvay I, Pruneda L, Ramos-Roman M, Raskin P, Rhee C, Richard J, Siegelman M, Sturges D, Sumpter K, White P, Alford M, Arthur J, Aviles-Santa ML, Cordova E, Davis R, Fernandez S, Fordan S, Hardin T, Jacobs A, Kaloyanova P, Lukacova-Zib I, Mirfakhraee S, Mohan A, Noto H, Smith O, Torres N, Wherrett D, Balmer D, Eisel L, Kovalakovska R, Mehan M, Sultan F, Ahenkorah B, Cevallos J, Razack N, Jo Ricci M, Rhode A, Srikandarajah M, Steger R, Russell WE, Black M, Brendle F, Brown A, Moore D, Pittel E, Robertson A, Shannon A, Thomas JW, Herold K, Feldman L, Sherwin R, Tamborlane W, Weinzimer S, Toppari J, Kallio T, Kärkkäinen M, Mäntymäki E, Niininen T, Nurmi B, Rajala P, Romo M, Suomenrinne S, Näntö-Salonen K, Simell O, Simell T, Bosi E, Battaglia M, Bianconi E, Bonfanti R, Grogan P, Laurenzi A, Martinenghi S, Meschi F, Pastore M, Falqui L, Teresa Muscato M, Viscardi M, Bingley P, Castleden H, Farthing N, Loud S, Matthews C, McGhee J, Morgan A, Pollitt J, Elliot-Jones R, Wheaton C, Knip M, Siljander H, Suomalainen H, Colman P, Healy F, Mesfin S, Redl L, Wentworth J, Willis J, Farley M, Harrison L, Perry C, Williams F, Mayo A, Paxton J, Thompson V, Volin L, Fenton C, Carr L, Lemon E, Swank M, Luidens M, Salgam M, Sharma V, Schade D, King C, Carano R, Heiden J, Means N, Holman L, Thomas I, Madrigal D, Muth T, Martin C, Plunkett C, Ramm C, Auchus R, Lane W, Avots E, Buford M, Hale C, Hoyle J, Lane B, Muir A, Shuler S, Raviele N, Ivie E, Jenkins M, Lindsley K, Hansen I, Fadoju D, Felner E, Bode B, Hosey R, Sax J, Jefferies C, Mannering S, Prentis R, She J, Stachura M, Hopkins D, Williams J, Steed L, Asatapova E, Nunez S, Knight S, Dixon P, Ching J, Donner T, Longnecker S, Abel K, Arcara K, Blackman S, Clark L, Cooke D, Plotnick L, Levin P, Bromberger L, Klein K, Sadurska K, Allen C, Michaud D, Snodgrass H, Burghen G, Chatha S, Clark C, Silverberg J, Wittmer C, Gardner J, LeBoeuf C, Bell P, McGlore O, Tennet H, Alba N, Carroll M, Baert L, Beaton H, Cordell E, Haynes A, Reed C, Lichter K, McCarthy P, McCarthy S, Monchamp T, Roach J, Manies S, Gunville F, Marosok L, Nelson T, Ackerman K, Rudolph J, Stewart M, McCormick K, May S, Falls T, Barrett T, Dale K, Makusha L, McTernana C, Penny-Thomas K, Sullivan K, Narendran P, Robbie J, Smith D, Christensen R, Koehler B, Royal C, Arthur T, Houser H, Renaldi J, Watsen S, Wu P, Lyons L, House B, Yu J, Holt H, Nation M, Vickers C, Watling R, Heptulla R, Trast J, Agarwal C, Newell D, Katikaneni R, Gardner C, Del A, Rio A, Logan H, Collier C, Rishton G, Whalley A, Ali S, Ramtoola T, Quattrin L, Mastrandea A, House M, Ecker C, Huang C, Gougeon J, Ho D, Pacuad D, Dunger J, May C, O’Brien C, Acerini B, Salgin A, Thankamony R, Williams J, Buse G, Fuller M, Duclos J, Tricome H, Brown D, Pittard D, Bowlby A, Blue T, Headley S, Bendre K, Lewis K, Sutphin C, Soloranzo J, Puskaric H, Madison M, Rincon M, Carlucci R, Shridharani B, Rusk E, Tessman D, Huffman H, Abrams B, Biederman M, Jones V, Leathers W, Brickman P, Petrie D, Zimmerman J, Howard L, Miller R, Alemzadeh D, Mihailescu R, Melgozza-Walker N, Abdulla C, Boucher-Berry D, Ize-Ludlow R, Levy C, Swenson, Brousell N, Crimmins D, Edler T, Weis C, Schultz D, Rogers D, Latham C, Mawhorter C, Switzer W, Spencer P, Konstantnopoulus S, Broder J, Klein L, Knight L, Szadek G, Welnick B, Thompson R, Hoffman A, Revell J, Cherko K, Carter E, Gilson J, Haines G, Arthur B, Bowen W, Zipf P, Graves R, Lozano D, Seiple K, Spicer A, Chang J, Fregosi J, Harbinson C, Paulson S, Stalters P, Wright D, Zlock A, Freeth J, Victory H, Maheshwari A, Maheshwari T, Holmstrom J, Bueno R, Arguello J, Ahern L, Noreika V, Watson S, Hourse P, Breyer C, Kissel Y, Nicholson M, Pfeifer S, Almazan J, Bajaj M, Quinn K, Funk J, McCance E, Moreno R, Veintimilla A, Wells J, Cook S, Trunnel J, Henske S, Desai K, Frizelis F, Khan R, Sjoberg K, Allen P, Manning G, Hendry B, Taylor S, Jones W, Strader M, Bencomo T, Bailey L, Bedolla C, Roldan C, Moudiotis B, Vaidya C, Anning S, Bunce S, Estcourt E, Folland E, Gordon C, Harrill J, Ireland J, Piper L, Scaife K, Sutton S, Wilkins M, Costelloe J, Palmer L, Casas C, Miller M, Burgard C, Erickson J, Hallanger-Johnson P, Clark W, Taylor A, Lafferty S, Gillett C, Nolan M, Pathak L, Sondrol T, Hjelle S, Hafner J, Kotrba R, Hendrickson A, Cemeroglu T, Symington M, Daniel Y, Appiagyei-Dankah D, Postellon M, Racine L, Kleis K, Barnes S, Godwin H, McCullough K, Shaheen G, Buck L, Noel M, Warren S, Weber S, Parker I, Gillespie B, Nelson C, Frost J, Amrhein E, Moreland A, Hayes J, Peggram J, Aisenberg M, Riordan J, Zasa E, Cummings K, Scott T, Pinto A, Mokashi K, McAssey E, Helden P, Hammond L, Dinning S, Rahman S, Ray C, Dimicri S, Guppy H, Nielsen C, Vogel C, Ariza L, Morales Y, Chang R, Gabbay L, Ambrocio L, Manley R, Nemery W, Charlton P, Smith L, Kerr B, Steindel-Kopp M, Alamaguer D, Liljenquist G, Browning T, Coughenour M, Sulk E, Tsalikan M, Tansey J, Cabbage N. Identical and Nonidentical Twins: Risk and Factors Involved in Development of Islet Autoimmunity and Type 1 Diabetes. Diabetes Care 2019; 42:192-199. [PMID: 30061316 PMCID: PMC6341285 DOI: 10.2337/dc18-0288] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/28/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE There are variable reports of risk of concordance for progression to islet autoantibodies and type 1 diabetes in identical twins after one twin is diagnosed. We examined development of positive autoantibodies and type 1 diabetes and the effects of genetic factors and common environment on autoantibody positivity in identical twins, nonidentical twins, and full siblings. RESEARCH DESIGN AND METHODS Subjects from the TrialNet Pathway to Prevention Study (N = 48,026) were screened from 2004 to 2015 for islet autoantibodies (GAD antibody [GADA], insulinoma-associated antigen 2 [IA-2A], and autoantibodies against insulin [IAA]). Of these subjects, 17,226 (157 identical twins, 283 nonidentical twins, and 16,786 full siblings) were followed for autoantibody positivity or type 1 diabetes for a median of 2.1 years. RESULTS At screening, identical twins were more likely to have positive GADA, IA-2A, and IAA than nonidentical twins or full siblings (all P < 0.0001). Younger age, male sex, and genetic factors were significant factors for expression of IA-2A, IAA, one or more positive autoantibodies, and two or more positive autoantibodies (all P ≤ 0.03). Initially autoantibody-positive identical twins had a 69% risk of diabetes by 3 years compared with 1.5% for initially autoantibody-negative identical twins. In nonidentical twins, type 1 diabetes risk by 3 years was 72% for initially multiple autoantibody-positive, 13% for single autoantibody-positive, and 0% for initially autoantibody-negative nonidentical twins. Full siblings had a 3-year type 1 diabetes risk of 47% for multiple autoantibody-positive, 12% for single autoantibody-positive, and 0.5% for initially autoantibody-negative subjects. CONCLUSIONS Risk of type 1 diabetes at 3 years is high for initially multiple and single autoantibody-positive identical twins and multiple autoantibody-positive nonidentical twins. Genetic predisposition, age, and male sex are significant risk factors for development of positive autoantibodies in twins.
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Affiliation(s)
- Taylor M. Triolo
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Alexandra Fouts
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Laura Pyle
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Liping Yu
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Peter A. Gottlieb
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Andrea K. Steck
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
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Woo S, Brenner N, Chong S, Benz P, Dubin J, Wilson M, Thorne J, Goyal M. 239 Advance Care Planning Among Patients With In-Hospital Cardiac Arrest. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.244] [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: 11/16/2022]
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Loza A, Thorne J, Benadiva C, Nulsen J, Engmann L, Grow D. Larger size of the oocyte cohort does not affect risk of embryo aneuploidy when using next generation sequencing (NGS). Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.755] [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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Thorne J, Loza A, Benadiva C, Nulsen J, Engmann L, Grow D. Mixed stimulation protocols do not improve euploidy rates in embryos tested with next generation sequencing. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.928] [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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Thorne J, Loza A, Kaye L, Nulsen J, Engmann L, Benadiva C, Grow D. Higher rates of mosaic only embryos found in younger patients evaluated by next generation sequencing. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1157] [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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Kaye L, Marsidi A, Rai P, Thorne J, Nulsen J, Engmann L, Benadiva C. Frozen blastocyst transfer outcomes in immediate versus delayed subsequent cycles following GnRH agonist or hCG triggers. J Assist Reprod Genet 2018; 35:669-675. [PMID: 29297113 DOI: 10.1007/s10815-017-1111-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 12/22/2017] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The aim of this study is to analyze clinical pregnancy rates (CPR) and ongoing pregnancy rates (OPR) for frozen embryo transfers (FET) performed with blastocysts in the cycle immediately after GnRH agonist (GnRHa) versus human chorionic gonadotropin (hCG) triggers, with outcomes of delayed FET for comparison. METHODS Retrospective cohort study at a university-affiliated in vitro fertilization (IVF) clinic, including patients undergoing IVF between 2013-16 with a blastocyst FET performed within two menstrual cycles of a previous stimulation cycle and vaginal oocyte retrieval (VOR). FETs included programmed and natural endometrial preparation. Outcome measures were clinical and ongoing pregnancy rates. RESULTS CPR and OPR for 344 FET cycles were similar when comparing immediate and delayed transfer overall (crude CPR 67.5 versus 76.5%, p = 0.11; OPR 57.5 versus 66.7%, p = 0.13), and after stratifying by cycles following hCG trigger (OPR 62.5 versus 66.3%, p = 0.61) and GnRHa trigger (OPR 55.6 versus 64.5%, p = 0.17). When considering a number of predictors for OPR, an adjusted odds ratio (OR) of 1.74 [95% CI 1.00-3.03] approached significance in favor of delayed FET. CONCLUSIONS Regardless of trigger modality, patients can be reassured that pregnancy rates with FET are high in immediate and delayed cycles. However, our study suggests a potential benefit in delaying a cycle before proceeding with FET.
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Affiliation(s)
- Leah Kaye
- Department of Obstetrics and Gynecology, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Audrey Marsidi
- Department of Obstetrics and Gynecology, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Puja Rai
- Department of Obstetrics and Gynecology, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Jeffrey Thorne
- Department of Obstetrics and Gynecology, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - John Nulsen
- Center for Advanced Reproductive Services, 2 Batterson Park Road, Farmington, CT, 06032, USA
| | - Lawrence Engmann
- Center for Advanced Reproductive Services, 2 Batterson Park Road, Farmington, CT, 06032, USA
| | - Claudio Benadiva
- Center for Advanced Reproductive Services, 2 Batterson Park Road, Farmington, CT, 06032, USA.
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Thorne J, Kaye L, Bartolucci A, Benadiva C, Nulsen J, Engmann L. Pregnancy outcomes between euploid and non-tested blastocysts in frozen embryo transfer cycles. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.832] [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]
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Thorne J, Kaye L, Bartolucci A, Benadiva C, Nulsen J, Engmann L. Are pregnancy rates affected by day of blastocyst cryopreservation in single euploid frozen embryo transfer cycles? Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Thorne J, Craffey A, Nulsen J. Detection of a novel maternally inherited deletion on the x chromosome through single nucleotide polymorphism (SNP) microarray testing on products of conception in a patient with recurrent losses and previously normal karyotype. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.02.047] [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: 10/19/2022]
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Thorne J, Kwait C, Morosky C, Luciano D. Predictive Factors for Reoperation in Patients Surgically Treated for Endometriosis. J Minim Invasive Gynecol 2015; 22:S30. [DOI: 10.1016/j.jmig.2015.08.082] [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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Thorne J, Downey P, Mooney EE. Placental pathology associated with small for gestational age infants. Ir Med J 2014; 107:249-250. [PMID: 25282971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Infants with intrauterine growth restriction (IUGR) are at an increased risk of perinatal disease, including death. Many, but not all small for gestational age infants (SGA) have IUGR. Placental disease is an important cause of IUGR, and gross and microscopic examination is critical in explaining such cases. Reports of placentas from infants with a birth weight < 2SD from the mean (approx 3rd centile) born between Jan 2004-Dec 2011 were evaluated. The principal pathology was determined in each case. Where two or more pathologic findings were present, they were ranked as principal and co-existing in terms of severity. There were 69,493 deliveries over the study period. 461 SGA cases were identified. No placenta was available in 44 cases, and 21 cases of known anomalies were excluded, leaving a study group of 396 cases. Pathology potentially causing or contributing to SGA and/or IUGR was identified in 84.1% of cases. Significant co-existing pathology was seen in 88 cases (22%). Placental examination provides key information in understanding abnormal fetal growth.
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Bykerk V, Bingham C, Choy E, Boire G, Haraoui B, Lin D, Pope J, Thorne J, Hitchon C, Tin D, Keystone E, Bartlett S. FRI0103 The Omeract Preliminary Flare Questionnaire (PFQ) is Responsive to Change and Able to Detect Clinically Important Worsening Indicating Need for Treatment Change in the Canadian Early Arthritis Cohort. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Trusko B, Thorne J, Jabs D, Belfort R, Dick A, Gangaputra S, Nussenblatt R, Okada A, Rosenbaum J. The Standardization of Uveitis Nomenclature (SUN) Project. Development of a clinical evidence base utilizing informatics tools and techniques. Methods Inf Med 2013; 52:259-S6. [PMID: 23392263 PMCID: PMC8728398 DOI: 10.3414/me12-01-0063] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 12/18/2012] [Indexed: 08/11/2023]
Abstract
BACKGROUND Given the recent increased focus on evidence-based medicine, it is critical that diseases and syndromes have accurate and complete descriptions, including standardized and widely accepted terminologies. Standardizing these descriptions and terminologies is necessary to develop tools such as computerized data entry forms and classification criteria. This need is especially true for diseases that are relatively uncommon, such as uveitis. OBJECTIVES To develop a standardized and internationally accepted terminology for the field of uveitis. METHODS The Standardization of Uveitis Nomenclature (SUN) Working Group (WG) is an international group of 79 uveitis experts from 18 countries and 62 clinical centers. Initial terminology was developed utilizing a "modified" green field approach, which was enhanced through web-based surveys and teleconferences via a "modified" Delphi technique. Terms were mapped provisionally into ontologic dimensions for each syndrome. The Working Group then met and utilized nominal group techniques as a formalized method of finalizing the mappings. RESULTS Mapping of terms into dimensions to describe 28 major uveitic diseases was confirmed using nominal group techniques (achieving super-majority consensus) for each of the diseases at a meeting of the entire WG. CONCLUSIONS The SUN WG utilized an informatics-based approach to develop a standardized and internationally accepted terminology for the uveitides.
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Affiliation(s)
- B Trusko
- Mount Sinai School of Medicine, Ophthalmology, One Gustave L Levy Place, Box 1183, New York, NY10029-6574, USA.
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Tajuddin T, Razif S, Dhar R, Thorne J, Murray FE. Clinical presentation of adult coeliac disease. Ir Med J 2011; 104:20-22. [PMID: 21387881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The mode of presentation of coeliac disease has been changing to more atypical or silent disease. Few studies described the clinical presentation of adult coeliac disease in Ireland in recent years. We retrospectively collected the clinical data for all patients who had a diagnosis of coeliac disease made in our centre between January 07 and December 08. Forty seven adults, predominantly females (n = 30), had a confirmed diagnosis of coeliac disease made during the study period. In our patient cohort, the presenting symptom was diarrhoea in 19 (40%) patients, while 16 patients (34%) did not have any G.I. symptoms, 10 (21%) presented with anaemia. Females presented at a significantly younger age compared to males, with median ages at diagnosis of 44.5 and 57 years, respectively (p = 0.04). Females also presented more commonly with non G.I. symptoms (p = 0.07). The reasons behind this gender difference need further study.
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Affiliation(s)
- T Tajuddin
- Department of Gastroenterology, Beaumont Hospital, Beaumont, Dublin 9
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Marselli L, Thorne J, Dahiya S, Sgroi DC, Sharma A, Bonner-Weir S, Marchetti P, Weir GC. Gene expression profiles of Beta-cell enriched tissue obtained by laser capture microdissection from subjects with type 2 diabetes. PLoS One 2010; 5:e11499. [PMID: 20644627 PMCID: PMC2903480 DOI: 10.1371/journal.pone.0011499] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Accepted: 06/06/2010] [Indexed: 12/26/2022] Open
Abstract
Background Changes in gene expression in pancreatic beta-cells from type 2 diabetes (T2D) should provide insights into their abnormal insulin secretion and turnover. Methodology/Principal Findings Frozen sections were obtained from cadaver pancreases of 10 control and 10 T2D human subjects. Beta-cell enriched samples were obtained by laser capture microdissection (LCM). RNA was extracted, amplified and subjected to microarray analysis. Further analysis was performed with DNA-Chip Analyzer (dChip) and Gene Set Enrichment Analysis (GSEA) software. There were changes in expression of genes linked to glucotoxicity. Evidence of oxidative stress was provided by upregulation of several metallothionein genes. There were few changes in the major genes associated with cell cycle, apoptosis or endoplasmic reticulum stress. There was differential expression of genes associated with pancreatic regeneration, most notably upregulation of members of the regenerating islet gene (REG) family and metalloproteinase 7 (MMP7). Some of the genes found in GWAS studies to be related to T2D were also found to be differentially expressed. IGF2BP2, TSPAN8, and HNF1B (TCF2) were upregulated while JAZF1 and SLC30A8 were downregulated. Conclusions/Significance This study made possible by LCM has identified many novel changes in gene expression that enhance understanding of the pathogenesis of T2D.
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Affiliation(s)
- Lorella Marselli
- Section on Islet Transplantation and Cell Biology, Research Division, Joslin Diabetes Center and the Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Jeffrey Thorne
- Section on Islet Transplantation and Cell Biology, Research Division, Joslin Diabetes Center and the Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Sonika Dahiya
- Molecular Pathology Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Dennis C. Sgroi
- Molecular Pathology Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Arun Sharma
- Section on Islet Transplantation and Cell Biology, Research Division, Joslin Diabetes Center and the Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Susan Bonner-Weir
- Section on Islet Transplantation and Cell Biology, Research Division, Joslin Diabetes Center and the Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Piero Marchetti
- Section of Endocrinology and Metabolism of Organ Transplantation, Department of Endocrinology and Metabolism, University of Pisa, Pisa, Italy
| | - Gordon C. Weir
- Section on Islet Transplantation and Cell Biology, Research Division, Joslin Diabetes Center and the Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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Downes MR, Thorne J, Tengku Khalid TN, Hassan HA, Leader M. Profile of sudden death in an adult population (1999-2008). Ir Med J 2010; 103:183-184. [PMID: 20669604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Sudden death is the sudden and unexpected death of an individual within 24 hours of symptom onset. The vast majority of these cases are found, at autopsy, to be due to underlying ischaemic cardiac disease. We retrospectively reviewed all adult post mortems performed at Beaumont Hospital over a decade (1999-2008). Our aim was to identify all sudden death cases (natural and accidental) and subclassify them according to age profile and organ system involved. We identified 1230 sudden death cases in the review period with 775 (63%) deaths attributable to ischaemic heart disease. The rate of sudden death remained constant over the decade with 663 (54%) deaths occurring in the first five years. Our negative autopsy rate was 2.8% corresponding to 35 cases. This is the first Irish study to retrospectively review all adult sudden deaths within a defined catchment area and analyse them as outlined above.
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Affiliation(s)
- M R Downes
- Department of Histopathology, Beaumont Hospital, Beaumont, Dublin 9.
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Böni-Schnetzler M, Thorne J, Parnaud G, Marselli L, Ehses JA, Kerr-Conte J, Pattou F, Halban PA, Weir GC, Donath MY. Increased interleukin (IL)-1beta messenger ribonucleic acid expression in beta -cells of individuals with type 2 diabetes and regulation of IL-1beta in human islets by glucose and autostimulation. J Clin Endocrinol Metab 2008; 93:4065-74. [PMID: 18664535 PMCID: PMC2579638 DOI: 10.1210/jc.2008-0396] [Citation(s) in RCA: 242] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
CONTEXT Elevated glucose levels impair islet function and survival, and it has been proposed that intraislet expression of IL-1beta contributes to glucotoxicity. OBJECTIVE The objective was to investigate IL-1beta mRNA expression in near-pure beta-cells of patients with type 2 diabetes (T2DM) and study the regulation of IL-1beta by glucose in isolated human islets. METHODS Laser capture microdissection was performed to isolate beta-cells from pancreas sections of 10 type 2 diabetic donors and nine controls, and IL-1beta mRNA expression was analyzed using gene arrays and PCR. Cultured human islets and fluorescence-activated cell sorter-purified human beta-cells were used to study the regulation of IL-1beta expression by glucose and IL-1beta. RESULTS Gene array analysis of RNA from beta-cells of individuals with T2DM revealed increased expression of IL-1beta mRNA. Real-time PCR confirmed increased IL-1beta expression in six of 10 T2DM samples, with minimal or no expression in nine control samples. In cultured human islets, IL-1beta mRNA and protein expression was induced by high glucose and IL-1beta autostimulation and decreased by the IL-1 receptor antagonist IL-1Ra. The glucose response was negatively correlated with basal IL-1beta expression levels. Autostimulation was transient and nuclear factor-kappaB dependent. Glucose-induced IL-1beta was biologically active and stimulated IL-8 release. Low picogram per milliliter concentrations of IL-1beta up-regulated inflammatory factors IL-8 and IL-6. CONCLUSION Evidence that IL-1beta mRNA expression is up-regulated in beta-cells of patients with T2DM is presented, and glucose-promoted IL-1beta autostimulation may be a possible contributor.
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Marselli L, Thorne J, Ahn YB, Omer A, Sgroi DC, Libermann T, Otu HH, Sharma A, Bonner-Weir S, Weir GC. Gene expression of purified beta-cell tissue obtained from human pancreas with laser capture microdissection. J Clin Endocrinol Metab 2008; 93:1046-53. [PMID: 18073315 PMCID: PMC2266961 DOI: 10.1210/jc.2007-0931] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Human beta-cell gene profiling is a powerful tool for understanding beta-cell biology in normal and pathological conditions. Assessment is complicated when isolated islets are studied because of contamination by non-beta-cells and the trauma of the isolation procedure. OBJECTIVE The objective was to use laser capture microdissection (LCM) of human beta-cells from pancreases of cadaver donors and compare their gene expression with that of handpicked isolated islets. DESIGN Endogenous autofluorescence of beta-cells facilitated procurement of purified beta-cell tissue from frozen pancreatic sections with LCM. Gene expression profiles of three microdissected beta-cell samples and three isolated islet preparations were obtained. The array data were normalized using DNA-Chip Analyzer software (Harvard School of Public Health, Boston, MA), and the lower confidence bound evaluated differentially expressed genes. Real-time PCR was performed on selected acinar genes and on the duct cell markers, carbonic anhydrase II and keratin 19. RESULTS Endogenous autofluorescence facilitates the microdissection of beta-cell rich tissue in human pancreas. When compared with array profiles of purified beta-cell tissue, with lower confidence bound set at 1.2, there were 4560 genes up-regulated and 1226 genes down-regulated in the isolated islets. Among the genes up-regulated in isolated islets were pancreatic acinar and duct genes, chemokine genes, and genes associated with hypoxia, apoptosis, and stress. Quantitative RT-PCR confirmed the differential expression of acinar gene transcripts and the duct marker carbonic anhydrase II in isolated islets. CONCLUSION LCM makes it possible to obtain beta-cell enriched tissue from human pancreas sections without the trauma and ischemia of islet isolation.
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Affiliation(s)
- Lorella Marselli
- Section on Islet Transplantation and Cell Biology, Joslin Diabetes Center, One Joslin Place, Boston, Massachusetts 02215, USA
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Abstract
Arachnoid cysts are a common incidental finding on routine brain imaging and, for the most part, their presence is uneventful. Occasionally they may be associated with haemorrhage into the subdural compartment. Rarer still is simple rupture of the contents of the arachnoid cyst into the extra-axial space. MRI can help distinguish between these two rare occurrences--an important distinction to make as this may assist in directing the treating clinician toward the most appropriate management plan.
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Affiliation(s)
- C Offiah
- Department of Neuroradiology, Hope Hospital, Salford Royal Hospitals NHS Trust, Salford, Manchester M6 8HD, UK
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Affiliation(s)
- P Leach
- Department of Paediatric Neurosurgery, Royal Manchester Children's Hospital, Hospital Road, Pendlebury, Manchester, USA.
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Maye P, Becker S, Siemen H, Thorne J, Byrd N, Carpentino J, Grabel L. Hedgehog signaling is required for the differentiation of ES cells into neurectoderm. Dev Biol 2004; 265:276-90. [PMID: 14697369 DOI: 10.1016/j.ydbio.2003.09.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [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: 01/17/2023]
Abstract
Mouse embryonic stem cells can differentiate in vitro into cells of the nervous system, neurons and glia. This differentiation mimics stages observed in vivo, including the generation of primitive ectoderm and neurectoderm in embryoid body culture. We demonstrate here that embryonic stem cell lines mutant for components of the Hedgehog signaling cascade are deficient at generating neurectoderm-containing embryoid bodies. The embryoid bodies derived from mutant cells are also unable to respond to retinoic acid treatment by producing nestin-positive neural stem cells, a response observed in cultures of heterozygous cells, and contain cores apparently arrested at the primitive ectoderm stage. The mutant cultures are also deficient in their capacity to differentiate into mature neurons and glia. These data are consistent with a role for Hedgehog signaling in generating neurectoderm capable of producing the appropriate neuronal and glial progenitors in ES cell culture.
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Affiliation(s)
- Peter Maye
- Biology Department, Wesleyan University, Middletown, CT 06459-0170, USA
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Elsheikh G, Ibrahim SA, Mahgoub F, Thorne J, Lewis M. Cerebrospinal Fluid Res 2004; 1:S48. [DOI: 10.1186/1743-8454-1-s1-s48] [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: 11/10/2022] Open
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Christodoulou S, Kamran M, Thorne J, Lewis M, Vause S. Cerebrospinal Fluid Res 2004; 1:S60. [DOI: 10.1186/1743-8454-1-s1-s60] [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: 11/10/2022] Open
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Patel TR, Bannister CM, Thorne J. A study of prenatal ultrasound and postnatal magnetic imaging in the diagnosis of central nervous system abnormalities. Eur J Pediatr Surg 2003; 13 Suppl 1:S18-22. [PMID: 14758562 DOI: 10.1055/s-2003-44752] [Citation(s) in RCA: 12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Accurate prenatal diagnosis of central nervous system (CNS) abnormalities is essential in counselling parents, as they are the most common developmental abnormalities causing considerable mortality. Currently, the standard in prenatal imaging is ultrasound scanning (USS). The introduction of fast acquisition magnetic resonance imaging (MRI) has lead to increased diagnostic confidence and information available for parents. Frequently USS initially identifies CNS abnormalities as ventriculomegaly alone. However, it is known that ventriculomegaly is commonly associated with other CNS pathology, which may adversely affect the prognosis. As MRI has superior soft tissue resolution and can be used at any time postnatally, it is expected to identify disorders of myelination that may result from prenatal ventriculomegaly. This study will evaluate the role of MRI as a postnatal imaging tool in patients that had a prenatal USS diagnosis of isolated ventriculomegaly. This was a retrospective review of patient notes and scan reports. The postnatal MRI study group consisted of 9 patients that had been diagnosed initially with prenatal isolated ventriculomegaly on USS, and followed up with postnatal MRI (cases of spina bifida and Dandy-Walker malformations were excluded). Findings from the scan reports were recorded and analysed. Both MRI and prenatal USS gave the same information in 55.6 % of the patients. In the remaining 44.4 %, MRI added to the information provided by the prenatal USS. An interesting finding was that MRI missed a small fluid-filled cyst and an arachnoid cyst in 2 cases. 55.6 % of patients went on to develop other CNS abnormalities prenatally, whereas 33.3 % showed prenatal regression of VM with no other pathology. 11.1 % showed postnatal persistence of isolated VM. As USS has the advantage of being cheap and easy to perform, it will remain as the primary imaging tool in obstetric care. MRI can provide significant additional information that can affect parent counselling, prenatal intervention, and postnatal management. Postnatally, MRI can give some idea of prognosis by evaluating myelination patterns, which is not possible with USS.
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Affiliation(s)
- T R Patel
- Fetal Management Unit, St. Mary's Hospital, Manchester, UK
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Affiliation(s)
- T K Smith
- Westat, Inc., 1650 Research Blvd., Rockville, MD 20850. USA.
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Thiboutot D, Bayne E, Thorne J, Gilliland K, Flanagan J, Shao Q, Light J, Helm K. Immunolocalization of 5alpha-reductase isozymes in acne lesions and normal skin. Arch Dermatol 2000; 136:1125-9. [PMID: 10987868 DOI: 10.1001/archderm.136.9.1125] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Dihydrotestosterone mediates androgen-dependent diseases, such as acne, hirsutism, and androgenetic alopecia. This hormone is produced from testosterone by the 5alpha-reductase enzyme. There are 2 isozymes of 5alpha-reductase (types 1 and 2) that differ in their localization within the body and even within the skin. Activity of the type 1 isozyme predominates in sebaceous glands, where it may be involved in regulation of sebum production. Since specific inhibition of 5alpha-reductase type 1 may represent a novel therapeutic approach to acne, it is important to define the localization of these isozymes in normal sebaceous follicles and acne lesions. OBSERVATIONS Skin biopsy specimens were obtained from the backs of 11 subjects: 8 with acne and 3 without acne. Sections of normal follicles, open comedones, closed comedones, and inflammatory lesions were incubated with antibodies to types 1 and 2 5alpha-reductase. In all samples, the type 1 antibody localized specifically to sebaceous glands, and the type 2 antibody localized to the companion layer of the hair follicle (the innermost layer of the outer root sheath) and granular layer of the epidermis. Localization of the type 2 isozyme was also noted within the walls of open and closed comedones and in endothelial cells from sections of inflammatory lesions. CONCLUSIONS The immunolocalization of 5alpha-reductase isozymes in normal sebaceous follicles and acne follicles is similar to the pattern described in terminal hair follicles and corresponds with the findings of biochemical studies that have demonstrated predominance of type 1 activity in sebaceous glands. The function of type 2 5alpha-reductase in comedones or endothelial cells in inflammatory lesions is unknown.
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Affiliation(s)
- D Thiboutot
- Section of Dermatology, UPC-2, Room 4300, Pennsylvania State University College of Medicine, 500 University Dr, Hershey, PA 17033, USA.
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Abstract
A girl aged 13 years presented with spontaneous intracerebral haemorrhage. Initially, no cause could be found but she was later found to have a low grade pilocytic astrocytoma. This very uncommon presentation was not considered before surgery.
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Affiliation(s)
- A Golash
- Royal Manchester Children's Hospital, UK
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Foret F, Müller O, Thorne J, Götzinger W, Karger BL. Analysis of protein fractions by micropreparative capillary isoelectric focusing and matrix-assisted laser desorption time-of-flight mass spectrometry. J Chromatogr A 1995; 716:157-66. [PMID: 8574384 DOI: 10.1016/0021-9673(95)00621-s] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this study, the use of capillary isoelectric focusing (cIEF) as a micropreparative tool for protein analysis by matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI-TOF-MS) is demonstrated. A newly designed, automated, collection interface equipped with a fiber-optic UV detector and a sheath flow connection was employed for collection of protein fractions. Multiple fractions were collected during a single cIEF run and further analyzed by MALDI-TOF-MS for mass assignment. The feasibility of the method was tested with a mixture of model proteins with different isoelectric points and molecular masses, and with variants of human hemoglobins differing in pI, but with negligible difference in M(r). Some practical considerations of the collection procedure and subsequent TOF analysis are presented.
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Affiliation(s)
- F Foret
- Barnett Institute, Northeastern University, Boston, MA 02115, USA
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Abstract
Previous work in our laboratory has demonstrated that tissue expanders are permeable to lidocaine. In this two-part study, we assessed the in vitro lidocaine diffusion in the following five common tissue expanders: Dow Corning, McGhan, Cox-Uphoff, Hyer-Schulte (Mentor), and Surgitek. In part 1, we demonstrated that wall thickness appeared to be the major determinant for diffusion. Part 2 reports an in vivo study of lidocaine diffusion from tissue expanders used for breast reconstruction. We initially determined that there is incomplete mixing between the valve and connecting tubing and the contents of the expanders, over the period of 1 week. We subsequently examined the lidocaine diffusion from seven tissue expanders placed in a submuscular position for breast reconstruction. The rate of lidocaine diffusion was highly variable, but on average was about 3% per day.
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Affiliation(s)
- D E Berman
- Department of Plastic Surgery, Medical University, Spartanburg, SC
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Kehler M, Albrechtsson U, Alwmark A, Larusdottir H, Ribbe E, Svahn G, Thorne J. Intra-operative digital angiography as a control of the in situ saphenous vein by-pass grafts. Acta Radiol 1988. [DOI: 10.3109/02841858809171956] [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]
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