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Abuter R, Allouche F, Amorim A, Bailet C, Berdeu A, Berger JP, Berio P, Bigioli A, Boebion O, Bolzer ML, Bonnet H, Bourdarot G, Bourget P, Brandner W, Cao Y, Conzelmann R, Comin M, Clénet Y, Courtney-Barrer B, Davies R, Defrère D, Delboulbé A, Delplancke-Ströbele F, Dembet R, Dexter J, de Zeeuw PT, Drescher A, Eckart A, Édouard C, Eisenhauer F, Fabricius M, Feuchtgruber H, Finger G, Förster Schreiber NM, Garcia P, Garcia Lopez R, Gao F, Gendron E, Genzel R, Gil JP, Gillessen S, Gomes T, Gonté F, Gouvret C, Guajardo P, Guieu S, Hackenberg W, Haddad N, Hartl M, Haubois X, Haußmann F, Heißel G, Henning T, Hippler S, Hönig SF, Horrobin M, Hubin N, Jacqmart E, Jocou L, Kaufer A, Kervella P, Kolb J, Korhonen H, Lacour S, Lagarde S, Lai O, Lapeyrère V, Laugier R, Le Bouquin JB, Leftley J, Léna P, Lewis S, Liu D, Lopez B, Lutz D, Magnard Y, Mang F, Marcotto A, Maurel D, Mérand A, Millour F, More N, Netzer H, Nowacki H, Nowak M, Oberti S, Ott T, Pallanca L, Paumard T, Perraut K, Perrin G, Petrov R, Pfuhl O, Pourré N, Rabien S, Rau C, Riquelme M, Robbe-Dubois S, Rochat S, Salman M, Sanchez-Bermudez J, Santos DJD, Scheithauer S, Schöller M, Schubert J, Schuhler N, Shangguan J, Shchekaturov P, Shimizu TT, Sevin A, Soulez F, Spang A, Stadler E, Sternberg A, Straubmeier C, Sturm E, Sykes C, Tacconi LJ, Tristram KRW, Vincent F, von Fellenberg S, Uysal S, Widmann F, Wieprecht E, Wiezorrek E, Woillez J, Zins G. A dynamical measure of the black hole mass in a quasar 11 billion years ago. Nature 2024; 627:281-285. [PMID: 38286342 DOI: 10.1038/s41586-024-07053-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/09/2024] [Indexed: 01/31/2024]
Abstract
Tight relationships exist in the local Universe between the central stellar properties of galaxies and the mass of their supermassive black hole (SMBH)1-3. These suggest that galaxies and black holes co-evolve, with the main regulation mechanism being energetic feedback from accretion onto the black hole during its quasar phase4-6. A crucial question is how the relationship between black holes and galaxies evolves with time; a key epoch to examine this relationship is at the peaks of star formation and black hole growth 8-12 billion years ago (redshifts 1-3)7. Here we report a dynamical measurement of the mass of the black hole in a luminous quasar at a redshift of 2, with a look back in time of 11 billion years, by spatially resolving the broad-line region (BLR). We detect a 40-μas (0.31-pc) spatial offset between the red and blue photocentres of the Hα line that traces the velocity gradient of a rotating BLR. The flux and differential phase spectra are well reproduced by a thick, moderately inclined disk of gas clouds within the sphere of influence of a central black hole with a mass of 3.2 × 108 solar masses. Molecular gas data reveal a dynamical mass for the host galaxy of 6 × 1011 solar masses, which indicates an undermassive black hole accreting at a super-Eddington rate. This suggests a host galaxy that grew faster than the SMBH, indicating a delay between galaxy and black hole formation for some systems.
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Affiliation(s)
- R Abuter
- European Southern Observatory, Garching, Germany
| | - F Allouche
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - A Amorim
- Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
- CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa, Portugal
| | - C Bailet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - A Berdeu
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - J-P Berger
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - P Berio
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - A Bigioli
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - O Boebion
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - M-L Bolzer
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
- Department of Physics, Technical University Munich, Garching, Germany
- Univ. Lyon, Univ. Lyon 1, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, Saint-Genis-Laval, France
| | - H Bonnet
- European Southern Observatory, Garching, Germany
| | - G Bourdarot
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - P Bourget
- European Southern Observatory, Santiago, Chile
| | - W Brandner
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - Y Cao
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - R Conzelmann
- European Southern Observatory, Garching, Germany
| | - M Comin
- European Southern Observatory, Garching, Germany
| | - Y Clénet
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - B Courtney-Barrer
- European Southern Observatory, Santiago, Chile
- Research School of Astronomy and Astrophysics, College of Science, Australian National University, Canberra, Australian Capital Territory, Australia
| | - R Davies
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - D Defrère
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - A Delboulbé
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | | | - R Dembet
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - J Dexter
- Department of Astrophysical & Planetary Sciences, JILA, University of Colorado Boulder, Boulder, CO, USA
| | | | - A Drescher
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - A Eckart
- Max Planck Institute for Radio Astronomy, Bonn, Germany
- 1st Institute of Physics, University of Cologne, Cologne, Germany
| | - C Édouard
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - F Eisenhauer
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - M Fabricius
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - H Feuchtgruber
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - G Finger
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | | | - P Garcia
- CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa, Portugal
- Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - R Garcia Lopez
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - F Gao
- Max Planck Institute for Radio Astronomy, Bonn, Germany
| | - E Gendron
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - R Genzel
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
- Departments of Physics, University of California, Berkeley, Berkeley, CA, USA
- Department of Astronomy, University of California, Berkeley, Berkeley, CA, USA
| | - J P Gil
- European Southern Observatory, Santiago, Chile
| | - S Gillessen
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - T Gomes
- CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa, Portugal
- Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - F Gonté
- European Southern Observatory, Garching, Germany
| | - C Gouvret
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - P Guajardo
- European Southern Observatory, Santiago, Chile
| | - S Guieu
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - W Hackenberg
- European Southern Observatory, Garching, Germany
| | - N Haddad
- European Southern Observatory, Santiago, Chile
| | - M Hartl
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - X Haubois
- European Southern Observatory, Santiago, Chile
| | - F Haußmann
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - G Heißel
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
- Advanced Concepts Team, European Space Agency, TEC-SF, ESTEC, Noordwijk, The Netherlands
| | - Th Henning
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - S Hippler
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - S F Hönig
- School of Physics and Astronomy, University of Southampton, Southampton, UK
| | - M Horrobin
- 1st Institute of Physics, University of Cologne, Cologne, Germany
| | - N Hubin
- European Southern Observatory, Garching, Germany
| | - E Jacqmart
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - L Jocou
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - A Kaufer
- European Southern Observatory, Santiago, Chile
| | - P Kervella
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - J Kolb
- European Southern Observatory, Garching, Germany
| | - H Korhonen
- European Southern Observatory, Santiago, Chile
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - S Lacour
- European Southern Observatory, Garching, Germany
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - S Lagarde
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - O Lai
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - V Lapeyrère
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - R Laugier
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | | | - J Leftley
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - P Léna
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - S Lewis
- European Southern Observatory, Garching, Germany
| | - D Liu
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - B Lopez
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - D Lutz
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - Y Magnard
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - F Mang
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
- Department of Physics, Technical University Munich, Garching, Germany
| | - A Marcotto
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - D Maurel
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - A Mérand
- European Southern Observatory, Garching, Germany
| | - F Millour
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - N More
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - H Netzer
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
| | - H Nowacki
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - M Nowak
- Institute of Astronomy, University of Cambridge, Cambridge, UK
| | - S Oberti
- European Southern Observatory, Garching, Germany
| | - T Ott
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - L Pallanca
- European Southern Observatory, Santiago, Chile
| | - T Paumard
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - K Perraut
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - G Perrin
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - R Petrov
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - O Pfuhl
- European Southern Observatory, Garching, Germany
| | - N Pourré
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - S Rabien
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - C Rau
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - M Riquelme
- European Southern Observatory, Garching, Germany
| | - S Robbe-Dubois
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - S Rochat
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - M Salman
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - J Sanchez-Bermudez
- Max Planck Institute for Astronomy, Heidelberg, Germany
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - D J D Santos
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - S Scheithauer
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - M Schöller
- European Southern Observatory, Garching, Germany
| | - J Schubert
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - N Schuhler
- European Southern Observatory, Santiago, Chile
| | - J Shangguan
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | | | - T T Shimizu
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany.
| | - A Sevin
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - F Soulez
- Univ. Lyon, Univ. Lyon 1, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, Saint-Genis-Laval, France
| | - A Spang
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - E Stadler
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - A Sternberg
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
- Center for Computational Astrophysics, Flatiron Institute, New York, NY, USA
| | - C Straubmeier
- 1st Institute of Physics, University of Cologne, Cologne, Germany
| | - E Sturm
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - C Sykes
- School of Physics and Astronomy, University of Southampton, Southampton, UK
| | - L J Tacconi
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | | | - F Vincent
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | | | - S Uysal
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - F Widmann
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - E Wieprecht
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - E Wiezorrek
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - J Woillez
- European Southern Observatory, Garching, Germany
| | - G Zins
- European Southern Observatory, Garching, Germany
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Szecel Z, Berger JP, Lambeaux G. [The complete dislocation of the talus or «missing talus».]. Rev Med Liege 2021; 76:837-839. [PMID: 34881824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The complete dislocation of the talus or «missing talus» corresponds to a simultaneous dislocation of the tibiotalar, talocalcaneal and talonavicular joints, without associated talar fracture. This lesion occurs as part of high energy trauma and accounts for 3 to 5 % of talus injuries. It is most frequently anterolateral and in more than 75 % of cases, this dislocation is open. Among the soft tissue lesions that are often associated with the dislocation, vascular lesions leading to avascular necrosis of the talus are found in almost 100 % of cases. This necrosis is generally well tolerated by the patient. A conservative treatment by reimplantation of the talus after debridement of the site should be performed as a first-line treatment as fast as possible. When the avascular necrosis of the talus is not well tolerated by the patient, a talectomy associated with tibiocalcaneal arthrodesis can be performed as a secondary procedure. Talectomy alone should not be done.
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Affiliation(s)
- Z Szecel
- ) Service de Chirurgie orthopédique, CHC Mont-légia, Liège, Belgique
| | - J P Berger
- ) Service de Chirurgie orthopédique, CHC Mont-légia, Liège, Belgique
| | - G Lambeaux
- ) Service de Chirurgie orthopédique, CHC Mont-légia, Liège, Belgique
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3
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Amorim A, Bauböck M, Berger JP, Brandner W, Clénet Y, Coudé du Foresto V, de Zeeuw PT, Dexter J, Duvert G, Ebert M, Eckart A, Eisenhauer F, Förster Schreiber NM, Garcia P, Gao F, Gendron E, Genzel R, Gillessen S, Habibi M, Haubois X, Henning T, Hippler S, Horrobin M, Hubert Z, Jiménez Rosales A, Jocou L, Kervella P, Lacour S, Lapeyrère V, Le Bouquin JB, Léna P, Ott T, Paumard T, Perraut K, Perrin G, Pfuhl O, Rabien S, Rodríguez-Coira G, Rousset G, Scheithauer S, Sternberg A, Straub O, Straubmeier C, Sturm E, Tacconi LJ, Vincent F, von Fellenberg S, Waisberg I, Widmann F, Wieprecht E, Wiezorrek E, Yazici S. Test of the Einstein Equivalence Principle near the Galactic Center Supermassive Black Hole. Phys Rev Lett 2019; 122:101102. [PMID: 30932663 DOI: 10.1103/physrevlett.122.101102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Indexed: 06/09/2023]
Abstract
During its orbit around the four million solar mass black hole Sagittarius A* the star S2 experiences significant changes in gravitational potential. We use this change of potential to test one part of the Einstein equivalence principle: the local position invariance (LPI). We study the dependency of different atomic transitions on the gravitational potential to give an upper limit on violations of the LPI. This is done by separately measuring the redshift from hydrogen and helium absorption lines in the stellar spectrum during its closest approach to the black hole. For this measurement we use radial velocity data from 2015 to 2018 and combine it with the gravitational potential at the position of S2, which is calculated from the precisely known orbit of S2 around the black hole. This results in a limit on a violation of the LPI of |β_{He}-β_{H}|=(2.4±5.1)×10^{-2}. The variation in potential that we probe with this measurement is six magnitudes larger than possible for measurements on Earth, and a factor of 10 larger than in experiments using white dwarfs. We are therefore testing the LPI in a regime where it has not been tested before.
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Affiliation(s)
- A Amorim
- Universidade de Lisboa-Faculdade de Ciências, Campo Grande, 1749-016 Lisboa, Portugal
- CENTRA-Centro de Astrofísica e Gravitação, IST, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - M Bauböck
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - J P Berger
- Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - W Brandner
- Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
| | - Y Clénet
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - V Coudé du Foresto
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - P T de Zeeuw
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
- Sterrewacht Leiden, Leiden University, Postbus 9513, 2300 RA Leiden, Netherlands
| | - J Dexter
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - G Duvert
- Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - M Ebert
- Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
| | - A Eckart
- 1st Institute of Physics, University of Cologne, Zülpicher Strae 77, 50937 Cologne, Germany
- Max Planck Institute for Radio Astronomy, Auf dem Hügel 69, 53121 Bonn, Germany
| | - F Eisenhauer
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - N M Förster Schreiber
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - P Garcia
- Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- European Southern Observatory, Casilla 19001, Santiago 19, Chile
- CENTRA-Centro de Astrofísica e Gravitação, IST, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - F Gao
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - E Gendron
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - R Genzel
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
- Departments of Physics and Astronomy, Le Conte Hall, University of California, Berkeley, California 94720, USA
| | - S Gillessen
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - M Habibi
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - X Haubois
- European Southern Observatory, Casilla 19001, Santiago 19, Chile
| | - Th Henning
- Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
| | - S Hippler
- Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
| | - M Horrobin
- 1st Institute of Physics, University of Cologne, Zülpicher Strae 77, 50937 Cologne, Germany
| | - Z Hubert
- Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - A Jiménez Rosales
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - L Jocou
- Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - P Kervella
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - S Lacour
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - V Lapeyrère
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - J-B Le Bouquin
- Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - P Léna
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - T Ott
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - T Paumard
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - K Perraut
- Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - G Perrin
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - O Pfuhl
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - S Rabien
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - G Rodríguez-Coira
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - G Rousset
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - S Scheithauer
- Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
| | - A Sternberg
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
- Center for Computational Astrophysics, Flatiron Institute, 162 5th Ave., New York, New York 10010, USA
| | - O Straub
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - C Straubmeier
- 1st Institute of Physics, University of Cologne, Zülpicher Strae 77, 50937 Cologne, Germany
| | - E Sturm
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - L J Tacconi
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - F Vincent
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, University Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
| | - S von Fellenberg
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - I Waisberg
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - F Widmann
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - E Wieprecht
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - E Wiezorrek
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
| | - S Yazici
- Max Planck Institute for extraterrestrial Physics, Giessenbachstrae 1, 85748 Garching, Germany
- 1st Institute of Physics, University of Cologne, Zülpicher Strae 77, 50937 Cologne, Germany
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4
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Paladini C, Baron F, Jorissen A, Le Bouquin JB, Freytag B, Van Eck S, Wittkowski M, Hron J, Chiavassa A, Berger JP, Siopis C, Mayer A, Sadowski G, Kravchenko K, Shetye S, Kerschbaum F, Kluska J, Ramstedt S. Large granulation cells on the surface of the giant star π 1 Gruis. Nature 2018; 553:310-312. [PMID: 29258298 DOI: 10.1038/nature25001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 10/24/2017] [Indexed: 11/09/2022]
Abstract
Convection plays a major part in many astrophysical processes, including energy transport, pulsation, dynamos and winds on evolved stars, in dust clouds and on brown dwarfs. Most of our knowledge about stellar convection has come from studying the Sun: about two million convective cells with typical sizes of around 2,000 kilometres across are present on the surface of the Sun-a phenomenon known as granulation. But on the surfaces of giant and supergiant stars there should be only a few large (several tens of thousands of times larger than those on the Sun) convective cells, owing to low surface gravity. Deriving the characteristic properties of convection (such as granule size and contrast) for the most evolved giant and supergiant stars is challenging because their photospheres are obscured by dust, which partially masks the convective patterns. These properties can be inferred from geometric model fitting, but this indirect method does not provide information about the physical origin of the convective cells. Here we report interferometric images of the surface of the evolved giant star π1 Gruis, of spectral type S5,7. Our images show a nearly circular, dust-free atmosphere, which is very compact and only weakly affected by molecular opacity. We find that the stellar surface has a complex convective pattern with an average intensity contrast of 12 per cent, which increases towards shorter wavelengths. We derive a characteristic horizontal granule size of about 1.2 × 1011 metres, which corresponds to 27 per cent of the diameter of the star. Our measurements fall along the scaling relations between granule size, effective temperature and surface gravity that are predicted by simulations of stellar surface convection.
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Affiliation(s)
- C Paladini
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium.,European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
| | - F Baron
- Department of Physics and Astronomy, Georgia State University, PO Box 5060 Atlanta, Georgia 30302-5060, USA
| | - A Jorissen
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium
| | - J-B Le Bouquin
- Université Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - B Freytag
- Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
| | - S Van Eck
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium
| | - M Wittkowski
- European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
| | - J Hron
- Department of Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria
| | - A Chiavassa
- Laboratoire Lagrange, UMR 7293, Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte d'Azur, BP 4229, 06304 Nice Cedex 4, France
| | - J-P Berger
- Université Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
| | - C Siopis
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium
| | - A Mayer
- Department of Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria
| | - G Sadowski
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium
| | - K Kravchenko
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium
| | - S Shetye
- Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles, CP 226, 1050 Bruxelles, Belgium
| | - F Kerschbaum
- Department of Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria
| | - J Kluska
- University of Exeter, Department of Physics and Astronomy, Stocker Road, Exeter EX4 4QL, UK
| | - S Ramstedt
- Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
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5
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Lier MCI, Malik RF, van Waesberghe JHTM, Maas JW, van Rumpt-van de Geest DA, Coppus SF, Berger JP, van Rijn BB, Janssen PF, de Boer MA, de Vries JIP, Jansen FW, Brosens IA, Lambalk CB, Mijatovic V. Spontaneous haemoperitoneum in pregnancy and endometriosis: a case series. BJOG 2016; 124:306-312. [DOI: 10.1111/1471-0528.14371] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2016] [Indexed: 11/29/2022]
Affiliation(s)
- MCI Lier
- Department of Reproductive Medicine; VU University Medical Centre; Endometriosis Centre VUmc; Amsterdam the Netherlands
| | - RF Malik
- Department of Reproductive Medicine; VU University Medical Centre; Endometriosis Centre VUmc; Amsterdam the Netherlands
| | - JHTM van Waesberghe
- Department of Radiology; VU University Medical Centre; Endometriosis Centre VUmc; Amsterdam the Netherlands
| | - JW Maas
- Department of Obstetrics & Gynaecology; Maxima Medical Centre; Veldhoven the Netherlands
| | | | - SF Coppus
- Department of Obstetrics & Gynaecology; Radboud University Medical Centre; Nijmegen the Netherlands
| | - JP Berger
- Department of Obstetrics & Gynaecology; Bronovo Hospital; Den Haag the Netherlands
| | - BB van Rijn
- Department of Obstetrics; Wilhelmina Children's Hospital Birth Centre; University Medical Centre Utrecht; Utrecht the Netherlands
- Academic Unit Human Development and Health; Institute for Life Sciences; University of Southampton; Southampton UK
| | - PF Janssen
- Department of Obstetrics & Gynaecology; St. Elisabeth Hospital; Tilburg the Netherlands
| | - MA de Boer
- Department of Obstetrics & Gynaecology; VU University Medical Centre; Amsterdam the Netherlands
| | - JIP de Vries
- Department of Obstetrics & Gynaecology; VU University Medical Centre; Amsterdam the Netherlands
| | - FW Jansen
- Department of Obstetrics & Gynaecology; Leiden University Medical Centre; Leiden the Netherlands
| | - IA Brosens
- Leuven Institute for Fertility and Embryology; Leuven Belgium
| | - CB Lambalk
- Department of Reproductive Medicine; VU University Medical Centre; Endometriosis Centre VUmc; Amsterdam the Netherlands
| | - V Mijatovic
- Department of Reproductive Medicine; VU University Medical Centre; Endometriosis Centre VUmc; Amsterdam the Netherlands
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6
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Bonnichon P, Berger JP, Bonni N, Fontaine M, Pion-Graff J. [History of cancer and chemotherapy before chemotherapy]. Hist Sci Med 2014; 48:469-474. [PMID: 25962214] [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: 06/04/2023]
Abstract
Chemotherapy stands today for cancer. In 1909, Paul Ehrlich (1854-1915) advocates the use of arsphenamine by infusion. So, he is considered as the father of chemotherapy. In fact, the first to have thought through chemotherapy was Sir Christopher Wren (1632-1723). In 1676, ideas and experiments on animals had sufficiently progressed to allow Michel Ettmuller (1644-1683) to publish the first edition of his book and several others were printed until 1753. In this book, he describes the first intravenous treatment, it sets the first indications, dosages and different products which can be used. However this method has been forgotten until the late 19th century.
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7
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Carr RD, Katzeff HL, Alexander CM, Berger JP, Xu SS, Thornberry N. Reply to: Ahren B et al. Mechanisms of action of the dipeptidyl peptidase-4 inhibitor vildagliptin in humans. Diabetes Obes Metab 2011; 13(9): 775-783 and Ahren B et al. Clinical evidence and mechanistic basis for vildagliptin's action when added to metformin. Diabetes Obes Metab 2011; 13(3): 193-203. Diabetes Obes Metab 2012; 14:383-4. [PMID: 22390829 DOI: 10.1111/j.1463-1326.2011.01542.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Yang R, Castriota G, Chen Y, Cleary MA, Ellsworth K, Shin MK, Tran JL, Vogt TF, Wu M, Xu S, Yang X, Zhang BB, Berger JP, Qureshi SA. RNAi-mediated germline knockdown of FABP4 increases body weight but does not improve the deranged nutrient metabolism of diet-induced obese mice. Int J Obes (Lond) 2010; 35:217-25. [PMID: 20603627 PMCID: PMC3056343 DOI: 10.1038/ijo.2010.128] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: To investigate the impact of reduced adipocyte fatty acid-binding protein 4 (FABP4) in control of body weight, glucose and lipid homeostasis in diet-induced obese (DIO) mice. Methods: We applied RNA interference (RNAi) technology to generate FABP4 germline knockdown mice to investigate their metabolic phenotype. Results: RNAi-mediated knockdown reduced FABP4 mRNA expression and protein levels by almost 90% in adipocytes of standard chow-fed mice. In adipocytes of DIO mice, RNAi reduced FABP4 expression and protein levels by 70 and 80%, respectively. There was no increase in adipocyte FABP5 expression in FABP4 knockdown mice. The knockdown of FABP4 significantly increased body weight and fat mass in DIO mice. However, FABP4 knockdown did not affect plasma glucose and lipid homeostasis in DIO mice; nor did it improve their insulin sensitivity. Conclusion: Our data indicate that robust knockdown of FABP4 increases body weight and fat mass without improving glucose and lipid homeostasis in DIO mice.
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Affiliation(s)
- R Yang
- Department of Metabolic Disorders-Diabetes, Merck Research Laboratories, Rahway, NJ 07065, USA.
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9
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Monnier JD, Zhao M, Pedretti E, Thureau N, Ireland M, Muirhead P, Berger JP, Millan-Gabet R, Van Belle G, Ten Brummelaar T, McAlister H, Ridgway S, Turner N, Sturmann L, Sturmann J, Berger D. Imaging the Surface of Altair. Science 2007; 317:342-5. [PMID: 17540860 DOI: 10.1126/science.1143205] [Citation(s) in RCA: 239] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Spatially resolving the surfaces of nearby stars promises to advance our knowledge of stellar physics. Using optical long-baseline interferometry, we constructed a near-infrared image of the rapidly rotating hot star Altair with a resolution of <1 milliarcsecond. The image clearly reveals the strong effect of gravity darkening on the highly distorted stellar photosphere. Standard models for a uniformly rotating star cannot explain our findings, which appear to result from differential rotation, alternative gravity-darkening laws, or both.
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Affiliation(s)
- John D Monnier
- Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA.
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10
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Zhu J, Lum PY, Lamb J, GuhaThakurta D, Edwards SW, Thieringer R, Berger JP, Wu MS, Thompson J, Sachs AB, Schadt EE. An integrative genomics approach to the reconstruction of gene networks in segregating populations. Cytogenet Genome Res 2005; 105:363-74. [PMID: 15237224 DOI: 10.1159/000078209] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2003] [Accepted: 12/09/2003] [Indexed: 11/19/2022] Open
Abstract
The reconstruction of genetic networks in mammalian systems is one of the primary goals in biological research, especially as such reconstructions relate to elucidating not only common, polygenic human diseases, but living systems more generally. Here we propose a novel gene network reconstruction algorithm, derived from classic Bayesian network methods, that utilizes naturally occurring genetic variations as a source of perturbations to elucidate the network. This algorithm incorporates relative transcript abundance and genotypic data from segregating populations by employing a generalized scoring function of maximum likelihood commonly used in Bayesian network reconstruction problems. The utility of this novel algorithm is demonstrated via application to liver gene expression data from a segregating mouse population. We demonstrate that the network derived from these data using our novel network reconstruction algorithm is able to capture causal associations between genes that result in increased predictive power, compared to more classically reconstructed networks derived from the same data.
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Affiliation(s)
- J Zhu
- Rosetta Inpharmatics, Seattle, WA, USA
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11
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Berger JP. Role of PPARgamma, transcriptional cofactors, and adiponectin in the regulation of nutrient metabolism, adipogenesis and insulin action: view from the chair. Int J Obes (Lond) 2005; 29 Suppl 1:S3-4. [PMID: 15711580 DOI: 10.1038/sj.ijo.0802904] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- J P Berger
- Department of Metabolic Disorders, Merck Research Laboratories, Rahway, NJ 07065, USA.
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12
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Abstract
Peroxisome proliferator-activated receptors (PPARs) are nuclear receptor isoforms with key roles in the regulation of lipid and glucose metabolism. Synthetic ligands for PPAR gamma (and PPAR alpha) have effects of promoting insulin sensitization in the context of obesity. Recent evidence suggests that activation of PPAR delta might produce similar effects. Both PPAR gamma and PPAR alpha have also been shown to produce selected anti-inflammatory effects and to reduce the progression of atherosclerosis in animals (alpha and gamma) or in humans (alpha). Mechanisms underlying insulin-sensitizing effects are complex. For PPAR gamma, direct effects on adipose tissue lipid metabolism with secondary benefits in liver and/or muscle (lipid levels and insulin signaling) have been implicated. For PPAR alpha, accelerated lipid catabolism may contribute to reduced muscle or liver 'steatosis'. Anti-inflammatory mechanisms as contributors to the beneficial metabolic effects of PPAR activation are also worth considering for the following reasons: (1) obesity and insulin resistance are associated with a proinflammatory milieu. (2) PPAR gamma has clear effects to oppose the effects of tumor necrosis factor-alpha (TNFalpha) in adipocytes. (3) effects of PPAR ligands on cytokine-mediated signaling (eg via NF-kappa B) may be expected to enhance insulin action. (4) Adipose production of several molecules that are implicated as markers or mediators of inflammation is reduced. (5) In humans, treatment with either PPAR alpha or PPAR gamma agonists has been shown to reduce circulating levels of proteins that serve as markers of inflammation. (6) Adiponectin, a fat-derived circulating factor that has been implicated as having anti-inflammatory activity, is induced by PPAR gamma agonism.
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Affiliation(s)
- D E Moller
- Metabolic Disorders, Merck Research Laboratories, Rahway, NJ 07065, USA.
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13
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Saouti R, Albassir A, Berger JP, Fatemi F, Willems S. Anterior elbow dislocation with recurrent instability. Acta Orthop Belg 2003; 69:197-200. [PMID: 12769023] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Anterior elbow dislocations are often associated with severe soft tissue lesions. The mechanism of dislocation is usually an anteriorly directed blow on the proximal ulna after a fall on a flexed elbow. Simple anterior elbow dislocations are traditionally treated by closed reduction followed by a short period of immobilisation. Fracture-dislocations are usually unstable after reduction and necessitate surgical management. The authors report a case of acute anterior dislocation with a concomitant radial head fracture that was complicated by recurrent instability. The literature is reviewed to discuss a treatment strategy.
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Affiliation(s)
- R Saouti
- Orthopaedic Department, University Hospital (C.H.U. du Sart-Tilman), 4000 Liège, Belgium
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14
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Aubert B, Boutigny D, Gaillard JM, Hicheur A, Karyotakis Y, Lees JP, Robbe P, Tisserand V, Palano A, Chen GP, Chen JC, Qi ND, Rong G, Wang P, Zhu YS, Eigen G, Reinertsen PL, Stugu B, Abbott B, Abrams GS, Borgland AW, Breon AB, Brown DN, Button-Shafer J, Cahn RN, Clark AR, Gill MS, Gritsan AV, Groysman Y, Jacobsen RG, Kadel RW, Kadyk J, Kerth LT, Kluth S, Kolomensky YG, Kral JF, LeClerc C, Levi ME, Liu T, Lynch G, Meyer AB, Momayezi M, Oddone PJ, Perazzo A, Pripstein M, Roe NA, Romosan A, Ronan MT, Shelkov VG, Telnov AV, Wenzel WA, Zisman MS, Bright-Thomas PG, Harrison TJ, Hawkes CM, Knowles DJ, O'Neale SW, Penny RC, Watson AT, Watson NK, Deppermann T, Goetzen K, Koch H, Krug J, Kunze M, Lewandowski B, Peters K, Schmuecker H, Steinke M, Andress JC, Barlow NR, Bhimji W, Chevalier N, Clark PJ, Cottingham WN, De Groot N, Dyce N, Foster B, McFall JD, Wallom D, Wilson FF, Abe K, Hearty C, Mattison TS, McKenna JA, Thiessen D, Jolly S, McKemey AK, Tinslay J, Blinov VE, Bukin AD, Bukin DA, Buzykaev AR, Golubev VB, Ivanchenko VN, Korol AA, Kravchenko EA, Onuchin AP, Salnikov AA, Serednyakov SI, Skovpen YI, Telnov VI, Yushkov AN, Best D, Lankford AJ, Mandelkern M, McMahon S, Stoker DP, Ahsan A, Arisaka K, Buchanan C, Chun S, Branson JG, MacFarlane DB, Prell S, Rahatlou S, Raven G, Sharma V, Campagnari C, Dahmes B, Hart PA, Kuznetsova N, Levy SL, Long O, Lu A, Richman JD, Verkerke W, Witherell M, Yellin S, Beringer J, Dorfan DE, Eisner AM, Frey A, Grillo AA, Grothe M, Heusch CA, Johnson RP, Kroeger W, Lockman WS, Pulliam T, Sadrozinski H, Schalk T, Schmitz RE, Schumm BA, Seiden A, Turri M, Walkowiak W, Williams DC, Wilson MG, Chen E, Dubois-Felsmann GP, Dvoretskii A, Hitlin DG, Metzler S, Oyang J, Porter FC, Ryd A, Samuel A, Weaver M, Yang S, Zhu RY, Devmal S, Geld TL, Jayatilleke S, Mancinelli G, Meadows BT, Sokoloff MD, Barillari T, Bloom P, Dima MO, Fahey S, Ford WT, Johnson DR, Nauenberg U, Olivas A, Park H, Rankin P, Roy J, Sen S, Smith JG, van Hoek WC, Wagner DL, Blouw J, Harton JL, Krishnamurthy M, Soffer A, Toki WH, Wilson RJ, Zhang J, Brandt T, Brose J, Colberg T, Dahlinger G, Dickopp M, Dubitzky RS, Hauke A, Maly E, Müller-Pfefferkorn R, Otto S, Schubert KR, Schwierz R, Spaan B, Wilden L, Behr L, Bernard D, Bonneaud GR, Brochard F, Cohen-Tanugi J, Ferrag S, Roussot E, T'Jampens S, Thiebaux C, Vasileiadis G, Verderi M, Anjomshoaa A, Bernet R, Khan A, Lavin D, Muheim F, Playfer S, Swain JE, Falbo M, Borean C, Bozzi C, Dittongo S, Folegani M, Piemontese L, Treadwell E, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Falciai D, Finocchiaro G, Patteri P, Peruzzi IM, Piccolo M, Xie Y, Zallo A, Bagnasco S, Buzzo A, Contri R, Crosetti G, Fabbricatore P, Farinon S, Lo Vetere M, Macri M, Monge MR, Musenich R, Pallavicini M, Parodi R, Passaggio S, Pastore FC, Patrignani C, Pia MG, Priano C, Robutti E, Santroni A, Morii M, Bartoldus R, Dignan T, Hamilton R, Mallik U, Cochran J, Crawley HB, Fischer PA, Lamsa J, Meyer WT, Rosenberg EI, Benkebil M, Grosdidier G, Hast C, Höcker A, Lacker HM, Laplace S, Lepeltier V, Lutz AM, Plaszczynski S, Schune MH, Trincaz-Duvoid S, Valassi A, Wormser G, Bionta RM, Brigljević VV, Lange DJ, Mugge M, Shi X, van Bibber K, Wenaus TJ, Wright DM, Wuest CR, Carroll M, Fry JR, Gabathuler E, Gamet R, George M, Kay M, Payne DJ, Sloane RJ, Touramanis C, Aspinwall ML, Bowerman DA, Dauncey PD, Egede U, Eschrich I, Gunawardane NJW, Nash JA, Sanders P, Smith D, Azzopardi DE, Back JJ, Dixon P, Harrison PF, Potter RJL, Shorthouse HW, Strother P, Vidal PB, Williams MI, Cowan G, George S, Green MG, Kurup A, Marker CE, McGrath P, McMahon TR, Ricciardi S, Salvatore F, Scott I, Vaitsas G, Brown D, Davis CL, Allison J, Barlow RJ, Boyd JT, Forti AC, Fullwood J, Jackson F, Lafferty GD, Savvas N, Simopoulos ET, Weatherall JH, Farbin A, Jawahery A, Lillard V, Olsen J, Roberts DA, Schieck JR, Blaylock G, Dallapiccola C, Flood KT, Hertzbach SS, Kofler R, Moore TB, Staengle H, Willocq S, Brau B, Cowan R, Sciolla G, Taylor F, Yamamoto RK, Milek M, Patel PM, Trischuk J, Lanni F, Palombo F, Bauer JM, Booke M, Cremaldi L, Eschenburg V, Kroeger R, Reidy J, Sanders DA, Summers DJ, Martin JP, Nief JY, Seitz R, Taras P, Zacek V, Nicholson H, Sutton CS, Cartaro C, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Paolucci P, Piccolo D, Sciacca C, LoSecco JM, Alsmiller JRG, Gabriel TA, Handler T, Brau J, Frey R, Iwasaki M, Sinev NB, Strom D, Colecchia F, Dal Corso F, Dorigo A, Galeazzi F, Margoni M, Michelon G, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Torassa E, Voci C, Benayoun M, Briand H, Chauveau J, David P, de La Vaissière C, Del Buono L, Hamon O, Le Diberder F, Leruste P, Lory J, Roos L, Stark J, Versillé S, Manfredi PF, Re V, Speziali V, Frank ED, Gladney L, Guo QH, Panetta JH, Angelini C, Batignani G, Bettarini S, Bondioli M, Carpinelli M, Forti F, Giorgi MA, Lusiani A, Martinez-Vidal F, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Sandrelli F, Simi G, Triggiani G, Walsh J, Haire M, Judd D, Paick K, Turnbull L, Wagoner DE, Albert J, Bula C, Elmer P, Lu C, McDonald KT, Miftakov V, Schaffner SF, Smith AJS, Tumanov A, Varnes EW, Cavoto G, del Re D, Faccini R, Ferrarotto F, Ferroni F, Fratini K, Lamanna E, Leonardi E, Mazzoni MA, Morganti S, Piredda G, Safai Tehrani F, Serra M, Voena C, Christ S, Waldi R, Adye T, Franek B, Geddes NI, Gopal GP, Xella SM, Aleksan R, De Domenico G, Emery S, Gaidot A, Ganzhur SF, Giraud PF, Hamel Monchenault G, Kozanecki W, Langer M, London GW, Mayer B, Serfass B, Vasseur G, Yèche C, Zito M, Copty N, Purohit MV, Singh H, Yumiceva FX, Adam I, Anthony PL, Aston D, Baird K, Berger JP, Bloom E, Boyarski AM, Bulos F, Calderini G, Claus R, Convery MR, Coupal DP, Coward DH, Dorfan J, Doser M, Dunwoodie W, Field RC, Glanzman T, Godfrey GL, Gowdy SJ, Grosso P, Himel T, Hryn'ova T, Huffer ME, Innes WR, Jessop CP, Kelsey MH, Kim P, Kocian ML, Langenegger U, Leith DWGS, Luitz S, Luth V, Lynch HL, Marsiske H, Menke S, Messner R, Moffeit KC, Mount R, Muller DR, O'Grady CP, Perl M, Petrak S, Quinn H, Ratcliff BN, Robertson SH, Rochester LS, Roodman A, Schietinger T, Schindler RH, Schwiening J, Seeman JT, Serbo VV, Snyder A, Soha A, Spanier SM, Stelzer J, Su D, Sullivan MK, Tanaka HA, Va'vra J, Wagner SR, Weinstein AJR, Wienands U, Wisniewski WJ, Wright DH, Young CC, Burchat PR, Cheng CH, Kirkby D, Meyer TI, Roat C, De Silva A, Henderson R, Bugg W, Cohn H, Weidemann AW, Izen JM, Kitayama I, Lou XC, Turcotte M, Bianchi F, Bona M, Di Girolamo B, Gamba D, Smol A, Zanin D, Bosisio L, Della Ricca G, Lanceri L, Pompili A, Poropat P, Vuagnin G, Panvini RS, Brown CM, Kowalewski R, Roney JM, Band HR, Charles E, Dasu S, Di Lodovico F, Eichenbaum AM, Hu H, Johnson JR, Liu R, Nielsen J, Pan Y, Prepost R, Scott IJ, Sekula SJ, von Wimmersperg-Toeller JH, Wu SL, Yu Z, Zobernig H, Kordich TMB, Neal H. Measurement of B --> K*gamma branching fractions and charge asymmetries. Phys Rev Lett 2002; 88:101805. [PMID: 11909345 DOI: 10.1103/physrevlett.88.101805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2001] [Indexed: 05/23/2023]
Abstract
The branching fractions of the exclusive decays B0-->K(*0)gamma and B+-->K(*+)gamma are measured from a sample of (22.74+/-0.36)x10(6) BB decays collected with the BABAR detector at the PEP-II asymmetric e(+)e(-) collider. We find B (B0-->K(*0)gamma) = [4.23+/-0.40(stat)+/-0.22(syst)]x10(-5), B(B+-->K(*+)gamma) = [3.83+/-0.62(stat)+/-0.22(syst)]x10(-5) and constrain the CP-violating charge asymmetry to be -0.170<A(CP)(B-->K(*)gamma)<0.082 at 90% C.L.
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Affiliation(s)
- B Aubert
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France
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Berger JP, Pécoud A, Kiefer B, Balavoine JF. [Médecine & Hygiène--Revue Médicale de la Suisse Romande: the same battle!]. Rev Med Suisse Romande 2002; 122:63. [PMID: 11977464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Abstract
Chronic elevation of systemic levels of acute phase reactants and inflammatory cytokines found in patients with diabetes and the often-associated metabolic syndrome X (hypertriglyceridemia, low serum high density lipoprotein cholesterol, hypertension, and accelerated atherosclerosis) may be responsible for the increased incidence of cardiovascular problems in this population. Here we examine the contribution of adipose tissue to the systemic elevation of acute phase reactants associated with chronic hyperglycemia. We demonstrate that adipose tissue expresses a number of acute phase reactants at high levels, including serum amyloid A3 (SAA3), alphal-acid glycoprotein, the lipocalin 24p3 as well as plasminogen activator inhibitor-1 (PAI-1). Additionally, we show SAA3 is expressed at low levels under normal conditions but in the diabetic state is dramatically up-regulated in adipose tissue while down-regulated in liver. Furthermore, pro-inflammatory stimuli and high glucose can lead to the induction of SAA3 in adipose tissue in vivo as well as in the 3T3-L1 adipocyte cell line. Adipose tissue may therefore play a major role in the pathogenic sequelae of Type II diabetes, in particular the cardiovascular problems associated with prolonged hyperglycemia.
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Affiliation(s)
- Y Lin
- Department of Cell Biology, Department of Medicine, and Diabetes Research and Training Center, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Berger JP. [Multisite hospitals: a future solution?]. Rev Med Suisse Romande 2001; 121:707-8. [PMID: 11715284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
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Aubert B, Boutigny D, Gaillard JM, Hicheur A, Karyotakis Y, Lees JP, Robbe P, Tisserand V, Palano A, Chen GP, Chen JC, Qi ND, Rong G, Wang P, Zhu YS, Eigen G, Reinertsen PL, Stugu B, Abbott B, Abrams GS, Borgland AW, Breon AB, Brown DN, Button-Shafer J, Cahn RN, Clark AR, Gill MS, Gritsan AV, Groysman Y, Jacobsen RG, Kadel RW, Kadyk J, Kerth LT, Kluth S, Kolomensky YG, Kral JF, LeClerc C, Levi ME, Liu T, Lynch G, Meyer AB, Momayezi M, Oddone PJ, Perazzo A, Pripstein M, Roe NA, Romosan A, Ronan MT, Shelkov VG, Telnov AV, Wenzel WA, Zisman MS, Bright-Thomas PG, Harrison TJ, Hawkes CM, Knowles DJ, O'Neale SW, Penny RC, Watson AT, Watson NK, Deppermann T, Goetzen K, Koch H, Krug J, Kunze M, Lewandowski B, Peters K, Schmuecker H, Steinke M, Andress JC, Barlow NR, Bhimji W, Chevalier N, Clark PJ, Cottingham WN, De Groot N, Dyce N, Foster B, McFall JD, Wallom D, Wilson FF, Abe K, Hearty C, Mattison TS, McKenna JA, Thiessen D, Jolly S, McKemey AK, Tinslay J, Blinov VE, Bukin AD, Bukin DA, Buzykaev AR, Golubev VB, Ivanchenko VN, Korol AA, Kravchenko EA, Onuchin AP, Salnikov AA, Serednyakov SI, Skovpen YI, Telnov VI, Yushkov AN, Best D, Lankford AJ, Mandelkern M, McMahon S, Stoker DP, Ahsan A, Arisaka K, Buchanan C, Chun S, Branson JG, MacFarlane DB, Prell S, Rahatlou S, Raven G, Sharma V, Campagnari C, Dahmes B, Hart PA, Kuznetsova N, Levy SL, Long O, Lu A, Richman JD, Verkerke W, Witherell M, Yellin S, Beringer J, Dorfan DE, Eisner AM, Frey A, Grillo AA, Grothe M, Heusch CA, Johnson RP, Kroeger W, Lockman WS, Pulliam T, Sadrozinski H, Schalk T, Schmitz RE, Schumm BA, Seiden A, Turri M, Walkowiak W, Williams DC, Wilson MG, Chen E, Dubois-Felsmann GP, Dvoretskii A, Hitlin DG, Metzler S, Oyang J, Porter FC, Ryd A, Samuel A, Weaver M, Yang S, Zhu RY, Devmal S, Geld TL, Jayatilleke S, Mancinelli G, Meadows BT, Sokoloff MD, Barillari T, Bloom P, Dima MO, Fahey S, Ford WT, Johnson DR, Nauenberg U, Olivas A, Park H, Rankin P, Roy J, Sen S, Smith JG, van Hoek WC, Wagner DL, Blouw J, Harton JL, Krishnamurthy M, Soffer A, Toki WH, Wilson RJ, Zhang J, Brandt T, Brose J, Colberg T, Dahlinger G, Dickopp M, Dubitzky RS, Hauke A, Maly E, Müller-Pfefferkorn R, Otto S, Schubert KR, Schwierz R, Spaan B, Wilden L, Behr L, Bernard D, Bonneaud GR, Brochard F, Cohen-Tanugi J, Ferrag S, Roussot E, T'Jampens S, Thiebaux C, Vasileiadis G, Verderi M, Anjomshoaa A, Bernet R, Khan A, Lavin D, Muheim F, Playfer S, Swain JE, Falbo M, Borean C, Bozzi C, Dittongo S, Folegani M, Piemontese L, Treadwell E, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Falciai D, Finocchiaro G, Patteri P, Peruzzi IM, Piccolo M, Xie Y, Zallo A, Bagnasco S, Buzzo A, Contri R, Crosetti G, Fabbricatore P, Farinon S, Lo Vetere M, Macri M, Monge MR, Musenich R, Pallavicini M, Parodi R, Passaggio S, Pastore FC, Patrignani C, Pia MG, Priano C, Robutti E, Santroni A, Morii M, Bartoldus R, Dignan T, Hamilton R, Mallik U, Cochran J, Crawley HB, Fischer PA, Lamsa J, Meyer WT, Rosenberg EI, Benkebil M, Grosdidier G, Hast C, Höcker A, Lacker HM, Laplace S, Lepeltier V, Lutz AM, Plaszczynski S, Schune MH, Trincaz-Duvoid S, Valassi A, Wormser G, Bionta RM, Brigljević V, Lange DJ, Mugge M, Shi X, van Bibber K, Wenaus TJ, Wright DM, Wuest CR, Carroll M, Fry JR, Gabathuler E, Gamet R, George M, Kay M, Payne DJ, Sloane RJ, Touramanis C, Aspinwall ML, Bowerman DA, Dauncey PD, Egede U, Eschrich I, Gunawardane NJ, Nash JA, Sanders P, Smith D, Azzopardi DE, Back JJ, Dixon P, Harrison PF, Potter RJ, Shorthouse HW, Strother P, Vidal PB, Williams MI, Cowan G, George S, Green MG, Kurup A, Marker CE, McGrath P, McMahon TR, Ricciardi S, Salvatore F, Scott I, Vaitsas G, Brown D, Davis CL, Allison J, Barlow RJ, Boyd JT, Forti AC, Fullwood J, Jackson F, Lafferty GD, Savvas N, Simopoulos ET, Weatherall JH, Farbin A, Jawahery A, Lillard V, Olsen J, Roberts DA, Schieck JR, Blaylock G, Dallapiccola C, Flood KT, Hertzbach SS, Kofler R, Moore TB, Staengle H, Willocq S, Brau B, Cowan R, Sciolla G, Taylor F, Yamamoto RK, Milek M, Patel PM, Trischuk J, Lanni F, Palombo F, Bauer JM, Booke M, Cremaldi L, Eschenburg V, Kroeger R, Reidy J, Sanders DA, Summers DJ, Martin JP, Nief JY, Seitz R, Taras P, Zacek V, Nicholson H, Sutton CS, Cartaro C, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Paolucci P, Piccolo D, Sciacca C, LoSecco JM, Alsmiller JR, Gabriel TA, Handler T, Brau J, Frey R, Iwasaki M, Sinev NB, Strom D, Colecchia F, Dal Corso F, Dorigo A, Galeazzi F, Margoni M, Michelon G, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Torassa E, Voci C, Benayoun M, Briand H, Chauveau J, David P, de La Vaissière C, Del Buono L, Hamon O, Le Diberder F, Leruste P, Lory J, Roos L, Stark J, Versillé S, Manfredi PF, Re V, Speziali V, Frank ED, Gladney L, Guo QH, Panetta JH, Angelini C, Batignani G, Bettarini S, Bondioli M, Carpinelli M, Forti F, Giorgi MA, Lusiani A, Martinez-Vidal F, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Sandrelli F, Simi G, Triggiani G, Walsh J, Haire M, Judd D, Paick K, Turnbull L, Wagoner DE, Albert J, Bula C, Elmer P, Lu C, McDonald KT, Miftakov V, Schaffner SF, Smith AJ, Tumanov A, Varnes EW, Cavoto G, del Re D, Faccini R, Ferrarotto F, Ferroni F, Fratini K, Lamanna E, Leonardi E, Mazzoni MA, Morganti S, Piredda G, Safai Tehrani F, Serra M, Voena C, Christ S, Waldi R, Adye T, Franek B, Geddes NI, Gopal GP, Xella SM, Aleksan R, De Domenico G, Emery S, Gaidot A, Ganzhur SF, Giraud PF, Hamel De Monchenault G, Kozanecki W, Langer M, London GW, Mayer B, Serfass B, Vasseur G, Yèche C, Zito M, Copty N, Purohit MV, Singh H, Yumiceva FX, Adam I, Anthony PL, Aston D, Baird K, Berger JP, Bloom E, Boyarski AM, Bulos F, Calderini G, Claus R, Convery MR, Coupal DP, Coward DH, Dorfan J, Dorser M, Dunwoodie W, Field RC, Glanzman T, Godfrey GL, Gowdy SJ, Grosso P, Himel T, Hryn'ova T, Huffer ME, Innes WR, Jessop CP, Kelsey MH, Kim P, Kocian ML, Langennegger U, Leith DW, Luitz S, Luth V, Lynch HL, Marsiske H, Menke S, Messner R, Moffeit KC, Mount R, Muller DR, O'Grady CP, Perl M, Petrak S, Quinn H, Ratcliff BN, Robertson SH, Rochester LS, Roodman A, Schietinger T, Schindler RH, Schwiening J, Seeman JT, Serbo VV, Snyder SR, Soha A, Spanier SM, Stelzer J, Su D, Sullivan MK, Tanaka HA, Va'vra J, Wagner SR, Weinstein AJ, Wienands U, Wisniewski WJ, Wright DH, Young CC, Burchat PR, Cheng CH, Kirkby D, Meyer TI, Roat C, Henderson R, Bugg W, Cohn H, Weidemann AW, Izen JM, Kitayama I, Lou XC, Turcotte M, Bianchi F, Bona M, DiGirolamo B, Gamba D, Smol A, Zanin D, Bosisio L, Della Ricci G, Lanceri L, Pompili A, Poropat P, Vuagnin G, Panvini RS, Brown CM, De Silva A, Kowalewski R, Roney JM, Band HR, Charles E, Dasu S, Di Lodovico F, Eichenbaum AM, Hu H, Johnson JR, Liu R, Nielsen J, Pan Y, Prepost R, Scott IJ, Sekula SJ, von Wimmersperg-Toeller JH, Wu SL, Zobernig H, Kordich TM, Neal H. Observation of CP violation in the B(0) meson system. Phys Rev Lett 2001; 87:091801. [PMID: 11531560 DOI: 10.1103/physrevlett.87.091801] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2001] [Indexed: 05/23/2023]
Abstract
We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of Upsilon(4S) decays collected in 2001, bringing the data available to 32 x 10(6) BB macro pairs. We select events in which one neutral B meson is fully reconstructed in a final state containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2 beta, is derived from the decay time distributions in such events. The result sin2 beta = 0.59+/-0.14(stat)+/-0.05(syst) establishes CP violation in the B(0) meson system. We also determine absolute value of lambda = 0.93+/-0.09(stat)+/-0.03(syst), consistent with no direct CP violation.
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Affiliation(s)
- B Aubert
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France
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Lawrence JW, Li Y, Chen S, DeLuca JG, Berger JP, Umbenhauer DR, Moller DE, Zhou G. Differential gene regulation in human versus rodent hepatocytes by peroxisome proliferator-activated receptor (PPAR) alpha. PPAR alpha fails to induce peroxisome proliferation-associated genes in human cells independently of the level of receptor expresson. J Biol Chem 2001; 276:31521-7. [PMID: 11418601 DOI: 10.1074/jbc.m103306200] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We compared the ability of rat and human hepatocytes to respond to fenofibric acid and a novel potent phenylacetic acid peroxisome proliferator-activated receptor (PPAR) alpha agonist (compound 1). Fatty acyl-CoA oxidase (FACO) activity and mRNA were increased after treatment with either fenofibric acid or compound 1 in rat hepatocytes. In addition, apolipoprotein CIII mRNA was decreased by both fenofibric acid and compound 1 in rat hepatocytes. Both agonists decreased apolipoprotein CIII mRNA in human hepatocytes; however, very little change in FACO activity or mRNA was observed. Furthermore, other peroxisome proliferation (PP)-associated genes including peroxisomal 3-oxoacyl-CoA thiolase (THIO), peroxisomal enoyl-CoA hydratase/3-hydroxyacyl-CoA dehydrogenase (HD), peroxisomal membrane protein-70 (PMP-70) were not regulated by PPAR alpha agonists in human hepatocytes. Moreover, other genes that are regulated by PPAR alpha ligands in human hepatocytes such as mitochondrial HMG-CoA synthase and carnitine palmitoyl transferase-1 (CPT-1) were also regulated in HepG2 cells by PPAR alpha agonists. Several stably transfected HepG2 cell lines were established that overexpressed human PPAR alpha to levels between 6- and 26-fold over normal human hepatocytes. These PPAR alpha-overexpressing cells had higher basal mRNA levels of mitochondrial HMG-CoA synthase and CPT-1; however, basal FACO mRNA levels and other PP-associated genes including THIO, HD, or PMP-70 mRNA were not substantially affected. In addition, FACO, THIO, HD, and PMP-70 mRNA levels did not increase in response to PPAR alpha agonist treatment in the PPAR alpha-overexpressing cells, although mitochondrial HMG-CoA synthase and CPT-1 mRNAs were both induced. These results suggest that other factors besides PPAR alpha levels determine the species-specific response of human and rat hepatocytes to the induction of PP.
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Affiliation(s)
- J W Lawrence
- Department of Safety Assessment, Merck Research Laboratories, Merck and Co., Inc., West Point, Pennsylvania 19486, USA.
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20
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Berger JP. [Did you say APLIM? Presenting the Association for Medical Information]. Rev Med Suisse Romande 2001; 121:327-8. [PMID: 11400407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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21
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Haguenauer P, Berger JP, Rousselet-Perraut K, Kern P, Malbet F, Schanen-Duport I, Benech P. Integrated Optics for Astronomical Interferometry. III. Optical Validation of a Planar Optics Two-Telescope Beam Combiner. Appl Opt 2000; 39:2130-2139. [PMID: 18345117 DOI: 10.1364/ao.39.002130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The optical characterization of a fiber-connected planar optics beam combiner dedicated to astronomical interferometry for two telescopes is presented. The beam combiner, fully integrated on a single 5 mm x 40 mm glass chip, is tested as the central part of an astronomical instrument. The single-mode waveguides are made by silver-ion-exchange technology upon glass substrates and provide spatial filtering, which improves the visibility measurement accuracy by selecting only the fundamental mode of the beams at the telescope focal plane. A global optical throughput of 43% is measured, and the sources of losses are identified and examined in detail. Solutions for improving this throughput are proposed. High and stable contrasts are obtained with a 1.55-mum laser diode (?96%) and with a white-light source (~92%) in the astronomical H filter (1.43 mum; 1.77 mum). The need for accurate control of differential instrumental polarization is demonstrated. In this context the intrinsic polarization-maintaining property of the planar optics component is characterized. This validation of the important potential uses of integrated planar optics should be valuable for future design of optical telescope arrays.
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22
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Steinmetz JP, Berger JP. Ultrasonography as an aid to diagnosis and treatment in a rural African hospital: a prospective study of 1,119 cases. Am J Trop Med Hyg 1999; 60:119-23. [PMID: 9988334 DOI: 10.4269/ajtmh.1999.60.119] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The aim of this study was to assess the utility of ultrasonography in a rural African hospital in Cameroon with scarce resources. A prospective questionnaire was administered and completed for each of the 1,119 consecutive cases included in the study. Among these 1,119 cases, the diagnosis made by clinicians and by echography could be verified by another means for 323 patients. Ultrasonography showed abnormal findings in 78% of the cases. In the group of 323 patients in which the diagnosis made by echography could be verified, it was correct in 95.4% of the cases, erroneous in 4.6% of the cases, judged useful for diagnosis in 67.8% of the cases, and not contributive in 27.6% of the cases. Ultrasonography was judged useful when treatment was decided upon in 62% of the cases. This study demonstrated the value of ultrasonography in the context of a developing country and the conditions by which its use could be delineated.
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Affiliation(s)
- J P Steinmetz
- Département de Chirurgie, Centre Hospitalier, Clamecy, France
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23
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Kamm W, Berger JP. [Acute dyspnea and maculo-papular eruption after taking acenocoumarol (Sintrom]. Rev Med Suisse Romande 1998; 118:565-8. [PMID: 9689868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- W Kamm
- Hôpital Le Samaritain, Service de médecine interne, Vevey
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24
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Berger JP. [Low cerebral output, transient ischemic attack and syncope]. Rev Med Suisse Romande 1996; 116:597-604. [PMID: 8848682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- J P Berger
- Service de médecine, Hôpital du Samaritain, Vevey
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25
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Sinclair PM, Berger JP, Michaut X, Saint-Loup R, Chaux R, Berger H, Bonamy J, Robert D. Collisional broadening and shifting parameters of the Raman Q branch of H2 perturbed by N2 determined from speed-dependent line profiles at high temperatures. Phys Rev A 1996; 54:402-409. [PMID: 9913490 DOI: 10.1103/physreva.54.402] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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26
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Laurent A, Berger JP. [Evolution of bacterial species and their sensitivity to antibiotics in the laboratory of a small hospital]. Rev Med Suisse Romande 1996; 116:125-130. [PMID: 8701198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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27
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Forsman JW, Bonamy J, Robert D, Berger JP, Saint-Loup R, Berger H. H2-He vibrational line-shape parameters: Measurement and semiclassical calculation. Phys Rev A 1995; 52:2652-2663. [PMID: 9912547 DOI: 10.1103/physreva.52.2652] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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28
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Berger JP, Saint-Loup R, Berger H, Bonamy J, Robert D. Measurement of vibrational line profiles in H2-rare-gas mixtures: Determination of the speed dependence of the line shift. Phys Rev A 1994; 49:3396-3406. [PMID: 9910636 DOI: 10.1103/physreva.49.3396] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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29
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Laurent A, Berger JP. [Development of bacterial species and their sensitivity to antibiotics in the laboratory of a small hospital]. Rev Med Suisse Romande 1994; 114:351-6. [PMID: 8197356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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30
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Berger JP. [First-line medicine: problems of identity and of interface]. Rev Med Suisse Romande 1994; 114:91-3. [PMID: 8115779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- J P Berger
- Service de médecine, Hôpital du Samaritain, Vevey
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31
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Delarive J, Berger JP. [Hepatitis C: from pathogenesis to treatment]. Schweiz Rundsch Med Prax 1993; 82:1278-83. [PMID: 7505477] [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: 01/25/2023]
Abstract
Hepatitis C virus (HCV) belongs to the greater family of Flaviviridae. It is probably responsible for the majority of NANB hepatitis. Serologic evidence in the term of antibodies against certain parts of HCV persists in 60 to 100% of patients with NANB hepatitis after blood transfusion. The evidence for the existence of a second virus responsible for NANB has not been excluded as inactivation-studies would suggest. HCV is also a common cause for sporadic acute hepatitis. It is the purpose of this article to present diagnosis, course and treatment of this form of hepatitis.
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32
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Berger JP. [The concept of a coordinated health care network of The Riviera]. Rev Med Suisse Romande 1993; 113:725-731. [PMID: 8210903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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33
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Klay M, Jaccard C, Othenin-Girard N, Suard F, Berger JP. [Psychiatric morbidity in the medical service of a non-university general hospital]. Schweiz Med Wochenschr 1993; 123:1508-1515. [PMID: 8372335] [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: 05/22/2023]
Abstract
The aim of this study was to assess the nature and extent of psychiatric pathology in the internal medicine service of a small general hospital. During a three months' period, 315 consecutive patients were enrolled in this prospective study. 92 persons (29% of the admitted patients) exhibited a psychiatric disorder which was recognized by the internists and then discussed with the psychiatric team. The disorders were diagnosed according to the DSM-III-R classification. The age of the patients with psychiatric disorders was lower (median 56 years versus 63 years) and women were more numerous. In 75% of cases the psychiatric problem influenced medical management. A psychiatric consultation was indicated in 12%. Concerning the nature of this pathology, 29% of the 120 diagnoses established in these 92 patients were linked to the use of psychoactive substances; alcohol and male sex predominated. Among the women, anxio-depressive and personality disorders predominated. Two-thirds of the patients were sent to a general practitioner following their discharge from the hospital. The role of the general hospital as a site of care for these patients is discussed. It can be considered positive if a good climate of cooperation exists with the psychiatric team.
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Affiliation(s)
- M Klay
- Service de médecine, Hôpital Le Samaritain, Vevey
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Berger JP, Chastonay P. [Headache and acute respiratory distress in a young woman]. Rev Med Suisse Romande 1993; 113:231-236. [PMID: 8480119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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35
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Berger JP, Essinger A, Vaney AC. [Peripheral thrombosis in the sequelae of a stroke]. Rev Med Suisse Romande 1993; 113:41-7. [PMID: 8434218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- J P Berger
- Service de médecine, Hôpital du Samaritain, Vevey
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36
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Mueller XM, Berger JP. [Blood pressure measurement during tachyarhythmia: validation of a graduated measuring technique with an intra-arterial technique]. Schweiz Med Wochenschr 1992; 122:1961-4. [PMID: 1475660] [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: 12/27/2022]
Abstract
Use of the usual technique to measure blood pressure is known to be unsatisfactory in tachyarrhythmia. An easy and non-invasive technique, called the stage by stage method, has therefore been proposed. The aim of the present study is to verify the precision of this method by comparison with intraarterial measurements. The study was performed in 9 tachyarrhythmic patients with heart rate over 90/min and wide systolic pulse amplitude variations. For systolic pressure, the results show an excellent correlation between the blood pressure values obtained by the stage by stage method and those obtained by intraarterial measurements (r = 0.99; p > 0.01). For diastolic pressure, the best practical approximation is the value of the last stage before all sounds have disappeared plus 5 mm Hg. We conclude that the bedside stage by method is worth performing in patients presenting with tachyarrhythmia and wide systolic pressure variations from one systole to the other.
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Berger JP. [Palliative care: fashion or necessity?]. Rev Med Suisse Romande 1991; 111:731-2. [PMID: 1719600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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38
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Berger JP. [A day of reflection on palliative care (Vevey, June 1990). From diagnosis to prognosis]. Rev Med Suisse Romande 1991; 111:735-6. [PMID: 1719601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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39
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Landry P, Kamm W, Bille J, Berger JP. [Antibiotic sensitivity of bacteria isolated in the laboratory of a small hospital compared to those of a large hospital]. Rev Med Suisse Romande 1991; 111:151-6. [PMID: 2020790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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40
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Tagan D, Boesch C, Baur A, Berger JP. Historia morbi atrocis--2 new cases of spontaneous rupture of the esophagus (Boerhaave syndrome). Schweiz Med Wochenschr 1990; 120:1766-70. [PMID: 2255882] [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: 12/31/2022]
Abstract
We report the case of two patients hospitalized within a few weeks of each other and both presenting with spontaneous rupture of the esophagus whose evolution proved fatal. We take the opportunity of drawing attention to this rare and challenging disease, which is often diagnosed too late.
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Affiliation(s)
- D Tagan
- Service de médecine, Hôpital Le Samaritain, Vevey
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Berger JP. [Laboratory results in clinical procedures]. Rev Med Suisse Romande 1990; 110:913-21. [PMID: 2244105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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42
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Landry P, Kamm W, Berger JP. [The nature of bacterial species isolated in the laboratory of a small hospital]. Rev Med Suisse Romande 1990; 110:625-32. [PMID: 2382071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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43
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Berger JP, Buclin T, Haller E, Van Melle G, Yersin B. Right arm involvement and pain extension can help to differentiate coronary diseases from chest pain of other origin: a prospective emergency ward study of 278 consecutive patients admitted for chest pain. J Intern Med 1990; 227:165-72. [PMID: 2313224 DOI: 10.1111/j.1365-2796.1990.tb00138.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [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: 12/31/2022]
Abstract
In a prospective study of 278 consecutive patients admitted to an emergency ward for chest pain, the 115 clinical and paraclinical parameters available at the time of admission were evaluated by computer comparison with the final diagnoses. The most valuable items for making the diagnosis were classified according to their sensitivity, specificity and predictive value. Among the 278 patients, 100 individuals had myocardial infarctions (MI), 47 had unstable angina, 25 had stable angina and 106 patients had a non-coronary disease. The twelve most sensitive items for distinguishing MI from other conditions were the following: sudden onset of pain (70%); duration of more than 60 min (88%); constriction and squeezing (79%); oppression (75%); prior anginal attacks (61%); sex male (72%); age over 60 years (74%); abnormal heart auscultation (62%); abnormal electrocardiogram (ECG) (98%); segment (ST) disturbances (86%); increased glucose level (77%); CKMB fraction greater than 6% of total creatine kinase (CK) level (63%). Among the twelve most specific items, also with the best positive predictive value, irradiation in the right arm is of most importance; among the 51 patients with right arm involvement, 48 suffered from a coronary disease and 41 from a myocardial infarction. The largest extension of pain was reported in the latter group. It is concluded that chest pain with a wide irradiation involving the right arm strongly suggests that a myocardial infarction is ongoing.
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Affiliation(s)
- J P Berger
- Department of Internal Medicine, Centre Hospitalier Universitaire Vaudois, Switzerland
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Abstract
In a retrospective study of 78 cases of adult meningitis, the CSF lactate was measured on the first spinal tap (ST); 25 had a bacterial meningitis, 28 a viral meningitis; 22 other cases had been on antibiotics prior to admission; 3 cases had meningitis of rare aetiology. The median CSF lactate level among the 25 bacterial cases amounted to 13.6 mmol/l (range: 3.5-24.5) whereas it remained low in the 28 viral cases: 2.7 mmol/l (range: 1.4-4.2). These differences are highly significant. The comparison of the CSF lactate level with the other tests routinely performed showed that the CSF lactate level had the highest sensitivity, specificity and predictive values. The CSF lactate level on the first ST had no prognostic value, but a rapid decrease of the CSF lactate during the treatment is indicative of good prognosis. Among the pretreated cases, a high lactate level could be an indication that bacteria were the causal agents. In conclusion, the measurement of the CSF lactate, quickly performed and inexpensive, is worth performing when a meningitis is suspected, as it appears to be the best way of distinguishing bacterial from non-bacterial meningitis.
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Affiliation(s)
- B Genton
- Département de Médecine Interne, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
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Michetti P, Berger JP. [Practical consequences of ambulatory registration of blood pressure]. Schweiz Med Wochenschr 1989; 119:394-8. [PMID: 2711154] [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: 01/02/2023]
Abstract
Ambulatory recorded blood pressure (BP) has been shown to correlate better with secondary target-organ damage than casual blood pressure, and has demonstrated that ambulatory BP cannot be predicted on the basis of casual BP measurements by the physician. To assess whether these recordings have practical repercussions on diagnosis and treatment, 182 patients (74 female/108 male) aged 16 to 84 years (mean 51.9 +/- 14.8 SD), all referred by their physicians to the investigation unit of the hospital, underwent ambulatory BP measurements using the portable Remler M2000 BP recorder. The mean systolic blood pressure was above 140 mm Hg in 96 patients (53%) and the mean diastolic blood pressure above 90 mm Hg in 81 (45%). -3 to 9 months later, multiple choice questionnaires were sent to the 34 physicians who had referred patients and had meanwhile received recording results without comments. The questions were designed ascertain the indication for BP recording in each patient and the changes undertaken in the light of the results. In 27% of the cases the assumed diagnosis was not confirmed and in 40.8% of the cases the planned or prescribed treatment was obviated or withdrawn. This percentage corresponds to the data previously published describing 30 to 40% of patients as hypertensive only in the physician's office. This latter percentage shows that ambulatory BP recordings contribute to the practical assessment of patients with mild to moderate elevation of office BP.
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Affiliation(s)
- P Michetti
- Service de médecine interne, Le Samaritain, Hôspital de zone de Vevey
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Hervé F, Soulier J, Berger JP. [Opso-myoclonic syndrome and Coxsackie B3]. Arch Fr Pediatr 1988; 45:597-8. [PMID: 2850776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Berger JP. [Pressure determination in tachycardia. Improved approximation using a stage-by-stage technic]. Schweiz Med Wochenschr 1988; 118:1304-10. [PMID: 3175575] [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: 01/04/2023]
Abstract
In heart arrhythmia, and especially tachyarrhythmia, blood pressure measurements are known to be approximate. The current recommendations proved to be unsatisfactory in a group of 23 patients in whom they were tested systematically. A simple atraumatic bedside method, developed from the standard method of measuring blood pressure by sphygmomanometer and called the "stage by stage" measurement method, is presented.
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Genton B, Berger JP. [Meningitis in adults at the Vaudois University Hospital Center. Diagnosis, management and development of 112 cases]. Rev Med Suisse Romande 1988; 108:795-803. [PMID: 3187291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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49
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Hervé F, Montoille H, Gras JC, Berger JP, Soulier J. [Cysts of the ovary during the neonatal period and the first months of life]. Ann Pediatr (Paris) 1988; 35:285-6. [PMID: 3291736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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50
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Berger JP, Delacrétaz F. [Syncope of undetermined origin]. Schweiz Med Wochenschr 1987; 117:2122-8. [PMID: 3433094] [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: 01/05/2023]
Abstract
A 48-year-old man with no significant medical history suddenly suffered, when walking, a sensation of thoracic pressure and severe dyspnea, soon followed by loss of consciousness without seizure. On hospitalization the following abnormal features were found: moderate cyanosis and cutaneous erythematous lesions; a blood gas analysis with moderate hypoxemia and slight compensated metabolic acidosis; and on chest X-ray a small band of atelectasis of the left lower lobe. An ECG, a continuous 24 hours Holter ECG recording and pulmonary scintigraphy were within normal limits. During the next few days the patient had several syncopal attacks without detectable cause. Two biopsies were then performed which established the diagnosis.
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Affiliation(s)
- J P Berger
- Département de médecine interne, Centre hospitalier universitaire vaudois, Lausanne
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