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Boström HLB, Emmerling S, Heck F, Koschnick C, Jones AJ, Cliffe MJ, Al Natour R, Bonneau M, Guillerm V, Shekhah O, Eddaoudi M, Lopez-Cabrelles J, Furukawa S, Romero-Angel M, Martí-Gastaldo C, Yan M, Morris AJ, Romero-Muñiz I, Xiong Y, Platero-Prats AE, Roth J, Queen WL, Mertin KS, Schier DE, Champness NR, Yeung HHM, Lotsch BV. How Reproducible is the Synthesis of Zr-Porphyrin Metal-Organic Frameworks? An Interlaboratory Study. Adv Mater 2024; 36:e2304832. [PMID: 37669645 DOI: 10.1002/adma.202304832] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/17/2023] [Indexed: 09/07/2023]
Abstract
Metal-organic frameworks (MOFs) are a rapidly growing class of materials that offer great promise in various applications. However, the synthesis remains challenging: for example, a range of crystal structures can often be accessed from the same building blocks, which complicates the phase selectivity. Likewise, the high sensitivity to slight changes in synthesis conditions may cause reproducibility issues. This is crucial, as it hampers the research and commercialization of affected MOFs. Here, it presents the first-ever interlaboratory study of the synthetic reproducibility of two Zr-porphyrin MOFs, PCN-222 and PCN-224, to investigate the scope of this problem. For PCN-222, only one sample out of ten was phase pure and of the correct symmetry, while for PCN-224, three are phase pure, although none of these show the spatial linker order characteristic of PCN-224. Instead, these samples resemble dPCN-224 (disordered PCN-224), which has recently been reported. The variability in thermal behavior, defect content, and surface area of the synthesised samples are also studied. The results have important ramifications for field of metal-organic frameworks and their crystallization, by highlighting the synthetic challenges associated with a multi-variable synthesis space and flat energy landscapes characteristic of MOFs.
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Affiliation(s)
- Hanna L B Boström
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569, Stuttgart, Germany
- Present address: Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-106 91, Sweden
| | - Sebastian Emmerling
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569, Stuttgart, Germany
| | - Fabian Heck
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569, Stuttgart, Germany
| | - Charlotte Koschnick
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569, Stuttgart, Germany
| | - Andrew J Jones
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Matthew J Cliffe
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Rawan Al Natour
- King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center (AMPM), Functional Materials Design, Discovery & Development Research Group (FMD3), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Mickaële Bonneau
- King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center (AMPM), Functional Materials Design, Discovery & Development Research Group (FMD3), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Vincent Guillerm
- King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center (AMPM), Functional Materials Design, Discovery & Development Research Group (FMD3), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Osama Shekhah
- King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center (AMPM), Functional Materials Design, Discovery & Development Research Group (FMD3), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Mohamed Eddaoudi
- King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center (AMPM), Functional Materials Design, Discovery & Development Research Group (FMD3), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Javier Lopez-Cabrelles
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto, 606-8501, Japan
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto, 606-8501, Japan
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - María Romero-Angel
- Instituto de Ciencia Molecular (ICMol), Universitat de València, Catedrático José Beltrán-2, Paterna, 46980, Spain
| | - Carlos Martí-Gastaldo
- Instituto de Ciencia Molecular (ICMol), Universitat de València, Catedrático José Beltrán-2, Paterna, 46980, Spain
| | - Minliang Yan
- Macromolecules innovation institute, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Amanda J Morris
- Macromolecules innovation institute, Virginia Tech, Blacksburg, VA, 24061, USA
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Ignacio Romero-Muñiz
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Ying Xiong
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Ana E Platero-Prats
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Jocelyn Roth
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Sion, CH-1950, Switzerland
| | - Wendy L Queen
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Sion, CH-1950, Switzerland
| | - Kalle S Mertin
- Institute of Inorganic Chemistry, Christian-Albrechts-University Kiel, 24118, Kiel, Germany
| | - Danielle E Schier
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Neil R Champness
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Hamish H-M Yeung
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Bettina V Lotsch
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569, Stuttgart, Germany
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, Haus D, 81377, Munich, Germany
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Borselli F, Maiwöger M, Zhang T, Haslinger P, Mukherjee V, Negretti A, Montangero S, Calarco T, Mazets I, Bonneau M, Schmiedmayer J. Two-Particle Interference with Double Twin-Atom Beams. Phys Rev Lett 2021; 126:083603. [PMID: 33709745 DOI: 10.1103/physrevlett.126.083603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/09/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
We demonstrate a source for correlated pairs of atoms characterized by two opposite momenta and two spatial modes forming a Bell state only involving external degrees of freedom. We characterize the state of the emitted atom beams by observing strong number squeezing up to -10 dB in the correlated two-particle modes of emission. We furthermore demonstrate genuine two-particle interference in the normalized second-order correlation function g^{(2)} relative to the emitted atoms.
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Affiliation(s)
- F Borselli
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
| | - M Maiwöger
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
| | - T Zhang
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
| | - P Haslinger
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
| | - V Mukherjee
- Indian Institute of Science Education and Research, 760010 Berhampur, India
| | - A Negretti
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, D-22761 Hamburg, Germany
| | - S Montangero
- Dipartimento di Fisica e Astronomia "G. Galilei," Università di Padova, I-35131 Padova, Italy
- INFN Sezione di Padova, I-35131 Padua, Italy
| | - T Calarco
- Forschungszentrum Jülich, Wilhelm-Johnen-Straße, D-52425 Jülich, Germany and University of Cologne, Institute for Theoretical Physics, D-50937 Cologne, Germany
| | - I Mazets
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
- Research Platform MMM "Mathematics-Magnetism-Materials," c/o Fakultät für Mathematik, Universität Wien, 1090 Vienna, Austria
| | - M Bonneau
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
| | - J Schmiedmayer
- Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria
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Haase F, Craig GA, Bonneau M, Sugimoto K, Furukawa S. Pseudo-5-Fold-Symmetrical Ligand Drives Geometric Frustration in Porous Metal–Organic and Hydrogen-Bonded Frameworks. J Am Chem Soc 2020; 142:13839-13845. [DOI: 10.1021/jacs.0c04450] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Frederik Haase
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, iCeMS Research Building, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Gavin A. Craig
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, iCeMS Research Building, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mickaële Bonneau
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, iCeMS Research Building, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kunihisa Sugimoto
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, iCeMS Research Building, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
- Japan Synchrotron Radiation Research Institute/SPring-8, Kouto, Sayo, Hyogo 679-5198, Japan
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, iCeMS Research Building, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Dhainaut J, Bonneau M, Ueoka R, Kanamori K, Furukawa S. Formulation of Metal-Organic Framework Inks for the 3D Printing of Robust Microporous Solids toward High-Pressure Gas Storage and Separation. ACS Appl Mater Interfaces 2020; 12:10983-10992. [PMID: 32045200 DOI: 10.1021/acsami.9b22257] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The shaping of metal-organic frameworks (MOFs) has become increasingly studied over the past few years, because it represents a major bottleneck toward their further applications at a larger scale. MOF-based macroscale solids should present performances similar to those of their powder counterparts, along with adequate mechanical resistance. Three-dimensional printing is a promising technology as it allows the fast prototyping of materials at the macroscale level; however, the large amounts of added binders have a detrimental effect on the porous properties of the solids. Herein, a 3D printer was modified to prepare a variety of MOF-based solids with controlled morphologies from shear-thinning inks containing 2-hydroxyethyl cellulose. Four benchmark MOFs were tested for this purpose: HKUST-1, CPL-1, ZIF-8, and UiO-66-NH2. All solids are mechanically stable with up to 0.6 MPa of uniaxial compression and highly porous with BET specific surface areas lowered by 0 to -25%. Furthermore, these solids were applied to high-pressure hydrocarbon sorption (CH4, C2H4, and C2H6), for which they presented a consequent methane gravimetric uptake (UiO-66-NH2, ZIF-8, and HKUST-1) and a highly preferential adsorption of ethylene over ethane (CPL-1).
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Affiliation(s)
- Jérémy Dhainaut
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mickaële Bonneau
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ryota Ueoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kazuyoshi Kanamori
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 606-8510, Japan
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Samama CM, Mazoyer E, Bruneval P, Ciostek P, Bonnin P, Bonneau M, Roussi J, Bailliart O, Pignaud G, Viars P, Caen JP, Drouet LO. Aprotinin Could Promote Arterial Thrombosis in Pigs: a Prospective Randomized, Blind Study. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1642500] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryHaemostatic properties of aprotinin could be associated with an increased risk of thrombosis. A randomized, blinded study was conducted to consider the potential thrombogenicity of aprotinin, using the Fobs’ model on femoral arteries in 12 pigs. The flow variations were measured by a pulsed Doppler in anaesthetised animals. Ear immersion bleeding time was performed. During the first part of the study, a stenosis was performed successively on both femoral arteries, each for a period of 30 min, without prior injury, to assess the integrity of the vessel, and to check that the arteries did not develop cyclic flow reductions (CFR), permanent cessation of flow (PCF) or partial thrombosis, when a stenosis is applied. Then the clamp was released and a bolus of placebo (saline), or aprotinin (4 millions KIU, followed by a continuous infusion of 1 million KIU · h−1), was administered. At the end of the bolus, the second part of the study began. Stenosis was applied to the arteries. If CRF, PCF, or partial thrombosis were observed without prior injury then the infused drug (aprotinin or saline) was considered a prothrombotic drug, and the opposite artery was studied. For each animal, right and left femoral artery segments were fixed and studied (morphologic study). Eighteen arteries were studied. In the aprotinin group, 6 arteries out of 8 developed an unexpected thrombosis, as compared with only 2 out of 10 arteries in the control group (p = 0.02). The morphologic study confirmed the occurrence of thrombosis in 4 out of 7 arteries in the aprotinin group, as compared with only 1 out of 9 in the control group. The ear immersion bleeding time was not different in either group. No difference could be demonstrated with regard to the values of activated partial thromboplastin time, prothrombin time and fibrinogen.Aprotinin may have promoted the development of thrombosis in the pig.
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Affiliation(s)
- Ch M Samama
- The Département d’Anesthésie, Hôpital Pitié, Paris, France
| | - E Mazoyer
- INSERM U 353, Institut des Vaisseaux et du Sang, Paris, France
| | - P Bruneval
- Département d’Anatomo-Pathologie, Hôpital Broussais, Paris, France
| | - P Ciostek
- INSERM U 353, Institut des Vaisseaux et du Sang, Paris, France
| | - Ph Bonnin
- Laboratoire d’Explorations fonctionnelles, Hôpital Lariboisière, Paris, France
| | | | - J Roussi
- INSERM U 353, Institut des Vaisseaux et du Sang, Paris, France
| | - O Bailliart
- Laboratoire d’Explorations fonctionnelles, Hôpital Lariboisière, Paris, France
| | - G Pignaud
- INSERM U 353, Institut des Vaisseaux et du Sang, Paris, France
| | - P Viars
- The Département d’Anesthésie, Hôpital Pitié, Paris, France
| | - J P Caen
- INSERM U 353, Institut des Vaisseaux et du Sang, Paris, France
| | - L O Drouet
- INSERM U 353, Institut des Vaisseaux et du Sang, Paris, France
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Samama CM, Bonnin P, Bonneau M, Pignaud G, Mazoyer E, Bailliart O, Maffrand JP, Viars P, Caen JP, Drouet LO. Comparative Arterial Antithrombotic Activity of Clopidogrel and Acetyl Salicylic Acid in the Pig. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1646307] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryWe investigated the comparative antithrombotic properties of clopidogrel, an analogue of ticlopidine, and aspirin, using the Folts' model on femoral arteries in 22 pigs. On each animal, clopidogrel or aspirin were used to treat the thrombotic process on the left femoral artery and to prevent this process on the right femoral artery. Sequentially: an injury and stenosis were carried out on the left femoral artery; the thrombotic process was monitored with a Doppler during a 30-min observation period for cyclic flow reductions or permanent cessation of flow; after the first cyclic flow reduction occurred, clopidogrel (5 mg kg-1) or aspirin (2.5, 5, 100 mg kg-1) were injected intravenously; if cyclic flow reductions were abolished, epinephrine (0.4 µg kg-1 min-1) was injected to try to restore cyclic flow reductions and/or permanent cessation of flow; then injury and stenosis were applied on the right femoral artery. Before and after injection of clopidogrel or aspirin, ear immersion bleeding times and ex-vivo platelet aggregation were performed. Clopidogrel (n = 7) abolished cyclic flow reductions in all animals and epinephrine did not restore any cyclic flow reduction. On the right femoral artery, cyclic flow reductions were efficiently prevented, even for two injuries. Basal bleeding time (5 min 28) was lengthened (>15 min, 30 min after clopidogrel and remained prolonged even after 24 h). ADP-induced platelet aggregation was inhibited (more than 78%). Comparatively, aspirin had a moderate and no dose-dependent effect. Aspirin 2.5 mg kg-1 (n = 6) abolished cyclic flow reductions in 2 animals, CFR reoccurred spontaneously in one animal and epinephrine restored it in a second animal. Aspirin 5 mg kg-1 (n = 6) abolished cyclic flow reductions in only 3 animals and epinephrine always restored it. Aspirin 100 mg kg-1 (n = 3) was unable to abolish cyclic flow reductions. On the right femoral artery, aspirin did not significantly prevent cyclic flow reductions which occurred in all animals after one (n = 14) or two injuries (n = 1), except for one animal. Basal bleeding time was lengthened but it shortened rapidly, reaching its basal value after 24 h. ADP-induced aggregation was not significantly inhibited, whereas arachidonic acid induced aggregation was always inhibited. Clopidogrel appears as a more potent antithrombotic drug than aspirin in this model, in treating and preventing spontaneous or epinephrine-induced cyclic flow reductions and lengthening bleeding time.
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Affiliation(s)
- Ch M Samama
- The Departement d'Anesthésie, Hôpital Pitié, Paris
| | - Ph Bonnin
- The Laboratoire d'Explorations fonctionnelles, Hôpital Lariboisière, Paris
| | - M Bonneau
- The I.N.R.A., Jouy-en-Josas, Institut des Vaisseaux et du Sang, Paris
| | - G Pignaud
- The I. N. S. E. R. M. U 353, Institut des Vaisseaux et du Sang, Paris
| | - E Mazoyer
- The I. N. S. E. R. M. U 353, Institut des Vaisseaux et du Sang, Paris
| | - O Bailliart
- The Laboratoire d'Explorations fonctionnelles, Hôpital Lariboisière, Paris
| | | | - P Viars
- The Departement d'Anesthésie, Hôpital Pitié, Paris
| | - J P Caen
- The I. N. S. E. R. M. U 353, Institut des Vaisseaux et du Sang, Paris
| | - L O Drouet
- The I. N. S. E. R. M. U 353, Institut des Vaisseaux et du Sang, Paris
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Mangione F, EzEldeen M, Bardet C, Lesieur J, Bonneau M, Decup F, Salmon B, Jacobs R, Chaussain C, Opsahl-Vital S. Implanted Dental Pulp Cells Fail to Induce Regeneration in Partial Pulpotomies. J Dent Res 2017; 96:1406-1413. [PMID: 28796952 DOI: 10.1177/0022034517725523] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Cell-based partial pulp regeneration is one of the promising approaches to obtain newly formed functional dentin-pulp complex. It relies on the preservation of the healthy tissue while regenerating the damaged pulp. The aim of this study was to investigate whether this regenerative process could be achieved by implanting porcine dental pulp cells (pDPCs) in pulp defects in the minipig. By split-mouth model, self-assembling injectable nanopeptide hydrogel, with and without pDPCs, was implanted after cameral pulpotomy in premolars and molars. At day 21 after surgery, 3-dimensional morphometric characterization, Masson's trichrome staining, and immunolabeling for DSP and BSP (dentin sialoprotein and bone sialoprotein) were performed on treated teeth. This study demonstrated no pulp regeneration but systematic reparative dentinogenesis. In fact, regardless of the presence of pDPCs in the scaffold, an osteodentin bridge-the microarchitecture of which significantly differed from the native dentin-was systematically obtained. Furthermore, the presence of pDPCs significantly affected the microstructure of the dentin bridges. In the radicular area of each treated tooth, hyperemia in the remaining pulp and external root resorptions were observed. Under the conditions tested in this work, pulp regeneration was not achieved, which highlights the need of further investigations to develop favorable regenerative microenvironment.
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Affiliation(s)
- F Mangione
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France
| | - M EzEldeen
- 3 OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Maxillofacial Surgery Department, University Hospitals Leuven, Leuven, Belgium
| | - C Bardet
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - J Lesieur
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - M Bonneau
- 4 XP-MED, Saint-Germain-en-Laye, France
| | - F Decup
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France
| | - B Salmon
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France.,5 AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR, Paris, France
| | - R Jacobs
- 3 OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Maxillofacial Surgery Department, University Hospitals Leuven, Leuven, Belgium
| | - C Chaussain
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France.,5 AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR, Paris, France
| | - S Opsahl-Vital
- 1 EA 2496 Laboratory Orofacial Pathologies, Imagery and Biotherapies, Dental School and Life imaging Platform (PIV), University Paris Descartes Sorbonne Paris Cité, Montrouge, France.,2 AP-HP, Departments of Odontology, University Hospitals Albert Chenevier, Louis Mourier and Bretonneau "National Rare Diseases Center Metabolism Phosphorus and Calcium" and Charles Foix, Paris, France.,5 AP-HP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Filière OSCAR, Paris, France
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McKenzie LK, Sazanovich IV, Baggaley E, Bonneau M, Guerchais V, Williams JAG, Weinstein JA, Bryant HE. Frontispiece: Metal Complexes for Two-Photon Photodynamic Therapy: A Cyclometallated Iridium Complex Induces Two-Photon Photosensitization of Cancer Cells under Near-IR Light. Chemistry 2017. [DOI: 10.1002/chem.201780262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Luke K. McKenzie
- Department of Oncology and Metabolism; University of Sheffield; Sheffield S10 2RX UK
- Department of Chemistry; University of Sheffield; Sheffield S3 7HF UK
| | - Igor V. Sazanovich
- Department of Oncology and Metabolism; University of Sheffield; Sheffield S10 2RX UK
- Department of Chemistry; University of Sheffield; Sheffield S3 7HF UK
- Harwell Science Campus; OX11 0QX UK
| | | | - Mickaële Bonneau
- Department of chemistry; Durham University; Durham DH1 3LE UK
- UMR CNRS 6226; Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Campus de Beaulieu; 35042 Rennes France
| | - Véronique Guerchais
- UMR CNRS 6226; Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Campus de Beaulieu; 35042 Rennes France
| | | | | | - Helen E. Bryant
- Department of Oncology and Metabolism; University of Sheffield; Sheffield S10 2RX UK
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McKenzie LK, Sazanovich IV, Baggaley E, Bonneau M, Guerchais V, Williams JAG, Weinstein JA, Bryant HE. Metal Complexes for Two-Photon Photodynamic Therapy: A Cyclometallated Iridium Complex Induces Two-Photon Photosensitization of Cancer Cells under Near-IR Light. Chemistry 2016; 23:234-238. [PMID: 27740703 PMCID: PMC5248616 DOI: 10.1002/chem.201604792] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Indexed: 11/26/2022]
Abstract
Photodynamic therapy (PDT) uses photosensitizers (PS) which only become cytotoxic upon light‐irradiation. Transition‐metal complexes are highly promising PS due to long excited‐state lifetimes, and high photo‐stabilities. However, these complexes usually absorb higher‐energy UV/Vis light, whereas the optimal tissue transparency is in the lower‐energy NIR region. Two‐photon excitation (TPE) can overcome this dichotomy, with simultaneous absorption of two lower‐energy NIR‐photons populating the same PS‐active excited state as one higher‐energy photon. We introduce two low‐molecular weight, long‐lived and photo‐stable iridium complexes of the [Ir(N^C)2(N^N)]+ family with high TP‐absorption, which localise to mitochondria and lysosomal structures in live cells. The compounds are efficient PS under 1‐photon irradiation (405 nm) resulting in apoptotic cell death in diverse cancer cell lines at low light doses (3.6 J cm−2), low concentrations, and photo‐indexes greater than 555. Remarkably 1 also displays high PS activity killing cancer cells under NIR two‐photon excitation (760 nm), which along with its photo‐stability indicates potential future clinical application.
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Affiliation(s)
- Luke K McKenzie
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2RX, UK.,Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
| | - Igor V Sazanovich
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2RX, UK.,Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.,Harwell Science Campus, OX11 0QX, UK
| | | | - Mickaële Bonneau
- Department of chemistry, Durham University, Durham, DH1 3LE, UK.,UMR CNRS 6226, Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Campus de Beaulieu, 35042, Rennes, France
| | - Véronique Guerchais
- UMR CNRS 6226, Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Campus de Beaulieu, 35042, Rennes, France
| | | | - Julia A Weinstein
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
| | - Helen E Bryant
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2RX, UK
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10
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Dang TT, Bonneau M, Gareth Williams JA, Le Bozec H, Doucet H, Guerchais V. Pd-Catalyzed Functionalization of the Thenoyltrifluoroacetone Coligands by Aromatic Dyes in Bis(cyclometallated) IrIIIComplexes: From Phosphorescence to Fluorescence? Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Abstract
In Europe the proportion of male pigs that are left ‘entire’ has been high for many years in the British Isles and Iberian Peninsula, and has recently increased in The Netherlands and to a lesser extent in Germany and France. Various European Union partners agreed in 2010 on a road map to abandon piglet castration by 1 January 2018. Despite significant commercial in-confidence research on instrumental methods for detecting boar-tainted carcasses at slaughter plants, nothing is currently being adopted at an industrial scale. A few abattoirs sort out the most heavily tainted carcasses, using human nose methods. However, there are major concerns with their accuracy, which is currently not documented in any publicly available technical report. The importance of androstenone and skatole for boar taint is still debated but a recent study (CAMPIG; G Backus, H Snoek, MA Oliver, M Font i Furnols, M Aluwé, F Tuyttens, M Bonneau, P Chevillon, MD Aaslyng, D Moerlein, L Meier-Dinkel, J Trautmann, J-E Haugen, unpubl. data) has established preliminary equations relating consumer dissatisfaction to androstenone and skatole levels. These equations still need further consolidation to integrate the impact of very high and very low androstenone levels on consumer acceptability. Reducing the incidence of boar taint at a production level and at the same time overcoming possible greater aggressive behaviour of entire male pigs are also critical for abandoning castration. Genetic selection is the most efficient way to reduce androstenone, but the selection of boar-taint-free genetic lines without any adverse consequence on the reproductive and growth performance will take time. Skatole levels can be efficiently reduced via feeding specific feedstuffs and good control of the animals’ environment. Provided that the incidence of boar taint can be reduced to an acceptable level and the residual tainted carcasses can be sorted out at a reasonable price by mutually recognised methods, the abandonment of castration will result in high benefits, up to one-billion euros for both the pork industry, via a drastic reduction of production costs, and society at large, through improved animal welfare and reduced impact on the environment.
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12
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Aranda B, Aguirre P, Moya SA, Bonneau M, Williams JG, Toupet L, Escadeillas M, Le Bozec H, Guerchais V. Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.06.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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13
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Nour S, Magkoutis N, Sideris G, Voicu S, Ouardani R, Kang C, Bonneau M, Bailliart O. Intrapulmonary artery balloon counterpulsation (PABC) improves outcome in post-ischemic cardiogenic shock. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Kubale V, Batorek N, Škrlep M, Prunier A, Bonneau M, Fazarinc G, Čandek-Potokar M. Steroid hormones, boar taint compounds, and reproductive organs in pigs according to the delay between immunocastration and slaughter. Theriogenology 2013; 79:69-80. [DOI: 10.1016/j.theriogenology.2012.09.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 09/13/2012] [Accepted: 09/17/2012] [Indexed: 11/26/2022]
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15
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Jaskula JC, Partridge GB, Bonneau M, Lopes R, Ruaudel J, Boiron D, Westbrook CI. Acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate. Phys Rev Lett 2012; 109:220401. [PMID: 23368107 DOI: 10.1103/physrevlett.109.220401] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Indexed: 06/01/2023]
Abstract
We have modulated the density of a trapped Bose-Einstein condensate by changing the trap stiffness, thereby modulating the speed of sound. We observe the creation of correlated excitations with equal and opposite momenta, and show that for a well-defined modulation frequency, the frequency of the excitations is half that of the trap modulation frequency.
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Affiliation(s)
- J-C Jaskula
- Laboratoire Charles Fabry, Institut d'Optique, CNRS, Université Paris-Sud, 2 avenue Augustin Fresnel, 91127 Palaiseau, France
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16
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Candek-Potokar M, Zlender B, Lefaucheur L, Bonneau M. Effects of age and/or weight at slaughter on longissimus dorsi muscle: Biochemical traits and sensory quality in pigs. Meat Sci 2012; 48:287-300. [PMID: 22063077 DOI: 10.1016/s0309-1740(97)00109-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/1997] [Revised: 09/12/1997] [Accepted: 09/16/1997] [Indexed: 10/18/2022]
Abstract
The effect of increasing either age alone through feed restriction, or both age and weight at slaughter, on the quality of the longissimus dorsi muscle (LM) was investigated. Starting at 83 days of age and 32 kg, 80 pigs were allotted within litter to four experimental groups. All pigs were free of RYR1 mutated gene. Pigs were fed either ad libitum (A100, A130) or restricted 30% (R100, R130) and slaughtered at either 100 kg (A 100, R100) or 130 kg (A130, R130) body weight. Restricting feed intake in order to increase age at the same weight resulted in slower growth, better feed efficiency and increased leanness, whereas increasing age and weight simultaneously elicited slower growth, reduced feed efficiency and fatter carcasses. Intramuscular fat (IMF) and muscle collagen concentration were reduced by restricted feeding. Increase in both age and weight of pigs resulted in lower water, and higher protein and IMF concentrations. Although pigs were free of RYR1 gene, the PSE condition (defined as pH1 ≤ 5.9) developed in 25 carcasses, with a higher incidence in restricted pigs. PSE animals were excluded from the subsequent analysis of meat quality data. Feed restriction resulted in higher drip loss and lower a(∗) and c(∗) (saturation index) values. Longer myofibril fragments in muscle of restricted pigs on day 1 post mortem are indicative of slower maturation, while longer fragments on day 4 in heavier pigs, suggest that the extent of post mortem tenderisation could be negatively affected by the elevation of slaughter weight. Feed restriction had no significant effect on meat sensory quality, whereas increase in both age and weight resulted in lower tenderness, chewiness and mouth coating scores. Our results indicate that increasing age at a given body weight, via feed restriction, reduced IMF and collagen concentrations, and the rate of post mortem proteolysis, however, this had no significant impact on pork quality assessed after 4 days of ageing. On the other hand, increasing both age and weight at slaughter could alter pork texture, in spite of elevated IMF concentration.
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Affiliation(s)
- M Candek-Potokar
- Agricultural Institute of Slovenia, Hacquetova 17, 1000 Ljubljana, Slovenia
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17
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Matthews KR, Homer DB, Punter P, Béague MP, Gispert M, Kempster AJ, Agerhem H, Claudi-Magnussen C, Fischer K, Siret F, Leask H, Font I Furnols M, Bonneau M. An international study on the importance of androstenone and skatole for boar taint: III. Consumer survey in seven European countries. Meat Sci 2012; 54:271-83. [PMID: 22060697 DOI: 10.1016/s0309-1740(99)00104-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/1998] [Revised: 03/05/1999] [Accepted: 08/08/1999] [Indexed: 10/18/2022]
Abstract
There has long been debate over the relative importance for consumer acceptability of androstenone and skatole. The objective of this study was to investigate consumer reaction to pig meat of varying levels of androstenone and skatole in seven member states of the European Union. Over 4000 entire male pigs (and 233 gilts as a control) were produced in six European countries, and a sub-sample of 420 were selected to represent a range of androstenone and skatole levels. Loin samples from these pigs were distributed to the seven participating countries. Samples were prepared and cooked according to standardised procedures in each of the countries and presented to pork consumers. Each consumer rated samples from five pigs for liking of flavour and liking of odour. Although there were significant differences between country panels in their liking of meat from entire males generally, there was a greater degree of dislike as both androstenone and skatole increased. This reaction was stronger for skatole than androstenone and consumers reacted more negatively in terms of odour than flavour.
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Affiliation(s)
- K R Matthews
- Meat and Livestock Commission, PO Box 44, Winterhill House, Snowdon Drive, Milton Keynes MK6 1AX, UK
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18
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Dijksterhuis GB, Engel B, Walstra P, Font I Furnols M, Agerhem H, Fischer K, Oliver MA, Claudi-Magnussen C, Siret F, Béague MP, Homer DB, Bonneau M. An international study on the importance of androstenone and skatole for boar taint: II. Sensory evaluation by trained panels in seven European countries. Meat Sci 2012; 54:261-9. [PMID: 22060696 DOI: 10.1016/s0309-1740(99)00103-5] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/1998] [Revised: 03/05/1999] [Accepted: 04/30/1999] [Indexed: 11/15/2022]
Abstract
The aim of the present study (part of an EU AIR programme on boar taint) was to make objective the perception of boar taint in entire male pork, and to relate the perception to skatole and androstenone levels. Trained analytical sensory panels in seven European countries assessed pig meat with known levels of androstenone and skatole. The panels performed a sensory profiling using the attributes pig, urine, manure/stable, naphthalene/mothballs, rancid, sweet, sweat and abnormal, both for odour and flavour in separate sessions. It turned out to be difficult to harmonise sensory methodology for seven sensory panels throughout the EU, especially with respect to the exact level of training the panellists received. Sensory panels in general were able to differentiate between the two compounds and between different levels of the compounds, though substantial differences between the panels in the different countries existed. Androstenone was found to relate mostly to the urine attribute, while skatole related mostly to manure and, to a lesser extent, to naphthalene.
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19
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Lecarpentier E, Morel O, Tarrade A, Dahirel M, Bonneau M, Gayat E, Evain-brion D, Chavatte-palmer P, Tsatsaris V. Quantification of utero-placental vascularization in a rabbit model of IUGR with three-dimensional power Doppler angiography. Placenta 2012; 33:769-75. [DOI: 10.1016/j.placenta.2012.06.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 05/22/2012] [Accepted: 06/19/2012] [Indexed: 10/28/2022]
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20
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Batorek N, Škrlep M, Prunier A, Louveau I, Noblet J, Bonneau M, Čandek-Potokar M. Effect of feed restriction on hormones, performance, carcass traits, and meat quality in immunocastrated pigs. J Anim Sci 2012; 90:4593-603. [PMID: 22829612 DOI: 10.2527/jas.2012-5330] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aim of this study was to assess the effect of feed restriction applied to immunocastrated pigs in the period after the second vaccination (V2) against GnRH on hormonal status, performance, carcass traits, and meat quality. Immunocastrated pigs (IC) were compared with entire males (EM) and surgical castrates fed ad libitum. Pigs (Large White × Landrace) × Pietrain were either left entire or surgically castrated within 1 wk after birth (SC, n = 22). At 83 d of age, the entire males were further allotted to treatment groups (individual housing) of ad libitum fed EM (n = 24), ad libitum fed IC (IC-L, n = 21), or restrictively fed IC (IC-R, n = 21). At that time, the first vaccination (V1) was applied to IC-L and IC-R pigs. One week after V2 (age 130 d), feed restriction (≈ 80% of the ad libitum feed intake of SC pigs) was applied to IC-R pigs. The experiment ended 5 wk after V2, when pigs were 165 d old. Immunocastration successfully reduced boar taint compounds and size of reproductive organs. At 130 d, serum leptin concentrations were similar in all groups, whereas IGF-I concentration was less in SC (P ≤ 0.002) than in the other groups. Three weeks after V2, leptin concentrations of both IC groups were in between EM (least) and SC (greatest). The reverse was observed for IGF-I. Feed restriction had no effect on leptin or IGF-I concentrations in IC pigs. In the period V1 to V2, performance differed mainly between EM and SC, whereas both IC groups had feed intake and feed conversion ratio similar to EM and intermediate daily BW gain, not differing from either EM or SC. After V2, IC-L pigs increased their feed intake to the concentrations of SC, with faster growth compared with the other 3 groups (P < 0.05) and fatter carcasses compared with EM pigs (P = 0.007). Similar performance and carcass leanness were observed for IC-R and EM pigs. During preslaughter handling more carcass lesions were noted in EM and IC-R than in IC-L or SC pigs (P < 0.002). Neither immunocastration nor feed restriction had any effect on meat quality, but EM had greater drip loss, less intramuscular fat, and decreased tenderness than SC pigs. In conclusion, restricting feed intake can increase production efficiency but also aggressiveness of IC pigs.
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Affiliation(s)
- N Batorek
- Agricultural Institute of Slovenia, Hacquetova ulica 17, SI-1000 Ljubljana, Slovenia
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21
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Kheruntsyan KV, Jaskula JC, Deuar P, Bonneau M, Partridge GB, Ruaudel J, Lopes R, Boiron D, Westbrook CI. Violation of the Cauchy-Schwarz inequality with matter waves. Phys Rev Lett 2012; 108:260401. [PMID: 23004939 DOI: 10.1103/physrevlett.108.260401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Indexed: 06/01/2023]
Abstract
The Cauchy-Schwarz (CS) inequality-one of the most widely used and important inequalities in mathematics-can be formulated as an upper bound to the strength of correlations between classically fluctuating quantities. Quantum-mechanical correlations can, however, exceed classical bounds. Here we realize four-wave mixing of atomic matter waves using colliding Bose-Einstein condensates, and demonstrate the violation of a multimode CS inequality for atom number correlations in opposite zones of the collision halo. The correlated atoms have large spatial separations and therefore open new opportunities for extending fundamental quantum-nonlocality tests to ensembles of massive particles.
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Affiliation(s)
- K V Kheruntsyan
- The University of Queensland, School of Mathematics and Physics, Brisbane, Queensland 4072, Australia
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22
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Moron F, Hoendervanger AL, Bonneau M, Bouton Q, Aspect A, Boiron D, Clément D, Westbrook CI. An oscillator circuit to produce a radio-frequency discharge and application to metastable helium saturated absorption spectroscopy. Rev Sci Instrum 2012; 83:044705. [PMID: 22559563 DOI: 10.1063/1.4705999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We present a rf gas discharge apparatus which provides an atomic frequency reference for laser manipulation of metastable helium. We discuss the biasing and operation of a Colpitts oscillator in which the discharge coil is part of the oscillator circuit. Radiofrequency radiation is reduced by placing the entire oscillator in a metal enclosure.
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Affiliation(s)
- F Moron
- Laboratoire Charles Fabry, Institut d'Optique, CNRS, Univ Paris Sud, 2 Avenue Augustin Fresnel, 91127 Palaiseau Cedex, France
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Bonneau M, Chevillon P. Acceptability of entire male pork with various levels of androstenone and skatole by consumers according to their sensitivity to androstenone. Meat Sci 2012; 90:330-7. [DOI: 10.1016/j.meatsci.2011.07.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 07/18/2011] [Accepted: 07/26/2011] [Indexed: 11/16/2022]
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Nochez Y, Salah S, Bonneau M, Majzoub S, Pisella PJ. Influence des aberrations optiques d’ordre élevé sur la capacité accommodative des patients présentant une presbytie débutante. J Fr Ophtalmol 2011; 34:715-22. [DOI: 10.1016/j.jfo.2011.03.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 02/27/2011] [Accepted: 03/09/2011] [Indexed: 10/17/2022]
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Moine L, Labarre D, Lams A, Wassef M, Bonneau M, Nguyen V, Laurent A. Abstract No. 219: A novel type of resorbable embolization microspheres with a controlled degradation rate. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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26
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Jaskula JC, Bonneau M, Partridge GB, Krachmalnicoff V, Deuar P, Kheruntsyan KV, Aspect A, Boiron D, Westbrook CI. Sub-poissonian number differences in four-wave mixing of matter waves. Phys Rev Lett 2010; 105:190402. [PMID: 21231151 DOI: 10.1103/physrevlett.105.190402] [Citation(s) in RCA: 6] [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: 07/30/2010] [Indexed: 05/30/2023]
Abstract
We demonstrate sub-Poissonian number differences in four-wave mixing of Bose-Einstein condensates of metastable helium. The collision between two Bose-Einstein condensates produces a scattering halo populated by pairs of atoms of opposing velocities, which we divide into several symmetric zones. We show that the atom number difference for opposing zones has sub-Poissonian noise fluctuations, whereas that of nonopposing zones is well described by shot noise. The atom pairs produced in a dual number state are well adapted to sub-shot-noise interferometry and studies of Einstein-Podolsky-Rosen-type nonlocality tests.
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Affiliation(s)
- J-C Jaskula
- Laboratoire Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud, Campus Polytechnique RD128 91127 Palaiseau, France
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27
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Morel O, Pachy F, Chavatte-Palmer P, Bonneau M, Gayat E, Laigre P, Evain-Brion D, Tsatsaris V. Correlation between uteroplacental three-dimensional power Doppler indices and true uterine blood flow: evaluation in a pregnant sheep model. Ultrasound Obstet Gynecol 2010; 36:635-640. [PMID: 20617508 DOI: 10.1002/uog.7741] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
OBJECTIVES Three-dimensional (3D) Doppler quantification within the uteroplacental unit could be of great help in understanding and screening for pre-eclampsia and intrauterine growth restriction. Yet the correlation between 3D Doppler indices and true blood flow has not been confirmed in vivo. The aim of this study was to evaluate this correlation in a pregnant sheep model. METHODS A blood flow quantitative sensor and a controllable vascular occlusion system were placed around the common uterine artery in seven sheep in late pregnancy, while all the other arterial supplies were ligated. Several occlusion levels were applied, from 0 to 100%, simultaneously with 3D Doppler acquisitions of several placentomes, using standardized settings. Each placentome was analyzed using VOCAL™ (Virtual Organ Computer-aided AnaLysis) software. The correlation between true blood flow and Doppler indices (vascularization index (VI), flow index (FI) and vascularization flow index (VFI)) was evaluated, together with measurement reproducibility. RESULTS Forty-eight acquisitions were analyzed. All 3D Doppler indices were significantly correlated with true blood flow. Higher correlations were observed for VI and VFI (r = 0.81 (0.74-0.87), P < 0.0001 and r = 0.75 (0.67-0.82), P < 0.0001) compared with FI (r = 0.53 (0.38-0.64) P < 0.0001). Both intra- and interobserver reproducibility were high, with intraclass correlation coefficients of at least 0.799. CONCLUSION This is the first in-vivo experimental study confirming a significant correlation between true blood perfusion and quantitative 3D Doppler indices measured within the uteroplacental unit. These results confirm the potential usefulness of 3D Doppler ultrasound for the assessment of placental vascular insufficiency both in clinical cases and in a research setting.
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Affiliation(s)
- O Morel
- INRA, UMR 1198 Developmental Biology and Reproduction, Jouy-en-Josas, France.
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28
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Krachmalnicoff V, Jaskula JC, Bonneau M, Leung V, Partridge GB, Boiron D, Westbrook CI, Deuar P, Ziń P, Trippenbach M, Kheruntsyan KV. Spontaneous four-wave mixing of de Broglie waves: beyond optics. Phys Rev Lett 2010; 104:150402. [PMID: 20481974 DOI: 10.1103/physrevlett.104.150402] [Citation(s) in RCA: 5] [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: 11/21/2009] [Indexed: 05/29/2023]
Abstract
We investigate the atom-optical analog of degenerate four-wave mixing by colliding two Bose-Einstein condensates of metastable helium. The momentum distribution of the scattered atoms is measured in three dimensions. A simple analogy with photon phase matching conditions suggests a spherical final distribution. We find, however, that it is an ellipsoid with radii smaller than the initial collision momenta. Numerical and analytical calculations agree with this and reveal the interplay between many-body effects, mean-field interaction, and the anisotropy of the source condensate.
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Affiliation(s)
- V Krachmalnicoff
- Laboratoire Charles Fabry de l'Institut d'Optique, Univ Paris Sud, CNRS, Campus Polytechnique RD128 91127 Palaiseau France
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von Borell E, Oliver M, Fredriksen B, Edwards S, Bonneau M. Standpunkte, Praktiken und Kenntnisstand zur Ferkelkastration in Europa (PIGCAS) – Projektziele und erste Ergebnisse. J Verbrauch Lebensm 2008. [DOI: 10.1007/s00003-008-0332-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Bal dit Sollier C, Bonneau M, Kang C, Berge N, Brouland J, Baudin B, Drouet L. DIET MANIPULATION OF ATHEROSCLEROTIC LESIONS IN THE FHD PIG MODEL. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb03006.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Oulahal N, Martial-Gros A, Bonneau M, Blum L. Removal of meat biofilms from surfaces by ultrasounds combined with enzymes and/or a chelating agent. INNOV FOOD SCI EMERG 2007. [DOI: 10.1016/j.ifset.2006.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Monziols M, Bonneau M, Davenel A, Kouba M. Comparison of the lipid content and fatty acid composition of intermuscular and subcutaneous adipose tissues in pig carcasses. Meat Sci 2007; 76:54-60. [DOI: 10.1016/j.meatsci.2006.10.013] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2006] [Revised: 10/16/2006] [Accepted: 10/17/2006] [Indexed: 11/28/2022]
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Niborski V, Li Y, Brennan F, Lane M, Torché AM, Remond M, Bonneau M, Riffault S, Stirling C, Hutchings G, Takamatsu H, Barnett P, Charley B, Schwartz-Cornil I. Efficacy of particle-based DNA delivery for vaccination of sheep against FMDV. Vaccine 2006; 24:7204-13. [PMID: 16949709 DOI: 10.1016/j.vaccine.2006.06.048] [Citation(s) in RCA: 34] [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] [Received: 01/26/2006] [Revised: 05/26/2006] [Accepted: 06/20/2006] [Indexed: 11/29/2022]
Abstract
As an alternative strategy to classical inactivated viral vaccine against FMDV, naked DNA vaccine is attractive because of safety, flexibility and low cost. However DNA vaccination is usually poorly efficient in target species. Indeed we found that naked DNA plasmids encoding for P1-2A3C3D and GM-CSF proteins did not induce any detectable immunity against FMDV in sheep. Interestingly, we demonstrate herein that formulations of DNA on poly(D,L-lactide-co-glycolide) (PLG) or in lipofectin triggered divergent types of immune responses: PLG stimulated a T cell response and could elicit significant neutralising antibody titers, whereas lipofectin generated even higher antibody titers but no significant T cell response. The DNA/PLG regimen used in five sheep protected against clinical symptoms and viraemia and prevented the carrier state in four of them. Thus formulated DNA can be remarkably efficient against FMDV in a ruminant species that is usually refractory to DNA vaccination.
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Affiliation(s)
- V Niborski
- Virologie et Immunologie Moléculaires, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78350 Jouy-en-Josas, France
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Louail B, Sapoval M, Bonneau M, Wasseff M, Senechal Q, Gaux JC. A New Porcine Sponge Material for Temporary Embolization: An Experimental Short-Term Pilot Study in Swine. Cardiovasc Intervent Radiol 2006; 29:826-31. [PMID: 16528629 DOI: 10.1007/s00270-004-0299-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To evaluate the safety and efficacy of a porcine-derived gelfoam, Curaspon, for the temporary occlusion of the visceral arteries. METHODS Curaspon was used for the selective embolization of segmentary hepatic, unilateral polar renal, and single lumbar arteries of 10 pigs under general anesthesia. Sequential angiographic checks were carried out and the pigs killed between 3 days and 2 weeks later. Macroscopic and microscopic studies using standard techniques were used to evaluate the immediate efficacy of embolization, duration of and completeness of recanalization on angiography, macroscopic appearance of target-organ ischemia, and microscopic analysis of inflammatory reaction. RESULTS Immediate arterial occlusion was obtained in all cases. Renal arteries showed a total recanalization in 63% of cases on day 7 and 100% on day 14. Total hepatic recanalization was obtained in 100% of animals on day 7. All lumbar arteries were recanalized on day 14. Microscopic analysis in the kidney revealed a mild inflammatory reaction and a progressive lysis of the Curaspon (87% of samples at day 3 showed a persistence of Curaspon and 5% at day 14). In some cases, localized and partial destruction of the arterial wall was visualized. In the liver the same patterns were observed but resolved more completely and more rapidly. CONCLUSIONS Curaspon is an efficient material for the temporary occlusion of visceral and parietal arteries in pigs. However, arterial aneurysms were observed and a relationship of these with the material cannot be excluded.
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Affiliation(s)
- B Louail
- Department of Cardiovascular Radiology, Hôpital Européen Georges Pompidou, 20 Rue Leblanc, Paris 75015, France
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Monziols M, Collewet G, Bonneau M, Mariette F, Davenel A, Kouba M. Quantification of muscle, subcutaneous fat and intermuscular fat in pig carcasses and cuts by magnetic resonance imaging. Meat Sci 2006; 72:146-54. [DOI: 10.1016/j.meatsci.2005.06.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2005] [Revised: 06/24/2005] [Accepted: 06/24/2005] [Indexed: 11/25/2022]
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Monziols M, Bonneau M, Davenel A, Kouba M. Tissue distribution in pig carcasses exhibiting large differences in their degree of leanness, with special emphasis on intermuscular fat. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.livprodsci.2005.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Di Centa I, Coggia M, Bonneau M, Goëau-Brissonnière O. Experimental development of an endovascular graft for thoraco-abdominal aortic aneurysm repair. J Cardiovasc Surg (Torino) 2005; 46:485-9. [PMID: 16278639] [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: 05/05/2023]
Abstract
AIM Current treatment of thoraco-abdominal aortic aneurysms is surgical. Despite significant advances in surgical technique and anesthetic management, significant morbidity and mortality remain associated with their repair. In compliance with principles of reducing postoperative morbidity, we developed a thoraco-abdominal endovascular graft in experimental models of type III and type IV thoraco-abdominal aortic aneurysm. This device had to preserve the vascularization of the visceral arteries while ensuring full aneurysmal exclusion. METHODS Six implantations of the endovascular graft were performed. This graft was a modular system, made of: 1) a custom made main body containing 4 prosthetic visceral branches, 2) 4 self-expandable stent-grafts connecting prosthetic visceral branches with visceral arteries, 3) a custom made tubular endovascular graft connecting the main body with one of the iliac arteries. RESULTS On angiographic controls, full aneurysmal exclusion was achieved while maintaining visceral artery perfusion. At the end of each procedure, the experimental model was opened. Macroscopic examination showed harmonious thoraco-abdominal endovascular graft deployments, without abnormal component constraint or kinking. There was no discordance between macroscopic and angiographic RESULTS CONCLUSIONS Our experimental work led to the development of a thoraco-abdominal endovascular graft, demonstrating feasibility of thoraco-abdominal aneurysm endoluminal treatment on an in vitro model close to the anatomical conditions observed in human pathology.
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Affiliation(s)
- I Di Centa
- Department of Vascular Surgery, Ambroise Paré University Hospital, Boulogne-Billancourt,France
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Bal dit Sollier C, Kang C, Berge N, Herault JP, Bonneau M, Herbert JM, Drouet L. Activity of a synthetic hexadecasaccharide (SanOrg123781A) in a pig model of arterial thrombosis. J Thromb Haemost 2004; 2:925-30. [PMID: 15140128 DOI: 10.1111/j.1538-7836.2004.00719.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The activity of SanOrg123781A, a new synthetic antithrombotic drug inhibiting both factor Xa and thrombin through antithrombin (AT), was compared to that of unfractionated heparin (UFH) and of the synthetic pentasaccharide (fondaparinux, SP) in an ex vivo arterial thrombosis model in the pig. Six groups of four pigs were administered intravenously with SanOrg123781A (1, 3, 10 and 30 nmol kg(-1)), UFH (30 nmol kg(-1)) or SP (30 nmol kg(-1)). In this arterial model in which platelet thrombus was formed on a thrombogenic surface under a constant high shear rate, UFH and SP had moderate antithrombotic effects while SanOrg123781A exhibited a strong, dose-dependent inhibitory activity on platelet adhesion and platelet thrombus formation. In contrast to UFH, SanOrg123781A did not modify the activated partial thromboplastin time (aPTT) even at 30 nmol kg(-1), but strongly inhibited thrombin generation. At the same dose, despite a lower antithrombotic activity than SanOrg123781A, UFH significantly affected all the coagulation parameters. Taken together, these results show that SanOrg123781A, due to its potent and selective antifactor Xa and antifactor IIa activities is a promising new antithrombotic agent even in arterial setting.
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Affiliation(s)
- C Bal dit Sollier
- Laboratoire de Thrombose et d'Athérosclérose, IVS-INSERM Hôpital Lariboisière, Paris and INRA, Jouy en Josas, France.
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Quintanilla R, Demeure O, Bidanel JP, Milan D, Iannuccelli N, Amigues Y, Gruand J, Renard C, Chevalet C, Bonneau M. Detection of quantitative trait loci for fat androstenone levels in pigs. J Anim Sci 2003; 81:385-94. [PMID: 12643481 DOI: 10.2527/2003.812385x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A QTL analysis of fat androstenone levels from a three-generation experimental cross between Large White and Meishan pig breeds was carried out. A total of 485 F2 males grouped in 24 full-sib families, their 29 parents and 12 grandparents were typed for 137 markers distributed over the entire porcine genome. The F2 male population was measured for fat androstenone levels at 100, 120, 140, and 160 d of age and at slaughter around 80 kg liveweight. Statistical analyses were performed using two interval mapping methods: a line-cross (LC) regression method, which assumes alternative alleles are fixed in founder lines, and a half- full-sib (HFS) maximum likelihood method, where allele substitution effects were estimated within each half- and full-sib family. Both methods revealed genomewide significant gene effects on chromosomes 3, 7, and 14. The QTL explained, respectively, 7 to 11%, 11 to 15%, and 6 to 8% of phenotypic variance. Three additional significant QTL explaining 4 to 7% of variance were detected on chromosomes 4 and 9 using LC method and on chromosome 6 using HFS method. Suggestive QTL were also obtained on chromosomes 2, 10, 11, 13, and 18. Meishan alleles were associated with higher androstenone levels, except on chromosomes 7, 10, and 13, although 10 and 13 additive effects were near zero. The QTL had essentially additive effects, except on chromosomes 4, 10, and 13. No evidence of linked QTL or imprinting effects on androstenone concentration could be found across the entire porcine genome. The steroid chromosome P450 21-hydroxylase (CYP21) and cytochrome P450 cholesterol side chain cleavage subfamily XIA (CYP11A) loci were investigated as possible candidate genes for the chromosome 7 QTL. No mutation of coding sequence has been found for CYP21. Involvement of a candidate regulatory mutation of CYP11A gene proposed by others can be excluded in our animals.
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Affiliation(s)
- R Quintanilla
- Institut National de la Recherche Agronomique, France
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Roussi J, Berge N, Bal dit Sollier C, Bonneau M, André P, Pignaud G, Wassef M, Baillard O, Herbert JM, Drouet L. Clopidogrel-induced qualitative changes in thrombus formation correlate with stent patency in injured pig cervical arteries. Thromb Res 2002; 105:209-16. [PMID: 11927126 DOI: 10.1016/s0049-3848(02)00027-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Thienopyridines (ticlopidine or clopidogrel) alone or in combination with aspirin are now the reference antiplatelet therapy after stent implantation. To better understand the high efficacy and low risk of bleeding with these agents, we tested clopidogrel alone or with aspirin in an acute ex vivo flow chamber model and in a subacute in vivo arterial thrombosis model. Clopidogrel induced a dose-dependent increase in bleeding time (BT), inhibited ADP-induced platelet aggregation and in the flow chamber reduced thrombus size, and changed thrombus structure to broad-based structure composed of nondegranulated loosely attached platelets contrasting with the tight clumps of degranulated platelets seen without clopidogrel. The in vivo model involved angioplasty and stenting at the site of a preinduced arterial lesion and thrombosis in pig carotid arteries. Clopidogrel alone or with aspirin (but not aspirin alone) decreased the number of stented vessels occluded for more than 24 h and conversely reduced the number of occluding thrombus. At 96 h after stenting, 100% and 90% of the arteries were patent with clopidogrel/aspirin and clopidogrel alone, respectively (vs. 67% and 44% with aspirin and saline, respectively). Clopidogrel destabilizes thrombus without complete abolishment of platelet reactivity.
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Affiliation(s)
- J Roussi
- Laboratoire d'hématologie, Hôpital Raymond Poincaré, 104 Bd R. Poincaré, 92380 Garches, France.
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Pelage JP, Laurent A, Bonneau M, Wassef M, Rymer R, Merland JJ. Arterial blood supply to the uterus in nonpregnant sheep: a pertinent model for clinical practice? Invest Radiol 2001; 36:721-5. [PMID: 11753143 DOI: 10.1097/00004424-200112000-00007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
RATIONALE AND OBJECTIVES Our goal was to study the arterial supply to the sheep uterus to compare its similarity with that of women and to evaluate the interest of this animal model for training in uterine artery embolization. METHODS Ten nonpregnant sheep underwent aortography and selective study of the ovarian, internal iliac, uterine, and vaginal arteries. RESULTS The uterus was supplied mainly by the uterine arteries in all sheep. The ovarian artery, which was identified in five sheep, had a thin anastomosis with the ipsilateral uterine artery at the tubal junction. The vaginal artery provided blood flow to the inferior part of the cervix and anastomosed with the ipsilateral uterine artery. CONCLUSIONS Because uterine vascularization of nonpregnant sheep is similar to that of women, the sheep represents an appropriate model for experimental uterine artery embolization. This model should be used for interventional radiologists in training not familiar with endovascular navigation inside pelvic arteries.
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Affiliation(s)
- J P Pelage
- Department of Vascular and Body Imaging, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France.
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Le Blanche AF, Bazot MJ, Bonneau M, Farres MT, Wassef M, Levy B, Bigot JM, Boudghene F. Evaluation of renal arteries with use of gadoterate meglumine-, CO(2)-, and iodixanol-enhanced DSA measurements versus histomorphometry in renal artery restenosis in rabbits. J Vasc Interv Radiol 2001; 12:747-52. [PMID: 11389227 DOI: 10.1016/s1051-0443(07)61447-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To experimentally evaluate gadolinium (Gd)-, carbon dioxide (CO(2))-, and iodixanol-enhanced digital subtraction angiography (DSA) versus histomorphometry in the assessment of renal artery stenosis. MATERIALS AND METHODS Fifteen male New Zealand White rabbits weighing 4.0 kg underwent percutaneous catheterization. Renal artery stenosis was induced by bilateral overdilation-deendothelialization (balloon diameter = 2 mm). The percentage of artery overdilation was 33%. After 4 weeks, the rabbits were randomized into two groups: group A underwent right-sided therapeutic percutaneous transluminal renal angioplasty (PTRA) (balloon diameter = 1.5 mm). After another 4 weeks, the renal arteries were evaluated by gadoterate-, iodixanol-, and CO(2)-enhanced selective quantitative DSA. The rabbits were then killed and renal arteries were perfusion-fixed for 60 minutes. Serial orcein-stained 4-um-thick slices were prepared for histomorphometry. RESULTS Based on morphometric data of single-stenosis versus post-PTRA restenosis lesions, no significant difference was observed between Gd- and iodixanol-enhanced quantitative DSA (r(2) > 0.95), although the iodine/Gd density ratio was equal to 3.5. Carbon dioxide less reliably allowed quantitative DSA (r(2) < 0.75). CONCLUSION Gd-based contrast agents represent a highly reliable alternative in experimental quantitative DSA evaluation of renal artery restenosis.
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Affiliation(s)
- A F Le Blanche
- Department of Radiology and Medical Imaging, Charles Foix-Jean Rostand University Hospital, Ivry-sur-Seine, France.
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Hainaud P, Bonneau M, Pignaud G, Bal dit Sollier C, André P, Hadjiisky P, Fieffé JP, Caen JP, Herbert JM, Dol F, Drouet LO. The calcium inhibitor SR33805 reduces intimal formation following injury of the porcine carotid artery. Atherosclerosis 2001; 154:301-8. [PMID: 11166762 DOI: 10.1016/s0021-9150(00)00487-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We studied the effect of SR33805, a calcium channel blocker, in vitro on the proliferation of vascular smooth muscle cells (SMC) stimulated by foetal calf serum, basic fibroblast growth factor and platelet derived growth factor, and in vivo with regard to SMC migration and proliferation which occurred following injury of the porcine carotid artery. The intimal lesion was induced by a silasten collar surgically positioned around the carotid artery and by a stenosis reducing blood flow by 50% for 30 days. Animals received SR33805 (5 mg/kg/day) 8 days before the induction of the lesion and up to 30 days after. In vitro, SR33805 inhibited in a dose-dependent manner growth factor-induced proliferation of SMC (0.20<IC(50)<0.46 microM). In vivo, SR33805 reduced the intima/media ratio of the cross sectional surface area (decrease of 60%, P<0.05) without affecting neointimal SMC density. The medial SMC density was 40% lower in treated than in control animals (upstream, P<0.05 and downstream to the stenosis, P<0.01). Thus, it appears that SR33805 significantly reduced intimal hyperplasia, which occurred after perivascular manipulation of the artery, an effect consistent with its in vitro proliferation inhibitory activity, suggesting that long-term treatment with SR33805 may reduce or delay SMC proliferation.
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Affiliation(s)
- P Hainaud
- Institut des Vaisseaux et du Sang, Hôpital Lariboisière, 8 rue Guy Patin, 75475 Cedex 10, Paris, France
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Oulahal-Lagsir N, Martial-Gros A, Bonneau M, Blum LJ. Ultrasonic methodology coupled to ATP bioluminescence for the non-invasive detection of fouling in food processing equipment--validation and application to a dairy factory. J Appl Microbiol 2000; 89:433-41. [PMID: 11021575 DOI: 10.1046/j.1365-2672.2000.01132.x] [Citation(s) in RCA: 27] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The use of an ultrasonic apparatus (40 kHz) for the non-destructive, rapid and reproducible removal of biofilm from standard materials (stainless steel and polypropylene) in a dairy factory was investigated. The application of ultrasound with the tested conditions (10 s and 40 kHz) was found not to be detrimental for standard ATP (concentration ranging between 5 x 10(-9) and 10(-5) mol 1(-1)) and for prokaryotic cells, including both rods and coccoid-shaped bacteria (Escherichia coli and Staphylococcus aureus). It allowed the use of the ATP bioluminescence measurement for quantifying the biofilm removal. The repeatability of industrial milk removal was determined on fouled stainless steel and polypropylene sheets. The variability of the results with the sonication method was constant, +/-24% (coefficient of variation) for both surfaces, and was variable with the swabbing method, +/-42% for the stainless steel sheet and +/-74% for the polypropylene sheet. The ultrasonic apparatus removed twice the amount of industrial milk biofilm compared with the swabbing method in the case of the polypropylene sheets. The apparatus was used to validate the industrial cleaning protocols of a milk factory.
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Affiliation(s)
- N Oulahal-Lagsir
- Laboratoire de Recherche en Génie Industriel Alimentaire, Université Lyon 1-IUT A Génie Biologique, Bourg En Bresse, France
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Sellier P, Le Roy P, Fouilloux M, Gruand J, Bonneau M. Responses to restricted index selection and genetic parameters for fat androstenone level and sexual maturity status of young boars. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0301-6226(99)00127-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bonneau M, Kempster A, Claus R, Claudi-Magnussen C, Diestre A, Tornberg E, Walstra P, Chevillon P, Weiler U, Cook G. An international study on the importance of androstenone and skatole for boar taint: I. Presentation of the programme and measurement of boar taint compounds with different analytical procedures. Meat Sci 2000; 54:251-9. [DOI: 10.1016/s0309-1740(99)00102-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/1998] [Revised: 03/05/1999] [Accepted: 04/30/1999] [Indexed: 11/26/2022]
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Bonneau M, Walstra P, Claudi-Magnussen C, Kempster A, Tornberg E, Fischer K, Diestre A, Siret F, Chevillon P, Claus R, Dijksterhuis G, Punter P, Matthews K, Agerhem H, Béague M, Oliver M, Gispert M, Weiler U, von Seth G, Leask H, Font i Furnols M, Homer D, Cook G. An international study on the importance of androstenone and skatole for boar taint: IV. Simulation studies on consumer dissatisfaction with entire male pork and the effect of sorting carcasses on the slaughter line, main conclusions and recommendations. Meat Sci 2000; 54:285-95. [DOI: 10.1016/s0309-1740(99)00105-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/1998] [Revised: 03/05/1999] [Accepted: 04/30/1999] [Indexed: 10/18/2022]
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Gondret F, Lebas F, Bonneau M. Restricted feed intake during fattening reduces intramuscular lipid deposition without modifying muscle fiber characteristics in rabbits. J Nutr 2000; 130:228-33. [PMID: 10720174 DOI: 10.1093/jn/130.2.228] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present study was conducted to determine the effects of feed restriction during fattening on muscle fiber characteristics and intramuscular lipid traits. From 11 wk of age onward, rabbits were given free access to feed (control group), or received 70% of the control feed intake (restricted group). At the same weight at slaughter, restricted-fed rabbits were 3 wk older than controls (18 vs. 15 wk). The longissimus lumborum (LL, white loin), biceps femoris (BF, white thigh) and semimembranosus proprius (SMP, red thigh) muscles were then removed, and biochemical and histochemical assays were performed. In the three muscles, there was no effect of feed restriction on mean fiber size or percentage of the different fiber types. Restricted vs. control feeding resulted in a significant reduction (P<0.001) in total lipid content in all three muscles. This reduction was paralleled by a decline (P<0.001) in the activities of the malic enzyme and glucose-6 phosphate dehydrogenase (G6PDH), generating NADPH for the support of fatty acid synthesis. The diet-induced variations in lipid concentration and enzyme activities were larger (P<0.05) in the pure oxidative SMP muscle than in the predominantly fast-twitch glycolytic LL and BF muscles. Whatever feeding status, the ratio of malic enzyme to G6PDH activities was sharply lower (P<0.001) in SMP than in BF and LL muscles (averaging 1.5 vs. 9 and 15, respectively). These data indicate that nutritional status regulates intramuscular lipid deposition, without changing fiber-type composition. Further studies are necessary to determine the role of G6PDH in the lipogenic process of oxidative vs. glycolytic muscles.
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Affiliation(s)
- F Gondret
- Institut National de la Recherche Agronomique, Station de Recherches Porcines, Castanet Tolosan, France
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Oulahal-Lagsir N, Martial-Gros A, Boistier E, Blum LJ, Bonneau M. The development of an ultrasonic apparatus for the noninvasive and repeatable removal of fouling in food processing equipment. Lett Appl Microbiol 2000; 30:47-52. [PMID: 10728560 DOI: 10.1046/j.1472-765x.2000.00653.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A new ultrasonic apparatus operating at a frequency of 40 kHz was developed to dislodge biofilms from food processing equipment in order to assess the effectiveness of cleaning protocols. Sonication conditions to remove biofilms and quantification by ATP-bioluminescence are described. An industrial meat process was developed at the laboratory level to form a biofilm with industrial characteristics. Our results show that the biofilm removal by sonication during 10 s is reproducible and four times greater compared to the swabbing method (83% removal of fouling material against 20%). Unlike the swabbing method, this ultrasonic apparatus permitted the immediately demonstration of the inefficiency (within 1 min) of an industrial meat cleaning protocol. This apparatus is portable, easy to use and can be operated by unskilled users.
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Brouland JP, Egan T, Roussi J, Bonneau M, Pignaud G, Bal C, Vaiman M, André P, Hervé P, Mazmanian GM, Drouet L. In vivo regulation of von willebrand factor synthesis: von Willebrand factor production in endothelial cells after lung transplantation between normal pigs and von Willebrand factor-deficient pigs. Arterioscler Thromb Vasc Biol 1999; 19:3055-62. [PMID: 10591687 DOI: 10.1161/01.atv.19.12.3055] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To evaluate the regulation of plasma von Willebrand factor (vWF) and its in situ production by endothelial cells (ECs), 12 swine leukocyte antigen (SLA)-compatible left lung transplantations were performed. Normal lungs were transplanted into 10 pigs homozygous for von Willebrand disease and into 2 normal pigs. Additionally, 1 normal pig underwent pneumonectomy, and 1 SLA-incompatible lung transplantation between normal pigs was performed. None of the transplanted animals received immunosuppressive therapy. Plasma vWF level was evaluated by ELISA and multimeric pattern. EC vWF content was assessed by immunohistochemistry. Global hemostasis was assessed by standardized ear bleeding time. Six of 12 SLA-compatible lung transplantations and the incompatible transplantation were successful and were used for the study. The functions and the viability of ECs, reflected by their ability to produce vWF and normal multimeric plasma vWF pattern, were preserved in SLA-compatible and -incompatible lung transplantations. vWF production was preserved in ECs that initially synthesized it. EC constitutive and storage pathways are modulated differently according to transplantation compatibility and severity of rejection. In SLA-compatible lung transplantations without histological evidence of rejection, the production of vWF was preserved, whereas constitutive vWF secretion appeared to be altered in cases with minor histological signs of rejection. In pigs with von Willebrand disease that were transplanted with normal lungs without sign of rejection, plasma vWF was significantly increased in an amount expected from the estimated production of a normal lung. In the transplanted normal lung, there was no vWF overexpression by the ECs and no recruitment of ECs that initially did not express vWF. In SLA-incompatible transplantation, ECs were morphologically normal with increased and blurred vWF labeling, whereas plasma vWF levels remained normal, reflecting that EC activation is associated with an increased vWF production with probable diversion to storage pathway. This model depicts the changes of EC regulation of vWF secretion in pig lung transplants. However, this model cannot be directly extrapolated to human organ transplantation because animals did not receive any immunosuppressive therapy, which may be toxic to ECs.
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Affiliation(s)
- J P Brouland
- Institut des Vaisseaux et du Sang, Service d'Anatomie et Cytologie Pathologiques, Hôpital Lariboisière, Paris, France.
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