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Haist V, Bellebeau-Barbier F, Montange C, Lemaitre L, Diawara A, Guiot AL, Nicolier A, Latronico E, Chereul E, Brunet S, Tronel JP. Comparison of the local safety of two multi-component feline vaccines, adjuvanted (1 mL) versus non-adjuvanted at reduced volume (0.5 mL), using computed tomography imaging. Vaccine 2023:S0264-410X(23)00720-X. [PMID: 37355451 DOI: 10.1016/j.vaccine.2023.06.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/07/2023] [Accepted: 06/12/2023] [Indexed: 06/26/2023]
Abstract
In 2020, a new 0.5 mL presentation of PUREVAX® RCP FeLV was registered and introduced in Europe. The objectives of this study were to investigate the local safety of this non-adjuvanted vaccine at reduced volume by classical methods (clinical examination, histopathology) and to evaluate the suitability of an alternative non-invasive methodology, the computed tomography (CT). For this purpose, the course of local reactions was assessed for 3 months after subcutaneous injection of PUREVAX® RCP FeLV 0.5 mL and compared to an adjuvanted vaccine, LEUCOFELIGEN® FeLV/RCP 1.0 mL. Injection site reactions consisted mainly of swelling reactions, which were more frequent, more pronounced and long-lasting in the adjuvanted vaccine group. Microscopically, in this group, moderate to severe inflammatory reactions were observed on day 7 (D7) and D21 post-injection and still present on D84, while mild inflammatory lesions were observed in the non-adjuvanted vaccine group only on D7 and D21. With the adjuvanted vaccine, inflamed areas were measurable by CT scan in all cats on D7 and D21, whereas they were detected only on D7 and only in 20 % of cats from the non-adjuvanted vaccine group. Besides the higher frequency, the mean inflamed volume was nearly 300 times larger in adjuvanted vaccine group on D7. Using different methodologies, the favorable safety profile of PUREVAX® RCP FeLV 0.5 mL was confirmed. Furthermore, the vaccine is aligned with current vaccination guidelines by inducing less inflammatory reactions, being adjuvant-free and injectable under a reduced volume, thus improving the convenience of administration in recommended sites (eg, legs). CT scan proved to be a suitable non-invasive method for the experimental follow-up of injection site reactions, yielding results consistent with clinical assessment and histopathology on D7 and D21. CT scan substantiated large differences between the investigated vaccines with a more prominent inflammatory reaction after injection of an adjuvanted vaccine.
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Affiliation(s)
- Verena Haist
- Boehringer Ingelheim Vetmedica GmbH, Binger Strasse 173, 55216 Ingelheim am Rhein, Germany.
| | - Fanny Bellebeau-Barbier
- Boehringer Ingelheim Animal Health France, Centre de Recherche de Saint-Vulbas, 805 Allée des Cyprès, 01150 Saint-Vulbas, France.
| | - Camille Montange
- Boehringer Ingelheim Animal Health France, Centre de Recherche de Saint-Vulbas, 805 Allée des Cyprès, 01150 Saint-Vulbas, France.
| | - Laurent Lemaitre
- Boehringer Ingelheim Animal Health France, Centre de Recherche de Saint-Vulbas, 805 Allée des Cyprès, 01150 Saint-Vulbas, France.
| | - Aissatou Diawara
- Boehringer Ingelheim Animal Health France, Centre de Recherche de Saint-Vulbas, 805 Allée des Cyprès, 01150 Saint-Vulbas, France.
| | - Anne-Laure Guiot
- CPB, 2 Place des Quatre Vierges, 69110 Sainte Foy les Lyon, France.
| | - Alexandra Nicolier
- Laboratoire VetDiagnostics, 3 Avenue de la Victoire, 69260 Charbonnières-les-Bains, France.
| | | | | | - Sylvie Brunet
- Boehringer Ingelheim Animal Health France, 29 Avenue Tony Garnier, 69007 Lyon, France.
| | - Jean-Philippe Tronel
- Boehringer Ingelheim Animal Health France, 29 Avenue Tony Garnier, 69007 Lyon, France.
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Tse Ve Koon K, Grenier D, Taborik F, Perrier AL, Mahieu-Williame L, Magnier L, Chuzel T, Contamin H, Chereul E, Beuf O. Comparison of high-resolution magnetic resonance imaging and micro-computed tomography arthrography for in-vivo assessment of cartilage in non-human primate models. Quant Imaging Med Surg 2021; 11:3431-3447. [PMID: 34341721 DOI: 10.21037/qims-20-116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 10/23/2020] [Indexed: 11/06/2022]
Abstract
Background Non-human primate (NHP) could be an interesting model for osteoarthritis (OA) longitudinal studies but standard medical imaging protocols are not able to acquire sufficiently high-resolution images to depict the thinner cartilage (compared to human) in an in vivo context. The aim of this study was thus to develop and validate the acquisition protocols for knee joint examination of NHP using magnetic resonance imaging (MRI) at 1.5 T and X-ray micro-computed tomography arthrography (µCTA). Methods The first phase of the study focused on developing dedicated in vivo HR-MRI and µCTA protocols for simultaneous acquisitions of both knee joints on NHP. For MR, a dedicated two-channel receiver array coil and acquisition sequence were developed on a 1.5 T Siemens Sonata system and tuned to respect safety issues and reasonable examination time. For µCTA, an experimental setup was devised so as to fulfill similar requirements. The two imaging protocols were used during a longitudinal study so as to confirm that repeated injections of loxaglic acid (contrast agent used for µCTA) didn't induce any bias in cartilage assessment and to compare segmentation results from the two modalities. Lateral and medial cartilage tibial plateaus were assessed using a common image processing protocol leading to a 3D estimation of the cartilage thickness. Results From HR-MRI and µCTA images, thickness distributions were extracted allowing for proper evaluation of knee cartilage thickness of the primates. Results obtained in vivo indicated that the µCTA protocol did not induce any bias in the measured cartilage parameters and moreover, segmentation results obtained from the two imaging modalities were consistent. Conclusions MR and µCTA are valuable imaging tools for the morphological evaluation of cartilage in NHP models which in turn can be used for OA studies.
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Affiliation(s)
- Kevin Tse Ve Koon
- Univ. Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, Lyon, France
| | - Denis Grenier
- Univ. Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, Lyon, France
| | | | - Anne-Laure Perrier
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LOCIE, Chambéry, France
| | - Laurent Mahieu-Williame
- Univ. Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, Lyon, France
| | | | | | | | | | - Olivier Beuf
- Univ. Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, Lyon, France
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Cuccione E, Chhour P, Si-Mohamed S, Dumot C, Kim J, Hubert V, Da Silva CC, Vandamme M, Chereul E, Balegamire J, Chevalier Y, Berthezène Y, Boussel L, Douek P, Cormode DP, Wiart M. Multicolor spectral photon counting CT monitors and quantifies therapeutic cells and their encapsulating scaffold in a model of brain damage. Nanotheranostics 2020; 4:129-141. [PMID: 32483519 PMCID: PMC7256015 DOI: 10.7150/ntno.45354] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/04/2020] [Indexed: 12/13/2022] Open
Abstract
Rationale & aim: Various types of cell therapies are currently under investigation for the treatment of ischemic stroke patients. To bridge the gap between cell administration and therapeutic outcome, there is a need for non-invasive monitoring of these innovative therapeutic approaches. Spectral photon counting computed tomography (SPCCT) is a new imaging modality that may be suitable for cell tracking. SPCCT is the next generation of clinical CT that allows the selective visualization and quantification of multiple contrast agents. The aims of this study are: (i) to demonstrate the feasibility of using SPCCT to longitudinally monitor and quantify therapeutic cells, i.e. bone marrow-derived M2-polarized macrophages transplanted in rats with brain damage; and (ii) to evaluate the potential of this approach to discriminate M2-polarized macrophages from their encapsulating scaffold. Methods: Twenty one rats received an intralesional transplantation of bone marrow-derived M2-polarized macrophages. In the first set of experiments, cells were labeled with gold nanoparticles and tracked for up to two weeks post-injection in a monocolor study via gold K-edge imaging. In the second set of experiments, the same protocol was repeated for a bicolor study, in which the labeled cells are embedded in iodine nanoparticle-labeled scaffold. The amount of gold in the brain was longitudinally quantified using gold K-edge images reconstructed from SPCCT acquisition. Animals were sacrificed at different time points post-injection, and ICP-OES was used to validate the accuracy of gold quantification from SPCCT imaging. Results: The feasibility of therapeutic cell tracking was successfully demonstrated in brain-damaged rats with SPCCT imaging. The imaging modality enabled cell monitoring for up to 2 weeks post-injection, in a specific and quantitative manner. Differentiation of labeled cells and their embedding scaffold was also feasible with SPCCT imaging, with a detection limit as low as 5,000 cells in a voxel of 250 × 250 × 250 µm in dimension in vivo. Conclusion: Multicolor SPCCT is an innovative translational imaging tool that allows monitoring and quantification of therapeutic cells and their encapsulating scaffold transplanted in the damaged rat brain.
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Affiliation(s)
- Elisa Cuccione
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
- VOXCAN, 1 avenue Bourgelat, 69280 Marcy l'Etoile, France
| | - Peter Chhour
- Department of Radiology, University of Pennsylvania, Pennsylvania, United States
| | - Salim Si-Mohamed
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - Chloé Dumot
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
| | - Johoon Kim
- Department of Radiology, University of Pennsylvania, Pennsylvania, United States
| | - Violaine Hubert
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
| | - Claire Crola Da Silva
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
| | - Marc Vandamme
- VOXCAN, 1 avenue Bourgelat, 69280 Marcy l'Etoile, France
| | | | - Joëlle Balegamire
- LAGEPP, University of Lyon 1, CNRS UMR 5007, 43 bd 11 Novembre, 69622 Villeurbanne, France
| | - Yves Chevalier
- LAGEPP, University of Lyon 1, CNRS UMR 5007, 43 bd 11 Novembre, 69622 Villeurbanne, France
| | - Yves Berthezène
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - Loïc Boussel
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - Philippe Douek
- CREATIS, CNRS UMR 5220 - INSERM U1206 - University of Lyon 1 - INSA Lyon, Lyon, France
- Hospices Civils de Lyon, Radiology Department, Lyon, France
| | - David P. Cormode
- Department of Radiology, University of Pennsylvania, Pennsylvania, United States
| | - Marlène Wiart
- CarMeN Laboratory, Institut National de la Santé et de la Recherche Médicale U1060, INRA U1397, Université Lyon 1, INSA Lyon, F-69600 Oullins, France
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Balegamire J, Vandamme M, Chereul E, Si-Mohamed S, Azzouz Maache S, Almouazen E, Ettouati L, Fessi H, Boussel L, Douek P, Chevalier Y. Iodinated polymer nanoparticles as contrast agent for spectral photon counting computed tomography. Biomater Sci 2020; 8:5715-5728. [DOI: 10.1039/d0bm01046d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Suspensions of iodinated polymer nanoparticles are evaluated as contrast agent for Computed Tomography (CT) and Spectral Photon Counting Computed Tomography (SPCCT).
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Affiliation(s)
| | | | | | - Salim Si-Mohamed
- University Lyon 1
- CREATIS
- CNRS UMR 5220
- INSERM U630
- 69621 Villeurbanne
| | - Samira Azzouz Maache
- University of Lyon 1
- ISPB
- Department of Parasitology and Medical Mycology
- 69008 Lyon
- France
| | - Eyad Almouazen
- University of Lyon 1
- LAGEPP
- CNRS UMR 5007
- 69622 Villeurbanne
- France
| | | | - Hatem Fessi
- University of Lyon 1
- LAGEPP
- CNRS UMR 5007
- 69622 Villeurbanne
- France
| | - Loïc Boussel
- University Lyon 1
- CREATIS
- CNRS UMR 5220
- INSERM U630
- 69621 Villeurbanne
| | - Philippe Douek
- University Lyon 1
- CREATIS
- CNRS UMR 5220
- INSERM U630
- 69621 Villeurbanne
| | - Yves Chevalier
- University of Lyon 1
- LAGEPP
- CNRS UMR 5007
- 69622 Villeurbanne
- France
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Halttunen N, Lerouge F, Chaput F, Vandamme M, Karpati S, Si-Mohamed S, Sigovan M, Boussel L, Chereul E, Douek P, Parola S. Hybrid Nano-GdF 3 contrast media allows pre-clinical in vivo element-specific K-edge imaging and quantification. Sci Rep 2019; 9:12090. [PMID: 31431689 PMCID: PMC6702219 DOI: 10.1038/s41598-019-48641-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 08/09/2019] [Indexed: 12/21/2022] Open
Abstract
Computed tomography (CT) is a widely used imaging modality. Among the recent technical improvements to increase the range of detection for optimized diagnostic, new devices such as dual energy CT allow elemental discrimination but still remain limited to two energies. Spectral photon-counting CT (SPCCT) is an emerging X-ray imaging technology with a completely new multiple energy detection and high spatial resolution (200 μm). This unique technique allows detection and quantification of a given element thanks to an element-specific increase in X-ray absorption for an energy (K-band) depending on its atomic number. The main contrast media used hitherto are iodine-based compounds but the K-edge of iodine (33.2 keV) is out of the range of detection. Therefore, it is crucial to develop contrast media suitable for this advanced technology. Gadolinium, well known and used element for MRI, possess a K-edge (50.2 keV) well suited for the SPCCT modality. The use of nano-objects instead of molecular entities is pushed by the necessity of high local concentration. In this work, nano-GdF3 is validated on a clinical based prototype, to be used as efficient in vivo contrast media. Beside an extremely high stability, it presents long lasting time in the blood pool allowing perfusion imaging of small animals, without apparent toxicity.
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Affiliation(s)
- Niki Halttunen
- Laboratoire de Chimie, Université de Lyon, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5182, 46 allée d'Italie, 69364, Lyon, France
| | - Frederic Lerouge
- Laboratoire de Chimie, Université de Lyon, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5182, 46 allée d'Italie, 69364, Lyon, France.
| | - Frederic Chaput
- Laboratoire de Chimie, Université de Lyon, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5182, 46 allée d'Italie, 69364, Lyon, France
| | - Marc Vandamme
- VOXCAN, 1 avenue Bourgelat, 69280, Marcy l'Etoile, France
| | - Szilvia Karpati
- Laboratoire de Chimie, Université de Lyon, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5182, 46 allée d'Italie, 69364, Lyon, France
| | - Salim Si-Mohamed
- CREATIS, CNRS UMR 5220, INSERM U1206, Université de Lyon, Lyon, France
- Radiology Department, Hospices Civils de Lyon, Lyon, France
| | - Monica Sigovan
- CREATIS, CNRS UMR 5220, INSERM U1206, Université de Lyon, Lyon, France
| | - Loic Boussel
- CREATIS, CNRS UMR 5220, INSERM U1206, Université de Lyon, Lyon, France
| | | | - Philippe Douek
- CREATIS, CNRS UMR 5220, INSERM U1206, Université de Lyon, Lyon, France
- Radiology Department, Hospices Civils de Lyon, Lyon, France
| | - Stephane Parola
- Laboratoire de Chimie, Université de Lyon, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5182, 46 allée d'Italie, 69364, Lyon, France.
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Oliveira PN, Montembault A, Sudre G, Alcouffe P, Marcon L, Gehan H, Lux F, Albespy K, Centis V, Campos D, Roques S, Meulle M, Renard M, Durand M, Denost Q, Bordenave L, Vandamme M, Chereul E, Vandesteene M, Boucard N, David L. Self-crosslinked fibrous collagen/chitosan blends: Processing, properties evaluation and monitoring of degradation by bi-fluorescence imaging. Int J Biol Macromol 2019; 131:353-367. [PMID: 30817967 DOI: 10.1016/j.ijbiomac.2019.02.134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 12/22/2022]
Abstract
Porous collagen/chitosan scaffolds with different Collagen:Chitosan (Coll:Ch) ratios were prepared by freeze-drying followed by self-crosslinking via dehydrothermal treatment (DHT) and characterized as biomaterials for tissue engineering. Cy7 and Cy5.5 fluorochromes were covalently grafted to collagen and chitosan, respectively. Thus, it was possible, using optical fluorescence imaging of the two fluorochromes, to simultaneously track their in vivo biodegradation, in a blend scaffold form. The fluorescence signal evolution, due to the bioresorption, corroborated with histological analysis. In vitro cytocompatibility of Coll:Ch blend scaffolds were evaluated with standardized tests. In addition, the scaffolds showed a highly interconnected porous structure. Extent of crosslinking was analyzed by convergent analysis using thermogravimetry, Fourier Transform Infrared Spectroscopy and PBS uptake. The variations observed with these techniques indicate strong interactions between collagen and chitosan (covalent and hydrogen bonds) promoted by the DHT. The mechanical properties were characterized to elucidate the impact of the different processing steps in the sample preparation (DHT, neutralization and sterilization by β-irradiation) and showed a robust processing scheme with low impact of Coll:Ch composition ratio.
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Affiliation(s)
- P N Oliveira
- IMP, CNRS UMR 5223, Univ Claude Bernard Lyon 1, Univ Lyon, 15 bd Latarjet, 69622 Villeurbanne, France.
| | - A Montembault
- IMP, CNRS UMR 5223, Univ Claude Bernard Lyon 1, Univ Lyon, 15 bd Latarjet, 69622 Villeurbanne, France
| | - G Sudre
- IMP, CNRS UMR 5223, Univ Claude Bernard Lyon 1, Univ Lyon, 15 bd Latarjet, 69622 Villeurbanne, France
| | - P Alcouffe
- IMP, CNRS UMR 5223, Univ Claude Bernard Lyon 1, Univ Lyon, 15 bd Latarjet, 69622 Villeurbanne, France
| | - L Marcon
- ILM, CNRS UMR 5306, Univ Claude Bernard Lyon 1, Univ Lyon, 43 bd du 11 Nov 1918, 69622 Villeurbanne, France
| | - H Gehan
- ILM, CNRS UMR 5306, Univ Claude Bernard Lyon 1, Univ Lyon, 43 bd du 11 Nov 1918, 69622 Villeurbanne, France
| | - F Lux
- ILM, CNRS UMR 5306, Univ Claude Bernard Lyon 1, Univ Lyon, 43 bd du 11 Nov 1918, 69622 Villeurbanne, France
| | - K Albespy
- Biom'up, 8, allée Irène Joliot Curie, 69800 Saint Priest, France
| | - V Centis
- Biom'up, 8, allée Irène Joliot Curie, 69800 Saint Priest, France
| | - D Campos
- Biom'up, 8, allée Irène Joliot Curie, 69800 Saint Priest, France
| | - S Roques
- CIC1401, CHU Bordeaux, Inserm, Univ Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France
| | - M Meulle
- CIC1401, CHU Bordeaux, Inserm, Univ Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France
| | - M Renard
- CIC1401, CHU Bordeaux, Inserm, Univ Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France
| | - M Durand
- CIC1401, CHU Bordeaux, Inserm, Univ Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France; BIOTIS Inserm U1026, Univ Bordeaux, Bioingénierie tissulaire, 146 rue Léo Saignat, Bordeaux 33000, France
| | - Q Denost
- CIC1401, CHU Bordeaux, Inserm, Univ Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France; BIOTIS Inserm U1026, Univ Bordeaux, Bioingénierie tissulaire, 146 rue Léo Saignat, Bordeaux 33000, France
| | - L Bordenave
- CIC1401, CHU Bordeaux, Inserm, Univ Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France; BIOTIS Inserm U1026, Univ Bordeaux, Bioingénierie tissulaire, 146 rue Léo Saignat, Bordeaux 33000, France
| | | | - E Chereul
- Voxcan, Marcy l'Etoile 69280, France
| | | | - N Boucard
- MDB Texinov, Saint-Didier-de-la Tour 38110, France
| | - L David
- IMP, CNRS UMR 5223, Univ Claude Bernard Lyon 1, Univ Lyon, 15 bd Latarjet, 69622 Villeurbanne, France
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7
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Briffaux JP, Pager A, Devaux C, Ravelo D, Chereul E, Lévy L, Baudet S. Toxicology of X-ray-exposed, hafnium oxide nanoparticles in the rat liver. Toxicol Lett 2012. [DOI: 10.1016/j.toxlet.2012.03.716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
MRI has become an effective tool for anatomical mice studies. Currently, embryologists study the development of mouse embryos in order to understand the mechanisms of human development. The aim of the research presented in this paper, is to develop a semi-automatic image segmentation framework based 3D deformable models to identify cardiac malformations which are a major cause of death in children. The segmentation systems have been used to segment 3D mouse embryos heart structures. Results on the ventricles and on the heart muscle are presented and compared with manually segmented models.
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Affiliation(s)
- T Zouagui
- University of Sciences and Technology of Oran (USTO), Electronics Department, Oran, Algeria.
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9
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Borg J, Chereul E. Differential MRI patterns of brain atrophy in double or single transgenic mice for APP and/or SOD. J Neurosci Res 2008; 86:3275-84. [DOI: 10.1002/jnr.21778] [Citation(s) in RCA: 30] [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: 11/05/2022]
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10
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Bolbos R, Benoit-Cattin H, Langlois JB, Chomel A, Chereul E, Odet C, Janier M, Pastoureau P, Beuf O. Measurement of knee cartilage thickness using MRI: a reproducibility study in a meniscectomized guinea pig model of osteoarthritis. NMR Biomed 2008; 21:366-75. [PMID: 17708519 DOI: 10.1002/nbm.1198] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The in vivo precision (reproducibility) of quantitative MRI is of particular importance in osteoarthritis (OA) progression of small magnitude and response to therapy. In this study, three-dimensional high-resolution MRI performed at 7 T was used to assess the short-term reproducibility of measurements of mean tibial cartilage thickness in a meniscectomized guinea pig model of OA. MR image acquisition was repeated five times in nine controls (SHAM) and 10 osteoarthritic animals 3 months after meniscectomy (MNX), in vivo. The animals were then killed for histomorphometric assessment and correlation with the MRI-based measurements. Medial tibial cartilage thickness was measured on MR images using semi-automatic dedicated 3D software developed in-house. The reproducibility of measurements of cartilage thickness was assessed by five repeated MRI examinations with a short recovery delay between examinations (48 h). The computed coefficients of variation were 8.9% for the SHAM group and 8.2% for the MNX group. The coefficients of variation were compatible with expected thickness variations between normal and pathological animals. A positive agreement and significant partial correlation (Spearman r' = 0.74; P < 0.01) between the MRI and histomorphometric data was established. Three-dimensional high-resolution MRI is a promising non-invasive research tool for in vivo follow-up. This modality could be used for staging and monitoring therapy response in small-animal models of OA.
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Affiliation(s)
- R Bolbos
- Plate-forme ANIMAGE, Université Claude Bernard Lyon I, Rhône-Alpes Genopole, Lyon, France
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11
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Almajdub M, Nejjari M, Poncet G, Magnier L, Chereul E, Roche C, Janier M. In-vivo high-resolution X-ray microtomography for liver and spleen tumor assessment in mice. Contrast Media Mol Imaging 2008; 2:88-93. [PMID: 17444558 DOI: 10.1002/cmmi.130] [Citation(s) in RCA: 26] [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] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The present study sought to validate the use of glycery1-2-oley-1,3-bis-[7-(3-amino-2,4,6-triiodophenyl)- heptanoate] (DHOG) contrast agent for mouse spleen tumor and liver metastasis imaging by high-resolution X-ray microtomography. Three groups of female nude mice were compared: controls (n = 5), and mice injected with 2.5 x 10(6) STC1 tumor cells in the spleen, imaged at 15 days (group G15, n = 5) and at 30 days (group G30, n = 5, of which one died before imaging). Micro-CT scans (X-ray voltage, 50 kVp; anode current, 200 microA; exposure time, 632 ms; 180 rotational steps resulting in 35 microm isotropic spatial resolution) were acquired at 0, 0.75, 2 and 4 h after i.v. injection of DHOG. CT number (Hounsfield units: HU) and contrast-to-noise ratios (CNR) were determined in three organs. Statistical analysis was performed by Mann-Whitney U-test. Contrast enhancement in normal spleen and liver increased, respectively to 1020 +/- 159 and 351 +/- 27 HU over baseline at 4 h, and 482 +/- 3 and 203 +/- 14 HU on day 6 after a single contrast injection. Automated three-dimensional reconstruction and modeling of the spleen provided accurate and quantifiable images. Spleen tumor and liver metastases did not take up DHOG, making them detectable in contrast to the increased signal in normal tissue. The smallest liver metastasis detected measured 0.3 mm in diameter. High-resolution X-ray micro-CT in living mice using DHOG contrast agent allowed visualization and volume quantification of normal spleen and of spleen tumor and its liver metastases.
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Affiliation(s)
- M Almajdub
- ANIMAGE, Rhône-Alpes GENOPOLE, Université de Lyon, Bât. CERMEP-59, Boulevard Pinel, 69677 Bron Cedex, France
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Boulocher C, Chereul E, Langlois JB, Armenean M, Duclos ME, Viguier E, Roger T, Vignon E. Non-invasive in vivo quantification of the medial tibial cartilage thickness progression in an osteoarthritis rabbit model with quantitative 3D high resolution micro-MRI. Osteoarthritis Cartilage 2007; 15:1378-87. [PMID: 17576081 DOI: 10.1016/j.joca.2007.04.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [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] [Received: 10/18/2006] [Accepted: 04/24/2007] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To develop a quantitative non-invasive in vivo three-dimensional (3D) high resolution (HR) micro-magnetic resonance imaging (microMRI) protocol to measure the medial tibial cartilage thickness (MT.ThC) in the normal rabbit and in the anterior cruciate ligament transection (ACLT) rabbit model of osteoarthritis and quantify the progression of MT.ThC. METHODS The left knee of 10 control and 40 operated rabbits was imaged in vivo with a 7T microMRI system at 3 and 5 months after ACLT. A 3D fast low angle short (FLASH) fat-suppressed MRI protocol was implemented leading to 44x176 microm(3) spatial resolution and to 44 microm(3) isotropic voxel after cubic interpolation. Semi-automatic MT.ThC measurements were made in 3D, in four different locations, in vivo and longitudinally in both groups. At 5 months, gross macroscopy, visual analogical evaluation of the cartilage and histology were compared to the MR-based MT.ThC. RESULTS At 3 and 5 months, the MT.ThC measured in the minimum interbone distance area was the thinnest MR-based MT.ThC. It was significantly lower in the operated group and among the four evaluated MT.ThC, it was the most discriminative between the normal and the operated groups (P<0.05). The MT.ThC measured in the minimum interbone distance area was also the most sensitive to change in the operated group (66.4% MT.ThC loss, P=0.003) while no significant changes were observed in the control group. CONCLUSION Quantitative 3D HR microMRI allowed for non-invasive longitudinal MT.ThC measurements in four different locations in both the normal and the operated rabbits. We concluded the MT.ThC measured in the minimum interbone distance area reflected the severity of the disease and was the most effective to measure the progression of the medial tibial cartilage destruction.
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Affiliation(s)
- C Boulocher
- Université de Lyon, UR RTI2B, Lyon F-69003, France.
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Bolbos R, Benoit-Cattin H, Langlois JB, Chomel A, Chereul E, Odet C, Pastoureau P, Janier M, Beuf O. Knee cartilage thickness measurements using MRI: a 4(1/2)-month longitudinal study in the meniscectomized guinea pig model of OA. Osteoarthritis Cartilage 2007; 15:656-65. [PMID: 17303445 DOI: 10.1016/j.joca.2006.12.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [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] [Received: 02/22/2006] [Accepted: 12/23/2006] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The aim of this study was to follow, over a 4(1/2)-month period, the medial tibia cartilage thickness on a meniscectomy (MNX) guinea pig osteoarthritis (OA) model and to compare with control animals, using three-dimensional high-resolution magnetic resonance imaging (3D HR-MRI). METHODS MRI experimentations were performed in vivo at 7 T on guinea pig knee joints. 3D HR-MR images were acquired in 60 controls (SHAM) and 45 osteoarthritic animals (MNX) at four time-points (15, 45, 90 and 135 days) after surgery. Medial tibial cartilage thickness was measured from MRI images using in-house dedicated 3D software followed by a statistical analysis. At each time-point 15 SHAM and 15 MNX animals were sacrificed for histomorphometric assessments. RESULTS No significant difference of mean cartilage thickness between the groups was found at early stage (D45) using MRI; however, significant differences were found between the groups at D90 (P<0.001) and D135 (P<0.001). Histomorphometry data confirmed the pathological status of the animals and was well correlated with MRI at D15 (r=0.79, P<0.01), D45 (r=0.67, P<0.01), and D135 (r=0.39, P<0.05) for SHAM, and at D45 (r=0.63, P<0.01), and D135 (r=0.81, P<0.01) for MNX. CONCLUSION Medial tibial cartilage measurement based on HR-MR images enables the monitoring of longitudinal cartilage thickness changes. This technique showed significant differences between SHAM and MNX as from D90 after surgery. It could be used as a noninvasive and reproducible tool to monitor therapeutic response in this OA model.
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Affiliation(s)
- R Bolbos
- Plate-forme ANIMAGE, Université Claude Bernard Lyon I, Rhône-Alpes Genopole, Lyon, France
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Almajdub M, Magnier L, Chereul E, Janier M. CMR 2005: 12.01: High-resolution x-ray microtomography of spleen in living mice. Contrast Media Mol Imaging 2006. [DOI: 10.1002/cmmi.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Nataf S, Anginot A, Vuaillat C, Malaval L, Fodil N, Chereul E, Langlois JB, Dumontel C, Cavillon G, Confavreux C, Mazzorana M, Vico L, Belin MF, Vivier E, Tomasello E, Jurdic P. Brain and bone damage in KARAP/DAP12 loss-of-function mice correlate with alterations in microglia and osteoclast lineages. Am J Pathol 2005; 166:275-86. [PMID: 15632019 PMCID: PMC1602283 DOI: 10.1016/s0002-9440(10)62251-1] [Citation(s) in RCA: 56] [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: 10/18/2022]
Abstract
Human polycystic lipomembraneous osteodysplasia with sclerosing leukoencephalopathy, also known as Nasu-Hakola disease, has been described to be associated with mutations affecting the immunoreceptor tyrosine-based activation motif-bearing KARAP/DAP12 immunoreceptor gene. Patients present bone fragilities and severe neurological alterations leading to presenile dementia. Here we investigated whether the absence of KARAP/DAP12-mediated signals in loss-of-function (KDelta75) mice also leads to bone and central nervous system pathological features. Histological analysis of adult KDelta75 mice brains revealed a diffuse hypomyelination predominating in anterior brain regions. As this was not accompanied by oligodendrocyte degeneration or microglial cell activation it suggests a developmental defect of myelin formation. Interestingly, in postnatal KDelta75 mice, we observed a dramatic reduction in microglial cell numbers similar to in vitro microglial cell differentiation impairment. Our results raise the intriguing possibility that defective microglial cell differentiation might be responsible for abnormal myelin development. Histomorphometry revealed that bone remodeling is also altered, because of a resorption defect, associated with a severe block of in vitro osteoclast differentiation. In addition, we show that, among monocytic lineages, KARAP/DAP12 specifically controls microglial and osteoclast differentiation. Our results confirm that KARAP/DAP12-mediated signals play an important role in the regulation of both brain and bone homeostasis. Yet, important differences exist between the symptoms observed in Nasu-Hakola patients and KDelta75 mice.
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