1
|
Benova A, Ferencakova M, Bardova K, Funda J, Prochazka J, Spoutil F, Cajka T, Dzubanova M, Balcaen T, Kerckhofs G, Willekens W, van Lenthe GH, Charyyeva A, Alquicer G, Pecinova A, Mracek T, Horakova O, Coupeau R, Hansen MS, Rossmeisl M, Kopecky J, Tencerova M. Omega-3 PUFAs prevent bone impairment and bone marrow adiposity in mouse model of obesity. Commun Biol 2023; 6:1043. [PMID: 37833362 PMCID: PMC10575870 DOI: 10.1038/s42003-023-05407-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Obesity adversely affects bone and fat metabolism in mice and humans. Omega-3 polyunsaturated fatty acids (omega-3 PUFAs) have been shown to improve glucose metabolism and bone homeostasis in obesity. However, the impact of omega-3 PUFAs on bone marrow adipose tissue (BMAT) and bone marrow stromal cell (BMSC) metabolism has not been intensively studied yet. In the present study we demonstrated that omega-3 PUFA supplementation in high fat diet (HFD + F) improved bone parameters, mechanical properties along with decreased BMAT in obese mice when compared to the HFD group. Primary BMSCs isolated from HFD + F mice showed decreased adipocyte and higher osteoblast differentiation with lower senescent phenotype along with decreased osteoclast formation suggesting improved bone marrow microenvironment promoting bone formation in mice. Thus, our study highlights the beneficial effects of omega-3 PUFA-enriched diet on bone and cellular metabolism and its potential use in the treatment of metabolic bone diseases.
Collapse
Affiliation(s)
- Andrea Benova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
- Faculty of Science, Charles University, Prague, Czech Republic
| | - Michaela Ferencakova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Kristina Bardova
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiri Funda
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Prochazka
- Czech Centre for Phenogenomics & Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics & Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tomas Cajka
- Laboratory of Translational Metabolism, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martina Dzubanova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
- Faculty of Science, Charles University, Prague, Czech Republic
| | - Tim Balcaen
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Pole of Morphology, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
- Department of Chemistry, Molecular Design and Synthesis, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Pole of Morphology, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
- Department of Materials Engineering, KU Leuven, Leuven, Belgium
- Prometheus, Division of Skeletal Tissue Engineering, Katholieke Universiteit Leuven, Leuven, Belgium
| | | | | | - Arzuv Charyyeva
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Glenda Alquicer
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Alena Pecinova
- Laboratory of Bioenergetics, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tomas Mracek
- Laboratory of Bioenergetics, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Olga Horakova
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Roman Coupeau
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Morten Svarer Hansen
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense, C DK-5000, Denmark
| | - Martin Rossmeisl
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Kopecky
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Michaela Tencerova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic.
| |
Collapse
|
2
|
Rodrigues CT, Jacobs R, Ezeldeen M, Vasconcelos KDF, Lambrechts P, Tanomaru Filho M, Pinto JC, Duarte MAH. How does nano-focus computed tomography impact the quantification of debris within the root canal system? Braz Oral Res 2023; 37:e059. [PMID: 37341232 DOI: 10.1590/1807-3107bor-2023.vol37.0059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 01/05/2023] [Indexed: 06/22/2023] Open
Abstract
The aim of this study was to compare the quantification of hard-tissue debris by using micro-computed tomography (micro-CT) and nano-focus computed tomography (nano-CT) after root canal instrumentation. Ten mandibular molars containing an isthmus in the mesial root were scanned in a SkyScan 1172 micro-CT device with a voxel size of 12.8 µm and in a NanoTom nano-CT device with 5.5 µm. The mesial root canals were irrigated with 5 mL of saline solution at the orifice level, instrumented with Reciproc R25 files and a second scanning was performed by micro-CT and nano-CT devices for post-instrumentation images. DataViewer software was used for registering the pre- and post-operative micro-CT and nano-CT images. The root canal and the debris were segmented for quantitative analysis of the volume of the canal and volume of debris using CTAn software. Statistical analysis was performed using the T test for comparison between volume of the canal after instrumentation and volume of debris in both image modalities. The level of significance was set at p < 0.05. Nano-CT images showed higher values of debris when compared with micro-CT (p < 0.05) after root canal instrumentation. No difference was observed between the volume of the root canal after instrumentation in the two imaging methods used (p > 0.05). Nano-CT technology can be recommended as a more precise method for quantitative analysis of hard-tissue debris. Moreover, in Endodontic research it is a promising method, as it is capable of providing higher spatial and contrast resolution, faster scanning and higher image quality.
Collapse
Affiliation(s)
- Clarissa Teles Rodrigues
- Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru, SP, Brazil
| | - Reinhilde Jacobs
- University Hospitals Leuven, Faculty of Medicine, Department of Imaging and Pathology, Leuven, Belgium
| | - Mostafa Ezeldeen
- University Hospitals Leuven, Faculty of Medicine, Department of Imaging and Pathology, Leuven, Belgium
| | | | - Paul Lambrechts
- University Hospitals Leuven, KU Leuven and Dentistry, Department of Oral Health Sciences, Endodontology, Leuven, Belgium
| | - Mario Tanomaru Filho
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Restorative Dentistry, Araraquara, SP, Brazil
| | - Jader Camilo Pinto
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Restorative Dentistry, Araraquara, SP, Brazil
| | - Marco Antonio Hungaro Duarte
- Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru, SP, Brazil
| |
Collapse
|
3
|
Bottasso-Arias N, Burra K, Sinner D, Riede T. Disruption of BMP4 signaling is associated with laryngeal birth defects in a mouse model. Dev Biol 2023:S0012-1606(23)00068-4. [PMID: 37230380 DOI: 10.1016/j.ydbio.2023.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023]
Abstract
Laryngeal birth defects are considered rare, but they can be life-threatening conditions. The BMP4 gene plays an important role in organ development and tissue remodeling throughout life. Here we examined its role in laryngeal development complementing similar efforts for the lung, pharynx, and cranial base. Our goal was to determine how different imaging techniques contribute to a better understanding of the embryonic anatomy of the normal and diseased larynx in small specimens. Contrast-enhanced micro CT images of embryonic larynx tissue from a mouse model with Bmp4 deletion informed by histology and whole-mount immunofluorescence were used to reconstruct the laryngeal cartilaginous framework in three dimensions. Laryngeal defects included laryngeal cleft, laryngeal asymmetry, ankylosis and atresia. Results implicate BMP4 in laryngeal development and show that the 3D reconstruction of laryngeal elements provides a powerful approach to visualize laryngeal defects and thereby overcoming shortcomings of 2D histological sectioning and whole mount immunofluorescence.
Collapse
Affiliation(s)
- N Bottasso-Arias
- Neonatology and Pulmonary Biology, Perinatal Institute Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - K Burra
- Neonatology and Pulmonary Biology, Perinatal Institute Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - D Sinner
- Neonatology and Pulmonary Biology, Perinatal Institute Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; College of Medicine, University of Cincinnati, Cincinnati, OH, USA.
| | - T Riede
- Department of Physiology, Midwestern University, Glendale, AZ, USA.
| |
Collapse
|
4
|
Balcaen T, Piens C, Mwema A, Chourrout M, Vandebroek L, Des Rieux A, Chauveau F, De Borggraeve WM, Hoffmann D, Kerckhofs G. Revealing the three-dimensional murine brain microstructure by contrast-enhanced computed tomography. Front Neurosci 2023; 17:1141615. [PMID: 37034159 PMCID: PMC10076597 DOI: 10.3389/fnins.2023.1141615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/08/2023] [Indexed: 04/11/2023] Open
Abstract
To improve our understanding of the brain microstructure, high-resolution 3D imaging is used to complement classical 2D histological assessment techniques. X-ray computed tomography allows high-resolution 3D imaging, but requires methods for enhancing contrast of soft tissues. Applying contrast-enhancing staining agents (CESAs) ameliorates the X-ray attenuating properties of soft tissue constituents and is referred to as contrast-enhanced computed tomography (CECT). Despite the large number of chemical compounds that have successfully been applied as CESAs for imaging brain, they are often toxic for the researcher, destructive for the tissue and without proper characterization of affinity mechanisms. We evaluated two sets of chemically related CESAs (organic, iodinated: Hexabrix and CA4+ and inorganic polyoxometalates: 1:2 hafnium-substituted Wells-Dawson phosphotungstate and Preyssler anion), for CECT imaging of healthy murine hemispheres. We then selected the CESA (Hexabrix) that provided the highest contrast between gray and white matter and applied it to a cuprizone-induced demyelination model. Differences in the penetration rate, effect on tissue integrity and affinity for tissue constituents have been observed for the evaluated CESAs. Cuprizone-induced demyelination could be visualized and quantified after Hexabrix staining. Four new non-toxic and non-destructive CESAs to the field of brain CECT imaging were introduced. The added value of CECT was shown by successfully applying it to a cuprizone-induced demyelination model. This research will prove to be crucial for further development of CESAs for ex vivo brain CECT and 3D histopathology.
Collapse
Affiliation(s)
- Tim Balcaen
- MolDesignS, Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Leuven, Belgium
- ContrasT Team, Institute of Mechanics, Materials and Civil Engineering, Mechatronic, Electrical Energy and Dynamic Systems, UCLouvain, Louvain-la-Neuve, Belgium
- Pole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Catherine Piens
- ContrasT Team, Institute of Mechanics, Materials and Civil Engineering, Mechatronic, Electrical Energy and Dynamic Systems, UCLouvain, Louvain-la-Neuve, Belgium
| | - Ariane Mwema
- Advanced Drug Delivery and Biomaterials, UCLouvain, Brussels, Belgium
- Bioanalysis and Pharmacology of Bioactive Lipids, UCLouvain, Brussels, Belgium
| | - Matthieu Chourrout
- Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre de Recherche en Neurosciences de Lyon U1028 UMR 5292, Bron, France
| | - Laurens Vandebroek
- Laboratory of Biomolecular Modelling and Design (LBMD), Biochemistry, Molecular and Structural Biology, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Anne Des Rieux
- Advanced Drug Delivery and Biomaterials, UCLouvain, Brussels, Belgium
| | - Fabien Chauveau
- Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre de Recherche en Neurosciences de Lyon U1028 UMR 5292, Bron, France
| | - Wim M. De Borggraeve
- MolDesignS, Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Delia Hoffmann
- Pole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- ContrasT Team, Institute of Mechanics, Materials and Civil Engineering, Mechatronic, Electrical Energy and Dynamic Systems, UCLouvain, Louvain-la-Neuve, Belgium
- Pole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
- Department Materials Engineering, KU Leuven, Leuven, Belgium
- *Correspondence: Greet Kerckhofs,
| |
Collapse
|
5
|
One-stage versus two-stage piezocision-assisted orthodontic tooth movement: A preclinical study based on Nano-CT and RT-PCR analyses. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2022; 123:e663-e669. [PMID: 35276408 DOI: 10.1016/j.jormas.2022.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/23/2022] [Accepted: 03/07/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To evaluate the effect of a second-stage piezocision on the biological response. MATERIALS AND METHODS 60 rats were randomly allocated to 6 experimental groups of 10 rats. Rats undergoing a one-stage piezocision were sacrified on day 7, 28 and 42 (groups 1-3) while rats undergoing a two-satge piezocision were sacrified on day 42, 63 and 90 (groups 4-6), respectively. The biological response was investigated in 3D at the tissue level using Nano-computed tomography (Nano-CT) and, at the molecular level using the qRT-PCR technique. Bone Volume Fraction (BVF) loss was the primary endpoint. RESULTS Similar loss of BVF were observed both after the first and second piezocisions. The change in BVF loss between 7 and 28 days after each piezocision were 25.1 ± 13.0 (SE)% and 11.2 ± 11.6 (SE)% respectively and did not differ from each other (p = 0.43). Changes in BVF loss from 7 to 42 days were also comparable in one-stage and two-stage piezocision (4.9 ± 12.3 (SE) vs. -19.9 ± 13.4 (SE), p = 0.19). At the molecular level, all parameters except Translating Ribosome Affinity Purification (TRAP) protein had identical patterns. CONCLUSION Within the limits of the present study, a second piezocision allowed to re-induce the Regional Acceleratory Phenomenon (RAP) effect. Nevertheless, the relevance of the findings to the clinical effect has not been tested.
Collapse
|
6
|
Maes A, Pestiaux C, Marino A, Balcaen T, Leyssens L, Vangrunderbeeck S, Pyka G, De Borggraeve WM, Bertrand L, Beauloye C, Horman S, Wevers M, Kerckhofs G. Cryogenic contrast-enhanced microCT enables nondestructive 3D quantitative histopathology of soft biological tissues. Nat Commun 2022; 13:6207. [PMID: 36266273 PMCID: PMC9584947 DOI: 10.1038/s41467-022-34048-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 10/12/2022] [Indexed: 12/24/2022] Open
Abstract
Biological tissues comprise a spatially complex structure, composition and organization at the microscale, named the microstructure. Given the close structure-function relationships in tissues, structural characterization is essential to fully understand the functioning of healthy and pathological tissues, as well as the impact of possible treatments. Here, we present a nondestructive imaging approach to perform quantitative 3D histo(patho)logy of biological tissues, termed Cryogenic Contrast-Enhanced MicroCT (cryo-CECT). By combining sample staining, using an X-ray contrast-enhancing staining agent, with freezing the sample at the optimal freezing rate, cryo-CECT enables 3D visualization and structural analysis of individual tissue constituents, such as muscle and collagen fibers. We applied cryo-CECT on murine hearts subjected to pressure overload following transverse aortic constriction surgery. Cryo-CECT allowed to analyze, in an unprecedented manner, the orientation and diameter of the individual muscle fibers in the entire heart, as well as the 3D localization of fibrotic regions within the myocardial layers. We foresee further applications of cryo-CECT in the optimization of tissue/food preservation and donor banking, showing that cryo-CECT also has clinical and industrial potential.
Collapse
Affiliation(s)
- Arne Maes
- grid.5596.f0000 0001 0668 7884Department of Materials Engineering, KU Leuven, Heverlee, Belgium ,grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Camille Pestiaux
- grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Alice Marino
- grid.7942.80000 0001 2294 713XPole of Cardiovascular Research, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Tim Balcaen
- grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium ,grid.5596.f0000 0001 0668 7884Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Lisa Leyssens
- grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Sarah Vangrunderbeeck
- grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium ,grid.5596.f0000 0001 0668 7884Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Grzegorz Pyka
- grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Wim M. De Borggraeve
- grid.5596.f0000 0001 0668 7884Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Luc Bertrand
- grid.7942.80000 0001 2294 713XPole of Cardiovascular Research, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Christophe Beauloye
- grid.48769.340000 0004 0461 6320Division of Cardiology, University Hospital Saint-Luc, Brussels, Belgium
| | - Sandrine Horman
- grid.7942.80000 0001 2294 713XPole of Cardiovascular Research, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Martine Wevers
- grid.5596.f0000 0001 0668 7884Department of Materials Engineering, KU Leuven, Heverlee, Belgium
| | - Greet Kerckhofs
- grid.5596.f0000 0001 0668 7884Department of Materials Engineering, KU Leuven, Heverlee, Belgium ,grid.7942.80000 0001 2294 713XBiomechanics lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium ,grid.7942.80000 0001 2294 713XPole of Morphology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium ,grid.5596.f0000 0001 0668 7884Prometheus, Division for Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
| |
Collapse
|
7
|
Benova A, Ferencakova M, Bardova K, Funda J, Prochazka J, Spoutil F, Cajka T, Dzubanova M, Balcaen T, Kerckhofs G, Willekens W, van Lenthe GH, Alquicer G, Pecinova A, Mracek T, Horakova O, Rossmeisl M, Kopecky J, Tencerova M. Novel thiazolidinedione analog reduces a negative impact on bone and mesenchymal stem cell properties in obese mice compared to classical thiazolidinediones. Mol Metab 2022; 65:101598. [PMID: 36103974 PMCID: PMC9508355 DOI: 10.1016/j.molmet.2022.101598] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/06/2022] [Accepted: 09/06/2022] [Indexed: 11/29/2022] Open
Abstract
Objective The use of thiazolidinediones (TZDs) as insulin sensitizers has been shown to have side effects including increased accumulation of bone marrow adipocytes (BMAds) associated with a higher fracture risk and bone loss. A novel TZD analog MSDC-0602K with low affinity to PPARγ has been developed to reduce adverse effects of TZD therapy. However, the effect of MSDC-0602K on bone phenotype and bone marrow mesenchymal stem cells (BM-MSCs) in relation to obesity has not been intensively studied yet. Methods Here, we investigated whether 8-week treatment with MSDC-0602K has a less detrimental effect on bone loss and BM-MSC properties in obese mice in comparison to first generation of TZDs, pioglitazone. Bone parameters (bone microstructure, bone marrow adiposity, bone strength) were examined by μCT and 3-point bending test. Primary BM-MSCs were isolated and measured for osteoblast and adipocyte differentiation. Cellular senescence, bioenergetic profiling, nutrient consumption and insulin signaling were also determined. Results The findings demonstrate that MSDC-0602K improved bone parameters along with increased proportion of smaller BMAds in tibia of obese mice when compared to pioglitazone. Further, primary BM-MSCs isolated from treated mice and human BM-MSCs revealed decreased adipocyte and higher osteoblast differentiation accompanied with less inflammatory and senescent phenotype induced by MSDC-0602K vs. pioglitazone. These changes were further reflected by increased glycolytic activity differently affecting glutamine and glucose cellular metabolism in MSDC-0602K-treated cells compared to pioglitazone, associated with higher osteogenesis. Conclusion Our study provides novel insights into the action of MSDC-0602K in obese mice, characterized by the absence of detrimental effects on bone quality and BM-MSC metabolism when compared to classical TZDs and thus suggesting a potential therapeutical use of MSDC-0602K in both metabolic and bone diseases. MSDC-0602K improves bone quality and increases proportion of smaller BMAds in obese mice. MSDC-0602K-treated mice show lower adipogenic differentiation with less senescent phenotype in primary BM-MSCs. MSDC-0602K induces higher glycolytic activity in BM-MSCs compared to pioglitazone. MSDC-0602-treated BM-MSCs prefer glutamine over glucose uptake in comparison to AT-MSCs. Beneficial effect of MSDC-06002K in BM-MSCs manifests by absence of MPC inhibition.
Collapse
Affiliation(s)
- Andrea Benova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic; Faculty of Science, Charles University, Prague, Czech Republic
| | - Michaela Ferencakova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Kristina Bardova
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Jiri Funda
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Jan Prochazka
- Czech Centre for Phenogenomics & Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics & Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tomas Cajka
- Laboratory of Translational Metabolism, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Martina Dzubanova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic; Faculty of Science, Charles University, Prague, Czech Republic
| | - Tim Balcaen
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium; Pole of Morphology, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium; Department of Chemistry, Molecular Design and Synthesis, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium; Department of Materials Engineering, KU Leuven, Belgium; Prometheus, Division of Skeletal Tissue Engineering, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; Pole of Morphology, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | | | | | - Glenda Alquicer
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Alena Pecinova
- Laboratory of Bioenergetics, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tomas Mracek
- Laboratory of Bioenergetics, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Olga Horakova
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Martin Rossmeisl
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Jan Kopecky
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic
| | - Michaela Tencerova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague 142 20, Czech Republic.
| |
Collapse
|
8
|
Léger J, Leyssens L, Kerckhofs G, De Vleeschouwer C. Ensemble learning and test-time augmentation for the segmentation of mineralized cartilage versus bone in high-resolution microCT images. Comput Biol Med 2022; 148:105932. [DOI: 10.1016/j.compbiomed.2022.105932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/06/2022] [Accepted: 07/30/2022] [Indexed: 11/03/2022]
|
9
|
Marin C, Tuts J, Luyten FP, Vandamme K, Kerckhofs G. Impaired soft and hard callus formation during fracture healing in diet-induced obese mice as revealed by 3D contrast-enhanced computed tomography imaging. Bone 2021; 150:116008. [PMID: 33992820 DOI: 10.1016/j.bone.2021.116008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 11/21/2022]
Abstract
The impact of diabetes mellitus on bone fracture healing is clinically relevant as the patients experience delayed fracture healing. Even though efforts have been made to understand the detrimental effects of type 2 diabetes mellitus (T2DM) on the fracture healing process, the exact mechanisms causing the pathophysiological outcomes remain unclear. The aim of this study was to assess alterations in bone fracture healing (tibial fracture surgery, intramedullary pinning) of diet-induced obese (DIO) mice, and to investigate the in vitro properties of osteochondroprogenitors derived from the diabetic micro-environment. High-resolution contrast-enhanced microfocus X-ray computed tomography (CE-CT) enabled a simultaneous 3D assessment of the amount and spatial distribution of the regenerated soft and hard tissues during fracture healing and revealed that osteogenesis as well as chondrogenesis are altered in DIO mice. Compared to age-matched lean controls, DIO mice presented a decreased bone volume fraction and increased callus volume and adiposity at day 14 post-fracture. Of note, bone turnover was found altered in DIO mice relative to controls, evidenced by decreased blood serum osteocalcin and increased serum CTX levels. The in vitro data revealed that not only the osteogenic and adipogenic differentiation of periosteum-derived cells (PDCs) were altered by hyperglycemic (HG) conditions, but also the chondrogenic differentiation. Elevated PPARγ expression in HG conditions confirmed the observed increase in differentiated adipocytes in vitro. Finally, chondrogenesis-related genes COL2 and COL10 were downregulated for PDCs treated with HG medium, confirming that chondrogenic differentiation is compromised in vitro and suggesting that this may affect callus formation and maturation during the fracture healing process in vivo. Altogether, these results provide novel insights into the alterations of long bone fracture repair and suggest a link between HG-induced dysfunctionality of osteochondroprogenitor differentiation and fracture healing impairment under T2DM conditions.
Collapse
Affiliation(s)
- Carlos Marin
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium; Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium; Biomaterials - BIOMAT, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Jolien Tuts
- Biomaterials - BIOMAT, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Frank P Luyten
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium; Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium
| | - Katleen Vandamme
- Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium; Biomaterials - BIOMAT, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium; Department of Material Science and Engineering, KU Leuven, Leuven, Belgium; Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium; Institute for Experimental and Clinical Research, UCLouvain, Woluwe, Belgium.
| |
Collapse
|
10
|
Hall GN, Tam WL, Andrikopoulos KS, Casas-Fraile L, Voyiatzis GA, Geris L, Luyten FP, Papantoniou I. Patterned, organoid-based cartilaginous implants exhibit zone specific functionality forming osteochondral-like tissues in vivo. Biomaterials 2021; 273:120820. [PMID: 33872857 DOI: 10.1016/j.biomaterials.2021.120820] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 12/16/2022]
Abstract
Tissue engineered constructs have the potential to respond to the unmet medical need of treating deep osteochondral defects. However, current tissue engineering strategies struggle in the attempt to create patterned constructs with biologically distinct functionality. In this work, a developmentally-inspired modular approach is proposed, whereby distinct cartilaginous organoids are used as living building blocks. First, a hierarchical construct was created, composed of three layers of cartilaginous tissue intermediates derived from human periosteum-derived cells: (i) early (SOX9), (ii) mature (COL2) and (iii) (pre)hypertrophic (IHH, COLX) phenotype. Subcutaneous implantation in nude mice generated a hybrid tissue containing one mineralized and one non-mineralized part. However, the non-mineralized part was represented by a collagen type I positive fibrocartilage-like tissue. To engineer a more stable articular cartilage part, iPSC-derived cartilage microtissues (SOX9, COL2; IHH neg) were generated. Subcutaneous implantation of assembled iPSC-derived cartilage microtissues resulted in a homogenous cartilaginous tissue positive for collagen type II but negative for osteocalcin. Finally, iPSC-derived cartilage microtissues in combination with the pre-hypertrophic cartilage organoids (IHH, COLX) could form dual tissues consisting of i) a cartilaginous safranin O positive and ii) a bony osteocalcin positive region upon subcutaneous implantation, corresponding to the pre-engineered zonal pattern. The assembly of functional building blocks, as presented in this work, opens possibilities for the production of complex tissue engineered implants by embedding zone-specific functionality through the use of pre-programmed living building blocks.
Collapse
Affiliation(s)
- Gabriella Nilsson Hall
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium; Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
| | - Wai Long Tam
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
| | - Konstantinos S Andrikopoulos
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology-Hellas, Stadiou, 26504, Platani, Patras, Greece; Department of Physics, University of Patras, GR-265 00, Rio-Patras, Greece
| | - Leire Casas-Fraile
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, Leuven, 3000, Belgium
| | - George A Voyiatzis
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology-Hellas, Stadiou, 26504, Platani, Patras, Greece
| | - Liesbet Geris
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium; GIGA in Silico Medicine, Université de Liège, Avenue de L'Hôpital 11 - BAT 34, 4000, Liège 1, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C, PB 2419, 3001, Leuven, Belgium
| | - Frank P Luyten
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium; Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium.
| | - Ioannis Papantoniou
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium; Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium; Institute of Chemical Engineering Sciences, Foundation for Research and Technology-Hellas, Stadiou, 26504, Platani, Patras, Greece.
| |
Collapse
|
11
|
Busse M, Marciniszyn JP, Ferstl S, Kimm MA, Pfeiffer F, Gulder T. 3D-Non-destructive Imaging through Heavy-Metal Eosin Salt Contrast Agents. Chemistry 2021; 27:4561-4566. [PMID: 33300642 PMCID: PMC7986394 DOI: 10.1002/chem.202005203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Indexed: 12/21/2022]
Abstract
Conventional histology is a destructive technique based on the evaluation of 2D slices of a 3D biopsy. By using 3D X‐ray histology these obstacles can be overcome, but their application is still restricted due to the inherently low attenuation properties of soft tissue. In order to solve this problem, the tissue can be stained before X‐ray computed tomography imaging (CT) to enhance the soft tissue X‐ray contrast. Evaluation of brominated fluorescein salts revealed a mutual influence of the number of bromine atoms and the cations applied on the achieved contrast enhancement. The dibromo fluorescein barium salt turned out to be the ideal X‐ray contrast agent, allowing for 3D imaging and subsequent complementing counterstaining applying standard histological techniques.
Collapse
Affiliation(s)
- Madleen Busse
- Department of Physics and Munich School of BioEngineering, Technical University Munich, 85748, Garching, Germany
| | - Jaroslaw P Marciniszyn
- Department of Chemistry and Catalysis Research Center (CRC), Technical University Munich, 85748, Garching, Germany
| | - Simone Ferstl
- Department of Physics and Munich School of BioEngineering, Technical University Munich, 85748, Garching, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar, Technical University Munich, 81675, Munich, Germany
| | - Franz Pfeiffer
- Department of Physics and Munich School of BioEngineering, Technical University Munich, 85748, Garching, Germany.,Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar, Technical University Munich, 81675, Munich, Germany
| | - Tanja Gulder
- Department of Chemistry and Catalysis Research Center (CRC), Technical University Munich, 85748, Garching, Germany.,Institute of Organic Chemistry, Leipzig University, 04103, Leipzig, Germany
| |
Collapse
|
12
|
de Bournonville S, Geris L, Kerckhofs G. Micro computed tomography with and without contrast enhancement for the characterization of microcarriers in dry and wet state. Sci Rep 2021; 11:2819. [PMID: 33531524 PMCID: PMC7854591 DOI: 10.1038/s41598-021-81998-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 12/21/2020] [Indexed: 01/30/2023] Open
Abstract
In the field of regenerative medicine, microcarriers are used as support matrix for the growth of adherent cells. They are increasingly recognised as promising biomaterials for large scale, cost-effective cell expansion bioreactor processes. However, their individual morphologies can be highly heterogeneous which increases bioprocesses' variability. Additionally, only limited information is available on the microcarriers' 3D morphology and how it affects cell proliferation. Most imaging modalities do not provide sufficient 3D information or have a too limited field of view to appropriately study the 3D morphology. While microfocus X-ray computed tomography (microCT) could be appropriate, many microcarriers are hydrated before in-vitro use. This wet state makes them swell, changing considerably their morphology and making them indistinguishable from the culture solution in regular microCT images due to their physical density close to water. The use of contrast-enhanced microCT (CE-CT) has been recently reported for 3D imaging of soft materials. In this study, we selected a range of commercially available microcarrier types and used a combination of microCT and CE-CT for full 3D morphological characterization of large numbers of microcarriers, both in their dry and wet state. With in-house developed image processing and analysis tools, morphometrics of individual microcarriers were collected. Also, the morphology in wet state was assessed and related to accessible attachment surface area as a function of cell size. The morphological information on all microcarriers was collected in a publicly available database. This work provides a quantitative basis for optimization and modelling of microcarrier based cell expansion processes.
Collapse
Affiliation(s)
- Sébastien de Bournonville
- Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
- Biomechanics Research Unit, ULiège, Liège, Belgium
| | - Liesbet Geris
- Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
- Biomechanics Research Unit, ULiège, Liège, Belgium
| | - Greet Kerckhofs
- Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium.
- Biomechanics Lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium.
- Department Materials Engineering, KU Leuven, Leuven, Belgium.
- Institute of Experimental and Clinical Research, UCLouvain, Woluwé-Saint-Lambert, Belgium.
| |
Collapse
|
13
|
Rytky SJO, Tiulpin A, Frondelius T, Finnilä MAJ, Karhula SS, Leino J, Pritzker KPH, Valkealahti M, Lehenkari P, Joukainen A, Kröger H, Nieminen HJ, Saarakkala S. Automating three-dimensional osteoarthritis histopathological grading of human osteochondral tissue using machine learning on contrast-enhanced micro-computed tomography. Osteoarthritis Cartilage 2020; 28:1133-1144. [PMID: 32437969 DOI: 10.1016/j.joca.2020.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 04/16/2020] [Accepted: 05/01/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To develop and validate a machine learning (ML) approach for automatic three-dimensional (3D) histopathological grading of osteochondral samples imaged with contrast-enhanced micro-computed tomography (CEμCT). DESIGN A total of 79 osteochondral cores from 24 total knee arthroplasty patients and two asymptomatic donors were imaged using CEμCT with phosphotungstic acid -staining. Volumes-of-interest (VOI) in surface (SZ), deep (DZ) and calcified (CZ) zones were extracted depth-wise and subjected to dimensionally reduced Local Binary Pattern -textural feature analysis. Regularized linear and logistic regression (LR) models were trained zone-wise against the manually assessed semi-quantitative histopathological CEμCT grades (diameter = 2 mm samples). Models were validated using nested leave-one-out cross-validation and an independent test set (4 mm samples). The performance was primarily assessed using Mean Squared Error (MSE) and Average Precision (AP, confidence intervals are given in square brackets). RESULTS Highest performance on cross-validation was observed for SZ, both on linear regression (MSE = 0.49, 0.69 and 0.71 for SZ, DZ and CZ, respectively) and LR (AP = 0.9 [0.77-0.99], 0.46 [0.28-0.67] and 0.65 [0.41-0.85] for SZ, DZ and CZ, respectively). The test set evaluations yielded increased MSE on all zones. For LR, the performance was also best for the SZ (AP = 0.85 [0.73-0.93], 0.82 [0.70-0.92] and 0.8 [0.67-0.9], for SZ, DZ and CZ, respectively). CONCLUSION We present the first ML-based automatic 3D histopathological osteoarthritis (OA) grading method which also adequately perform on grading unseen data, especially in SZ. After further development, the method could potentially be applied by OA researchers since the grading software and all source codes are publicly available.
Collapse
Affiliation(s)
- S J O Rytky
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland.
| | - A Tiulpin
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland; Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland.
| | - T Frondelius
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland.
| | - M A J Finnilä
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland; Medical Research Center, University of Oulu, Oulu, Finland.
| | - S S Karhula
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland; Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland.
| | - J Leino
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland.
| | - K P H Pritzker
- Department of Laboratory Medicine and Pathobiology, Surgery University of Toronto, Toronto, Ontario, Canada; Mount Sinai Hospital, Toronto, Ontario, Canada.
| | - M Valkealahti
- Department of Surgery and Intensive Care, Oulu University Hospital, Oulu, Finland.
| | - P Lehenkari
- Medical Research Center, University of Oulu, Oulu, Finland; Department of Surgery and Intensive Care, Oulu University Hospital, Oulu, Finland; Cancer and Translational Medical Research Unit, Faculty of Medicine, University of Oulu, Oulu, Finland.
| | - A Joukainen
- Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland.
| | - H Kröger
- Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland.
| | - H J Nieminen
- Dept. of Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland; Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland.
| | - S Saarakkala
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland; Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland.
| |
Collapse
|
14
|
Lim N, Wen C, Vincent T. Molecular and structural imaging in surgically induced murine osteoarthritis. Osteoarthritis Cartilage 2020; 28:874-884. [PMID: 32305526 PMCID: PMC7327515 DOI: 10.1016/j.joca.2020.03.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 03/15/2020] [Accepted: 03/23/2020] [Indexed: 02/02/2023]
Abstract
Preclinical imaging in osteoarthritis is a rapidly growing area with three principal objectives: to provide rapid, sensitive tools to monitor the course of experimental OA longitudinally; to describe the temporal relationship between tissue-specific pathologies over the course of disease; and to use molecular probes to measure disease activity in vivo. Research in this area can be broadly divided into those techniques that monitor structural changes in tissues (microCT, microMRI, ultrasound) and those that detect molecular disease activity (positron emission tomography (PET), optical and optoacoustic imaging). The former techniques have largely evolved from experience in human joint imaging and have been refined for small animal use. Some of the latter tools, such as optical imaging, have been developed in preclinical models and may have translational benefit in the future for patient stratification and for monitoring disease progression and response to treatment. In this narrative review we describe these methodologies and discuss the benefits to animal research, understanding OA pathogenesis, and in the development of human biomarkers.
Collapse
Affiliation(s)
- N.H. Lim
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, UK,Address correspondence and reprint requests to: N.H. Lim, Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, UK.
| | - C. Wen
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
| | - T.L. Vincent
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, UK
| |
Collapse
|
15
|
de Bournonville S, Vangrunderbeeck S, Ly HGT, Geeroms C, De Borggraeve WM, Parac-Vogt TN, Kerckhofs G. Exploring polyoxometalates as non-destructive staining agents for contrast-enhanced microfocus computed tomography of biological tissues. Acta Biomater 2020; 105:253-262. [PMID: 31996331 DOI: 10.1016/j.actbio.2020.01.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/08/2020] [Accepted: 01/22/2020] [Indexed: 11/28/2022]
Abstract
To advance clinical translation of regenerative medicine, there is, amongst others, still need for better insights in tissue development and disease. For this purpose, more precise imaging of the 3D microstructure and spatial interrelationships of the different tissues within organs is crucial. Despite being destructive towards the sample, conventional histology still is the gold standard for structural analysis of biological tissues. It is, however, limited by 2D sections of a 3D object, prohibiting full 3D structural analysis. MicroCT has proven to provide full 3D structural information of mineralized tissues and dense biomaterials. However, the intrinsic low X-ray absorption of soft tissues requires contrast-enhancing staining agents (CESAs). In a previous study, we showed that hafnium-substituted Wells-Dawson polyoxometalate (Hf-WD POM) allows simultaneous contrast-enhanced microCT (CE-CT) visualization of bone and its marrow vascularization and adiposity. In this study, other POM species have been examined for their potential as soft tissue CESAs. Four Wells-Dawson POMs, differing in structure and overall charge, were used to stain murine long bones and kidneys. Their staining potential and diffusion rate were compared to those of Hf-WD POM and phosphotungstic acid (PTA), a frequently used but destructive CESA. Monolacunary Wells-Dawson POM (Mono-WD POM) showed similar soft tissue enhancement as Hf-WD POM and PTA. Moreover, Mono-WD POM is less destructive, shows a better diffusion than PTA, and its synthesis requires less time and cost than Hf-WD POM. Finally, the solubility of Mono-WD POM was improved by addition of lithium chloride (LiCl) to the staining solution, enhancing further the soft tissue contrast. STATEMENT OF SIGNIFICANCE: To advance clinical translation of regenerative medicine, there is, amongst others, still need for better insights in tissue development and disease. For this purpose, more precise imaging of the 3D microstructure and spatial interrelationships of the different tissues within organs is crucial. Current standard structural analysis techniques (e.g. 2D histomorphometry), however, do not allow full 3D assessment. Contrast-enhanced X-ray computed tomography has emerged as a powerful 3D structural characterization tool of soft biological tissues. In this study, from a library of Wells Dawson polyoxometalates (WD POMs), we identified monolacunary WD POM together with lithium chloride, dissolved in phosphate buffered saline, as the most suitable contrast-enhancing staining agent solution for different biological tissues without tissue shrinkage.
Collapse
Affiliation(s)
- Sébastien de Bournonville
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium; Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - Sarah Vangrunderbeeck
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium; Biomechanics Lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
| | - Hong Giang T Ly
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium; Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Carla Geeroms
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium; Skeletal Biology and Engineering Research Center, Department Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Wim M De Borggraeve
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium; Biomechanics Lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium; IREC, Institute of Experimental and Clinical Research, UCLouvain, Woluwé-Saint-Lambert, Belgium; Department Materials Engineering, KU Leuven, Leuven, Belgium.
| |
Collapse
|
16
|
Contrast-Enhanced MicroCT for Virtual 3D Anatomical Pathology of Biological Tissues: A Literature Review. CONTRAST MEDIA & MOLECULAR IMAGING 2019; 2019:8617406. [PMID: 30944550 PMCID: PMC6421764 DOI: 10.1155/2019/8617406] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 02/07/2019] [Indexed: 11/17/2022]
Abstract
To date, the combination of histological sectioning, staining, and microscopic assessment of the 2D sections is still the golden standard for structural and compositional analysis of biological tissues. X-ray microfocus computed tomography (microCT) is an emerging 3D imaging technique with high potential for 3D structural analysis of biological tissues with a complex and heterogeneous 3D structure, such as the trabecular bone. However, its use has been mostly limited to mineralized tissues because of the inherently low X-ray absorption of soft tissues. To achieve sufficient X-ray attenuation, chemical compounds containing high atomic number elements that bind to soft tissues have been recently adopted as contrast agents (CAs) for contrast-enhanced microCT (CE-CT); this novel technique is very promising for quantitative "virtual" 3D anatomical pathology of both mineralized and soft biological tissues. In this paper, we provided a review of the advances in CE-CT since the very first reports on the technology to date. Perfusion CAs for in vivo imaging have not been discussed, as the focus of this review was on CAs that bind to the tissue of interest and that are, thus, used for ex vivo imaging of biological tissues. As CE-CT has mostly been applied for the characterization of musculoskeletal tissues, we have put specific emphasis on these tissues. Advantages and limitations of multiple CAs for different musculoskeletal tissues have been highlighted, and their reproducibility has been discussed. Additionally, the advantages of the "full" 3D CE-CT information have been pinpointed, and its importance for more detailed structural, spatial, and functional characterization of the tissues of interest has been shown. Finally, the remaining challenges that are still hampering a broader adoption of CE-CT have been highlighted, and suggestions have been made to move the field of CE-CT imaging one step further towards a standard accepted tool for quantitative virtual 3D anatomical pathology.
Collapse
|
17
|
Kerckhofs G, Stegen S, van Gastel N, Sap A, Falgayrac G, Penel G, Durand M, Luyten FP, Geris L, Vandamme K, Parac-Vogt T, Carmeliet G. Simultaneous three-dimensional visualization of mineralized and soft skeletal tissues by a novel microCT contrast agent with polyoxometalate structure. Biomaterials 2018; 159:1-12. [DOI: 10.1016/j.biomaterials.2017.12.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 12/08/2017] [Accepted: 12/20/2017] [Indexed: 12/14/2022]
|
18
|
Kün-Darbois JD, Manero F, Rony L, Chappard D. Contrast enhancement with uranyl acetate allows quantitative analysis of the articular cartilage by microCT: Application to mandibular condyles in the BTX rat model of disuse. Micron 2017; 97:35-40. [DOI: 10.1016/j.micron.2017.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/15/2017] [Accepted: 03/15/2017] [Indexed: 01/29/2023]
|
19
|
Willett NJ, Thote T, Hart M, Moran S, Guldberg RE, Kamath RV. Quantitative pre-clinical screening of therapeutics for joint diseases using contrast enhanced micro-computed tomography. Osteoarthritis Cartilage 2016; 24:1604-12. [PMID: 27155345 DOI: 10.1016/j.joca.2016.04.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 03/30/2016] [Accepted: 04/27/2016] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The development of effective therapies for cartilage protection has been limited by a lack of efficient quantitative cartilage imaging modalities in pre-clinical in vivo models. Our objectives were two-fold: first, to validate a new contrast-enhanced 3D imaging analysis technique, equilibrium partitioning of an ionic contrast agent-micro computed tomography (EPIC-μCT), in a rat medial meniscal transection (MMT) osteoarthritis (OA) model; and second, to quantitatively assess the sensitivity of EPIC-μCT to detect the effects of matrix metalloproteinase inhibitor (MMPi) therapy on cartilage degeneration. METHODS Rats underwent MMT surgery and tissues were harvested at 1, 2, and 3 weeks post-surgery or rats received an MMPi or vehicle treatment and tissues harvested 3 weeks post-surgery. Parameters of disease progression were evaluated using histopathology and EPIC-μCT. Correlations and power analyses were performed to compare the techniques. RESULTS EPIC-μCT was shown to provide simultaneous 3D quantification of multiple parameters, including cartilage degeneration and osteophyte formation. In MMT animals treated with MMPi, OA progression was attenuated, as measured by 3D parameters such as lesion volume and osteophyte size. A post-hoc power analysis showed that 3D parameters for EPIC-μCT were more sensitive than 2D parameters requiring fewer animals to detect a therapeutic effect of MMPi. 2D parameters were comparable between EPIC-μCT and histopathology. CONCLUSION This study demonstrated that EPIC-μCT has high sensitivity to provide 3D structural and compositional measurements of cartilage and bone in the joint. EPIC-μCT can be used in combination with histology to provide a comprehensive analysis to screen new potential therapies.
Collapse
Affiliation(s)
- N J Willett
- George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - T Thote
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - M Hart
- AbbVie Bioresearch Center, Worcester, MA, USA.
| | - S Moran
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - R E Guldberg
- George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - R V Kamath
- AbbVie Bioresearch Center, Worcester, MA, USA.
| |
Collapse
|
20
|
Affiliation(s)
- Hany Mohamed Aly Ahmed
- Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| |
Collapse
|
21
|
Girard R, Zeineddine HA, Orsbon C, Tan H, Moore T, Hobson N, Shenkar R, Lightle R, Shi C, Fam MD, Cao Y, Shen L, Neander AI, Rorrer A, Gallione C, Tang AT, Kahn ML, Marchuk DA, Luo ZX, Awad IA. Micro-computed tomography in murine models of cerebral cavernous malformations as a paradigm for brain disease. J Neurosci Methods 2016; 271:14-24. [PMID: 27345427 DOI: 10.1016/j.jneumeth.2016.06.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Cerebral cavernous malformations (CCMs) are hemorrhagic brain lesions, where murine models allow major mechanistic discoveries, ushering genetic manipulations and preclinical assessment of therapies. Histology for lesion counting and morphometry is essential yet tedious and time consuming. We herein describe the application and validations of X-ray micro-computed tomography (micro-CT), a non-destructive technique allowing three-dimensional CCM lesion count and volumetric measurements, in transgenic murine brains. NEW METHOD We hereby describe a new contrast soaking technique not previously applied to murine models of CCM disease. Volumetric segmentation and image processing paradigm allowed for histologic correlations and quantitative validations not previously reported with the micro-CT technique in brain vascular disease. RESULTS Twenty-two hyper-dense areas on micro-CT images, identified as CCM lesions, were matched by histology. The inter-rater reliability analysis showed strong consistency in the CCM lesion identification and staging (K=0.89, p<0.0001) between the two techniques. Micro-CT revealed a 29% greater CCM lesion detection efficiency, and 80% improved time efficiency. COMPARISON WITH EXISTING METHOD Serial integrated lesional area by histology showed a strong positive correlation with micro-CT estimated volume (r(2)=0.84, p<0.0001). CONCLUSIONS Micro-CT allows high throughput assessment of lesion count and volume in pre-clinical murine models of CCM. This approach complements histology with improved accuracy and efficiency, and can be applied for lesion burden assessment in other brain diseases.
Collapse
Affiliation(s)
- Romuald Girard
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Hussein A Zeineddine
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Courtney Orsbon
- Department of Organismal Biology and Anatomy, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Huan Tan
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Thomas Moore
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Nick Hobson
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Robert Shenkar
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Rhonda Lightle
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Changbin Shi
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Maged D Fam
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Ying Cao
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Le Shen
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA; Department of Pathology, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - April I Neander
- Department of Organismal Biology and Anatomy, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Autumn Rorrer
- Molecular Genetics and Microbiology Department, Duke University Medical Center, Durham, NC, USA
| | - Carol Gallione
- Molecular Genetics and Microbiology Department, Duke University Medical Center, Durham, NC, USA
| | - Alan T Tang
- Department of Medicine and Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Mark L Kahn
- Department of Medicine and Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Douglas A Marchuk
- Molecular Genetics and Microbiology Department, Duke University Medical Center, Durham, NC, USA
| | - Zhe-Xi Luo
- Department of Organismal Biology and Anatomy, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - Issam A Awad
- Neurovascular Surgery Program, Section of Neurosurgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA.
| |
Collapse
|
22
|
Marenzana M, Vande Velde G. Refine, reduce, replace: Imaging of fibrosis and arthritis in animal models. Best Pract Res Clin Rheumatol 2015; 29:715-40. [DOI: 10.1016/j.berh.2016.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
23
|
Sonnaert M, Kerckhofs G, Papantoniou I, Van Vlierberghe S, Boterberg V, Dubruel P, Luyten FP, Schrooten J, Geris L. Multifactorial Optimization of Contrast-Enhanced Nanofocus Computed Tomography for Quantitative Analysis of Neo-Tissue Formation in Tissue Engineering Constructs. PLoS One 2015; 10:e0130227. [PMID: 26076131 PMCID: PMC4467978 DOI: 10.1371/journal.pone.0130227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 05/17/2015] [Indexed: 11/26/2022] Open
Abstract
To progress the fields of tissue engineering (TE) and regenerative medicine, development of quantitative methods for non-invasive three dimensional characterization of engineered constructs (i.e. cells/tissue combined with scaffolds) becomes essential. In this study, we have defined the most optimal staining conditions for contrast-enhanced nanofocus computed tomography for three dimensional visualization and quantitative analysis of in vitro engineered neo-tissue (i.e. extracellular matrix containing cells) in perfusion bioreactor-developed Ti6Al4V constructs. A fractional factorial ‘design of experiments’ approach was used to elucidate the influence of the staining time and concentration of two contrast agents (Hexabrix and phosphotungstic acid) and the neo-tissue volume on the image contrast and dataset quality. Additionally, the neo-tissue shrinkage that was induced by phosphotungstic acid staining was quantified to determine the operating window within which this contrast agent can be accurately applied. For Hexabrix the staining concentration was the main parameter influencing image contrast and dataset quality. Using phosphotungstic acid the staining concentration had a significant influence on the image contrast while both staining concentration and neo-tissue volume had an influence on the dataset quality. The use of high concentrations of phosphotungstic acid did however introduce significant shrinkage of the neo-tissue indicating that, despite sub-optimal image contrast, low concentrations of this staining agent should be used to enable quantitative analysis. To conclude, design of experiments allowed us to define the most optimal staining conditions for contrast-enhanced nanofocus computed tomography to be used as a routine screening tool of neo-tissue formation in Ti6Al4V constructs, transforming it into a robust three dimensional quality control methodology.
Collapse
Affiliation(s)
- Maarten Sonnaert
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Department of Materials Engineering, KU Leuven, Heverlee, Belgium
| | - Greet Kerckhofs
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
- Biomechanics Research Unit, Université de Liege, Liège, Belgium
- * E-mail:
| | - Ioannis Papantoniou
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
| | | | - Veerle Boterberg
- Polymer Chemistry and Biomaterials Group, University of Ghent, Ghent, Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials Group, University of Ghent, Ghent, Belgium
| | - Frank P. Luyten
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
| | - Jan Schrooten
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Department of Materials Engineering, KU Leuven, Heverlee, Belgium
| | - Liesbet Geris
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Biomechanics Research Unit, Université de Liege, Liège, Belgium
- Department of Mechanical Engineering, Biomechanics Section, KU Leuven, Heverlee, Belgium
| |
Collapse
|
24
|
Mavridou AM, Pyka G, Kerckhofs G, Wevers M, Bergmans L, Gunst V, Huybrechts B, Schepers E, Hauben E, Lambrechts P. A novel multimodular methodology to investigate external cervical tooth resorption. Int Endod J 2015; 49:287-300. [PMID: 25819599 DOI: 10.1111/iej.12450] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 03/23/2015] [Indexed: 01/29/2023]
Abstract
AIM To introduce a multimodular combination of techniques as a novel minimal invasive approach to investigate efficiently and accurately external cervical resorption (ECR). METHODOLOGY One case of a central incisor with extensive external cervical resorption was selected to demonstrate the potential of a comparative novel study methodology. ECR diagnosis was based on clinical inspection, digital radiography and cone-beam computed tomography (CBCT). After extraction, the tooth was investigated using microfocus computed tomography (micro-CT), nano-CT and hard tissue histology. These techniques were compared for their accuracy and applicability to highlight their advantages and disadvantages. RESULTS Nano-CT was more effective than micro-CT and CBCT for detailed ex vivo exploration of ECR. The reparative tissue, pericanalar resorption resistant sheet (PRRS), pulp tissue reactions, resorption channels and their interconnection with the periodontal ligament space were accurately visualized by detailed processing and analysis of the nano-CT data set with Dataviewer and CTAn software. Nano-CT analysis provided better insight in the true extent of the resorption, based on quantitative measurements and 3D visualization of the tooth structure. Nano-CT imaging results were similar to hard tissue histology at the mineralized tissue level. To clarify the dynamic phenomenon of reparative tissue formation and substitution of the resorbed tissues, nano-CT needed to be associated with hard tissue histology. CONCLUSION Nano-CT is a fast and minimal invasive technique for the ex vivo analysis and understanding of ECR and is complementary with hard tissue histology. A combined approach of clinical and CBCT examination, with nano-CT and histological mapping measurements, can provide an ideal platform for future ECR imaging and exploration studies.
Collapse
Affiliation(s)
- A M Mavridou
- Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium.,Private practice, Endo Rotterdam, Rotterdam, the Netherlands
| | - G Pyka
- Department of Materials Engineering (MTM), KU Leuven, Leuven, Belgium
| | - G Kerckhofs
- Department of Materials Engineering (MTM), KU Leuven, Leuven, Belgium.,Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, Leuven, Belgium
| | - M Wevers
- Department of Materials Engineering (MTM), KU Leuven, Leuven, Belgium
| | - L Bergmans
- Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium
| | - V Gunst
- Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium
| | - B Huybrechts
- Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium
| | - E Schepers
- Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium
| | - E Hauben
- Department of Imaging and Pathology, KU Leuven & University Hospital Leuven, Leuven, Belgium
| | - P Lambrechts
- Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium
| |
Collapse
|