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Bratengeier C, Johansson L, Liszka A, Bakker AD, Hallbeck M, Fahlgren A. Mechanical loading intensities affect the release of extracellular vesicles from mouse bone marrow-derived hematopoietic progenitor cells and change their osteoclast-modulating effect. FASEB J 2024; 38:e23323. [PMID: 38015031 DOI: 10.1096/fj.202301520r] [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: 08/04/2023] [Revised: 10/19/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023]
Abstract
Low-intensity loading maintains or increases bone mass, whereas lack of mechanical loading and high-intensity loading decreases bone mass, possibly via the release of extracellular vesicles by mechanosensitive bone cells. How different loading intensities alter the biological effect of these vesicles is not fully understood. Dynamic fluid shear stress at low intensity (0.7 ± 0.3 Pa, 5 Hz) or high intensity (2.9 ± 0.2 Pa, 1 Hz) was used on mouse hematopoietic progenitor cells for 2 min in the presence or absence of chemical compounds that inhibit release or biogenesis of extracellular vesicles. We used a Receptor activator of nuclear factor kappa-Β ligand-induced osteoclastogenesis assay to evaluate the biological effect of different fractions of extracellular vesicles obtained through centrifugation of medium from hematopoietic stem cells. Osteoclast formation was reduced by microvesicles (10 000× g) obtained after low-intensity loading and induced by exosomes (100 000× g) obtained after high-intensity loading. These osteoclast-modulating effects could be diminished or eliminated by depletion of extracellular vesicles from the conditioned medium, inhibition of general extracellular vesicle release, inhibition of microvesicle biogenesis (low intensity), inhibition of ESCRT-independent exosome biogenesis (high intensity), as well as by inhibition of dynamin-dependent vesicle uptake in osteoclast progenitor cells. Taken together, the intensity of mechanical loading affects the release of extracellular vesicles and change their osteoclast-modulating effect.
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Affiliation(s)
- C Bratengeier
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - L Johansson
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Clinical Pathology, Linköping University, Linköping, Sweden
| | - A Liszka
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - A D Bakker
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - M Hallbeck
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Clinical Pathology, Linköping University, Linköping, Sweden
| | - A Fahlgren
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
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Knowles NK, Langohr GDG, Athwal GS, Ferreira LM. Polyethylene glenoid component fixation geometry influences stability in total shoulder arthroplasty. Comput Methods Biomech Biomed Engin 2018; 22:271-279. [PMID: 30596527 DOI: 10.1080/10255842.2018.1551526] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Glenoid component stability is essential to ensure successful long-term survivability following total shoulder arthroplasty. As such, this computational study assessed the stability of five all-polyethylene glenoid components (Keel, Central-Finned 4-Peg, Peripheral 4-Peg, Cross-Keel, and Inverted-Y), using simulated joint loading in an osteoarthritic patient cohort. Stability was assessed on the basis of component micromotion in the tangential and normal directions. Maximum tangential micromotion occurred in the Cross-Keel (146 ± 46 µm), which was significantly greater (p < .001) than the other components. Maximum normal micromotion occurred in the Inverted-Y (109 ± 43 µm), which was significantly greater (p ≤ .002) than the other four components. In general, the Central-Finned 4-Peg exhibited the least normal and tangential micromotion, while the keeled components shown the highest normal and tangential micromotion. This study suggests that modifications to keeled designs do not improve component stability under the conditions tested, and pegged components show superior computational stability.
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Affiliation(s)
- Nikolas K Knowles
- a School of Biomedical Engineering , The University of Western Ontario , London , ON, Canada.,b Roth
- McFarlane Hand and Upper Limb Centre , London , ON, Canada.,c Collaborative Training Program in Musculoskeletal Health Research, and Bone and Joint Institute , The University of Western Ontario , London , ON, Canada
| | - G Daniel G Langohr
- a School of Biomedical Engineering , The University of Western Ontario , London , ON, Canada.,b Roth
- McFarlane Hand and Upper Limb Centre , London , ON, Canada.,c Collaborative Training Program in Musculoskeletal Health Research, and Bone and Joint Institute , The University of Western Ontario , London , ON, Canada.,d Department of Mechanical and Materials Engineering , The University of Western Ontario , London , ON, Canada
| | - George S Athwal
- b Roth
- McFarlane Hand and Upper Limb Centre , London , ON, Canada.,c Collaborative Training Program in Musculoskeletal Health Research, and Bone and Joint Institute , The University of Western Ontario , London , ON, Canada
| | - Louis M Ferreira
- a School of Biomedical Engineering , The University of Western Ontario , London , ON, Canada.,b Roth
- McFarlane Hand and Upper Limb Centre , London , ON, Canada.,c Collaborative Training Program in Musculoskeletal Health Research, and Bone and Joint Institute , The University of Western Ontario , London , ON, Canada.,d Department of Mechanical and Materials Engineering , The University of Western Ontario , London , ON, Canada
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Raddatz L, Kirsch M, Geier D, Schaeske J, Acreman K, Gentsch R, Jones S, Karau A, Washington T, Stiesch M, Becker T, Beutel S, Scheper T, Lavrentieva A. Comparison of different three dimensional-printed resorbable materials: In vitro biocompatibility, In vitro degradation rate, and cell differentiation support. J Biomater Appl 2018; 33:281-294. [PMID: 30004265 DOI: 10.1177/0885328218787219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biodegradable materials play a crucial role in both material and medical sciences and are frequently used as a primary commodity for implants generation. Due to their material inherent properties, they are supposed to be entirely resorbed by the patients' body after fulfilling their task as a scaffold. This makes a second intervention (e.g. for implant removal) redundant and significantly enhances a patient's post-operative life quality. At the moment, materials for resorbable and biodegradable implants (e.g. polylactic acid or poly-caprolactone polymers) are still intensively studied. They are able to provide mandatory demands such as mechanical strength and attributes needed for high-quality implants. Implants, however, not only need to be made of adequate material, but must also to be personalized in order to meet the customers' needs. Combining three dimensional-printing and high-resolution imaging technologies a new age of implant production comes into sight. Three dimensional images (e.g. magnetic resonance imaging or computed tomography) of tissue defects can be utilized as digital blueprints for personalized implants. Modern additive manufacturing devices are able to use a variety of materials to fabricate custom parts within short periods of time. The combination of high-quality resorbable materials and personalized three dimensional-printing for the custom application will provide the patients with the best suitable and sustainable implants. In this study, we evaluated and compared four resorbable and three dimensional printable materials for their in vitro biocompatibility, in vitro rate of degradation, cell adherence and behavior on these materials as well as support of osteogenic differentiation of human adipose tissue-derived mesenchymal stem cells. The tests were conducted with model constructs of 1 cm2 surface area fabricated with fused deposition modeling three dimensional-printing technology.
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Affiliation(s)
- Lukas Raddatz
- 1 Institute of Technical Chemistry, Gottfried Wilhelm Leibniz Universität Hannover, Germany.,2 Institute of Brewing and Beverage Technology, Forschungszentrum Weihenstephan, Technische Universität München, Germany
| | - Marline Kirsch
- 1 Institute of Technical Chemistry, Gottfried Wilhelm Leibniz Universität Hannover, Germany
| | - Dominik Geier
- 2 Institute of Brewing and Beverage Technology, Forschungszentrum Weihenstephan, Technische Universität München, Germany
| | - Jörn Schaeske
- 3 Department of Prosthetic Dentistry and Biomedical Materials, Medizinische Hochschule Hannover, Hannover, Germany
| | | | | | | | - Andreas Karau
- 5 Evonik Nutrition and Care GmbH, Darmstadt, Germany
| | | | - Meike Stiesch
- 3 Department of Prosthetic Dentistry and Biomedical Materials, Medizinische Hochschule Hannover, Hannover, Germany
| | - Thomas Becker
- 2 Institute of Brewing and Beverage Technology, Forschungszentrum Weihenstephan, Technische Universität München, Germany
| | - Sascha Beutel
- 1 Institute of Technical Chemistry, Gottfried Wilhelm Leibniz Universität Hannover, Germany
| | - Thomas Scheper
- 1 Institute of Technical Chemistry, Gottfried Wilhelm Leibniz Universität Hannover, Germany
| | - Antonina Lavrentieva
- 1 Institute of Technical Chemistry, Gottfried Wilhelm Leibniz Universität Hannover, Germany
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Ziebart J, Fan S, Schulze C, Kämmerer PW, Bader R, Jonitz-Heincke A. Effects of interfacial micromotions on vitality and differentiation of human osteoblasts. Bone Joint Res 2018; 7:187-195. [PMID: 29682285 PMCID: PMC5895940 DOI: 10.1302/2046-3758.72.bjr-2017-0228.r1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Objectives Enhanced micromotions between the implant and surrounding bone can impair osseointegration, resulting in fibrous encapsulation and aseptic loosening of the implant. Since the effect of micromotions on human bone cells is sparsely investigated, an in vitro system, which allows application of micromotions on bone cells and subsequent investigation of bone cell activity, was developed. Methods Micromotions ranging from 25 µm to 100 µm were applied as sine or triangle signal with 1 Hz frequency to human osteoblasts seeded on collagen scaffolds. Micromotions were applied for six hours per day over three days. During the micromotions, a static pressure of 527 Pa was exerted on the cells by Ti6Al4V cylinders. Osteoblasts loaded with Ti6Al4V cylinders and unloaded osteoblasts without micromotions served as controls. Subsequently, cell viability, expression of the osteogenic markers collagen type I, alkaline phosphatase, and osteocalcin, as well as gene expression of osteoprotegerin, receptor activator of NF-κB ligand, matrix metalloproteinase-1, and tissue inhibitor of metalloproteinase-1, were investigated. Results Live and dead cell numbers were higher after 25 µm sine and 50 µm triangle micromotions compared with loaded controls. Collagen type I synthesis was downregulated in respective samples. The metabolic activity and osteocalcin expression level were higher in samples treated with 25 µm micromotions compared with the loaded controls. Furthermore, static loading and micromotions decreased the osteoprotegerin/receptor activator of NF-κB ligand ratio. Conclusion Our system enables investigation of the behaviour of bone cells at the bone-implant interface under shear stress induced by micromotions. We could demonstrate that micromotions applied under static pressure conditions have a significant impact on the activity of osteoblasts seeded on collagen scaffolds. In future studies, higher mechanical stress will be applied and different implant surface structures will be considered. Cite this article: J. Ziebart, S. Fan, C. Schulze, P. W. Kämmerer, R. Bader, A. Jonitz-Heincke. Effects of interfacial micromotions on vitality and differentiation of human osteoblasts. Bone Joint Res 2018;7:187–195. DOI: 10.1302/2046-3758.72.BJR-2017-0228.R1.
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Affiliation(s)
- J Ziebart
- Department of Orthopaedics, Rostock University Medical Center, Rostock 18057, Germany
| | - S Fan
- Department of Orthopaedics, Rostock University Medical Center, Rostock 18057, Germany
| | - C Schulze
- Department of Orthopaedics, Rostock University Medical Center, Rostock 18057, Germany
| | - P W Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, Rostock University Medical Center, Rostock 18057, Germany
| | - R Bader
- Department of Orthopaedics, Rostock University Medical Center, Rostock 18057, Germany
| | - A Jonitz-Heincke
- Department of Orthopaedics, Rostock University Medical Center, Rostock 18057, Germany
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