scholarly journals Nano-TiO2/PEEK bioactive composite as a bone substitute material: in vitro and in vivo studies

2012 ◽  
pp. 1215 ◽  
Author(s):  
Feng Deng ◽  
Wu ◽  
Xiaochen Liu ◽  
Guo ◽  
Wei
Keyword(s):  
Bone Substitute ◽  
In Vivo Studies ◽  
Nano Tio2 ◽  
Bone Substitute Material ◽  
Substitute Material

scholarly journals In Vitro and In Vivo Evaluation of Starfish Bone-Derived β-Tricalcium Phosphate as a Bone Substitute Material

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1881 ◽  
Author(s):  
Haruka Ishida ◽  
Hisao Haniu ◽  
Akari Takeuchi ◽  
Katsuya Ueda ◽  
Mahoko Sano ◽  
...  
Keyword(s):  
Tricalcium Phosphate ◽  
Bone Substitute ◽  
Fibrous Tissue ◽  
Bone Substitute Material ◽  
In Vivo Evaluation ◽  
Tissue Invasion ◽  
Substitute Material ◽  
Porous Calcium Carbonate

We evaluated starfish-derived β-tricalcium phosphate (Sf-TCP) obtained by phosphatization of starfish-bone-derived porous calcium carbonate as a potential bone substitute material. The Sf-TCP had a communicating pore structure with a pore size of approximately 10 μm. Although the porosity of Sf-TCP was similar to that of Cerasorb M (CM)—a commercially available β-TCP bone filler—the specific surface area was roughly three times larger than that of CM. Observation by scanning electron microscopy showed that pores communicated to the inside of the Sf-TCP. Cell growth tests showed that Sf-TCP improved cell proliferation compared with CM. Cells grown on Sf-TCP showed stretched filopodia and adhered; cells migrated both to the surface and into pores. In vivo, vigorous tissue invasion into pores was observed in Sf-TCP, and more fibrous tissue was observed for Sf-TCP than CM. Moreover, capillary formation into pores was observed for Sf-TCP. Thus, Sf-TCP showed excellent biocompatibility in vitro and more vigorous bone formation in vivo, indicating the possible applications of this material as a bone substitute. In addition, our findings suggested that mimicking the microstructure derived from whole organisms may facilitate the development of superior artificial bone.

scholarly journals In vivo and in vitro evaluation of flexible, cottonwool-like nanocomposites as bone substitute material for complex defects

2009 ◽  
Vol 5 (5) ◽  
pp. 1775-1784 ◽  
Author(s):  
Oliver D. Schneider ◽  
Franz Weber ◽  
Tobias J. Brunner ◽  
Stefan Loher ◽  
Martin Ehrbar ◽  
...  
Keyword(s):  
Bone Substitute ◽  
Bone Substitute Material ◽  
In Vitro Evaluation ◽  
Substitute Material

scholarly journals In Vivo Analysis of the Biocompatibility and Bone Healing Capacity of a Novel Bone Grafting Material Combined with Hyaluronic Acid

2021 ◽  
Vol 22 (9) ◽  
pp. 4818
Author(s):  
Annica Pröhl ◽  
Milijana Batinic ◽  
Said Alkildani ◽  
Michael Hahn ◽  
Milena Radenkovic ◽  
...  
Keyword(s):  
Bone Substitute ◽  
Sham Operation ◽  
Bone Substitute Material ◽  
Water Binding ◽  
Sham Operation Group ◽  
Operation Group ◽  
Substitute Material ◽  
Tissue Reactions ◽  
Inflammatory Tissue

The present in vivo study analyses both the inflammatory tissue reactions and the bone healing capacity of a newly developed bone substitute material (BSM) based on xenogeneic bone substitute granules combined with hyaluronate (HY) as a water-binding molecule. The results of the hyaluronate containing bone substitute material (BSM) were compared to a control xenogeneic BSM of the same chemical composition and a sham operation group up to 16 weeks post implantationem. A major focus of the study was to analyze the residual hyaluronate and its effects on the material-dependent healing behavior and the inflammatory tissue responses. The study included 63 male Wistar rats using the calvaria implantation model for 2, 8, and 16 weeks post implantationem. Established and Good Laboratory Practice (GLP)-conforming histological, histopathological, and histomorphometrical analysis methods were conducted. The results showed that the new hyaluronate containing BSM was gradually integrated within newly formed bone up to the end of the study that ended in a condition of complete bone defect healing. Thereby, no differences to the healing capacity of the control BSM were found. However, the bone formation in both groups was continuously significantly higher compared to the sham operation group. Additionally, no differences in the (inflammatory) tissue response that was analyzed via qualitative and (semi-) quantitative methods were found. Interestingly, no differences were found between the numbers of pro- and anti-inflammatory macrophages between the three study groups over the entire course of the study. No signs of the HY as a water-binding part of the BSM were histologically detectable at any of the study time points, altogether the results of the present study show that HY allows for an optimal material-associated bone tissue healing comparable to the control xenogeneic BSM. The added HY seems to be degraded within a very short time period of less than 2 weeks so that the remaining BSM granules allow for a gradual osteoconductive bone regeneration. Additionally, no differences between the inflammatory tissue reactions in both material groups and the sham operation group were found. Thus, the new hyaluronate containing xenogeneic BSM and also the control BSM have been shown to be fully biocompatible without any differences regarding bone regeneration.

scholarly journals Temporal response of an injectable calcium phosphate material in a critical size defect

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Jacob T. Landeck ◽  
William R. Walsh ◽  
Rema A. Oliver ◽  
Tian Wang ◽  
Mallory R. Gordon ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Minimally Invasive ◽  
Bone Substitute ◽  
Critical Size ◽  
Working Time ◽  
Histological Evaluation ◽  
Radiographic Evaluation ◽  
Bone Substitute Material ◽  
Substitute Material

Abstract Background Calcium phosphate-based bone graft substitutes are used to facilitate healing in bony defects caused by trauma or created during surgery. Here, we present an injectable calcium phosphate-based bone void filler that has been purposefully formulated with hyaluronic acid to offer a longer working time for ease of injection into bony defects that are difficult to access during minimally invasive surgery. Methods The bone substitute material deliverability and physical properties were characterized, and in vivo response was evaluated in a critical size distal femur defect in skeletally mature rabbits to 26 weeks. The interface with the host bone, implant degradation, and resorption were assessed with time. Results The calcium phosphate bone substitute material could be injected as a paste within the working time window of 7–18 min, and then self-cured at body temperature within 10 min. The material reached a maximum ultimate compressive strength of 8.20 ± 0.95 MPa, similar to trabecular bone. The material was found to be biocompatible and osteoconductive in vivo out to 26 weeks, with new bone formation and normal bone architecture observed at 6 weeks, as demonstrated by histological evaluation, microcomputed tomography, and radiographic evaluation. Conclusions These findings show that the material properties and performance are well suited for minimally invasive percutaneous delivery applications.

Gelatine modified monetite as a bone substitute material: An in vitro assessment of bone biocompatibility

2016 ◽  
Vol 32 ◽  
pp. 275-285 ◽  
Author(s):  
Benjamin Kruppke ◽  
Jana Farack ◽  
Alena-Svenja Wagner ◽  
Sarah Beckmann ◽  
Christiane Heinemann ◽  
...  
Keyword(s):  
Bone Substitute ◽  
Bone Substitute Material ◽  
In Vitro Assessment ◽  
Substitute Material

scholarly journals Combination of an allogenic and a xenogenic bone substitute material with injectable platelet-rich fibrin – A comparative in vitro study

2020 ◽  
Vol 35 (1) ◽  
pp. 83-96 ◽  
Author(s):  
Solomiya Kyyak ◽  
Sebastian Blatt ◽  
Andreas Pabst ◽  
Daniel Thiem ◽  
Bilal Al-Nawas ◽  
...  
Keyword(s):  
Bone Substitute ◽  
In Vitro Study ◽  
Vitro Study ◽  
Bone Morphogenetic Protein 2 ◽  
Bone Substitute Material ◽  
Platelet Rich Fibrin ◽  
Osteoblast Activity ◽  
Substitute Material ◽  
Xenogenic Bone

The aim of the in vitro study was a comparison of an allogenic (ABSM) and a xenogenic bone substitute material (XBSM) with and without injectable platelet-rich fibrin (ABSM-i-PRF & XBSM-i-PRF) on cell characteristics of human osteoblasts (HOB). Here, ABSM and XBSM (+ i-PRF = test; - i-PRF = control) were incubated with HOB for 3, 7 and 10 days. HOB viability, migration, proliferation and differentiation (RT-PCR on alkaline phosphatase (AP), bone morphogenetic protein 2 (BMP-2) and osteonectin (OCN)) were measured and compared between groups. At day 3, an increased viability, migration and proliferation was seen for ABSM-i-PRF. For viability and proliferation (days 7 and 10) and for migration (day 10), ABSM-i-PRF/XBSM-i-PRF showed higher values compared to ABSM/XBSM with maximum values for ABSM-i-PRF and minimum values for XBSM. At days 3 and 7, the highest expression of AP was detected in ABSM-i-PRF/XBSM-i-PRF when compared to ABSM/XBSM, whereas at day 10, AP expression levels were elevated in ABSM-i-PRF/ABSM. The highest BMP-2 expression was seen in ABSM-i-PRF whereas OCN expression showed higher levels in ABSM-i-PRF/XBSM-i-PRF at days 3 and 7 with lowest expression for ABSM. Later on, elevated OC levels were detected for ABSM-i-PRF only. In conclusion, i-PRF in combination with ABSM enhances HOB activity when compared to XBSM-i-PRF or untreated BSM in vitro. Therefore, addition of i-PRF to ABSM and – to a lower extent – to XBSM may influence osteoblast activity in vivo.

Combined study on the action and mechanism of G-Rg1/Sr-CaS bone substitute material for ossification and pro-vascularization

2020 ◽  
Vol 10 (2) ◽  
pp. 177-189
Author(s):  
Xue Li ◽  
Shi Hong ◽  
Caixia Tan ◽  
Bo Peng ◽  
Zhengjie Wu ◽  
...  
Keyword(s):  
Bone Substitute ◽  
Bone Repair ◽  
Umbilical Vein ◽  
Research Work ◽  
Calcium Sulphate ◽  
Control Group ◽  
Mouse Bone Marrow ◽  
Bone Substitute Material ◽  
Substitute Material

Neovascularization is important for bone repair, vascularization, and ossification during bone repair. Ginsenoside Rg1 (G-Rg1), which is the main extract of ginseng, has been shown to promote therapeutic angiogenesis. It has been studied in the field of biomaterials, but there is no relevant report in the field of bone substitute materials. In this study, we successfully prepared the bone substitute material combining calcium sulphate (Sr-CaS) with G-Rg1 on the basis of previous research work. In vitro experiments were carried out to verify the ossification of composites by using mouse bone marrow mesenchymal stem cells (BMMSCs) and the ossification was quantified by western blot. The related proteins in the key signaling pathways for the different concentrations of G-Rg1/Sr-CaS composite extract were studied to determine whether there was receptor competition and to find the optimal ratio parameters. The vascularization of the composite was verified in the human umbilical vein endothelial cells (HUVECs) model, and finally the coordination of pro-vascularization and ossification was evaluated in the mouse critical bone defect model. The results indicated that G-Rg1/Sr-CaS composites contributed to ossification in the mouse BMMSC model and vascularization in the HUVEC model. The G-Rg1/Sr-CaS composites resulted in significantly greater bone mineral densities and bone volume/total volume of the defect group compared to the control group. Histological analysis showed that the G-Rg1/SrCaS was resorbable with satisfactory biocompatibility. The doped strontium ions enhanced the bone repair performance of G-Rg1/Sr-CaS in the mouse model and the new substitute demonstrated promising results for clinical use.

In vivo comparison of a granular and putty form of a sintered and a non-sintered silica-enhanced hydroxyapatite bone substitute material

2019 ◽  
Vol 34 (6) ◽  
pp. 864-874 ◽  
Author(s):  
Michael Dau ◽  
Carnelia Ganz ◽  
Franziska Zaage ◽  
Henning Staedt ◽  
Elisabeth Goetze ◽  
...  
Keyword(s):  
Bone Substitute ◽  
Bone Substitute Material ◽  
Substitute Material

In vitro and in vivo studies on blends of isotactic and atactic poly (3-hydroxybutyrate) for development of a dura substitute material

Biomaterials ◽  
2006 ◽  
Vol 27 (2) ◽  
pp. 192-201 ◽  
Author(s):  
C KUNZE ◽  
H EDGARBERND ◽  
R ANDROSCH ◽  
C NISCHAN ◽  
T FREIER ◽  
...  
Keyword(s):  
In Vivo Studies ◽  
Substitute Material
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