1
|
de Oliveira JCS, Baggio AMP, Benetti LP, Delamura IF, Ramos EU, Bizelli VF, Bassi APF. Application of Tissue Engineering in Manufacturing Absorbable Membranes to Improve the Osteopromoting Potential of Collagen. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 10:bioengineering10010015. [PMID: 36671587 PMCID: PMC9855111 DOI: 10.3390/bioengineering10010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022]
Abstract
The membranes are an important biomaterial that contribute to osteopromotion. This study aimed to evaluate the osteopromotive potential of collagen membranes associated with Hydroxyapatite (HA) in critical size calvaria rat's defects. Ninety-six Albinus Wistar rats were divided into four groups: (CG) negative control: clot only (CG); positive control: porcine collagen membrane (BG); fish collagen membrane associated with HA (CP); bovine collagen membrane associated with HA (CB), analyzed at 7, 15, 30, and 60 postoperative days. At 30 days, membrane integrity was observed in the CB and fragments in the CP and BG groups were dispersed in the center of the defect. At 60 days, BG demonstrated better results with no statistical difference for the CP group (p = 0.199) and a statistically significant difference for the CB group (p = 0.013). The inflammatory profiles of the BG and CP groups were similar. Immunohistochemistry demonstrated at 60 days moderate osteopontin staining for the BG and CP groups, light staining for the CB, and intense osteocalcin staining for the BG, while the CB and CP groups demonstrated moderate staining. Microtomography revealed the highest mean bone volume (14.247 mm3) in the BG, followed by the CB (11.850 mm3), and CP (9.560 mm3) group. The collagen membranes associated with HA demonstrated an osteopromotive potential.
Collapse
|
2
|
Sartoretto SC, Gens NDF, de Brito Resende RF, Alves ATNN, Cecato RC, Uzeda MJ, Granjeiro JM, Calasans-Maia MD, Calasans-Maia JA. In Vivo Evaluation of Permeable and Impermeable Membranes for Guided Bone Regeneration. MEMBRANES 2022; 12:membranes12070711. [PMID: 35877914 PMCID: PMC9324035 DOI: 10.3390/membranes12070711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 02/05/2023]
Abstract
Background: The degree of biodegradation and the inflammatory response of membranes employed for guided bone regeneration directly impact the outcome of this technique. This study aimed to evaluate four different experimental versions of Poly (L-lactate-co-Trimethylene Carbonate) (PTMC) + Poly (L-lactate-co-glycolate) (PLGA) membranes, implanted in mouse subcutaneous tissue, compared to a commercially available membrane and a Sham group. Methods: Sixty Balb-C mice were randomly divided into six experimental groups and subdivided into 1, 3, 6 and 12 weeks (n = 5 groups/period). The membranes (1 cm2) were implanted in the subcutaneous back tissue of the animals. The samples were obtained for descriptive and semiquantitative histological evaluation (ISO 10993-6). Results: G1 and G4 allowed tissue adhesion and the permeation of inflammatory cells over time and showed greater phagocytic activity and permeability. G2 and G3 detached from the tissue in one and three weeks; however, in the more extended periods, they presented a rectilinear and homogeneous aspect and were not absorbed. G2 had a major inflammatory reaction. G5 was almost completely absorbed after 12 weeks. Conclusions: The membranes are considered biocompatible. G5 showed a higher degree of biosorption, followed by G1 and G4. G2 and G3 are considered non-absorbable in the studied periods.
Collapse
Affiliation(s)
- Suelen Cristina Sartoretto
- Oral Surgery Department, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (S.C.S.); (R.F.d.B.R.); (M.J.U.)
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
| | - Natalia de Freitas Gens
- Graduate Program, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil;
| | - Rodrigo Figueiredo de Brito Resende
- Oral Surgery Department, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (S.C.S.); (R.F.d.B.R.); (M.J.U.)
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
- Oral Surgery Department, Dentistry School, Iguaçu University, Nova Iguaçu 26275-580, Rio de Janeiro, Brazil
| | - Adriana Terezinha Neves Novellino Alves
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
- Oral Diagnosis Department, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil
| | - Rafael Cury Cecato
- Implant Dentistry Center for Education and Research on Dental Implants (CEPID), Department of Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis 88000-000, Santa Catarina, Brazil;
| | - Marcelo José Uzeda
- Oral Surgery Department, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (S.C.S.); (R.F.d.B.R.); (M.J.U.)
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
- Oral Surgery Department, Dentistry School, Iguaçu University, Nova Iguaçu 26275-580, Rio de Janeiro, Brazil
| | - Jose Mauro Granjeiro
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
- National Institute of Metrology, Quality and Technology (INMETRO), Duque de Caxias 25000-000, Rio de Janeiro, Brazil
| | - Monica Diuana Calasans-Maia
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
| | - Jose Albuquerque Calasans-Maia
- Laboratory for Clinical Research in Dentistry, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil; (A.T.N.N.A.); (J.M.G.); (M.D.C.-M.)
- Orthodontic Department, Dentistry School, Fluminense Federal University, Niteroi 24020-140, Rio de Janeiro, Brazil
- Correspondence: ; Tel.: +55-21-981535874
| |
Collapse
|
3
|
Cheng C, Chaaban M, Born G, Martin I, Li Q, Schaefer DJ, Jaquiery C, Scherberich A. Repair of a Rat Mandibular Bone Defect by Hypertrophic Cartilage Grafts Engineered From Human Fractionated Adipose Tissue. Front Bioeng Biotechnol 2022; 10:841690. [PMID: 35350180 PMCID: PMC8957819 DOI: 10.3389/fbioe.2022.841690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/14/2022] [Indexed: 01/25/2023] Open
Abstract
Background: Devitalized bone matrix (DBM) is currently the gold standard alternative to autologous bone grafting in maxillofacial surgery. However, it fully relies on its osteoconductive properties and therefore requires defects with healthy bone surrounding. Fractionated human adipose tissue, when differentiated into hypertrophic cartilage in vitro, was proven reproducibly osteogenic in vivo, by recapitulating endochondral ossification (ECO). Both types of bone substitutes were thus compared in an orthotopic, preclinical mandibular defect model in rat. Methods: Human adipose tissue samples were collected and cultured in vitro to generate disks of hypertrophic cartilage. After hypertrophic induction, eight samples from two donors were implanted into a mandible defect in rats, in parallel to Bio-Oss® DBM granules. After 12 weeks, the mandible samples were harvested and evaluated by Micro-CT and histology. Results: Micro-CT demonstrated reproducible ECO and complete restoration of the mandibular geometry with adipose-based disks, with continuous bone inside and around the defect, part of which was of human (donor) origin. In the Bio-Oss® group, instead, osteoconduction from the border of the defect was observed but no direct connection of the granules with the surrounding bone was evidenced. Adipose-based grafts generated significantly higher mineralized tissue volume (0.57 ± 0.10 vs. 0.38 ± 0.07, n = 4, p = 0.03) and newly formed bone (18.9 ± 3.4% of surface area with bone tissue vs. 3 ± 0.7%, p < 0.01) than Bio-Oss®. Conclusion: Our results provide a proof-of-concept that adipose-based hypertrophic cartilage grafts outperform clinical standard biomaterials in maxillofacial surgery.
Collapse
Affiliation(s)
- Chen Cheng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Plastic, Reconstructive, Aesthetic, and Hand Surgery, University Hospital Basel, Basel, Switzerland
| | - Mansoor Chaaban
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Gordian Born
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Ivan Martin
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Qingfeng Li, ; Arnaud Scherberich,
| | - Dirk J. Schaefer
- Department of Plastic, Reconstructive, Aesthetic, and Hand Surgery, University Hospital Basel, Basel, Switzerland
| | - Claude Jaquiery
- Clinic for Craniomaxillofacial and Oral Surgery, University Hospital Basel, Basel, Switzerland
| | - Arnaud Scherberich
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Plastic, Reconstructive, Aesthetic, and Hand Surgery, University Hospital Basel, Basel, Switzerland
- *Correspondence: Qingfeng Li, ; Arnaud Scherberich,
| |
Collapse
|
4
|
Cucchi A, Vignudelli E, Franceschi D, Randellini E, Lizio G, Fiorino A, Corinaldesi G. Vertical and horizontal ridge augmentation using customized CAD/CAM titanium mesh with versus without resorbable membranes. A randomized clinical trial. Clin Oral Implants Res 2021; 32:1411-1424. [PMID: 34551168 PMCID: PMC9293224 DOI: 10.1111/clr.13841] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 01/03/2023]
Abstract
Objectives The aim was to evaluate the role of resorbable membranes applied over customized titanium meshes related to soft tissue healing and bone regeneration after vertical/horizontal bone augmentation. Materials and Methods Thirty patients with partial edentulism of the maxilla/mandible, with vertical/horizontal reabsorption of the alveolar bone, and needing implant‐supported restorations, were randomly divided into two groups: Group A was treated using only custom‐made meshes (Mesh‐) and Group B using custom‐made meshes with cross‐linked collagen membranes (Mesh+). Data collection included surgical/technical and healing complications, “pseudo‐periosteum” thickness, bone density, planned bone volume (PBV), regenerated bone volume (RBV), regeneration rate (RR), vertical bone gain (VBG), and implant survival in regenerated areas. Statistical analysis was performed between the two study groups using a significance level of α = .05. Results Regarding the healing complications, the noninferiority analysis proved to be inconclusive, despite the better results of group Mesh+ (13%) compared to group Mesh‐ (33%): estimated value −1.13 CI‐95% from −0.44 to 0.17. Superiority approach confirmed the absence of significant differences (p = .39). RBV was 803.27 mm3 and 843.13 mm3, respectively, and higher RR was observed in group Mesh+ (82.3%) compared to Mesh‐ (74.3%), although this value did not reach a statistical significance (p = .44). All 30 patients completed the study, receiving 71 implants; 68 out of them were clinically stable and in function. Conclusion The results showed that customized meshes alone do not appear to be inferior to customized meshes covered by cross‐linked collagen membranes in terms of healing complication rates and regeneration rates, although superior results were observed in group Mesh+compared to group Mesh‐ for all variables.
Collapse
Affiliation(s)
| | - Elisabetta Vignudelli
- Department of Biomedical and Neuromotor Science (DIBINEM), University of Bologna, Bologna, Italy
| | - Debora Franceschi
- Department of Experimental and clinical Medicine, University of Florence, Florence, Italy
| | | | - Giuseppe Lizio
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Trans-plant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Antonino Fiorino
- Catholic University of Sacred Heart, University Polyclinic Foundation A. Gemelli (IRCCS), Rome, Italy
| | - Giuseppe Corinaldesi
- Department of Biomedical and Neuromotor Science (DIBINEM), University of Bologna, Bologna, Italy
| |
Collapse
|
5
|
Balbinot GDS, Bahlis EADC, Visioli F, Leitune VCB, Soares RMD, Collares FM. Polybutylene-adipate-terephthalate and niobium-containing bioactive glasses composites: Development of barrier membranes with adjusted properties for guided bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 125:112115. [PMID: 33965098 DOI: 10.1016/j.msec.2021.112115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/29/2021] [Accepted: 04/13/2021] [Indexed: 02/08/2023]
Abstract
This study aimed to develop bioactive guided bone regeneration (GBR) membranes by manufacturing PBAT/BAGNb composites as casting films. Composites were produced by melt-extrusion, and BAGNb was added at 10 wt%, 20 wt%, and 30 wt% concentration. Pure PBAT membranes were used as a control (0wt%BAGNb). FTIR and thermogravimetric analysis characterized the composites. Barrier membranes were produced by solvent casting, and their mechanical and surface properties were assessed by tensile strength test and contact angle analysis, respectively. The ion release and cell behavior were evaluated by pH, cell proliferation, and mineralization. Composites were successfully produced, and the chemical structure showed no interference of BAGNb in the PBAT structure. The addition of BAGNb increased the stiffness of the membranes and reduced the contact angle, increasing the roughness in one side of the membrane. Sustained pH increment was observed for BAGNb-containing membranes with increased proliferation and mineralization as the concentration of BAGNb increases. The incorporation of up to 30 wt% of BAGNb into PBAT barrier membranes was able to maintain adequate chemical-mechanical properties leading to the production of materials with tailored surface properties and bioactivity. Finally, this biomaterial class showed outstanding potential and may contribute to bone formation in GBR procedures.
Collapse
Affiliation(s)
- Gabriela de Souza Balbinot
- Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | | | - Fernanda Visioli
- Patology Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | | | | | - Fabricio Mezzomo Collares
- Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| |
Collapse
|
6
|
Ferreira BC, Freire AR, Araujo R, do Amaral-Silva GK, Okamoto R, Prado FB, Rossi AC. β-catenin and Its Relation to Alveolar Bone Mechanical Deformation - A Study Conducted in Rats With Tooth Extraction. Front Physiol 2020; 11:549. [PMID: 32581840 PMCID: PMC7291952 DOI: 10.3389/fphys.2020.00549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/30/2020] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to analyze the relationship between alveolar bone deformation and β-catenin expression levels in response to the mechanical load changed by dental extraction in adult rats. Twenty-four male rats (Rattus norvegicus albinus), Wistar linage, at 2 months of age, were used. The right upper incisor tooth was extracted, and euthanasia occurred in periods 5 (n = 6), 7 (n = 6), and 14 (n = 6) days after Day 0. In the control group (n = 6), the dentition was maintained. The euthanasia occurred within 14 days after day 0. After euthanasia, the rats of all groups had their left jaw with tooth removed and separated in the middle. The pieces were undergone routine histological processing and then the immunohistochemical marking were performed to label expression of the primary β-catenin antibody, which was evaluated by qualitative and quantitative analysis. One head by each group (control and experimental) was submitted to computerized microtomography. After the three-dimensional reconstruction of the skull of the rat in each group, the computational simulation for finite elements analysis were performed to simulate a bite in the incisors. In finite element analysis, the strain patterns were evaluated after the application of bite force. The results were analyzed considering the areas in which changes in the amount of deformations were detected. The action of the bite force in the experimental condition, resulted in a uniform distribution of the amount of deformations, in addition to lower amount of deformation areas, differentiating from the control group. Comparing with the control group, the levels of β-catenin signaled in the lingual bone of the middle third of the alveolar bone were raised in the periods of 5 and 14 days. The increased β-catenin positive staining intensity was concentrated on osteocytes and gaps of osteocytes. The findings of the present study were in accordance with our hypothesis that the condition of dental extraction can cause the expression of β-catenin and alter the regimes of bone deformation.
Collapse
Affiliation(s)
- Beatriz Carmona Ferreira
- Laboratory for Mechanobiology Research, Biosciences Department, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Alexandre Rodrigues Freire
- Laboratory for Mechanobiology Research, Biosciences Department, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Rafael Araujo
- São Leopoldo Research Institute, São Leopoldo Mandic University, Campinas, Brazil
| | - Gleyson Kleber do Amaral-Silva
- Oral Pathology Laboratory, Oral Diagnosis Department, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Roberta Okamoto
- Laboratory for Study of Mineralized Tissue, Basic Sciences Department, School of Dentistry of Araçatuba, São Paulo State University, Araçatuba, Brazil
| | - Felippe Bevilacqua Prado
- Laboratory for Mechanobiology Research, Biosciences Department, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Ana Cláudia Rossi
- Laboratory for Mechanobiology Research, Biosciences Department, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| |
Collapse
|
7
|
Demyashkin G, Kogan E, Borozdkin L, Demura T, Shalamova E, Centroev Z, Ivanova I, Gevandova M, Smirnova-Sotmari V, Kalinin S. Immunohistochemical and morphological characteristics of tissues response to polylactic acid membranes with silver nanoparticles. Med Oral Patol Oral Cir Bucal 2020; 25:e29-e33. [PMID: 31880292 PMCID: PMC6982983 DOI: 10.4317/medoral.23171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022] Open
Abstract
Background The aim of this research was to study anti-microbial and anti-inflammatory characteristics of silver nanoparticles helping bone structures to recover during late stage of parodontitis, which afterwards will increase the effect of bone regeneration operations.
Material and Methods We assessed colloid solution-derived silver nanoparticles coating of polylactic acid membrane regarding tissue foreign body response. Thirty eight polylactic acid membranes were implanted intracranially in rabbits – ten unmodified (control group) and twenty eight with silver nanoparticles coating (experimental group). In controls, penicillin was used for infection prophylaxis. Tissue response was assessed by light microscopy and immunohistochemistry (CD3, CD15, CD30) 2 weeks after implantation.
Results inflammation markers in experimental group were significantly lower than in control group, there were no signs of forming a fibrosis capsule nor infectious signs.
Conclusions colloid silver solution can be used as a source of nanoparticles for anti-microbial and anti-inflammatory biodegradable membranes’ coating. Key words:Guided bone regeneration, polylactic acid membrane, silver nanoparticles.
Collapse
Affiliation(s)
- G Demyashkin
- Department of Pathology Sechenov First Moscow State Medical University 119991, ul. Trubetskaya, 8, Moscow, Russia
| | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Qi J, Zhang Y, Liu X, Zhang Q, Xiong C. Preparation and properties of a biodegradable poly(lactide- co-glycolide)/poly(trimethylene carbonate) porous composite scaffold for bone tissue engineering. NEW J CHEM 2020. [DOI: 10.1039/d0nj02921a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
New biodegradable PLGA/PTMC composite porous scaffold with high porosity, mechanical properties, significant homogeneous, interconnected pore network and good biocompatibility.
Collapse
Affiliation(s)
- Jin Qi
- Chengdu institute of Organical Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of the Chinese Academy of Sciences
| | - Yu Zhang
- Chengdu institute of Organical Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of the Chinese Academy of Sciences
| | - Xiliang Liu
- Chengdu institute of Organical Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of the Chinese Academy of Sciences
| | - Qianmao Zhang
- Chengdu institute of Organical Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of the Chinese Academy of Sciences
| | - Chengdong Xiong
- Chengdu institute of Organical Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
| |
Collapse
|
9
|
Guo Z, Liang J, Poot AA, Grijpma DW, Chen H. Fabrication of poly (trimethylene carbonate)/reduced graphene oxide-graft-poly (trimethylene carbonate) composite scaffolds for nerve regeneration. ACTA ACUST UNITED AC 2019; 14:024104. [PMID: 30665200 DOI: 10.1088/1748-605x/ab0053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
One of the key challenges for neural tissue engineering is to exploit functional materials to guide and support nerve regeneration. Currently, reduced graphene oxide (rGO), which is well-known for its unique electrical and mechanical properties, has been incorporated into biocompatible polymers to manufacture functional scaffolds for nerve tissue engineering. However, rGO has poor dispersity in polymer matrix, which limits its further application. Here, we replaced rGO with rGO-graft-PTMC. The rGO-graft-PTMC was firstly prepared by grafting trimethylene carbonate (TMC) oligomers onto rGO. Subsequently, PTMC/rGO-graft-PTMC composite fibrous mats were fabricated by electrospinning of a dispersion of PTMC and rGO-graft-PTMC. The loading of rGO-graft-PTMC could reach up to 6 wt% relative to PTMC. Scanning electron microscopy images showed that the morphologies and average diameters of PTMC/rGO-graft-PTMC composite fibrous mats were affected by the content of rGO-graft-PTMC. Additionally, the incorporation of rGO-graft-PTMC resulted in enhanced thermal stability and hydrophobicity of PTMC fibers. Biological results demonstrated that PC12 cells showed higher cell viability on PTMC/rGO-graft-PTMC fibers of 2.4, 4.0 and 6.0 wt% rGO-graft-PTMC compared to pure PTMC fibers. These results suggest that PTMC/rGO-graft-PTMC composite fibrous structures hold great potential for neural tissue engineering.
Collapse
Affiliation(s)
- Zhengchao Guo
- Department of Biomaterials Science and Technology, University of Twente, The Netherlands
| | | | | | | | | |
Collapse
|
10
|
Poly(trimethylene carbonate)-based composite materials for reconstruction of critical-sized cranial bone defects in sheep. J Craniomaxillofac Surg 2017; 45:338-346. [DOI: 10.1016/j.jcms.2016.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/03/2016] [Accepted: 12/07/2016] [Indexed: 12/25/2022] Open
|
11
|
Zhang Y, Yang S, Zhou W, Fu H, Qian L, Miron RJ. Addition of a Synthetically Fabricated Osteoinductive Biphasic Calcium Phosphate Bone Graft to BMP2 Improves New Bone Formation. Clin Implant Dent Relat Res 2015; 18:1238-1247. [PMID: 26510170 DOI: 10.1111/cid.12384] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Bone morphogenetic protein-2 (BMP2) has been successfully utilized in dentistry to promote new bone formation because of its osteoinductive ability to recruit mesenchymal progenitor cells and induce their differentiation to bone-forming osteoblasts. Recently, novel biphasic calcium phosphate scaffolds have been developed with similar osteoinductive properties capable of forming ectopic bone formation. PURPOSE The aim of the present study was to assess whether the combination of BMP2 with this novel Biphasic Calcium Phosphate (BCP) scaffold may additionally promote new bone regeneration. MATERIALS AND METHODS Cylindrical bone defects measuring 2.5 mm were created bilaterally in the femurs of 18 Wistar rats. After 4 weeks, the following six groups were assessed for new bone formation by micro-computed tomography (CT) as well as histological assessment: 1) collagen scaffolds + 20 μg of BMP2; 2) collagen scaffolds + 50 μg of BMP2; 3) collagen scaffolds + 100 μg of BMP2; 4) BCP scaffolds + 20 μg of BMP2; 5) BCP scaffolds + 50 μg of BMP2; and 6) BCP scaffolds + 100 μg of BMP2. Furthermore, tartrate-resistant acid phosphatase (TRAP) staining was utilized to assess osteoclast activity and osteoclast number. The release kinetics of BMP2 from both BCP and collagen scaffolds was investigated over a 14-day period. RESULTS The results from present study demonstrate that BMP2 is able to promote new bone formation in a concentration dependant manner when loaded with either a collagen scaffolds or BCP scaffolds. Micro-CT analysis demonstrated significantly higher levels of new bone formation in groups containing BCP + BMP2 when compared with collagen scaffolds + BMP2. BMP2 had little effect on osteoclast activity; however, less TRAP staining and osteoclast number was observed in the defects receiving collagen scaffolds when compared with BCP scaffolds. The release of BMP2 over time was rapidly released after 1 day on BCP scaffolds whereas a gradually release over time was observed for collagen scaffolds up to 14 days. CONCLUSION The osteoinductive properties of BMP2 may further be enhanced by its combination with a novel synthetically fabricated osteoinductive BCP scaffold. Future clinical testing is required to further assess these preliminary findings.
Collapse
Affiliation(s)
- Yufeng Zhang
- Department of Oral Implantology, School of Stomatology, Wuhan University, Wuhan, China
| | - Shuang Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Wei Zhou
- Hangzhou Jiuyuan Gene Engineering Co, Hangzhou, China
| | - Hang Fu
- Hangzhou Jiuyuan Gene Engineering Co, Hangzhou, China
| | - Li Qian
- Hangzhou Jiuyuan Gene Engineering Co, Hangzhou, China
| | - Richard J Miron
- Department of Periodontology, Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| |
Collapse
|
12
|
Eglin D, Alini M, de Bruijn J, Gautrot J, Grijpma DW, Kamer L, Lai Y, Lu S, Peijs T, Peng J, Tang TT, Wang X, Wang X, Richards RG, Qin L. The RAPIDOS project-European and Chinese collaborative research on biomaterials. J Orthop Translat 2015; 3:78-84. [PMID: 30035043 PMCID: PMC5982356 DOI: 10.1016/j.jot.2015.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 01/28/2015] [Accepted: 02/10/2015] [Indexed: 11/15/2022] Open
Abstract
The research project entitled “rapid prototyping of custom-made bone-forming tissue engineering constructs” (RAPIDOS) is one of the three unique projects that are the result of the first coordinated call for research proposals in biomaterials launched by the European Union Commission and the National Natural Science Foundation of China in 2013 for facilitating bilateral translational research. We formed the RAPIDOS European and Chinese consortium with the aim of applying technologies creating custom-made tissue engineered constructs made of resorbable polymer and calcium phosphate ceramic composites specifically designed by integrating the following: (1) imaging and information technologies, (2) biomaterials and process engineering, and (3) biological and biomedical engineering for novel and truly translational bone repair solutions. Advanced solid free form fabrication technologies, precise stereolithography, and low-temperature rapid prototyping provide the necessary control to create innovative high-resolution medical implants. The use of Chinese medicine extracts, such as the bone anabolic factor icaritin, which has been shown to promote osteogenic differentiation of stem cells and enhance bone healing in vivo, is a safe and technologically relevant alternative to the intensely debated growth factors delivery strategies. This unique initiative driven by a global consortium is expected to accelerate scientific progress in the important field of biomaterials and to foster strong scientific cooperation between China and Europe.
Collapse
Affiliation(s)
- David Eglin
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - Mauro Alini
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - Joost de Bruijn
- Xpand Biotechnology B.V., Professor Bronkhorstlaan 10, Building 48, 3723 MB Bilthoven, The Netherlands
| | - Julien Gautrot
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Dirk W Grijpma
- MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.,Department of Biomaterials Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.,Department of Biomedical Engineering, University of Groningen, University Medical Center Groningen, W.J. Kolff Institute, P.O. Box 196, 9700 AD Groningen, The Netherlands
| | - Lukas Kamer
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - Yuxiao Lai
- Center for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, China
| | - Shibi Lu
- Institute of Orthopaedics of the General Hospital of the People's Liberation Army, 28 Fuxing Road, Beijing, China
| | - Ton Peijs
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaojiu Road, Shanghai 20001, China
| | - Jian Peng
- Institute of Orthopaedics of the General Hospital of the People's Liberation Army, 28 Fuxing Road, Beijing, China
| | - Ting Ting Tang
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaojiu Road, Shanghai 20001, China
| | - Xianluan Wang
- Center for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, China
| | - Xinjiang Wang
- Institute of Orthopaedics of the General Hospital of the People's Liberation Army, 28 Fuxing Road, Beijing, China
| | - R Geoff Richards
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - Ling Qin
- Center for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, China.,Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Chinese University of Hong Kong, Hong Kong SAR, China
| |
Collapse
|