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Feng Y, Wang H, Xu S, Huang J, Pei Q, Wang Z. The detection of Gper1 as an important gene promoting jawbone regeneration in the context of estrogen deficiency. Bone 2024; 180:116990. [PMID: 38141748 DOI: 10.1016/j.bone.2023.116990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Numerous studies have demonstrated that estrogen deficiency inhibit the proliferation and differentiation of pre-osteoblasts in skeleton by affecting osteogenic signaling, lead to decreased bone mass and impaired regeneration. To explore the mechanisms maintaining bone regeneration under estrogen deficiency, we randomly selected 1102 clinical cases, in which female patients aged between 18 and 75 have underwent tooth extraction in Stomatological Hospital of Tongji University, there is little difference in the healing effect of extraction defects, suggesting that to some extent, the regeneration of jawbone is insensitive to the decreased estrogen level. To illuminate the mechanisms promoting jawbone regeneration under estrogen deficiency, a tooth extraction defect model was established in the maxilla of female rats who underwent ovariectomy (OVX) or sham surgery, and jawbone marrow stromal cells (BMSCs) were isolated for single-cell sequencing. Further quantitative PCR, RNA interference, alizarin red staining, immunohistochemistry and western blotting experiments demonstrated that in the context of ovariectomy, maxillary defects promoted G protein-coupled estrogen receptor 1 (Gper1) expression, stimulate downstream cAMP/PKA/pCREB signaling, and facilitate cell proliferation, and thus provided sufficient progenitors for osteogenesis and enhanced the regeneration capacity of the jawbone. Correspondingly, the heterozygous deletion of the Gper1 gene attenuated the phosphorylation of CREB, led to decreased cell proliferation, and impaired the restoration of maxillary defects. This study demonstrates the importance of Gper1 in maintaining jawbone regeneration, especially in the context of estrogen deficiency.
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Affiliation(s)
- Yuan Feng
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Haicheng Wang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Shuyu Xu
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Jie Huang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Qingguo Pei
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No.100 Haining Road, Shanghai 200080, PR China
| | - Zuolin Wang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China.
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Ramanathan M, Shijirbold A, Okui T, Tatsumi H, Kotani T, Shimamura Y, Morioka R, Ayasaka K, Kanno T. In Vivo Evaluation of Bone Regenerative Capacity of the Novel Nanobiomaterial: β-Tricalcium Phosphate Polylactic Acid-co-Glycolide (β-TCP/PLLA/PGA) for Use in Maxillofacial Bone Defects. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:91. [PMID: 38202548 PMCID: PMC10780666 DOI: 10.3390/nano14010091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/23/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024]
Abstract
Maxillofacial bone defects are treated by autografting or filling with synthetic materials in various forms and shapes. Electrospun nanobiomaterials are becoming popular due to their easy placement and handling; combining ideal biomaterials extrapolates better outcomes. We used a novel electrospun cotton-like fiber made from two time-tested bioresorbable materials, β-TCP and PLLA/PGA, to check the feasibility of its application to maxillofacial bone defects through an in vivo rat mandibular bone defect model. Novel β-TCP/PLLA/PGA and pure β-TCP blocks were evaluated for new bone regeneration through assessment of bone volume, inner defect diameter reduction, and bone mineral density. Bioactive/osteoconductivity was checked by scoring the levels of Runt-related transcription factor x, Leptin Receptor, Osteocalcin, and Periostin biomarkers. Bone regeneration in both β-TCP/PLLA/PGA and β-TCP was comparable at initial timepoints. Osteogenic cell accumulation was greater in β-TCP/PLLA/PGA than in β-TCP at initial as well as late phases. Periostin expression was more marked in β-TCP/PLLA/PGA. This study demonstrated comparable results between β-TCP/PLLA/PGA and β-TCP in terms of bone regeneration and bioactivity, even with a small material volume of β-TCP/PLLA/PGA and a decreased percentage of β-TCP. Electrospun β-TCP/PLLA/PGA is an ideal nanobiomaterial for inducing bone regeneration through osteoconductivity and bioresorbability in bony defects of the maxillofacial region.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Takahiro Kanno
- Department of Oral and Maxillofacial Surgery, Shimane University Faculty of Medicine, 89-1, Enya-Cho, Izumo 693-8501, Shimane, Japan; (M.R.); (A.S.); (T.O.); (H.T.); (T.K.); (Y.S.); (R.M.); (K.A.)
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da Silva Sasso GR, Florencio-Silva R, de Pizzol-Júnior JP, Gil CD, Simões MDJ, Sasso-Cerri E, Cerri PS. Additional Insights Into the Role of Osteocalcin in Osteoblast Differentiation and in the Early Steps of Developing Alveolar Process of Rat Molars. J Histochem Cytochem 2023; 71:689-708. [PMID: 37953508 PMCID: PMC10691409 DOI: 10.1369/00221554231211630] [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: 06/15/2023] [Accepted: 10/05/2023] [Indexed: 11/14/2023] Open
Abstract
This study investigated whether osteocalcin (OCN) is present in osteoblast precursors and its relationship with initial phases of alveolar process formation. Samples of maxillae of 16-, 18-, and 20-day-old rat embryos (E16, E18, and E20, respectively), and 05-, 10-, and 15-day-old postnatal rats (P05, P10, and P15, respectively) were fixed and embedded in paraffin or araldite. Immunohistochemistry for osterix (Osx), alkaline phosphatase (ALP), and OCN detection was performed and the number of immunolabelled cells was computed. Non-decalcified sections were subjected to the von Kossa method combined with immunohistochemistry for Osx or OCN detection. For OCN immunolocalization, samples were fixed in 0.5% glutaraldehyde/2% formaldehyde and embedded in LR White resin. The highest number of ALP- and OCN-immunolabelled cells was observed in dental follicle of E16 specimens, mainly in basal portions of dental alveolus. In corresponding regions, osteoblasts in differentiation adjacent to von Kossa-positive bone matrix exhibited Osx and OCN immunoreactivity. Ultrastructural analysis revealed OCN immunoreactive particles inside osteoblast in differentiation, and in bone matrix associated with collagen fibrils and within matrix vesicles, at early stages of alveolar process formation. Our results indicate that OCN plays a role in osteoblast differentiation and may regulate calcium/phosphate precipitation during early mineralization of the alveolar process.
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Affiliation(s)
- Gisela Rodrigues da Silva Sasso
- Disciplina de Histologia e Biologia Estrutural, Departamento de Morfologia e Genética, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brasil
| | - Rinaldo Florencio-Silva
- Disciplina de Histologia e Biologia Estrutural, Departamento de Morfologia e Genética, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brasil
- Departamento de Ginecologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brasil
| | - José Paulo de Pizzol-Júnior
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Cristiane Damas Gil
- Disciplina de Histologia e Biologia Estrutural, Departamento de Morfologia e Genética, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brasil
| | - Manuel de Jesus Simões
- Disciplina de Histologia e Biologia Estrutural, Departamento de Morfologia e Genética, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brasil
| | - Estela Sasso-Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Paulo Sérgio Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
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Histological evaluation of the effects of bone morphogenetic protein 9 and angiopoietin 1 on bone healing. J Taibah Univ Med Sci 2023; 18:954-963. [PMID: 36875339 PMCID: PMC9982621 DOI: 10.1016/j.jtumed.2023.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/09/2023] [Accepted: 02/08/2023] [Indexed: 02/24/2023] Open
Abstract
Objectives Bone healing remains a critical clinical orthopedic problem. Bone, which is a greatly vascularized tissue, depends on the tight temporal and spatial link between blood vessels and bone cells. Thus, angiogenesis is crucial for skeletal growth and bone fracture healing. The purpose of this study was to evaluate the efficacy of the local application of osteogenic and angiogenic factors such as bone morphogenetic protein 9 (BMP9) and angiopoietin 1 (Ang1), respectively, and their combination as an osteoinducer in the process of bone healing. Methods Forty-eight male albino rats, weighing 300-400 g and aged 6-8 months, were utilized in this study. The animals underwent surgery on the medial side of the tibia bone. In the control group, an absorbable hemostatic sponge was locally applied to the bone defect, while experimental groups were separated into three groups. In Group I, 1 mg BMP9 was locally applied, Group II was treated with 1 mg Ang1, and Group III was treated with local application of a combination (0.5 mg BMP9 and 0.5 mg Ang1). All experimental groups were fixed with an absorbable hemostatic sponge. The rats were sacrificed on days 14 and 28 after surgery. Results Local application of BMP9 alone, Ang1 alone, and their combination to a tibia defect caused osteoid tissue formation and significantly increased the number of bone cells. A gradual decrease in the number of trabecular bone, an increase in trabecular area, and no significant difference in the bone marrow area were noted. Conclusion The combination of BMP9 and Ang1 has therapeutic potential in promoting the healing process of bone defects. Osteogenesis and angiogenesis are regulated by BMP9 and Ang1. These factors act together to accelerate bone regeneration more efficiently than either factor alone.
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Fidan F, Kılıç F, Lapçin O, Polat A, Kılıç M, Sökücü S. Effect of transported segment size on the new bone formation of the rabbit femur in the Ilizarov bone transport method. ACTA ORTHOPAEDICA ET TRAUMATOLOGICA TURCICA 2023; 57:215-220. [PMID: 37850240 PMCID: PMC10724839 DOI: 10.5152/j.aott.2023.22087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/23/2023] [Indexed: 10/19/2023]
Abstract
OBJECTIVE This study aimed to compare histological and radiological union in the bone transport of 3 segments of different sizes to reconstruct the rabbit femur's bone defects. METHODS Thirty rabbits were divided into 3 groups; a 1-cm defect was created in the femur in all rabbits. The length of the segment to be transferred was 10% of the femur length in group 1, 15% in group 2, and 20% in group 3. All defects were reconstructed by applying bone transport. At the end of the consolidation period, the distraction zone was compared radiologically and histologically. RESULTS While there was no radiological difference between the groups, the highest histological scores were obtained from group 3. Osteocalcin staining revealed similar involvement in groups 2 and 3, butless involvement in group 1. CONCLUSION Evidence from this study has shown that as the size of the segment used for bone transport increases, more stable fixation and better histological union tissue can be obtained in the rabbit femoral defect model.
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Affiliation(s)
- Fırat Fidan
- Department of Orthopedic and Traumatology, Istanbul Aydın University, School of Medicine, Istanbul, Turkey
| | - Feyzi Kılıç
- Department of Orthopedic and Traumatology, University of Health Sciences, Gaziosmanpaşa Taksim Training and Research Hospital, Istanbul, Turkey
| | - Osman Lapçin
- Department of Orthopedic and Traumatology, Istanbul Aydın University, School of Medicine, Istanbul, Turkey
| | - Abdülkadir Polat
- Department of Orthopedic and Traumatology, University of Health Sciences, Gaziosmanpaşa Taksim Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Kılıç
- Department of Orthopedic and Traumatology, University of Health Sciences, Gaziosmanpaşa Taksim Training and Research Hospital, Istanbul, Turkey
| | - Sami Sökücü
- Department of Orthopedic and Traumatology, Istanbul Aydın University, School of Medicine, Istanbul, Turkey
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Deluiz D, Delcroix GJR, Fraga SRG, D'Ippolito G, Grau-Monge C, Bonnin-Marquez A, Reiner T, Amadeu T, Tinoco EMB, Schiller PC. Viable cryopreserved human bone graft exhibit superior osteogenic properties in mandibular lateral augmentation. Sci Rep 2023; 13:1422. [PMID: 36697485 PMCID: PMC9876935 DOI: 10.1038/s41598-023-28170-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/13/2023] [Indexed: 01/26/2023] Open
Abstract
Lack of bone volume to place dental implants is frequently a problem in the reconstruction of edentulous patients. Even though autografts are the gold standard for jaw regeneration, morbidity associated with the harvesting site stimulates the demand for other substitutes. The aim of this study is to characterize the incorporation and the osteogenic ability of a viable cryopreserved human bone graft (VC-HBG) in the mandibular augmentation in rats. Bone chips from fresh human vertebrae cadaveric donors were processed, cryoprotected and deep-frozen at - 80 °C maintaining its cell viability. A jaw augmentation model was used in 20 athymic nude rats allocated into 2 groups to either receive the VC-HBG or an acellular graft as control (A-HBG). The assessment of the grafts' incorporation was performed at 4 and 8 weeks by micro-CT, histomorphometry and immunohistochemistry. Bone volume gain was significantly higher for the VC-HBG group at both time points. At 4 weeks, the A-HBG group presented significantly higher mineral density, but at 8 weeks, the VC-HBG group showed significantly higher values than the A-HBG. There was no statistical difference between VC-HBG and A-HBG groups at 4-weeks for remaining graft particles, while at 8 weeks, the VC-HBG group showed significantly less graft remnants. Collagen I, osteopontin and tartrate-resistant acid phosphatase expression were significantly higher in the VC-HBG group at both time points, while osteocalcin expression was significantly higher in the VC-HBG group at 8-weeks compared to the A-HBG group. This experimental research demonstrated that the VC-HBG shows positive osteogenic properties, greater bone formation, higher rate of bone remodeling and a better overall incorporation in rats' mandibles compared to the A-HBG.
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Affiliation(s)
- Daniel Deluiz
- Department of Periodontology, State University of Rio de Janeiro, Boulevard 28 de Setembro, 157 - 2º andar - sala 10, Rio de Janeiro, RJ, CEP 20551-030, Brazil. .,Department of Orthopedics, University of Miami, Miami, FL, USA.
| | - Gaëtan J-R Delcroix
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA.,Geriatric Research Education and Clinical Center, Miami VA Healthcare System, Miami, FL, USA
| | - Samira R G Fraga
- Department of Periodontology, State University of Rio de Janeiro, Boulevard 28 de Setembro, 157 - 2º andar - sala 10, Rio de Janeiro, RJ, CEP 20551-030, Brazil
| | - Gianluca D'Ippolito
- Department of Biomedical Engineering, College of Engineering, University of Miami, Miami, FL, USA
| | - Cristina Grau-Monge
- Geriatric Research Education and Clinical Center, Miami VA Healthcare System, Miami, FL, USA
| | - Andrea Bonnin-Marquez
- Geriatric Research Education and Clinical Center, Miami VA Healthcare System, Miami, FL, USA
| | - Teresita Reiner
- Geriatric Research Education and Clinical Center, Miami VA Healthcare System, Miami, FL, USA
| | - Thaís Amadeu
- Department of Pathology and Laboratories, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Eduardo M B Tinoco
- Department of Periodontology, State University of Rio de Janeiro, Boulevard 28 de Setembro, 157 - 2º andar - sala 10, Rio de Janeiro, RJ, CEP 20551-030, Brazil
| | - Paul Christian Schiller
- Geriatric Research Education and Clinical Center, Miami VA Healthcare System, Miami, FL, USA.
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Oliveira EA, Dalla-Costa KL, França FM, Kantovitz KR, Peruzzo DC. Influence of melatonin associated with the Bio-Gide® membrane on osteoblast activity: an in vitro Study. ACTA ODONTOLOGICA LATINOAMERICANA : AOL 2022; 35:90-97. [PMID: 36260939 DOI: 10.54589/aol.35/2/90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 03/01/2022] [Indexed: 06/16/2023]
Abstract
Melatonin (MLT) is a hormone responsible for regulating several physiological processes. It has been shown that MLT can be an important mediator in bone formation and stimulation, promoting osteoblast differentiation. In clinical practice, in tissue regeneration procedures, it is necessary to use membranes or barriers, associated with biomaterials, or not. The aim of this in vitro study was to assess the effect of melatonin on the activity of osteoblastic cells, associated, or not, with a resorbable collagen membrane (Bio-Gideä). For this, mice-derived pre-osteoblastic cells MC3T3 obtained from the ATCC (American Type Culture Collection) were used. Cultured cells were subject to the following treatments: MLT with a concentration of 1mM, a Bio-Gideä membrane and a membrane associated with MLT (Bio-Gideä + MLT). Proliferation and cell viability assays and protein lysate (ELISA test) quantification for the BMP-2 protein were carried out, in periods of 72 hours, 7 days and 10 days. After analyzing the data (one-way ANOVA, alpha=5%) it was observed that when MLT was used in isolation, there was an increase in cell proliferation and viability in osteoblastic cells (p<0.05). But, when MLT was associated with resorbable membranes, there was an inverse behavior, both in terms of proliferation and viability (p<0.05). In the case of the ELISA test, no secretion of BMP-2 was detected in any of the analyzed groups. It is concluded that MLT has a stimulatory effect on osteoblasts, but, when associated with Bio-Gideä resorbable membranes, it does not show any viable action in osteoblastic cell stimulation.
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Affiliation(s)
- Eliene A Oliveira
- Faculdade de Odontologia São Leopoldo Mandic, Departamento de Pesquisa em Odontologia, Campinas, São Paulo, Brasil
| | - Karen L Dalla-Costa
- Faculdade de Odontologia São Leopoldo Mandic, Departamento de Pesquisa em Odontologia, Campinas, São Paulo, Brasil.
| | - Fabiana Mg França
- Faculdade de Odontologia São Leopoldo Mandic, Departamento de Pesquisa em Odontologia, Campinas, São Paulo, Brasil
| | - Kamila R Kantovitz
- Faculdade de Odontologia São Leopoldo Mandic, Departamento de Pesquisa em Odontologia, Campinas, São Paulo, Brasil
| | - Daiane C Peruzzo
- Faculdade de Odontologia São Leopoldo Mandic, Departamento de Pesquisa em Odontologia, Campinas, São Paulo, Brasil
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Alves FAM, Marques MM, Cavalcanti SCSXB, Pedroni ACF, Ferraz EP, Miniello TG, Moreira MS, Jerônimo T, Deboni MCZ, Lascala CA. Photobiomodulation as adjunctive therapy for guided bone regeneration. A microCT study in osteoporotic rat model. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 213:112053. [PMID: 33142216 DOI: 10.1016/j.jphotobiol.2020.112053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/01/2020] [Accepted: 10/06/2020] [Indexed: 02/02/2023]
Abstract
Regeneration of diseased bone is challenging. Guided bone regeneration (GBR) has been applied to favor the bone repair. Photobiomodulation (PBM) is also a recognized therapy able to improve bone repair in healthy and diseased individuals. Thus, with the hypothesis that PBM therapy could improve the GBR of diseased bone, this study evaluated the effect of PBM as adjunctive therapy to GBR in osteoporotic rats. Osteoporosis was induced in rats using the oophorectomy model. Then, 5-mm calvaria bone defects were created and treated according to the experimental groups, as follows: with no further treatment (Control); conventional GBR (Membrane), GBR and PBM applied with 3 s, 4 J/cm2 and 0.12 J per point (PBM-1) and GBR and PBM applied with 10s, 14 J/cm2, 0.4 J per point (PBM-2). PBM therapy (808 nm, 40 mW, 1.42 W/cm2) was applied immediately, 48 and 96 h postoperatively. Four and eight weeks later, the samples were harvested and processed for micro-computerized tomography (Micro CT). Data were statistically compared (p < 0.05). From 4 to 8 weeks mostly significant changes were observed in the PBM groups. The bone volume fraction and number of trabeculae of the PBM groups, especially the PBM-1, were significantly higher than those of Control (p < 0.0001). The values of thickness and separation of the trabeculae and structural model index of the PBM groups were significantly smaller than Control (p < 0.0001). The connectivity density was significantly higher on Membrane and PBM groups than Control (p < 0.0004). The application of PBM as adjunctive therapy to GBR results in enhanced bone formation and maturation in comparison to the conventional GBR in the regeneration of lesions of osteoporotic bone in rats. Overviewing the challenges that face bone regeneration in patients with osteoporosis, our findings open new perspectives on the treatment of bone defects under osteoporotic conditions.
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Affiliation(s)
| | | | | | | | | | | | | | - Tomaís Jerônimo
- Department of Stomatology, School of Dentistry, University of Sao Paulo, Sao Paulo, Brazil
| | | | - Cesar Angelo Lascala
- Department of Stomatology, School of Dentistry, University of Sao Paulo, Sao Paulo, Brazil.
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Abbasi N, Lee RSB, Ivanovski S, Love RM, Hamlet S. In vivo bone regeneration assessment of offset and gradient melt electrowritten (MEW) PCL scaffolds. Biomater Res 2020; 24:17. [PMID: 33014414 PMCID: PMC7529514 DOI: 10.1186/s40824-020-00196-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 09/21/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Biomaterial-based bone tissue engineering represents a promising solution to overcome reduced residual bone volume. It has been previously demonstrated that gradient and offset architectures of three-dimensional melt electrowritten poly-caprolactone (PCL) scaffolds could successfully direct osteoblast cells differentiation toward an osteogenic lineage, resulting in mineralization. The aim of this study was therefore to evaluate the in vivo osteoconductive capacity of PCL scaffolds with these different architectures. METHODS Five different calcium phosphate (CaP) coated melt electrowritten PCL pore sized scaffolds: 250 μm and 500 μm, 500 μm with 50% fibre offset (offset.50.50), tri layer gradient 250-500-750 μm (grad.250top) and 750-500-250 μm (grad.750top) were implanted into rodent critical-sized calvarial defects. Empty defects were used as a control. After 4 and 8 weeks of healing, the new bone was assessed by micro-computed tomography and immunohistochemistry. RESULTS Significantly more newly formed bone was shown in the grad.250top scaffold 8 weeks post-implantation. Histological investigation also showed that soft tissue was replaced with newly formed bone and fully covered the grad.250top scaffold. While, the bone healing did not happen completely in the 250 μm, offset.50.50 scaffolds and blank calvaria defects following 8 weeks of implantation. Immunohistochemical analysis showed the expression of osteogenic markers was present in all scaffold groups at both time points. The mineralization marker Osteocalcin was detected with the highest intensity in the grad.250top and 500 μm scaffolds. Moreover, the expression of the endothelial markers showed that robust angiogenesis was involved in the repair process. CONCLUSIONS These results suggest that the gradient pore size structure provides superior conditions for bone regeneration.
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Affiliation(s)
- Naghmeh Abbasi
- School of Dentistry and Oral Health, Griffith University, Gold Coast Campus, Southport, Queensland 4215 Australia
- Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Southport, Queensland 4215 Australia
| | - Ryan S. B. Lee
- School of Dentistry and Oral Health, Griffith University, Gold Coast Campus, Southport, Queensland 4215 Australia
- School of Dentistry, University of Queensland, Herston Campus, Herston, Queensland 4006 Australia
| | - Saso Ivanovski
- School of Dentistry, University of Queensland, Herston Campus, Herston, Queensland 4006 Australia
| | - Robert M. Love
- School of Dentistry and Oral Health, Griffith University, Gold Coast Campus, Southport, Queensland 4215 Australia
| | - Stephen Hamlet
- School of Dentistry and Oral Health, Griffith University, Gold Coast Campus, Southport, Queensland 4215 Australia
- Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Southport, Queensland 4215 Australia
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KADİROĞLU ET, KARAYÜREK F, AKBALIK ME. Evaluation of the effects of bone morphogenetic protein-2 on the healing of bone calvarial defects in ovariectomized rats. TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES 2020. [DOI: 10.3906/vet-1911-24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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11
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Laçin N, Deveci E. Short-term use of resveratrol in alloplastic graft material applied with calvarial bone defects in rats. Acta Cir Bras 2019; 34:e201900704. [PMID: 31531539 PMCID: PMC6746564 DOI: 10.1590/s0102-865020190070000004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/23/2019] [Indexed: 11/22/2022] Open
Abstract
PURPOSE The effects of resveratrol administration on calvarial bone defects with alloplastic graft material was investigated for osteoinductive reaction and bone development in rats. METHODS Healthy male rats were randomly divided into 3 groups consisting of 10 rats. Groups were as follows: control (defect) group, defect + graft group, and defect + graft + resveratrol group. A calvarial bone defect was created in all groups, alloplastic bone grafts were applied to the defect in the 2nd and 3rd group, resveratrol (5 mg/kg/day) was added to the drinking water of the animals following graft application for 28 days in the 3rd group. RESULTS Increase in osteoclasts and necrotic changes were observed histopathologically in the control group. In the 2nd group, reduction of inflammation, congestion of blood vessels, increased osteblastic activity, osteoinductive effect, progression of osteocyte development and increased collagen fibers in connective tissue were observed. In the 3rd group, osteoblasts seemed to secrete bone matrix and accelerate osteoinductive effect with increased osteopregenitor activity and positive osteopontin and osteonectin expressions. CONCLUSION Resveratrol treatment was thought to be an alternative and supportive drug for implant application by inducing new bone formation in the calvaral defect region as a result of short-term treatment.
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Affiliation(s)
- Nihat Laçin
- PhD, Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Katip Çelebi, İzmir, Turkey. Technical procedures, manuscript preparation and writing, final approval
| | - Engin Deveci
- PhD, Professor, Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakir, Turkey. Technical procedures, histopathological examinations, manuscript preparation and writing, final approval
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Influence of Cigarette Smoke Inhalation on an Autogenous Onlay Bone Graft Area in Rats with Estrogen Deficiency: A Histomorphometric and Immunohistochemistry Study. Int J Mol Sci 2019; 20:ijms20081854. [PMID: 30991651 PMCID: PMC6515394 DOI: 10.3390/ijms20081854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/18/2019] [Accepted: 03/21/2019] [Indexed: 12/15/2022] Open
Abstract
PURPOSE The present study aimed to evaluate the influence of cigarette smoke inhalation on an autogenous onlay bone graft area, either covered with a collagen membrane or not, in healthy and estrogen-deficient rats through histomorphometry and immunohistochemistry. MATERIALS AND METHODS Sixty female rats (Wistar), weighing 250-300 g, were randomly divided and allocated into groups (either exposed to cigarette smoke inhalation or not, ovariectomized and SHAM). After 15 days, the test group underwent cigarette smoke inhalation. Sixty days after exposition, autogenous bone grafting was only performed on all right hemimandibles, and the left ones underwent autogenous onlay bone grafting with the collagen membrane (BioGide®). The graft was harvested from the parietal bone and attached to the animals' jaws (right and left). They were euthanized at 21, 45, and 60 days after grafting. Histological measurements and immunohistochemical analyses were performed, and results were submitted to a statistical analysis. RESULTS The addition of a collagen membrane to the bone graft proved more efficient in preserving graft area if compared to the graft area without a collagen membrane and the one associated with cigarette smoke inhalation at 21 (p = 0.0381) and 60 days (p = 0.0192), respectively. Cigarette smoke inhalation combined with ovariectomy promoted a significant reduction of the autogenous graft area at 21 and 60 days. At 45 days, no statistically significant results were observed. In the immunohistochemical analysis, the ovariectomized and smoking subgroups, combined or not with collagen membrane, received moderate and intense immunolabeling at 21 days for Receptor Activator of Nuclear Factor Kappa-B Ligand (RANKL) (p = 0.0017 and p = 0.0381, respectively). For Osteoprotegerin (OPG), intense immunolabeling was observed in most subgroups under analysis at 60 days. CONCLUSION Smoking inhalation promoted resorption on the autogenous onlay bone graft, mainly when associated with ovariectomy. Furthermore, when associated with the collagen membrane, a lower resorption rate was observed if compared to the absence of the membrane.
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Laçin N, İzol BS, Özkorkmaz EG, Deveci B, Tuncer MC. The effect of graft application and allopurinol treatment on calvarial bone defect in rats1. Acta Cir Bras 2019; 34:e201900306. [PMID: 30892392 PMCID: PMC6585889 DOI: 10.1590/s0102-865020190030000006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/12/2019] [Indexed: 12/27/2022] Open
Abstract
Purpose To investigate the effects of allopurinol administration on osteoinductive
reaction and bone development with graft material. Methods Thirty-six Wistar albino rats were divided into 3 groups. In the control
group, calvarial bone defect was only created without any treatment. In the
Defect + Graft group, allograft treatment was performed by forming 8 mm
calvarial bone defect. In the Defect + Graft + Allopurinol group,
alloplastic bone graft was placed in the calvarial bone defect and then,
allopurinol (50 mg/kg/day) treatment was intraperitoneally applied for 28
days. Results Histopathological examination revealed inflammation, congestion in the
vessels, and an increase in osteoclast cells in the defect area. We also
observed that new osteocyte cells, increase in connective tissue fibers, and
new bone trabeculae. Osteopontin expression was positive in osteoblast cells
and lacunated osteocyte cells were located in the periphery of the new bone
trabeculae. Osteopontin expression was also positive in osteoblasts and
osteocytes cells of new bone trabeculae in the graft site. Conclusion It has been shown that allopurinol treatment in rat calvaria defects may
induce osteoblastic activity, matrix development, mature bone cell formation
and new bone formation when used with autogenous grafts.
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Affiliation(s)
- Nihat Laçin
- PhD, Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Katip Çelebi, İzmir, Turkey. Technical procedures, manuscript preparation and writing, final approval
| | - Bozan Serhat İzol
- PhD, Research Assistant, Department of Periodontology, Faculty of Dentistry, University of Bingöl, Bingöl, Turkey. Technical procedures, manuscript preparation and writing, final approval
| | - Ebru Gökalp Özkorkmaz
- PhD, Assistant Professor, Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır, Turkey. Technical procedures, histopathological examinations, manuscript preparation and writing, final approval
| | - Buşra Deveci
- PhD, Research Assistant, Department of Periodontology, Faculty of Dentistry, University of Dicle, Diyarbakir, Turkey. Technical procedures, manuscript preparation and writing, final approval
| | - Mehmet Cudi Tuncer
- PhD, Professor, Department of Anatomy, Faculty of Medicine, Dicle University, Diyarbakır, Turkey. Technical procedures, histopathological examinations, manuscript preparation and writing, final approval
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Gonzaga MG, Santos Kotake BG, Figueiredo FAT, Feldman S, Ervolino E, Santos MCG, Issa JPM. Effectiveness of rhBMP‐2 association to autogenous, allogeneic, and heterologous bone grafts. Microsc Res Tech 2019; 82:689-695. [DOI: 10.1002/jemt.23215] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/03/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Miliane Gonçalves Gonzaga
- Ribeirão Preto Medical School, Department of Biomechanics, Medicine and Rehabilitation of LocomotorUniversity of São Paulo São Paulo Brazil
| | - Bruna Gabriela Santos Kotake
- Ribeirão Preto Medical School, Department of Biomechanics, Medicine and Rehabilitation of LocomotorUniversity of São Paulo São Paulo Brazil
| | | | - Sara Feldman
- School of Medicine, LABOATEM ‐ Osteoarticular Biology, Tissue Engineering and Emerging Therapies LaboratoryNational Rosario University Santa Fe Argentina
| | - Edilson Ervolino
- Faculty of Dentistry, Department of Basic SciencesSão Paulo State University São Paulo Brazil
| | - Maria Cecília Gorita Santos
- School of Dentistry of Ribeirão Preto, Department of Pediatric DentistryUniversity of São Paulo São Paulo Brazil
| | - João Paulo Mardegan Issa
- School of Dentistry of Ribeirão Preto, Department of Pediatric DentistryUniversity of São Paulo São Paulo Brazil
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Chen JH, Lin CY, Chen YCM, Tian WT, Chu HM, Chang TW. Bispecific Antibody Binding To RANKL and Osteonectin with Enhanced Localization to the Bone. Mol Pharm 2017; 14:4113-4120. [PMID: 28954509 DOI: 10.1021/acs.molpharmaceut.7b00501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Therapeutics reducing bone turnover, such as denosumab (Dmab), an anti-RANKL antibody, can provide treatments for patients with bone destruction. However, some patients with osteoporosis or localized primary bone tumors and many patients with various types of bone-metastatic cancer display unsatisfactory responses to Dmab. For achieving greater efficiency of RANKL neutralization in the bone microenvironment by enhancing the distribution of Dmab to the bone, we reengineered Dmab by fusing with single-chain variable fragments of an antibody specific for osteonectin (On), which is abundantly expressed in osseous tissues. The bispecific antibody, Dmab-FvOn, showed a similar activity as Dmab in inhibiting RANKL as examined in an osteoclast differentiation assay. When administered to mice, Dmab-FvOn was found to localize in increased proportions at the endosteum of the bone where osteonectin is abundant. Our study suggests that by linking anti-RANKL with an osteonectin-targeting moiety, a greater proportion of the therapeutic effector can be distributed in the bone. Future studies are needed to investigate whether the bispecific antibody can achieve higher therapeutic efficacy and lower toxicity.
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Affiliation(s)
| | | | | | | | | | - Tse Wen Chang
- Immunwork, Inc. , Taipei 115, Taiwan.,Genomics Research Center, Academia Sinica , Taipei 115, Taiwan
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Jayash SN, Hashim NM, Misran M, Baharuddin NA. Local application of osteoprotegerin-chitosan gel in critical-sized defects in a rabbit model. PeerJ 2017; 5:e3513. [PMID: 28674665 PMCID: PMC5494162 DOI: 10.7717/peerj.3513] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 06/07/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Osteoprotegerin (OPG) is used for the systemic treatment of bone diseases, although it has many side effects. The aim of this study was to investigate a newly formulated OPG-chitosan gel for local application to repair bone defects. Recent studies have reported that immunodetection of osteopontin (OPN) and osteocalcin (OC) can be used to characterise osteogenesis and new bone formation. METHODS The osteogenic potential of the OPG-chitosan gel was evaluated in rabbits. Critical-sized defects were created in the calvarial bone, which were either left unfilled (control; group I), or filled with chitosan gel (group II) or OPG-chitosan gel (group III), with rabbits sacrificed at 6 and 12 weeks. Bone samples from the surgical area were decalcified and treated with routine histological and immunohistochemical protocols using OC, OPN, and cathepsin K (osteoclast marker) antibodies. The toxicity of the OPG-chitosan gel was evaluated by biochemical assays (liver and kidney function tests). RESULTS The mean bone growth in defects filled with the OPG-chitosan gel was significantly higher than those filled with the chitosan gel or the unfilled group (p < 0.05). At 6 and 12 weeks, the highest levels of OC and OPN markers were found in the OPG-chitosan gel group, followed by the chitosan gel group. The number of osteoclasts in the OPG-chitosan gel group was lower than the other groups. The results of the liver and kidney functional tests indicated no signs of harmful systemic effects of treatment. In conclusion, the OPG-chitosan gel has many characteristics that make it suitable for bone repair and regeneration, highlighting its potential benefits for tissue engineering applications.
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Affiliation(s)
- Soher N Jayash
- Department of Restorative Dentistry/Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Najihah M Hashim
- Department of Pharmacy/Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Centre For Natural Products And Drug Discovery (CENAR), Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Misni Misran
- Department of Chemistry/Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - N A Baharuddin
- Department of Restorative Dentistry/Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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