1
|
Radzki RP, Bienko M, Wolski D, Oniszczuk T, Radzka-Pogoda A, Polak P, Borzecki A, Stasiak M. Lipoic acid (LA) dose-dependently protects bone losses in the mandible of rats during the development of osteopenia by inhibiting oxidative stress and promoting bone formation. Biomed Pharmacother 2022; 146:112467. [PMID: 34891114 DOI: 10.1016/j.biopha.2021.112467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/16/2021] [Accepted: 11/19/2021] [Indexed: 02/07/2023] Open
Abstract
Our study was carried out to evaluate the effect of lipoic acid (LA) on the densitometric properties, structure and mechanical strength of the mandible of Wistar rats with developing osteopenia. The study used 42 sham-operated (SHO) and ovariectomized (OVX) rats. The OVX rats were randomly divided (n = 6) onto two controls treated subcutaneously with physiological saline (OVX-PhS) and 17β-estradiol (OVX-E2), respectively, and onto four experimental OVX groups that received LA in the doses of 12.5, 25, 50 and 100 mg/kg/day for 28 days. The results demonstrated that the lack of estrogen brought about osteopenic bone changes, especially in the trabecular compartment. In addition, while the usage of LA in the doses of 12.5 and 25 LA had no effect in OVX rats, the dose of 100 effectively inhibited osteopenic changes of the mandible. This dose maintained structural, densitometric and mechanical parameters at levels like that in the SHO and OVX-E2 groups by inhibiting the destructive influence of oxidative stress. Dose 50, however, was revealed to be the most effective. It not only inhibited atrophic changes and the influence of oxidative stress, but also stimulated the formation of mandibular bone tissue. Our results suggest that the administration of LA is effective in preventing atrophic changes in the mandibular bone tissue in conditions of ovarian hormone deficiency and suggest its potential in the therapy of osteoporosis.
Collapse
Affiliation(s)
- Radoslaw Piotr Radzki
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12 Street, 20-033 Lublin, Poland
| | - Marek Bienko
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12 Street, 20-033 Lublin, Poland.
| | - Dariusz Wolski
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12 Street, 20-033 Lublin, Poland
| | - Tomasz Oniszczuk
- Department of Thermal Technology and Food Process Engineering, University of Life Sciences in Lublin, Gleboka 31 Street, 20-612 Lublin, Poland
| | - Agnieszka Radzka-Pogoda
- Chair and Department of Hygiene, Medical University of Lublin, Radziwillowska 11 Street, 20-080 Lublin, Poland
| | - Pawel Polak
- St Johns' Oncology Center in Lublin (COZL) Trauma and Orthopaedic Surgery Department, Jaczewskiego 7 Street, 20-090 Lublin, Poland
| | - Andrzej Borzecki
- Chair and Department of Hygiene, Medical University of Lublin, Radziwillowska 11 Street, 20-080 Lublin, Poland
| | - Mateusz Stasiak
- Department of Physical Properties of Plant Materials, Laboratory of Mechanics of Granular Materials, Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4 Street, 20-290 Lublin, Poland
| |
Collapse
|
2
|
Lee JS, Park TH, Ryu JY, Kim DK, Oh EJ, Kim HM, Shim JH, Yun WS, Huh JB, Moon SH, Kang SS, Chung HY. Osteogenesis of 3D-Printed PCL/TCP/bdECM Scaffold Using Adipose-Derived Stem Cells Aggregates; An Experimental Study in the Canine Mandible. Int J Mol Sci 2021; 22:ijms22115409. [PMID: 34063742 PMCID: PMC8196585 DOI: 10.3390/ijms22115409] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/20/2022] Open
Abstract
Three-dimensional (3D) printing is perceived as an innovative tool for change in tissue engineering and regenerative medicine based on research outcomes on the development of artificial organs and tissues. With advances in such technology, research is underway into 3D-printed artificial scaffolds for tissue recovery and regeneration. In this study, we fabricated artificial scaffolds by coating bone demineralized and decellularized extracellular matrix (bdECM) onto existing 3D-printed polycaprolactone/tricalcium phosphate (PCL/TCP) to enhance osteoconductivity and osteoinductivity. After injecting adipose-derived stem cells (ADSCs) in an aggregate form found to be effective in previous studies, we examined the effects of the scaffold on ossification during mandibular reconstruction in beagle dogs. Ten beagles were divided into two groups: group A (PCL/TCP/bdECM + ADSC injection; n = 5) and group B (PCL/TCP/bdECM; n = 5). The results were analyzed four and eight weeks after intervention. Computed tomography (CT) findings showed that group A had more diffuse osteoblast tissue than group B. Evidence of infection or immune rejection was not detected following histological examination. Goldner trichrome (G/T) staining revealed rich ossification in scaffold pores. ColI, Osteocalcin, and Runx2 gene expressions were determined using real-time polymerase chain reaction. Group A showed greater expression of these genes. Through Western blotting, group A showed a greater expression of genes that encode ColI, Osteocalcin, and Runx2 proteins. In conclusion, intervention group A, in which the beagles received the additional ADSC injection together with the 3D-printed PCL/TCP coated with bdECM, showed improved mandibular ossification in and around the pores of the scaffold.
Collapse
Affiliation(s)
- Joon Seok Lee
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.S.L.); (T.H.P.); (J.Y.R.); (E.J.O.); (H.M.K.)
| | - Tae Hyun Park
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.S.L.); (T.H.P.); (J.Y.R.); (E.J.O.); (H.M.K.)
| | - Jeong Yeop Ryu
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.S.L.); (T.H.P.); (J.Y.R.); (E.J.O.); (H.M.K.)
| | - Dong Kyu Kim
- TINA Aesthetic Surgical Clinic, Daegu 41938, Korea;
| | - Eun Jung Oh
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.S.L.); (T.H.P.); (J.Y.R.); (E.J.O.); (H.M.K.)
- Cell & Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Hyun Mi Kim
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.S.L.); (T.H.P.); (J.Y.R.); (E.J.O.); (H.M.K.)
- Cell & Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Jin-Hyung Shim
- Department of Mechanical Engineering, Korea Polytechnic University, 237 Sangidaehak-Ro, Siheung-si 15073, Gyeonggi-do, Korea; (J.-H.S.); (W.-S.Y.)
- Research Institute, T&R Biofab Co., Ltd. 242 Pangyo-ro, Seongnam-si 13487, Gyeonggi-do, Korea;
| | - Won-Soo Yun
- Department of Mechanical Engineering, Korea Polytechnic University, 237 Sangidaehak-Ro, Siheung-si 15073, Gyeonggi-do, Korea; (J.-H.S.); (W.-S.Y.)
- Research Institute, T&R Biofab Co., Ltd. 242 Pangyo-ro, Seongnam-si 13487, Gyeonggi-do, Korea;
| | - Jung Bo Huh
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Science, School of Dentistry, Pusan National University, Yangsan-si 50612, Korea;
| | - Sung Hwan Moon
- Research Institute, T&R Biofab Co., Ltd. 242 Pangyo-ro, Seongnam-si 13487, Gyeonggi-do, Korea;
| | - Seong Soo Kang
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea;
| | - Ho Yun Chung
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.S.L.); (T.H.P.); (J.Y.R.); (E.J.O.); (H.M.K.)
- Cell & Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 41944, Korea
- BK21 FOUR KNU Convergence Educational Program of Biomedical Science for Creative Future Talents, School of Medicine, Kyungpook National University, Daegu 41944, Korea
- Correspondence: or ; Tel.: +82-53-420-5692; Fax: +82-53-425-3879
| |
Collapse
|
3
|
Chang LC, Chung CY, Chiu CH, Lin MHC, Yang JT. The Effect of Polybutylcyanoacrylate Nanoparticles as a Protos Delivery Vehicle on Dental Bone Formation. Int J Mol Sci 2021; 22:4873. [PMID: 34062952 PMCID: PMC8125394 DOI: 10.3390/ijms22094873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/23/2021] [Accepted: 05/01/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Dental implants are commonly used for missing teeth, for which success depends heavily on the quality of the alveolar bone. The creation of an ideal implant site is a key component in shortening the treatment time, which remains clinically challenging. Strontium ranelate (Protos) is an anti-osteoporotic agent which has previously been used to promote bone formation, however the systemic use of Protos has been linked to serious cardiovascular and venous thromboembolic events, thus local delivery strategies may be better suited for this purpose. In this study, a biodegradable, and biocompatible nanocarrier "polybutylcyanoacrylate" (PBCA) loaded with strontium was constructed and its ability to promote bone formation was assessed. METHODOLOGY PBCA nanoparticles loaded with strontium (PBCA-Sr NPs) were synthesized using the emulsion polymerization method, and their physical properties (zeta potential, size and shape) and entrapment efficiency were characterized. Committed MSCs (osteoblasts) were derived from the differentiation of cultured rat mesenchymal stem cells (MSC), which were tested with the PBCA-Sr NPs for cytotoxicity, inflammatory response, bone formation and mineralization. Scanning electron microscopy was performed following a 7-day treatment of PBCA-Sr NPs on decellularized procaine mandibular bone blocks grafted with osteoblasts. RESULTS Spherical PBCA-Sr NPs of 166.7 ± 2.3 nm, zeta potential of -1.15 ± 0.28 mV with a strontium loading efficiency of 90.04 ± 3.27% were constructed. The presence of strontium was confirmed by energy-dispersive X-ray spectroscopy. Rat committed MSCs incubated in PBCA-Sr NPs for 24 hrs showed viabilities in excess of 90% for concentrations of up to 250 ug/mL, the cellular expression of osteocalcin and alkaline phosphatase were 1.4 and 1.3 times higher than the untreated control, and significantly higher than those treated with strontium alone. Bone formation was evident following osteoblast engraftment on the decellularized procaine mandibular bone block with PBCA-Sr NPs, which appeared superior to those treated with strontium alone. CONCLUSION Treatment of committed MSCs with PBCA-Sr NPs showed higher expression of markers of bone formation when compared with strontium alone and which corresponded to greater degree of bone formation observed on the 3-dimensinal decellularized procaine mandibular bone block. Further quantitative analysis on the extent of new bone formation is warranted.
Collapse
Affiliation(s)
- Li-Ching Chang
- Department of Dentistry, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan;
- Department of Nursing, Chang Gung University of Science and Technology, Chiayi 61363, Taiwan
| | - Chiu-Yen Chung
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi Branch, 6, Sec. West, Chai-Pu Road, Pu-Tz City, Chia-Yi 61363, Taiwan;
| | - Chun-Hui Chiu
- Graduate Institute of Health-Industry Technology, Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Tao-Yuan 33303, Taiwan;
- Department of Traditional Chinese Medicine, Keelung Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Martin Hsiu-Chu Lin
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi Branch, 6, Sec. West, Chai-Pu Road, Pu-Tz City, Chia-Yi 61363, Taiwan;
| | - Jen-Tsung Yang
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi Branch, 6, Sec. West, Chai-Pu Road, Pu-Tz City, Chia-Yi 61363, Taiwan;
- College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
| |
Collapse
|
4
|
Zhang Y, Yang Y, Xu M, Zheng J, Xu Y, Chen G, Guo Q, Tian W, Guo W. The Dual Effects of Reactive Oxygen Species on the Mandibular Alveolar Bone Formation in SOD1 Knockout Mice: Promotion or Inhibition. Oxid Med Cell Longev 2021; 2021:8847140. [PMID: 33613826 PMCID: PMC7878083 DOI: 10.1155/2021/8847140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 12/14/2020] [Accepted: 01/15/2021] [Indexed: 02/05/2023]
Abstract
The status of reactive oxygen species (ROS) correlates closely with the normal development of the oral and maxillofacial tissues. Oxidative stress caused by ROS accumulation not only affects the development of enamel and dentin but also causes pathological changes in periodontal tissues (periodontal ligament and alveolar bone) that surround the root of the tooth. Although previous studies have shown that ROS accumulation plays a pathologic role in some oral and maxillofacial tissues, the effects of ROS on alveolar bone development remain unclear. In this study, we focused on mandibular alveolar bone development of mice deficient in superoxide dismutase1 (SOD1). Analyses were performed using microcomputerized tomography (micro-CT), TRAP staining, immunohistochemical (IHC) staining, and enzyme-linked immunosorbent assay (ELISA). We found for the first time that slightly higher ROS in mandibular alveolar bone of SOD1(-/-) mice at early ages (2-4 months) caused a distinct enlargement in bone size and increased bone volume fraction (BV/TV), trabecular thickness (Tb.Th), and expression of alkaline phosphatase (ALP), Runt-related transcription factor 2 (Runx2), and osteopontin (OPN). With ROS accumulation to oxidative stress level, increased trabecular bone separation (Tb.Sp) and decreased expression of ALP, Runx2, and OPN were found in SOD1(-/-) mice at 6 months. Additionally, dosing with N-acetylcysteine (NAC) effectively mitigated bone loss and normalized expression of ALP, Runx2, and OPN. These results indicate that redox imbalance caused by SOD1 deficiency has dual effects (promotion or inhibition) on mandibular alveolar bone development, which is closely related to the concentration of ROS and the stage of growth. We present a valuable model here for investigating the effects of ROS on mandibular alveolar bone formation and highlight important roles of ROS in regulating tissue development and pathological states, illustrating the complexity of the redox signal.
Collapse
Affiliation(s)
- Yunyan Zhang
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuzhi Yang
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Mingxue Xu
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jingwen Zheng
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuchan Xu
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Guoqing Chen
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qiang Guo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weidong Tian
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weihua Guo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| |
Collapse
|
5
|
Kim JW, Yang BE, Hong SJ, Choi HG, Byeon SJ, Lim HK, Chung SM, Lee JH, Byun SH. Bone Regeneration Capability of 3D Printed Ceramic Scaffolds. Int J Mol Sci 2020; 21:ijms21144837. [PMID: 32650589 PMCID: PMC7402304 DOI: 10.3390/ijms21144837] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 01/01/2023] Open
Abstract
In this study, we evaluated the bone regenerative capability of a customizable hydroxyapatite (HA) and tricalcium phosphate (TCP) scaffold using a digital light processing (DLP)-type 3D printing system. Twelve healthy adult male beagle dogs were the study subjects. A total of 48 defects were created, with two defects on each side of the mandible in all the dogs. The defect sites in the negative control group (sixteen defects) were left untreated (the NS group), whereas those in the positive control group (sixteen defects) were filled with a particle-type substitute (the PS group). The defect sites in the experimental groups (sixteen defects) were filled with a 3D printed substitute (the 3DS group). Six dogs each were exterminated after healing periods of 4 and 8 weeks. Radiological and histomorphometrical evaluations were then performed. None of the groups showed any specific problems. In radiological evaluation, there was a significant difference in the amount of new bone formation after 4 weeks (p < 0.05) between the PS and 3DS groups. For both of the evaluations, the difference in the total amount of bone after 8 weeks was statistically significant (p < 0.05). There was no statistically significant difference in new bone between the PS and 3DS groups in both evaluations after 8 weeks (p > 0.05). The proposed HA/TCP scaffold without polymers, obtained using the DLP-type 3D printing system, can be applied for bone regeneration. The 3D printing of a HA/TCP scaffold without polymers can be used for fabricating customized bone grafting substitutes.
Collapse
Affiliation(s)
- Ju-Won Kim
- Department of Oral and Maxillofacial Surgery, Dentistry, Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea; (J.-W.K.); (B.-E.Y.)
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Korea
| | - Byoung-Eun Yang
- Department of Oral and Maxillofacial Surgery, Dentistry, Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea; (J.-W.K.); (B.-E.Y.)
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Korea
| | - Seok-Jin Hong
- Department of Otorhinolaryngology-Head & Neck Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Dongtan 18450, Korea;
| | - Hyo-Geun Choi
- Department of Otorhinolaryngology-Head & Neck Surgery, Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea;
| | - Sun-Ju Byeon
- Department of Pathology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Dongtan 18450, Korea;
| | - Ho-Kyung Lim
- Department of Oral and Maxillofacial Surgery, Dentistry, Korea University Guro Hospital, Seoul 08308, Korea;
| | | | - Jong-Ho Lee
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul 03080, Korea;
| | - Soo-Hwan Byun
- Department of Oral and Maxillofacial Surgery, Dentistry, Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea; (J.-W.K.); (B.-E.Y.)
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Korea
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul 03080, Korea;
- Correspondence: ; Tel.: +82-10-8787-2640
| |
Collapse
|
6
|
Zhang W, Shi W, Wu S, Kuss M, Jiang X, Untrauer JB, Reid SP, Duan B. 3D printed composite scaffolds with dual small molecule delivery for mandibular bone regeneration. Biofabrication 2020; 12:035020. [PMID: 32369796 PMCID: PMC8059098 DOI: 10.1088/1758-5090/ab906e] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Functional reconstruction of craniomaxillofacial defects is challenging, especially for the patients who suffer from traumatic injury, cranioplasty, and oncologic surgery. Three-dimensional (3D) printing/bioprinting technologies provide a promising tool to fabricate bone tissue engineering constructs with complex architectures and bioactive components. In this study, we implemented multi-material 3D printing to fabricate 3D printed PCL/hydrogel composite scaffolds loaded with dual bioactive small molecules (i.e. resveratrol and strontium ranelate). The incorporated small molecules are expected to target several types of bone cells. We systematically studied the scaffold morphologies and small molecule release profiles. We then investigated the effects of the released small molecules from the drug loaded scaffolds on the behavior and differentiation of mesenchymal stem cells (MSCs), monocyte-derived osteoclasts, and endothelial cells. The 3D printed scaffolds, with and without small molecules, were further implanted into a rat model with a critical-sized mandibular bone defect. We found that the bone scaffolds containing the dual small molecules had combinational advantages in enhancing angiogenesis and inhibiting osteoclast activities, and they synergistically promoted MSC osteogenic differentiation. The dual drug loaded scaffolds also significantly promoted in vivo mandibular bone formation after 8 week implantation. This work presents a 3D printing strategy to fabricate engineered bone constructs, which can likely be used as off-the-shelf products to promote craniomaxillofacial regeneration.
Collapse
Affiliation(s)
- Wenhai Zhang
- First Hip Department of Orthopedics, Tianjin Hospital, Tianjin, 300211, China
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Wen Shi
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Shaohua Wu
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- College of Textiles & Clothing; Collaborative Innovation Center of Marine Biomass Fibers, Qingdao University, Qingdao, China
| | - Mitchell Kuss
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Xiping Jiang
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- College of Medicine, Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jason B Untrauer
- Division of Oral & Maxillofacial Surgery, Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - St Patrick Reid
- College of Medicine, Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Mechanical and Materials Engineering, University of Nebraska- Lincoln, Lincoln, NE, USA
| |
Collapse
|
7
|
Matz DK, Chuck J, Hosmer RJ, Piper HC, Link JE, Fitzgerald SD, Steibel JP, Bursian SJ. Induction of maxillary and mandibular squamous epithelial cell proliferation in mink (Neovison vison) by β-naphthoflavone. Environ Toxicol Chem 2019; 38:460-463. [PMID: 30525228 DOI: 10.1002/etc.4329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 08/27/2018] [Accepted: 12/03/2018] [Indexed: 06/09/2023]
Abstract
A jaw lesion reported in mink exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and TCDD-like chemicals is considered a potential indicator of exposure to these chemicals. Many of the effects of TCDD-like chemicals are induced through interaction with the aryl hydrocarbon receptor. The present study indicates that mink dosed with β-naphthoflavone, which is an aryl hydrocarbon receptor ligand but not a TCDD-like chemical, also develop the lesion. Environ Toxicol Chem 2019;38:460-463. © 2018 SETAC.
Collapse
Affiliation(s)
- Danielle K Matz
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing Michigan, USA
| | - Joanna Chuck
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA
| | - Robin J Hosmer
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA
| | - Hannah C Piper
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA
| | - Jane E Link
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA
| | - Scott D Fitzgerald
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan, USA
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, Michigan, USA
| | - Juan P Steibel
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA
| | - Steven J Bursian
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA
| |
Collapse
|
8
|
Balanta-Melo J, Toro-Ibacache V, Kupczik K, Buvinic S. Mandibular Bone Loss after Masticatory Muscles Intervention with Botulinum Toxin: An Approach from Basic Research to Clinical Findings. Toxins (Basel) 2019; 11:toxins11020084. [PMID: 30717172 PMCID: PMC6409568 DOI: 10.3390/toxins11020084] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/23/2019] [Accepted: 01/28/2019] [Indexed: 12/14/2022] Open
Abstract
The injection of botulinum toxin type A (BoNT/A) in the masticatory muscles, to cause its temporary paralysis, is a widely used intervention for clinical disorders such as oromandibular dystonia, sleep bruxism, and aesthetics (i.e., masseteric hypertrophy). Considering that muscle contraction is required for mechano-transduction to maintain bone homeostasis, it is relevant to address the bone adverse effects associated with muscle condition after this intervention. Our aim is to condense the current and relevant literature about mandibular bone loss in fully mature mammals after BoNT/A intervention in the masticatory muscles. Here, we compile evidence from animal models (mice, rats, and rabbits) to clinical studies, demonstrating that BoNT/A-induced masticatory muscle atrophy promotes mandibular bone loss. Mandibular bone-related adverse effects involve cellular and metabolic changes, microstructure degradation, and morphological alterations. While bone loss has been detected at the mandibular condyle or alveolar bone, cellular and molecular mechanisms involved in this process must still be elucidated. Further basic research could provide evidence for designing strategies to control the undesired effects on bone during the therapeutic use of BoNT/A. However, in the meantime, we consider it essential that patients treated with BoNT/A in the masticatory muscles be warned about a putative collateral mandibular bone damage.
Collapse
Affiliation(s)
- Julián Balanta-Melo
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago 8380492, Chile.
- School of Dentistry, Universidad del Valle, Cali 760043, Colombia.
- Max Planck Weizmann Center for Integrative Archaeology and Anthropology, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany.
| | - Viviana Toro-Ibacache
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago 8380492, Chile.
- Center for Quantitative Analysis in Dental Anthropology, Faculty of Dentistry, Universidad de Chile, Santiago 8380492, Chile.
- Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany.
| | - Kornelius Kupczik
- Max Planck Weizmann Center for Integrative Archaeology and Anthropology, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany.
- Center for Quantitative Analysis in Dental Anthropology, Faculty of Dentistry, Universidad de Chile, Santiago 8380492, Chile.
| | - Sonja Buvinic
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago 8380492, Chile.
- Center for Exercise, Metabolism and Cancer Studies CEMC2016, Faculty of Medicine, Universidad de Chile, Independencia 8380453, Chile.
| |
Collapse
|
9
|
Bradley MM, Perra M, Ahlstrøm Ø, Jenssen BM, Jørgensen EH, Fuglei E, Muir DCG, Sonne C. Mandibular shape in farmed Arctic foxes (Vulpes lagopus) exposed to persistent organic pollutants. Sci Total Environ 2019; 646:1063-1068. [PMID: 30235592 DOI: 10.1016/j.scitotenv.2018.07.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 06/08/2023]
Abstract
We investigated if dietary exposure to persistent organic pollutants (POPs) affect mandibular asymmetry and periodontal disease in paired male-siblings of Arctic foxes (Vulpes lagopus). During ontogeny, one group of siblings was exposed to the complexed POP mixture in naturally contaminated minke whale (Balaenoptere acutorostarta) blubber (n = 10), while another group was given wet feed based on pig (Sus scrofa) fat as a control (n = 11). The ∑POP concentrations were 802 ng/g ww in the whale-based feed compared to 24 ng/g ww in the control diet. We conducted a two-dimensional geometric morphometric (GM) analysis of mandibular shape and asymmetry in the foxes and compared the two groups. The analyses showed that directional asymmetry was higher than fluctuating asymmetry in both groups and that mandibular shape differed significantly between the exposed and control group based on discriminant function analysis (T2 = 58.52, p = 0.04, 1000 permutations). We also found a non-significantly higher incidence of periodontal disease (two-way ANOVA: p = 0.43) and greater severity of sub-canine alveolar bone deterioration similar to periodontitis (two-way ANOVA: p = 0.3) in the POP-exposed group. Based on these results, it is possible that dietary exposure to a complexed POP mixture lead to changes in jaw morphology in Arctic foxes. This study suggests that extrinsic factors, such as dietary exposure to POPs, may affect mandibular shape and health in a way that could be harmful to wild Arctic populations. Therefore, further studies using GM analysis as an alternative to traditional morphometric methods should be conducted for wild Arctic fox populations exposed to environmental contaminants.
Collapse
Affiliation(s)
- Madison M Bradley
- Department of Archaeology and Anthropology, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada.
| | - Megan Perra
- Independent Researcher, 97231 Portland, OR, USA
| | - Øystein Ahlstrøm
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, NO-1433 Ås, Norway.
| | - Bjørn M Jenssen
- Department of Biology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; Department of Arctic Technology, The University Centre in Svalbard, PO Box 156, NO-9171 Longyearbyen, Norway; Aarhus University, Faculty of Science and Technology, Department of Bioscience, Arctic Research Centre, P.O. Box 358, DK-4000 Roskilde, Denmark.
| | - Even H Jørgensen
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, N, NO-9037 Tromsø, Norway.
| | - Eva Fuglei
- Norwegian Polar Institute, Fram Centre, NO-9296 Tromsø, Norway.
| | - Derek C G Muir
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, Burlington L7S 1A1, ON, Canada.
| | - Christian Sonne
- Aarhus University, Faculty of Science and Technology, Department of Bioscience, Arctic Research Centre, P.O. Box 358, DK-4000 Roskilde, Denmark.
| |
Collapse
|
10
|
Yokota H, Taguchi Y, Tanaka Y, Uchiyama M, Kondo M, Tsuruda Y, Suzuki T, Eguchi S. Chronic exposure to diclofenac induces delayed mandibular defects in medaka (Oryzias latipes) in a sex-dependent manner. Chemosphere 2018; 210:139-146. [PMID: 29986219 DOI: 10.1016/j.chemosphere.2018.07.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/18/2018] [Accepted: 07/03/2018] [Indexed: 06/08/2023]
Abstract
Diclofenac is widely distributed in freshwater environments. To support a robust aquatic risk assessment, medaka (Oryzias latipes) were exposed to diclofenac at sublethal concentrations of 0.608, 2.15, 7.29, 26.5, and 94.8 μg/L (as mean measured concentrations) from fertilized eggs to 90-day posthatch. Except for the induction of mandibular defects, no deleterious effects were observed on hatching success and time to hatching at the embryonic stage, or on posthatch mortality, growth in hatched larvae and juveniles, and no abnormal behavior was observed. After 40-day posthatch, mandibular defects in the fish were observed at a concentration of 7.29 μg/L and above. Cumulatively, a morphological examination showed that 4% of the fish in the 7.29 μg/L treatment, 20% in the 26.5 μg/L treatment, and 38% in the 94.8 μg/L treatment exhibited mandibular defects, and the sex ratio of fish with mandibular defects was skewed toward males. These results suggest that diclofenac affects bone remodeling in the lower jaw of medaka after puberty in a sex-dependent manner. The lowest observed-effect concentration and no observed-effect concentration of diclofenac for mandibular dysmorphism through the partial life cycle exposure of the medaka were 26.5 and 7.29 μg/L, respectively.
Collapse
Affiliation(s)
- Hirofumi Yokota
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan.
| | - Yuri Taguchi
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan
| | - Yuka Tanaka
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan
| | - Mami Uchiyama
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan
| | - Mizuki Kondo
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan
| | - Yukinari Tsuruda
- Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-0053, Japan
| | - Tomoko Suzuki
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan
| | - Sayaka Eguchi
- Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 662-8505, Japan
| |
Collapse
|
11
|
Interlandi V, Fontanetti PA, Ponce RH, Gallará RV, Centeno VA. Chronic Exposure to Fluoride During Gestation and Lactation Increases Mandibular Bone Volume of Suckling Rats. Biol Trace Elem Res 2018; 185:395-403. [PMID: 29411324 DOI: 10.1007/s12011-018-1258-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/24/2018] [Indexed: 10/18/2022]
Abstract
We aimed to investigate the effect of maternal exposure to NaF on mandibular bone microarchitecture and phosphocalcic plasma parameters of the offspring. For this purpose, 10-, 15-, and 21-day-old pups (n = 6-8 per group) from two groups of mothers, control and NaF 50mg/L treated dams, were used. Plasma calcium (Ca) and phosphorus (P) levels and alkaline phosphatase activity (ALP) were measured. Fluoride concentration (F-) in bone and in stomach content was measured using potentiometry after isothermal distillation. Morphometric, histological, and histomorphometric analyses of the jaw bones were performed. Plasma Ca and P levels and ALP activity increased in 10-day and decreased in 21-day-old pups from NaF-treated mothers. Fluoride concentration in stomach content samples of 15- and 21-day-old nursing pups from mothers exposed to NaF in their drinking water was higher compared to that observed in control dam offspring. Mandibular F- content was higher in 21-day-old pups born to F--exposed dams compared to those observed in age-matched control pups. Mandibular area increased in 21-day-old pups born to treated mothers as compared to controls. Mandibular bone volume BV/TV (%) was higher in offspring from NaF-exposed dams than in controls at all the studied times. The increase in bone volume after exposure to F- was concomitant with the increase in trabecular thickness and the decrease in trabecular separation. Altogether, our results showed that exposure to NaF during gestation and lactation increased mandibular area and bone volume of pups, with concomitant changes in phosphocalcic parameters associated with the bone modeling process.
Collapse
Affiliation(s)
- Victoria Interlandi
- Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra "A" de Química Biológica. Pabellón Argentina, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Pablo A Fontanetti
- Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra "A" de Química Biológica. Pabellón Argentina, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Rubén H Ponce
- Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra "A" de Química Biológica. Pabellón Argentina, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Raquel V Gallará
- Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra "A" de Química Biológica. Pabellón Argentina, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Viviana A Centeno
- Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra "A" de Química Biológica. Pabellón Argentina, Ciudad Universitaria, 5000, Córdoba, Argentina.
| |
Collapse
|
12
|
Wang S, Ye L, Li M, Zhan H, Ye R, Li Y, Zhao Z. Effects of growth hormone and functional appliance on mandibular growth in an adolescent rat model. Angle Orthod 2018; 88:624-631. [PMID: 29708397 DOI: 10.2319/120417-829.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVES To investigate the individual and synergistic effects of growth hormone (GH) and functional appliance (FA) on mandibular growth in an adolescent rat model. MATERIALS AND METHODS Forty adolescent (6-week-old) female Wistar rats were randomly divided into four groups (10 rats in each group). The control group received a sham treatment (intra-abdominal injection of phosphate-buffered saline), the GH group received an intra-abdominal injection of recombinant human growth hormone, the FA group was treated with a mandibular advancement device, and the GH+FA group received both the GH and FA treatments. The amount of mandibular growth in each group was measured quantitatively using cone-bean computed tomography. The growth of condylar cartilage and expression of matrix metalloproteinases-1 and -13 (MMP-1 and MMP-13) and type II and X collagen (Col II and Col X) were assessed using histological staining and immunostaining techniques. RESULTS After 4 weeks, there was significant mandibular growth in the FA group compared with the control group ( P < .05). The GH+FA group had significantly greater mandibular length, thickness of condylar cartilage, and expression of MMP-1, MMP-13, Col II, and Col X in the cartilage than the other groups ( P < .05). The GH+FA group and GH group had significantly greater weight than the FA and control groups ( P < .05). CONCLUSIONS The FA as well as GH+FA stimulated mandibular growth in adolescent rats.
Collapse
|
13
|
Yoshioka Y, Yamachika E, Nakanishi M, Ninomiya T, Nakatsuji K, Matsubara M, Moritani N, Kobayashi Y, Fujii T, Iida S. Molecular alterations of newly formed mandibular bone caused by zoledronate. Int J Oral Maxillofac Surg 2018; 47:1206-1213. [PMID: 29550280 DOI: 10.1016/j.ijom.2018.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 12/07/2017] [Accepted: 02/06/2018] [Indexed: 12/21/2022]
Abstract
Bone quality is defined by structural and material characteristics. Most studies on the mandible have focused on the analysis of structural characteristics, with insufficient investigation of material characteristics. This study tested whether zoledronate affects the material characteristics of newly formed mandibular bone. Thirty-six female Wistar rats were assigned to three groups: sham-ovariectomized rats (SHAM, n=12), ovariectomized rats (OVX, n=12), and ovariectomized rats treated with zoledronate (ZOL, n=12). The left side of the mandibular ramus of all rats was drilled bicortically. Twenty-eight days after surgery, all surviving rats were euthanized and all mandibles were removed. Raman microspectroscopy was performed, and five spectra per specimen of newly formed mandibular bone were analysed. Compared with OVX rats, the mineral/matrix ratio in ZOL rats was significantly increased (5.43±1.88 vs. 7.86±2.05), while crystallinity (0.055±0.002 vs. 0.050±0.002), relative proteoglycan content (0.43±0.10 vs. 0.31±0.05), and collagen structural integrity (1.16±0.21 vs. 0.72±0.06) were significantly decreased. These changes in material characteristics may explain why rats that received zoledronate exhibited peculiar biological phenomena such as bisphosphonate-related osteonecrosis of the jaw.
Collapse
Affiliation(s)
- Y Yoshioka
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Japan
| | - E Yamachika
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Hospital, Okayama City, Japan.
| | - M Nakanishi
- Department of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama City, Japan
| | - T Ninomiya
- Division of Hard Tissue Research, Institute for Oral Science, Matsumoto Dental University, Shiojiri, Nagano, Japan
| | - K Nakatsuji
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Japan
| | - M Matsubara
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Japan
| | - N Moritani
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Japan
| | - Y Kobayashi
- Division of Hard Tissue Research, Institute for Oral Science, Matsumoto Dental University, Shiojiri, Nagano, Japan
| | - T Fujii
- Department of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama City, Japan
| | - S Iida
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Japan
| |
Collapse
|
14
|
Ottria L, Palmieri A, Andreasi Bassi M, Lauritano D, Candotto V, Tagliabue A, Tettamanti L. Clinical applications of Natural Bone Morphoproteins in dentistry: a narrative review. J BIOL REG HOMEOS AG 2018; 32:35-41. [PMID: 29460516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The need to restore bone loss in maxilla and mandible has led to find natural bone substitutes, such as fresh autogenous bone grafts. Fresh autogenous bone grafts (FABGs) have a remarkable capacity to induce new bone formation, a phenomenon called osteoinduction. FABGs are useful in craniomaxillofacial and oral applications to restore bone deficiencies. The isolation of those proteins believed to be responsible for the osteoinductive activity of FABGs, namely Natural Bone Morphogenetic Proteins (NBMPs), led to a new era in bone regeneration. NBMPs have been approved for use in specific oral and maxillofacial applications. Clinical trials and studies of oral and craniofacial surgery have indicated that NBMPs can promote bone repair. Information about the biology, chemistry, and actions of NBMPs has called into question whether NBMPs would result in clinically useful bone induction and morphogenesis. Preclinical and specific clinical trials have indicated the efficacy of NBMPs either combined with autograft or compared with an autograft alone. In light of questions about potency and safety of NBMPs, however, additional high-level evidence is needed for specific clinical indications and appropriate patient populations that would benefit from their use.
Collapse
Affiliation(s)
- L Ottria
- Dental School, Tor Vergata University, Rome, Italy
| | - A Palmieri
- Department Of Experimental, Diagnostic And Specialty Medicine, University Of Bologna, Bologna, Italy
| | | | - D Lauritano
- Department Of Medicine And Surgery, University Of Milano Bicocca, Monza, Italy
| | - V Candotto
- Department Of Biomedical, Surgical And Dental Sciences, University Of Milan, Milan, Italy
| | - A Tagliabue
- Department Of Medicine And Surgery, University Of Insubria, Varese, Italy
| | - L Tettamanti
- Department Of Medicine And Surgery, University Of Insubria, Varese, Italy
| |
Collapse
|
15
|
Abstract
INTRODUCTION The recent finding that shrinkage of key areas of the facial skeleton contributes to the aging appearance of the face has prompted a search for the most appropriate bone-like implant material. Evidence that hydroxyapatite, in granular form, maintains volume in the long term supports its use in the correction of aging, in addition to its use in the correction of inherently deficient areas of the facial skeleton. The biologic response of hydroxyapatite needs to be fully understood for its use to be confidently recommended. MATERIALS AND METHODS Samples of 'living' hydroxyapatite from the anterior maxilla, zygoma, and mandible of 17 patients were analyzed. These were obtained during revision procedures performed between 6 months and 15 years following original placement on the facial skeleton. RESULTS Histology showed that in every case, the individual granules were embedded within a mass of collagen that made up about half of the total implant volume. The collagen mass also contained fine elastin, fibroblasts, lymphocytes, occasional granulomas, and vessels. By 2 years, a new compact bone containing osteoblasts and osteocytes was present in all specimens in the deep (osseous) aspect. Bone progressively replaced the original collagen between the granules with a sharply defined transition at the interface. CONCLUSIONS This study confirmed a two-stage biologic change following onlay placement of hydroxyapatite granules on the facial skeleton, i.e., initial collagen formation with subsequent conversion to bone. This integrates the implant with the host bone which stabilizes the implant position and shape initially and in long term. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors. www.springer.com/00266 .
Collapse
Affiliation(s)
- Richard J Huggins
- The Centre for Facial Plastic Surgery, 109 Mathoura Road, Toorak, Melbourne, VIC, Australia.
| | - Bryan C Mendelson
- The Centre for Facial Plastic Surgery, 109 Mathoura Road, Toorak, Melbourne, VIC, Australia
| |
Collapse
|
16
|
Abstract
Senescence marker protein-30 (SMP30) decreases androgen-independently with aging and is a lactone-hydrolyzing enzyme gluconolactonase (GNL) that is involved in vitamin C biosynthesis. In the present study, bone properties of SMP30/GNL knockout (KO) mice with deficiency in vitamin C synthesis were investigated to reveal the effects of SMP30/GNL and exogenous vitamin C supplementation on bone formation. Mineral content (BMC) and mineral density (BMD) of the mandible and femur of SMP30/GNL KO and wild-type mice at 2 and 3 months of age with or without vitamin C supplementation were measured by dual-energy X-ray absorptiometry. Body and bone weight of both age groups decreased and became significantly lower than those of wild-type mice. The bones of SMP30/GNL KO mice were rough and porous, with BMC and BMD significantly below wild-type. Oral supplementation with vitamin C eliminated differences in body weight, bone weight, BMC, and BMD between SMP30/GNL KO and wild-type mice at each age. These results indicate that bone degeneration in SMP30/GNL KO mice was caused by lack of vitamin C, and that this mouse strain is an appropriate model for bone metabolism in humans, which have no ability to synthesize vitamin C.
Collapse
Affiliation(s)
- K Nishijima
- Kazutoshi Nishijima, Animal Research Laboratory, Bioscience Education-Research Center, Akita University, 1-1-1 Hondo, Akita 101-8543, Japan, E-mail:
| | | | | | | | | | | | | |
Collapse
|
17
|
Bhattarai G, Kook SH, Kim JH, Poudel SB, Lim SS, Seo YK, Lee JC. COMP-Ang1 prevents periodontitic damages and enhances mandible bone growth in an experimental animal model. Bone 2016; 92:168-179. [PMID: 27612438 DOI: 10.1016/j.bone.2016.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 09/02/2016] [Accepted: 09/05/2016] [Indexed: 12/23/2022]
Abstract
COMP-Ang1, a chimera of angiopoietin-1 (Ang1) and a short coiled-coil domain of cartilage oligomeric matrix protein (COMP), is under consideration as a therapeutic agent enhancing tissue regeneration with increased angiogenesis. However, the effect of COMP-Ang1 on periodontitic tissue damages and the related mechanisms are not yet investigated. We initially explored whether a local delivery of COMP-Ang1 protects lipopolysaccharide (LPS)/ligature-induced periodontal destruction in rats. As the results, μCT and histological analyses revealed that COMP-Ang1 inhibits LPS-mediated degradation of periodontium. COMP-Ang1 also suppressed osteoclast number and the expression of osteoclast-specific and inflammation-related molecules in the inflamed region of periodontitis rats. Implanting a COMP-Ang1-impregnated scaffold into critical-sized mandible bone defects enhanced the amount of bone in the defects with increased expression of bone-specific markers. The addition of COMP-Ang1 prevented significantly osteoclast differentiation and activation in LPS-stimulated RAW264.7 macrophages and inhibited the phosphorylation of c-Jun, mitogen-activated protein kinases, and cAMP response element-binding protein in the cells. On contrary, COMP-Ang1 increased the level of phosphatidylinositol 3-kinase (PI3K) in LPS-exposed macrophages and a pharmacological PI3K inhibitor diminished the anti-osteoclastogenic effect of COMP-Ang1. Similarly, COMP-Ang1 blocked the expression of inflammation-related molecules in LPS-stimulated human periodontal ligament fibroblasts (hPLFs). Further, the COMP-Ang1 enhanced differentiation of hPLFs into osteoblasts by stimulating the expression of bone-specific markers, Tie2, and activator protein-1 subfamily. Collectively, our findings may support the therapeutic potentials of COMP-Ang1 in preventing inflammatory periodontal damages and in stimulating new bone growth.
Collapse
Affiliation(s)
- Govinda Bhattarai
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences (BK21 program) and School of Dentistry, Chonbuk National University, Jeonju 54896, South Korea
| | - Sung-Ho Kook
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences (BK21 program) and School of Dentistry, Chonbuk National University, Jeonju 54896, South Korea; Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, South Korea
| | - Jae-Hwan Kim
- Chonnam National University Dental Hospital, Kwangju 61186, South Korea
| | - Sher Bahadur Poudel
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences (BK21 program) and School of Dentistry, Chonbuk National University, Jeonju 54896, South Korea
| | - Shin-Saeng Lim
- School of Dentistry and Dental Research Institute, Seoul National University, Seoul 08826, South Korea
| | - Young-Kwon Seo
- Research Institute of Biotechnology, Dongguk University, Seoul 04620, South Korea
| | - Jeong-Chae Lee
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences (BK21 program) and School of Dentistry, Chonbuk National University, Jeonju 54896, South Korea; Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, South Korea.
| |
Collapse
|
18
|
Kang SY, Deshpande SS, Zheutlin AR, Donneys A, Rodriguez JJ, Nelson NS, Felice PA, Chepeha DB, Buchman SR. Role of parathyroid hormone in regeneration of irradiated bone in a murine model of mandibular distraction osteogenesis. Head Neck 2016; 39:464-470. [PMID: 27779806 DOI: 10.1002/hed.24612] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/04/2016] [Accepted: 09/05/2016] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND The purpose of this study was to measure the histologic and histomorphometric effects of parathyroid hormone (PTH) treatment on irradiated bone undergoing distraction osteogenesis (DO). METHODS Thirty-four rats were divided into 3 groups. The control group underwent DO and the radiation control group underwent radiotherapy (RT) before DO. The PTH group underwent RT and received PTH during DO. Quantitative histology and histomorphometry were performed. RESULTS RT resulted in a depletion of osteocytes and increase in empty lacunae. Treatment with PTH resulted in an increase in osteocyte counts and decrease in empty lacunae (p < .05), restoring osteocytes to levels seen in nonradiated bone (p = .121). RT decreased bone volume to tissue volume (BV-TV) ratio and increased osteoid volume to tissue volume (OV-TV) ratio, signifying increased immature bone formation. PTH treatment restored OV-TV ratio to that observed in nonradiated bone. CONCLUSION PTH treatment of irradiated bone enhanced bone regeneration and restored osteocyte counts and OV-TV ratio to levels comparable to nonradiated bone. © 2016 Wiley Periodicals, Inc. Head Neck 39: 464-470, 2017.
Collapse
Affiliation(s)
- Stephen Y Kang
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Otolaryngology-Head and Neck Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Sagar S Deshpande
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
| | - Alexander R Zheutlin
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
| | - Alexis Donneys
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
| | - Jose J Rodriguez
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
| | - Noah S Nelson
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
| | - Peter A Felice
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
| | - Douglas B Chepeha
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Steven R Buchman
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, Michigan
- Section of Plastic Surgery, University of Michigan Health System, Ann Arbor, Michigan
| |
Collapse
|
19
|
Choi SH, Fan D, Hwang MS, Lee HK, Hwang CJ. Effect of growth hormone treatment on craniofacial growth in children: Idiopathic short stature versus growth hormone deficiency. J Formos Med Assoc 2016; 116:313-321. [PMID: 27421175 DOI: 10.1016/j.jfma.2016.05.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/17/2016] [Accepted: 05/26/2016] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND/PURPOSE Few studies have evaluated craniofacial growth in boys and girls with idiopathic short stature (ISS) during growth hormone (GH) treatment. The aim of this study was to evaluate the effect of GH treatment on craniofacial growth in children with ISS, compared with those with growth hormone deficiency (GHD). METHODS This study included 36 children (mean age, 11.3 ± 1.8 years) who were treated with GH consecutively. Lateral cephalograms were analyzed before and 2 years after start of GH treatment. RESULTS There were no significant differences in age and sex between ISS and GHD groups and the reference group from semilongitudinal study (10 boys and 8 girls from each group). Before treatment, girls with ISS showed a skeletal Class II facial profile compared with the GHD and reference groups (p = 0.003). During GH treatment, the amount of maxillary length increased beyond norm in the ISS and GHD groups in boys (p = 0.035) > 3 standard deviation score (SDS). Meanwhile, mandibular ramus height (p = 0.001), corpus length, and total mandibular length (p = 0.007 for both) increased more in girls with ISS than in girls with GHD. Lower and total anterior facial heights increased more in girls with ISS than in girls with GHD (p = 0.021 and p = 0.007, respectively), > 7-11 SDS. CONCLUSION GH should be administered carefully when treating girls with ISS, because GH treatment has great effects on vertical overgrowth of the mandible and can result in longer face.
Collapse
Affiliation(s)
- Sung-Hwan Choi
- Department of Orthodontics, The Institute of Cranial-Facial Deformity, College of Dentistry, Yonsei University, Seoul, South Korea
| | - Dong Fan
- Department of Dentistry, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Mi-Soo Hwang
- Department of Radiology, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Hee-Kyung Lee
- Department of Dentistry, College of Medicine, Yeungnam University, Daegu, South Korea.
| | - Chung-Ju Hwang
- Department of Orthodontics, The Institute of Cranial-Facial Deformity, College of Dentistry, Yonsei University, Seoul, South Korea.
| |
Collapse
|
20
|
Nanci A, Wazen RM, Zalzal SF, Fortin M, Goldberg HA, Hunter GK, Ghitescu DL. A Tracer Study with Systemically and Locally Administered Dinitrophenylated Osteopontin. J Histochem Cytochem 2016; 52:1591-600. [PMID: 15557213 DOI: 10.1369/jhc.4a6452.2004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Osteopontin (OPN), a major non-collagenous matrix protein of bone, is also found in tissue fluids and in the circulation. It is still not clear whether circulating OPN contributes to bone formation. To elucidate this question, rat OPN was tagged with dinitrophenol groups and administered to rats either intravenously or by infusion with an osmotic minipump through a “surgical window” in the bone of the hemimandible. Dinitrophenylated rat albumin (ALB) was used as a control. The presence and distribution of tagged proteins were revealed by immunogold labeling on sections of tibia and alveolar bone. Tagged molecules of OPN were found in mineralization foci, surfaces and interfaces, and matrix accumulations among calcified collagen fibrils. Even though dinitrophenylated ALB was administered at several-fold higher concentrations, it did not accumulate in these sites. These results show that circulating OPN can be incorporated into specific compartments of forming bone and suggest that such molecules may play a more important role than previously suspected.
Collapse
Affiliation(s)
- Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculty of Dentistry, Université de Montréal, PO Box 6128, Station Centre-Ville, Montreal, QC, Canada H3C 3J7.
| | | | | | | | | | | | | |
Collapse
|
21
|
Abstract
OBJECTIVE: To compare mandibular bone regeneration with bone morphogenetic protein-2 (BMP-2) delivered with two carriers: a hyaluronic acid polymer (HY), and a collagen carrier complexed with calcium hydroxyapatite and tricalcium phosphate (collagen/HA/TCP).STUDY DESIGN: Defects were created in the bilateral mandibular bodies of 16 Sprague-Dawley rats. The defects were filled with the HY carrier, the HY carrier loaded with BMP-2, the collagen/HA/TCP carrier, or the collagen/HA/TCP carrier loaded with BMP-2. Animals were euthanatized after 6 weeks, and the hemi-mandibles were analyzed histomorphologically.RESULTS: Specimens containing BMP-2 had significantly larger new bone and marrow volumes than control specimens. Specimens in the hyaluronan/BMP-2 group tended to have larger volumes of new bone and osteoid than collagen/HA/TCP/BMP-2 specimens, though these differences were not statistically significant.CONCLUSION: The HY and collagen/HA/TCP carriers had comparable efficacy for bone healing with BMP-2.SIGNIFICANCE: Bone morphogenetic proteins can be delivered with commercially available alloplasts as osteogenic bone substitutes for the repair of craniofacial bone defects. EBM rating: B-2.
Collapse
Affiliation(s)
- Oneida A Arosarena
- Division of Otolaryngology, Department of Surgery, University of Kentucky Medical Center, 800 Rose Street, Room C236, Lexington, KY 40536-0293, USA.
| | | |
Collapse
|
22
|
Lyakhovskyi VI, Lobahn GA, Gancho OV, Vazhnycha OM, Kolomiyets SV, Jaber VKO. [DYNAMICS OF BACTERIOLOGICAL AND PLANIMETRIC INDICES OF THE WOUND UNDER THE ACTION OF THE SILVER NANOPARTICLES, STABILIZED BY MEXIDOL AND POLYVINYLPYRROLIDONE]. Klin Khir 2016:67-69. [PMID: 27434961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Changes in bacteriological indices through the square of the wound of chemical origin under local impact of the silver nanoparticles (NP), stabilized by 2-ethyl-6-methyl-3-hydroxypyridine succinate (mexidol) and polyvinylpyrrolidone were studied. The wounds of submandibular region were simulated in white rats, using injection of 10% solution of calcium chloride with further opening of necrotic foci and open management of the wound. Beginning from the fifth day, every day the wound was irrigated with liquid, which have contented the stabilized NP of the silver, 0.05% water solution of chlorhexidine or isotonic solution of the the sodium chloride (control). There was established, that the silver NP impact antiseptically and regenerative while the wound treatment, and reduce during 10 days microbial contamination of exudate in 24 times, the wound square--in three times in comparison with original indices. These changes were identical to those while application of chlorhexidine.
Collapse
|
23
|
Affiliation(s)
| | | | - Joël Ferri
- Université Lille Nord de France, Lille, France
| |
Collapse
|
24
|
Abstract
The comparative experimental study of osseous tissue regeneration in the createdforaminous mandibular defects being implanted with bioceramics Kergap T-300 and osteoplastic material Osteopor, as well as justifying the possibility ofusing the developed reparative material in the maxillofacial surgery clinics based on the analysis ofhistomorphological research results for are the paper objectives. 78 nonlinearwhite male rats weighing 240-300 g withforaminous mandibular defects were used as models for studying impact on the reparative osteogenesis processes made by the bonegraft material. Reparative changes in the implantation sites were studied in real time with the help of histological drugs under the optical microscopy. The graft components were the morphometry object calculated at the percentage ratio per the graft space unit in three cuts from each section. In 27.7% cases the rats'mandibular defects repair under the natural environment conditions of osseous tissue regeneration achieved with a blood clot was complicated by purulence, the surgical wound dehiscence with pyorrhea or perimandibular abscess. In other cases regeneration caused the development of heterogeneous graft made of chondroid-fibroblastic and osteoid tissues of different organization levels. The comparative experimental morphological and histomorphometric studies of the bone regeneration involving the replacement of created jaw defects with osteoplastic material Kergap-T alone and- in the combination with the lyophilized biological placenta implant Osteopor proved that the latter speeded up the beginning of active regenerative processes promoting the early defect filling with the neogenic organotypic osseous tissue comprising 52(43-63)[46-58]% and 74(57-85)[64-79]% of the bone graft in 60 and 90 days after the surgical intervention correspondingly (being equal to 24(13-29)[20-28]% i 32(27-38)[30-34]% correspondingly in cases when Kergap-Twas applied. According to the morphometric researchfindings, in cases of Osteopor and Kergap-T application the tabular bone element ofthe graft was equal to 53 (43-60) [46-561% and 15(13-18) [14-16]% correspondingly.
Collapse
|
25
|
Liwei P, Xiaoling W. [Effect of recombinant human parathyroid hormone 1-34 on mandibular distraction osteogenesis in rabbits]. Zhonghua Zheng Xing Wai Ke Za Zhi 2015; 31:450-455. [PMID: 27055326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the effect of recombinant human parathyroid hormone 1-34 [rhPTH(1-34)] on bone regeneration rabbit mandible during distraction osteogenesis (DO). METHODS 40 Japanese white rabbit (weight 2.0-2.5 kg) were randomly divided into control group and groups. The experimental groups were divided inito 12.5, 25 and 50 µg/kg group according to the dosage of rhPTH (1-34) in each group. Each group involved 10 rabbits, and unilateral DO models were established at the right mandible of the rabbits. From the first day of distraction to the day of execution, the rabbits in the experimental groups were injected subcutaneously rhPTH (1-34) of the corresponding dose respectively, and the rabbits in the control group were injected subcutaneously 2% heat inactivated rabbit serum 1 ml respectively.. Five rabbits in each group were executed respectively at 1 week and 3 weeks after completion of distraction, and the specimens of DO were harvested. The gross observation, X-ray examination, and histological study were performed. RESULTS Gross appearance: At the first week of consolidation, the dense and opaque white tissue was seen in the distraction gap of the 50 µg/kg group, and the white translucent tissue was seen in the distraction gaps of the rest groups. At the third week of consolidation, the greyish white tissue was seen in the distraction gap of the control group, while the cartilage-like tissue was seen in the buccal side of the distraction gap of the 12.5 µg/kg group, the color of new-formed tissues was close to that of normal bone tissue in the lingual side. The buccal tissue at the edge of the distraction gap of the 25 µg/kg group fitted together with the primary bone tissue in its two sides. It was difficult to distinguish the boundaries between the distraction gap and the bone tissues in its two sides in the 50 µg/kg group. X-ray findings: At the first week of consolidation, a sparse opaque image was seen in the distraction gap of the 50 µg/kg group, and a low-density image was seen in the distraction gap of the rest groups. At the third week of consolidation, a sparse bone image was seen in the control group, and the edge of the bone was not continuous. With the increase of the dose in the experimental groups, the image of the distraction gap became more and more opaque, and the image of the distraction gap in the 50 µg/kg group was close to that of the normal bone tissue. HISTOLOGICAL FINDINGS: At the first week of consolidation, few osteoblasts were present at the edge of the distraction gap of the control group. A large number of bone cells and bone trabecular were present in the distraction gap of the 12.5 µg/kg group, the network of the bone trabecula was present in the 25 µg/kg group, and a few new bones were found in the 50 µg/kg group. At the third week of consolidation, the network of the trabecular bone was present in the distraction gap of the control group, while the network of the bone trabecula was present in the 12.5 µg/kg group, a lot of bone-like tissues in the 25 µg/kg group, and near-mature bone in the 50 µg/kg group. CONCLUSIONS rhPTH(1-34) can promote the formation of new bone in the distracted gap during mandibular DO in rabbits.
Collapse
|
26
|
Mauprivez C, Bataille C, Baroukh B, Llorens A, Lesieur J, Marie PJ, Saffar JL, Biosse Duplan M, Cherruau M. Periosteum Metabolism and Nerve Fiber Positioning Depend on Interactions between Osteoblasts and Peripheral Innervation in Rat Mandible. PLoS One 2015; 10:e0140848. [PMID: 26509533 PMCID: PMC4624798 DOI: 10.1371/journal.pone.0140848] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 10/01/2015] [Indexed: 12/16/2022] Open
Abstract
The sympathetic nervous system controls bone remodeling by regulating bone formation and resorption. How nerves and bone cells influence each other remains elusive. Here we modulated the content or activity of the neuropeptide Vasoactive Intestinal Peptide to investigate nerve-bone cell interplays in the mandible periosteum by assessing factors involved in nerve and bone behaviors. Young adult rats were chemically sympathectomized or treated with Vasoactive Intestinal Peptide or Vasoactive Intestinal Peptide10-28, a receptor antagonist. Sympathectomy depleted the osteogenic layer of the periosteum in neurotrophic proNerve Growth Factor and neurorepulsive semaphorin3a; sensory Calcitonin-Gene Related Peptide-positive fibers invaded this layer physiologically devoid of sensory fibers. In the periosteum non-osteogenic layer, sympathectomy activated mast cells to release mature Nerve Growth Factor while Calcitonin-Gene Related Peptide-positive fibers increased. Vasoactive Intestinal Peptide treatment reversed sympathectomy effects. Treating intact animals with Vasoactive Intestinal Peptide increased proNerve Growth Factor expression and stabilized mast cells. Vasoactive Intestinal Peptide10-28 treatment mimicked sympathectomy effects. Our data suggest that sympathetic Vasoactive Intestinal Peptide modulate the interactions between nervous fibers and bone cells by tuning expressions by osteogenic cells of factors responsible for mandible periosteum maintenance while osteogenic cells keep nervous fibers at a distance from the bone surface.
Collapse
Affiliation(s)
- Cédric Mauprivez
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
- Assistance Publique – Hôpitaux de Paris, Avenue Victoria, Paris, France
| | - Caroline Bataille
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
- Assistance Publique – Hôpitaux de Paris, Avenue Victoria, Paris, France
| | - Brigitte Baroukh
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
| | - Annie Llorens
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
| | - Julie Lesieur
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
| | - Pierre J. Marie
- UMR-1132 INSERM and Université Paris Diderot, Sorbonne Paris Cité, Hôpital Lariboisière, Paris, France
| | - Jean-Louis Saffar
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
- Assistance Publique – Hôpitaux de Paris, Avenue Victoria, Paris, France
- * E-mail:
| | - Martin Biosse Duplan
- Assistance Publique – Hôpitaux de Paris, Avenue Victoria, Paris, France
- INSERM U1163, Université Paris Descartes, Sorbonne Paris Cité, Institut Imagine, Hôpital Necker-Enfants Malades, Paris, France
| | - Marc Cherruau
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux 92120, Montrouge, France
- Assistance Publique – Hôpitaux de Paris, Avenue Victoria, Paris, France
| |
Collapse
|
27
|
Lohse N, Moser N, Backhaus S, Annen T, Epple M, Schliephake H. Continuous delivery of rhBMP2 and rhVEGF165 at a certain ratio enhances bone formation in mandibular defects over the delivery of rhBMP2 alone--An experimental study in rats. J Control Release 2015; 220:201-209. [PMID: 26485046 DOI: 10.1016/j.jconrel.2015.10.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/03/2015] [Accepted: 10/16/2015] [Indexed: 11/18/2022]
Abstract
The aim of the present study was to test the hypothesis that different amounts of vascular endothelial growth factor and bone morphogenic protein differentially affect bone formation when applied for repair of non-healing defects in the rat mandible. Porous composite PDLLA/CaCO3 carriers were fabricated as slow release carriers and loaded with rhBMP2 and rhVEGF165 in 10 different dosage combinations using gas foaming with supercritical carbon dioxide. They were implanted in non-healing defects of the mandibles of 132 adult Wistar rats with additional lateral augmentation. Bone formation was assessed both radiographically (bone volume) and by histomorphometry (bone density). The use of carriers with a ratio of delivery of VEGF/BMP between 0.7 and 1.2 was significantly related to the occurrence of significant increases in radiographic bone volume and/or histologic bone density compared to the use of carriers with a ratio of delivery of ≤ 0.5 when all intervals and all outcome parameters were considered. Moreover, simultaneous delivery at this ratio helped to "save" rhBMP2 as both bone volume and bone density after 13 weeks were reached/surpassed using half the dosage required for rhBMP2 alone. It is concluded, that the combined delivery of rhVEGF165 and rhBMP2 for repair of critical size mandibular defects can significantly enhance volume and density of bone formation over delivery of rhBMP2 alone. It appears from the present results that continuous simultaneous delivery of rhVEGF165 and rhBMP2 at a ratio of approximately 1 is favourable for the enhancement of bone formation.
Collapse
Affiliation(s)
- N Lohse
- Dept. of Oral and Maxillofacial Surgery, George-Augusta-University, Göttingen, Germany
| | - N Moser
- Dept. of Oral and Maxillofacial Surgery, George-Augusta-University, Göttingen, Germany
| | - S Backhaus
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany
| | - T Annen
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany
| | - M Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany
| | - H Schliephake
- Dept. of Oral and Maxillofacial Surgery, George-Augusta-University, Göttingen, Germany.
| |
Collapse
|
28
|
Huang Y, Miao D, Chen N. [The treatment effects and mechanisms of pyrroloquinoline quinone on defective teeth and mandible in Bmi-1 knockout mice]. Zhonghua Kou Qiang Yi Xue Za Zhi 2015; 50:496-502. [PMID: 26702669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To investigate the treatment effects and mechanisms of pyrroloquinoline quinine(PQQ) on defective teeth and mandible in Bmi-1 knockout mice. METHODS Male and female Bmi1(+/-) mice were paired with each other from the same nest. At the age of 7 weeks, the mice were divided into three groups, the wild type mice received normal diet(10 mice, WT group), Bmi1(-/-) mice received normal diet (10 mice, BKO group), and the Bmi1(-/-) mice received normal diet and PQQ diet(10 mice, BKO+PQQ group). X-ray and micro- CT were used to detect mandible and dental size and bone mineral density. HE staining, histochemical and immunohistochemical methods were respectively used to detect alveolar bone thickness of cortical bone, predentin thickness of mandibular first molar, mandibular osteoblast number and osteoclast number. Flow cytometry was used to detect reactive oxygen species(ROS) levels of various organs(femur, thymus and liver). The data were statistically analyzed with one-way ANOVA and t test. RESULTS Compared with BKO mice, BKO+PQQ mice partially rescued total body phenotype, increased body weight and prolonged survival time. X- ray and micro- CT showed the size of the mandible and teeth and bone mineral density of PQQ+BKO mice increased compared with BKO mice. In PQQ+BKO mice, mandibular alveolar bone cortical thickness [(68.65 ± 0.25) µm] was significantly different from that in BKO mice [(42.45 ± 0.35) µm] (P<0.01). There was significant difference in predentin thickness of mandibular first molar between PQQ+BKO mice [(4.25 ± 0.15) µm] and BKO mice [(31.55 ± 0.35) µm] (P<0.001). The number of osteoblasts in the mandible of BKO+PQQ mice [(38.45 ± 0.25) cell/mm³] was significantly higher than that in the BKO mice [(18.15 ± 0.55) cell/mm³] (P<0.01). However, the number of osteoclasts in the BKO+PQQ mice [(9.45 ± 0.25) cell/mm³] was significantly lower than that in the BKO group [(14.25 ± 0.35) cell/mm³] (P<0.01). Compared with the BKO group, ROS levels of the femur, thymus and liver in the BKO+PQQ mice were significantly decreased (P<0.01). CONCLUSIONS The results indicate that PQQ may have treatment effects on defective teeth and mandible through promoting osteoblast bone formation and reducing osteoclast bone resorption, scavenging ROS and reducing DNA damage.
Collapse
Affiliation(s)
- Yuanqing Huang
- Department of Stomatology, Hunan University of Medicine, Huaihua Hunan 418000, China;
| | | | | |
Collapse
|
29
|
Howie RN, Borke JL, Kurago Z, Daoudi A, Cray J, Zakhary IE, Brown TL, Raley JN, Tran LT, Messer R, Medani F, Elsalanty ME. A Model for Osteonecrosis of the Jaw with Zoledronate Treatment following Repeated Major Trauma. PLoS One 2015; 10:e0132520. [PMID: 26186665 PMCID: PMC4505856 DOI: 10.1371/journal.pone.0132520] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 06/15/2015] [Indexed: 11/19/2022] Open
Abstract
This study aims to develop a reproducible rat model for post-traumatic bisphosphonate-related osteonecrosis of the jaw (BRONJ). In our previous studies using dental extraction as an inducing factor, only 30%-60% of zoledronate-treated animals fulfilled the definition of clinical BRONJ. We modified the zoledronate regimen and introduced repeated surgical extraction to illicit quantifiable BRONJ in all animals. Eighty retired-breeder female Sprague-Dawley rats were divided between the treatment (i.v. zoledronate; 80 μg/kg/week for 13 weeks) and control (saline) groups. On week 13, the left mandibular first molar was surgically extracted, followed by the second molar a week later. Animals were euthanized at 1-week, 2-weeks, and 8-weeks following extraction. The occurrence and severity of BRONJ were scored in each animal based on gross and MicroCT analysis. Parameters of bone formation and osteoclast functions at the extraction site were compared between groups. All zoledronate-treated animals developed a severe case of BRONJ that fulfilled the clinical definition of the condition in humans. Osteoclast attachment continued to be defective eight weeks after stopping the treatment. There were no signs of kidney or liver toxicity. Our data confirmed that repeated surgical extraction (major trauma) by itself consistently precipitated massive bone necrosis in ZA-treated animals, eliminating the need to induce pre-existing infection or comorbidity. These results will be the basis for further studies examining the in-vivo pathogenesis and prevention of BRONJ.
Collapse
Affiliation(s)
- R. Nicole Howie
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - James L. Borke
- College of Dental Medicine, Western University of Health Sciences, Pomona, California, United States of America
| | - Zoya Kurago
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Asma Daoudi
- College of Science and Mathematics, Georgia Regents University, Augusta, Georgia, United States of America
| | - James Cray
- College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Ibrahim E. Zakhary
- School of Dentistry, University of Detroit-Mercy, Detroit, Michigan, United States of America
| | - Tara L. Brown
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - J. Nathan Raley
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Loan T. Tran
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Regina Messer
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Fardous Medani
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Mohammed E. Elsalanty
- College of Dental Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| |
Collapse
|
30
|
Maciejewska K, Drzazga Z, Kaszuba M. The changes in bone organic and inorganic matrix in newborn rats after maternal application of antiretroviral agents: Indinavir and zidovudine. Biofactors 2015; 41:198-208. [PMID: 26040542 DOI: 10.1002/biof.1215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 04/29/2015] [Indexed: 01/31/2023]
Abstract
This work presents results concerning influence of indinavir (protease inhibitor, PI(1)) and zidovudine (nucleoside and nucleotide inhibitor of reverse transcriptase, NRTI) administered to pregnant Wistar rat females on organic and mineral constituents of bones and teeth (mandibles, skulls, tibiae, femurs, and incisors) of their offspring at the age of: 7, 14, and 28 days studied by means of induced laser and X-ray fluorescence spectroscopy supported by digital radiography. Influence of indinavir administered to pregnant female rats on bone of their offspring revealed mainly in changes of mineral concentration: lowered Ca concentration and disturbances of trace elements. Zidovudine influenced organic matter more than inorganic matrix which was seen in enhancement of LIF fluorescence. However, there was also an unexpected increase of bone density for rats from zidovudine group, unlike indinavir group, observed. Our studies suggest that studied antiretroviral agents given to pregnant women, may have different destructive impact on bone state of their offspring in the first period of life. Maternal administration of zidovudine may delay development of organic matrix, while indinavir may have adverse effects on inorganic structure.
Collapse
Affiliation(s)
- Karina Maciejewska
- Department of Medical Physics, Institute of Physics, University of Silesia, Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, Chorzow, Poland
| | - Zofia Drzazga
- Department of Medical Physics, Institute of Physics, University of Silesia, Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, Chorzow, Poland
| | | |
Collapse
|
31
|
Felice PA, Gong B, Ahsan S, Deshpande SS, Nelson NS, Donneys A, Tchanque-Fossuo C, Morris MD, Buchman SR. Raman spectroscopy delineates radiation-induced injury and partial rescue by amifostine in bone: a murine mandibular model. J Bone Miner Metab 2015; 33:279-84. [PMID: 25319554 PMCID: PMC4591935 DOI: 10.1007/s00774-014-0599-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Accepted: 05/01/2014] [Indexed: 10/24/2022]
Abstract
Despite its therapeutic role in head and neck cancer, radiation administration degrades the biomechanical properties of bone and can lead to pathologic fracture and osteoradionecrosis. Our laboratories have previously demonstrated that prophylactic amifostine administration preserves the biomechanical properties of irradiated bone and that Raman spectroscopy accurately evaluates bone composition ex vivo. As such, we hypothesize that Raman spectroscopy can offer insight into the temporal and mechanical effects of both irradiation and amifostine administration on bone to potentially predict and even prevent radiation-induced injury. Male Sprague-Dawley rats (350-400 g) were randomized into control, radiation exposure (XRT), and amifostine pre-treatment/radiation exposure groups (AMF-XRT). Irradiated animals received fractionated 70 Gy radiation to the left hemi-mandible, while AMF-XRT animals received amifostine just prior to radiation. Hemi-mandibles were harvested at 18 weeks after radiation, analyzed via Raman spectroscopy, and compared with specimens previously harvested at 8 weeks after radiation. Mineral (ρ958) and collagen (ρ1665) depolarization ratios were significantly lower in XRT specimens than in AMF-XRT and control specimens at both 8 and 18 weeks. amifostine administration resulted in a full return of mineral and collagen depolarization ratios to normal levels at 18 weeks. Raman spectroscopy demonstrates radiation-induced damage to the chemical composition and ultrastructure of bone while amifostine prophylaxis results in a recovery towards normal, native mineral and collagen composition and orientation. These findings have the potential to impact on clinical evaluations and interventions by preventing or detecting radiation-induced injury in patients requiring radiotherapy as part of a treatment regimen.
Collapse
Affiliation(s)
- Peter A. Felice
- Craniofacial Research Laboratory, Plastic Surgery Section, University of Michigan, Ann Arbor, USA. Department of General Surgery, University of South Carolina School of Medicine, Columbia, USA
| | - Bo Gong
- Department of Chemistry, University of Michigan, Ann Arbor, USA
| | - Salman Ahsan
- Craniofacial Research Laboratory, Plastic Surgery Section, University of Michigan, Ann Arbor, USA
| | - Sagar S. Deshpande
- Craniofacial Research Laboratory, Plastic Surgery Section, University of Michigan, Ann Arbor, USA
| | - Noah S. Nelson
- Craniofacial Research Laboratory, Plastic Surgery Section, University of Michigan, Ann Arbor, USA
| | - Alexis Donneys
- Craniofacial Research Laboratory, Plastic Surgery Section, University of Michigan, Ann Arbor, USA
| | | | | | - Steven R. Buchman
- Craniofacial Research Laboratory, Plastic Surgery Section, University of Michigan, Ann Arbor, USA. Pediatric Plastic Surgery Section, University of Michigan Medical School, 4-730 C.S. Mott Children’s Hospital, 1540 E Hospital Drive, Ann Arbor, MI 48109-4215, USA
| |
Collapse
|
32
|
Cabasse C, Marie-Cousin A, Huet A, Sixou JL. Computer-assisted intraosseous anaesthesia for molar and incisor hypomineralisation teeth. A preliminary study. Odontostomatol Trop 2015; 38:5-9. [PMID: 26058304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Anesthetizing MIH (Molar and Incisor Hypomineralisation) teeth is one of the major challenges in paediatric dentistry. Computer-assisted IO injection (CAIO) of 4% articaine with 1:200,000 epinephrine (Alphacaine, Septodont) has been shown to be an efficient way to anesthetize teeth in children. The aim of this study was to assess the efficacy of this method with MIH teeth. This preliminary study was performed using the Quick Sleeper system (Dental Hi Tec, Cholet, France) that allows computer-controlled rotation of the needle to penetrate the bone and computer-controlled injection of the anaesthetic solution. Patients (39) of the department of Paediatric Dentistry were included allowing 46 sessions (including 32 mandibular first permanent molars) to be assessed. CAIO showed efficacy in 93.5% (43/46) of cases. Failures (3) were due to impossibility to reach the spongy bone (1) and to achieve anaesthesia (2). This prospective study confirms that CAIO anaesthesia is a promising method to anesthetize teeth with MIH that could therefore be routinely used by trained practitioners.
Collapse
|
33
|
Guan X, Xiong M, Zeng F, Xu B, Yang L, Guo H, Niu J, Zhang J, Chen C, Pei J, Huang H, Yuan G. Enhancement of osteogenesis and biodegradation control by brushite coating on Mg-Nd-Zn-Zr alloy for mandibular bone repair. ACS Appl Mater Interfaces 2014; 6:21525-33. [PMID: 25343576 DOI: 10.1021/am506543a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
To diminish incongruity between bone regeneration and biodegradation of implant magnesium alloy applied for mandibular bone repair, a brushite coating was deposited on a matrix of a Mg-Nd-Zn-Zr (hereafter, denoted as JDBM) alloy to control the degradation rate of the implant and enhance osteogenesis of the mandible bone. Both in vitro and in vivo evaluations were carried out in the present work. Viability and adhesion assays of rabbit bone marrow mesenchyal stem cells (rBM-MSCs) were applied to determine the biocompatibility of a brushite-coated JDBM alloy. Osteogenic gene expression was characterized by quantitative real-time polymerase chain reaction (RT-PCR). Brushite-coated JDBM screws were implanted into mandible bones of rabbits for 1, 4, and 7 months, respectively, using 316L stainless steel screws as a control group. In vivo biodegradation rate was determined by synchrotron radiation X-ray microtomography, and osteogenesis was observed and evaluated using Van Gieson's picric acid-fuchsin. Both the naked JDBM and brushite-coated JDBM samples revealed adequate biosafety and biocompatibility as bone repair substitutes. In vitro results showed that brushite-coated JDBM considerably induced osteogenic differentiation of rBM-MSCs. And in vivo experiments indicated that brushite-coated JDBM screws presented advantages in osteoconductivity and osteogenesis of mandible bone of rabbits. Degradation rate was suppressed at a lower level at the initial stage of implantation when new bone tissue formed. Brushite, which can enhance oeteogenesis and partly control the degradation rate of an implant, is an appropriate coating for JDBM alloys used for mandibular repair. The Mg-Nd-Zn-Zr alloy with brushite coating possesses great potential for clinical applications for mandibular repair.
Collapse
Affiliation(s)
- Xingmin Guan
- National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Fitzpatrick B, Woods M, Lynch G, Manton D. The effects of denervation and formoterol administration on facial growth. Aust Orthod J 2014; 30:161-168. [PMID: 25549518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To identify and demonstrate possible alterations of skeletal structures which might follow either unilateral surgical denervation of the masseter muscle, unilateral intramuscular injection of formoterol directly into the masseter muscle, or intramuscular formoterol injection after surgical denervation. MATERIALS AND METHODS Male Sprague Dawley rats (N = 16; four weeks of age) were prepared as four groups: 1. surgical sham + saline injection into the masseter muscle (sham); 2. surgical denervation of the masseter muscle only (den.); 3. surgical denervation of the masseter muscle plus intramuscular formoterol injection into the affected muscle (den.+form.); 4. intramuscular formoterol injection into the masseter muscle only (form.). The specimens were submitted for CT examination, the skulls and hemimandibles were photographed and measurements of craniofacial bones were made. RESULTS In this relatively small sample, comparisons between non-experimental and experimental sides revealed differences, both within the groups and for the same measurements between groups, with the den. and den.+form. groups showing the most change. Relative increases in the gonial angle shown in these groups occurred bilaterally, with the change on the experimental side always greater in magnitude than the change on the contralateral side. CONCLUSIONS Surgical denervation of the masseter muscle leads to an alteration in the size and shape of the skeletal structures close to the zygoma and the mandible. The intramuscular injection of formoterol into denervated masseter muscle seems to limit this skeletal alteration after surgical denervation.
Collapse
Affiliation(s)
- Brendan Fitzpatrick
- University of Melbourne, Oral and Maxillofacial Surgery, Royal Melbourne Hospital, Australia
| | | | | | | |
Collapse
|
35
|
Fan J, Park H, Lee MK, Bezouglaia O, Fartash A, Kim J, Aghaloo T, Lee M. Adipose-derived stem cells and BMP-2 delivery in chitosan-based 3D constructs to enhance bone regeneration in a rat mandibular defect model. Tissue Eng Part A 2014; 20:2169-79. [PMID: 24524819 PMCID: PMC4137352 DOI: 10.1089/ten.tea.2013.0523] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 02/10/2014] [Indexed: 12/29/2022] Open
Abstract
Reconstructing segmental mandiblular defects remains a challenge in the clinic. Tissue engineering strategies provide an alternative option to resolve this problem. The objective of the present study was to determine the effects of adipose-derived stem cells (ASCs) and bone morphogenetic proteins-2 (BMP-2) in three-dimensional (3D) scaffolds on mandibular repair in a small animal model. Noggin expression levels in ASCs were downregulated by a lentiviral short hairpin RNA strategy to enhance ASC osteogenesis (ASCs(Nog-)). Chitosan (CH) and chondroitin sulfate (CS), natural polysaccharides, were fabricated into 3D porous scaffolds, which were further modified with apatite coatings for enhanced cellular responses and efficient delivery of BMP-2. The efficacy of 3D apatite-coated CH/CS scaffolds supplemented with ASCs(Nog-) and BMP-2 were evaluated in a rat critical-sized mandibular defect model. After 8 weeks postimplantation, the scaffolds treated with ASCs(Nog-) and BMP-2 significantly promoted rat mandibular regeneration as demonstrated by micro-computerized tomography, histology, and immunohistochemistry, compared with the groups treated with ASCs(Nog-) or BMP-2 alone. These results suggest that our combinatorial strategy of ASCs(Nog-)+BMP-2 in 3D apatite microenvironments can significantly promote mandibular regeneration, and these may provide a potential tissue engineering approach to repair large bony defects.
Collapse
Affiliation(s)
- Jiabing Fan
- Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, California
| | - Hyejin Park
- Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, California
| | - Matthew K. Lee
- Department of Head and Neck Surgery, University of California, Los Angeles, Los Angeles, California
| | - Olga Bezouglaia
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, California
| | - Armita Fartash
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, California
| | - Jinku Kim
- Department of Bio and Chemical Engineering, Hongik University, Sejong, Korea
| | - Tara Aghaloo
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, California
| | - Min Lee
- Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, California
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California
| |
Collapse
|
36
|
Zhang YB, Wang L, Jia S, Du ZJ, Zhao YH, Liu YP, Lei DL. Local injection of substance P increases bony formation during mandibular distraction osteogenesis in rats. Br J Oral Maxillofac Surg 2014; 52:697-702. [PMID: 25069690 DOI: 10.1016/j.bjoms.2014.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 07/07/2014] [Indexed: 11/19/2022]
Abstract
Substance P is a neuropeptide that is distributed in those sensory nerve fibres that innervate the medullary tissues of bone. It is a potent accelerator of proliferation and differentiation of osteoblasts in vitro. However, its capacity for promoting repair of mandibular defects is not known. We have investigated the osteogenic effects of local injections of substance P during mandibular distraction osteogenesis in rats. Twenty Sprague-Dawley rats were randomly assigned to 2 groups (n = 10 in each): substance P 10(-7) mmol/l in normal saline 0.2ml was injected into the experimental group, and saline alone into the controls. The mandibular distraction rate was 0.2mm every 12hours for 10 days. Daily injections of substance P or saline were given during the distraction period. Regeneration of bone was assessed quantitatively on days 15 and 29 using microcomputed tomography (microCT), and histological analysis. The rate of bony union in the group treated with substance P was significantly higher than that in the saline alone group on day 29 (p=0.001) The microCT images and quantitation showed more callus and more mature cortical bone when substance P was given than with control. Histological examination showed that cartilaginous tissues had formed in the middle of the distraction gaps in both groups. Bony bridges were seen only in the substance P group at the final time point (day 29). Injection of substance P into the gap of a rat mandible during mandibular distraction improved formation of good-quality bone and accelerated bony union.
Collapse
Affiliation(s)
- Ya-bo Zhang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China; Department of Stomatology, No.425 Hospital of PLA, Sanya 572000, China
| | - Lei Wang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Sen Jia
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Zhao-jie Du
- Department of Stomatology, No.425 Hospital of PLA, Sanya 572000, China
| | - Ying-hua Zhao
- Department of Prosthodontics, Stomatology Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Yan-pu Liu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
| | - De-lin Lei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
| |
Collapse
|
37
|
Rajaa EB, Mokrane K, Mohamed R, Said B, Ihsane BY. [Osteitis induced by chemotherapy: a case report]. Tunis Med 2014; 92:352-354. [PMID: 25504393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
|
38
|
Rivera MF, Chukkapalli SS, Velsko IM, Lee JY, Bhattacharyya I, Dolce C, Toro EJ, Holliday LS, Kesavalu L. Bis-enoxacin blocks rat alveolar bone resorption from experimental periodontitis. PLoS One 2014; 9:e92119. [PMID: 24638087 PMCID: PMC3956892 DOI: 10.1371/journal.pone.0092119] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 02/17/2014] [Indexed: 12/30/2022] Open
Abstract
Periodontal diseases are multifactorial, caused by polymicrobial subgingival pathogens, including Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia. Chronic periodontal infection results in inflammation, destruction of connective tissues, periodontal ligament, and alveolar bone resorption, and ultimately tooth loss. Enoxacin and a bisphosphonate derivative of enoxacin (bis-enoxacin) inhibit osteoclast formation and bone resorption and also contain antibiotic properties. Our study proposes that enoxacin and/or bis-enoxacin may be useful in reducing alveolar bone resorption and possibly bacterial colonization. Rats were infected with 10(9) cells of polymicrobial inoculum consisting of P. gingivalis, T. denticola, and T. forsythia, as an oral lavage every other week for twelve weeks. Daily subcutaneous injections of enoxacin (5 mg/kg/day), bis-enoxacin (5, 25 mg/kg/day), alendronate (1, 10 mg/kg/day), or doxycycline (5 mg/day) were administered after 6 weeks of polymicrobial infection. Periodontal disease parameters, including bacterial colonization/infection, immune response, inflammation, alveolar bone resorption, and systemic spread, were assessed post-euthanasia. All three periodontal pathogens colonized the rat oral cavity during polymicrobial infection. Polymicrobial infection induced an increase in total alveolar bone resorption, intrabony defects, and gingival inflammation. Treatment with bis-enoxacin significantly decreased alveolar bone resorption more effectively than either alendronate or doxycycline. Histologic examination revealed that treatment with bis-enoxacin and enoxacin reduced gingival inflammation and decreased apical migration of junctional epithelium. These data support the hypothesis that bis-enoxacin and enoxacin may be useful for the treatment of periodontal disease.
Collapse
Affiliation(s)
- Mercedes F. Rivera
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Sasanka S. Chukkapalli
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Irina M. Velsko
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Ju-Youn Lee
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Indraneel Bhattacharyya
- Department of Oral Diagnostic Sciences, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Calogero Dolce
- Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Edgardo J. Toro
- Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - L. Shannon Holliday
- Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
- Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Lakshmyya Kesavalu
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| |
Collapse
|
39
|
Damkier HH, Josephsen K, Takano Y, Zahn D, Fejerskov O, Frische S. Fluctuations in surface pH of maturing rat incisor enamel are a result of cycles of H(+)-secretion by ameloblasts and variations in enamel buffer characteristics. Bone 2014; 60:227-34. [PMID: 24373736 DOI: 10.1016/j.bone.2013.12.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 11/18/2013] [Accepted: 12/16/2013] [Indexed: 12/15/2022]
Abstract
It is disputed if ameloblasts in the maturation zone of the enamel organ mainly buffer protons released by hydroxyapatite (HA) crystal growth or if they periodically secrete protons to create alternating acidic and alkaline conditions. The latter hypothesis predicts alternating pH regimes in maturing enamel, which would be affected by pharmacological interference with ameloblast H(+)-secretion. This study tests these predictions. Colorimetric pH-indicators and ratiometric fluorometry were used to measure surface pH in maturation zone enamel of rat incisors. Alternating acidic (down to pH6.24±0.06) and alkaline zones (up to pH7.34±0.08) were found along the tooth coinciding with ameloblast morphological cycles. Underlying the cyclic pattern, a gradual decrease in pH towards the incisal edge was seen. Vinblastine or FR167356 (H(+)-ATPase-inhibitor) disturbed ameloblast acid-secretion, especially in the early parts of acidic zones. Enamel surface pH reflects the titration state of surface PO4(3-)-ions. At the pH-values observed, PO4(3-) would be protonated (pKa>12) and HA dissolved. However, by molecular dynamics simulations we estimate the pKa of HPO4(2-) at an ideal HA surface to be 4.3. The acidic pH measured at the enamel surface may thus only dissolve non-perfect domains of HA crystals in which PO4(3-) is less electrostatically shielded. During repeated alkaline/acidic cycles, near-perfect HA-domains may therefore gradually replace less perfect HA-domains resulting in near-perfect HA-crystals. In conclusion, cyclic changes in ameloblast H(+)-secretion and the degree of enamel maturation determine enamel surface pH. This is in accordance with a hypothesis implicating H(+)-ATPase mediated acid-secretion by ameloblasts.
Collapse
Affiliation(s)
| | | | - Yoshiro Takano
- Section of Biostructural Science, Graduate School of Tokyo Medical and Dental University, Japan
| | - Dirk Zahn
- Lehrstuhl für Theoretische Chemie/Computer Chemie Centrum, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
| | - Ole Fejerskov
- Department of Biomedicine, Aarhus University, Denmark
| | | |
Collapse
|
40
|
Liu Y, Liu S, Fu Y, Chang DT, Zhou YH. Mineralised Collagen Scaffolds Loaded with Stromal Cell-derived Factor-1 Improve Mandibular Bone Regeneration. Chin J Dent Res 2014; 17:23-29. [PMID: 25028686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To create an in situ matrix environment conducive to stem cells from host bone marrow to promote bone regeneration. METHODS Three-dimensional porous, mineralised collagen (MC) scaffolds were prepared using a freeze-drying process. The microstructure of scaffolds was observed by field emission scanning electron microscopy. The Bose BioDynamic test system was applied to examine their mechanical properties in wet conditions. The effect of scaffolds loaded with stromal cellderived factor-1α (SDF-1α) on migration of stem cells was assessed using a 24-well transwell system. SDF-1α-loaded scaffolds were implanted in the critical size defect in rats and histological staining was used to evaluate the new bone formation. RESULTS Mechanical testing showed that the MC scaffold featured an increased Young's modulus compared with the pure collagen (Col) scaffold in wet conditions. In addition, the MC scaffold loaded with SDF-1α chemokine improved bone marrow stromal cells' migration. When implanted in mandibular bone defects with 5 mm diameter, the MC scaffolds containing SDF-1α significantly improved the formation of new bone and blood capillaries within the scaffolds, compared with the SDF-1α-loaded Col scaffolds and the control group. CONCLUSION The mineralised collagen scaffolds loaded with SDF-1α, which creates a matrix environment conducive to stem cell migration, can be exploited to improve bone self-repair as an alternative to contemporary cell seeding approaches.
Collapse
|
41
|
Pakosch D, Papadimas D, Munding J, Kawa D, Kriwalsky MS. Osteonecrosis of the mandible due to anti-angiogenic agent, bevacizumab. Oral Maxillofac Surg 2013; 17:303-306. [PMID: 23242941 DOI: 10.1007/s10006-012-0379-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Accepted: 11/22/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Osteonecrosis of the jaw (ONJ) is defined by areas of tissue breakdown and exposure of bone in the maxillofacial region that fail to heal within 8 weeks after identification by a health provider in a patient who has not received radiation of the jaws. The disease affects the quality of life and produces significant morbidity in afflicted patients. ONJ is correlated with such risk factors as treatment with bisphosphonates, dental extraction-related trauma, chemotherapy, corticosteroids, renal osteodystrophy and infections. Although the use of bisphosphonates is associated with osteonecrosis of the jaw, the pathophysiology of bisphosphonate-associated ONJ is still unknown. It has been assumed that bisphosphonates lead to the inhibition of capillary angiogenesis and disturbances in the activities of both osteoblasts and osteoclasts, thereby impairing bone remodelling. Currently, inhibitors of angiogenesis used in the treatment of cancer patients are implicated in isolated cases of ONJ. CASE REPORT This manuscript reports a case of ONJ in a female patient who received bevacizumab (Avastin®, Roche), a humanised monoclonal antibody that recognises and blocks vascular endothelial growth factor (VEGF)-A. CONCLUSION The anti-angiogenic agent, bevacizumab, may increase the risk of osteonecrosis of the jaw. This agent inhibits VEGF and, therefore, also presumably represses the vascularisation of the jaw, which leads to healing complications. Due to increasing use of bevacizumab, patients receiving this agent should be closely monitored for possible side effects.
Collapse
|
42
|
Allen MR, Chen NX, Gattone VH, Moe SM. Adverse mandibular bone effects associated with kidney disease are only partially corrected with bisphosphonate and/or calcium treatment. Am J Nephrol 2013; 38:458-64. [PMID: 24280830 DOI: 10.1159/000356335] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Accepted: 10/14/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Patients with chronic kidney disease (CKD) have a high prevalence of periodontal disease that may predispose to tooth loss and inflammation. The goal of this study was to test the hypotheses that a genetic rat model of progressive CKD would exhibit altered oral bone properties and that treatment with either bisphosphonates or calcium could attenuate these adverse changes. METHODS At 25 weeks of age, rats were treated with zoledronate (ZOL), calcium gluconate, or their combination for 5 or 10 weeks. Mandible bone properties were assessed using micro-computed tomography to determine bone volume (BV/TV) and cementum-enamel junction to alveolar crest distance (CEJ-AC). RESULTS Untreated CKD animals had significantly lower BV/TV at both 30 (-5%) and 35 (-14%) weeks of age and higher CEJ-AC (+27 and 29%) compared to normal animals. CKD animals had a significantly higher parathyroid hormone (PTH) compared to normal animals, yet similar levels of C-reactive protein (CRP). ZOL treatment normalized BV/TV over the first 5 weeks but this benefit was lost by 10 weeks. Calcium treatment, alone or in combination with ZOL, was effective in normalizing BV/TV at both time points. Neither ZOL nor calcium was able to correct the higher CEJ-AC caused by CKD. Calcium, but not ZOL, significantly reduced serum PTH, while neither treatment affected CRP. CONCLUSIONS (i) This progressive animal model of CKD shows a clear mandibular skeletal phenotype consistent with periodontitis, (ii) the periodontitis is not associated with systemic inflammation as measured by CRP, and (iii) reducing PTH has positive effects on the mandible phenotype.
Collapse
Affiliation(s)
- Matthew R Allen
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Ind., USA
| | | | | | | |
Collapse
|
43
|
Tchanque-Fossuo CN, Donneys A, Sarhaddi D, Poushanchi B, Deshpande SS, Weiss DM, Buchman SR. The effect of Amifostine prophylaxis on bone densitometry, biomechanical strength and union in mandibular pathologic fracture repair. Bone 2013; 57:56-61. [PMID: 23860272 PMCID: PMC3804002 DOI: 10.1016/j.bone.2013.07.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/02/2013] [Accepted: 07/03/2013] [Indexed: 01/23/2023]
Abstract
BACKGROUND Pathologic fractures (Fx) of the mandibles are severely debilitating consequences of radiation (XRT) in the treatment of craniofacial malignancy. We have previously demonstrated Amifostine's effect (AMF) in the remediation of radiation-induced cellular damage. We posit that AMF prophylaxis will preserve bone strength and drastically reverse radiotherapy-induced non-union in a murine mandibular model of pathologic fracture repair. MATERIALS AND METHODS Twenty-nine rats were randomized into 3 groups: Fx, XRT/Fx, and AMF/XRT/Fx. A fractionated human equivalent dose of radiation was delivered to the left hemimandibles of XRT/Fx and AMF/XRT/Fx. AMF/XRT/Fx was pre-treated with AMF. All groups underwent left mandibular osteotomy with external fixation and setting of a 2.1mm fracture gap post-operatively. Utilizing micro-computed tomography and biomechanical testing, the healed fracture was evaluated for strength. RESULTS All radiomorphometrics and biomechanical properties were significantly diminished in XRT/Fx compared to both Fx and AMF/XRT/Fx. No difference was demonstrated between Fx and AMF/XRT/Fx in both outcomes. CONCLUSION Our investigation establishes the significant and substantial capability of AMF prophylaxis to preserve and enhance bone union, quality and strength in the setting of human equivalent radiotherapy. Such novel discoveries establish the true potential to utilize pharmacotherapy to prevent and improve the treatment outcomes of radiation-induced late pathologic fractures.
Collapse
Affiliation(s)
- Catherine N. Tchanque-Fossuo
- University of Michigan Hospital and Health Systems, Pediatric Plastic Surgery Section, 1540 E. Hospital Drive, Ann Arbor, MI 48109, Phone: (734) 936 5881, Fax: (734) 936 7815
| | - Alexis Donneys
- University of Michigan Hospital and Health Systems, Pediatric Plastic Surgery Section, 1540 E. Hospital Drive, Ann Arbor, MI 48109, Phone: (734) 936 5881, Fax: (734) 936 7815
| | - Deniz Sarhaddi
- University of Michigan Hospital and Health Systems, Pediatric Plastic Surgery Section, 1540 E. Hospital Drive, Ann Arbor, MI 48109, Phone: (734) 936 5881, Fax: (734) 936 7815
| | - Behdod Poushanchi
- University of Michigan Hospital and Health Systems, Pediatric Plastic Surgery Section, 1540 E. Hospital Drive, Ann Arbor, MI 48109, Phone: (734) 936 5881, Fax: (734) 936 7815
| | - Sagar S. Deshpande
- University of Michigan Hospital and Health Systems, Pediatric Plastic Surgery Section, 1540 E. Hospital Drive, Ann Arbor, MI 48109, Phone: (734) 936 5881, Fax: (734) 936 7815
| | - Daniela M. Weiss
- University of Michigan Hospital and Health Systems, Pediatric Plastic Surgery Section, 1540 E. Hospital Drive, Ann Arbor, MI 48109, Phone: (734) 936 5881, Fax: (734) 936 7815
| | - Steven R. Buchman
- 4-730 C.S. Mott Children’s Hospital, 1540 E. Hospital Drive, Ann Arbor, MI 48109-4215, Phone: (734) 936-5881, Fax: (734) 936-7815
| |
Collapse
|
44
|
Mercer E, Norton T, Woo S, Treister N, Dodson TB, Solomon DH. Ninety-one osteoporosis patients affected with bisphosphonate-related osteonecrosis of the jaw: a case series. Calcif Tissue Int 2013; 93:241-8. [PMID: 23756612 PMCID: PMC3744621 DOI: 10.1007/s00223-013-9747-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 04/19/2013] [Indexed: 11/26/2022]
Abstract
Bisphosphonate (BP)-related osteonecrosis of the jaw (BRONJ) presents with necrotic bone in the mouth in the setting of BP exposure. It has been studied in cancer patients taking high-dose BP, but BRONJ has also been noted in patients taking lower-dose BP for osteoporosis. The purpose of this study was to characterize the phenotypes and outcomes in a large series of patients with osteoporosis and BRONJ in the setting of BP exposure. We conducted a retrospective case series. The sample was composed of subjects with BRONJ and osteoporosis. Subjects with a history of BP treatment for myeloma or metastatic cancer to the bones were excluded. Descriptive statistics were computed for the study variables. Ninety-one cases of BRONJ met the inclusion criteria. Subjects had a median age of 71 years and were predominantly female (94.5 %). The median time of BP exposure was 60 months (range 2-120). Most subjects were treated with alendronate (82.4 %). The mandible was involved more frequently (58.2 %) than the maxilla (37.3 %). Subjects commonly (65.9 %), but not universally, reported pain. For subjects with treatment outcome data (n = 0), most reported improvement (80.0 %). Although BRONJ is an uncommon condition, the absolute number of cases is fairly large due to the very large number of patients taking BPs for osteoporosis. The findings of this study confirm that BRONJ primarily affects the mandible, a substantial minority present without pain, and patients typically improve with treatment.
Collapse
Affiliation(s)
- E Mercer
- Division of Rheumatology, Brigham and Women's Hospital, 75 Francis Street, PBB-B3, Boston, MA 02115, USA
| | | | | | | | | | | |
Collapse
|
45
|
Medvedev IA, Basin EM, Sokolina IA. [The clinical and X-ray classification of osteonecrosis of the low jaw]. Vestn Rentgenol Radiol 2013:9-14. [PMID: 25672148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To elaborate a clinical and X-ray classification of osteonecrosis of the low jaw in people with desomorphine or pervitin addiction. MATERIAL AND METHODS Ninety-two patients with drug addiction who had undergone orthopantomography, direct frontal X-ray of the skull, and multislice computed tomography, followed by multiplanar and three-dimensional imaging reconstruction were examined. One hundred thirty four X-ray films and 74 computed tomographic images were analyzed. RESULTS The authors proposed a clinical and X-ray classification of osteonecrosis of the low jaw in people with desomorphine or pervitin addiction and elaborated recommendations for surgical interventions on the basis of the developed classification. CONCLUSION The developed clinical and X-ray classification and recommendations for surgical interventions may be used to treat osteonecroses of various etiology.
Collapse
|
46
|
Kang SY, Deshpande SS, Donneys A, Rodriguez JJ, Nelson NS, Felice PA, Chepeha DB, Buchman SR. Parathyroid hormone reverses radiation induced hypovascularity in a murine model of distraction osteogenesis. Bone 2013; 56:9-15. [PMID: 23643680 PMCID: PMC3758112 DOI: 10.1016/j.bone.2013.04.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 04/19/2013] [Accepted: 04/20/2013] [Indexed: 01/30/2023]
Abstract
BACKGROUND Radiation treatment results in a severe diminution of osseous vascularity. Intermittent parathyroid hormone (PTH) has been shown to have an anabolic effect on osteogenesis, though its impact on angiogenesis remains unknown. In this murine model of distraction osteogenesis, we hypothesize that radiation treatment will result in a diminution of vascularity in the distracted regenerate and that delivery of intermittent systemic PTH will promote angiogenesis and reverse radiation induced hypovascularity. MATERIALS AND METHODS Nineteen Lewis rats were divided into three groups. All groups underwent distraction of the left mandible. Two groups received radiation treatment to the left mandible prior to distraction, and one of these groups was treated with intermittent subcutaneous PTH (60 μg/kg, once daily) beginning on the first day of distraction for a total duration of 21 days. One group underwent mandibular distraction alone, without radiation. After consolidation, the rats were perfused and imaged with micro-CT angiography and quantitative vascular analysis was performed. RESULTS Radiation treatment resulted in a severe diminution of osseous vascularity in the distracted regenerate. In irradiated mandibles undergoing distraction osteogenesis, treatment with intermittent PTH resulted in significant increases in vessel volume fraction, vessel thickness, vessel number, degree of anisotropy, and a significant decrease in vessel separation (p < 0.05). No significant difference in quantitative vascularity existed between the group that was irradiated, distracted and treated with PTH and the group that underwent distraction osteogenesis without radiation treatment. CONCLUSIONS We quantitatively demonstrate that radiation treatment results in a significant depletion of osseous vascularity, and that intermittent administration of PTH reverses radiation induced hypovascularity in the murine mandible undergoing distraction osteogenesis. While the precise mechanism of PTH-induced angiogenesis remains to be elucidated, this report adds a key component to the pleotropic effect of intermittent PTH on bone formation and further supports the potential use of PTH to enhance osseous regeneration in the irradiated mandible.
Collapse
Affiliation(s)
- Stephen Y. Kang
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Otolaryngology-Head and Neck Surgery, University of Michigan Health System, 1500 E. Medical Center Dr., 1904 TC / SPC 5312, Ann Arbor, MI, USA
| | - Sagar S. Deshpande
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Alexis Donneys
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Joey J. Rodriguez
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Noah S. Nelson
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Peter A. Felice
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Douglas B. Chepeha
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Otolaryngology-Head and Neck Surgery, University of Michigan Health System, 1500 E. Medical Center Dr., 1904 TC / SPC 5312, Ann Arbor, MI, USA
| | - Steven R. Buchman
- Craniofacial Research Laboratory, University of Michigan Medical School, Ann Arbor, MI, USA
- Section of Plastic Surgery, University of Michigan Health System, 1500 E. Medical Center Dr., F7894 / 5219, Ann Arbor, MI, USA
| |
Collapse
|
47
|
Su J, Xu H, Sun J, Gong X, Zhao H. Dual delivery of BMP-2 and bFGF from a new nano-composite scaffold, loaded with vascular stents for large-size mandibular defect regeneration. Int J Mol Sci 2013; 14:12714-28. [PMID: 23778088 PMCID: PMC3709809 DOI: 10.3390/ijms140612714] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/14/2013] [Accepted: 06/13/2013] [Indexed: 12/26/2022] Open
Abstract
The aim of this study was to investigate the feasibility and advantages of the dual delivery of bone morphogenetic protein-2 (BMP-2) and basic fibroblast growth factor (bFGF) from nano-composite scaffolds (PLGA/PCL/nHA) loaded with vascular stents (PLCL/Col/nHA) for large bone defect regeneration in rabbit mandibles. Thirty-six large bone defects were repaired in rabbits using engineering bone composed of allogeneic bone marrow mesenchymal stem cells (BMSCs), bFGF, BMP-2 and scaffolds composed of PLGA/PCL/nHA loaded with PLCL/Col/nHA. The experiments were divided into six groups: BMSCs/bFGF/BMP-2/scaffold, BMSCs/BMP-2/scaffold, BMSCs/bFGF/scaffold, BMSCs/scaffold, scaffold alone and no treatment. Sodium alginate hydrogel was used as the carrier for BMP-2 and bFGF and its features, including gelling, degradation and controlled release properties, was detected by the determination of gelation and degradation time coupled with a controlled release study of bovine serum albumin (BSA). AlamarBlue assay and alkaline phosphatase (ALP) activity were used to evaluate the proliferation and osteogenic differentiation of BMSCs in different groups. X-ray and histological examinations of the samples were performed after 4 and 12 weeks post-implantation to clarify new bone formation in the mandible defects. The results verified that the use of sodium alginate hydrogel as a controlled release carrier has good sustained release ability, and the combined application of bFGF and BMP-2 could significantly promote the proliferation and osteogenic differentiation of BMSCs (p < 0.05 or p < 0.01). In addition, X-ray and histological examinations of the samples exhibited that the dual release group had significantly higher bone formation than the other groups. The above results indicate that the delivery of both growth factors could enhance new bone formation and vascularization compared with delivery of BMP-2 or bFGF alone, and may supply a promising way of repairing large bone defects in bone tissue engineering.
Collapse
Affiliation(s)
- Jiansheng Su
- Institute of Prosthodontics, School of Stomatology, Tongji University, 399 Yanchang Road, Shanghai 200092, China.
| | | | | | | | | |
Collapse
|
48
|
Ignatius MS, Unal Eroglu A, Malireddy S, Gallagher G, Nambiar RM, Henion PD. Distinct functional and temporal requirements for zebrafish Hdac1 during neural crest-derived craniofacial and peripheral neuron development. PLoS One 2013; 8:e63218. [PMID: 23667588 PMCID: PMC3646935 DOI: 10.1371/journal.pone.0063218] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 04/02/2013] [Indexed: 11/19/2022] Open
Abstract
The regulation of gene expression is accomplished by both genetic and epigenetic means and is required for the precise control of the development of the neural crest. In hdac1(b382) mutants, craniofacial cartilage development is defective in two distinct ways. First, fewer hoxb3a, dlx2 and dlx3-expressing posterior branchial arch precursors are specified and many of those that are consequently undergo apoptosis. Second, in contrast, normal numbers of progenitors are present in the anterior mandibular and hyoid arches, but chondrocyte precursors fail to terminally differentiate. In the peripheral nervous system, there is a disruption of enteric, DRG and sympathetic neuron differentiation in hdac1(b382) mutants compared to wildtype embryos. Specifically, enteric and DRG-precursors differentiate into neurons in the anterior gut and trunk respectively, while enteric and DRG neurons are rarely present in the posterior gut and tail. Sympathetic neuron precursors are specified in hdac1(b382) mutants and they undergo generic neuronal differentiation but fail to undergo noradrenergic differentiation. Using the HDAC inhibitor TSA, we isolated enzyme activity and temporal requirements for HDAC function that reproduce hdac1(b382) defects in craniofacial and sympathetic neuron development. Our study reveals distinct functional and temporal requirements for zebrafish hdac1 during neural crest-derived craniofacial and peripheral neuron development.
Collapse
Affiliation(s)
- Myron S. Ignatius
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, Ohio, United States of America
| | - Arife Unal Eroglu
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, Ohio, United States of America
| | - Smitha Malireddy
- Department of Neuroscience, Ohio State University, Columbus, Ohio, United States of America
| | - Glen Gallagher
- Department of Neuroscience, Ohio State University, Columbus, Ohio, United States of America
| | - Roopa M. Nambiar
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, Ohio, United States of America
| | - Paul D. Henion
- Department of Neuroscience, Ohio State University, Columbus, Ohio, United States of America
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, Ohio, United States of America
| |
Collapse
|
49
|
Bursian SJ, Kern J, Remington RE, Link JE, Fitzgerald SD. Dietary exposure of mink (Mustela vison) to fish from the upper Hudson River, New York, USA: effects on organ mass and pathology. Environ Toxicol Chem 2013; 32:794-801. [PMID: 23293106 DOI: 10.1002/etc.2114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 09/03/2012] [Accepted: 11/08/2012] [Indexed: 06/01/2023]
Abstract
The authors evaluated effects of feeding ranch mink (Mustela vison) diets containing polychlorinated biphenyl (PCB)-contaminated fish from the upper Hudson River (New York, USA) on adult and offspring organ mass and pathology. Diets contained 2.5 to 20% Hudson River fish, providing 0.72 to 6.1 µg ΣPCBs/g feed (4.8-38 pg toxic equivalents [TEQWHO 2005 ]/g feed). Absolute thyroid and adrenal gland masses were increased in adult females and 31-week-old juveniles, respectively, and absolute liver and heart masses were decreased in six-week-old kits exposed to dietary PCBs. Dietary concentrations of 0.72 µg ΣPCBs/g feed (4.8 pg TEQWHO 2005 /g feed) and greater induced mandibular and maxillary squamous epithelial proliferation in adult animals. The dietary concentration of ΣPCBs predicted to result in 20% incidence of the jaw lesion (EC20) was 2.3 µg ΣPCBs/g feed (15 pg TEQWHO 2005 /g feed), and the hepatic concentration was 2.8 µg ΣPCBs/g liver (89 pg TEQWHO 2005 /g liver). The EC20 values were greater than the dietary and hepatic concentrations predicted to result in a 20% increase in kit mortality (LC20) at six weeks of age (0.34 µg ΣPCBs/g feed or 2.6 pg TEQWHO 2005 /g feed and 0.80 µg ΣPCBs/g liver or 13 pg TEQWHO 2005 /g liver). However, the EC20 values reflect exposure of adults to PCBs for approximately six months, and the LC20 values reflect exposure of offspring from conception onward.
Collapse
Affiliation(s)
- Steven J Bursian
- Department of Animal Science, Michigan State University, East Lansing, Michigan, USA.
| | | | | | | | | |
Collapse
|
50
|
Nagy Z, Schmidt P, Hermann P. [Complex prosthetic rehabilitation of a patient with temporomandibular dysfunction. Case report]. Fogorv Sz 2013; 106:7-10. [PMID: 23650756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
There are varying opinions regarding the contribution of occlusal interferences to the development and progression of temporomandibular dysfunction (TMD). Several studies have demonstrated that the use of occlusal adjustment might prevent the development of TMD and the exacerbation of its symptoms. Since the aetiology of TMD is multiple, the prosthodontic treatment cannot always be sufficient, but tends to be effective in some cases. The present article describes a case of a complex prosthetic rehabilitation of a patient with TMD that originates from her previous prosthesis, resulting in reduced vertical dimension. Treatment included the registration of vertical and horizontal dimensions of occlusion by gothic arch (arrow-point) tracing. Degrees of the mandibular movement were recorded by digital axiograph (ARCUSdigma-KaVo) and transferred to a semi-adjustable articulator (KaVo Protar 5B). Appropriate vertical and horizontal occlusal dimensions and individual mandibular movements were then transferred to the final prosthesis.
Collapse
Affiliation(s)
- Zsanett Nagy
- Semmelweis Egyetem FogpótIástani Klinika, Budapest
| | | | | |
Collapse
|