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Li G, Liu S, Xu H, Chen Y, Deng J, Xiong A, Wang D, Weng J, Yu F, Gao L, Ding C, Zeng H. Potential effects of teriparatide (PTH (1-34)) on osteoarthritis: a systematic review. Arthritis Res Ther 2023; 25:3. [PMID: 36609338 PMCID: PMC9817404 DOI: 10.1186/s13075-022-02981-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 12/19/2022] [Indexed: 01/09/2023] Open
Abstract
Osteoarthritis (OA) is a common and prevalent degenerative joint disease characterized by degradation of the articular cartilage. However, none of disease-modifying OA drugs is approved currently. Teriparatide (PTH (1-34)) might stimulate chondrocyte proliferation and cartilage regeneration via some uncertain mechanisms. Relevant therapies of PTH (1-34) on OA with such effects have recently gained increasing interest, but have not become widespread practice. Thus, we launch this systematic review (SR) to update the latest evidence accordingly. A comprehensive literature search was conducted in PubMed, Web of Science, MEDLINE, the Cochrane Library, and Embase from their inception to February 2022. Studies investigating the effects of the PTH (1-34) on OA were obtained. The quality assessment and descriptive summary were made of all included studies. Overall, 307 records were identified, and 33 studies were included. In vivo studies (n = 22) concluded that PTH (1-34) slowed progression of OA by alleviating cartilage degeneration and aberrant remodeling of subchondral bone (SCB). Moreover, PTH (1-34) exhibited repair of cartilage and SCB, analgesic, and anti-inflammatory effects. In vitro studies (n = 11) concluded that PTH (1-34) was important for chondrocytes via increasing the proliferation and matrix synthesis but preventing apoptosis or hypertrophy. All included studies were assessed with low or unclear risk of bias in methodological quality. The SR demonstrated that PTH (1-34) could alleviate the progression of OA. Moreover, PTH (1-34) had beneficial effects on osteoporotic OA (OPOA) models, which might be a therapeutic option for OA and OPOA treatment.
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Affiliation(s)
- Guoqing Li
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Su Liu
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Huihui Xu
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Yixiao Chen
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Jiapeng Deng
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Ao Xiong
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Deli Wang
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Jian Weng
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Fei Yu
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036 People’s Republic of China
| | - Liang Gao
- Center for Clinical Medicine, Huatuo Institute of Medical Innovation (HTIMI), Berlin, Germany. .,Sino Euro Orthopaedics Network (SEON), Berlin, Germany.
| | - Changhai Ding
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China. .,National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China.
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Wang R, Qiao H, Qian Y, Zhen G, Zhao Z, Li Y. Abaloparatide and teriparatide enhance mandibular growth in adolescent rats with site-specific and mechano-related effects. Eur J Orthod 2022; 45:224-234. [PMID: 36576115 DOI: 10.1093/ejo/cjac069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Teriparatide (TPTD) and abaloparatide (ABL) are two osteoanabolic drugs targeting parathyroid hormone (PTH)1R signalling. This study aimed to investigate the effects of TPTD and ABL on the adolescent mandibular growth. METHOD In total, 70 4-week-old male Sprague-Dawley rats were randomly divided into 14 groups, treated with intermittent TPDT or ABL at various doses, accompanied by mandibular advancement (MA) or not. 3D printing was used to fabricate an innovative splint for MA. After a 4-week treatment, morphological measurement, histological and immunohistochemical analysis were performed. Mandibular condylar chondrocytes (MCCs) were treated with TPTD or ABL, followed by CCK-8 assay, alcian blue staining, real time-PCR and immunofluorescent staining. RESULT In vivo, TPTD or ABL alone increased the condylar length and cartilage thickness, with up-regulated SOX9 and COL II, whilst down-regulated COL X; however, when combined with MA, the promotive effects were attenuated. TPTD or ABL alone increased the mandibular body height and mandibular angle width, whilst increased the mandibular body length and alveolar bone width when combined with MA. In vitro, TPTD or ABL enhanced the MCC proliferation, glycosaminoglycan synthesis, COL II and SOX9 expression, whilst down-regulated COL X, Ihh and PTH1R expression. CONCLUSION Both ABL and TPTD enhance mandibular growth in adolescent rats with site-specific and mechano-related effects, including propelling chondrogenesis at the condylar cartilage and promoting bone apposition at other mechano-responsive sites. They behave as promising drugs for mandibular growth modification, and in general ABL seems more potent than TPTD in this context.
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Affiliation(s)
- Ruyi Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hui Qiao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuran Qian
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Gehua Zhen
- Department of Orthopedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Li
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Chen PJ, Wang K, Mehta S, O’Brien MH, Dealy CN, Dutra EH, Yadav S. Anabolic Response of Intermittent Parathyroid Hormone and Alendronate on the Osteochondral Tissue of TMJ. Cartilage 2022; 13:171-183. [PMID: 36239576 PMCID: PMC9924974 DOI: 10.1177/19476035221109229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To characterize the effects of parathyroid hormone (PTH) and alendronate (Alend) on the osteochondral tissue of temporomandibular joint (TMJ). MATERIALS AND METHODS Ninety-six male and female transgenic reporter mice, 4 to 5 weeks old were divided into 6 groups: (1) Control group: Saline was injected daily for 14 days; (2) PTH: PTH was injected daily for 14 days; (3) Alend: Alend was injected every alternate days for 14 days; (4) Combined PTH and Alend: PTH was injected daily and Alend injected every alternate days for 14 days; (5) PTH then Alend: PTH was injected daily for 14 days followed by Alend injections in alternate days for 14 days; and (6) PTH wait Alend: PTH was injected daily for 14 days. There was a waiting period of 1 week before administration of Alend in alternate days for 14 days. Mice were injected with 5-ethnyl-2'-deoxyuridine (EdU), 48 and 24 hours prior to euthanization. RESULTS There was significant increase in bone volume and decrease in osteoclastic activity in groups in which Alend was administered after PTH in both gender. There was significant increase in cartilage thickness with PTH or Alend alone in females, whereas in males, PTH alone led to increase in cartilage thickness. Chondrocyte apoptosis was significantly decreased with PTH or Alend alone in both male and female. Matrix metallopeptidase 13, and aggreganase-2 (ADAMTS5) expression were significantly decreased with PTH and Alend alone in both gender. CONCLUSION PTH and Alend administration causes anabolic effects in the osteochondral tissue of TMJ.
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Affiliation(s)
- Po-Jung Chen
- Division of Orthodontics, School of
Dental Medicine, UConn Health, Farmington, CT, USA
| | - Ke Wang
- Division of Orthodontics, School of
Dental Medicine, UConn Health, Farmington, CT, USA
| | - Shivam Mehta
- Department of Developmental Sciences,
Marquette University School of Dentistry, Milwaukee, WI, USA
| | - Mara H. O’Brien
- Division of Orthodontics, School of
Dental Medicine, UConn Health, Farmington, CT, USA
| | - Caroline N. Dealy
- Division of Orthodontics, School of
Dental Medicine, UConn Health, Farmington, CT, USA
| | - Eliane H. Dutra
- Division of Orthodontics, School of
Dental Medicine, UConn Health, Farmington, CT, USA
| | - Sumit Yadav
- Division of Orthodontics, School of
Dental Medicine, UConn Health, Farmington, CT, USA,Sumit Yadav, Department of Orthodontics,
School of Dental Medicine, UConn Health, 263 Farmington Avenue, MC1725,
Farmington, CT 06030, USA.
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Inducing substances for chondrogenic differentiation of dental pulp stem cells in the conditioned medium of a novel chordoma cell line. Hum Cell 2022; 35:745-755. [DOI: 10.1007/s13577-021-00662-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 12/11/2021] [Indexed: 01/14/2023]
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Ma C, Liu H, Wei Y, Li H, Miao D, Ren Y. Exogenous PTH 1-34 Attenuates Impaired Fracture Healing in Endogenous PTH Deficiency Mice via Activating Indian Hedgehog Signaling Pathway and Accelerating Endochondral Ossification. Front Cell Dev Biol 2022; 9:750878. [PMID: 35071224 PMCID: PMC8766796 DOI: 10.3389/fcell.2021.750878] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022] Open
Abstract
Fracture healing is a complicated, long-term, and multistage repair process. Intermittent administration of parathyroid hormone (PTH) has been proven effective on intramembranous and endochondral bone formation during the fracture healing process, however, the mechanism is unclear. In this study, we investigated the role of exogenous PTH and endogenous PTH deficiency in bone fracture healing and explored the mechanism by using PTH knockout (PTH-/-) mice and ATDC5 cells. In a mouse femur fracture model, endogenous PTH deficiency could delay endochondral ossification whereas exogenous PTH promotes accumulation of endochondral bone, accelerates cartilaginous callus conversion to bony callus, enhances maturity of bony callus, and attenuates impaired fracture healing resulting from endogenous PTH deficiency. In fracture callus tissue, endogenous PTH deficiency could inhibit chondrocyte proliferation and differentiation whereas exogenous PTH could activate the IHH signaling pathway to accelerate endochondral ossification and rescue impaired fracture healing resulting from endogenous PTH deficiency. In vitro, exogenous PTH promotes cell proliferation by activating IHH signaling pathway on ATDC5 cells. In mechanistic studies, by using ChIP and luciferase reporter assays, we showed that PTH could phosphorylate CREB, and subsequently bind to the promoter of IHH, causing the activation of IHH gene expression. Therefore, results from this study support the concept that exogenous PTH 1-34 attenuates impaired fracture healing in endogenous PTH deficiency mice via activating the IHH pathway and accelerating endochondral ossification. Hence, the investigation of the mechanism underlying the effects of PTH treatment on fracture repair might guide the exploration of effective therapeutic targets for fracture.
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Affiliation(s)
- Cheng Ma
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huan Liu
- Department of Orthopaedics, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Yifan Wei
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - He Li
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dengshun Miao
- Nanjing Medical University, Affiliated Friendship Plastic Surgery Hospital, Nanjing, China
| | - Yongxin Ren
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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6
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O’Brien MH, Dutra EH, Mehta S, Chen PJ, Yadav S. BMP2 Is Required for Postnatal Maintenance of Osteochondral Tissues of the Temporomandibular Joint. Cartilage 2021; 13:734S-743S. [PMID: 33307770 PMCID: PMC8804803 DOI: 10.1177/1947603520980158] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE Bone morphogenetic protein 2 (BMP2) plays important roles in cartilage growth and development. Paradoxically, elevated levels of BMP2 leads to hypertrophic differentiation and osteoarthritis of cartilage. We examined the in vivo loss of BMP2 in cells expressing aggrecan of the mandibular condyle and knee. DESIGN Three-week-old BMP2 flox/flox-CreER-positive mice and their Cre-negative littermates were treated with tamoxifen and raised until 3 or 6 months. We also investigated the direct effects of BMP2 on chondrocytes in vitro. Cells from the mandibular condyle of mice were treated with recombinant human BMP2 (rhBMP2) or rhNoggin (inhibitor of BMP2 signaling). RESULTS Conditional deletion of BMP2 caused breakage of the cartilage integrity in the mandibular condyle of mice from both age groups, accompanied by a decrease in cartilage thickness, matrix synthesis, mineralization, chondrocyte proliferation, and increased expression of degeneration markers, while the effects at articular cartilage were not significant. In vitro results revealed that rhBMP2 increased chondrocyte proliferation, mineralization, and differentiation, while noggin induced opposite effects. CONCLUSIONS In conclusion, BMP2 is essential for postnatal maintenance of the osteochondral tissues of the mandibular condyle.
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Affiliation(s)
- Mara H. O’Brien
- Division of Orthodontics,
University of Connecticut Health Center, Farmington, CT, USA
| | - Eliane H. Dutra
- Division of Orthodontics,
University of Connecticut Health Center, Farmington, CT, USA
| | - Shivam Mehta
- Division of Orthodontics,
University of Connecticut Health Center, Farmington, CT, USA
| | - Po-Jung Chen
- Division of Orthodontics,
University of Connecticut Health Center, Farmington, CT, USA
| | - Sumit Yadav
- Division of Orthodontics,
University of Connecticut Health Center, Farmington, CT, USA,Sumit Yadav, Department of
Orthodontics, University of Connecticut Health Center, 263 Farmington
Avenue, MC1725, Farmington, CT 06030, USA.
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7
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Lyu P, Li B, Li P, Bi R, Cui C, Zhao Z, Zhou X, Fan Y. Parathyroid Hormone 1 Receptor Signaling in Dental Mesenchymal Stem Cells: Basic and Clinical Implications. Front Cell Dev Biol 2021; 9:654715. [PMID: 34760881 PMCID: PMC8573197 DOI: 10.3389/fcell.2021.654715] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 09/28/2021] [Indexed: 02/05/2023] Open
Abstract
Parathyroid hormone (PTH) and parathyroid hormone-related protein (PTHrP) are two peptides that regulate mineral ion homeostasis, skeletal development, and bone turnover by activating parathyroid hormone 1 receptor (PTH1R). PTH1R signaling is of profound clinical interest for its potential to stimulate bone formation and regeneration. Recent pre-clinical animal studies and clinical trials have investigated the effects of PTH and PTHrP analogs in the orofacial region. Dental mesenchymal stem cells (MSCs) are targets of PTH1R signaling and have long been known as major factors in tissue repair and regeneration. Previous studies have begun to reveal important roles for PTH1R signaling in modulating the proliferation and differentiation of MSCs in the orofacial region. A better understanding of the molecular networks and underlying mechanisms for modulating MSCs in dental diseases will pave the way for the therapeutic applications of PTH and PTHrP in the future. Here we review recent studies involving dental MSCs, focusing on relationships with PTH1R. We also summarize recent basic and clinical observations of PTH and PTHrP treatment to help understand their use in MSCs-based dental and bone regeneration.
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Affiliation(s)
- Ping Lyu
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, China
| | - Bo Li
- State Key Laboratory of Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Peiran Li
- State Key Laboratory of Oral Diseases, Department of Oral and Maxillofacial Surgery, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ruiye Bi
- State Key Laboratory of Oral Diseases, Department of Oral and Maxillofacial Surgery, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chen Cui
- Guangdong Province Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong, China
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, China
| | - Yi Fan
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, China
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Dutra EH, O’Brien MH, Chen PJ, Wei M, Yadav S. Intermittent Parathyroid Hormone [1-34] Augments Chondrogenesis of the Mandibular Condylar Cartilage of the Temporomandibular Joint. Cartilage 2021; 12:475-483. [PMID: 30897936 PMCID: PMC8461153 DOI: 10.1177/1947603519833146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE To characterize the long-term effects of intermittent parathyroid hormone (I-PTH) on the mandibular condylar cartilage (MCC) and subchondral bone of the temporomandibular joint, in vivo and in vitro. MATERIALS AND METHODS For the in vivo experiments, sixteen 10-week-old mice were divided into 2 groups: (1) I-PTH (n = 8)-subcutaneous daily injection of PTH; (2) control group (n = 8)-subcutaneous daily injection of saline solution. Experiments were carried out for 4 weeks. Mice were injected with calcein, alizarin complexone, and cell proliferation marker before euthanasia. For the in vitro experiments, primary chondrocyte cultures from the MCC of eight 10-week-old mice were treated with I-PTH for 14 days. RESULTS There was a significant increase in bone volume, tissue density, mineral deposition, osteoclastic activity, cell proliferation in the cartilage, and cartilage thickness in the I-PTH-treated mice when compared with the control group. In addition, immunohistochemistry in cartilage revealed that I-PTH administration led to an increase in expression of vascular endothelial growth factor and to a decreased expression of sclerostin, matrix metallopeptidase 13, and aggreganase-1 (ADAM-TS4). Quantitative polymerase chain reaction analysis of the I-PTH-treated chondrocytes revealed significantly decreased relative expression of collagen type X (Col10a1), alkaline phosphatase (Alp), and Indian Hedgehog (Ihh) and remarkable increased expression of Sox9, fibroblast growth factor 2 (Fgf2), and proteoglycan 4 (Prg4). CONCLUSION I-PTH administration causes anabolic effects at the subchondral region of the mandibular condyle while triggers anabolic and protective effects at the MCC.
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Affiliation(s)
- Eliane H. Dutra
- Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, USA
| | - Mara H. O’Brien
- Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, USA
| | - Po-Jung Chen
- Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, USA
| | - Mei Wei
- UCONN School of Engineering, University of Connecticut, Storrs, CT, USA
| | - Sumit Yadav
- Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, USA,Sumit Yadav, Department of Orthodontics, University of Connecticut Health Center 263 Farmington Avenue, MC1725, Farmington, CT 06030, USA.
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Jia Y, Xie L, Tang Z, Wang D, Hu Y, Zhang G, Chen Y, Gao Q. Parathyroid hormone promotes cartilage healing after free reduction of mandibular condylar fractures by upregulating Sox9. Exp Biol Med (Maywood) 2021; 246:2249-2258. [PMID: 34233524 DOI: 10.1177/15353702211027114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
After high fractures of the mandibular condyle, the insufficient blood supply to the condyle often leads to poor bone and cartilage repair ability and poor clinical outcome. Parathyroid hormone (PTH) can promote the bone formation and mineralization of mandibular fracture, but its effects on cartilage healing after the free reduction and internal fixation of high fractures of the mandibular condyle are unknown. In this study, a rabbit model of free reduction and internal fixation of high fractures of the mandibular condyle was established, and the effects and mechanisms of PTH on condylar cartilage healing were explored. Forty-eight specific-pathogen-free (SPF) grade rabbits were randomly divided into two groups. In the experimental group, PTH was injected subcutaneously at 20 µg/kg (PTH (1-34)) every other day, and in the control group, PTH was replaced with 1 ml saline. The healing cartilages were assessed at postoperative days 7, 14, 21, and 28. Observation of gross specimens, hematoxylin eosin staining and Safranin O/fast green staining found that every-other-day subcutaneous injection of PTH at 20 µg/kg promoted healing of condylar cartilage and subchondral osteogenesis in the fracture site. Immunohistochemistry and polymerase chain reaction showed that PTH significantly upregulated the chondrogenic genes Sox9 and Col2a1 in the cartilage fracture site within 7-21 postoperative days in the experimental group than those in the control group, while it downregulated the cartilage inflammation gene matrix metalloproteinase-13 and chondrocyte terminal differentiation gene ColX. In summary, exogenous PTH can stimulate the formation of cartilage matrix by triggering Sox9 expression at the early stage of cartilage healing, and it provides a potential therapeutic protocol for high fractures of the mandibular condyle.
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Affiliation(s)
- Yuanyuan Jia
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Liuqin Xie
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Zhenglong Tang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Dongxiang Wang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Yun Hu
- Department of Oral Histopathology, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Guoxing Zhang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Youli Chen
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
| | - Qiong Gao
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Guizhou Medical University, Guiyang 550004, China
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Pence IJ, O’Brien CM, Masson LE, Mahadevan-Jansen A. Application driven assessment of probe designs for Raman spectroscopy. BIOMEDICAL OPTICS EXPRESS 2021; 12:852-871. [PMID: 33680546 PMCID: PMC7901321 DOI: 10.1364/boe.413436] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/13/2020] [Accepted: 12/29/2020] [Indexed: 05/23/2023]
Abstract
In vivo Raman spectroscopy has been utilized for the non-invasive, non-destructive assessment of tissue pathophysiology for a variety of applications largely through the use of fiber optic probes to interface with samples of interest. Fiber optic probes can be designed to optimize the collection of Raman-scattered photons from application-dependent depths, and this critical consideration should be addressed when planning a study. Herein we investigate four distinct probe geometries for sensitivity to superficial and deep signals through a Monte Carlo model that incorporates Raman scattering and fluorescence. Experimental validation using biological tissues was performed to accurately recapitulate in vivo scenarios. Testing in biological tissues agreed with modeled results and revealed that microlens designs had slightly enhanced performance at shallow depths (< 1 mm), whereas all of the beampath-modified designs yielded more signal from deep within tissue. Simulation based on fluence maps generated using ray-tracing in the absence of optical scattering had drastically different results as a function of depth for each probe compared to the biological simulation. The contrast in simulation results between the non-scattering and biological tissue phantoms underscores the importance of considering the optical properties of a given application when designing a fiber optic probe. The model presented here can be easily extended for optimization of entirely novel probe designs prior to fabrication, reducing time and cost while improving data quality.
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11
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Sun NN, He DM, Yang C, Zhou Q. Posttraumatic Osteoarthritis of Temporomandibular Joint in Miniature Pigs. J HARD TISSUE BIOL 2021. [DOI: 10.2485/jhtb.30.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ning-Ning Sun
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases
| | - Dong-Mei He
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People’s Hospital, School of Stomatology, Shanghai Jiao Tong University School of Medicine
| | - Chi Yang
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People’s Hospital, School of Stomatology, Shanghai Jiao Tong University School of Medicine
| | - Qing Zhou
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases
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Yu S, Tang Q, Xie M, Zhou X, Long Y, Xie Y, Guo F, Chen L. Circadian BMAL1 regulates mandibular condyle development by hedgehog pathway. Cell Prolif 2020; 53:e12727. [PMID: 31747713 PMCID: PMC6985652 DOI: 10.1111/cpr.12727] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/17/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Chondrogenesis and endochondral ossification in mandibular condyle play crucial roles in maxillofacial morphogenesis and function. Circadian regulator brain and muscle arnt-like 1 (BMAL1) is proven to be essential for embryonic and postnatal development. The goal of this study was to define the functions of BMAL1 in the embryonic and postnatal growth of mandibular condylar cartilages (MCC). MATERIALS AND METHODS Micro-CT, TUNEL staining and EdU assay were performed using BMAL1-deficient mice model, and in vitro experiments were performed using rat chondrocytes isolated from MCC. RNA sequencing in mandibular condyle tissues from Bmal1-/- mice and the age-matched wild-type mice was used for transcriptional profiling at different postnatal stages. RESULTS The expression levels of BMAL1 decrease gradually in MCC. BMAL1 is proved to regulate sequential chondrocyte differentiation, and its deficiency can result in the impairment of endochondral ossification of MCC. RNA sequencing reveals hedgehog signalling pathway is the potential target of BMAL1. BMAL1 regulates hedgehog signalling and affects its downstream cascades through directly binding to the promoters of Ptch1 and Ihh, modulating targets of hedgehog signalling which is indispensable for endochondral ossification. Importantly, the short stature phenotypes caused by BMAL1 deficiency can be rescued by hedgehog signalling activator. CONCLUSIONS Collectively, these results indicate that BMAL1 plays critical roles on chondrogenesis and endochondral ossification of MCC, giving a new insight on potential therapeutic strategies for facial dysmorphism.
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Affiliation(s)
- Shaoling Yu
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Qingming Tang
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Mengru Xie
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Xin Zhou
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yanlin Long
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yanling Xie
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Fengyuan Guo
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Lili Chen
- Department of StomatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
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