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Brukner Havelková P, Dulíková V, Bejdová Š, Vacková J, Velemínský P, Bárta M. Ancient Egyptian scribes and specific skeletal occupational risk markers (Abusir, Old Kingdom). Sci Rep 2024; 14:13317. [PMID: 38937484 PMCID: PMC11211405 DOI: 10.1038/s41598-024-63549-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 05/30/2024] [Indexed: 06/29/2024] Open
Abstract
Men with writing proficiency enjoyed a privileged position in ancient Egyptian society in the third millennium BC. Research focusing on these officials of elevated social status ("scribes") usually concentrates on their titles, scribal statues, iconography, etc., but the individuals themselves, and their skeletal remains, have been neglected. The aim of this study is to reveal whether repetitive tasks and maintained postures related to scribal activity can manifest in skeletal changes and identify possible occupational risk factors. A total of 1767 items including entheseal changes, non-metric traits, and degenerative changes were recorded from the human remains of 69 adult males of well-defined social status categories from the necropolis at Abusir (2700-2180 BC). Statistically significant differences between the scribes and the reference group attested a higher incidence of changes in scribes and manifested themselves especially in the occurrence of osteoarthritis of the joints. Our research reveals that remaining in a cross-legged sitting or kneeling position for extended periods, and the repetitive tasks related to writing and the adjusting of the rush pens during scribal activity, caused the extreme overloading of the jaw, neck and shoulder regions.
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Affiliation(s)
- Petra Brukner Havelková
- Department of Anthropology, National Museum in Prague, Cirkusová 1740, 193 00, Prague 9, Czech Republic.
- Czech Institute of Egyptology, Faculty of Arts, Charles University, 110 00, Prague, Czech Republic.
| | - Veronika Dulíková
- Czech Institute of Egyptology, Faculty of Arts, Charles University, 110 00, Prague, Czech Republic
| | - Šárka Bejdová
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University, 128 00, Prague, Czech Republic
| | - Jana Vacková
- Czech Institute of Egyptology, Faculty of Arts, Charles University, 110 00, Prague, Czech Republic
- Department of Applied Mathematics, Faculty of Information Technology, Czech Technical University in Prague, 160 00, Prague, Czech Republic
| | - Petr Velemínský
- Department of Anthropology, National Museum in Prague, Cirkusová 1740, 193 00, Prague 9, Czech Republic
| | - Miroslav Bárta
- Czech Institute of Egyptology, Faculty of Arts, Charles University, 110 00, Prague, Czech Republic
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Cult, herding, and 'pilgrimage' in the Late Neolithic of north-west Arabia: Excavations at a mustatil east of AlUla. PLoS One 2023; 18:e0281904. [PMID: 36920897 PMCID: PMC10016714 DOI: 10.1371/journal.pone.0281904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/02/2023] [Indexed: 03/16/2023] Open
Abstract
Since the 1970s, monumental stone structures now called mustatil have been documented across Saudi Arabia. However, it was not until 2017 that the first intensive and systematic study of this structure type was undertaken, although this study could not determine the precise function of these features. Recent excavations in AlUla have now determined that these structures fulfilled a ritual purpose, with specifically selected elements of both wild and domestic taxa deposited around a betyl. This paper outlines the results of the University of Western Australia's work at site IDIHA-0008222, a 140 m long mustatil (IDIHA-F-0011081), located 55 km east of AlUla. Work at this site sheds new and important light on the cult, herding and 'pilgrimage' in the Late Neolithic of north-west Arabia, with the site revealing one of the earliest chronometrically dated betyls in the Arabian Peninsula and some of the earliest evidence for domestic cattle in northern Arabia.
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Beck De Lotto MA, Magno G, Thiene G, Zampieri F, Zanatta A. Paleopathology of the skull of Santorio Santorio, father of modern clinical experimental physiology. Virchows Arch 2022; 482:767-771. [PMID: 36163303 DOI: 10.1007/s00428-022-03416-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/02/2022] [Accepted: 09/19/2022] [Indexed: 10/14/2022]
Abstract
The University of Padua (Italy) preserves the skull of Santorio Santorio, father of the modern clinical experimental physiology. A recent study performed with modern anthropological methods and medical instruments (CT scan) revealed the presence of a lobular formation in the left temporal bone, with an irregular morphology, internal bone sequestrum, a well-defined non-continuous sclerosis and both internal and external thinning of the cranial plate. Three oval depressions observed in the cranial vault, edentulism and moderate osteoarthritis of the temporomandibular joint were also investigated. The lobular formation was an epidermoid cyst and the oval depressions were the result of other cysts. The edentulism was consistent with some metabolic deficiency or disease, whilst the osteoarthritis appeared to be the result of antemortem tooth loss. This study allowed to investigate a complex and peculiar palaeopathological picture, linked to a piece of the history of the University of Padua.
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Affiliation(s)
- Michael Allen Beck De Lotto
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Via Falloppio, 50-35121, Padua, Italy
| | - Giovanni Magno
- University Museums Centre CAM, University of Padua, Padua, Italy
| | - Gaetano Thiene
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Via Falloppio, 50-35121, Padua, Italy
| | - Fabio Zampieri
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Via Falloppio, 50-35121, Padua, Italy
| | - Alberto Zanatta
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Via Falloppio, 50-35121, Padua, Italy.
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Mackie T, Al Turkestani N, Bianchi J, Li T, Ruellas A, Gurgel M, Benavides E, Soki F, Cevidanes L. Quantitative bone imaging biomarkers and joint space analysis of the articular Fossa in temporomandibular joint osteoarthritis using artificial intelligence models. FRONTIERS IN DENTAL MEDICINE 2022; 3:1007011. [PMID: 36404987 PMCID: PMC9673279 DOI: 10.3389/fdmed.2022.1007011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2024] Open
Abstract
Temporomandibular joint osteoarthritis (TMJ OA) is a disease with a multifactorial etiology, involving many pathophysiological processes, and requiring comprehensive assessments to characterize progressive cartilage degradation, subchondral bone remodeling, and chronic pain. This study aimed to integrate quantitative biomarkers of bone texture and morphometry of the articular fossa and joint space to advance the role of imaging phenotypes for diagnosis of Temporomandibular Joint Osteoarthritis (TMJ OA) in early to moderate stages by improving the performance of machine-learning algorithms to detect TMJ OA status. Ninety-two patients were prospectively enrolled (184 h-CBCT scans of the right and left mandibular condyles), divided into two groups: 46 control and 46 TMJ OA subjects. No significant difference in the articular fossa radiomic biomarkers was found between TMJ OA and control patients. The superior condyle-to-fossa distance (p < 0.05) was significantly smaller in diseased patients. The interaction effects of the articular fossa radiomic biomarkers enhanced the performance of machine-learning algorithms to detect TMJ OA status. The LightGBM model achieved an AUC 0.842 to diagnose the TMJ OA status with Headaches and Range of Mouth Opening Without Pain ranked as top features, and top interactions of VE-cadherin in Serum and Angiogenin in Saliva, TGF-β1 in Saliva and Headaches, Gender and Muscle Soreness, PA1 in Saliva and Range of Mouth Opening Without Pain, Lateral Condyle Grey Level Non-Uniformity and Lateral Fossa Short Run Emphasis, TGF-β1 in Serum and Lateral Fossa Trabeculae number, MMP3 in Serum and VEGF in Serum, Headaches and Lateral Fossa Trabecular spacing, Headaches and PA1 in Saliva, and Headaches and BDNF in Saliva. Our preliminary results indicate that condyle imaging features may be more important in regards to main effects, but the fossa imaging features may have a larger contribution in terms of interaction effects. More studies are needed to optimize and further enhance machine-learning algorithms to detect early markers of disease, improve prediction of disease progression and severity to ultimately better serve clinical decision support systems in the treatment of patients with TMJ OA.
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Affiliation(s)
- Tamara Mackie
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - Najla Al Turkestani
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, United States
- Department of Restorative and Aesthetic Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Jonas Bianchi
- Department of Orthodontics, University of the Pacific, Arthur Dugoni School of Dentistry, San Francisco, CA, United States
| | - Tengfei Li
- Department of Radiology and Biomedical Research Imaging Center, University of North, Chapel Hill, NC, United States
| | - Antonio Ruellas
- Department of Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcela Gurgel
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - Erika Benavides
- Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, MI, United States
| | - Fabiana Soki
- Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, MI, United States
| | - Lucia Cevidanes
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, United States
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Warner E, Al-Turkestani N, Bianchi J, Gurgel ML, Cevidanes L, Rao A. Predicting Osteoarthritis of the Temporomandibular Joint Using Random Forest with Privileged Information. ETHICAL AND PHILOSOPHICAL ISSUES IN MEDICAL IMAGING, MULTIMODAL LEARNING AND FUSION ACROSS SCALES FOR CLINICAL DECISION SUPPORT, AND TOPOLOGICAL DATA ANALYSIS FOR BIOMEDICAL IMAGING : 1ST INTERNATIONAL WORKSHOP, EPIMI 2022, 12TH INTERNA... 2022; 13755:77-86. [PMID: 37416761 PMCID: PMC10323493 DOI: 10.1007/978-3-031-23223-7_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
Osteoarthritis of the temporomandibular joint (TMJ OA) is the most common disorder of the TMJ. A clinical decision support (CDS) system designed to detect TMJ OA could function as a useful screening tool as part of regular check-ups to detect early onset. This study implements a CDS concept model based on Random Forest and dubbed RF+ to predict TMJ OA with the hypothesis that a model which leverages high-resolution radiological and biomarker data in training only can improve predictions compared with a baseline model which does not use privileged information. We found that the RF+ model can outperform the baseline model even when privileged features are not of gold standard quality. Additionally, we introduce a novel method for post-hoc feature analysis, finding shortRunHighGreyLevelEmphasis of the lateral condyles and joint distance to be the most important features from the privileged modalities for predicting TMJ OA.
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Affiliation(s)
- Elisa Warner
- University of Michigan, Ann Arbor, MI 48109, USA
| | - Najla Al-Turkestani
- University of Michigan, Ann Arbor, MI 48109, USA
- King Abdulaziz University, Jeddah 22254, Saudi Arabia
| | - Jonas Bianchi
- University of the Pacific, San Francisco, CA 94103, USA
| | | | | | - Arvind Rao
- University of Michigan, Ann Arbor, MI 48109, USA
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González-Garrido L, Gómez-González S, Gonzalo-Orden JM, Wasterlain SN. Multi-headed (bifid and trifid) mandibular condyles in archaeological contexts: Two posttraumatic cases. Arch Oral Biol 2021; 134:105326. [PMID: 34871890 DOI: 10.1016/j.archoralbio.2021.105326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 11/02/2022]
Abstract
OBJECTIVE Bifid and trifid mandibular condyles are infrequent morphological alterations of the mandibular condyle. With the aim of better identifying its possible causing factors in the past and provide clues on the potential types and severities of joint dysfunction that may occur if clinical intervention is not undertaken, two archaeological cases of multi-headed mandibular condyles are presented, and their possible aetiology and pathogenesis are discussed. DESIGN In this study, 143 adult mandibles recovered in the northwest of Spain were examined: 91 exhumed from San Juan Bautista church (Guardo, Palencia; 16th-19th centuries), and 52 from San Salvador de Palat de Rey church (León, 13th-19th centuries). All mandibles were observed macroscopically for the presence of any morphological and/or pathological alterations. When justified, the mandibles were also scrutinized through computed tomography. RESULTS Two isolated mandibles (n = 1, Palencia; n = 1, León) with multi-headed mandibular condyles (bifid and trifid) were identified. The computed tomography scan of the affected mandibles revealed alterations compatible with traumatic events, namely line fractures and deformations at the angle of the mandible. CONCLUSIONS Both the bifid and trifid mandibular condyles here described probably result from traumatic events during childhood leading to a posttraumatic deformation. Although no severe impairment of mandibular use was identified, some asymmetries probably resulted in some sort of malfunction, with TMJ-OA and gonial angle eversion as supporting evidence. Nevertheless, the degree of bone remodelling observed indicates that both individuals lived long after the traumatic occurrence.
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Affiliation(s)
- Laura González-Garrido
- Área de Antropología Física, Departamento de Biodiversidad y Gestión Ambiental, Universidad de León, Campus de Vegazana, 24071 León, Spain; Institute of Biomedicine (IBIOMED), Universidad de León, Campus de Vegazana, 24071 León, Spain; University of Coimbra, Research Centre for Anthropology and Health (CIAS), Department of Life Sciences, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
| | - Susana Gómez-González
- Área de Antropología Física, Departamento de Biodiversidad y Gestión Ambiental, Universidad de León, Campus de Vegazana, 24071 León, Spain; Facultad de Humanidades y Ciencias Sociales, Universidad Isabel I, www.ui1.es, Spain.
| | | | - Sofia N Wasterlain
- University of Coimbra, Research Centre for Anthropology and Health (CIAS), Department of Life Sciences, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
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Fan Y, Cui C, Li P, Bi R, Lyu P, Li Y, Zhu S. Fibrocartilage Stem Cells in the Temporomandibular Joint: Insights From Animal and Human Studies. Front Cell Dev Biol 2021; 9:665995. [PMID: 33987185 PMCID: PMC8111285 DOI: 10.3389/fcell.2021.665995] [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: 02/09/2021] [Accepted: 04/06/2021] [Indexed: 02/05/2023] Open
Abstract
Temporomandibular disorders (TMD) are diseases involving the temporomandibular joint (TMJ), masticatory muscles, and osseous components. TMD has a high prevalence, with an estimated 4.8% of the U.S. population experiencing signs and symptoms, and represents a financial burden to both individuals and society. During TMD progression, the most frequently affected site is the condylar cartilage. Comprising both fibrous and cartilaginous tissues, condylar cartilage has restricted cell numbers but lacks a vascular supply and has limited regenerative properties. In 2016, a novel stem cell niche containing a reservoir of fibrocartilage stem cells (FCSCs) was discovered in the condylar cartilage of rats. Subsequently, FCSCs were identified in mouse, rabbit, and human condylar cartilage. Unlike mesenchymal stem cells or other tissue-specific stem/progenitor cells, FCSCs play a unique role in the development and regeneration of fibrocartilage. More importantly, engraftment treatment of FCSCs has been successfully applied in animal models of TMD. In this context, FCSCs play a major role in the regeneration of newly formed cartilage. Furthermore, FCSCs participate in the regeneration of intramembranous bone by interacting with endothelial cells in bone defects. This evidence highlights the potential of FCSCs as an ideal stem cell source for the regeneration of oral maxillofacial tissue. This review is intended to detail the current knowledge of the characteristics and function of FCSCs in the TMJ, as well as the potential therapeutic applications of FCSCs. A deep understanding of the properties of FCSCs can thus inform the development of promising, biologically based strategies for TMD in the future.
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Affiliation(s)
- Yi Fan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chen Cui
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Province Key Laboratory of Stomatology, Guangzhou, China
| | - Peiran Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ruiye Bi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ping Lyu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yanxi Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Songsong Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Yu X, Hu Y, Zou L, Yan S, Zhu H, Zhang K, Liu W, He D, Yin J. A bilayered scaffold with segregated hydrophilicity-hydrophobicity enables reconstruction of goat hierarchical temporomandibular joint condyle cartilage. Acta Biomater 2021; 121:288-302. [PMID: 33238194 DOI: 10.1016/j.actbio.2020.11.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/10/2020] [Accepted: 11/18/2020] [Indexed: 12/27/2022]
Abstract
Temporomandibular joint (TMJ) supports chewing, talking or other daily oral activities. So far, it still remains a great challenge to treat the defected TMJ condyle cartilage through tissue engineering technology. Herein, a bilayered scaffold is designed to fully reconstruct the different cartilage matrices of TMJ condyle under same induction condition. The bilayered scaffold with segregated hydrophobicity-hydrophilicity in top and bottom layer is prepared from a low and high content of polyethylene glycol (PEG) crosslinked poly (L-glutamic acid)-g-polycaprolactone (PLGA-g-PCL). The hydrophobic aggregates in top layer support the adhesion and spread of bone mesenchymal stem cells (BMSCs), thus inducing the differentation towards fibrocartilage; while aggregates (spheroids) are formed on the hydrophlic bottom layer, showing a preferable hyaline differentiation pathway under same chondrogenic induction in vitro. After 14 d in vitro induction, the scaffold/BMSCs construct is implanted in goat TMJ condyle defects. The post-operative outcome after 2 months demonstrates that the defects are fully covered by neo-cartilage. And the regenerated hierarchical TMJ condyle cartilage perfectly consist of ordered fibrocartilage and hyaline cartilage, which is same as natural condyle cartilage. These results corroborate that this bilayered scaffold with segregated hydrophilicity-hydrophobicity carrying induced BMSCs is a promising for treatment of TMJ condyle cartilage defects.
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Kattiney de Oliveira L, Fernandes Neto AJ, Moraes Mundim Prado I, Guimarães Henriques JC, Beom Kim K, de Araújo Almeida G. Evaluation of the condylar position in younger and older adults with or without temporomandibular symptoms by using cone beam computed tomography. J Prosthet Dent 2020; 127:445-452. [PMID: 33317831 DOI: 10.1016/j.prosdent.2020.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 10/22/2022]
Abstract
STATEMENT OF PROBLEM Recent studies in young adults have questioned the influence of discrepancies between central and maximal intercuspal positions in temporomandibular disorders (TMDs). However, whether this finding was because this type of etiologic agent requires time for the development of changes in the condylar position is unclear. PURPOSE The purpose of this clinical study was to use cone beam computed tomography (CBCT) to evaluate the presence or absence of discrepancies between the centric relation (CR) and maximum intercuspation (MI) in younger and older adults in populations with or without TMDs. MATERIAL AND METHODS The sample was composed of 80 volunteers, 40 younger individuals aged 18 to 25 years (27 women and 13 men), half with and half without TMD symptoms, and 40 older participants aged 35 to 50 years (30 women and 10 men), half with and half without TMD symptoms. The TMD symptoms were diagnosed by using the diagnostic (standard) criteria for TMD research (RDC/TMD). Two CBCT scans were performed on each participant, one in MI and another in CR. Measurements of the joint space were performed in coronal and sagittal cuts of the temporomandibular joints, and the collected data were statistically analyzed by using the Mann-Whitney U test (α=.05). RESULTS No significant differences were found when the CR and MI positions and the presence or absence of TMD symptoms were compared in the younger and older groups. However, when the younger and older groups were compared, significant differences were found in all measures used in this study. CONCLUSIONS The condyle and mandibular fossa do not seem to be influenced by the CR or MI positions or by the presence or absence of TMD symptoms, but age seems to lead to a quantitative increase in the relationship between these structures.
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Affiliation(s)
- Larissa Kattiney de Oliveira
- Postgraduate student, Department of Occlusion, Fixed Prosthodontics and Dental Materials, School of Dentistry, Federal University of Uberlândia (UFU), Uberlandia, Brazil
| | - Alfredo Júlio Fernandes Neto
- Professor, Department of Occlusion, Fixed Prosthodontics and Dental Materials, School of Dentistry, Federal University of Uberlândia (UFU), Uberlândia, Brazil
| | - Isadora Moraes Mundim Prado
- Postgraduate student, Department of Occlusion, Fixed Prosthodontics and Dental Materials, School of Dentistry, Federal University of Uberlândia (UFU), Uberlandia, Brazil
| | | | - Ki Beom Kim
- Professor and Chairman, Department of Orthodontics, Center for Advanced Dental School (CADE), Saint Louis University, Saint Louis, Mo
| | - Guilherme de Araújo Almeida
- Professor, Department of Orthodontics, School of Dentistry, Federal University of Uberlândia (UFU), Uberlândia, Brazil.
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Ulay G, Pekiner FN, Orhan K. Evaluation of the relationship between the degenerative changes and bone quality of mandibular condyle and articular eminence in temporomandibular disorders by cone beam computed tomography. Cranio 2020; 41:218-229. [PMID: 33272140 DOI: 10.1080/08869634.2020.1853307] [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: 10/22/2022]
Abstract
Objective: To evaluate whether there was a relationship between the degenerative bone changes and bone quality of the mandibular condyle and articular eminence in patients with temporomandibular disorder (TMD).Methods: The study group consisted of 100 patients with TMD. "Diagnostic Criteria/TMD" was used to identify the pathologies. Degenerative bone changes and bone qualities were detected by cone beam computed tomography; the bone qualities were classified using the Bone Quality Index (BQI) scale.Results: No statistically significant difference was found between degenerative bone changes and bone quality of the temporomandibular joint (TMJ) according to gender (p > 0.05). However, degenerative bone changes were more frequent than articular eminence in the mandibular condyle. BQI Type III was the most common bone quality among all types of degenerative bone changes.Discussion: Although no causality relationship was found between the bone quality and degenerative bone changes, low bone quality was found in TMD patients.
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Affiliation(s)
- Gamze Ulay
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | - Filiz Namdar Pekiner
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | - Kaan Orhan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.,Ankara University Medical Design Application and Research Center (MEDITAM), Ankara, Turkey
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Bianchi J, Gonçalves JR, de Oliveira Ruellas AC, Ashman LM, Vimort JB, Yatabe M, Paniagua B, Hernandez P, Benavides E, Soki FN, Ioshida M, Cevidanes LHS. Quantitative bone imaging biomarkers to diagnose temporomandibular joint osteoarthritis. Int J Oral Maxillofac Surg 2020; 50:227-235. [PMID: 32605824 DOI: 10.1016/j.ijom.2020.04.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/04/2020] [Accepted: 04/28/2020] [Indexed: 01/27/2023]
Abstract
Bone degradation of the condylar surface is seen in temporomandibular joint osteoarthritis (TMJ OA); however, the initial changes occur in the subchondral bone. This cross-sectional study was performed to evaluate 23 subchondral bone imaging biomarkers for TMJ OA. The sample consisted of high-resolution cone beam computed tomography scans of 84 subjects, divided into two groups: TMJ OA (45 patients with TMJ OA) and control (39 asymptomatic subjects). Six regions of each mandibular condyle scan were extracted for computation of five bone morphometric and 18 grey-level texture-based variables. The groups were compared using the Mann-Whitney U-test, and the receiver operating characteristics (ROC) curve was determined for each variable that showed a statically significance difference. The results showed statistically significant differences in the subchondral bone microstructure in the lateral and central condylar regions between the control and TMJ OA groups (P< 0.05). The area under the ROC curve (AUC) for these variables was between 0.620 and 0.710. In conclusion, 13 imaging bone biomarkers presented an acceptable diagnostic performance for the diagnosis of TMJ OA, indicating that the texture and geometry of the subchondral bone microarchitecture may be useful for quantitative grading of the disease.
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Affiliation(s)
- J Bianchi
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA; Department of Pediatric Dentistry, São Paulo State University (Unesp), School of Dentistry, Araraquara, Sao Paulo, Brazil.
| | - J R Gonçalves
- Department of Pediatric Dentistry, São Paulo State University (Unesp), School of Dentistry, Araraquara, Sao Paulo, Brazil
| | - A C de Oliveira Ruellas
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - L M Ashman
- Oral and Maxillofacial Surgery, Hospital Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - J-B Vimort
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA; Kitware, Inc., Carrboro, North Carolina, USA
| | - M Yatabe
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - B Paniagua
- Kitware, Inc., Carrboro, North Carolina, USA
| | - P Hernandez
- Kitware, Inc., Carrboro, North Carolina, USA
| | - E Benavides
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - F N Soki
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - M Ioshida
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - L H S Cevidanes
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
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Bianchi J, de Oliveira Ruellas AC, Gonçalves JR, Paniagua B, Prieto JC, Styner M, Li T, Zhu H, Sugai J, Giannobile W, Benavides E, Soki F, Yatabe M, Ashman L, Walker D, Soroushmehr R, Najarian K, Cevidanes LHS. Osteoarthritis of the Temporomandibular Joint can be diagnosed earlier using biomarkers and machine learning. Sci Rep 2020; 10:8012. [PMID: 32415284 PMCID: PMC7228972 DOI: 10.1038/s41598-020-64942-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/21/2020] [Indexed: 12/26/2022] Open
Abstract
After chronic low back pain, Temporomandibular Joint (TMJ) disorders are the second most common musculoskeletal condition affecting 5 to 12% of the population, with an annual health cost estimated at $4 billion. Chronic disability in TMJ osteoarthritis (OA) increases with aging, and the main goal is to diagnosis before morphological degeneration occurs. Here, we address this challenge using advanced data science to capture, process and analyze 52 clinical, biological and high-resolution CBCT (radiomics) markers from TMJ OA patients and controls. We tested the diagnostic performance of four machine learning models: Logistic Regression, Random Forest, LightGBM, XGBoost. Headaches, Range of mouth opening without pain, Energy, Haralick Correlation, Entropy and interactions of TGF-β1 in Saliva and Headaches, VE-cadherin in Serum and Angiogenin in Saliva, VE-cadherin in Saliva and Headaches, PA1 in Saliva and Headaches, PA1 in Saliva and Range of mouth opening without pain; Gender and Muscle Soreness; Short Run Low Grey Level Emphasis and Headaches, Inverse Difference Moment and Trabecular Separation accurately diagnose early stages of this clinical condition. Our results show the XGBoost + LightGBM model with these features and interactions achieves the accuracy of 0.823, AUC 0.870, and F1-score 0.823 to diagnose the TMJ OA status. Thus, we expect to boost future studies into osteoarthritis patient-specific therapeutic interventions, and thereby improve the health of articular joints.
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Affiliation(s)
- Jonas Bianchi
- University of Michigan, Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Ann Arbor, MI, 48109, USA.
- São Paulo State University (UNESP), Department of Pediatric Dentistry, School of Dentistry, Araraquara, SP, 14801-385, Brazil.
| | | | - João Roberto Gonçalves
- São Paulo State University (UNESP), Department of Pediatric Dentistry, School of Dentistry, Araraquara, SP, 14801-385, Brazil
| | | | - Juan Carlos Prieto
- University of North Carolina, Department of Psychiatry and Computer Science, Chapel Hill, NC, 27516, USA
| | - Martin Styner
- University of North Carolina, Department of Psychiatry and Computer Science, Chapel Hill, NC, 27516, USA
| | - Tengfei Li
- University of North Carolina, Department of Biostatistics, Chapel Hill, NC, 27516, USA
| | - Hongtu Zhu
- University of North Carolina, Department of Biostatistics, Chapel Hill, NC, 27516, USA
| | - James Sugai
- University of Michigan, Department of Periodontics and Oral Medicine, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - William Giannobile
- University of Michigan, Department of Periodontics and Oral Medicine, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Erika Benavides
- University of Michigan, Department of Periodontics and Oral Medicine, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Fabiana Soki
- University of Michigan, Department of Periodontics and Oral Medicine, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Marilia Yatabe
- University of Michigan, Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Lawrence Ashman
- University of Michigan, Department of Oral and Maxillofacial Surgery and Hospital Dentistry, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - David Walker
- University of North Carolina, Department of Orthodontics, Chapel Hill, NC, 27516, USA
| | - Reza Soroushmehr
- University of Michigan, Center for Integrative Research in Critical Care and Michigan Institute for Data Science, Department of Computational Medicine and Bioinformatics, Ann Arbor, MI, 48109, USA
| | - Kayvan Najarian
- University of Michigan, Center for Integrative Research in Critical Care and Michigan Institute for Data Science, Department of Computational Medicine and Bioinformatics, Ann Arbor, MI, 48109, USA
| | - Lucia Helena Soares Cevidanes
- University of Michigan, Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Ann Arbor, MI, 48109, USA
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Stone JH, Nelson GC, Fitzpatrick SM. Temporomandibular joint osteoarthritis at Chelechol ra Orrak, Palau. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2020; 28:20-31. [PMID: 31902741 DOI: 10.1016/j.ijpp.2019.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 12/04/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To explore the frequency and severity of temporomandibular joint osteoarthritis (TMJ-OA) and its causative factors in a skeletal assemblage from the prehistoric site of Chelechol ra Orrak, Palau, western Micronesia. MATERIALS 50 temporomandibular joint surfaces (mandibular condyles and articular eminences), representing a minimum of 22 adult individuals, 17 of which retain teeth. METHODS Joint surfaces were macroscopically evaluated for characteristics associated with TMJ-OA and joint morphology. Dental remains were scored for tooth wear and staining. RESULTS Nine individuals (40.1 %) displayed lesions typical of TMJ-OA. The strongest associations were between tooth wear and TMJ-OA. CONCLUSIONS Indirect effects of parafunctional dental activity appear to be a factor in TMJ-OA frequency at Chelechol ra Orrak. While betel nut chewing may be one of those activities, it does not appear to be solely driving the presence of TMJ-OA. SIGNIFICANCE This study highlights the association between a specific parafunctional use of the temporomandibular joint and the potential pathological consequences. It also reinforces the need to carefully evaluate the archaeological context of skeletal remains in order to evaluate specific etiological factors in the presence of TMJ-OA in present and past populations. LIMITATIONS Sample sizes are limited in this study. This will increase as excavations continue. SUGGESTIONS FOR FURTHER RESEARCH Because dental occlusion appears to be associated with TMJ-OA, focus on dental conditions affecting occlusal patterns, such as third molar agenesis, antemortem tooth loss, and malocclusion, and their relationship to TMJ-OA frequency, are recommended.
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Affiliation(s)
- Jessica H Stone
- Department of Anthropology, University of Oregon, Eugene, OR, United States.
| | - Greg C Nelson
- Department of Anthropology, University of Oregon, Eugene, OR, United States; Museum of Natural and Cultural History, University of Oregon, Eugene, OR, United States
| | - Scott M Fitzpatrick
- Department of Anthropology, University of Oregon, Eugene, OR, United States; Museum of Natural and Cultural History, University of Oregon, Eugene, OR, United States
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Becker SK. Evaluating elbow osteoarthritis within the prehistoric Tiwanaku state using generalized estimating equations (GEE). AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 169:186-196. [PMID: 30821354 DOI: 10.1002/ajpa.23806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 01/26/2019] [Accepted: 02/08/2019] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Studies of osteoarthritis (OA) in human skeletal remains can come with scalar problems. If OA measurement is noted as present or absent in one joint, like the elbow, results may not identify specific articular pathology data and the sample size may be insufficient to address research questions. If calculated on a per data point basis (i.e., each articular surface within a joint), results may prove too data heavy to comprehensively understand arthritic changes, or one individual with multiple positive scores may skew results and violate the data independence required for statistical tests. The objective of this article is to show that the statistical methodology Generalized Estimating Equations (GEE) can solve scalar issues in bioarchaeological studies. MATERIALS AND METHODS Using GEE, a population-averaged statistical model, 1,195 adults from the core and one colony of the prehistoric Tiwanaku state (AD 500-1,100) were evaluated bilaterally for OA on the seven articular surfaces of the elbow joint. RESULTS GEE linked the articular surfaces within each individual specimen, permitting the largest possible unbiased dataset, and showed significant differences between core and colony Tiwanaku peoples in the overall elbow joint, while also pinpointing specific articular surfaces with OA. Data groupings by sex and age at death also demonstrated significant variation. A pattern of elbow rotation noted for core Tiwanaku people may indicate a specific pattern of movement. DISCUSSION GEE is effective and should be encouraged in bioarchaeological studies as a way to address scalar issues and to retain all pathology information.
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Affiliation(s)
- Sara K Becker
- Department of Anthropology, University of California, Riverside, Riverside, California
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15
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Dobson M, Waldron T. SCJ osteoarthritis: The significance of joint surface location for diagnosis. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2019; 24:48-51. [PMID: 30278426 DOI: 10.1016/j.ijpp.2018.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 06/08/2023]
Abstract
An evaluation of the method used to diagnose sternoclavicular joint (SCJ) osteoarthritis (OA) in skeletal remains is presented, with particular attention given to the anatomy of the joint. The current palaeopathological diagnostic criteria used to identify SCJ OA were found to be appropriate for both the sternal and clavicular surfaces of the SCJ, with eburnation indicating perforation of the intra-articular disc and advanced disease. Eburnation was found to occur rarely in the SCJ, and if used as the sole diagnostic criterion would result in an underestimation of SCJ OA prevalence in archaeological assemblages. A key finding was the identification of changes characteristic of OA but confined to the attachment zone of the intra-articular disc on the clavicular surface of the SCJ. As this area of the joint is non-articular, and not normally covered with articular cartilage, a diagnosis of OA would be inaccurate and instead it should be considered as an enthesopathy. It is likely that SCJ OA has been incorrectly identified and over-diagnosed in the archaeological record in the past. More histological research into the disc attachment and its degeneration is required before this can be confirmed.
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Affiliation(s)
- Melissa Dobson
- UCL Institute of Archaeology, University College London, London, WC1H 0PY, UK.
| | - Tony Waldron
- UCL Institute of Archaeology, University College London, London, WC1H 0PY, UK
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Activation of β-catenin signaling in aggrecan-expressing cells in temporomandibular joint causes osteoarthritis-like defects. Int J Oral Sci 2018; 10:13. [PMID: 29686224 PMCID: PMC5966811 DOI: 10.1038/s41368-018-0016-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 02/05/2023] Open
Abstract
β-Catenin plays a critical role in cartilage formation and development. To further understand the role of β-catenin in osteoarthritis (OA) development in temporomandibular joint (TMJ), we have generated β-catenin conditional activation mice (β-cat(ex3)Agc1CreER) by breeding Agc1-CreER mice with β-cateninflox(ex3)/+ mice. Results of histologic analysis showed the progressive TMJ defects in 3- and 6-month-old β-cat(ex3)Agc1CreER mice (tamoxifen induction was performed at 2 weeks of age), including decreased chondrocyte numbers in the superficial layer associated with less Alcian blue staining, increased numbers of hypertrophic chondrocytes in deep layers, and rough articular surface. Compared to the TMJ phenotype of β-cat(ex3)Col2CreER mice, β-cat(ex3)Agc1CreER mice showed much severe morphological defects in the superficial layer of TMJ. This may reflect that Agc1-CreER mice could efficiently target cells in the superficial layer of TMJ. Results of immunostaining showed significantly increased expression of MMP13, Col-X, Adamts4, and Adamts5 in TMJ of β-cat(ex3)Agc1CreER mice. Results of proliferating cell nuclear antigen (PCNA), Ki67, and terminal deoxinucleotidyl transferase-mediated dUTP-fluorescein nick end labeling (TUNEL) staining further demonstrated that cell proliferation was decreased and cell apoptosis was increased in condylar cartilage of β-cat(ex3)Agc1CreER mice. Our findings indicate that abnormal upregulation of β-catenin in TMJ leads to defects assembling to OA-like phenotype, further demonstrating that β-catenin plays a critical role in TMJ pathogenesis. Therapies targeting a cartilage-regulating signaling protein could mitigate painful damage inflicted on the jaw by age-related osteoarthritis. Many older individuals experience degeneration of the temporomandibular joint (TMJ), where the upper and lower jaw connect. Researchers led by Di Chen of Rush University Medical School in Chicago, USA, have developed a genetically-modified mouse model that reveals a likely molecular driver for TMJ osteoarthritis. Previous studies have implicated a protein called β-catenin in this process, and Chen’s team generated mice in which β-catenin levels can be selectively boosted in cartilage-forming cells at skeletal joints. This increased β-catenin markedly altered the organization of TMJ cartilage, with decreased cell proliferation and increased cell death. The effects were strikingly similar to human osteoarthritis, and the researchers hypothesize that compounds that counter β-catenin could offer useful treatments for this condition.
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Viciano J, D'Anastasio R. Hemifacial microsomia (oculo-auriculo-vertebral spectrum) in an individual from the Teramo Sant'Anna archaeological site (7th-12th centuries of the Common Era, Italy). Arch Oral Biol 2018; 91:23-34. [PMID: 29653314 DOI: 10.1016/j.archoralbio.2018.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/09/2018] [Accepted: 04/05/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND This study is based in an analysis of the skeletal remains of an adult male from the Teramo Sant'Anna archaeological site (7th-12th centuries of the Common Era, Teramo, Italy). RESULTS AND DISCUSSION The individual shows distinct abnormalities that principally involve asymmetric hypoplasia and dysmorphogenesis of the facial skeleton. The combination of these findings and the absence of abnormalities of the spine strongly suggest diagnosis of the congenital malformation known as hemifacial microsomia. This very heterogeneous syndrome affects primarily aural, ocular, oral and mandibular development. Despite the lack of clinical information and the absence of soft tissue, it was possible to perform a differential diagnosis for this palaeopathological case. Mastication was probably altered considering that the mandible is extremely asymmetric and lacks true condyles. The temporomandibular joints are present, but the right one is hypoplastic and abnormal in shape. There is evidence of bilateral dislocation, and the facial muscles are hypertrophic. CONCLUSIONS This case represents an important contribution to the palaeopathological literature because this is an uncommon condition that has not been widely documented in ancient skeletal remains.
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Affiliation(s)
- Joan Viciano
- Operative Unit of Anthropology, Department of Medicine and Aging Sciences, 'G. d'Annunzio' University of Chieti-Pescara, Piazza Trento e Trieste 1, 66100 Chieti, Italy.
| | - Ruggero D'Anastasio
- Operative Unit of Anthropology, Department of Medicine and Aging Sciences, 'G. d'Annunzio' University of Chieti-Pescara, Piazza Trento e Trieste 1, 66100 Chieti, Italy
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Mesenchymal Stem Cells for Cartilage Regeneration of TMJ Osteoarthritis. Stem Cells Int 2017; 2017:5979741. [PMID: 29123550 PMCID: PMC5662817 DOI: 10.1155/2017/5979741] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 09/06/2017] [Indexed: 02/05/2023] Open
Abstract
Temporomandibular joint osteoarthritis (TMJ OA) is a degenerative disease, characterized by progressive cartilage degradation, subchondral bone remodeling, synovitis, and chronic pain. Due to the limited self-healing capacity in condylar cartilage, traditional clinical treatments have limited symptom-modifying and structure-modifying effects to restore impaired cartilage as well as other TMJ tissues. In recent years, stem cell-based therapy has raised much attention as an alternative approach towards tissue repair and regeneration. Mesenchymal stem cells (MSCs), derived from the bone marrow, synovium, and even umbilical cord, play a role as seed cells for the cartilage regeneration of TMJ OA. MSCs possess multilineage differentiation potential, including chondrogenic differentiation as well as osteogenic differentiation. In addition, the trophic modulations of MSCs exert anti-inflammatory and immunomodulatory effects under aberrant conditions. Furthermore, MSCs combined with appropriate scaffolds can form cartilaginous or even osseous compartments to repair damaged tissue and impaired function of TMJ. In this review, we will briefly discuss the pathogenesis of cartilage degeneration in TMJ OA and emphasize the potential sources of MSCs and novel approaches for the cartilage regeneration of TMJ OA, particularly focusing on the MSC-based therapy and tissue engineering.
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Biomechanical properties of murine TMJ articular disc and condyle cartilage via AFM-nanoindentation. J Biomech 2017; 60:134-141. [PMID: 28688538 DOI: 10.1016/j.jbiomech.2017.06.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/15/2017] [Accepted: 06/16/2017] [Indexed: 11/24/2022]
Abstract
This study aims to quantify the biomechanical properties of murine temporomandibular joint (TMJ) articular disc and condyle cartilage using AFM-nanoindentation. For skeletally mature, 3-month old mice, the surface of condyle cartilage was found to be significantly stiffer (306±84kPa, mean±95% CI) than those of the superior (85±23kPa) and inferior (45±12kPa) sides of the articular disc. On the disc surface, significant heterogeneity was also detected across multiple anatomical sites, with the posterior end being the stiffest and central region being the softest. Using SEM, this study also found that the surfaces of disc are composed of anteroposteriorly oriented collagen fibers, which are sporadically covered by thinner random fibrils. Such fibrous nature results in both an F-D3/2 indentation response, which is a typical Hertzian response for soft continuum tissue under a spherical tip, and a linear F-D response, which is typical for fibrous tissues, further signifying the high degree of tissue heterogeneity. In comparison, the surface of condyle cartilage is dominated by thinner, randomly oriented collagen fibrils, leading to Hertzian-dominated indentation responses. As the first biomechanical study of murine TMJ, this work will provide a basis for future investigations of TMJ tissue development and osteoarthritis in various murine TMJ models.
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20
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Zhang X, Chen F, Chen L, Li B, Xu S, Cui D, Yu L, Liu M, Shi X, Li Q, Li Y. Symptoms and signs of temporomandibular disorders in patients with knee osteoarthritis. Int Dent J 2017; 67:78-84. [DOI: 10.1111/idj.12262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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21
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Ngamsom S, Nakamura S, Sakamoto J, Kotaki S, Tetsumura A, Kurabayashi T. The intravoxel incoherent motion MRI of lateral pterygoid muscle: a quantitative analysis in patients with temporomandibular joint disorders. Dentomaxillofac Radiol 2017; 46:20160424. [PMID: 28332854 DOI: 10.1259/dmfr.20160424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To quantitatively evaluate diffusion and perfusion status of lateral pterygoid muscle (LPM) in patients with temporomandibular joint disorder (TMD) by intravoxel incoherent motion (IVIM) imaging and to correlate with findings on temporomandibular joints (TMJs) by conventional MRI. METHODS 42 patients with TMD underwent MRI. To assess IVIM parameters, diffusion-weighted imaging was obtained by spin-echo-based single-shot echoplanar imaging. Regions of interest were created on all diffusion-weighted images of the superior belly of the lateral pterygoid (SLP) and inferior belly of the lateral pterygoid (ILP) at b-values 0-500 s mm-2. Then, IVIM parameters, diffusion (D) and perfusion (f) were calculated using biexponential fittings. The correlation of these values with conventional MRI findings on TMJs was investigated. RESULTS For SLP, the f parameter in TMJs with anterior disc displacement without reduction was significantly higher than that in normal ones (p = 0.015). It was also significantly higher in TMJs with joint effusion than in those without (p = 0.016). On the other hand, for both SLP and ILP, the D parameter significantly increased in TMJs with osteoarthritis compared with those without (p = 0.015 and p = 0.022, respectively). CONCLUSIONS Pathological changes of LPM in patients with TMD may be quantitatively evaluated by IVIM parameters.
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Affiliation(s)
- Supak Ngamsom
- 1 Oral and Maxillofacial Radiology Department, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,2 Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Shin Nakamura
- 1 Oral and Maxillofacial Radiology Department, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Junichiro Sakamoto
- 1 Oral and Maxillofacial Radiology Department, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Shinya Kotaki
- 1 Oral and Maxillofacial Radiology Department, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Akemi Tetsumura
- 1 Oral and Maxillofacial Radiology Department, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tohru Kurabayashi
- 1 Oral and Maxillofacial Radiology Department, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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22
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Cheverko CM, Hubbe M. Comparisons of statistical techniques to assess age-related skeletal markers in bioarchaeology. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2017; 163:407-416. [DOI: 10.1002/ajpa.23206] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 01/14/2017] [Accepted: 02/25/2017] [Indexed: 12/17/2022]
Affiliation(s)
| | - Mark Hubbe
- Department of Anthropology; The Ohio State University; Columbus Ohio
- Instituto de Investigaciones Arqueológicas y Museo; Universidad Católica del Norte; Chile
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Skull 5 from Dmanisi: Descriptive anatomy, comparative studies, and evolutionary significance. J Hum Evol 2017; 104:50-79. [PMID: 28317556 DOI: 10.1016/j.jhevol.2017.01.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 11/21/2022]
Abstract
A fifth hominin skull (cranium D4500 and mandible D2600) from Dmanisi is massively constructed, with a large face and a very small brain. Traits documented for the first time in a basal member of the Homo clade include the uniquely low ratio of endocranial volume to basicranial width, reduced vertex height, angular vault profile, smooth nasal sill coupled with a long and sloping maxillary clivus, elongated palate, and tall mandibular corpus. The convex clivus and receding symphysis of skull 5 produce a muzzle-like form similar to that of Australopithecus afarensis. While the Dmanisi cranium is very robust, differing from OH 13, OH 24, and KNM-ER 1813, it resembles Homo habilis specimens in the "squared off" outline of its maxilla in facial view, maxillary sulcus, rounded and receding zygomatic arch, and flexed zygomaticoalveolar pillar. These characters distinguish early Homo from species of Australopithecus and Paranthropus. Skull 5 is unlike Homo rudolfensis cranium KNM-ER 1470. Although it appears generally primitive, skull 5 possesses a bar-like supraorbital torus, elongated temporal squama, occipital transverse torus, and petrotympanic traits considered to be derived for Homo erectus. As a group, the Dmanisi crania and mandibles display substantial anatomical and metric variation. A key question is whether the fossils document age-related growth and sex dimorphism within a single population, or whether two (or more) distinct taxa may be present at the site. We use the coefficient of variation to compare Dmanisi with Paranthropus boisei, H. erectus, and recent Homo sapiens, finding few signals that the Dmanisi sample is excessively variable in comparison to these reference taxa. Using cranial measurements and principal components analysis, we explore the proposal that the Dmanisi skulls can be grouped within a regionally diverse hypodigm for H. erectus. Our results provide only weak support for this hypothesis. Finally, we consider all available morphological and paleobiological evidence in an attempt to clarify the phyletic relationship of Dmanisi to Homo species evolving >2.0 to 1.0 Ma.
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Brennaman AL, Love KR, Bethard JD, Pokines JT. A Bayesian Approach to Age-at-Death Estimation from Osteoarthritis of the Shoulder in Modern North Americans. J Forensic Sci 2016; 62:573-584. [PMID: 27930820 DOI: 10.1111/1556-4029.13327] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 05/31/2016] [Accepted: 08/07/2016] [Indexed: 12/22/2022]
Abstract
Osteoarthritis (OA) is a marker of degeneration within the skeleton, frequently associated with age. This study quantifies the correlation between OA and age-at-death and investigates the utility of shoulder OA as a forensic age indicator using a modern North American sample of 206 individuals. Lipping, surface porosity, osteophyte formation, eburnation, and percentage of joint surface affected were recorded on an ordinal scale and summed to create composite scores that were assigned a specific phase. Spearman's correlation indicated a positive relationship between each composite score and age (right shoulder = 0.752; left shoulder = 0.734). Transition analysis revealed a tendency toward earlier degeneration of the right shoulder. Bayesian statistics generated phase-related age estimates based on highest posterior density regions. Best age estimates were into the seventh decade at the 90th and 50th percentile. The proposed method supplements traditional techniques by providing age estimates beyond a homogenous 50+ age cohort.
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Affiliation(s)
- Ashley L Brennaman
- Department of Anthropology, University of Wisconsin Milwaukee, 3413 North Downer Avenue, Sabin Hall 390, Milwaukee, WI, 53211
| | - Kim R Love
- Owner and Lead Consultant, K. R. Love Quantitative Consulting and Collaboration, 337 South Milledge Avenue, Suite 208, Athens, GA, 30605
| | - Jonathan D Bethard
- Department of Anthropology, University of South Florida, Tampa, FL, 33620
| | - James T Pokines
- Department of Anatomy & Neurobiology, Boston University School of Medicine, 72 East Concord Street, L 1004, Boston, MA, 02118
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25
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Kim K, Wojczyńska A, Lee JY. The incidence of osteoarthritic change on computed tomography of Korean temporomandibular disorder patients diagnosed by RDC/TMD; a retrospective study. Acta Odontol Scand 2016; 74:337-42. [PMID: 26881919 DOI: 10.3109/00016357.2015.1136678] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Objective Osteoarthritis (OA) of the temporomandibular joint (TMJ) is generally thought to be an age-related disease like those of other joints. This study aims to investigate the incidence of computed tomographic (CT) OA changes in Korean temporomandibular disorder (TMD) patients diagnosed by the Research Diagnostic Criteria for TMD (RDC/TMD). Materials and methods The clinical records and radiographs of 1038 TMD patients (297 men and 741 women with mean age 31.1 ± 17.4 and 34.0 ± 16.2, respectively) diagnosed based on RDC/TMD Axis I in 2010 were reviewed. Results The incidence rate of OA changes in TMD patients is estimated to 27.3%, and higher in women than in men (15.5% in men and 32.0% in women) by 2.3 odds (p < 0.001). It has no correlation with age, showing an almost flat incidence rate throughout the age from the 2nd decade and has no correlation as well with pain or disc displacement diagnosed according to RDC/TMD, while arthrosis/arthritis diagnosis based on RDC/TMD supplemented by plain radiographs shows high risk of OA changes on CT by 38.8 odds (p < 0.05). Conclusions These results imply that the OA changes in young Korean TMD patients are as common as in the old and have no correlation with clinical pain and noise. Considered with high prevalence of TMDs known in the young population, the overall/absolute OA changes in the TMJ can be even higher in the young than in the old population, not like in other joints.
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Affiliation(s)
- Kilyong Kim
- Department of Oral Medicine & Oral Diagnosis, School of Dentistry & Dental Research Institute, Seoul National University, Daehak-Ro 101, Jongno-Gu, Seoul, 110-744, Korea (ROK)
| | - Aleksandra Wojczyńska
- Clinic of Masticatory Disorders, Removable Prosthodontics, Geriatric and Special Care Dentistry, Center of Dental Medicine, University of Zürich, Plattenstrasse 11, CH-8032, Switzerland
| | - Jeong-Yun Lee
- Department of Oral Medicine & Oral Diagnosis, School of Dentistry & Dental Research Institute, Seoul National University, Daehak-Ro 101, Jongno-Gu, Seoul, 110-744, Korea (ROK)
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Park KS, Song HC, Cho SG, Kang SR, Kim J, Jun HM, Song M, Jeong GC, Park HJ, Kwon SY, Min JJ, Bom HHS. Open-Mouth Bone Scintigraphy Is Better than Closed-Mouth Bone Scintigraphy in the Diagnosis of Temporomandibular Osteoarthritis. Nucl Med Mol Imaging 2016; 50:213-8. [PMID: 27540425 DOI: 10.1007/s13139-016-0407-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 01/25/2016] [Accepted: 02/11/2016] [Indexed: 01/24/2023] Open
Abstract
PURPOSE Closed-mouth bone scintigraphy (CM scan) and closed-mouth single-photon emission computed tomography (CM SPECT) are used for conventional evaluation of osteoarthritis of the temporomandibular joint (TMJ). However, the adequacy of open-mouth bone scintigraphy (OM scan) has not yet been evaluated. Therefore, the purpose of this study was to compare the diagnostic performance of CM scan, CM SPECT, and OM scan. METHODS Thirty-six patients with suspicion of an abnormality of the TMJ and who underwent a (99m)Tc-HDP CM scan, CM SPECT, and an OM scan were enrolled. The scans were assessed visually for the presence of positive focal uptake in the TMJ. Osteoarthritis was defined as arthralgia plus crepitus or radiologic signs of arthrosis. RESULTS Of 72 TMJs, 21 (29.2 %) were diagnosed with osteoarthritis. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 90.5 %, 49.0 %, 42.2 %, 92.6 % and 61.1 % for the CM scan, 81.0 %, 58.8 %, 44.7 %, 88.2 % and 65.3 % for CM SPECT, and 81.0 %, 82.4 %, 65.4 %, 91.3 % and 81.9 % for the OM scan, respectively. The accuracy of the OM scan was higher than that of CM SPECT and the CM scans (p = 0.004 and p < 0.001, respectively). CONCLUSIONS The OM scan was more accurate than the conventional CM scan and even CM SPECT for diagnosing TMJ osteoarthritis.
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Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Haeng Man Jun
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Minchul Song
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
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27
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Bechtold TE, Saunders C, Decker RS, Um HB, Cottingham N, Salhab I, Kurio N, Billings PC, Pacifici M, Nah HD, Koyama E. Osteophyte formation and matrix mineralization in a TMJ osteoarthritis mouse model are associated with ectopic hedgehog signaling. Matrix Biol 2016; 52-54:339-354. [PMID: 26945615 DOI: 10.1016/j.matbio.2016.03.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/01/2016] [Accepted: 03/01/2016] [Indexed: 12/28/2022]
Abstract
The temporomandibular joint (TMJ) is a diarthrodial joint that relies on lubricants for frictionless movement and long-term function. It remains unclear what temporal and causal relationships may exist between compromised lubrication and onset and progression of TMJ disease. Here we report that Proteoglycan 4 (Prg4)-null TMJs exhibit irreversible osteoarthritis-like changes over time and are linked to formation of ectopic mineralized tissues and osteophytes in articular disc, mandibular condyle and glenoid fossa. In the presumptive layer of mutant glenoid fossa's articulating surface, numerous chondrogenic cells and/or chondrocytes emerged ectopically within the type I collagen-expressing cell population, underwent endochondral bone formation accompanied by enhanced Ihh expression, became entrapped into temporal bone mineralized matrix, and thereby elicited excessive chondroid bone formation. As the osteophytes grew, the roof of the glenoid fossa/eminence became significantly thicker and flatter, resulting in loss of its characteristic concave shape for accommodation of condyle and disc. Concurrently, the condyles became flatter and larger and exhibited ectopic bone along their neck, likely supporting the enlarged condylar heads. Articular discs lost their concave configuration, and ectopic cartilage developed and articulated with osteophytes. In glenoid fossa cells in culture, hedgehog signaling stimulated chondrocyte maturation and mineralization including alkaline phosphatase, while treatment with hedgehog inhibitor HhAntag prevented such maturation process. In sum, our data indicate that Prg4 is needed for TMJ integrity and long-term postnatal function. In its absence, progenitor cells near presumptive articular layer and disc undergo ectopic chondrogenesis and generate ectopic cartilage, possibly driven by aberrant activation of Hh signaling. The data suggest also that the Prg4-null mice represent a useful model to study TMJ osteoarthritis-like degeneration and clarify its pathogenesis.
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Affiliation(s)
- Till E Bechtold
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Department of Orthodontics and Orofacial Orthopaedics, Center of Dentistry, Oral Medicine and Maxillofacial Surgery, University Hospital Tuebingen, D-72076 Tuebingen, Germany
| | - Cheri Saunders
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Rebekah S Decker
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Hyo-Bin Um
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Naiga Cottingham
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Imad Salhab
- Division of Plastic and Reconstructive Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Naito Kurio
- Division of Plastic and Reconstructive Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Paul C Billings
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Maurizio Pacifici
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Hyun-Duck Nah
- Division of Plastic and Reconstructive Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Eiki Koyama
- Division of Orthopaedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
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28
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Jiang Q, Qiu YT, Chen MJ, Zhang ZY, Yang C. Synovial TGF-β1 and MMP-3 levels and their correlation with the progression of temporomandibular joint osteoarthritis combined with disc displacement: A preliminary study. Biomed Rep 2012; 1:218-222. [PMID: 24648922 DOI: 10.3892/br.2012.41] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 10/12/2012] [Indexed: 11/06/2022] Open
Abstract
Osteoarthritis (OA) is a slow progressing degenerative disease that affects the joints, including the temporomandibular joint. In the present study, transforming growth factor-β1 (TGF-β1) and matrix metalloproteinase 3 (MMP-3) in synovial fluid (SF) were examined in detecting cartilage synthesis and degradation in progression of temporomandibular joint osteoarthritis (TMJ OA) combined with disc displacement (DD) diseases. SF was obtained from 16 patients with TMJ OA combined with DD and 10 normal volunteers. TGF-β1 and MMP-3 levels were measured by enzyme-linked immunosorbent assay. In addition, TMJ OA combined with DD was classified into three stages based on radiographic signs on the preoperative tomograms and surgical findings at operation, and different treatment options were administered according to the stages. SF from TMJs with TMJ OA combined with DD showed higher levels of TGF-β1 and MMP-3 compared with the asymptomatic control TMJs. With the progression of TMJ OA combined with DD, TGF-β1 levels in SF were lower, while MMP-3 levels in SF were significantly higher. In conclusion, these data suggest that MMP-3 is not only involved in the pathological destruction process of TMJ OA combined with DD initially, but also has a positive correlation with the degree of pathological changes. Furthermore, a significant increase of TGF-β1 levels was found in the SF that were able to counteract the deleterious effects of MMP-3 at the early stage of TMJ OA combined DD, providing the scientific basis on repositioning displaced disc as early as possible for these patients.
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Affiliation(s)
- Qian Jiang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China
| | - Ya-Ting Qiu
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China
| | - Min-Jie Chen
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China
| | - Zhi-Yuan Zhang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China
| | - Chi Yang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China
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