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Pagni TC, Cunha JMD, Saez DM, Costa-Neves AD, Kerkis I, Silva MCPD. Nanog, Stat-3, and Sox-5 involvement in human fetal temporomandibular joint late development. J Oral Biol Craniofac Res 2023; 13:636-641. [PMID: 37637855 PMCID: PMC10450518 DOI: 10.1016/j.jobcr.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/14/2023] [Accepted: 08/08/2023] [Indexed: 08/29/2023] Open
Abstract
Background and aim The temporomandibular joint (TMJ) is a synovial joint that allows the complex movements essential for life. It connects the jawbone to the skull, working as a sliding hinge. Moreover, pluripotent stem cells are a source of precursors and tissue-specific cells in developing organisms, however, their biodistribution in developing fetal tissues is weakly studied. The aim of our study was analyse immunohistochemical expression of Nanog, Oct-4, Sox-2 and Stat-3 and Sox-5, in TMJ tissue samples from human fetuses aged between the 12th and 20th weeks of intrauterine life. Materials and methods We fixed and processed TMJ tissue samples from human fetuses, histological sections and immunohistochemical procedures were carried out. Results TMJ histological studies examination did not reveal any difference in the tissue organization between the samples in the studied periods. Immunohistochemical analysis demonstrated that Oct-4 and Sox-2 lack their expression in TMJ. In contrast, Nanog was expressed in nucleous of proliferative layer of mandibular condyle, Stat-3 was expressed in nuclear cells of articular disc, Stat-3 and Sox-5 showed positive nuclear and cytoplasmic immunostaining in codrocyte layers and in ossification areas. Conclusions Nanog acts in maintanence of pluripotency, Stat-3 in articular disc acts as a transcriptional factor. Stat-3 and Sox-2 act in chondrocyte and osteoblast diferentiation. Distribution of the cells, which express Nanog, Stat-3, and Sox-5 in TMJ tissue during fetal development, can help further understand its physiology, pathology, and repairing capacities.
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Affiliation(s)
- Tacia Catharine Pagni
- Departament of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Ed. Leitão da Cunha – Térreo, CEP: 04023-900, São Paulo, SP, Brazil
| | - Juliana Malta da Cunha
- Departament of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Ed. Leitão da Cunha – Térreo, CEP: 04023-900, São Paulo, SP, Brazil
| | - Daniel Martinez Saez
- Departament of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Ed. Leitão da Cunha – Térreo, CEP: 04023-900, São Paulo, SP, Brazil
| | - Adriana da Costa-Neves
- Genetics Laboratory, Instituto Butantan, Av Vital Brazil,1500, Predio Novo-Térreo, CEP: 05503-900, São Paulo, Brazil
| | - Irina Kerkis
- Genetics Laboratory, Instituto Butantan, Av Vital Brazil,1500, Predio Novo-Térreo, CEP: 05503-900, São Paulo, Brazil
| | - Marcelo Cavenaghi Pereira da Silva
- Departament of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Ed. Leitão da Cunha – Térreo, CEP: 04023-900, São Paulo, SP, Brazil
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Dalewski B, Kaczmarek K, Jakubowska A, Szczuchniak K, Pałka Ł, Sobolewska E. COL12A1 Single Nucleotide Polymorphisms rs240736 and rs970547 Are Not Associated with Temporomandibular Joint Disc Displacement without Reduction. Genes (Basel) 2021; 12:genes12050690. [PMID: 34062975 PMCID: PMC8148001 DOI: 10.3390/genes12050690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/29/2021] [Accepted: 05/01/2021] [Indexed: 12/13/2022] Open
Abstract
Temporomandibular disorders (TMDs) may affect up to 25% of the population, with almost 70% of these TMD cases developing malpositioning of the disc over time in what is known as internal derangement (ID). Despite significant efforts, the molecular mechanism underlying disease progression is not yet very well known. In this study, the role of COL12A1 rs970547 and rs240736 polymorphisms as potential genetic factors regulating ID was investigated. The study included 124 Caucasian patients of both sexes after disc displacement without reduction (DDwoR) in either one or two temporomandibular joints (TMJs), either of which meet the criteria for this condition. All patients underwent clinical examination and 3D digital imaging. The COL12A1 rs970547 and rs240736 polymorphisms were evaluated. There were no statistically significant differences in the chi-square test between the study group and healthy controls. The examined COL12A1 rs240736 and rs970547 polymorphisms do not contribute to DDwoR in Polish Caucasians.
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Affiliation(s)
- Bartosz Dalewski
- Department of Dental Prosthetics, Pomeranian Medical University, 70-111 Szczecin, Poland; (B.D.); (E.S.)
| | - Katarzyna Kaczmarek
- Department of Genetics and Pathology, Pomeranian Medical University, 71-252 Szczecin, Poland; (K.K.); (A.J.)
| | - Anna Jakubowska
- Department of Genetics and Pathology, Pomeranian Medical University, 71-252 Szczecin, Poland; (K.K.); (A.J.)
- Independent Laboratory of Molecular Biology and Genetic Diagnostics, Pomeranian Medical University, 71-252 Szczecin, Poland
| | - Kamila Szczuchniak
- Department of Dental Prosthetics, Outpatient Dental Clinic, Pomeranian Medical University, 70-111 Szczecin, Poland
- Correspondence:
| | | | - Ewa Sobolewska
- Department of Dental Prosthetics, Pomeranian Medical University, 70-111 Szczecin, Poland; (B.D.); (E.S.)
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3
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Proteomic Expression Profile in Human Temporomandibular Joint Dysfunction. Diagnostics (Basel) 2021; 11:diagnostics11040601. [PMID: 33800589 PMCID: PMC8066727 DOI: 10.3390/diagnostics11040601] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 01/11/2023] Open
Abstract
Temporomandibular joint dysfunction (TMD) is a multifactorial condition that impairs human’s health and quality of life. Its etiology is still a challenge due to its complex development and the great number of different conditions it comprises. One of the most common forms of TMD is anterior disc displacement without reduction (DDWoR) and other TMDs with distinct origins are condylar hyperplasia (CH) and mandibular dislocation (MD). Thus, the aim of this study is to identify the protein expression profile of synovial fluid and the temporomandibular joint disc of patients diagnosed with DDWoR, CH and MD. Synovial fluid and a fraction of the temporomandibular joint disc were collected from nine patients diagnosed with DDWoR (n = 3), CH (n = 4) and MD (n = 2). Samples were subjected to label-free nLC-MS/MS for proteomic data extraction, and then bioinformatics analysis were conducted for protein identification and functional annotation. The three TMD conditions showed different protein expression profiles, and novel proteins were identified in both synovial fluid and disc sample. TMD is a complex condition and the identification of the proteins expressed in the three different types of TMD may contribute to a better comprehension of how each pathology develops and evolutes, benefitting the patient with a focus–target treatment.
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4
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Carvalho de Moraes LO, Tedesco RC, Arraez-Aybar LA, Klein O, Mérida-Velasco JR, Alonso LG. Development of synovial membrane in the temporomandibular joint of the human fetus. Eur J Histochem 2015; 59:2569. [PMID: 26708184 PMCID: PMC4698616 DOI: 10.4081/ejh.2015.2569] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/04/2015] [Accepted: 11/09/2015] [Indexed: 11/26/2022] Open
Abstract
The development of the synovial membrane was analyzed in serial sections of 21 temporomandibular joints of human fetuses at 9 to 13 weeks of gestation. Sections of two fetuses at 12 weeks of development were used to perform immunohistochemical expression of the markers CD68 and Hsp27 on the synovial lining. Macrophage-like type A and fibroblast-like type B cells, which express CD68 and Hsp27, respectively, were observed at the twelfth week of development. Our results suggest that the development of the synovial membrane is related to the vascularization of the joint and the formation of the articular cavities.
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5
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Musumeci G, Castrogiovanni P, Mazzone V, Szychlinska MA, Castorina S, Loreto C. Histochemistry as a unique approach for investigating normal and osteoarthritic cartilage. Eur J Histochem 2014; 58:2371. [PMID: 24998926 PMCID: PMC4083326 DOI: 10.4081/ejh.2014.2371] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/11/2014] [Indexed: 12/21/2022] Open
Abstract
In this review article, we describe benefits and disadvantages of the established histochemical methods for studying articular cartilage tissue under normal, pathological and experimental conditions. We illustrate the current knowledge on cartilage tissue based on histological and immunohistochemical aspects, and in conclusion we provide a short overview on the degeneration of cartilage, such as osteoarthritis. Adult articular cartilage has low capacity to repair itself, and thus even minor injuries may lead to progressive damage and osteoarthritic joint degeneration, resulting in significant pain and disability. Numerous efforts have been made to implement the knowledge in the study of cartilage in the last years, and histochemistry proved to be an especially powerful tool to this aim.
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6
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Alvez CS, Carvalho de Moraes LO, Marques SR, Tedesco RC, Harb LJC, Rodríguez-Vázquez JF, Mérida-Velasco JR, Alonso LG. Analysis by Light, Scanning, and Transmission Microscopy of the Intima Synovial of the Temporomandibular Joint of Human Fetuses during the Development. ANATOMY RESEARCH INTERNATIONAL 2014; 2014:732720. [PMID: 24527214 PMCID: PMC3914572 DOI: 10.1155/2014/732720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 11/25/2013] [Indexed: 11/18/2022]
Abstract
Objective. To characterize morphologically and ultrastructurally using light microscopy, the scanning electron microscopy and transmission electron microscopy the intima synovial of the temporomandibular joint (TMJ) of human fetuses between the 10th and the 38th week of development. Materials and Methods. The TMJ was dissected bilaterally in 37 human fetuses belonging to the Institute of Embryology of the University Complutense of Madrid and of the Federal University of São Paulo. Results. The outcome by light microscopy showed the morphology of the TMJ and that the formation of inferior joint cavity precedes the superior joint cavity and the presence of blood vessels in the synovial. Conclusion. By scanning and transmission electron microscopy we observed the presence of two well-defined cell types in the intima layer of synovial of the TMJ of human fetuses, macrophage-like type A cell and fibroblast-like type B cell, and the presence of the a third cell type, defined by the name of intermediate lining cell in the intima layer of the synovial.
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Affiliation(s)
- Carlos Sabu Alvez
- Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-900 São Paulo, SP, Brazil
- Departamento de Morfologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | | | - Sergio R. Marques
- Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-900 São Paulo, SP, Brazil
| | - Roberto C. Tedesco
- Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-900 São Paulo, SP, Brazil
| | - Leandro J. C. Harb
- Departamento de Morfologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | | | - Jose R. Mérida-Velasco
- Departamento de Anatomía y Embriología II, Universidad Complutense of Madrid, 28040 Madrid, Spain
| | - Luis Garcia Alonso
- Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-900 São Paulo, SP, Brazil
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7
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Pellicciari C. Histochemistry as an irreplaceable approach for investigating functional cytology and histology. Eur J Histochem 2013; 57:e41. [PMID: 24441194 PMCID: PMC3896043 DOI: 10.4081/ejh.2013.e41] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 12/17/2013] [Indexed: 12/19/2022] Open
Abstract
In agreement with the evolution of histochemistry over the last fifty years and thanks to the impressive advancements in microscopy sciences, the application of cytochemical techniques to light and electron microscopy is more and more addressed to elucidate the functional characteristics of cells and tissue under different physiological, pathological or experimental conditions. Simultaneously, the mere description of composition and morphological features has become increasingly sporadic in the histochemical literature. Since basic research on cell functional organization is essential for understanding the mechanisms responsible for major biological processes such as differentiation or growth control in normal and tumor tissues, histochemical Journals will continue to play a pivotal role in the field of cell and tissue biology in all its structural and functional aspects.
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8
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Shibata S, Sakamoto Y, Baba O, Qin C, Murakami G, Cho BH. An immunohistochemical study of matrix proteins in the craniofacial cartilage in midterm human fetuses. Eur J Histochem 2013; 57:e39. [PMID: 24441192 PMCID: PMC3896041 DOI: 10.4081/ejh.2013.e39] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 11/21/2013] [Accepted: 10/14/2013] [Indexed: 11/23/2022] Open
Abstract
Immunohistochemical localization of collagen types I, II, and X, aggrecan, versican, dentin matrix protein (DMP)-1, martix extracellular phosphoprotein (MEPE) were performed for Meckel's cartilage, cranial base cartilage, and mandibular condylar cartilage in human midterm fetuses; staining patterns within the condylar cartilage were compared to those within other cartilaginous structures. Mandibular condylar cartilage contained aggrecan; it also had more type I collagen and a thicker hypertrophic cell layer than the other two types of cartilage; these three characteristics are similar to those of the secondary cartilage of rodents. MEPE immunoreactivity was first evident in the cartilage matrix of all types of cartilage in the human fetuses and in Meckel's cartilage of mice and rats. MEPE immunoreactivity was enhanced in the deep layer of the hypertrophic cell layer and in the cartilaginous core of the bone trabeculae in the primary spongiosa. These results indicated that MEPE is a component of cartilage matrix and may be involved in cartilage mineralization. DMP-1 immunoreactivity first became evident in human bone lacunae walls and canaliculi; this pattern of expression was comparable to the pattern seen in rodents. In addition, chondroid bone was evident in the mandibular (glenoid) fossa of the temporal bone, and it had aggrecan, collagen types I and X, MEPE, and DMP-1 immunoreactivity; these findings indicated that chondroid bone in this region has phenotypic expression indicative of both hypertrophic chondrocytes and osteocytes.
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Affiliation(s)
- S Shibata
- Tokyo Medical and Dental University.
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9
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Pellicciari C. On the future contents of a small journal of histochemistry. Eur J Histochem 2012; 56:e51. [PMID: 23361247 PMCID: PMC3567770 DOI: 10.4081/ejh.2012.e51] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 12/04/2012] [Indexed: 02/07/2023] Open
Abstract
In the last three years, more than 70,000 scientific articles have been published in peer reviewed journals on the application of histochemistry in the biomedical field: most of them did not appear in strictly histochemical journals, but in others dealing with cell and molecular biology, medicine or biotechnology. This proves that histochemistry is still an active and innovative discipline with relevance in basic and applied biological research, but also demonstrates that especially the small histochemical journals should likely reconsider their scopes and strategies to preserve their authorship. A review of the last three years volumes of the European Journal of Histochemistry, taken as an example of a long-time established small journal, confirmed that the published articles were widely heterogeneous in their topics and experimental models, as in this journal's tradition. This strongly suggests that a journal of histochemistry should keep its role as a forum open to an audience as broad as possible, publishing papers on cell and tissue biology in a wide variety of models. This will improve knowledge of the basic mechanisms of development and differentiation, while helping to increase the number of potential authors since scientists who generally do not use histochemistry in their research will find hints for the applications of histochemical techniques to novel still unexplored subjects.
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Affiliation(s)
- C Pellicciari
- Dipartimento di Biologia e Biotecnologie “Lazzaro Spallanzani”,University of Pavia, Italy.
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10
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Bradaschia-Correa V, Barrence F, Ferreira L, Massa L, Arana-Chavez V. Effect of alendronate on endochondral ossification in mandibular condyles of growing rats. Eur J Histochem 2012; 56:e24. [PMID: 22688305 PMCID: PMC3428973 DOI: 10.4081/ejh.2012.e24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The replacement of the calcified cartilage by bone tissue during the endochondral ossification of the mandibular condyle is dependent of the resorbing activity of osteoclats. After partial resorption, calcified cartilage septa are covered by a primary bone matrix secreted by osteoblasts. Osteoadherin (OSAD) is a small proteoglycan present in bone matrix but absent in cartilage during the endochondral ossification. The aim of this study was to analyze the effect of alendronate, a drug known to inhibit bone resorption by osteoclasts, on the endochondral ossification of the mandibular condyle of young rats, by evaluating the distribution of osteoclasts and the presence of OSAD in the bone matrix deposited. Wistar newborn rats (n=45) received daily injections of alendronate (n=27) or sterile saline solution as control (n=18) from the day of birth until the ages of 4, 14 and 30 days. At the days mentioned, the mandibular condyles were collected and processed for transmission electron microscopy analysis. Specimens were also submitted to tartrate resistant acid phosphatase (TRAP) histochemistry and ultrastructural immunodetection of OSAD. Alendronate treatment did not impede the recruitment and fusion of osteoclasts at the ossification zone during condyle growth, but they presented inactivated phenotype. The trabeculae at the ossification area consisted of cartilage matrix covered by a layer of primary bone matrix that was immunopositive to OSAD at all time points studied. Apparently, alendronate impeded the removal of calcified cartilage and maturation of bone trabeculae in the mandibular ramus, while in controls they occurred normally. These findings highlight for giving attention to the potential side-effects of bisphosphonates administered to young patients once it may represent a risk of disturbing maxillofacial development.
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Affiliation(s)
| | - F.A.C. Barrence
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - L.B. Ferreira
- Division of Oral Biology, School of Dentistry, University of São Paulo
| | - L.F. Massa
- Division of Oral Biology, School of Dentistry, University of São Paulo
| | - V.E. Arana-Chavez
- Division of Oral Biology, School of Dentistry, University of São Paulo
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11
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Bradaschia-Correa V, Barrence FAC, Ferreira LB, Massa LF, Arana-Chavez VE. Effect of alendronate on endochondral ossification in mandibular condyles of growing rats. Eur J Histochem 2012; 56:e24. [PMID: 22688305 DOI: 10.4081/ejh.2012.24] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 02/23/2012] [Accepted: 03/13/2012] [Indexed: 11/22/2022] Open
Abstract
The replacement of the calcified cartilage by bone tissue during the endochondral ossification of the mandibular condyle is dependent of the resorbing activity of osteoclats. After partial resorption, calcified cartilage septa are covered by a primary bone matrix secreted by osteoblasts. Osteoadherin (OSAD) is a small proteoglycan present in bone matrix but absent in cartilage during the endochondral ossification. The aim of this study was to analyze the effect of alendronate, a drug known to inhibit bone resorption by osteoclasts, on the endochondral ossification of the mandibular condyle of young rats, by evaluating the distribution of osteoclasts and the presence of OSAD in the bone matrix deposited. Wistar newborn rats (n=45) received daily injections of alendronate (n=27) or sterile saline solution as control (n=18) from the day of birth until the ages of 4, 14 and 30 days. At the days mentioned, the mandibular condyles were collected and processed for transmission electron microscopy analysis. Specimens were also submitted to tartrate resistant acid phosphatase (TRAP) histochemistry and ultrastructural immunodetection of OSAD. Alendronate treatment did not impede the recruitment and fusion of osteoclasts at the ossification zone during condyle growth, but they presented inactivated phenotype. The trabeculae at the ossification area consisted of cartilage matrix covered by a layer of primary bone matrix that was immunopositive to OSAD at all time points studied. Apparently, alendronate impeded the removal of calcified cartilage and maturation of bone trabeculae in the mandibular ramus, while in controls they occurred normally. These findings highlight for giving attention to the potential side-effects of bisphosphonates administered to young patients once it may represent a risk of disturbing maxillofacial development.
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Affiliation(s)
- V Bradaschia-Correa
- Division of Oral Biology, School of Dentistry, University of São Paulo, Brazil
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12
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Shibata S, Fukuoka H, Sato R, Abe T, Suzuki Y. An in situ hybridization study of the insulin-like growth factor system in developing condylar cartilage of the fetal mouse mandible. Eur J Histochem 2012; 56:e23. [PMID: 22688304 PMCID: PMC3428972 DOI: 10.4081/ejh.2012.23] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 03/12/2012] [Accepted: 03/13/2012] [Indexed: 01/23/2023] Open
Abstract
The objective of this study was to investigate the involvement of the insulin-like growth factor (IGF) system in the developing mandibular condylar cartilage and temporomandibular joint (TMJ). Fetal mice at embryonic day (E) 13.0-18.5 were used for in situ hybridization studies using [35S]-labeled RNA probes for IGF-I, IGF-II, IGF-I receptor (-IR), and IGF binding proteins (-BPs). At E13.0, IGF-I and IGF-II mRNA were expressed in the mesenchyme around the mandibular bone, but IGF-IR mRNA was not expressed within the bone. At E14.0, IGF-I and IGF-II mRNA were expressed in the outer layer of the condylar anlage, and IGF-IR mRNA was first detected within the condylar anlage, suggesting that the presence of IGF-IR mRNA in an IGF-rich environment triggers the initial formation of the condylar cartilage. IGFBP-4 mRNA was expressed in the anlagen of the articular disc and lower joint cavity from E15.0 to 18.5. When the upper joint cavity was formed at E18.5, IGFBP-4 mRNA expression was reduced in the fibrous mesenchymal tissue facing the upper joint cavity. Enhanced IGFBP-2 mRNA expression was first recognized in the anlagen of both the articular disc and lower joint cavity at E16.0 and continued expression in these tissues as well as in the fibrous mesenchymal tissue facing the upper joint cavity was observed at E18.5. IGFBP-5 mRNA was continuously expressed in the outer layer of the perichondrium/fibrous cell layer in the developing mandibular condyle. These findings suggest that the IGF system is involved in the formation of the condylar cartilage as well as in the TMJ.
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Affiliation(s)
- S Shibata
- Maxillofacial Anatomy, Department of Maxillofacial Biology, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8549, Japan.
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13
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Shibata S, Fukuoka H, Sato R, Abe T, Suzuki Y. An in situ hybridization study of the insulin-like growth factor system in developing condylar cartilage of the fetal mouse mandible. Eur J Histochem 2012. [PMID: 22688304 PMCID: PMC3428972 DOI: 10.4081/ejh.2012.e23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to investigate the involvement of the insulin-like growth factor (IGF) system in the developing mandibular condylar cartilage and temporomandibular joint (TMJ). Fetal mice at embryonic day (E) 13.0-18.5 were used for in situ hybridization studies using [35S]-labeled RNA probes for IGF-I, IGF-II, IGF-I receptor (-IR), and IGF binding proteins (-BPs). At E13.0, IGF-I and IGF-II mRNA were expressed in the mesenchyme around the mandibular bone, but IGF-IR mRNA was not expressed within the bone. At E14.0, IGF-I and IGF-II mRNA were expressed in the outer layer of the condylar anlage, and IGF-IR mRNA was first detected within the condylar anlage, suggesting that the presence of IGF-IR mRNA in an IGF-rich environment triggers the initial formation of the condylar cartilage. IGFBP-4 mRNA was expressed in the anlagen of the articular disc and lower joint cavity from E15.0 to 18.5. When the upper joint cavity was formed at E18.5, IGFBP-4 mRNA expression was reduced in the fibrous mesenchymal tissue facing the upper joint cavity. Enhanced IGFBP-2 mRNA expression was first recognized in the anlagen of both the articular disc and lower joint cavity at E16.0 and continued expression in these tissues as well as in the fibrous mesenchymal tissue facing the upper joint cavity was observed at E18.5. IGFBP-5 mRNA was continuously expressed in the outer layer of the perichondrium/fibrous cell layer in the developing mandibular condyle. These findings suggest that the IGF system is involved in the formation of the condylar cartilage as well as in the TMJ.
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Affiliation(s)
- S. Shibata
- Maxillofacial Anatomy, Department of Maxillofacial Biology, Graduate School, Tokyo Medical and Dental University
| | - H. Fukuoka
- Maxillofacial Orthognathics, Department of Maxillofacial Reconstruction and Function, Graduate School, Tokyo Medical and Dental University
| | - R. Sato
- Department of Orthodontics, Nihon University School of Dentistry at Matsudo, Chiba
| | - T. Abe
- Maxillofacial Anatomy, Department of Maxillofacial Biology, Graduate School, Tokyo Medical and Dental University
| | - Y. Suzuki
- Division of Histology, Department of Oral Growth and Development, Health Sciences University of Hokkaido, Japan
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14
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Kiga N. Histochemistry for studying structure and function of the articular disc of the human temporomandibular joint. Eur J Histochem 2012; 56:e11. [PMID: 22472889 PMCID: PMC3352130 DOI: 10.4081/ejh.2012.e11] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 12/21/2011] [Indexed: 11/23/2022] Open
Abstract
The articular disc of the temporomandibular joint (TMJ) is composed of fibrocartilage, and the extracellular matrix of this disc is composed mainly of collagen, glycosaminoglycan and proteoglycans. Research on the changes that occur in the composition of the articular disc of the TMJ is necessary for understanding the basis of the pathological process of internal derangement (ID), and a number of reports have been published in recent years on the application of refined histochemical techniques to investigate the structure and function of the TMJ. The direction of future TMJ disc studies should be towards obtaining more evidence to support previous results, and should hopefully be of practical use in terms of prevention and cure of ID.
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Affiliation(s)
- N Kiga
- Oral and Maxillofacial Surgery, Minami Wakayama Medical Center, 27-1, Takinai-Cho, Tanabe-City, Wakayama 646-8558, Japan.
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Pellicciari C, Malatesta M. Identifying pathological biomarkers: histochemistry still ranks high in the omics era. Eur J Histochem 2011; 55:e42. [PMID: 22297448 PMCID: PMC3284244 DOI: 10.4081/ejh.2011.e42] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 12/06/2011] [Indexed: 12/28/2022] Open
Abstract
In recent years, omic analyses have been proposed as possible approaches to diagnosis, in particular for tumours, as they should be able to provide quantitative tools to detect and measure abnormalities in gene and protein expression, through the evaluation of transcription and translation products in the abnormal vs normal tissues. Unfortunately, this approach proved to be much less powerful than expected, due to both intrinsic technical limits and the nature itself of the pathological tissues to be investigated, the heterogeneity deriving from polyclonality and tissue phenotype variability between patients being a major limiting factor in the search for unique omic biomarkers. Especially in the last few years, the application of refined techniques for investigating gene expression in situ has greatly increased the diagnostic/prognostic potential of histochemistry, while the progress in light microscopy technology and in the methods for imaging molecules in vivo have provided valuable tools for elucidating the molecular events and the basic mechanisms leading to a pathological condition. Histochemical techniques thus remain irreplaceable in pathologist's armamentarium, and it may be expected that even in the future histochemistry will keep a leading position among the methodological approaches for clinical pathology.
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Affiliation(s)
- C Pellicciari
- Department of Biology and Biotechnology, University of Pavia, Italy.
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