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Almangush A, Coletta RD, Mäkitie AA, Salo T, Leivo I. NOVEL ADVANCES IN STAGING AND GRADING OF EARLY ORAL TONGUE CANCER: A MULTICENTER STUDY. Oral Surg Oral Med Oral Pathol Oral Radiol 2021. [DOI: 10.1016/j.oooo.2021.03.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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2
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Martins L, Dos Santos EL, de Almeida AB, Machado RA, Lyrio AM, Foster BL, Kantovitz KR, Coletta RD, Nociti FH. A novel de novo heterozygous ALPL nonsense mutation associated with adult hypophosphatasia. Osteoporos Int 2020; 31:2251-2257. [PMID: 32572521 PMCID: PMC8214176 DOI: 10.1007/s00198-020-05490-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/03/2020] [Indexed: 12/20/2022]
Abstract
UNLABELLED Using genetic, clinical, biochemical, and radiographic assessment and bioinformatic approaches, we present an unusual case of adult HPP caused by a novel de novo heterozygous nonsense mutation in the alkaline phosphatase (ALPL). INTRODUCTION Hypophosphatasia (HPP) is caused by genetic alterations of the ALPL gene, encoding the tissue-nonspecific isozyme of alkaline phosphatase (TNSALP). Here, the purpose was to perform clinical and molecular investigation in a 36-year-old Caucasian woman suspected to present adult HPP. METHODS Medical and dental histories were obtained for the proposita and family members, including biochemical, radiographic, and dental assessments. ALPL mutational analysis was performed by the Sanger sequencing method, and the functional impact prediction of the identified mutations was assessed by bioinformatic methods. RESULTS We identified a novel heterozygous nonsense mutation in the ALPL gene (NM_000478.6:c.768G>A; W[TGG]>*[TGA]) associated with spontaneous vertebral fracture, severe back pain, musculoskeletal pain, low bone density, and short-rooted permanent teeth loss. Functional prediction analysis revealed that the Trp256Ter mutation led to a complete loss of TNSALP crown domain and extensive loss of other functional domains (calcium-binding domain, active site vicinity, and zinc-binding site) and over 60% loss of homodimer interface residues, suggesting that the mutant TNSALP molecules are nonfunctional and form unstable homodimers. Genotyping of the ALPL in the proposita's parents, sister, and niece revealed that in this case, HPP occurred due to a de novo mutation. CONCLUSION The present study describes a novel genotype-phenotype and structure-function relationship for HPP, contributing to a better molecular comprehension of HPP etiology and pathophysiology.
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Affiliation(s)
- L Martins
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, State University of Campinas - UNICAMP, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil
| | - E L Dos Santos
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, State University of Campinas - UNICAMP, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - A B de Almeida
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, State University of Campinas - UNICAMP, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil
| | - R A Machado
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas - UNICAMP, Piracicaba, SP, Brazil
- Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo (HRAC/USP), Bauru, SP, Brazil
| | - A M Lyrio
- Pontifical Catholic University of Campinas, Campinas, SP, Brazil
| | - B L Foster
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - K R Kantovitz
- Department of Dental Materials, São Leopoldo Research Center, Campinas, SP, Brazil
| | - R D Coletta
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas - UNICAMP, Piracicaba, SP, Brazil
| | - F H Nociti
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, State University of Campinas - UNICAMP, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
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Coletta RD, Salo T. Myofibroblasts in oral potentially malignant disorders: Is it related to malignant transformation? Oral Dis 2018; 24:84-88. [PMID: 29480603 DOI: 10.1111/odi.12694] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 05/19/2017] [Indexed: 12/30/2022]
Abstract
In oral cancer, acquisition of α-smooth muscle actin (α-SMA)-positive fibroblasts, known as myofibroblasts or carcinoma-associated fibroblasts (CAF), is an important event for progression and metastasis. However, the contribution of myofibroblasts in oral potentially malignant disorders (OPMD) remains controversial. This systematic review provides evidence that immunodetection of myofibroblasts may identify oral submucous fibrosis (OSMF) with high risk of malignant transformation, but does not represent an auxiliary tool to predict the malignant potential of leukoplakia and erythroplakia, the most common OPMD.
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Affiliation(s)
- R D Coletta
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - T Salo
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.,Unit of Cancer Research and Translational Medicine, Faculty of Medicine and Medical Research Center Oulu, Oulu University Hospital, University of Oulu, Oulu, Finland.,Department of Pathology, Institute of Oral and Maxillofacial Disease, Helsinki University Hospital, University of Helsinki and HUSLAB, Helsinki, Finland
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González-Arriagada WA, Olivero P, Rodríguez B, Lozano-Burgos C, de Oliveira CE, Coletta RD. Clinicopathological significance of miR-26, miR-107, miR-125b, and miR-203 in head and neck carcinomas. Oral Dis 2018; 24:930-939. [PMID: 29667275 DOI: 10.1111/odi.12872] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/27/2018] [Accepted: 04/10/2018] [Indexed: 12/19/2022]
Abstract
OBJECTIVES MicroRNAs play a role in the development and progression of head and neck squamous cell carcinomas (HNSCC). Our aim was to study the expression of miR-26, miR-107, miR-125b, and miR-203 in primary HNSCC with and without lymph node metastasis and their clinicopathological significance. MATERIALS AND METHODS The expression of microRNAs in primary HNSCC with lymph node metastasis (n = 16) and their matched lymph node, as well as primary tumors without metastasis (n = 16), were determined by quantitative RT-PCR and analyzed with clinicopathological features and survival. RESULTS The expression levels of miR-26 (p < .05) and miR-125b (p < .01) were higher in metastatic primary HNSCC, while levels of miR-203 (p < .01) were lower. The expression of the microRNAs was associated with clinicopathological features, including miR-26 high expression and N stage (p = .04), poor differentiation (p = .005) and recurrence (p = .007), miR-125b high expression and N stage (p = .0005) and death (p = .02), and low levels of miR-203 and N stage (p = .04). The high expression of miR-26 was associated with shortened disease-free survival, and high miR-125b expression was an independent risk factor for poor disease-specific survival. CONCLUSIONS These findings suggest that miR-26 and miR-125b may be associated with the progression and metastasis of HNSCC and that miR-203 is associated with a more favorable prognosis.
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Affiliation(s)
- W A González-Arriagada
- Facultad de Odontología, Patología y Diagnóstico Oral, Universidad de Valparaíso, Valparaíso, Chile
| | - P Olivero
- Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile
| | - B Rodríguez
- Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile
| | - C Lozano-Burgos
- Servicio de Anatomía Patológica, Hospital Carlos Van Buren, Valparaíso, Chile
| | - C E de Oliveira
- Department Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil.,Oral Pathology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - R D Coletta
- Oral Pathology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
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de Andrade A, de Oliveira CE, Dourado MR, Macedo C, Winck FV, Paes Leme AF, Salo T, Coletta RD, de Almeida Freitas R, Galvão HC. Extracellular vesicles from oral squamous carcinoma cells display pro- and anti-angiogenic properties. Oral Dis 2018; 24:725-731. [PMID: 28887832 DOI: 10.1111/odi.12765] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 07/21/2017] [Accepted: 09/01/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND A new intercellular communication mode established by neoplastic cells and tumor microenvironment components is based on extracellular vesicles (EVs). However, the biological effects of the EVs released by tumor cells on angiogenesis are not completely understood. Here, we aimed to understand the biological effects of EVs isolated from two cell lines of oral squamous cell carcinoma (OSCC) (SCC15 and HSC3) on endothelial cell tubulogenesis. METHODS OSCC-derived EVs were isolated with a polymer-based precipitation method, quantified using nanoparticle tracking analysis and verified for EV markers by dot blot. Functional assays were performed to assess the angiogenic potential of the OSCC-derived EVs. RESULTS The results showed that EVs derived from both cell lines displayed typical spherical-shaped morphology and expressed the EV markers CD63 and Annexin II. Although the average particle concentration and size were quite similar, SCC15-derived EVs promoted a pronounced tubular formation associated with significant migration and apoptosis rates of the endothelial cells, whereas EVs derived from HSC3 cells inhibited significantly endothelial cell tubulogenesis and proliferation. CONCLUSION The findings of this study reveal that EVs derived from different OSCC cell lines by a polymer-based precipitation method promote pro- or anti-angiogenic effects.
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Affiliation(s)
- Aldl de Andrade
- Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil.,Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
| | - C E de Oliveira
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
| | - M R Dourado
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
| | - Ccs Macedo
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
| | - F V Winck
- Mass Spectrometry Laboratory, Biosciences National Laboratory, LNBio, CNPEM, Campinas, Brazil
| | - A F Paes Leme
- Mass Spectrometry Laboratory, Biosciences National Laboratory, LNBio, CNPEM, Campinas, Brazil
| | - T Salo
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil.,Unit of Cancer Research and Translational Medicine, Faculty of Medicine, Medical Research Center Oulu, Oulu University Hospital, University of Oulu, Oulu, Finland.,Department of Pathology, Institute of Oral and Maxillofacial Disease, HUSLAB, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - R D Coletta
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
| | - R de Almeida Freitas
- Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil
| | - H C Galvão
- Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil
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Machado RA, Pontes H, Pires FR, Silveira HM, Bufalino A, Carlos R, Tuji FM, Alves D, Santos-Silva AR, Lopes MA, Capistrano HM, Coletta RD, Fonseca FP. Clinical and genetic analysis of patients with cherubism. Oral Dis 2017. [PMID: 28644570 DOI: 10.1111/odi.12705] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To describe the clinical and genetic features of patients with cherubism. MATERIAL AND METHODS A descriptive analysis of 14 cases from nine different families was carried out. Clinicopathological, imaging, and follow-up data were retrieved from patients' medical files and correlated with the genetic profile of each patient. Genomic DNA isolated from buccal mucosa cells was subjected to direct sequencing analysis of the SH3BP2 gene. RESULTS Females were more affected than males (8:6), and the mean age at diagnosis was 8.6 years (range 3-30 years). Eleven patients exhibited simultaneous bilateral involvement of the maxilla and mandible. Two patients did not have a familial history of cherubism. Progressive growth pattern was found in six patients and stable lesions were observed in other seven patients, whereas in one patient, complete spontaneous remission was documented during the follow-up (31 years). Mutations were found in 13 cases and included the typical heterozygous missense mutations R415Q, P418T, and P418H at exon 9 of SH3BP2. No correlation between the mutations and the clinical manifestations was observed. CONCLUSION Three different point mutations in the SH3BP2 gene were detected with variable clinical involvement. Genotype-phenotype association studies in larger population with cherubism are necessary to provide important knowledge about molecular mechanisms related to the disease.
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Affiliation(s)
- R A Machado
- Department of Oral Diagnosis (Pathology and Semiology), Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Har Pontes
- Service of Oral Pathology, João de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - F R Pires
- Oral Pathology, School of Dentistry, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - H M Silveira
- Oral and Maxillofacial Surgery, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A Bufalino
- Department of Diagnosis and Surgery, Araraquara Dental School, Universidade Estadual Paulista, Araraquara, Brazil
| | - R Carlos
- Centro Clinico de Cabeza y Cuello, Guatemala City, Guatemala
| | - F M Tuji
- School of Dentistry, Federal University of Pará, Belém, Brazil
| | - Dbm Alves
- Instituto Esperança de Ensino Superior, Santarém, Brazil
| | - A R Santos-Silva
- Department of Oral Diagnosis (Pathology and Semiology), Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - M A Lopes
- Department of Oral Diagnosis (Pathology and Semiology), Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - H M Capistrano
- Department of Oral Pathology, School of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil
| | - R D Coletta
- Department of Oral Diagnosis (Pathology and Semiology), Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - F P Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Hinsley EE, de Oliveira CE, Hunt S, Coletta RD, Lambert DW. Angiotensin 1-7 inhibits angiotensin II-stimulated head and neck cancer progression. Eur J Oral Sci 2017; 125:247-257. [PMID: 28653423 DOI: 10.1111/eos.12356] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- E. E. Hinsley
- Academic Unit of Oral and Maxillofacial Pathology; School of Clinical Dentistry; University of Sheffield; Sheffield UK
| | - C. E. de Oliveira
- Department of Oral Diagnosis; School of Dentistry; University of Campinas; Piracicaba Brazil
| | - S. Hunt
- Academic Unit of Oral and Maxillofacial Pathology; School of Clinical Dentistry; University of Sheffield; Sheffield UK
| | - R. D. Coletta
- Department of Oral Diagnosis; School of Dentistry; University of Campinas; Piracicaba Brazil
| | - D. W. Lambert
- Academic Unit of Oral and Maxillofacial Pathology; School of Clinical Dentistry; University of Sheffield; Sheffield UK
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8
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Martins L, Machado RA, Araujo DS, Giovani PA, Rebouças PD, Rodrigues LP, Mofatto LS, Ribeiro MM, Coutinho LL, Puppin-Rontani RM, Coletta RD, Nociti FH, Kantovitz KR. EDA mutation by exome sequencing in non-syndromic X-linked oligodontia. Clin Genet 2017; 92:227-229. [PMID: 28052341 DOI: 10.1111/cge.12961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/23/2016] [Accepted: 12/30/2016] [Indexed: 11/28/2022]
Affiliation(s)
- L Martins
- Department of Prosthodontics and Periodontics, Division of Periodontics, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - R A Machado
- Department of Oral Diagnosis, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - D S Araujo
- Department of Pediatric Dentistry, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - P A Giovani
- Department of Pediatric Dentistry, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - P D Rebouças
- Department of Pediatric Dentistry, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - L P Rodrigues
- Department of Pediatric Dentistry, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - L S Mofatto
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - M M Ribeiro
- Department of Morphology, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - L L Coutinho
- Department of Animal Science, University of São Paulo/ESALQ, Piracicaba, Brazil
| | - R M Puppin-Rontani
- Department of Pediatric Dentistry, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - R D Coletta
- Department of Oral Diagnosis, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - F H Nociti
- Department of Prosthodontics and Periodontics, Division of Periodontics, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - K R Kantovitz
- Department of Pediatric Dentistry, University of Campinas - UNICAMP, Piracicaba, Brazil.,Department of Dental Materials, São Leopoldo Mandic School of Dentistry and Research Center, Campinas, Brazil
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Ferreira SBP, Viana MM, Maia NGF, Leão LL, Machado RA, Coletta RD, de Aguiar MJB, Martelli-Junior H. Oral findings in Williams-Beuren syndrome. Med Oral Patol Oral Cir Bucal 2017; 23:e1-e6. [PMID: 29274148 PMCID: PMC5822531 DOI: 10.4317/medoral.21834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 10/01/2017] [Indexed: 11/05/2022] Open
Abstract
Background Material and Methods Results Conclusions
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10
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Affiliation(s)
- RD Coletta
- Department of Oral Diagnosis; School of Dentistry; University of Campinas; Piracicaba SP Brazil
| | - AFP Leme
- Mass Spectrometry Laboratory; Brazilian Biosciences National Laboratory-CNPEM; Campinas SP Brazil
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11
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Sawazaki-Calone I, Rangel A, Bueno AG, Morais CF, Nagai HM, Kunz RP, Souza RL, Rutkauskis L, Salo T, Almangush A, Coletta RD. The prognostic value of histopathological grading systems in oral squamous cell carcinomas. Oral Dis 2015; 21:755-61. [PMID: 25825335 DOI: 10.1111/odi.12343] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/17/2015] [Accepted: 03/20/2015] [Indexed: 01/12/2023]
Abstract
OBJECTIVE This study evaluated the association of four histopathological grading systems (WHO grading system, malignancy grading of the deep invasive margins (MG), histological risk (HR) model, and tumor budding and depth of invasion (BD) model) with clinicopathological parameters and outcome of 113 oral squamous cell carcinomas to identify their roles in prognosis. METHODS Demographic and clinical features were obtained from patients' records. Sections from all paraffin-embedded blocks were evaluated according to the four grading systems. Demographic and clinical associations were analyzed using chi-square test, and correlations between the grading systems were established with the Spearman's rank correlation test. Survival curves were performed with Kaplan-Meier method, and multivariate analysis based on Cox proportional hazard model was calculated. RESULTS Significant associations with survival were observed for WHO grading system and BD model in the univariate analysis, but only the BD model was significantly associated with disease outcome as an independent prognostic marker. Age, tumor size, and presence of regional metastasis were also independent markers of reduced survival. CONCLUSION A significant association between the BD model and outcome of OSCC patients was observed, indicating this new histopathological grading system as a possible prognostic tool.
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Affiliation(s)
- I Sawazaki-Calone
- Oral Pathology and Oral Medicine, Dentistry School, Western Paraná State University, Cascavel, Brazil.,Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Alca Rangel
- Oral Pathology and Oral Medicine, Dentistry School, Western Paraná State University, Cascavel, Brazil
| | - A G Bueno
- ANATOM Anatomic Pathology Laboratory, Cascavel, Brazil
| | - C F Morais
- APC Anatomic Pathology Laboratory, Cascavel, Brazil
| | - H M Nagai
- UOPECCAN Cancer Hospital, Cascavel, Brazil
| | - R P Kunz
- Oncology Center of Cascavel (CEONC), Cascavel, Brazil
| | - R L Souza
- Oral Pathology and Oral Medicine, Dentistry School, Western Paraná State University, Cascavel, Brazil
| | - L Rutkauskis
- Oral Pathology and Oral Medicine, Dentistry School, Western Paraná State University, Cascavel, Brazil
| | - T Salo
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.,Department of Diagnostics and Oral Medicine, Institute of Dentistry and Oulu University Hospital, University of Oulu, Oulu, Finland.,Institute of Dentistry, University of Helsinki, Helsinki, Finland
| | - A Almangush
- Department of Diagnostics and Oral Medicine, Institute of Dentistry and Oulu University Hospital, University of Oulu, Oulu, Finland.,Institute of Dentistry, University of Helsinki, Helsinki, Finland
| | - R D Coletta
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
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12
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Rodrigues PC, Miguel MCC, Bagordakis E, Fonseca FP, de Aquino SN, Santos-Silva AR, Lopes MA, Graner E, Salo T, Kowalski LP, Coletta RD. Clinicopathological prognostic factors of oral tongue squamous cell carcinoma: a retrospective study of 202 cases. Int J Oral Maxillofac Surg 2014; 43:795-801. [PMID: 24583139 DOI: 10.1016/j.ijom.2014.01.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 12/05/2013] [Accepted: 01/29/2014] [Indexed: 01/08/2023]
Abstract
Although several histopathological parameters and grading systems have been described as predictive of the treatment response and outcome of oral squamous cell carcinoma (OSCC), none is universally accepted. A new scoring system, the histological risk model, was recently described to be a powerful predictive tool for recurrence and overall survival in OSCC. The aim of this study was to verify the predictive role of the histological risk model in a cohort of 202 patients at all stages of oral/mobile tongue squamous cell carcinoma (OTSCC). Demographic and clinical data were collected from the medical records and the tumours were evaluated using the histological risk model. Statistical analyses were performed using the χ(2) test, the Kaplan-Meier method, and the Cox regression model. The histological risk model showed no statistical correlation with demographic or clinical parameters and did not Predict the outcome of the OTSCC patients. However, multivariate regression analysis revealed a significant correlation of the clinical disease stage with the disease outcome. Despite major efforts to identify new predictive parameters and histological systems, clinical features are still the most reliable prognostic factors for patients with OTSCC.
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Affiliation(s)
- P C Rodrigues
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - M C C Miguel
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil; Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - E Bagordakis
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - F P Fonseca
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - S N de Aquino
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - A R Santos-Silva
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - M A Lopes
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - E Graner
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - T Salo
- Department of Diagnostics and Oral Medicine, Institute of Dentistry and Oulu University Hospital and Medical Research Center, University of Oulu, Oulu, Finland; Institute of Dentistry, University of Helsinki, Helsinki, Finland
| | - L P Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - R D Coletta
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil.
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13
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Seguin F, Carvalho MA, Bastos DC, Agostini M, Zecchin KG, Alvarez-Flores MP, Chudzinski-Tavassi AM, Coletta RD, Graner E. The fatty acid synthase inhibitor orlistat reduces experimental metastases and angiogenesis in B16-F10 melanomas. Br J Cancer 2012; 107:977-87. [PMID: 22892389 PMCID: PMC3464771 DOI: 10.1038/bjc.2012.355] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 07/12/2012] [Accepted: 07/17/2012] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Fatty acid synthase (FASN) is overexpressed and associated with poor prognosis in several human cancers. Here, we investigate the effect of FASN inhibitors on the metastatic spread and angiogenesis in experimental melanomas and cultured melanoma cells. METHODS The lung colonisation assay and cutaneous melanomas were performed by the inoculation of mouse melanoma B16-F10 cells in C57BL6 mice. Blood vessel endothelial cells (RAEC and HUVEC) were applied to determine cell proliferation, apoptosis, and the formation of capillary-like structures. Vascular endothelial growth factor A (VEGFA) expression was evaluated by quantitative RT-PCR and ELISA in B16-F10, human melanoma (SK-MEL-25), and human oral squamous carcinoma (SCC-9) cells. Conditioned media from these cancer cell lines were used to study the effects of FASN inhibitors on endothelial cells. RESULTS B16-F10 melanoma-induced metastases and angiogenesis were significantly reduced in orlistat-treated mice. Fatty acid synthase inhibitors reduced the viability, proliferation, and the formation of capillary-like structures by RAEC cells, as well as the tumour cell-mediated formation of HUVEC capillary-like structures. Cerulenin and orlistat stimulated the production of total VEGFA in B16-F10, SK-MEL-25, and SCC-9 cells. Both drugs also enhanced VEGFA(121), (165), (189,) and (165b) in SK-MEL-25 and SCC-9 cells. CONCLUSION FASN inhibitors reduce metastasis and tumour-induced angiogenesis in experimental melanomas, and differentially modulate VEGFA expression in B16-F10 cells.
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Affiliation(s)
- F Seguin
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
| | - M A Carvalho
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
| | - D C Bastos
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
| | - M Agostini
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
| | - K G Zecchin
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
| | - M P Alvarez-Flores
- Laboratory of Biochemistry and Biophysics, Butantan Institute, Avenida Vital Brasil 1500, Butantã, São Paulo, CEP 05503-900, SP, Brazil
| | - A M Chudzinski-Tavassi
- Laboratory of Biochemistry and Biophysics, Butantan Institute, Avenida Vital Brasil 1500, Butantã, São Paulo, CEP 05503-900, SP, Brazil
| | - R D Coletta
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
| | - E Graner
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas (UNICAMP), Avenida Limeira 901, CP 52, Areão, Piracicaba, CEP 13414-018, SP, Brazil
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Bufalino A, Paranaíba LMR, Gouvêa AF, Gueiros LA, Martelli-Júnior H, Junior JJ, Lopes MA, Graner E, De Almeida OP, Vargas PA, Coletta RD. Cleidocranial dysplasia: oral features and genetic analysis of 11 patients. Oral Dis 2011; 18:184-90. [PMID: 22023169 DOI: 10.1111/j.1601-0825.2011.01862.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Cleidocranial dysplasia (CCD) is a dominantly inherited autosomal disease characterized by typical bone defects including short stature, persistently open or delayed closure of the cranial sutures, and hypoplastic or aplastic clavicles. Oral features are frequent and include supernumerary teeth, delayed eruption or impaction of the permanent teeth, and malocclusion. Heterozygous mutations in RUNX2 gene, which encodes a transcription factor essential for osteoblast differentiation, were identified as the etiological cause of CCD. OBJECTIVE AND METHODS Herein, we performed physical and radiographic examination and screening for RUNX2 mutations in 11 patients from five families with CCD. RESULTS All patients demonstrated the classical phenotypes related to CCD. Families whose affected members had several dental alterations such as multiple impacted and supernumerary teeth demonstrated heterozygous missense mutations (R190Q and R225Q) that impair the runt domain of RUNX2. On the other hand, CCD patients from families with low frequency of dental abnormalities showed no mutation in RUNX2 or mutation outside of the runt domain (Q292fs→X299). CONCLUSION The current findings suggest a correlation between dental alterations and mutations in the runt domain of RUNX2 in CCD patients. Further clinical and genetic studies are needed to clarify the relationship between phenotypes and genotypes in CCD and to identify other factors that might influence the clinical features of this uncommon disease.
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Affiliation(s)
- A Bufalino
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, São Paulo, Brazil
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15
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Sobral LM, Aseredo F, Agostini M, Bufalino A, Pereira MCC, Graner E, Coletta RD. Molecular events associated with ciclosporin A-induced gingival overgrowth are attenuated by Smad7 overexpression in fibroblasts. J Periodontal Res 2011; 47:149-58. [DOI: 10.1111/j.1600-0765.2011.01412.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Gonçalves RB, Coletta RD, Silvério KG, Benevides L, Casati MZ, da Silva JS, Nociti FH. Impact of smoking on inflammation: overview of molecular mechanisms. Inflamm Res 2011. [PMID: 21298317 DOI: 10.1007/s00011-011-03087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND Inflammation is a critical component of normal tissue repair, as well as being fundamental to the body's defense against infection. Environmental factors, such as smoking, have been reported to modify the host response and hence modify inflammation progression, severity and outcome. Therefore, a comprehensive understanding of the molecular mechanisms by which smoking affects inflammation is vital for preventive and therapeutic strategies on a clinical level. AIM The purpose of the present article is to review the potential biological mechanisms by which smoking affects inflammation, emphasizing recent developments. RESULTS Smoking is reported to effect a number of biological mediators of inflammation through its effect on immune-inflammatory cells, leading to an immunosuppressant state. Recent evidence strongly suggests that the molecular mechanisms behind the modulation of inflammation by smoking mainly involve the nuclear factor-kappa B (NF-kB) family, through the activation of both an inhibitor of IkB kinase (IKK)-dependent and -independent pathway. In addition to NF-kB activation, a number of transcriptional factors including GATA, PAX5 and Smad 3/4, have also been implicated. CONCLUSION Multiple mechanisms may be responsible for the association of smoking and inflammation, and the identification of potential therapeutic targets should guide future research.
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Affiliation(s)
- R B Gonçalves
- Department of Periodontology and Research Group in Oral Ecology, Faculty of Dentistry, Laval University, Quebec City, Canada
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17
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dos Santos Neto PE, dos Santos LAN, Coletta RD, Laranjeira AL, de Oliveira Santos CC, Bonan PR, Martelli-Júnior H. Imaging evalution of the gingival fibromatosis and dental abnormalities syndrome. Dentomaxillofac Radiol 2011; 40:236-43. [PMID: 21493880 PMCID: PMC3520309 DOI: 10.1259/dmfr/20901517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Accepted: 03/23/2010] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The purpose of this study was to evaluate the dentomaxillofacial imaging features of one family affected by the gingival fibromatosis (GF) and dental abnormalities (DA) syndrome. METHODS Conventional radiographs (periapical and panoramic) and cone beam CT (CBCT) were performed in nine members of this family: four were affected by the syndrome and five were not. RESULTS The four affected members demonstrated mild generalized GF in association with DA, including hypoplastic amelogenesis imperfecta, intrapulpal calcifications, delay on tooth eruption and pericoronal radiolucencies in unerupted teeth. None of these oral changes were identified in the five unaffected members. All nine members presented alterations in the paranasal sinuses and mucosal thickening of the maxillary sinus was the most common finding. CONCLUSION Family members not affected by the syndrome showed similar alterations in the paranasal sinuses and CBCT was useful to characterize the dentomaxillofacial features of this new syndrome associating GF and DA.
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Affiliation(s)
- PE dos Santos Neto
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
| | - LAN dos Santos
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
- Postgraduate in Radiology, Faculty of Dentistry Piracicaba, State University of Campinas—UNICAMP, Piracicaba—SP, Brazil
| | - RD Coletta
- Department of Oral Diagnosis, School of Dentistry, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - AL Laranjeira
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
| | - CC de Oliveira Santos
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
| | - PR Bonan
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
| | - H Martelli-Júnior
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
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18
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Gonçalves RB, Coletta RD, Silvério KG, Benevides L, Casati MZ, da Silva JS, Nociti FH. Impact of smoking on inflammation: overview of molecular mechanisms. Inflamm Res 2011; 60:409-24. [PMID: 21298317 DOI: 10.1007/s00011-011-0308-7] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 11/25/2010] [Accepted: 01/03/2011] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Inflammation is a critical component of normal tissue repair, as well as being fundamental to the body's defense against infection. Environmental factors, such as smoking, have been reported to modify the host response and hence modify inflammation progression, severity and outcome. Therefore, a comprehensive understanding of the molecular mechanisms by which smoking affects inflammation is vital for preventive and therapeutic strategies on a clinical level. AIM The purpose of the present article is to review the potential biological mechanisms by which smoking affects inflammation, emphasizing recent developments. RESULTS Smoking is reported to effect a number of biological mediators of inflammation through its effect on immune-inflammatory cells, leading to an immunosuppressant state. Recent evidence strongly suggests that the molecular mechanisms behind the modulation of inflammation by smoking mainly involve the nuclear factor-kappa B (NF-kB) family, through the activation of both an inhibitor of IkB kinase (IKK)-dependent and -independent pathway. In addition to NF-kB activation, a number of transcriptional factors including GATA, PAX5 and Smad 3/4, have also been implicated. CONCLUSION Multiple mechanisms may be responsible for the association of smoking and inflammation, and the identification of potential therapeutic targets should guide future research.
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Affiliation(s)
- R B Gonçalves
- Department of Periodontology and Research Group in Oral Ecology, Faculty of Dentistry, Laval University, Quebec City, Canada
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19
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Martelli H, Santos SMC, Guimarães ALS, Paranaíba LMR, Laranjeira AL, Coletta RD, Bonan PRF. Idiopathic gingival fibromatosis: description of two cases. Minerva Stomatol 2010; 59:143-148. [PMID: 20357741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Gingival fibromatosis is an enlargement localized or generalized of the gingival tissue characterized by an expansion and accumulation of the connective tissue, predominantly type I collagen, with occasional presence of increased number of cells, supposed fibroblastic proliferation. Gingival fibromatosis can be induced as a side effect of systemic drugs, such as phenytoin, cyclosporin, and nifedipine, or due to hereditary factors. However, in some cases, the gingival overgrowth is idiopathic. This paper reports two cases of idiopathic gingival fibromatosis and discusses the diagnosis, histopathological features, treatment and immunohistochemical evaluation of myofibroblasts of this condition. The tissues removed were fixed in formalin, and sections used for hematoxylin and eosin and Masson tricromic stain. To determine the presence of myofibroblasts, we performed immunohistochemistry against a-SMA protein. Histological examination revealed epithelial hyperplasia with long rete pegs and increase in the dense fibrous connective tissue. The Masson tricromic stain revealed wide bundles of collagen strongly stained. It was showed negative labeling to a-SMA. These results strongly suggest that myofibroblasts are not involved in gingival overgrowth in the cases of IGF reported. Future studies will be necessary to determine the pathogenesis of idiopathic gingival fibromatosis.
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Affiliation(s)
- H Martelli
- Stomatology Clinic, Dental School, State University of Monte Claros, Monte Claros, Minas Geiras, Brazil
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20
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Paranaíba LMR, Bufalino A, Martelli-Júnior H, de Barros LM, Graner E, Coletta RD. Lack of association betweenIRF6polymorphisms (rs2235371 and rs642961) and non-syndromic cleft lip and/or palate in a Brazilian population. Oral Dis 2010; 16:193-7. [DOI: 10.1111/j.1601-0825.2009.01627.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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21
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Abstract
BACKGROUND Members of the Six family of homeoproteins are expressed in numerous tissues during vertebrate embryogenesis, and are critical regulators of both cell proliferation and survival. Here we report the temporal and spatial expression of Six1 during maturation of the mouse submandibular salivary gland (SSG) from embryonic day 18.5 (E18.5) to postnatal day 28. Additionally, we examine the role of Six1 during SSG development using Six1-deficient mice. METHODS Six1 expression was assessed by reverse transcription-polymerase chain reaction, Western blot, and immunofluorescence. Proliferation was measured by bromodeoxyuridine (BrdU) incorporation index, and apoptosis was evaluated by TUNEL assay. RESULTS Six1 mRNA and protein levels are high in the epithelial SSG cells at E18.5 and decrease progressively in the postnatal maturing SSG. Although SSGs from Six1(-/-) embryos are significantly smaller than wild type SSGs, the histological structures of the SSG acini and ducts are similar. Six1(-/-) salivary epithelial cells exhibit an intrinsic defect in cell proliferation accompanied by a significant reduction in the Six1 target gene cyclin A1, previously shown to be a critical mediator of Six1-induced proliferation. CONCLUSION Our results suggest that the reduction in size of Six1(-/-) SSGs is result of a decrease in cell proliferation during development/maturation.
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Affiliation(s)
- E L McCoy
- Program in Molecular Biology, University of Colorado School of Medicine, Denver, CO, USA
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22
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Silva ARS, Vargas PA, Ribeiro ACP, Martinez-Mata G, Coletta RD, Lopes MA. Fine needle aspiration cytology in the diagnosis of cervical tuberculosis and paracoccidioidomycosis. Cytopathology 2009; 21:66-8. [DOI: 10.1111/j.1365-2303.2009.00644.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Kellermann MG, Sobral LM, da Silva SD, Zecchin KG, Graner E, Lopes MA, Nishimoto I, Kowalski LP, Coletta RD. Myofibroblasts in the stroma of oral squamous cell carcinoma are associated with poor prognosis. Histopathology 2008; 51:849-53. [PMID: 18042073 DOI: 10.1111/j.1365-2559.2007.02873.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Ferreti Bonan PR, Nogueira Dos Santos LA, Batista De-Paula AM, Coletta RD, Martelli Jùnior H. Chondrosarcoma involving the periodontum: clinicopathological and immunohistochemical features of a case study. Minerva Stomatol 2006; 55:587-91. [PMID: 17268393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Chondrosarcoma is a rare flat bone neoplasm. Herein, we present the clinicopathological and immunohistochemical findings of a case affecting the periodontum. A 16-year-old girl presented a painless reddish mass in the lower anterior gingiva. Radiographs showed bone affected by vertical and horizontal loss and enlargement of periodontal space. The histopathological features showed atypical cartilage arranged in lobules compatible with chondrosarcoma. Immunohistochemistry showed that tumor cells were immunoreactive for the anti-vimentin and S-100 antibodies. Moreover, no tumor cells had been immunostained by anti-p53. Treatment consisted of chemotherapy, followed by radical surgery and postsurgery treatment with an association of radio and chemotherapy. After one year, no signs of recurrence have been observed.
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Affiliation(s)
- P R Ferreti Bonan
- Oral Pathology Unit, School of Dentistry, State University of Montes Claros, UNIMONTES Montes Claros, Minas Gerais, Brazil.
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25
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26
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Martelli-Junior H, Lemos DP, Silva CO, Graner E, Coletta RD. Hereditary Gingival Fibromatosis: Report of a Five-Generation Family Using Cellular Proliferation Analysis. J Periodontol 2005; 76:2299-305. [PMID: 16332243 DOI: 10.1902/jop.2005.76.12.2299] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Hereditary gingival fibromatosis (HGF) is an uncommon condition characterized by an accumulation of extracellular matrix resulting in a fibrotic enlargement of the gingiva. The goal of this article is to describe one kindred affected with HGF and discuss the diagnosis, treatment, and control of the disease. The pattern of inheritance, histopathologic characteristics, and proliferative potential of epithelial and mesenchymal cells of HGF are also emphasized. METHODS To characterize the pattern of inheritance and the clinical appearance of gingival overgrowth, 117 family members were examined. The recurrence risk was estimated by the use of a genetic analysis program. Immunohistochemistry against the proliferating cell nuclear antigen (PCNA) and pKi-67 was performed to assess cellular proliferation of normal gingiva (NG) and HGF cells. RESULTS Examination of the family pedigree demonstrated an autosomal dominant trait of inheritance, and a sibling recurrence risk of 0.085 and an offspring recurrence risk of 0.078, indicating that HGF was a consequence of genetic alteration with low penetrance. Unaffected and affected members transmitted the disease to their offspring. The affected patients showed a generalized but mild gingival overgrowth. Surgical treatment consisted of a combination of gingivectomy and gingivoplasty. Histologic examination showed that the gingival lesions of all patients were quite similar, with increased amounts of collagen fiber bundles in the connective tissue. Immunohistochemistry revealed that the proliferative potential of epithelial cells was significantly higher in the HGF group compared to the NG group, whereas mesenchymal cells from both groups were negative for the proliferative markers. CONCLUSION Our data demonstrated that, in the studied family, HGF is transmitted by an autosomal dominant pattern with incomplete disease penetrance, and although the gingival enlargement resulted from an excessive accumulation of collagen fibers, HGF is characterized by an increase in the proliferation rate of epithelial cells.
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Affiliation(s)
- H Martelli-Junior
- Stomatology Clinic, Dental School, University of Montes Claros, Montes Claros, Minas Gerais, Brazil
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27
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Rangel ALCA, Coletta RD, Almeida OP, Graner E, Lucena A, Saldiva PHN, Vargas PA. Parotid mycobacteriosis is frequently caused by Mycobacterium tuberculosis in advanced AIDS. J Oral Pathol Med 2005; 34:407-12. [PMID: 16011609 DOI: 10.1111/j.1600-0714.2005.00331.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Tuberculosis is one of the leading infectious diseases in the world, with more than 2 million new cases annually. It is one of the main causes of death of human immunodeficiency virus (HIV)-positive patients, involving multiple organs and particularly the lungs. Nevertheless there are few consistent studies about tuberculosis involving the parotid of HIV patients. The objective of this work was to describe the histological and immunohistochemical characteristics of 10 cases of mycobacteriosis involving the parotid of autopsied patients with advanced acquired immunodeficiency syndrome (AIDS), including identification of the Mycobacterium species. METHODS Detection of 'M. tuberculosis complex' was performed by polymerase chain reaction (PCR) and ligase chain reaction (LCR) and Mycobacterium avium by PCR. RESULTS All cases showed involvement of intraparotid lymph nodes, but the glandular parenchyma was affected in only three cases. Most of the cases (80%) presented a chronic non-caseating granulomatous inflammation, and in two cases predominated foamy macrophages, full of bacteria, and no granuloma formation. In areas of mycobacteriosis, macrophages predominated followed by TCD8, B and TCD4 lymphocytes. All cases were infected by Mycobacterium genus and 'M. tuberculosis complex' was detected in five cases by LCR and in eight by PCR, while M. avium was positive in one case only, which was also positive for M. tuberculosis. CONCLUSIONS Parotid mycobacteriosis in advanced AIDS is characterized by intraparotid lymph node non-caseating inflammatory granulomatous lesion, caused mainly by M. tuberculosis.
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Affiliation(s)
- A L C A Rangel
- Oral Pathology, Oral Diagnosis Department, Dental School, University of Campinas, Piracicaba-SP, Brazil
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28
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Abstract
Peutz-Jeghers syndrome (PSJ) is a relatively rare but well-recognized condition, with a prevalence of approximately one in 120,000 births in the USA. It is generally inherited as an autosomal dominant trait, although 35% of cases are new mutations. This disorder is characterized by melanocytic macules on the hands, feet, peri-oral skin and oral mucosa, and multiple gastrointestinal hamartomatous polyps. People with PSJ have an increased risk for developing a variety of malignant tumours. The aim of the present study was to report one case of PSJ in a 14-year-old boy with mucocutaneous pigmentation associated with duodenal hamartomatous polyps.
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Affiliation(s)
- C M Pereira
- Department of Semiology, School of Dentistry of Piracicaba, State University of Campinas, Piracicaba/SP, Brazil
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29
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Zecchin KG, Pereira MC, Coletta RD, Graner E, Jorge J. Ovariectomy reduces the gelatinolytic activity and expression of matrix metalloproteinases and collagen in rat molar extraction wounds. Calcif Tissue Int 2005; 76:136-45. [PMID: 15549640 DOI: 10.1007/s00223-004-0013-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2004] [Accepted: 06/02/2004] [Indexed: 11/25/2022]
Abstract
Osteoporosis is commonly associated with estrogen deficiency. However, the mechanisms by which the lack of this hormone causes bone loss are poorly understood. The bone structure of the oral cavity seems to be affected by estrogen deficiency, since a delayed healing process after tooth extraction has been observed after ovariectomy in rats. The aim of this study was to describe the effect of the absence of estrogen on the expression and activity of matrix metalloproteinases (MMC)-2 and -9 and expression of types I and III collagens in the alveolar granulation tissue of young female rats after tooth extraction. Sixty-six, four-week-old female rats underwent bilateral ovariectomies (OVX) or sham operations. Three weeks later, both first and second mandibular molars were extracted and the animals were killed by cervical dislocation 3, 5, or 7 days after tooth extraction. The granulation tissues were collected from the extracted alveolar sockets and used for zymographic, Western blot, or reverse transcription polymerase chain reaction (RT-PCR) analysis. There was a gradual increase on the expression of all studied proteins as well as MMP-2 and -9 activities in the periods after surgery. In contrast, OVX animals showed a significant decrease in the gelatinolytic activities and expression of MMP-2 and -9 and types I and III collagens. The results presented here in suggest that the absence of estrogen may possibly contribute to the delayed alveolar wound healing by interfering with the extracellular matrix turnover.
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Affiliation(s)
- K G Zecchin
- Department of Oral Pathology and Genetics, School of Dentistry of Piracicaba, UNICAMP, Limeira Avenue 901-13414-903, CP 52, Piracicaba, São Paulo, Brazil
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30
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Almeida JP, Coletta RD, Silva SD, Agostini M, Vargas PA, Bozzo L, Graner E. Proliferation of Fibroblasts Cultured From Normal Gingiva and Hereditary Gingival Fibromatosis Is Dependent on Fatty Acid Synthase Activity. J Periodontol 2005; 76:272-8. [PMID: 15974853 DOI: 10.1902/jop.2005.76.2.272] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Fatty acid synthase (FAS) is the enzyme that synthesizes palmitate from malonyl-CoA and acetyl-CoA. Recent studies have shown that FAS is overexpressed in human cancers and that its activity is necessary for cell proliferation. Hereditary gingival fibromatosis (HGF) is a genetic disease manifested as a progressive enlargement of the gingiva. The pathogenesis of this condition is not understood; however, a proliferative advantage of HGF fibroblasts in comparison with cells from normal gingiva (NG) has been described. The aim of this study was to investigate the role of FAS in NG and HGF fibroblast proliferation. METHODS NG and HGF fibroblasts had their proliferative potential assessed by automated cell counting and immunocytochemistry against Ki-67 or proliferating cell nuclear antigen (PCNA). The production of FAS, androgen receptor (AR), and ErbB2 was analyzed by Western blot and the pattern of FAS expression studied by immunocytochemistry. FAS activity was blocked by the specific inhibitor cerulenin. RESULTS Higher proliferation rates were found in fibroblasts isolated from HGF than from NG. HGF fibroblasts with greater proliferative potential produced more FAS and AR than the cell lines with lower growth rates, and all studied cell lines produced similar amounts of the ErbB2 protein. In addition, the FAS inhibitor cerulenin was able to significantly reduce the proliferation of both NG and HGF cells. CONCLUSIONS These results show that FAS is expressed by gingival fibroblasts and that highly proliferative HGF cells produced more FAS and AR than the other fibroblast cell lines. Moreover, FAS inhibition significantly reduced both NG and HGF fibroblast growth, suggesting a role for the androgen-driven fatty acid biosynthesis in their proliferation.
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Affiliation(s)
- J P Almeida
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, University of Campinas Piracicaba, SP, Brazil
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Cotrim P, Martelli-Junior H, Graner E, Sauk JJ, Coletta RD. Cyclosporin A induces proliferation in human gingival fibroblasts via induction of transforming growth factor-beta1. J Periodontol 2004; 74:1625-33. [PMID: 14682659 DOI: 10.1902/jop.2003.74.11.1625] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Cyclosporin A (CsA) is a widely used immunosuppressant that causes significant side effects including gingival overgrowth. The pathogenesis of this condition is not fully understood; however, recent studies show that CsA regulates the transcription of several cytokines including transforming growth factor-beta 1 (TGF-beta1). In this study, we evaluated the effects of CsA and TGF-beta1 on human normal gingival (NG) fibroblast proliferation, and explored a possible autocrine stimulation of TGF-beta1 as a cellular regulator of proliferation induced by CsA in NG fibroblasts. METHODS NG fibroblast cell lines were incubated with increasing concentrations of CsA or TGF-beta1 and the proliferation index determined by automatic cell counting, BrdU incorporation, PCNA expression, and mitotic potential. To determine the effect of TGF-beta1 on the proliferation rate of NG fibroblasts under CsA treatment, NG fibroblast cultures were simultaneously treated with CsA and antisense oligonucleotides against the translation-start site of the TGF-beta1 mRNA. RESULTS Treatment of NG fibroblasts with CsA or TGF-beta1 significantly stimulated the cell proliferation in a dose-dependent manner. Furthermore, neutralization of TGF-beta1 production in CsA-treated NG fibroblasts inhibited CsA's effect on NG fibroblast proliferation, demonstrating an autocrine stimulatory effect of TGF-beta1 in CsA-treated NG fibroblast proliferation. CONCLUSION The results presented here suggest that CsA stimulatory induction of NG fibroblast proliferation is mediated via TGF-beta1 in an autocrine fashion.
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Affiliation(s)
- P Cotrim
- Discipline of Oral Pathology, University of Campinas Dental School, Piracicaba, São Paulo, Brazil
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Kaminagakura E, Andrade CR, Rangel ALCA, Coletta RD, Graner E, Almeida OP, Vargas PA. Sebaceous adenoma of oral cavity: report of case and comparative proliferation study with sebaceous gland hyperplasia and Fordyce's granules. Oral Dis 2003; 9:323-7. [PMID: 14629335 DOI: 10.1034/j.1601-0825.2003.00956.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Sebaceous adenoma (SA) is a rare solitary tumour with a predilection for the forehead and scalp. In the English literature, less than 10 cases of SA have been described in the oral cavity. The objective of this study was to examine the clinicopathologic features and evaluate the expression of epidermal growth factor and its receptor, estrogen receptor and androgen receptor in SA and in its differential diagnoses including sebaceous gland hyperplasia (SGH) and Fordyce's granules (FG). Additionally, we analysed the proliferative potential of sebaceous cells from SA, SGH and FG by measuring proliferating cell nuclear antigen (PCNA) expression and quantification of argyrophilic nuclear organizer regions (AgNORs). The SA showed many clinicopathologic similarities to cases previously reported including the biphasic population of cells, in the periphery of lobules undifferentiated basaloid cells whereas the central area was formed by mature sebocytes. SA was composed of 198 lobules of sebaceous cells, whereas SGH and FG showed a mean of 21 +/- 7.81 and 5.84 +/- 2.83, respectively. The AgNOR and PCNA indices were similar in SA, SGH and FG. These data suggest that lobule counts may be used as additional criteria in distinguishing SA of the oral cavity from other intraoral sebaceous gland lesions.
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Affiliation(s)
- E Kaminagakura
- Department of Oral Pathology, University of Campinas, Dental School, Piracicaba-SP, Brazil
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33
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Araujo CSA, Graner E, Almeida OP, Sauk JJ, Coletta RD. Histomorphometric characteristics and expression of epidermal growth factor and its receptor by epithelial cells of normal gingiva and hereditary gingival fibromatosis. J Periodontal Res 2003; 38:237-41. [PMID: 12753359 DOI: 10.1034/j.1600-0765.2003.00013.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The objective of this study was to examine the histomorphometric features and evaluate the expression of epidermal growth factor (EGF) and transmembranic receptor (EGFr) and the proliferative potential of epithelial cells from normal and hereditary gingival fibromatosis (HGF) gingival tissues. BACKGROUND EGF is a multifunctional cytokine with a variety of biological effects including stimulation of cell proliferation by binding to its specific EGFr. METHODS Immunohistochemistry was performed to measure EGF and EGFr expression and the epithelial cell proliferation was determined by measuring proliferating cell nuclear antigen (PCNA). RESULTS Histomorphometric evaluation indicated that in HGF the mean height of the epithelial papillae was higher compared to the normal gingiva (NG), whereas mean epithelial area and number of epithelial papillae were quite similar in both groups. The EGF and EGFr positive cells were observed in the basal, spinous and granular cell layers of both normal and HGF tissues, with a gradual reduction from the basal layer. Although the expressions of EGF and EGFr in the control group were significantly higher than those from HGF, in HGF the epithelial papilla tips showed increased number of proliferating cells and elevated expression of EGF and EGFr. There was a correlation between the proliferative potential of epithelial cells and the expression of EGF or EGFr only in the epithelial papilla tips of HGF gingiva. CONCLUSION Our data suggest that EGF and EGFr in the oral epithelium of HGF gingiva may stimulate epithelial cell proliferation, with the resultant apical migration of the oral epithelium and formation of the slender deep epithelial papillae; however, without hyperplastic alterations.
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Affiliation(s)
- C S A Araujo
- Department of Oral Pathology, Dental School, University of Campinas, Piracicaba, SãoPaulo, Brazil
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34
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Martelli-Junior H, Cotrim P, Graner E, Sauk JJ, Coletta RD. Effect of transforming growth factor-beta1, interleukin-6, and interferon-gamma on the expression of type I collagen, heat shock protein 47, matrix metalloproteinase (MMP)-1 and MMP-2 by fibroblasts from normal gingiva and hereditary gingival fibromatosis. J Periodontol 2003; 74:296-306. [PMID: 12710748 DOI: 10.1902/jop.2003.74.3.296] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Increased collagen and extracellular matrix deposition within the gingiva is the main characteristic feature of hereditary gingival fibromatosis (HGF). To date, it is not well established if these events are a consequence of alterations in the collagen and other extracellular matrix molecules synthesis or disturbances in the homeostatic equilibrium between synthesis and degradation of extracellular matrix molecules. Cytokines are important regulators of expression of the profibrogenic genes, including type I collagen and its molecular chaperone heat shock protein (Hsp)47 and proteolytic enzymes degrading extracellular matrix such as matrix metalloproteinases-1 and -2 (MMP-1 and MMP-2). METHODS In this study, we analyzed the expression and production of type I collagen, Hsp47, MMP-1, and MMP-2 in normal gingiva (NG) and HGF fibroblasts, and investigated the effects of transforming growth factor-beta1 (TGF-beta1), interleukin-6 (IL-6) and interferon-gamma (IFN-gamma) on the expression of these genes by NG and HGF fibroblasts. RESULTS Our results obtained from semi-quantitative reverse transcription-polymerase chain reactions (RT-PCR), Western blots, enzyme-linked immunosorbent assays (ELISA), and enzymographies clearly demonstrated that the expression and production of type I collagen and Hsp47 were significantly higher in fibroblasts from HGF than from NG, whereas MMP-1 and MMP-2 expression and production were lower in fibroblasts from HGF patients. Addition of TGF-beta1 and IL-6, which are produced in greater amounts by HGF fibroblasts, promoted an increase in type I collagen and Hsp47 and a decrease in MMP-1 and MMP-2 expression. IFN-gamma reduced both type I collagen and Hsp47 expression, whereas it had a slight effect on the expression of MMP-1 and MMP-2. CONCLUSION These patterns of expression and production suggest that enhanced TGF-beta1 and IL-6 production simultaneously increase the synthesis and reduce the proteolytic activities of fibroblasts from patients with HGF, which may favor the accumulation of extracellular matrix observed in patients with this condition.
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Affiliation(s)
- H Martelli-Junior
- Discipline of Oral Pathology, University of Campinas Dental School, Piracicaba, São Paulo, Brazil
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35
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Cotrim P, de Andrade CR, Martelli-Junior H, Graner E, Sauk JJ, Coletta RD. Expression of matrix metalloproteinases in cyclosporin-treated gingival fibroblasts is regulated by transforming growth factor (TGF)-beta1 autocrine stimulation. J Periodontol 2002; 73:1313-22. [PMID: 12479636 DOI: 10.1902/jop.2002.73.11.1313] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Gingival overgrowth is a common side effect following the administration of cyclosporin A (CsA). The pathogenesis of this condition is not fully understood; however, recent studies show that CsA regulates the transcription of several cytokines including transforming growth factor-beta1 (TGF-beta1). The aim of this study was to investigate the potential role of TGF-beta1 in the pathogenesis of CsA-induced gingival overgrowth, exploring a possible autocrine stimulation of TGF-beta1 as a cellular regulator of synthesis of matrix metalloproteinases (MMPs) and its tissue inhibitors (TIMPs). METHODS Gingival fibroblasts from human normal gingiva were incubated with increasing concentrations of CsA, cultured for 24 hours, and the expression and production of TGF-beta1 determined by semiquantitative reverse transcriptase-polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively. MMP and TIMP mRNA expression levels were also analyzed by RT-PCR. To determine the effect of TGF-beta1 on the expression of MMP and TIMP by human gingival fibroblasts under CsA treatment, human gingival fibroblast cultures were treated with sense oligonucleotides (SON) or antisense oligonucleotides (AON). RESULTS CsA simultaneously stimulated TGF-beta1 expression and production and inhibited expression of MMP-1 and MMP-2 by human gingival fibroblasts, whereas CsA has a slight effect on TIMP-1 and TIMP-2 expression. AON reduced TGF-beta1 production as demonstrated by ELISA, whereas TGF-beta1 mRNA expression levels were not significantly modified. The inhibition of TGF-beta1 production by AON modulated MMP expression, demonstrating the autocrine inhibitory effect of TGF-beta1 in CsA-treated human gingival fibroblasts. CONCLUSIONS The data presented here suggest that TGF-beta1 in an autocrine fashion may contribute to a reduction of proteolytic activity of human gingival fibroblasts in CsA-induced gingival overgrowth, which favors the accumulation of extracellular matrix.
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Affiliation(s)
- P Cotrim
- Discipline of Oral Pathology, University of Campinas Dental School, Piracicaba, São Paulo, Brazil
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36
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Coletta RD, Cotrim P, Almeida OP, Alves VAF, Wakamatsu A, Vargas PA. Basaloid squamous carcinoma of oral cavity: a histologic and immunohistochemical study. Oral Oncol 2002; 38:723-9. [PMID: 12167426 DOI: 10.1016/s1368-8375(02)00010-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Basaloid squamous carcinoma (BSC) is an aggressive variant of squamous cell carcinoma (SCC) with a predilection for the upper aerodigestive tract. In the English literature, approximately 40 cases of BSC have been described in the oral cavity. BSC has frequently been confused with adenoid cystic carcinoma (ACC), basal cell adenocarcinoma, and undifferentiated SCC. The purpose of the investigation was to examine the histological features and immunohistochemical expression of differentiation-related substances, including cytokeratin (CK) subtypes, vimentin, S-100, chromogranin, laminin, and type IV collagen, for the characterization of biological features of these tumours. We studied three cases of BSC of the oral cavity, three cases of ACC, and one case of basal cell adenocarcinoma. Well-differentiated and undifferentiated SCCs were also studied for comparison. The BSCs showed many histopathologic similarities to cases previously reported. Among the CK subtypes analyzed, CK14 was the only subtype expressed by all basaloid cells of BSC. Potentially useful for the differential diagnosis was the finding of CKs 7 and 19 expression in the basaloid cells of ACC, and CKs 7 and 8 in basal cell adenocarcinoma. In BSCs, laminin and type IV collagen were found in the microcystic spaces between basaloid cells, but neither ACCs nor basal cell adenocarcinoma showed this feature. These data suggest that immunohistochemical findings are helpful in distinguishing BSC of the oral cavity from other histopathologically similar tumours.
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Affiliation(s)
- R D Coletta
- Department of Oral Pathology, University of Campinas Dental School, 13414-018 Piracicaba, São Paulo, Brazil
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37
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de Andrade CR, Cotrin P, Graner E, Almeida OP, Sauk JJ, Coletta RD. Transforming growth factor-beta1 autocrine stimulation regulates fibroblast proliferation in hereditary gingival fibromatosis. J Periodontol 2001; 72:1726-33. [PMID: 11811509 DOI: 10.1902/jop.2001.72.12.1726] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Hereditary gingival fibromatosis (HGF) is a rare oral disease characterized by a slow and progressive enlargement of both the maxilla and mandible gingiva. Increased proliferation, elevated synthesis of extracellular matrix, particularly collagen, and reduced levels of matrix metalloproteinases seem to contribute to the pathogenesis of gingival overgrowth in HGF patients. Transforming growth factor-beta1 (TGF-beta1) is an important cytokine thought to play a major role in fibrotic disorders such as HGF due to its ability to stimulate the synthesis and reduce the degradation of extracellular matrix. In HGF fibroblasts, TGF-beta1 autocrine stimulation reduces expression and production of matrix metalloproteinases. However, the role of TGF-beta1 in fibroblast growth modulation has not been established in this disease. METHODS The aim of this study was to confirm the increased proliferation rate of HGF fibroblast cell lines and to explore a possible autocrine role of TGF-beta1 as a cell growth stimulator by blocking production of this endogenous cytokine using 2 well-established systems: antisense oligonucleotides and neutralizing antibodies. RESULTS Four different cellular proliferation assays, bromodeoxyuridine labeling, argyrophilic nucleolar organizing region staining, proliferating cell nuclear antigen, and mitotic indexes, confirmed that fibroblasts from HGF proliferate significantly faster than those from normal gingiva. Antisense oligonucleotides reduced TGF-beta1 production as demonstrated by capture enzyme-linked immunosorbent assay, whereas TGF-beta1 expression levels were not significantly modified. Blocking TGF-beta1 synthesis with oligonucleotides or its activity with specific antibodies resulted in a decreased magnitude of HGF fibroblast proliferation. CONCLUSION These results are consistent with the existence of an autocrine role of TGF-beta1 as a stimulator of HGF fibroblast proliferation.
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Affiliation(s)
- C R de Andrade
- University of Campinas Dental School, Piracicaba, São Paulo, Brazil
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38
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Spolidório LC, Merzel J, Villalba H, Vargas PA, Coletta RD, Almeida OP. Morphometric evaluation of gingival overgrowth and regression caused by cyclosporin in rats. J Periodontal Res 2001; 36:384-9. [PMID: 11762874 DOI: 10.1034/j.1600-0765.2001.360606.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Cyclosporin A is a selective immunosuppressant, used in organ transplants to prevent graft rejection. Cyclosporin A can cause various side effects including gingival overgrowth. The aim of this work was to evaluate gingival overgrowth of rats treated daily with 10 mg/kg bodyweight of cyclosporin A for 60 days, as well as the regression after the interruption of treatment. All rats treated with cyclosporin A developed gingival overgrowth, with increased thickness of the epithelium, height and width of the connective tissue. The density of fibroblasts and collagen fibers also increased. Five to 90 days after the interruption of treatment with cyclosporin A, there was a progressive reduction of the gingival volume and of collagen fibers and fibroblast densities. The reduction was more pronounced in the initial periods and after 90 days did not return to the normal values.
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Affiliation(s)
- L C Spolidório
- Department of Oral Pathology, Dental School, Araraquara, University of State of Sao Paulo, Sao Paulo, Brazil
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Silva HC, Coletta RD, Jorge J, Bolzani G, de Almeida OP, Graner E. The effect of cyclosporin A on the activity of matrix metalloproteinases during the healing of rat molar extraction wounds. Arch Oral Biol 2001; 46:875-9. [PMID: 11420061 DOI: 10.1016/s0003-9969(01)00045-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Cyclosporin A (CyA) is a cyclic peptide used as an immunosuppressive agent because it can block the synthesis of interleukin-2 and other cytokines produced by CD4+ lymphocytes. It is widely used for the prevention of allograft rejection and treatment of autoimmune diseases. Several side-effects of CyA treatment have been reported, among which are chronic nephrotoxicity, hepatotoxicity and neurotoxicity, lymphoproliferative neoplasms, hypertension, thromboembolic complications and gingival overgrowth. Here, using a rat molar model, it is demonstrated that CyA immunosuppression inhibits the activity of matrix metalloproteinases 2 and 9 in the early phase of granulation tissue in the healing dental socket. These observations suggest that CyA may interfere with the wound healing following dental extractions.
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Affiliation(s)
- H C Silva
- Department of Oral Pathology and Genetics, School of Dentistry of Piracicaba, UNICAMP, Avenida Limeira 901, 13414-018, CP 52, SP, Piracicaba, Brazil
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40
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Abstract
Three cases of generalized and severe HGF in young patients of the same family without other features are reported. The purpose of this article is to present documented cases and discuss the identification, treatment, and control of the disease. The histopathological characteristics of HGF are emphasized.
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Affiliation(s)
- L Bozzo
- Discipline of Oral Pathology, University of Campinas Dental School, Caixa Postal 52, 13414-018, Piracicaba-SP, Brazil
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41
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Coletta RD, Cotrim P, Vargas PA, Villalba H, Pires FR, de Moraes M, de Almeida OP. Basaloid squamous carcinoma of the oral cavity: report of 2 cases and study of AgNOR, PCNA, p53, and MMP expression. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2001; 91:563-9. [PMID: 11346736 DOI: 10.1067/moe.2001.113161] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Basaloid squamous carcinoma (BSC) is an uncommon aggressive variant of squamous cell carcinoma (SCC) with a predilection for the head and neck. In the English literature, approximately 40 cases of BSC in the oral cavity have been described. In this study, the clinicopathologic features of 2 cases of BSC affecting the buccal mucosa are reported. In addition, we compare the proliferative and invasive potential of BSC cells with that of poorly differentiated SCC cells matched for age, sex, site, and TNM status. Proliferative activity was studied through use of the argyrophilic nuclear organizer region (AgNOR) method and immunohistochemical quantification of proliferating cell nuclear antigen (PCNA). The invasive potential was evaluated through use of the semiquantitative reverse transcriptase-polymerase chain reaction (RT-PCR) for matrix metalloproteinases (MMPs). Alterations of p53 were also investigated through use of immunohistochemistry. The tumors showed many clinical and histopathologic similarities to tumors in cases previously reported. The AgNOR and PCNA indices were significantly higher in the 2 cases of BSC than in the cases of SCC. Immunostaining for p53 protein showed a higher percentage of positive cells and more intense staining in the BSC tissues than in the SCC tissues. RT-PCR studies clearly demonstrated that the expression of MMP-1, MMP-2, and MMP-9 was higher in cells from BSCs than in cells from SCCs. Taken together, the data described here are compatible with the concept that BSC has a more aggressive biologic behavior than conventional SCC.
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Affiliation(s)
- R D Coletta
- Department of Oral Surgery, University of Campinas Dental School, Caixa Postal 52, 13414-018 Piracicaba, São Paulo, Brazil
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42
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Hebert C, Coletta RD, Norris K, Nikitakis N, Lopes M, Sauk JJ. Non-natural CBP2 binding peptides and peptomers modulate carcinoma cell adhesion and invasion. J Cell Biochem 2001; 82:145-54. [PMID: 11400171 DOI: 10.1002/jcb.1146] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A combinatorial approach that utilized a repertoire of bacteriophage-peptides has identified a number of non-natural CBP2 binding peptides. Moreover, co-localization of some of these peptides with CBP2 in a number of tumor cell lines demonstrated that the peptides were directed to an intracellular location spatially coincident with the normal distribution of CBP2 [Sauk et al., 2000]. From among these sequences WHYPWFQNWAMA and LDSRYSLQAAMY were the most effective CBP2 binding peptides and best fulfilled the combinatorial motif containing deep hydrophobic pockets. When the hydropathic profiles of collagen alpha1(IV) and alpha2 (IV) were compared with these dodecapeptides, the hydropathic profiles of WHYPWFQNWAMA and LDSRYSLQAAMY closely matched those of alpha1(IV) 414-452 and alpha1(IV)531-543. These peptides were shown to be functional peptidomimics and possessed the ability to alter cell adhesion and invasion of human squamous cell carcinoma cell lines. Peptomers were formed of these non-natural peptides to explore the role that a repetitive peptide may have on cell adhesion. The enhanced cell adhesion observed with the peptomers required both CBP2 antibodies and integrin antibodies for inhibition. The enhanced adhesion observed even in the face of combined antibody inhibition was consistent with such complexes possessing correspondingly slower dissociation rates. Thus, suggesting that peptomers may function in a like manner to multimeric peptide MHC complexes (tetramers) binding more than one cell receptor on a specific cell. These findings evoke both peptidomimics of native ligands and their peptomers as potential reagents by which to target tumor cells for chemotherapy, imaging, or retargeting viral vectors for gene therapy.
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Affiliation(s)
- C Hebert
- Department of Pathology, University of Maryland, Baltimore 666 W. Baltimore Street Baltimore, Maryland 21201, USA
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43
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Coletta RD, Almeida OP, Ferreira LR, Reynolds MA, Sauk JJ. Increase in expression of Hsp47 and collagen in hereditary gingival fibromatosis is modulated by stress and terminal procollagen N-propeptides. Connect Tissue Res 2000; 40:237-49. [PMID: 10757112 DOI: 10.3109/03008209909000702] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
HGF is a rare oral condition characterized by a slow, progressive enlargement of the gingiva, involving both the maxilla and mandible. HGF provides a model for the study of regulatory features of conditions characterized by connective tissue hyperplasia. In this study, the culture characteristics of gingival fibroblasts derived from patients of the same family with HGF (n = 4) were similar with regard to cell cycle analysis. Flow cytometric DNA content analysis revealed uniform DNA diploidy for fibroblasts cultured from NG and HGF. NG cells showed a low S-phase fraction (19.8%) and G2/M fraction (5.8%) and a relatively high G1 phase fraction (74%). In contrast, HGF cells from all members of the tested kindred, exhibited diploid cells with a higher S-phase (40.9%) and G2/M (10.1%) fraction and a relatively low G1 phase fraction (40.9%). Furthermore, we demonstrated that the expression and production of Hsp47 parallels the increased levels of collagen secretion observed in HGF. In addition, we show that Hsp47 and collagen are coordinately regulated following stress via a feedback mechanism mediated by N-terminal procollagen propeptides. Utilizing confocal microscopy and antibodies directed against GST-fusion proteins encompassing the pro alpha1(I) N-propeptide globular domain (NP1) (residues 23-108), it was apparent that this regulatory mechanism does not involve significant interaction with Hsp47's chaperoning of procollagen.
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Affiliation(s)
- R D Coletta
- Department of Oral Pathology, Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
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44
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Sauk JJ, Coletta RD, Norris K, Hebert C. Binding motifs of CBP2 a potential cell surface target for carcinoma cells. J Cell Biochem 2000; 78:251-63. [PMID: 10842320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Previously we have shown (Hebert et al. [1999] J. Cell Biochem. 73:248-258) that among many cell lines the CBP2 gene product, Hsp47, eludes its retention receptor, erd2P, resulting in the appearance of Hsp47 on the cell surface associated with the tetraspanin protein CD9. Since Hsp47 possesses a highly restricted binding cleft, random peptide display libraries were used to characterize peptides binding to Hsp47 and then to target this protein on carcinoma cell lines in vitro. Comparison of the clones obtained from panning revealed little specific homology based on sequence alone. To determine whether carcinoma cells expressing Hsp47 could selectively take up the selected bacteriophages, traditional immunofluorescence and confocal microscopy were employed. These studies revealed that phage-displaying Hsp47 binding peptides bound to cell lines expressing Hsp47 and that the peptides were rapidly taken up to a location coincident with Hsp47 staining. These observations were confirmed by cytometric analyses. These data indicate that CBP2 product may provide a molecular target for chemotherapy and/or imaging of malignancies.
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Affiliation(s)
- J J Sauk
- Department of Pathology, University of Maryland, Baltimore, Maryland 21201, USA.
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45
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Coletta RD, Almeida OP, Reynolds MA, Sauk JJ. Alteration in expression of MMP-1 and MMP-2 but not TIMP-1 and TIMP-2 in hereditary gingival fibromatosis is mediated by TGF-beta 1 autocrine stimulation. J Periodontal Res 1999; 34:457-63. [PMID: 10697802 DOI: 10.1111/j.1600-0765.1999.tb02281.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hereditary gingival fibromatosis (HGF) is characterized by an excess accumulation of extracellular matrix (ECM) resulting in a generalized and fibrotic enlargement of the gingiva. To investigate some of the regulatory features of this condition, gingival fibroblasts from normal gingiva (NG) and HGF were examined for the expression and production of matrix metalloproteinases (MMPs) and their inhibitors, tissue matrix metalloproteinases inhibitor (TIMPs). Our results, obtained from 2 different assays, semi-quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) and enzymography, clearly demonstrated that the expression and production of MMP-1 and MMP-2 was significantly lower in fibroblasts from HGF than from NG. Interestingly, TIMP-1 and TIMP-2 expression from NG cells was shown to be slightly higher to those from HGF. Addition of antibodies against transforming growth factor-beta 1 (TGF-beta 1), which is produced in greater amounts by HGF fibroblasts, resulted in a slight increase in MMP-1 and a decrease in MMP-2 expression, whereas TIMP-1 and TIMP-2 expressions were unaffected. These patterns of expression and production suggest that enhanced TGF-beta 1 production reduce the proteolytic activities of HGF fibroblasts, which favor the accumulation of ECM.
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Affiliation(s)
- R D Coletta
- Department of Oral Pathology, Dental School, University of Campinas Piracicaba, São Paulo, Brazil.
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46
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Coletta RD, Almeida OP, Graner E, Page RC, Bozzo L. Differential proliferation of fibroblasts cultured from hereditary gingival fibromatosis and normal gingiva. J Periodontal Res 1998; 33:469-75. [PMID: 9879520 DOI: 10.1111/j.1600-0765.1998.tb02346.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Hereditary gingival fibromatosis (HGF) is an oral condition characterized by the enlargement of the gingiva of both the maxilla and mandible. To study the cell proliferation index of fibroblasts from HGF and normal gingiva (NG), cell cultures from 4 members of the same family with HGF and from 4 healthy patients were established. Our results obtained from 6 different cell proliferation assays clearly showed that the cell proliferation rate was significantly higher in fibroblasts from HGF than from normal gingiva. HGF and control fibroblasts in subconfluent culture densities were typically spindle, but in saturation density HGF cells were shorter than control cells. These data suggest that the higher proliferative index of HGF fibroblasts possibly has a role in the pathogenesis of gingival outgrowth in HGF patients.
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Affiliation(s)
- R D Coletta
- Discipline of Oral Pathology, Faculty of Odontology of Piracicaba-UNICAMP, São Paulo, Brazil
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Gerlach RF, Jorge J, de Almeida OP, Coletta RD, Zaia AA. Regional odontodysplasia. Report of two cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1998; 85:308-13. [PMID: 9540089 DOI: 10.1016/s1079-2104(98)90014-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Two cases of regional odontodysplasia in girls are reported; one affected the lower incisors, and the other the left maxilla. The first case was radiographically followed over a 6-year period, during which time the ghost teeth exhibited significant dentin formation, along with a resultant decrease in pulp size and relative normalization of the radicular anatomy. The second case involved the deciduous molars and the first permanent molar. In addition to tooth alterations, both cases exhibited many odontogenic epithelial islands and extensive areas of calcification in the mucosa. Diagnosis, causes, and treatment are discussed in the light of recent data.
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Affiliation(s)
- R F Gerlach
- Department of Oral Pathology, University of Campinas, Piracicaba São Paulo, Brazil.
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