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Vieira Costa R, Balbinot KM, da Silveira GCAR, Kataoka MSDS, de Menezes SAF, Freitas VM, Vasconcelos ACU, Etges A, Martins Montalli VA, Santos FP, Alves Júnior SDM, Jaeger RG, Pinheiro JDJV. Prognostic value of the expression and localization of cell proliferation and apoptosis markers in unicystic ameloblastomas. Sci Rep 2024; 14:3856. [PMID: 38360984 PMCID: PMC10869795 DOI: 10.1038/s41598-024-54132-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 02/08/2024] [Indexed: 02/17/2024] Open
Abstract
The aim of this study was to verify whether the expression of cell proliferation and apoptosis markers in different types of unicystic ameloblastoma (UA) is associated with the location of neoplastic cells. Immunohistochemical study with a sample of 32 cases of UA, 11 cases of conventional ameloblastoma (CAM) and ten dental follicles (DF) cases was performed. Cell proliferation was assessed using Ki-67 status, and apoptosis by caspase-3 expression. Mural UA (MUA) showed a higher immunostaining of Ki-67 (p < 0.05) and a lower immunostaining of Caspase-3 (p < 0.05) compared with luminal and intraluminal subtypes of UA and CAM. The neoplastic cells of the MUA's cystic capsule showed a higher expression of Ki-67 protein (p < 0.0001) and a lower expression of Caspase-3 (p < 0.0001) compared with the lumen. DF showed lower Ki-67 and Caspase-3 immunostaining (p < 0.05) than neoplasms. The higher immunoexpression of Ki-67 and the lower immunoexpression of Caspase-3 in MUA, in the parenchyma cells within the cystic capsule, suggest an association between the biological behaviour and location of neoplastic cells in a tumour.
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Affiliation(s)
- Rebeca Vieira Costa
- Laboratory of Pathological Anatomy and Immunohistochemistry, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | - Karolyny Martins Balbinot
- Laboratory of Pathological Anatomy and Immunohistochemistry, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | | | - Maria Sueli da Silva Kataoka
- Cell Culture Laboratory, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | | | - Vanessa Morais Freitas
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Ana Carolina Uchoa Vasconcelos
- Center for the Diagnosis of Diseases of the Mouth, School of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457/607, Pelotas, Rio Grande do Sul, 96015-560, Brazil
| | - Adriana Etges
- Center for the Diagnosis of Diseases of the Mouth, School of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457/607, Pelotas, Rio Grande do Sul, 96015-560, Brazil
| | - Victor Angelo Martins Montalli
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Rua Dr. José Rocha Junqueira, 13-Pte. Preta, Campinas, SP, 13045-755, Brazil
| | - Fabricio Passador Santos
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Rua Dr. José Rocha Junqueira, 13-Pte. Preta, Campinas, SP, 13045-755, Brazil
| | - Sérgio de Melo Alves Júnior
- Laboratory of Pathological Anatomy and Immunohistochemistry, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | - Ruy Gastaldoni Jaeger
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - João de Jesus Viana Pinheiro
- Cell Culture Laboratory, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil.
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Kirschnick LB, Schuch LF, Gondak R, Rivero ERC, Gomes APN, Etges A, Tarquinio SBC, Mesquita RA, Caldeira PC, da Costa AAS, Mendonça EF, Dos Santos JN, Smit C, Robinson L, Tager EMJR, Mosqueda-Taylor A, Pontes HAR, de Andrade BAB, Fonseca TC, Abrahão AC, Agostini M, Romañach MJ, Alves FA, Jaguar GC, de Mendonça NF, Pinto MBR, da Silva LC, Lopes MA, Vargas PA, van Heerden W, Abreu LG, Martins MD, Vasconcelos ACU. Clinicopathological Features of Metastasis to the Oral and Maxillofacial Region-Multicenter Study. Head Neck Pathol 2023; 17:910-920. [PMID: 37902929 PMCID: PMC10739623 DOI: 10.1007/s12105-023-01588-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 09/29/2023] [Indexed: 11/01/2023]
Abstract
BACKGROUND This study aimed to investigate the clinicopathological features of metastases in the oral and maxillofacial regions. METHODS In this retrospective study, biopsy records were obtained from referral centers for oral and maxillofacial diagnosis in Brazil, Guatemala, Mexico, and South Africa. RESULTS A total of 120 cases were evaluated. Of these, 53.78% affected female patients, with a mean age of 57.64 years. Intraosseous lesions were more frequent, particularly in the posterior region of the mandible (49.58%). Clinically, most cases presented with symptomatic swelling, with an average evolution time of 25 months. The clinical diagnostic hypothesis in most instances was that of a malignant lesion. Breast cancer was the most common primary tumor location in females, while lung origin was most common in males. In most cases, the primary cancer was an adenocarcinoma (44.73%). The follow-up period was available for 29 cases, and out of these, 20 had died due to the disease. CONCLUSION Although this is a rare condition, clinicians should be aware that any oral lesions have the possibility of being metastatic, particularly in individuals with a previous history of cancer. The findings from this study could assist clinicians in prompt diagnosing these lesions and subsequent conducting oncologic assessments and treatment.
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Affiliation(s)
- Laura Borges Kirschnick
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Lauren Frenzel Schuch
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Rogério Gondak
- Department of Pathology, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | | | - Ana Paula Neutzling Gomes
- Diagnostic Center for Oral Diseases, Dental School, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Adriana Etges
- Diagnostic Center for Oral Diseases, Dental School, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | | | - Ricardo Alves Mesquita
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Patrícia Carlos Caldeira
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | - Jean Nunes Dos Santos
- Department of Oral Pathology, Postgraduate Program in Dentistry and Health, School of Dentistry, Universidade Federal da Bahia, Salvador, BA, Brazil
| | - Chané Smit
- Department of Oral and Maxillofacial Pathology, School of Dentistry, University of Pretoria, Pretoria, South Africa
| | - Liam Robinson
- Department of Oral and Maxillofacial Pathology, School of Dentistry, University of Pretoria, Pretoria, South Africa
| | - Elena María José Román Tager
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
- Pathology Section, Clinical Center of Head and Neck/Hospital Herrera Llerandi, Guatemala City, Guatemala
| | | | | | | | - Thamyres Campos Fonseca
- Department of Oral Diagnosis and Pathology, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Aline Corrêa Abrahão
- Department of Oral Diagnosis and Pathology, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Michelle Agostini
- Department of Oral Diagnosis and Pathology, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Mário José Romañach
- Department of Oral Diagnosis and Pathology, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Fábio Abreu Alves
- Stomatology Department, A. C. Camargo Hospital, São Paulo, SP, Brazil
| | | | | | | | - Luan César da Silva
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Márcio Ajudarte Lopes
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Pablo Agustin Vargas
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Willie van Heerden
- Department of Oral and Maxillofacial Pathology, School of Dentistry, University of Pretoria, Pretoria, South Africa
| | - Lucas Guimarães Abreu
- Department of Child and Adolescent Oral Health, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Manoela Domingues Martins
- Oral Diagnosis Department, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ana Carolina Uchoa Vasconcelos
- Diagnostic Center for Oral Diseases, Dental School, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
- Centro de Diagnóstico das Doenças da Boca - CDDB, Faculdade de Odontologia, Universidade Federal de Pelotas, Rua Gonçalves Chaves, 457, sala 607 , Pelotas, RS, Brazil.
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Barbieri S, Schuch LF, Cascaes AM, Gomes APN, Tarquinio SBC, Mesquita RA, Vasconcelos ACU, Etges A. Does smoking habit affect dendritic cell expression in oral squamous cell carcinoma? Braz Oral Res 2022; 36:e044. [PMID: 35293509 DOI: 10.1590/1807-3107bor-2022.vol36.0044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 11/03/2021] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to determine the presence of immature CD1a+ and mature CD83+ dendritic cells in oral squamous cell carcinoma, to compare immunoreactivity between smokers and nonsmokers, and to correlate the results with histopathological grading. In this observational study, twenty-eight paraffin-embedded biopsies of oral squamous cell carcinoma were retrospectively retrieved and submitted to immunohistochemistry for immature CD1a+ and mature CD83+. Descriptive and statistical analyses were performed. The sample consisted of 18 man (64.3%) and 10 women (35.7%), with a mean age of 64.6 years in the nonsmoker group and 53.2 years in the smoker group. The tongue (11 cases, 39.2%) was the most commonly affected anatomical site, followed by gingiva (6 cases, 21.4%). Histopathological grading revealed 7 low-grade and 7 high-grade malignancy cases in each group, and no correlation with the number of positive DCs. The number of immature CD1a+ was not significantly different between smoker and nonsmoker groups, while a lower number of mature CD83+ was detected in the smoker group (p = 0.001). Smoking changes the oral immune system and decreases the ability to activate and mature dendritic cells, which may influence the development and progression of oral squamous cell carcinoma.
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Affiliation(s)
- Silene Barbieri
- Universidade Federal de Pelotas - UFPel, School of Dentistry, Diagnostic Centre for Oral Diseases, Pelotas, RS, Brazil
| | - Lauren Frenzel Schuch
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Oral Diagnosis, Piracicaba, SP, Brazil
| | - Andreia Morales Cascaes
- Universidade Federal de Pelotas - UFPel, School of Dentistry, Diagnostic Centre for Oral Diseases, Pelotas, RS, Brazil
| | - Ana Paula Neutzling Gomes
- Universidade Federal de Pelotas - UFPel, School of Dentistry, Diagnostic Centre for Oral Diseases, Pelotas, RS, Brazil
| | | | - Ricardo Alves Mesquita
- Universidade Federal de Minas Gerais - UFMG, School of Dentistry, Department of Oral Surgery and Pathology, Belo Horizonte, MG, Brazil
| | | | - Adriana Etges
- Universidade Federal de Pelotas - UFPel, School of Dentistry, Diagnostic Centre for Oral Diseases, Pelotas, RS, Brazil
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Caldeira PC, Schuch LF, Tavares TS, Santos-Silva AR, Vargas PA, Pérez-de-Oliveira ME, de Almeida OP, de Souza LB, Gonzaga AKG, Mendonça EF, Sousa-Neto SS, Rivero ERC, Modolo F, Dos Santos JN, Manieri PR, Nonaka CFW, Alves PM, Libório-Kimura TN, da Costa Mendes TC, Etges A, Tarquinio SBC, Gomes APN, Abreu LG, Vasconcelos ACU. Impact of the COVID-19 pandemic on Public University Laboratories of oral and maxillofacial pathology - a Brazilian multicenter study. Oral Dis 2022; 28 Suppl 2:2423-2431. [PMID: 35080084 DOI: 10.1111/odi.14136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 08/07/2021] [Revised: 10/15/2021] [Accepted: 10/31/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate the impact of the COVID-19 pandemic on the number of diagnoses of oral and maxillofacial lesions in public laboratories after one year of COVID-19 outbreak in Brazil. MATERIAL AND METHODS This is a cross-sectional study. Biopsies submitted to histopathologic examination from March 2019 to February 2020 (pre-pandemic period) and from April 2020 to March 2021 (pandemic period) in nine Brazilian public oral pathology laboratories were retrieved and the number of diagnoses, types of lesion, and percentage changes during both periods were analyzed. RESULTS There were 7,389 diagnoses in the pre-pandemic period and 2,728 in the pandemic era, indicating a reduction of 63.08%. The reduction was 64.23% for benign lesions and 49.48% for malignant lesions, with a 50.64% reduction in squamous cell carcinoma. The largest decreases were observed in April 2020 and January 2021. CONCLUSION An important reduction in the diagnoses of benign and malignant lesions was noted in the Brazilian public oral pathology laboratories during the first year of the COVID-19 pandemic.
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Affiliation(s)
- Patrícia Carlos Caldeira
- Department of Oral Surgery, Pathology and Clinical Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lauren Frenzel Schuch
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, São Paulo, Brazil
| | - Thalita Soares Tavares
- Department of Oral Surgery, Pathology and Clinical Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Alan Roger Santos-Silva
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, São Paulo, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, São Paulo, Brazil
| | | | - Oslei Paes de Almeida
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, São Paulo, Brazil
| | - Lélia Batista de Souza
- Oral Pathology Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Amanda Katarinny Goes Gonzaga
- Oral Pathology Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Elismauro Francisco Mendonça
- Department of Stomatology (Oral Pathology), School of Dentistry, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Sebastião Silvério Sousa-Neto
- Department of Stomatology (Oral Pathology), School of Dentistry, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Elena Riet Correa Rivero
- Department of Pathology, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Filipe Modolo
- Department of Pathology, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Jean Nunes Dos Santos
- Laboratory of Oral Surgical Pathology, School of Dentistry, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Patrícia Rubia Manieri
- Laboratory of Oral Surgical Pathology, School of Dentistry, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | | | - Pollianna Muniz Alves
- Department of Dentistry, School of Dentistry, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brazil
| | - Tatiana Nayara Libório-Kimura
- Department of Pathology and Legal Medicine, School of Medicine, Federal University of Amazonas, Manaus, Amazonas, Brazil
| | | | - Adriana Etges
- Diagnostic Center for Oral Diseases, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | | | - Ana Paula Neutzling Gomes
- Diagnostic Center for Oral Diseases, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Lucas Guimarães Abreu
- Department of Child's and Adolescent's Oral Health, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Carolina Uchoa Vasconcelos
- Diagnostic Center for Oral Diseases, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
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de Arruda JAA, Schuch LF, Conte Neto N, de Souza LL, Rodrigues-Fernandes CI, Abreu LG, Soares CD, de Carvalho MGF, Agostini M, de Andrade BAB, Romañach MJ, Zanella VG, Barra MB, Martins MD, Souto GR, Etges A, Pontes HAR, Pontes FSC, Vargas PA, de Almeida OP, Santos-Silva AR, Lopes MA, Pires FR, Gomez RS, Fonseca FP, Mesquita RA. Oral and oropharyngeal lymphomas: A multi-institutional collaborative study. J Oral Pathol Med 2021; 50:603-612. [PMID: 34091952 DOI: 10.1111/jop.13211] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 06/02/2021] [Accepted: 06/02/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Lymphomas in the oral and oropharyngeal regions are relatively uncommon, and their diagnosis is challenging and complex due to the myriad histopathological subtypes. Herein, we report a large series of oral and oropharyngeal lymphomas and compare our data with the currently available literature. METHODS All cases diagnosed as lymphomas affecting the oral and oropharyngeal regions were retrospectively retrieved from seven Brazilian institutions. Clinicodemographic data and histopathological features were evaluated and described, while a comprehensive literature review was undertaken in order to compare our findings. RESULTS A total of 304 cases of oral and oropharyngeal lymphomas were obtained, mostly affecting individuals aged 60-69 years (n = 68) with a mean age at diagnosis of 54.2 ± 20.1 years. Males and females were equally affected. Mature B-cell neoplasms (87.2%) were the most common group, followed by mature T- and NK-cell neoplasms (11.2%) and precursor lymphoid neoplasms (1.6%). The most frequent subtypes in each group were diffuse large B-cell lymphomas, not otherwise specified (n = 99), extranodal NK/T-cell lymphomas, nasal type (n = 12), and B-lymphoblastic leukaemia/lymphomas, not otherwise specified (n = 4). The most commonly involved sites were the palate (26.3%), mandible (13%), and maxilla (10.5%). CONCLUSION Diffuse large B-cell lymphoma, not otherwise specified, remains the most common subtype of lymphomas in the oral and oropharyngeal region. Older patients are the most affected, with no gender predilection and the palate and jaw are usually affected.
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Affiliation(s)
- José Alcides Almeida de Arruda
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lauren Frenzel Schuch
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | - Nicolau Conte Neto
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lucas Lacerda de Souza
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | | | - Lucas Guimarães Abreu
- Department of Child's and Adolescent's Oral Health, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Michelle Agostini
- Department of Oral Diagnosis and Pathology, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Mário José Romañach
- Department of Oral Diagnosis and Pathology, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Virgilio Gonzales Zanella
- Department of Head and Neck Surgery, Hospital Santa Rita, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brazil
| | - Marinez Bizarro Barra
- Service of Pathology, Hospital Santa Rita, Santa Casa de Misericórdia, Porto Alegre, Brazil
| | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.,Department of Oral Medicine, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Giovanna Ribeiro Souto
- Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil
| | - Adriana Etges
- Diagnostic Centre for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Hélder Antônio Rebelo Pontes
- Service of Oral Pathology, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | | | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | - Oslei Paes de Almeida
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | - Alan Roger Santos-Silva
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | - Marcio Ajudarte Lopes
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | - Fábio Ramôa Pires
- Department of Oral Pathology, School of Dentistry, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo Santiago Gomez
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Felipe Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo Alves Mesquita
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Carrillo-Cotto R, Etges A, Jardim PS, Torre E, Kaizer MR, Ferrúa CP, Nedel F, Cuevas-Suárez CE, Moraes RR. Cytotoxicity of contemporary resin-based dental materials in contact with dentin. Eur J Oral Sci 2020; 128:436-443. [PMID: 32741041 DOI: 10.1111/eos.12723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2020] [Indexed: 01/09/2023]
Abstract
In this study, the cytotoxicity of different combinations of contemporary resin-based restoratives (adhesives, composites, luting agents) against human keratinocytes (HaCaT) was evaluated under two conditions, whether materials were applied to dentin or not. Adhesives (3-step etch-and-rinse/3ER: OptiBond FL; 2-step self-etch/2SE Clearfil SE Bond; Single Bond Universal/UNI), composites (conventional composite resin/CCR: Filtek Z350XT; flowable/FCR: Filtek Z350XT Flow; self-adhesive composite resin/SACR: Dyad Flow), and luting agents (conventional luting agent/CLA: Variolink-II; self-adhesive luting agent/SLA: RelyXU200) were combined according to their clinical use. Eluates from polymerized specimens applied to dentin were placed in contact with cells grown for 1 and 7 d. The controls were defined by cells without material contact. Cell viability was determined using MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide)] assay. C=C conversion was investigated using Fourier-transform infrared spectroscopy. After 1 d of incubation, when dentin was not present, 2SE yielded the highest cell viability, whereas 3ER, UNI, and SACR showed higher cell viability in the presence of dentin. After 7 d, when dentin was absent, 2SE and CLA achieved significantly higher cell viability. The presence of dentin resulted in a drastically higher cell viability for all materials, except 2SE and CLA. UNI had the lowest C=C conversion. The presence of dentin was a significant factor, which resulted in higher cell viability than what was seen for the material specimens per se. All materials resulted in a lower viability of HaCaT than what was seen under the no-material control conditions, with effects mainly limited to the first 24 h.
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Affiliation(s)
- Ricardo Carrillo-Cotto
- Department of Restorative Dentistry and Dental Biomaterials, School of Dentistry, University of San Carlos of Guatemala, Guatemala city, Guatemala.,Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Adriana Etges
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | | | - Eliana Torre
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Marina R Kaizer
- Graduate Program in Dentistry, Positivo University, Curitiba, Brazil
| | - Camila P Ferrúa
- Graduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | - Fernanda Nedel
- Graduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | | | - Rafael R Moraes
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
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7
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Gomes APN, Schuch LF, Tarquinio SBC, Etges A, Vasconcelos ACU. Reduced demand for oral diagnosis during COVID-19: A Brazilian center experience. Oral Dis 2020; 28 Suppl 1:958-959. [PMID: 32654221 PMCID: PMC7404340 DOI: 10.1111/odi.13547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Ana Paula Neutzling Gomes
- Department of Semiology and Clinics, Diagnostic Center for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Lauren Frenzel Schuch
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade de Campinas, Piracicaba, Brazil
| | - Sandra Beatriz Chaves Tarquinio
- Department of Semiology and Clinics, Diagnostic Center for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Adriana Etges
- Department of Semiology and Clinics, Diagnostic Center for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Ana Carolina Uchoa Vasconcelos
- Department of Semiology and Clinics, Diagnostic Center for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, Brazil
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Reinhardt LC, Nascente PS, Ribeiro JS, Guimarães VBS, Etges A, Lund RG. Sensitivity to antifungals by Candida spp samples isolated from cases of chronic atrophic candidiasis (CAC). BRAZ J BIOL 2020; 80:266-272. [PMID: 31291399 DOI: 10.1590/1519-6984.190454] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 09/10/2018] [Indexed: 01/23/2023] Open
Abstract
The treatment of choice for chronic atrophic candidiasis (CAC), also known as denture stomatitis, is topical antifungal therapy. This study aimed to isolate, identify, and assess the antifungal susceptibility of Candida species from mucosal sites in denture wearers with a diagnosis of CAC and determine the prevalence of associated variables. The sample consisted of 44 patients wearing complete or partial dentures who had a clinical diagnosis of CAC. Using sterile cotton swabs, specimens were collected from the oral mucosa of all patients and grown at 30ºC for 48 h in CHROMagar Candida, as a means of isolating and screening the species. The complementary identification of the species was performed using the VITEK 2 automated system (BioMérieux), as well as the determination of their susceptibility to antifungal agents. Data were analyzed using the chi-square test. STATA 13.1 was used for statistical analysis (α = 5%). Of 44 patients with CAC, 33 (75%) had lesions classified as Newton type II. Yeasts were isolated in 38 cases. The most prevalent species was Candida albicans. None of the isolates were resistant to the antifungals tested. Our findings suggest that current indications for antifungal agents are appropriate. Also, antifungal susceptibility testing and proper fungal identification can help dentists to determine the optimal course of treatment for CAC.
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Affiliation(s)
- L C Reinhardt
- Programa de Pós-graduação em Odontologia - PPGO, Laboratório de Microbiologia Oral, Faculdade de Odontologia, Universidade Federal de Pelotas - UFPel, Rua Gonçalves Chaves, 457, Sala 702/3, CEP , Pelotas, RS, Brasil
| | - P S Nascente
- Programa de Pós-graduação em Bioquímica e Bioprospecção - PPGBBio, Departamento de Microbiologia e Parasitologia, Laboratório de Micologia, Universidade Federal de Pelotas - UFPel, Campus Universitário Capão do Leão, s/n, , Capão do Leão, RS, Brasil
| | - J S Ribeiro
- Programa de Pós-graduação em Odontologia - PPGO, Laboratório de Microbiologia Oral, Faculdade de Odontologia, Universidade Federal de Pelotas - UFPel, Rua Gonçalves Chaves, 457, Sala 702/3, CEP , Pelotas, RS, Brasil
| | - V B S Guimarães
- Programa de Pós-graduação em Odontologia - PPGO, Laboratório de Microbiologia Oral, Faculdade de Odontologia, Universidade Federal de Pelotas - UFPel, Rua Gonçalves Chaves, 457, Sala 702/3, CEP , Pelotas, RS, Brasil
| | - A Etges
- Centro de Diagnóstico e Doenças da Boca - CDDB, Faculdade de Odontologia, Universidade Federal de Pelotas - UFPel, Rua Gonçalves Chaves, 457, Sala 607, CEP , Pelotas, RS, Brasil
| | - R G Lund
- Programa de Pós-graduação em Odontologia - PPGO, Laboratório de Microbiologia Oral, Faculdade de Odontologia, Universidade Federal de Pelotas - UFPel, Rua Gonçalves Chaves, 457, Sala 702/3, CEP , Pelotas, RS, Brasil.,Programa de Pós-graduação em Bioquímica e Bioprospecção - PPGBBio, Departamento de Microbiologia e Parasitologia, Laboratório de Micologia, Universidade Federal de Pelotas - UFPel, Campus Universitário Capão do Leão, s/n, , Capão do Leão, RS, Brasil
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9
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Pacheco VN, Langie R, Benfica JRD, Munaretto JC, Etges A, Ponzoni D, Puricelli E. Nitrogen-containing bisphosphonate therapy-Part II: Assessment of alveolar bone tissue inflammatory response in rats-A blind randomized controlled trial. Int J Exp Pathol 2018; 99:258-263. [PMID: 30457199 DOI: 10.1111/iep.12291] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 08/13/2015] [Revised: 02/22/2018] [Accepted: 08/13/2018] [Indexed: 11/30/2022] Open
Abstract
This study aimed to evaluate the alveolar bone tissue inflammatory response in rats undergoing zoledronic acid therapy. The study sample was composed of 28 Wistar rats. Animals from the test group GTa received a weekly intraperitoneal dose of 0.2 mg/kg of zoledronic acid for 3 weeks, while test group GTb received the same dose for 8 weeks. A physiological saline dose, equivalent to that of the medication, was administered to the controls in groups GCa and GCb. A defect was created in the dental crown of the lower first molars using a drill to simulate pulp and periapical injury. Data were evaluated regarding image grey levels by cone-beam computed tomography and histologically by assigning scores for the presence of inflammatory infiltrate, type of infiltrate, vascularization, bone necrosis and dental resorption. Grey levels in the 3-week therapy group (GTa) showed more pronounced changes in comparison with those seen in the GCa group (P < 0.05). Evaluation of the scores demonstrated no association between any of the variables amongst the groups (>0.05). However, bone remodelling decreased in the groups receiving the medication. Bone necrosis was present more frequently in group GTb than in the control group GCb. The results suggest that the drug interfered in the reaction capacity of the alveolar bone tissue as test group GTa showed higher grey levels in comparison to the control group GCa. In addition, there was less bone remodelling activity, with the appearance of bone necrosis zones and intense acute inflammatory infiltrate associated with the 8-week therapy group GTb.
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Affiliation(s)
- Viviane N Pacheco
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Renan Langie
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Jules R D Benfica
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Jéssica C Munaretto
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Adriana Etges
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Deise Ponzoni
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Edela Puricelli
- Oral and Maxillofacial Surgery Unit/Clinical Hospital of Porto Alegre (HCPA), School of Dentistry/Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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10
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Schuch LF, da Silva KD, de Arruda JAA, Etges A, Gomes APN, Mesquita RA, Vasconcelos ACU, Tarquinio SBC. Forty cases of acquired oral syphilis and a review of the literature. Int J Oral Maxillofac Surg 2018; 48:635-643. [PMID: 30459066 DOI: 10.1016/j.ijom.2018.10.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 05/27/2018] [Revised: 09/20/2018] [Accepted: 10/31/2018] [Indexed: 12/31/2022]
Abstract
The aim of this study was to describe 40 cases of acquired oral syphilis (AOS) and to discuss the distribution of demographic characteristics, clinical features, and differential diagnosis of the disease. A retrospective study was conducted covering a 17-year period at a single institution in southern Brazil. Moreover, a literature review was performed through a search of the PubMed database for articles on AOS published between 1955 and March 2018. Data were analyzed descriptively. The predominant group within the case series was male patients in their twenties. The vast majority of cases (92.5%) were in the secondary stage of the disease. The lips were the most commonly affected site, with greyish-white mucous patches and reddish ulcers. In the literature review, the largest number of reported cases came from North America. Male patients in the third and fourth decades of life were most affected. AOS occurred more commonly as mucous patches and ulcers on the tongue and palate. Similarities regarding the distribution by sex, age, and anatomical location were found in the present study when compared to cases reported elsewhere. Clinicians, oral pathologists, and maxillofacial surgeons should familiarize themselves with the variable spectrum of signs and symptoms of AOS in their clinical practice to improve diagnosis and management.
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Affiliation(s)
- L F Schuch
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - K D da Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - J A A de Arruda
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - A Etges
- Diagnostic Centre for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - A P N Gomes
- Diagnostic Centre for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - R A Mesquita
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - A C U Vasconcelos
- Diagnostic Centre for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - S B C Tarquinio
- Diagnostic Centre for Oral Diseases, School of Dentistry, Universidade Federal de Pelotas, Pelotas, RS, Brazil
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Reinhardt LC, Nascente PDS, Ribeiro JS, Etges A, Lund RG. A single-center 18-year experience with oral candidiasis in Brazil: a retrospective study of 1,534 cases. Braz Oral Res 2018; 32:e92. [PMID: 30231172 DOI: 10.1590/1807-3107bor-2018.vol32.0092] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 07/25/2018] [Indexed: 11/22/2022] Open
Abstract
Despite the large number of published studies about oral candidiasis and associated risk factors, reports of large single-center retrospective studies on the prevalence of oral candidiasis, risk factors, and the oral candidiasis types diagnosed more frequently in oral diagnostic reference centers are scarce. The objective of the present study was to retrospectively survey the demographic and clinical profiles of 1,534 patients diagnosed with candidiasis and treated at the Center for Diagnosis of Oral Diseases (CDOD), Pelotas Dental School, Federal University of Pelotas between 1997 and 2014. Using a retrospective, cross-sectional, epidemiological design, data on race, gender, age, systemic diseases, oral candidiasis type and location, symptoms, and harmful habits such as smoking and alcohol consumption were collected. The statistical analysis was performed using STATA version 13.1. Risk factors for chronic atrophic candidiasis (CAC) were evaluated using Poisson regression with robust variance (p ≤ 0.05). The majority of patients with oral candidiasis seen at the CDOD over the 18-year period of analysis were Caucasian women, aged 51-60 years, nonsmokers, and nondrinkers, with no systemic disease, and who wore some form of dental prostheses. CAC was the single most common clinical type of candidiasis detected, and the most frequently affected oral site was the palate. These data from a large single-center in Brazil agree with previous evidence about the clinical and demographic profiles of patients with oral candidiasis.
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Affiliation(s)
- Leandro Calcagno Reinhardt
- Post-Graduate Program in Dentistry, School of Dentistry, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brazil
| | - Patricia da Silva Nascente
- Department of Microbiology and Parasitology, Institute of Biology, Universidade Federal de Pelotas - UFPel, Capão do Leão, RS, Brazil
| | - Juliana Silva Ribeiro
- Post-Graduate Program in Dentistry, School of Dentistry, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brazil
| | - Adriana Etges
- Post-Graduate Program in Dentistry, School of Dentistry, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brazil
| | - Rafael Guerra Lund
- Post-Graduate Program in Dentistry, School of Dentistry, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brazil
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12
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Alves AM, Correa MB, Silva KDD, Araújo LMAD, Vasconcelos ACU, Gomes APN, Etges A, Tarquinio SBC. Demographic and Clinical Profile of Oral Squamous Cell Carcinoma from a Service-Based Population. Braz Dent J 2018; 28:301-306. [PMID: 29297550 DOI: 10.1590/0103-6440201601257] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 03/14/2017] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to evaluate the demographic and clinical profile of the oral squamous cells carcinoma (OSCC) cases registered in a center of oral diagnosis in southern Brazil. Eight hundred and six individuals with OSCC from 1959 to 2012 were included in this study. The variables recorded were: sex, age, occupation according to workplace, alcohol and tobacco consumption, skin color, tumor location, histological type, clinical appearance, size, evolution time, presence of pain and lymph node metastasis. Descriptive analysis was performed and the associations between variables were assessed using the chi-square and Fisher's exact test, with a confidence level of 5%. OSSC was more common in males (76.6%) aged between 51 to 70 years (53.9%). The most frequent sites were lower lip vermilion (23.3%), tongue (20.2%) and gingiva/alveolar ridge (18.1%). There was a strong association between outdoor occupation and white skin color with lip squamous cell carcinoma (LSCC). OSCC intraoral lesions were commonly more painful, larger than 2 cm and presented lymphatic metastasis. In conclusion, most of the results confirm the data from literature about sex, age, tumor location and occupation. Moreover, the positive correlations between LSCC and occupation, between LSCC and white skin color, and between bigger lesions and presence of pain/cervical metastasis also corroborate the literature data.
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Affiliation(s)
- Alessandro Menna Alves
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Center of Diagnosis of Oral Diseases, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Dental School, UNIVATES - Unidade Integrada Vale do Taquari de Ensino Superior, Lajeado, RS, Brazil
| | - Marcos Britto Correa
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Karine Duarte da Silva
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Center of Diagnosis of Oral Diseases, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | | | - Ana Carolina Uchoa Vasconcelos
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Center of Diagnosis of Oral Diseases, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Ana Paula Neutzling Gomes
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Center of Diagnosis of Oral Diseases, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Adriana Etges
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Center of Diagnosis of Oral Diseases, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Sandra Beatriz Chaves Tarquinio
- Graduate Program in Dentistry, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.,Center of Diagnosis of Oral Diseases, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil
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13
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Da Silva KD, Aitken Saavedra JP, De Freitas Gomes E, Etges A, Uchoa Vasconcelos AC, Neutzling AP, Chaves Tarquinio SB. Spindle Cell Carcinoma: New Primary Tumor after Radiotherapy. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.460] [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: 11/16/2022]
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14
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Aitken-Saavedra J, da Silva KD, Gomes APN, Vasconcelos ACU, Etges A, Nóbrega TG, Tarquinio SBC. Clinicopathologic and immunohistochemical characterization of 14 cases of angioleiomyomas in oral cavity. Med Oral Patol Oral Cir Bucal 2018; 23:e564-e568. [PMID: 30148476 PMCID: PMC6167101 DOI: 10.4317/medoral.22649] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 07/05/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Angioleiomyoma (ALM) is a benign neoplasm that originates from vascular smooth muscle. It is extremely rare in oral cavity. The objective of this study was to evaluate the clinicopathological and immunohistochemical characteristics of all oral angioleiomyomas registered in a Center of Diagnosis of Oral Diseases from 1959 to 2017. MATERIAL AND METHODS Slides from 14 cases of ALM stained with hematoxylin and eosin (H&E) were analyzed to confirm the diagnosis. Moreover, an immunohistochemical panel with alpha-smooth muscle actin (alpha-SMA), desmin, AE1/AE3, CD68, S-100, and CD34 antibodies was performed to evaluate semi-quantitatively the positive cells. RESULTS ALM correspond to 0.08% of all benign oral tumors analyzed during the 57-year period. The mean age of the patients was 45 years with a predilection to males (58%). The most frequently reported site was lips (50%). Microscopic analysis on H&E sections revealed similar pattern in all cases, showing well-circumscribed and encapsulated tumors, characterized by a proliferation of smooth muscle cells and wide vascular spaces of varying sizes. The predominant immuno profiles were: alpha-smooth muscle actin (alpha-SMA) positive (strong immunoreactivity); positive variable pattern for desmin, negative immunoprofile for AE1/AE3, CD68, and S-100. The endothelial cells of vascular spaces were CD34+. CONCLUSIONS Based on the results, the alpha-SM actin can be elected as a good marker for angioleiomyomas and can help the confirmation of the morphologic diagnosis of this lesion.
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Kato CDNADO, Nunes LFM, Chalub LLFH, Etges A, Silva TA, Mesquita RA. Retrospective Study of 383 Cases of Fibro-Osseous Lesions of the Jaws. J Oral Maxillofac Surg 2018; 76:2348-2359. [PMID: 29859157 DOI: 10.1016/j.joms.2018.04.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 04/26/2018] [Accepted: 04/28/2018] [Indexed: 12/19/2022]
Abstract
PURPOSE The aims of this study were to describe the clinical and radiologic features of 383 fibro-osseous lesions (FOLs) from an oral pathology reference service in Brazil and to compare the findings with previous studies. The hypothesis of the study was that the most common type of FOL would differ from other investigations. MATERIALS AND METHODS We conducted a descriptive and retrospective study with review of the records of the clinical and biopsy services (1990 to 2015). All records of the patients included showed a definitive diagnosis of FOL. The primary outcome variable was the type of FOL, and the predictor variables were gender, age, ethnicity, location, and clinical and radiologic characteristics. Descriptive analyses and χ2 tests were performed. The P value was set at .05. RESULTS From the 27,998 records available, 383 showed FOLs, with 187 (48.8%) being cemento-osseous dysplasias (CODs), 103 (26.9%) being fibrous dysplasias (FDs), and 93 (24.3%) being ossifying fibromas (OFs). The mean age of the patients was 38.5 ± 17.5 years. CODs presented a predilection for female gender (n = 314, 82.0%), African descent (n = 134, 71.6%), and the mandible (n = 248, 64.6%). The most common radiologic feature was a mixed radiolucent-radiopaque image (n = 149, 51.7%). FDs and OFs were commonly diagnosed during the first and second decades of life (P < .001), whereas CODs were more frequently diagnosed beyond the third decade (P < .001). Secondary osteomyelitis was more significantly observed in CODs (P < .001) than in FDs and OFs. Swelling was more frequently reported for FDs and OFs than for CODs (P < .001). CONCLUSIONS CODs were the most frequently observed FOLs in this Brazilian population. Female patients, patients of African descent, and patients with mandibular localization were most commonly affected by these conditions. The most common type of FOL differed from that in similar case reports or series from various geographic locations. It is believed that the data source (clinical and/or biopsy services) can directly influence the outcome.
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Affiliation(s)
| | | | - Loliza Luiz Figueiredo Houri Chalub
- Professor, Department of Community and Preventive Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Adriana Etges
- Professor, Departament Oral Pathology, School of Dentistry, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Tarcília Aparecida Silva
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo Alves Mesquita
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Silva K, Alves A, Correa M, Etges A, Vasconcelos AC, Gomes AP, Tarquinio S. Retrospective analysis of jaw biopsies in young adults. A study of 1599 cases in Southern Brazil. Med Oral Patol Oral Cir Bucal 2017; 22:e702-e707. [PMID: 29053654 PMCID: PMC5813988 DOI: 10.4317/medoral.21918] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 09/17/2017] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND To evaluate the prevalence and the characteristics of jaw lesions diagnosed in young adults aged 20 to 30 years in a southern Brazil reference center, over a period of 25 years. And to analyze the concordance between clinical and histological diagnosis. MATERIAL AND METHODS In this cross-sectional retrospective study, the biopsies files from this center were retrieved and data regarding sex, age, bone localization, clinical and histological diagnosis were collected. The histological diagnosis were grouped into the categories Cystic lesions of odontogenic origin, Periapical inflammation, Odontogenic tumors, Bone diseases, Health tissue and Nonspecific diagnostic. Absolute and relative frequencies were estimated with descriptive analysis. The agreement between clinical and histological diagnosis was measured through Kappa statistic. RESULTS A total of 18,181 histopathological analysis were performed during the period of the study, registering 1,599 jaw lesions in young adults. The average age of individuals was 24,59 years (SD 3,1). Nine hundred ninety-one (62%) lesions were found in females and 608 (38%) in males. More than half of pathologies were cystic lesions of odontogenic origin (822/51.4%), followed by periapical inflammation (282/17.6%). Regarding the site of lesions, more than half occurred in posterior mandible (877/54.8%), followed by posterior maxilla (339/21.2%). The most frequent entities were periapical cyst, chronic periapical granuloma, dental follicle and paradental cyst, corresponding to a total of 1,202 (75.2%) evaluated cases. In relation to the analysis of concordance between clinical and histological diagnosis the general Kappa index was 0.5, which is considered moderate. Finally, the findings confirm data from literature about the most frequent jaw pathologies in young adults and serve as aid for preventive measures of some entities. Additionally, they can improve the formulation of differential diagnosis and the patient management.
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Affiliation(s)
- K Silva
- Federal University of Pelotas, School of Dentistry, Gonçalves Chaves Street, 457, room 607, ZIP Code 96015-560, Pelotas, RS, Brazil,
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17
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da Silva KD, Flores IL, Etges A, Vasconcelos ACU, Mesquita RA, Gomes APN, Tarquinio SBC. Unusual osteolytic lesion of the jaw. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 124:443-448. [PMID: 28843477 DOI: 10.1016/j.oooo.2017.06.123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/24/2017] [Accepted: 06/30/2017] [Indexed: 10/19/2022]
Affiliation(s)
- Karine Duarte da Silva
- Oral Diagnosis Area, Semiology and Clinics Department, Federal University of Pelotas, UFPel, Rio Grande do Sul, Brazil
| | - Isadora Luana Flores
- Oral Pathology Area, Dentistry Department, Federal University of Juiz de Fora Campus Governador Valadares, UFJF/GV, Minas Gerais, Brazil
| | - Adriana Etges
- Oral Diagnosis Area, Semiology and Clinics Department, Federal University of Pelotas, UFPel, Rio Grande do Sul, Brazil
| | | | - Ricardo Alves Mesquita
- Oral Pathology Area, Oral Pathology and Surgery Department, Federal University of Minas Gerais, UFMG, Minas Gerais, Brazil
| | - Ana Paula Neutzling Gomes
- Oral Diagnosis Area, Semiology and Clinics Department, Federal University of Pelotas, UFPel, Rio Grande do Sul, Brazil
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Silveira FM, Etges A, Correa MB, Vasconcelos ACU. Microscopic Evaluation of the Effect of Oral Microbiota on the Development of Bisphosphonate-Related Osteonecrosis of the Jaws in Rats. J Oral Maxillofac Res 2016; 7:e3. [PMID: 28154747 PMCID: PMC5279769 DOI: 10.5037/jomr.2016.7403] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 12/05/2016] [Indexed: 01/18/2023]
Abstract
Objectives Osteonecrosis of the jaws is a side effect associated with the use of bisphosphonates. Using histologic analysis, this study aimed to evaluate the influence of microbial colonies in the development of osteonecrosis in the jaws of rats subjected to nitrogenous and non-nitrogenous bisphosphonates, undergoing surgical procedures. Material and Methods Thirty-four rats (Rattus norvegicus, Wistar strain) were allocated randomly into three groups: 12 animals treated with zoledronic acid; 12 animals treated with clodronate; and 10 animals treated with saline. Sixty days after the start of treatment, the animals underwent three extractions of the upper right molars. After 120 days of drug administration, the rats were killed. Histologic analysis was performed on specimens stained with hematoxylin and eosin by the technique of manual counting points using Image-Pro Plus software on images of the right hemimaxilla. Results Osteonecrosis was induced in the test groups. There was no statistically significant association between the presence of microbial colonies and the presence of non-vital bone (Kruskal-Wallis, P > 0.05). Conclusions Use of zoledronic acid was associated with non-vital bone and the results suggested that the presence of microbial colonies does not lead to osteonecrosis.
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Affiliation(s)
- Felipe M Silveira
- Dental College, Federal University of Pelotas - UFPel, Rio Grande do Sul, Porto Alegre Brazil
| | - Adriana Etges
- Dental College, Federal University of Pelotas - UFPel, Rio Grande do Sul, Porto Alegre Brazil
| | - Marcos B Correa
- Dental College, Federal University of Pelotas - UFPel, Rio Grande do Sul, Porto Alegre Brazil
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Flores IL, Gamba TDO, Carvalho RVD, Lund RG, Etges A. In Vitro Cytotoxicity of Plantago australis Ethanol Extract Used as an Anti-Inflammatory for the Treatment of Oral Pathologies. ACTA ACUST UNITED AC 2016. [DOI: 10.17795/jjhr-28515] [Citation(s) in RCA: 4] [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: 11/25/2022]
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Flores IL, Torriani MA, Damé JAM, Tarquinio SBC, Vasconcelos ACU, Gomes APN, Etges A. Asymptomatic gingival nodule in the anterior maxilla. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 121:115-8. [PMID: 26422589 DOI: 10.1016/j.oooo.2015.07.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 07/20/2015] [Accepted: 07/31/2015] [Indexed: 10/23/2022]
Affiliation(s)
- Isadora Luana Flores
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil.
| | - Marcos Antônio Torriani
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil
| | - José Antônio Mesquita Damé
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil
| | - Sandra Beatriz Chaves Tarquinio
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil
| | - Ana Carolina Uchoa Vasconcelos
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil
| | - Ana Paula Neutzling Gomes
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil
| | - Adriana Etges
- Department of Semiology and Clinics, Postgraduate Program in Dentistry, Dental School, Federal University of Pelotas, Brazil
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Vogt BF, Bergoli RD, De Souza CECP, Weigert NM, Nobre SMW, Etges A, Silva DN. The effect of propolis solution on root surface treatment in replanted teeth. BDS 2015. [DOI: 10.14295/bds.2015.v18i3.1147] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective: The objective of this study was to assess the effect of propolis solution on root surface treatment in cases of delayed tooth replantation following chemical or mechanical removal of the periodontal ligament. Material and methods: Maxillary right central incisors of 36 male rats (Wistar) were extracted, kept in a dry environment for 15 minutes and then distributed into six groups, as follows: mechanical-propolis and mechanical-fluoride (mechanical removal followed by immersion in 6% propolis and 2% sodium fluoride, respectively), mechanical (mechanical removal only), chemical-propolis and chemical-fluoride (chemical removal followed byimmersion in 6% propolis and 2% sodium fluoride, respectively), and chemical (chemical removal only). Following periodontal ligament removal, root canals were filled with calcium hydroxide paste and replanted. After 60 days, histological analysis with light microscopy was carried out to detect areas of dentoalveolar ankylosis and root resorption. Results: Results revealed that chemical removal of the periodontal ligament was associated with slightly better tissue repair findings when compared with mechanical removal. Conclusions: The use of 6% propolis solution encouraged tissue repair, while the 2% sodium fluoride solution combined with chemical removal resulted in a better-organized healing process, with less destruction of dentine when compared with the 6% propolis solution.
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Cignachi NP, Pesquero JB, Oliveira RB, Etges A, Campos MM. Kinin B1Receptor Deletion Affects Bone Healing in Type 1 Diabetic Mice. J Cell Physiol 2015; 230:3019-28. [DOI: 10.1002/jcp.25034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 05/05/2015] [Indexed: 01/06/2023]
Affiliation(s)
- Natália P. Cignachi
- School of Dentistry; Pontifical Catholic University of Rio Grande do Sul; Avenida Ipiranga; 6681; Partenon; Porto Alegre RS Brazil
| | - João B. Pesquero
- Department of Biophysics; Federal University of São Paulo; Rua Pedro de Toledo, 669; São Paulo SP Brazil
| | - Rogério B. Oliveira
- School of Dentistry; Pontifical Catholic University of Rio Grande do Sul; Avenida Ipiranga; 6681; Partenon; Porto Alegre RS Brazil
| | - Adriana Etges
- Department of Oral Pathology; School of Dentistry; Universidade Federal de Pelotas (UFPel); Rua, Gonçalves Chaves, 457; Pelotas RS Brazil
| | - Maria M. Campos
- School of Dentistry; Pontifical Catholic University of Rio Grande do Sul; Avenida Ipiranga; 6681; Partenon; Porto Alegre RS Brazil
- Institute of Toxicology and Pharmacology; Pontifical Catholic University of Rio Grande do Sul; Avenida Ipiranga, 6681; Partenon; Porto Alegre RS Brazil
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Leite FRM, Nascimento GG, Demarco FF, Waechter J, Etges A. Use of Fusidic Acid for Desquamative Gingivitis Treatment: 1-Year Follow-Up. Braz Dent J 2015; 26:422-7. [DOI: 10.1590/0103-64402013x0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 05/22/2015] [Indexed: 11/22/2022] Open
Abstract
<p>This study evaluated retrospectively the effect of fusidic acid on the management of desquamative gingivitis (DG). The study population consisted of 15 patients with DG. Patients were requested to make topical application of 2% fusidic acid ointment 4 times a day for 6 weeks. Clinical assessments were recorded at baseline, at 6 weeks and 12 months after beginning the therapy. Patients' examination involved lesion size area, pain score and impact on daily activities. All patients presented lesions in maxilla; in 9 patients (60.0%) lesions were predominately at the anterior region and 6 (40.0%) at the posterior region of maxilla. Treatment significantly (p<0.05) reduced the pain intensity (from 5.4±1.12 to 1.16±0.97) and its periodicity (from 53.33% with pain>3 x/week to 13.33%), and the lesion size in 72.47% (±4.12) immediately after 6 weeks of treatment. Improvements were sustained for 12 months compared to baseline (p<0.001). It also reduced the impact of disease in daily activities (eating and oral hygiene performance), and improved the emotional condition of patients, who reported better social relationships and habits. Topical application of fusidic acid may be a possible alternative local palliative therapy for desquamative gingivitis treatment.</p>
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Pacheco VN, Langie R, Etges A, Ponzoni D, Puricelli E. Nitrogen-containing bisphosphonate therapy: assessment of the alveolar bone structure in rats - a blind randomized controlled trial. Int J Exp Pathol 2015; 96:255-60. [PMID: 26119047 DOI: 10.1111/iep.12133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 06/23/2014] [Accepted: 05/10/2015] [Indexed: 12/01/2022] Open
Abstract
This study aimed to assess the effect of zoledronic acid exposure on structures of the alveolar bone of rats. The sample was composed of 42 male Wistar rats. Animals in the T1 and T2 groups received weekly doses of 0.2 mg/kg intraperitoneal zoledronic acid for 3 weeks, while animals in the T3 group received the same treatment for 8 weeks. The control groups C1, C2 and C3 received equivalent doses of saline. The first upper molars of Wistar rats in the C2, T2, C3 and T3 groups were extracted. Cone-beam computerized tomography scans were performed, and the image density was analysed by grey levels. The presence and type of inflammatory infiltrate, vascularization and bone necrosis were assigned by histological qualitative scores. Histomorphometric analysis of bone density was performed in the groups without extraction. No significant differences were found in the bone grey density estimated by grey-level value and histomorphometric analysis between the C1 and T1 groups (P > 0.05). The grey levels in the T3 group were lower (P < 0.05) than in the C3 group, corresponding to the bone defect. Histological assessments showed the presence of bone necrosis in the T3 group and lower levels of bone remodelling in the test groups (T2 and T3) compared to the control groups (C2 and C3). The results of qualitative analyses did not differ significantly between the groups (P > 0.05). Zoledronic acid-exposed animals showed maxillary changes including reduced grey levels, the presence of bone necrosis and a higher prevalence of inflammatory signs.
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Affiliation(s)
- Viviane N Pacheco
- Animal Experimentation Unit, Experimental Pathology Unit, Clinical Hospital of Porto Alegre (HCPA), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Renan Langie
- Animal Experimentation Unit, Experimental Pathology Unit, Clinical Hospital of Porto Alegre (HCPA), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Adriana Etges
- Animal Experimentation Unit, Experimental Pathology Unit, Clinical Hospital of Porto Alegre (HCPA), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Deise Ponzoni
- Animal Experimentation Unit, Experimental Pathology Unit, Clinical Hospital of Porto Alegre (HCPA), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Edela Puricelli
- Animal Experimentation Unit, Experimental Pathology Unit, Clinical Hospital of Porto Alegre (HCPA), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Uchoa Vasconcelos AC, Gomes AP, Etges A, Torriani MA, Fernades Filho RB. Juvenile Ossyfing Fibroma: A Case Report with 6 Years of Follow-Up. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2014.07.490] [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: 11/16/2022]
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Uchoa-Vasconcelos AC, Filizola-de Oliveira DJ, Roman-Martelli SJ, Etges A, Neutzling-Gomes AP, Chaves-Tarquínio SB. Demographic profile of oral nonodontogenic cysts in a Brazilian population. Med Oral Patol Oral Cir Bucal 2014; 19:e308-12. [PMID: 24316702 PMCID: PMC4119303 DOI: 10.4317/medoral.19335] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 10/24/2013] [Indexed: 11/28/2022] Open
Abstract
Objectives: The purpose of this study was to determine the clinical and demographic characteristics of oral non-odontogenic cysts (ONOC) in a Brazilian population over a 53-year period and to compare this data with the literature.
Study Design: A total of 20.391 biopsies records were evaluated, from April/1959 to August/2012. Cases of oral developmental cysts were selected. Data regarding age, gender, time of evolution, and anatomic site of all cases were collected. The data were analyzed by descriptive statistics.
Results: Among 20.391 oral biopsies, 71 (0.35%) met the criteria of ONOC. Females accounted for 50.70% of all cases. The mean age observed was 38.14 years (range: 5-88 years). Nasopalatine duct cysts, oral lymphoepithelial cysts and epidermoid cysts were the most common ONOC, accounting for 63 cases (88.73%). Nasopalatine duct cysts occurred in 31 cases (43.66%), followed by 22 patients with oral lymphoepithelial cysts (30.99%) and 10 cases of epidermoid cysts (14.08%). Nasopalatine duct cysts revealed predominance among males (58.06). Oral lymphoepithelial cysts were more commonly observed in tongue (50%). Epidermoid cysts were most frequently found in the buccal mucosa (40.00%).
Conclusions: The differential diagnosis of ONOC is based on the clinical, radiological, and histological findings. It is difficult to establish an epidemiological profile of ONOCs, considering the low frequency of these lesions and the divergences in the demographic and clinical presentation data among different populations.
Key words:Diagnosis, epidemiology, jaw cysts, mouth.
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Affiliation(s)
- Ana-Carolina Uchoa-Vasconcelos
- Centro de Diagnóstico das Doenças da Boca CDDB, Faculdade de Odontologia, Universidade Federal de Pelotas UFPEL, Rua Gonçalves Chaves, 457, sala 608, Pelotas, RS, Brazil, CEP 96015-560,
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Silveira V, Cenci R, Oliveira M, Moraes J, Etges A, Zerbinatti L. Histological assessment of non-ablative laser stimulation of tissue repair in acellular dermal grafts. Minerva Stomatol 2014; 63:77-83. [PMID: 24632799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The objective of this study was to compare integration of AlloDerm® acellular dermal grafts in animals subjected to non-ablative laser irradiation and animals not exposed to this therapy. METHODS Standardized AlloDerm® fragments measuring 5 mm² were grafted into the subcutaneous tissue overlying the calvaria in 32 Wistar rats. Laser therapy (685 ηm), at a dose of 4 J/cm2 per session, was applied immediately after surgical intervention and every 48 hours thereafter for a total of four applications. RESULTS Analysis of histology slides revealed significantly greater edema in the control group. There was no neutrophil infiltration in the laser-irradiated group at any point during the study period, whereas such infiltration was present in control animals at three of the four points of observation. In the laser therapy group, lymphocyte infiltration was observed from day 1, whereas in the control group, it was only apparent from day 3. Vascularization was substantially greater in the control group. In the experimental group, the AlloDerm® graft was completely replaced by fibrous tissue. CONCLUSION These findings suggest that add-on non-ablative laser therapy is an effective stimulator of healing and graft integration after placement of AlloDerm® acellular dermal grafts.
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Affiliation(s)
- V Silveira
- Oral and maxillofacial Department Pontifícia Universidade do Rio Grande do Sul (PUCRS) Porto Alegre, RS, Brazil -
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Gomes GB, Sarkis-Onofre R, Bonow MLM, Etges A, Jacinto RC. An investigation of the presence of specific anaerobic species in necrotic primary teeth. Braz Oral Res 2013; 27:149-55. [PMID: 23538426 DOI: 10.1590/s1806-83242013000100020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 12/21/2012] [Indexed: 11/22/2022] Open
Abstract
Different microbial identification methods have shown that the microbial community profiles in endodontic infections are diverse and assorted. The aim of this study was to evaluate the frequency of selected endodontic pathogens in the pulp chambers (PCs) and root canals (RCs) of infected primary teeth using PCR methods. Paired PC and RC samples were collected from 15 subjects and analyzed by PCR for the presence of Filifactor alocis, Fusobacterium nucleatum, Parvimonas micra, Porphyromonas endodontalis, Porphyromonas gingivalis, Prevotella intermedia, Prevotella nigrescens, Prevotella tannerae, Tanerella forsythia, Treponema denticola, and Treponema socranskii. The frequency of each species was determined in the PC and RC of each case. The species most frequently detected in PCs were P. nigrescens (86.7%), P. gingivalis (73.3%), and F. alocis (73.3%). Of the PC samples, 13.3% contained P. micra and T. denticola, and 6.7% contained T. forsythia. The species most frequently detected in RCs were P. gingivalis (100%) and P. nigrescens (93.3%). P. tannerae, P. micra, and T. denticola were found in 40% of the RC samples; T. forsythia was found in 26.7% of the RC samples. The "red complex", which comprises P. gingivalis, T. denticola, and T. forsythia, was not found in the PC of any tooth but was found in 30% of the RC samples. The detection of P. nigrescens in the PC was statistically associated with the presence of P. nigrescens in the RC (p = 0.04). The results suggest high heterogeneity among the samples, even among those from the same subject.
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Affiliation(s)
- Genara Brum Gomes
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Univ Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brazil
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Baldissera EZ, Silva AFD, Gomes APN, Etges A, Botero T, Demarco FF, Tarquinio SBC. Tenascin and Fibronectin Expression after Pulp Capping with Different Hemostatic Agents: A Preliminary Study. Braz Dent J 2013; 24:188-93. [DOI: 10.1590/0103-6440201302168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 04/17/2013] [Indexed: 11/22/2022] Open
Abstract
This study investigated the expression of extracellular matrix glycoproteins tenascin (TN) and fibronectin (FN) in pulp repair after capping with calcium hydroxide (CH), following different hemostasis protocols. Class I cavities with a pulp exposure were prepared in 42 human third molars scheduled for extraction. Different hemostatic agents (0.9% saline solution, 5.25% sodium hypochlorite and 2% chlorhexidine digluconate) were used and pulps were capped with CH cement. After 7, 30 or 90 days, teeth were extracted, formalin-fixed, and prepared for immunohistochemical technique. Hemostatic agents did not influence the expression of TN and FN. Both glycoproteins were found in the entire the pulp tissue and around collagen fibers, but were absent in the mineralized tissues. In the predentin, TN showed positive immunostaining and FN had a variable expression. Within 7 days post-treatment, a slightly more pronounced immunostaining on the pulp exposure site was observed. Within 30 days, TN and FN demonstrated a positive expression around the dentin barrier and at 90 days, a thin and linear expression of TN and FN was delimitating the reparative dentin. In conclusion, hemostatic agents did not influence TN and FN expression. Immunostaining for TN and FN was seen in different regions and periods, demonstrating their role in pulp repair.
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Wolle CFB, Zollmann LA, Bairros PO, Etges A, Leite CE, Morrone FB, Campos MM. Outcome of periapical lesions in a rat model of type 2 diabetes: refractoriness to systemic antioxidant therapy. J Endod 2013; 39:643-7. [PMID: 23611383 DOI: 10.1016/j.joen.2012.12.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/13/2012] [Accepted: 12/30/2012] [Indexed: 02/06/2023]
Abstract
INTRODUCTION This study evaluated the development of periapical lesions in a rat model of type 2 diabetes and assessed the potential actions of the antioxidant agent tempol in this model. METHODS Male Wistar rats were used; they received tap water (N = 5) or a 20% glucose solution (N = 15) during a period of 9 weeks. At the sixth week, periapical lesions were induced on the first mandibular molars, and the animals were subdivided into 4 groups. The subgroup 1 was composed of nondiabetic rats orally receiving saline solution (10 mL/kg). Chronically glucose-fed rats were divided into the following subgroups: (2) saline-treated animals (10 mL/kg by oral route), and animals treated with tempol by gavage at doses of (3) 50 mg/kg or (4) 100 mg/kg. The body weight was monitored thoroughly. After 21 days of apical periodontitis induction, the animals were killed, and the mandibles were collected and submitted to radiographic and histologic analysis. The livers were collected to determine free radicals, and the blood plasma was used to measure insulin levels. RESULTS Type 2 diabetic rats displayed a significant decrease of body weight gain and a slight increase of insulin levels, which were allied to reduced levels of the antioxidant components catalase and reduced glutathione; these alterations were reversed by tempol. Concerning the periapical lesions, neither radiographic nor histologic analysis revealed any significant difference between control and type 2 diabetic rats. In diabetic rats, the apical periodontitis was refractory to tempol treatment. CONCLUSIONS The extent and cellularity of periapical lesions in glucose-fed type 2 diabetic rats were similar to those seen in control rats. Despite affecting other parameters related to diabetes, tempol failed to improve the outcome of endodontic lesions in type 2 diabetic animals.
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Affiliation(s)
- Carlos Frederico B Wolle
- Postgraduate Program of Dental College, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Partenon, Porto Alegre, Brazil
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Vargas-Ferreira F, Nedel F, Etges A, Gomes APN, Furuse C, Tarquinio SBC. Etiologic factors associated with oral squamous cell carcinoma in non-smokers and non-alcoholic drinkers: a brief approach. Braz Dent J 2012; 23:586-90. [DOI: 10.1590/s0103-64402012000500020] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 09/21/2012] [Indexed: 11/22/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is the fifth most common type of cancer in the world. The effect of some etiological factors is well established in the literature, such as consumption of tobacco and alcohol. However, approximately 15 to 20% of all oral cancer cases occur in patients without the traditional risk factors, reflecting in numerous cases of OSCC in non-smokers and non-alcoholic drinkers. Also, several studies have suggested a possible association between human papillomavirus and OSCC. Under these aspects, the purpose of this study is to address cases of oral cancer in non-smokers and non-drinkers focusing on the role of HPV, thus contributing to improve the diagnosis and monitoring of OSCC. A computer database search was performed using the Pubmed database. The search key words were: epidemiology, oral squamous cell carcinoma, risk factors and human papillomavirus. It is important to assess patients without the potential risk factors, since this knowledge may help identifying other features associated with the occurrence of oral cancer, enabling an appropriate clinical management and monitoring.
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Vannucci MG, Freddo AL, Duarte AAPDS, Moraes JFD, Etges A, De Oliveira MG. Avaliação do efeito biomodulatório local e à distância por laserterapia infravermelha e vermelha na cicatrização de feridas cutâneas em dorso de ratos. R Fac Odontol Porto Alegre 2012. [DOI: 10.22456/2177-0018.29444] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Objetivos: Este estudo tem por objetivo verificar se os lasers vermelho e infravermelho podem, ou não, interferir no processo cicatricial de ferimentos localizados no ponto de aplicação e a distância deste. Materiais e métodos: Foram realizados três ferimentos circulares em dorso de ratos, na região cranial, na região medial e na região caudal. Para este estudo experimental foram analisados 45 animais, divididos em três grupos, onde 15 animais não sofreram irradiações, em 15 animais foi aplicado laser infravermelho e em 15 animais foi aplicado laser vermelho. O período de observação foi de três, cinco e sete dias. Assim, cada grupo foi dividido em três subgrupos (A; B; C), de acordo com período de observação. Para os grupos II e III a dose de energia das irradiações foi de 8J/cm2, aplicados após o término da cirurgia e a cada 48 horas, totalizando, na dependência da época da morte do animal, duas, três ou quatro irradiações. Resultados: Houve maior presença de edema e processo inflamatório agudo nos primeiros dias avaliados e quantitativamente não houve diferença estatisticamente significante no percentual de redução das feridas intra e inter-grupos. Conclusões: A fototerapia por laser de baixa potência infravermelha apresentou um efeito biomodulatório positivo nos períodos iniciais de cicatrização e reparo em feridas no dorso de ratos. A fototerapia por laser de baixa potência vermelha apresentou, nos períodos iniciais analisados, maior processo inflamatório agudo, o que pode ser devido ao menor comprimento de onda que atinge as camadas mais superficiais da ferida.
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Brilhante Wolle CF, de Aguiar Zollmann L, Etges A, Vitalis GS, Leite CE, Campos MM. Effects of the antioxidant agent tempol on periapical lesions in rats with doxorubicin-induced cardiomyopathy. J Endod 2011; 38:191-5. [PMID: 22244634 DOI: 10.1016/j.joen.2011.11.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 11/11/2011] [Accepted: 11/17/2011] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Cardiovascular diseases have been associated with increased risk of endodontic complications. This study evaluated the effects of the antioxidant agent tempol on periapical lesions in rats with doxorubicin-induced cardiomyopathy in comparison with control animals. METHODS Forty male Wistar rats were divided into 4 groups: (1) naïve rats orally treated with saline solution (10 mL/kg, during 21 days after periapical lesion induction); (2) naïve rats treated with tempol (30 and 50 mg/kg, during 21 days after periapical lesion induction) by oral pathway; (3) rats with doxorubicin-induced cardiomyopathy treated with saline solution by oral route (10 mL/kg, from day 3 to day 10 after initiating treatment with doxorubicin); and (4) rats with doxorubicin-induced cardiomyopathy orally treated with tempol (30 and 50 mg/kg, from day 3 to day 10 after initiating treatment with doxorubicin). Periapical lesions were induced on the first right mandibular molar tooth. After 21 days of apical periodontitis induction, the animals were killed, and the mandibles were collected for radiographic and histologic analysis. RESULTS The oral administration of tempol (50 mg/kg) was able to significantly prevent the establishment of periapical lesions in either control animals or rats submitted to the model of doxorubicin-induced cardiomyopathy, according to radiographic and histologic evaluation. Nevertheless, the protective effects of tempol were virtually greater in control animals in comparison with doxorubicin-treated rats, as indicated by histologic inflammatory assessment, which might be related to the increased production of free radicals under cardiomyopathy. CONCLUSIONS We provide novel evidence on the beneficial systemic effects of the antioxidant tempol on apical periodontitis in both control animals and rats with doxorubicin-elicited cardiomyopathy.
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Bergoli RD, Chagas Junior OL, de Souza CECP, Vogt BF, de Oliveira HTR, Etges A, Silva DN. Isotretinoin effect on alveolar repair after exodontia--a study in rats. Oral Maxillofac Surg 2011; 15:85-92. [PMID: 20658349 DOI: 10.1007/s10006-010-0235-8] [Citation(s) in RCA: 11] [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] [Received: 05/28/2010] [Accepted: 06/01/2010] [Indexed: 05/29/2023]
Abstract
OBJECTIVES To evaluate isotretinoin effect on alveolar repair after tooth extraction of maxillary incisor and serum calcium levels in rats. STUDY DESIGN Wistar rats (60-day-old) were assigned to control (CG, n = 12) and experimental (EG, n = 20) groups. EG received daily isotretinoin (7.5 mg/kg) for 30 days before surgery and until euthanasia, 7, 21, 28, or 90 days after tooth extraction. Blood was collected in the EG to analyze serum calcium levels before isotretinoin administration and at euthanasia. Right hemimaxillae underwent histological examination, and the slides were stained with HE and analyzed by descriptive light microscopy. RESULTS There was acceleration in the process of alveolar repair in the EG at all time points when compared to controls. Serum calcium levels showed a statistically significant decrease between first and second blood collection at days 21, 28, and 90. CONCLUSIONS Daily isotretinoin in a dose corresponding to the treatment of cystic acne accelerated alveolar repair.
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Affiliation(s)
- Roberta Dalmolin Bergoli
- Department of Oral and Maxillofacial Surgery and Maxillofacial Prosthodontics, School of Dentistry, Universidade Federal de Pelotas, Rua Gonçalves Chaves, 3.657/401 B, Pelotas, Rio Grande do Sul, Brazil.
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Henn S, de Carvalho RV, Ogliari FA, de Souza AP, Line SRP, da Silva AF, Demarco FF, Etges A, Piva E. Addition of zinc methacrylate in dental polymers: MMP-2 inhibition and ultimate tensile strength evaluation. Clin Oral Investig 2011; 16:531-6. [PMID: 21448634 DOI: 10.1007/s00784-011-0551-x] [Citation(s) in RCA: 21] [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] [Received: 07/23/2010] [Accepted: 03/16/2011] [Indexed: 11/26/2022]
Abstract
This study evaluated the effect of zinc methacrylate (ZM) on the inhibition of matrix metalloproteinase 2 (MMP-2) and the ultimate tensile strength (UTS) of an experimental polymer. Enzymes secreted from mouse gingival tissues were analyzed by gelatin zymography in buffers containing 5 mM CaCl(2) (Tris-CaCl(2)) in 50 mM Tris-HCl buffer with various concentrations of ZM (0.5, 1, 2, 4, 8, and 16 mM). The matrix metalloproteinases present in the conditioned media were characterized by immunoprecipitation. The polymer UTS evaluation was performed in eight groups with various concentrations of ZM (0, 0.5, 1, 2.5, 5, 10, 20, and 30 wt.%), in a mechanical testing machine. MMP-2 (62 kDa) was detected in the zymographic assays and inhibited by ZM in all tested concentrations. UTS data were submitted to one-way ANOVA and Tukey's test (α = 0.05), and no significant differences were observed among groups, except in the polymer containing 30% ZM, presenting a significantly lower value when compared with the control group (p < 0.05). The results suggest that ZM inhibits MMP-2 expression in all concentrations tested, while small concentrations did not affect the ultimate tensile strength of the polymer. Zinc methacrylate is a metalloproteinase inhibitor that can be copolymerized with other methacrylate monomers. Yet, the addition of ZM did not affect the resin bond strength. Thus, in vivo tests should be performed to evaluate the performance of this material.
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Affiliation(s)
- Sandrina Henn
- Operative Dentistry Department, School of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS 96015-560, Brazil
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Fernández MR, Carvalho RV, Ogliari FA, Beira FA, Etges A, Bueno M. Cytotoxicity and genotoxicity of sodium percarbonate: a comparison with bleaching agents commonly used in discoloured pulpless teeth. Int Endod J 2010; 43:102-8. [DOI: 10.1111/j.1365-2591.2009.01648.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: 11/29/2022]
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Kreisner PE, Blaya DS, Gaiao L, Maciel-Santos ME, Etges A, Santana-Filho M, Oliveira MG. Histological evaluation of the effect of low-level laser on distraction osteogenesis in rabbit mandibles. Med Oral Patol Oral Cir Bucal 2010; 15:e616-8. [DOI: 10.4317/medoral.15.e616] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Accepted: 11/01/2009] [Indexed: 11/05/2022] Open
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Carvalho RV, Ogliari FA, de Souza AP, Silva AF, Petzhold CL, Line SRP, Piva E, Etges A. 2-hydroxyethyl methacrylate as an inhibitor of matrix metalloproteinase-2. Eur J Oral Sci 2009; 117:64-7. [PMID: 19196320 DOI: 10.1111/j.1600-0722.2008.00591.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study evaluated the effect of different concentrations of 2-hydroxyethyl methacrylate (HEMA) on the inhibition of matrix metalloproteinase-2 (MMP-2) in vitro. Mouse gingival explants were cultured overnight in Dulbecco's modified Eagle's minimal essential medium, following which the expression of secreted enzymes was analyzed by gelatin zymography and the effects of different amounts of HEMA on enzyme activity were investigated. The gelatinolytic proteinases present in the conditioned media were characterized as being matrix metalloproteinases (MMPs) by means of specific chemical inhibition. The MMPs present in the conditioned media were identified, using immunoprecipitation, as MMP-2. Three major bands were detected in the zymographic assays and were characterized, according to their respective molecular weights, into the following forms of MMP-2: zymogene (72 kDa), intermediate (66 kDa), and active (62 kDa). All forms of MMP-2 were inhibited by HEMA in a dose-dependent manner, implying that MMP-2 may be inhibited by HEMA in vivo.
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Affiliation(s)
- Rodrigo V Carvalho
- Department of Operative Dentistry, School of Dentistry, Federal University of Pelotas, Rio Grande do Sul, Brazil.
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Lima GDS, Fontes ST, de Araújo LMA, Etges A, Tarquinio SBC, Gomes APN. A survey of oral and maxillofacial biopsies in children: a single-center retrospective study of 20 years in Pelotas-Brazil. J Appl Oral Sci 2009; 16:397-402. [PMID: 19082398 PMCID: PMC4327710 DOI: 10.1590/s1678-77572008000600008] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Accepted: 06/19/2008] [Indexed: 11/22/2022] Open
Abstract
Despite the large number of published cases about oral and maxillofacial pediatric lesions, the literature is scarce on epidemiological studies regarding the prevalence of these entities. This study retrieved oral and maxillofacial pediatric lesions from the Center of Diagnosis of Oral Diseases (CDDB) at the Dental School of the Federal University of Pelotas (UFPEL), comprising a 20-year period (1983-2002). From the total of 9,465 biopsies received in this period, 625 (6.6%) were from children aged 0 to 14 years. Regardless of the histopathological diagnosis, patient data referring to lesion location, sex and age were collected. Diagnoses were grouped in 13 categories. As much as 89% of the cases occurred in patients aged 7 to 14 years (53% in females and 47% in males). Mucocele (17.2%) was the most common type of lesion, followed by dentigerous cyst (8.6%). In the category of odontogenic tumors, odontoma was the most frequent lesion (64.2%). Malignant lesions were observed in a small section of the sample (1.2%). Generally, the results of the present study are in line with those reported in the literature concerning the most prevalent lesions in the pediatric population. Most lesions were benign, and malignant lesions were diagnosed in a very small part of the sample.
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Affiliation(s)
- Giana da Silveira Lima
- Department of Operative Dentistry, Dental School, Federal University of Pelotas, Pelotas, RS, Brazil
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Lund RG, da Silva Nascente P, Etges A, Ribeiro GA, Rosalen PL, Del Pino FAB. Occurrence, isolation and differentiation of Candida spp. and prevalence of variables associated to chronic atrophic candidiasis. Mycoses 2009; 53:232-8. [PMID: 19389071 DOI: 10.1111/j.1439-0507.2009.01697.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to survey the frequency of Candida spp. in patients with chronic atrophic candidiasis (CAC), to differentiate Candida species and to assess the prevalence of certain infection-associated variables to this disease. Patients with CAC and wearing partial or complete dentures were recruited. Data were obtained by means of a questionnaire with details involving identification of the subject, demographic characteristics, behaviour and medical history, clinical and mycological evaluation and identification of yeast. The sample collection was carried out in the palate or palate and tongue of the subjects using sterilised swabs. Data were submitted to statistical analyses using Fischer's test. Forty-three (53%) cases of CAC showed the presence of Candida albicans. Females (75.2%) wearing complete dentures (60.1%) for more than 10 years (58%) were risk factors to CAC development. It could be concluded that: (a) the results did not confirm a significant difference among patients with CAC concerning the presence or absence of Candida spp.; (b) the occurrence of Candida was negatively related to important factors associated to this opportunistic infection; and (c) mycological findings did not indicate that the variables investigated have a significant effect on oral infections by C. albicans or other Candida species.
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Affiliation(s)
- Rafael Guerra Lund
- Postgraduate Program in Dentistry, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, RS, Brazil.
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Libório TN, Etges A, Neves ADC, Mesquita RA, Nunes FD. Evaluation of the genomic DNA extracted from formalin-fixed, paraffin-embedded oral samples archived for the past 40-years. J Bras Patol Med Lab 2005. [DOI: 10.1590/s1676-24442005000600006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Cazal C, Etges A, Almeida FCSD, Souza SCOMD, Nunes FD, Araújo VCD. Collagenous fibroma (desmoplastic fibroblastoma) of alveolar bone: a case report. J Bras Patol Med Lab 2005. [DOI: 10.1590/s1676-24442005000300008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Etges A, Nunes FD, Ribeiro KCB, Araújo VC. Immunohistochemical expression of retinoblastoma pathway proteins in normal salivary glands and in salivary gland tumours. Oral Oncol 2004; 40:326-31. [PMID: 14747065 DOI: 10.1016/j.oraloncology.2003.08.021] [Citation(s) in RCA: 28] [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: 10/26/2022]
Abstract
The expression of G1-phase cell-cycle regulators is commonly deregulated in human malignancies. In the present study, we investigate components of the retinoblastoma (RB) pathway in normal salivary glands (NSG) and in salivary gland tumours (SGT). Samples of NSG, pleomorphic adenoma (PA), adenoid cystic carcinoma (ACC), mucoepidermoid carcinoma (MEC), epithelial-myoepithelial carcinoma (EMC), malignant myoepithelioma (MEM), carcinoma ex pleomorphic adenoma (CEPA), and polymorphous, low-grade adenocarcinoma (PLGA) were examined immunohistochemically using antibodies to cyclin D1, cyclin-dependent kinase 4 (CDK-4), retinoblastoma protein (pRb), CDK inhibitor p16 and transcription factor E2F-1. In normal salivary glands, cyclin D1 and cdk-4 were not expressed in any case while p16 was positively expressed. pRb was abundant and E2F-1 moderately expressed. In tumors, cdk-4 was overexpressed in half of the cases. Most tumour cases showed decreased pRb immunoexpression compared to normal salivary glands. In contrast, expression of p16 and E2F-1 increased. pRb expression was absent in three cases of PA, two of EMC and one of CEPA. One case of MEM and one of PLGA showed no E2F-1 expression. Statistical analyses revealed positive correlations between cyclin D1 and cdk-4, cyclin D1 and E2F-1, cdk-4 and E2F-1, and p16 and E2F-1. The benign and malignant tumours expressed retinoblastoma pathway proteins differently form the normal salivary gland. Our findings suggest that, pRb pathway deregulation in salivary gland neoplasms is unrelated to their biological behaviour.
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Affiliation(s)
- A Etges
- Oral Pathology, School of Dentistry, University of São Paulo/USP, São Paulo, Avenida Prof. Lineu de Azevedo Prestes, 2227, Cidade Universitária, Brazil
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Abstract
BACKGROUND Salivary duct carcinoma (SDC) is considered to be a distinct malignancy of the major salivary glands, because of its highly aggressive behaviour, and the high rate of recurrence, metastasis, and disease related death. AIMS To investigate expression of the proteins involved in the retinoblastoma (pRb) and p53 pathways, which control cell cycle progression at the G1/S checkpoint, and also expression of the c-erbB-2 oncoprotein in SDCs. METHODS Using a streptavidin-biotin method, five cases of SDC were evaluated immunohistochemically for the presence of cyclin D1, CDK4 (cyclin dependent kinase 4), p16 (CDK2A), pRb (retinoblastoma protein), E2F-1, p53, mdm2 (murine double minute 2), bcl-2, and the c-erbB-2 oncoprotein to determine whether there was a correlation between the expression of these proteins and patient outcome. RESULTS All of the cases showed deregulation of the pRb and p53 pathways. Of the five patients analysed, only the patient with longterm survival (10 years) was not positive for c-erbB-2 expression. CONCLUSIONS c-erbB-2 overexpression was associated with a poor prognosis. Aggressive behaviour, recurrence, and metastatic potential do not appear to be related to cell cycle deregulation, but seem to be associated with the c-erbB-2 oncoprotein, which is involved in matrix degradation and proteolitic activity, in addition to increases in vessel permeability, endothelial cell growth, proliferation, migration, and differentiation. There was a correlation between c-erbB-2 oncoprotein expression and aggressive behaviour in SDCs.
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Affiliation(s)
- A Etges
- Oral Pathology, School of Dentistry, Federal University of Pelotas/UFP, Pelotas, Rio Grande do Sol, Brazil, CEP 96015
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Veltrini VC, Etges A, Magalhães MHCG, de Araújo NS, de Araújo VC. Solitary fibrous tumor of the oral mucosa--morphological and immunohistochemical profile in the differential diagnosis with hemangiopericytoma. Oral Oncol 2003; 39:420-6. [PMID: 12676265 DOI: 10.1016/s1368-8375(02)00148-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [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: 01/30/2023]
Abstract
The objective was to investigate two cases of solitary fibrous tumor (SFT) of oral mucosa, emphasizing the differential diagnosis with one case of oral hemangiopericytoma (HPC), in terms of their morphological and immunohistochemical features. Solitary fibrous tumors showed cellularity and collagenization varying from area to area, focal perivascular hyalinization, scattered giant nuclei cells and abundant mast cells throughout the tumor. The hemangiopericytoma case exhibited thin-walled and dilated vessels lined with flat endothelial cells, identified by "staghorn appearance". Tumoral cells of solitary fibrous tumor exhibited immunohistochemical positivity for CD34, as well as endothelial cells. The hemangiopericytoma was positive only in endothelial cells. In solitary fibrous tumor, alpha-smooth muscle actin, h-caldesmon and laminin stained the wall vessels. In hemangiopericytoma, on the other hand, the wall vessels were positive only for laminin, which staining was also observed in perivascular tumoral cells. The morphological and immunohistochemical differences observed allowed us to infer these lesions constitute distinct entities.
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Affiliation(s)
- Vanessa C Veltrini
- Oral Pathology Department, School of Dentistry, University of São Paulo, Av Prof Lineu Prestes, 2227, Cidade Universitária, São Paulo/SP, Brazil
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Abstract
There are few studies on pediatric oral pathologies in the literature. This study presents data from a review of 2,356 biopsies of young patients (birth to 14 years) received over 15 years (1985-2000) in the Oral Pathology Service at the University of Sao Paulo, Brazil. Information about patients (sex, age, race) and histopathological diagnosis was retrieved. Diagnosis data of 2,356 biopsies were classified into 20 groups. There was no significant difference between male (50.0%) and female (49.0%) patients. White is the predominant race (69.0%), and patients ages were concentrated between 9 and 14 years old (70%). Mucocele was the most frequent (13.5%), followed by dentigerous cyst (6.5%) and fibrous hyperplasia (5.4%). Papilloma and Langerhans cells histiocytosis were the most common non-odontogenic benign and malignant tumors, respectively. In the group of odontogenic tumors, odontoma was the most frequent, and ameloblastoma had a significant incidence (27 cases). These data are important in order to detect differences in geographic areas, diagnosis line tendencies and for clinicians to perform judgment to evaluate of the pediatric patients before the biopsy and management of pediatric oral lesions.
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Aver-De-Araujo LM, Chaves-Tarquinio SB, Neuzling-Gomes AP, Etges A. Intraosseous pleomorphic adenoma: case report and review of the literature. Med Oral 2002; 7:164-70. [PMID: 11984497] [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: 02/24/2023]
Abstract
Pleomorphic adenoma is the most common neoplasm of the salivary glands, affecting mainly the parotid gland. The preferential intraoral site of this tumor is the palate. A case of a 31-year-old woman with an intraosseous pleomorphic adenoma located in the maxilla (left paramedian region), showing an approximate evolution of one year is reported. The present intraosseous case represents a rare location, with the tumor probably originating from glandular epithelial remnants captured during embryogenesis. In a review of the literature of 142 cases of intragnathic localization (24% in the maxilla) are identified. A slight predominance of women was observed (56%), with 55% of the patients being affected during the 5th to 7th decade of life. The tumors were malignant in 94% of the cases, with special predominance of mucoepidermoid carcinoma (65%). Intraosseous pleomorphic adenomas are rare, with the present patient being the 6th case reported in the literature and the second found in the maxilla. Mean age of the 5 previously reported cases was 58.8 years.
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Affiliation(s)
- L M Aver-De-Araujo
- Patologia Bucal. Centro de Diagnostico e Histopatologia - Faculdade de Odontologia - UFPel - Brasil E-mail:
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