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Rodrigues MFSD, Tobouti PL, Molon AC, Sedassari BT, Nunes FD, Pinto DDS, de Sousa SCOM. Histopathological findings and immunohistochemical expression of the stem cell markers CD44, ALDH1, Bmi-1, and Nanog in oral solitary fibrous tumors. Oral Surg Oral Med Oral Pathol Oral Radiol 2021; 131:444-451. [PMID: 33610537 DOI: 10.1016/j.oooo.2020.11.008] [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: 04/29/2020] [Revised: 10/25/2020] [Accepted: 11/08/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the histomorphologic presentation and the expression of stem cell-related markers in a series of oral solitary fibrous tumors (SFTs). STUDY DESIGN Histopathological variables and the expression of the standard stem cell markers CD34 and CD99, used for SFT diagnosis, as well as STAT6 were evaluated in 13 oral SFTs. The expression of the cancer stem cell markers CD44, ALDH1, Bmi-1, and Nanog and the tumor suppressor gene p16Ink4a were also investigated. RESULTS The majority of oral SFTs were circumscribed and characterized by a proliferation of spindle cells arranged in a hyalinized stroma. Only 2 oral SFTs showed >4 mitoses/10 high-power fields. Hypercellularity as well as nuclear and cellular pleomorphism were classified as low and moderate in most of the oral SFTs. All oral SFTs were positive for CD34, STAT6, CD44, ALDH1, Bmi-1, and p16Ink4a. CD99 and Nanog expression was observed in 11 and 10 oral SFT cases, respectively. CONCLUSION We suggest that STAT6 and ALDH1 have relevant diagnostic value. The expression of CD44, ALDH1, Bmi-1, and Nanog, which is observed in cancer stem cells, may confer advantages to oral SFT cells.
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Affiliation(s)
| | | | - Angela Cristina Molon
- Biophotonics Applied to Health Science, Nove de Julho University, São Paulo, Brazil.
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Custódio M, Tobouti PL, Matuck B, de Sousa SCOM. Incidental finding of subgemmal neurogenous plaque upon retrospective evaluation of oral lymphoepithelial cysts. Oral Maxillofac Surg 2018; 22:429-433. [PMID: 30298214 DOI: 10.1007/s10006-018-0726-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/02/2018] [Indexed: 06/08/2023]
Abstract
PURPOSE We aimed to compare the histomorphological features of oral lymphoepithelial cysts (OLC) in different locations of the oral cavity and to verify the association between oral lymphoepithelial cysts and subgemmal neurogenous plaque (SNP) on biopsies from the lateral border of the tongue. METHODS All cases diagnosed as OLC from the Oral Pathology Service at the School of Dentistry/University of São Paulo were retrieved. For all the cysts located in the tongue, their association to SNP was analyzed. Immunohistochemical staining against S100 was performed to confirm the diagnosis of SNP. RESULTS Thirty-one cases were selected for morphological analysis and SNP was identified in 40% of cases, all of them positive for S100. In these cases, macroscopic analysis demonstrated two independent fragments. Microscopic analysis showed that cysts located in the floor of the mouth and ventral surface of the tongue showed less intense exocytosis, less formation of lymphoid follicles, and predominantly a moderate inflammatory infiltrate. CONCLUSIONS OLC have a similar histological pattern regardless the location within the oral cavity and. In some cases, the biopsy specimen may be accompanied by a SNP as an adjacent independent structure.
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Affiliation(s)
- Marcos Custódio
- Oral and Maxillofacial Pathology Department, School of Dentistry-University of São Paulo, Av. Professor Lineu Prestes, 2227 Cidade Universitária, São Paulo, SP, 05508-000, Brazil.
| | - Priscila Lie Tobouti
- Oral and Maxillofacial Pathology Department, School of Dentistry-University of São Paulo, Av. Professor Lineu Prestes, 2227 Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Bruno Matuck
- Oral and Maxillofacial Pathology Department, School of Dentistry-University of São Paulo, Av. Professor Lineu Prestes, 2227 Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Suzana C O M de Sousa
- Oral and Maxillofacial Pathology Department, School of Dentistry-University of São Paulo, Av. Professor Lineu Prestes, 2227 Cidade Universitária, São Paulo, SP, 05508-000, Brazil
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Caliento R, Sarmento DJDS, Silva ÉMP, Tozetto-Mendoza TR, Tobouti PL, Benini V, Braz-Silva PH, Gallottini M. Oral shedding of HSV-1 and EBV and oral manifestations in paediatric chronic kidney disease patients and renal transplant recipients. Acta Odontol Scand 2018; 76:539-544. [PMID: 29409366 DOI: 10.1080/00016357.2018.1437218] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Previous research demonstrated that salivary shedding of HSV-1 and EBV occurs often in adult renal transplant recipients, but there is a lack of studies on the presence of them in the saliva of paediatric population. Therefore, the objective of this study is to describe oral characteristics and to compare the shedding profile of HSV-1 and EBV in the saliva of children with renal transplant to that of chronic kidney disease patients and controls. METHODS This is a cross-sectional study involving 100 children, being 25 renal transplant recipients, 25 chronic kidney disease patients and 50 healthy children. Demographic and oral clinical characteristics were assessed. Saliva samples were collected and submitted to screening for EBV and HSV-1 by using nested polymerase chain reaction technique. Fisher's exact, Pearson's chi-square and Kruskal-Wallis tests were used for statistical analysis at a significance level of 5%. RESULTS Oral shedding of HSV-1 (28%) and EBV (60%) were significantly higher in renal transplant recipients compared to the other groups. Single vesicles in the oral mucosa were statistically associated with the presence of HSV-1 (p = .035). In children with chronic kidney disease, there was a higher prevalence of pale oral mucosa (32%) and enamel hypoplasia (40%) compared to paediatric renal transplant recipients and controls. Dental calculus (36%), candidiasis (8%), drug-induced gingival overgrowth (16%), mouth blisters (8%), xerostomia (12%) and salivary gland enlargement (20%) were more common in paediatric renal transplant recipients. CONCLUSIONS Therefore, it can be concluded that salivary shedding of HSV-1 and EBV in paediatric patients was more often found in renal transplant recipients than in the renal failure and control children. Transplanted recipients showed more oral manifestations than renal failure and control children did.
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Affiliation(s)
- Rubens Caliento
- Department of Stomatology, Division of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | | | | | - Priscila Lie Tobouti
- Department of Stomatology, Division of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Vanda Benini
- Department of Nephrology, School of Medicine, Irmandade Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | - Paulo Henrique Braz-Silva
- Laboratory of Virology, Institute of Tropical Medicine, University of São Paulo, São Paulo, Brazil
- Department of Stomatology, Division of General Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Marina Gallottini
- Department of Stomatology, Division of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Tobouti PL, Horikawa FK, Matuck BF, de Sousa SCOM, Alves FA. Oral focal mucinosis of the hard palate and gingiva. Autops Case Rep 2018; 8:e2018044. [PMID: 30775321 PMCID: PMC6360821 DOI: 10.4322/acr.2018.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 08/28/2018] [Indexed: 11/23/2022] Open
Abstract
Oral focal mucinosis (OFM) is an uncommon, asymptomatic, submucosal, slow-growing nodule representing a counterpart of the cutaneous focal mucinosis (CFM). OFM has a female predilection with the highest prevalence in the fifth decade of life. About 68% of OFMs occur in the gingiva and 14% in the palate. We present the case of a 41-year-old woman presenting a progressively growing mass on the palate, since the last 8 months. The diagnostic workup led to the diagnosis of an unusual OFM with the clinical presentation involving the gingiva and hard palate. This case report discusses the clinical and histopathological differential diagnosis.
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Affiliation(s)
- Priscila Lie Tobouti
- Universidade de São Paulo, School of Dentistry, Stomatology Department. São Paulo, SP, Brazil.,Universidade de São Paulo, School of Dentistry, Oral Pathology. São Paulo, SP, Brazil
| | - Fernando Kendi Horikawa
- Universidade de São Paulo, School of Dentistry, Stomatology Department. São Paulo, SP, Brazil
| | - Bruno Fernandes Matuck
- Universidade de São Paulo, School of Dentistry, Stomatology Department. São Paulo, SP, Brazil
| | | | - Fábio Abreu Alves
- Universidade de São Paulo, School of Dentistry, Stomatology Department. São Paulo, SP, Brazil.,A.C. Camargo Cancer Center, Stomatology Department. São Paulo, SP, Brazil
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Tobouti PL, de Andrade Martins TC, Pereira TJ, Mussi MCM. Antimicrobial activity of copaiba oil: A review and a call for further research. Biomed Pharmacother 2017; 94:93-99. [DOI: 10.1016/j.biopha.2017.07.092] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/19/2017] [Accepted: 07/19/2017] [Indexed: 11/28/2022] Open
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Lie Tobouti P, Casaroto AR, de Almeida RSC, de Paula Ramos S, Dionísio TJ, Porto VC, Santos CF, Lara VS. Expression of Secreted Aspartyl Proteinases in an Experimental Model of Candida albicans
-Associated Denture Stomatitis. J Prosthodont 2015; 25:127-34. [DOI: 10.1111/jopr.12285] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2014] [Indexed: 01/12/2023] Open
Affiliation(s)
- Priscila Lie Tobouti
- Department of Stomatology (Oral Pathology), Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Ana Regina Casaroto
- Department of Stomatology (Oral Pathology), Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | | | | | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics, Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Carlos Ferreira Santos
- Department of Biological Sciences, Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Vanessa Soares Lara
- Department of Stomatology (Oral Pathology), Bauru School of Dentistry; University of São Paulo; Bauru Brazil
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Tobouti PL, Mussi MCM, Rossi DCP, Pigatti FM, Taborda CP, de Assis Taveira LA, de Sousa SCOM. Influence of melaleuca and copaiba oils on Candida albicans adhesion. Gerodontology 2014; 33:380-5. [PMID: 25439584 DOI: 10.1111/ger.12172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 10/23/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To evaluate the efficacy of Melaleuca alternifolia and Copaifera officinalis in inhibiting the adhesion of Candida albicans biofilm. BACKGROUND Over 65% of denture wearers suffer from denture stomatitis, which is one of the most prevalent forms of oral candidiasis. This disease is characterised by the inflammation of the oral mucosa in contact with the contaminated denture. The contaminated denture contributes to the switch of C. albicans from yeast to its pathogenic hyphal form. Candida albicans adheres and colonises the polymethylmethacrylate resin surfaces and thus contributes to the development of denture stomatitis. MATERIALS AND METHODS The minimal inhibitory concentration (MIC) of M. alternifolia and Co. officinalis was assessed by the agar dilution method. Sixty-six thermopolymerised acrylic resin squares were used and treated with phosphate-buffered saline, sodium hypochlorite 1%, melaleuca 0.75%, melaleuca 0.375%, melaleuca 0.188% and copaiba 10%. For adherence and biofilm formation, the treated squares were placed in six-well tissue culture plates containing 1 × 10(7) cells/ml of ATCC1023 or SC5314 in Roswell Park Memorial Institute (RPMI) medium, and after 12 h, the planktonic cells were counted. RESULTS Copaiba oil did not inhibit C. albicans growth. However, melaleuca oil showed an MIC value of 0.375% (3.4 mg/ml) for ATCC10231 and 0.093% (0.84 mg/ml) for SC5314. CONCLUSIONS Our results demonstrated that M. alternifolia oil inhibited the growth of C. albicans. Moreover, both oils promoted significant adhesion reduction in the tested strains. These findings suggest the possibility of using these oils in prophylaxes against candidiasis.
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Affiliation(s)
- Priscila Lie Tobouti
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Diego Conrado Pereira Rossi
- Department of Microbiology, Immunology and Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Carlos Pelleschi Taborda
- Department of Microbiology, Immunology and Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Tolentino ES, Centurion BS, Tjioe KC, Casaroto AR, Tobouti PL, Frederigue Junior U, Lara VS, Damante JH, Sant'ana E, Gonçales ES. Psammomatoid juvenile ossifying fibroma: an analysis of 2 cases affecting the mandible with review of the literature. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 113:e40-5. [DOI: 10.1016/j.oooo.2011.08.005] [Citation(s) in RCA: 9] [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] [Received: 06/27/2011] [Revised: 08/10/2011] [Accepted: 08/23/2011] [Indexed: 10/28/2022]
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Ramos SDP, Ortolan GO, Dos Santos LM, Tobouti PL, Hidalgo MM, Consolaro A, Itano EN. Anti-dentine antibodies with root resorption during orthodontic treatment. Eur J Orthod 2011; 33:584-91. [PMID: 21300727 DOI: 10.1093/ejo/cjq145] [Citation(s) in RCA: 14] [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: 11/12/2022]
Abstract
The aim of this study was to analyse serum IgG levels and salivary secretory IgA (sIgA) levels in human dentine extract (HDE) before (T0) and 6 months after (T6) orthodontic treatment and to correlate anti-HDE autoantibodies to root resorption. Fifty orthodontic patients were selected, 19 males (15.6 ± 8.5 years) and 31 females (21.4 ± 11.2 years), 19 in the mixed dentition (10.3 ± 1.9 years) and 31 in the permanent dentition (24.6 ± 9.9 years). Fifty individuals not undergoing orthodontic treatment matched by gender and age were selected as the controls. Periapical radiographs of the upper central incisors and saliva sampling were obtained of all patients at T0 and T6. Serum samples were collected from the permanent dentition patients (n = 31). Antibody levels were determined by means of immunoenzyme assay. At T6, root resorption was classified as grade 0 (no resorption), grade 1 (slight resorption), and grade 2 (moderate to severe resorption). Differences between antibody levels at T0 and T6 and among different grades of resorption were determined by paired t- and Kruskal-Wallis tests, respectively. Spearman's rank correlation coefficient was applied to detect correlation between sIgA and IgG levels, and logistic regression to determine the association of root resorption grade and the studied variables. Differences were considered significant at P < 0.05. Serum anti-HDE IgG levels decreased (P < 0.01) in grade 2 root resorption patients during treatment and was not correlated to salivary sIgA levels or other variables. Patients who had grade 2 root resorption at T6 showed higher levels of anti-HDE sIgA (P < 0.001). Anti-HDE sIgA levels at T0 and root shape were the main factors associated with the degree of root resorption. The results suggest that variations to systemic and local humoural immune response to dentine antigens may occur during orthodontic treatment. High levels of salivary sIgA before treatment were associated with more advanced lesions after 6 months of treatment.
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