RESUMO
The use of cosmetic fillers agents in orofacial region has become more often used for esthetic concern. Although adverse effects are rare, some patients may develop foreign body reaction to such fillers. Hyaluronic acid (HA) is a biomaterial in the spotlight, because it is normally present in several tissues of human body. The aim of this study was to report a case of a 54-year-old white woman with granulomatous reaction to the HA located in the lips. In addition, a review of the English-language literature of all previously described cases of this condition in oral and perioral region was performed. The location, clinical features, symptoms, time between injection and reaction, type of treatment and treatment outcome of 17 cases were summarized. The clinical and histopathological examination along with a detailed history about this condition is very important to management of patients with nodular lesions in maxillofacial region.
Assuntos
Preenchedores Dérmicos/efeitos adversos , Granuloma de Corpo Estranho/induzido quimicamente , Granuloma de Corpo Estranho/diagnóstico , Ácido Hialurônico/efeitos adversos , Lábio , Técnicas Cosméticas/efeitos adversos , Feminino , Granuloma de Corpo Estranho/patologia , Humanos , Pessoa de Meia-IdadeRESUMO
EEF1D (eukaryotic translation elongation factor 1δ) is a subunit of the elongation factor 1 complex of proteins that mediates the elongation process during protein synthesis via enzymatic delivery of aminoacyl-tRNAs to the ribosome. Although the functions of EEF1D in the translation process are recognized, EEF1D expression was found to be unbalanced in tumours. In the present study, we demonstrate the overexpression of EEF1D in OSCC (oral squamous cell carcinoma), and revealed that EEF1D and protein interaction partners promote the activation of cyclin D1 and vimentin proteins. EEF1D knockdown in OSCC reduced cell proliferation and induced EMT (epithelial-mesenchymal transition) phenotypes, including cell invasion. Taken together, these results define EEF1D as a critical inducer of OSCC proliferation and EMT.
Assuntos
Carcinoma de Células Escamosas/genética , Proliferação de Células/genética , Transição Epitelial-Mesenquimal/genética , Regulação Neoplásica da Expressão Gênica/genética , Neoplasias de Cabeça e Pescoço/genética , Neoplasias Bucais/genética , Fator 1 de Elongação de Peptídeos/genética , Carcinoma de Células Escamosas/diagnóstico , Linhagem Celular Tumoral , Movimento Celular/genética , Neoplasias de Cabeça e Pescoço/diagnóstico , Humanos , Neoplasias Bucais/diagnóstico , Neoplasias Bucais/metabolismo , Neoplasias Bucais/patologia , Fenótipo , Carcinoma de Células Escamosas de Cabeça e PescoçoRESUMO
Understanding the molecular mechanisms of oral carcinogenesis will yield important advances in diagnostics, prognostics, effective treatment, and outcome of oral cancer. Hence, in this study we have investigated the proteomic and peptidomic profiles by combining an orthotopic murine model of oral squamous cell carcinoma (OSCC), mass spectrometry-based proteomics and biological network analysis. Our results indicated the up-regulation of proteins involved in actin cytoskeleton organization and cell-cell junction assembly events and their expression was validated in human OSCC tissues. In addition, the functional relevance of talin-1 in OSCC adhesion, migration and invasion was demonstrated. Taken together, this study identified specific processes deregulated in oral cancer and provided novel refined OSCC-targeting molecules.
Assuntos
Carcinoma de Células Escamosas/metabolismo , Adesões Focais/metabolismo , Regulação Neoplásica da Expressão Gênica , Proteínas de Neoplasias/biossíntese , Neoplasias Experimentais/metabolismo , Talina/biossíntese , Neoplasias da Língua/metabolismo , Animais , Carcinoma de Células Escamosas/genética , Carcinoma de Células Escamosas/patologia , Movimento Celular/genética , Adesões Focais/genética , Adesões Focais/patologia , Xenoenxertos , Humanos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Invasividade Neoplásica , Proteínas de Neoplasias/genética , Transplante de Neoplasias , Neoplasias Experimentais/genética , Neoplasias Experimentais/patologia , Proteômica/métodos , Talina/genética , Neoplasias da Língua/genética , Neoplasias da Língua/patologia , Regulação para Cima/genéticaRESUMO
BACKGROUND: ADAM17 is one of the main sheddases of the cells and it is responsible for the cleavage and the release of ectodomains of important signaling molecules, such as EGFR ligands. Despite the known crosstalk between ADAM17 and EGFR, which has been considered a promising targeted therapy in oral squamous cell carcinoma (OSCC), the role of ADAM17 in OSCC development is not clear. METHOD: In this study the effect of overexpressing ADAM17 in cell migration, viability, adhesion and proliferation was comprehensively appraised in vitro. In addition, the tumor size, tumor proliferative activity, tumor collagenase activity and MS-based proteomics of tumor tissues have been evaluated by injecting tumorigenic squamous carcinoma cells (SCC-9) overexpressing ADAM17 in immunodeficient mice. RESULTS: The proteomic analysis has effectively identified a total of 2,194 proteins in control and tumor tissues. Among these, 110 proteins have been down-regulated and 90 have been up-regulated in tumor tissues. Biological network analysis has uncovered that overexpression of ADAM17 regulates Erk pathway in OSCC and further indicates proteins regulated by the overexpression of ADAM17 in the respective pathway. These results are also supported by the evidences of higher viability, migration, adhesion and proliferation in SCC-9 or A431 cells in vitro along with the increase of tumor size and proliferative activity and higher tissue collagenase activity as an outcome of ADAM17 overexpression. CONCLUSION: These findings contribute to understand the role of ADAM17 in oral cancer development and as a potential therapeutic target in oral cancer. In addition, our study also provides the basis for the development of novel and refined OSCC-targeting approaches.
Assuntos
Proteínas ADAM/metabolismo , Carcinoma de Células Escamosas/metabolismo , Neoplasias Bucais/metabolismo , Proteínas ADAM/genética , Proteína ADAM17 , Animais , Western Blotting , Carcinoma de Células Escamosas/genética , Adesão Celular/fisiologia , Movimento Celular/fisiologia , Proliferação de Células , Sobrevivência Celular/fisiologia , Técnicas de Silenciamento de Genes , Xenoenxertos , Humanos , Imuno-Histoquímica , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Neoplasias Bucais/genética , Proteômica , Reação em Cadeia da Polimerase em Tempo Real , TransfecçãoRESUMO
OBJECTIVE: To compare dental plaster model (DPM) and cone-beam computed tomography (CBCT) in the measurement of the dental arches, and investigate whether CBCT image artifacts compromise the reliability of such measurements. MATERIALS AND METHODS: Twenty patients were divided into two groups based on the presence or absence of metallic restorations in the posterior teeth. Both dental arches of the patients were scanned with the CBCT unit i-CAT, and DPMs were obtained. Two examiners obtained eight arch measurements on the CBCT images and DPMs and repeated this procedure 15 days later. The arch measurements of each patient group were compared separately by the Wilcoxon rank sum (Mann-Whitney U) test, with a significance level of 5% (α â=â .05). Intraclass correlation measured the level of intraobserver agreement. RESULTS: Patients with healthy teeth showed no significant difference between all DPM and CBCT arch measurements (P > .05). Patients with metallic restoration showed significant difference between DPM and CBCT for the majority of the arch measurements (P > .05). The two examiners showed excellent intraobserver agreement for both measuring methods with intraclass correlation coefficient higher than 0.95. CONCLUSION: CBCT provided the same accuracy as DPM in the measurement of the dental arches, and was negatively influenced by the presence of image artifacts.
