Navegando por Autor "Moysés, Raquel Ajub"
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Artigo PAI-1 expression in intratumoral inflammatory infiltrate contributes to lymph node metastasis in oral cancer: a cross-sectional study(Elsevier, 2021-04-15) Oliveira, Mayara Mota de; Peterle, Gabriela Tonini; Couto, Cinthia Vidal Monteiro da Silva; Maia, Lucas de Lima; Kühl, Andre; Santos, Joaquim Gasparini dos; Moysés, Raquel Ajub; Trivilin, Leonardo Oliveira; Borçoi, Aline Ribeiro; Archanjo, Anderson Barros; Assis, Arícia Leone Evangelista Monteiro de; Nunes, Fábio Daumas; Santos, Marcelo dos; Silva, Adriana Madeira Álvares daIntroduction: Immune cells contribute with mediators in the protein expression profile of the tumor microenvi ronment. Levels of plasminogen activator inhibitor-1 (PAI-1) are elevated in non-malignant inflammatory con ditions; however, the association between PAI-1 expression and inflammation remains uncertain in oral squamous cell carcinoma (OSCC). This study aimed to investigate PAI-1 expression in mononuclear inflammatory cell infiltrate in OSCC and its role as a prognostic marker. Methods: Samples were collected from patients with OSCC, treated surgically, and followed for 24 months after the procedure. Thirty-nine tumoral tissue were analyzed using immunohistochemistry. Correlation between protein expression, clinicopathological parameters, and the prognosis was investigated. Results: Positive PAI-1 expression in mononuclear inflammatory cell infiltrate was significantly associated with lymph node status (p = 0.009) and with the cytoplasmic expression of vascular endothelial growth factor A (VEGFA) (p = 0.028). Multivariate analysis revealed weak PAI-1 expression as an independent marker for lymph node metastases, with approximately 8-fold increased risk compared to strong expression (OR = 8.60; CI =1.54–48.08; p = 0.014). Conclusion: Our results suggest that the strong PAI-1 expression in intratumoral inflammatory infiltrate is an indicator of a better prognosis for patients diagnosed with oral squamous cell carcinoma.Artigo PAI-1, CAIX, and VEGFA expressions as prognosis markers in oral squamous cell carcinoma(John Wiley and Sons, 2018-05) Peterle, Gabriela Tonini; Maia, Lucas Lima; Trivilin, Leonardo Oliveira; Oliveira, Mayara Mota de; Santos, Joaquim Gasparini dos; Mendes, Suzanny Oliveira; Stur, Elaine; Agostini, Lidiane Pignaton; Rocha, Lília Alves; Moysés, Raquel Ajub; Cury, Patrícia Maluf; Nunes, Fábio Daumas; Louro, Iúri Drumond; Santos, Marcelo dos; Silva, Adriana Madeira Alvares daBackground: In oral squamous cell carcinoma (OSCC), the HIF-1 complex promotes the expression of genes involved in specific mechanisms of cell survival under hypoxic conditions, such as plasminogen activator inhibitor-1 (PAI-1), carbonic anhydrase 9 (CAIX), and vascular endothelial growth factor A (VEGFA). The study aimed to investigate the presence and prognostic value of PAI-1, CAIX, and VEGFA in OSCC. Materials and Methods: Immunohistochemistry was used to analyze the expressions of these proteins in 52 tumoral tissue samples of patients with OSCC, surgically treated and followed by a minimum of 24 months after surgery. The correlations between protein expressions and clinicopathological parameters and prognosis were analyzed. Results: Positive PAI-1 membrane expression was significantly associated with local disease relapse (P = .027). Multivariate analysis revealed that the positive PAI-1 membrane expression is an independent marker for local disease relapse, with approximately 14-fold increased risk when compared to negative expression (OR = 14.49; CI = 1.40-150.01, P = .025). Strong PAI-1 cytoplasmic expression was significantly associated with the less differentiation grade (P = .027). Strong CAIX membrane expression was significantly associated with local disease-free survival (P = .038). Positive CAIX cytoplasmic expression was significantly associated with lymph node affected (P = .025) and with disease-specific survival (P = .022). Multivariate analysis revealed that the positive CAIX cytoplasmic expression is an independent risk factor for disease-related death, increasing their risk approximately 3-fold when compared to negative expression (HR = 2.84; CI = 1.02-7.87, P = .045). Positive VEGFA cytoplasmic expression was significantly associated with less differentiation grade (P = .035). Conclusion: Our results suggest a potential role for these expressions profiles as tumor prognostic markers in OSCC patients