14 research outputs found

    Investigation of oral and general health status and IL-1β gene polymorphism as risk factors for oral mucositis in hematopoietic stem cell transplantation patients

    Get PDF
    The aim of the present study was to analyze the relationship of OM with possible risk factors such as oral health condition, immunological status and IL-1β profile in patients submitted to hematopoietic stem cell transplantation (HSCT). Fifty-four individuals submitted to HSCT were included. All patients received previous dental treatment and photobiomodulation (PBM) as the institutional OM preventive protocol. OM scores, immune status, and IL-1β levels were determined during the conditioning period and at D+3 and D+8 after HSC infusion. IL-1β gene polymorphism was also analyzed during conditioning. Possible associations of OM with risk factors were analyzed using conditional Fisher’s exact test. OM was observed in 34 patients (62.9%) classified as Grade 1 (13 patients/24.1%), Grade 2 (14 patients/25.9%), Grade 3 (3 patients/5.5%), and Grade 4 (4 patients/7.4%). Allogeneic HSCT individuals exhibited a higher OM grade than autologous subjects. Moreover, an association was observed between severe OM and severe gingivitis (p = 0.01), neutropenia (p = 0.03), and leukopenia (p = 0.04). A significant association between OM and lower IL-1β levels was detected at three time points, i.e., conditioning (p = 0.048), D+3 (p = 0.01), and D+8 (p = 0.005). The results showed that IL-1β gene polymorphism was not associated with OM. Our study provided important insights into the scope of OM risk factors in the setting of HSCT. Patients submitted to HSCT with severe gingivitis prior to chemotherapy and with severe neutropenia and leukopenia exhibited a higher OM grade. Further investigation will be necessary to better understand the exact role of IL-1β in the context of OM pathobiology and to validate cytokine analysis in larger cohorts

    Relação entre estadiamento, características histopatológicas, proliferação celular e prognóstico de carcinoma espinocelular de língua

    Get PDF
    O objetivo deste trabalho foi avaliar a correlação entre parâmetros clínicos (TNM), graduação histopatológica, número de AgNORs por núcleo e expressão de Ki-67 na zona de invasão com o prognóstico de carcinoma espinocelular de língua. Foram selecionados dez casos de carcinoma espinocelular de língua e divididos em dois grupos: bom prognóstico (ausência de metástases á distância e/ou regionais, sobrevida livre de doença) e mau prognóstico (presença de metástases, recidiva, óbito). O material de biópsia foi submetido às técnicas de hematoxilina/eosina, de impregnação pela prata para evidenciação das NORs e de detecção imunohistoquímica do antígeno de proliferação nuclear Ki-67. Concluiu-se que T4 por si só já é um indicador de mau prognóstico e que nos tumores de grau II, a proliferação celular pode refletir o prognóstico do tumor

    Aspectos clinico-patológicos de ameloblastomas no sul do Brasil : 55 anos de uma única Instituição

    Get PDF
    Objective: Ameloblastoma is a benign odontogenic tumor (OT) originating from the proliferation of odontogenic epithelium without involvement of the mesenchymal tissue. The aims of the present study were to perform a retrospective analysis of ameloblastoma, compare the findings with those described in previous studies and outline the epidemiological profile of this type of tumor in southern Brazilian population. Methods: Cases of ameloblastoma were retrieved between 1954 and 2009 from a single center and analyzed for age, gender, ethnic, primary site and histological type. Cases were classified according to the 2005 WHO classification of OTs. Results: Descriptive statistical analysis of the data was performed, with the determination of the frequency of the categorical variables. Eighty-nine cases of ameloblastoma were found: 78 cases of solid tumor (88.6%), two cases of desmoplastic tumor (2.2%) and nine cases of the unicystic tumor (10.2%). There was a predominance of the female gender (58.4%) and Caucasian ethnicity (62.9%). Most ameloblastomas were located in the mandible (78.6%) and 40.2% occurred prior to the third decade of life. Conclusion: The present findings are in agreement with those reported in previous studies carried out in other states of Brazil and support that notion that there may be a geographical influence on the profile of patients affected by ameloblastoma.Introdução: Ameloblastoma é uma neoplasia odontogênica benigna (NOB) que se origina da proliferação do epitélio odontogênico sem envolvimento do mesênquima. Os objetivos do presente estudo foram realizar uma análise retrospectiva do ameloblastoma, comparar os resultados com os descritos em estudos anteriores e traçar o perfil epidemiológico deste tipo de tumor na população do sul do Brasil. Metodologia: Casos de ameloblastoma diagnosticados entre 1954 e 2009 em um único centro foram analisados quanto á idade, sexo, etnia, localização e tipo histológico. Os casos foram classificados de acordo com a classificação da OMS de 2005 de NOBs. Resultados: Foi realizada análise estatística descritiva dos dados com a determinação da freqüência das variáveis categóricas. Oitenta e nove casos de ameloblastomas foram diagnosticados: 78 casos corresponderam ao tipo sólido (88.6%), dois casos ao tipo desmoplásico (2.2%) e nove casos ao tipo unicístico (10.2%). Houve predomínio pelo gênero feminine (58.4%) e de etnia branca (62.9%). A maioria localizou-se na mandíbula (78.6%) e 40.2% ocorreram preferencialmente na terceira década de vida. Conclusão: Nossos achados estão de acordo com os achados realizados em outros estados do Brasil. Isto mostra que pode ocorrer uma influência geográfica sobre o perfil dos pacientes acometidos por ameloblastoma
    corecore