Oral health of an indigenous population in northeastern Brazil: a cross-sectional Study of the Fulni-ô ethnic group

ABSTRACT BACKGROUND: There is a lack of studies evaluating the oral health of traditional indigenous communities in Brazil. OBJECTIVES: Thus, the objective of this study was to describe the oral health characteristics of the indigenous Fulni-ô ethnic group in Northeast Brazil. DESIGN AND SETTING: A cross-sectional observational investigation was conducted within the Project on Atherosclerosis among Indigenous Populations. METHODS: This study included participants of both sexes from the Fulni-ô ethnic group. The participants included in this investigation underwent a comprehensive oral health evaluation by a registered and experienced dentist to assess oral health and identify potentially malignant oral lesions. Participants with suspicious lesions were referred for biopsy. Shapiro-Wilk, Mann-Whitney, and Student's t-tests were used, and measures of central tendency and dispersion were described. Statistical significance was 5%. RESULTS: A total of 104 individuals were included in this study. The prevalence of the use of tobacco derivatives was 94.0%, with similarities between sexes. The prevalence of oral changes in this study population was 84.4%. Fifty-one individuals who underwent oral reassessment were referred for oral lesion biopsy. CONCLUSIONS: This study demonstrated a high prevalence of oral alterations in the Fulni-ô population. Histopathological analyses indicated the presence of mild oral epithelial dysplasia in five cases.

Temporal trend analysis of hospitalizations and in-hospital deaths due to female breast cancer in the state of Alagoas from 2009 to 2019: a cross-sectional study

ABSTRACT BACKGROUND: Breast cancer is a common neoplasm in women worldwide. Its varying patterns of incidence and clinical prognosis in Brazil make it an important and complex public health problem that needs to be solved. OBJECTIVES: To analyze the temporal dynamics of hospital admissions and deaths due to female breast cancer in the state of Alagoas, Brazil, from 2009 to 2019. DESIGN AND SETTING: Cross-sectional study including secondary data from hospital admissions and deaths due to female breast cancer in Alagoas. METHODS: A joinpoint regression model was constructed for temporal analysis of hospital admissions and deaths due to female breast cancer in Alagoas, over this period. The hospital information system of the Department of Informatics of the National Health System was used. RESULTS: There were 5,801 hospitalizations and 633 hospital deaths due to neoplasm in Alagoas over the period. The age group from 50 to 59 years old stood out, corresponding to 28.1% of hospitalizations and 31.1% of registered deaths. An increasing trend in the rate of hospital admissions was observed (average annual percentage change, AAPC = 14.0; P-value < 0.001), from 14.9/100,000 inhabitants in 2009 to 53.6 in 2019. There was a growth trend in the in-hospital mortality rate (AAPC = 19.8; P-value < 0.001), from 6.3% in 2009 to 11.0% in 2019. CONCLUSION: The results indicated an increasing trend of hospital admissions and mortality rates in the state of Alagoas, with a higher percentage of hospitalizations and deaths in the 50-59 age group.

Impact of Pectoralis Nerve Block (PECS) on postoperative pain in patients submitted to mastectomy with lymphadenectomy / Impacto do Bloqueio Peitoral (PEC) na dor pós-operatória em pacientes submetidos a mastectomia com linfadenectomia

ABSTRACT Objective: Breast cancer is the most common malignant neoplasm in women worldwide. Surgery has been traditional treatment and, generally, it´s mastectomy with lymphadenectomy, that can causes postoperative pain. Therefore, we seek to study regional anesthesic techniques that can minimize this effect, such as the interpectoral block (PECS). Methods: randomized controlled study with 82 patients with breast cancer who underwent mastectomy with lymphadenectomy from January 2020 to October 2021 in oncology hospital. Interventions: two randomized groups (control - exclusive general anesthesia and PECS group - received PECS block with levobupivacaine/ropivacaine and general anesthesia). We applied a questionnaire with Numeric Rating Scale for pain 24h after surgery. We used Shapiro-Wilk, Mann-Whitney and Chi-square tests, and analyzed the data in R version 4.0.0 (ReBEC). Results: in the PECS group, 50% were pain-free 24h after surgery and in the control group it was 42.86%. The majority who presented pain classified it as mild pain (VAS from 1 to 3) - (42.50%) PECS group and (40.48%) control group (p=0.28). Only 17.50% consumed opioids in the PECS group, similar to the control group with 21.43%. (p=0.65). There was a low rate of complications such as PONV in both groups. In the subgroup analysis, there was no statistical difference between the groups that used levobupivacaine or ropivacaine regarding postoperative pain and opioid consumption. Discussion: the studied group had a low rate of pain in the postoperative period and it influenced the statistical analysis. There wasn´t difference in postoperative pain in groups. Conclusion: was not possible to demonstrate better results with the association of the PECS block with total intravenous analgesia. Need further studies to assess the efficacy of the nerve block.

RESUMO Introdução: o câncer de mama é a neoplasia maligna mais comum em mulheres no mundo. A cirurgia tem sido o tratamento tradicional e, geralmente consiste em mastectomia com linfadenectomia, podendo causar dor pós-operatória. Por isso, buscamos estudar técnicas anestésicas regionais que possam minimizar esse efeito, como o bloqueio interpeitoral (PEC). Métodos: estudo controlado randomizado com 82 pacientes com câncer de mama submetidos à mastectomia com linfadenectomia de Janeiro de 2020 a Outubro de 2021, em hospital oncológico. Intervenções: dois grupos randomizados (controle - anestesia geral exclusiva e grupo PECS - anestesia geral e bloqueio PEC com levobupivacaína/ropivacaína). Aplicou-se um questionário com Escala Visual Analógica da dor 24h pós-cirurgia. Utilizamos os testes de Shapiro-Wilk, Mann-Whitney e Quiquadrado e analisamos os dados em R versão 4.0.0. Estudo registrado em Ensaios Clínicos Brasileiros (REBec). Resultados: no grupo PEC, 50% não apresentava dor 24 horas após a cirurgia enquanto no grupo controle, 42,86% negava quadro álgico. A maioria que apresentou dor classificou-a como dor leve (EVA de 1 a 3) - (42,50%) grupo PEC e (40,48%) controle (p=0,28). Apenas 17,50% consumiram opioides no grupo PEC, semelhante ao grupo controle com 21,43%. (p=0,65), (17,50%) grupo PEC e (21,43%) grupo controle (p=0,65). Houve baixo índice de complicações como PONV (náuseas, vômitos, cefaleia) em ambos os grupos. Na análise de subgrupo, não houve diferença estatística entre os grupos que usaram Levobupivacaína ou Ropivacaína quanto a dor pós-operatória e o consumo de opioides. Discussão: o grupo estudado apresentou baixa taxa de dor no pós-operatório e isso influenciou na análise estatística. Não houve diferença estatística quanto a dor pós-operatória entre grupos. Conclusão: não foi possível demonstrar melhores resultados com a associação do bloqueio PEC com analgesia intravenosa total. São necessários novos estudos para avaliar a eficácia do bloqueio anestésico no intraoperatório e pós-operatório.

Epidemiological, temporal and spatial dynamics of leprosy in a municipality in northeastern Brazil (2008-2017): an ecological study

Abstract INTRODUCTION: Leprosy is a chronic infectious disease caused by Mycobacterium leprae.This study aimed to analyze the epidemiological, temporal, and spatial dynamics ofleprosy in a municipality in northeastern Brazil. METHODS: This is an ecological study on new leprosy cases in the population of Arapiraca (Alagoas, Northeast Region, Brazil), from 2008 to 2017. Data extracted from a national database were analyzed forepidemiological indicators, factors associated with physical disabilities, and spatialanalysis in the neighborhoods of Arapiraca. RESULTS: A total of 292 new cases of leprosy were recorded, particularly occurring among the following groups: women, the age group of 46-59 years, brown-skinned individuals, people with less than eight years of schooling, and urban residents; the new cases were also predominantly the tuberculoid form and were of the paucibacillary classification of the disease. Almost 1/3 of the people had some degree of physical disability, which was mainly associated with the group 60 years of age and older, black ethnicity, and the multibacillary clinical form of leprosy. The joinpoint regression showed a stationary temporal behavior of indicators. There was a heterogeneous spatial distribution with active transmission areas, especially in the neighborhoods Primavera, Baixão, Ouro Preto, and downtown. CONCLUSIONS: The epidemiological indicators revealed complexity in the process of leprosy development. These spatial and temporal studies are relevant to help in the planning, monitoring, and guidance of interventions in the municipality. The spatial analysis showed heterogeneous distribution in the analyzed neighborhoods.

Schistosomiasis mansoni in the northeast region of brazil: temporal modeling of positivity, hospitalization,and mortality rates

Abstract INTRODUCTION We aimed to analyze trends in Schistosomiasis positivity, mortality, and hospitalization rates in Northeast Brazil. METHODS We conducted an ecological study using data from the Brazilian Schistosomiasis Control Program, and Hospital and Mortality Information Systems. A joinpoint regression model was used for temporal analysis. RESULTS The positivity(−4.7%;p<0.001) and hospitalization(−17.7%;p<0.001) rates declined globally, while the mortality remained stationary (−0.8%;p>0.05). However, the hospitalization in Alagoas(27.1%;p<0.001) and Pernambuco (35.1%;p<0.001), and the mortality in Bahia(2.9%;p<0.001) and Sergipe(4.1%;p<0.001), increased. CONCLUSIONS Schistosomiasis mansoni represents an important public health problem in Pernambuco, Alagoas, Sergipe, and Bahia.

Histopathological and immunohistochemical aspects of American cutaneous leishmaniasis before and after different treatments* / Aspectos histopatológicos e imuno-histoquímicos da leishmaniose tegumentar americana antes e depois de diferentes tratamentos

The histopathology and immune responses of the healing process of leishmaniasis are still poorly studied. This study aimed to examine the histopathological and immunological aspects of lesions of patients with cutaneous leishmaniasis before and after different therapeutic methods. We studied 23 individuals grouped according to the treatments: Glucantime, Glucantime + Leishvacin and Glucantime + Leishvacin associated with Bacillus Calmette-Guerin. For analysis of the histopathological changes present in the dermis and epidermis, histological sections were stained with hematoxylin and eosin. The samples were immunostained before and after treatment to analyze the expression of interferon (IFN)-γ, interleukin (IL) 12, IL-10 and IL-4. Before treatment the presence of intense infiltrates of mononuclear cells was noticed and after treatment, even with a diagnosis of clinical cure, the subjects still showed a moderate inflammatory process. In the immunohistochemical analyses, we noticed a difference between the cytokines, with increased expression of cytokines IFN-γ and IL-12 compared to IL 10 and IL-4, both before and after treatment and, comparatively, the difference in this expression was more intense before treatment. However, the cytokine expression analyzed by treatment group showed no statistically significant difference. We conclude that a clinical cure does not always coincide with the histopathological ...

A histopatologia e as respostas imunológicas do processo de cura da leishmaniose são ainda pouco estudadas. Este estudo teve como objetivo avaliar os aspectos histopatológicos e imunológicos das lesões de pacientes com leishmaniose tegumentar, antes e após diferentes métodos terapêuticos. Foram estudados 23 indivíduos agrupados de acordo com os tratamentos: Glucantime, Glucantime + Leishvacin e Glucantime + Leishvacin associado com Bacilo Calmette-Guerin. Para a análise das alterações histopatológicas presentes na derme e epiderme, cortes histológicos foram corados com hematoxilina e eosina. Para avaliar a expressão de interferon (IFN)-γ, interleucina (IL) 12, IL-10 e IL-4 foi utilizada a técnica de imuno-histoquímica antes e após o tratamento. Antes do tratamento houve um intenso infiltrado de células mononucleares, após o tratamento, mesmo com um diagnóstico de cura clínica, apresentou-se ainda um moderado processo inflamatório. Na análise imuno-histoquímica, notamos uma diferença entre as citocinas, com expressão aumentada de citocinas IFN-γ e IL-12 em comparação com IL-10 e IL-4 tanto antes quanto depois do tratamento, e comparativamente, a diferença nesta expressão mostrou-se mais intensa antes do tratamento. No entanto, a expressão das citocinas analisadas por grupo de tratamento não mostraram diferenças ...

OX40+ T lymphocytes and IFN-γ are associated with American tegumentary leishmaniasis pathogenesis / Linfócitos T OX40+ e IFN-γ estão associados com a patogênese da leishmaniose tegumentar americana

BACKGROUND: Leishmaniases are zoonoses considered a public health problem, representing a complex group of diseases with a broad clinical spectrum and epidemiological diversity. Leishmaniasis is caused by several species of protozoa of the genus Leishmania. The evolution of the pathology and the resolution of the leishmaniasis are dependent mainly on the Leishmania species involved, although the cytokine profile plays an important role in the development of the immune response. OBJECTIVES: The purpose of our study was to evaluate the immune response of patients affected by lesions of cutaneous leishmaniasis by immunostaining of the OX40, CD20, IFN-γ and IL-4 proteins. METHODS: The tissue samples were collected from indolent skin ulcers confirmed as cutaneous leishmaniasis of 41 patients aged between six and 90 years. The lesions were submitted to OX40, CD20, INF-γ and IL-4 immunolabeling. RESULTS: We observed a statistically significant higher expression of IFN-γ compared with IL-4 (p=0.009). Besides, OX40 had higher expression when compared with CD20 (p<0.001). CONCLUSION: The present study indicates that the immune response in lesions of cutaneous leishmaniasis is associated with a healing process, which can be explained by the higher expression of IFN-γ when compared with IL4 protein levels.

FUNDAMENTOS: As leishmanioses são zoonoses consideradas um problema de saúde pública, representando um grupo de doenças complexas, com uma diversidade de amplo espectro clínico e epidemiológico. A leishmaniose é uma doença causada por várias espécies de protozoários do gênero Leishmania spp. A evolução da patologia e a resolução da leishmaniose são dependentes principalmente da espécie de Leishmania envolvida; embora o perfil das citocinas tenha um importante papel no desenvolvimento da resposta imune. OBJETIVOS: Proporcionar mais conhecimentos sobre os eventos inflamatórios na leishmaniose tegumentar através da avaliação da imunoexpressão de OX40, CD20, IFN-γ e IL-4. MÉTODOS: Foram coletadas amostras de tecido de 41 pacientes, com idade variando entre 6 a 90 anos, com úlceras indolentes na pele confirmados através de exames de diagnóstico como leishmaniose tegumentar. As lesões foram submetidas a imunomarcação das proteínas OX40, CD20, IFN-γ e IL-4. RESULTADOS: Observamos uma maior expressão de IFN-γ em comparação com IL-4, com diferenças estatisticamente significativa (p = 0,009). Além disso, OX40 tinha maior expressão quando comparada com IL-4 (p <0,001). CONCLUSÃO: O presente estudo indica que a resposta imune nas lesões de LTA está associada a um processo de cura, que pode ser explicado pela maior expressão de IFN-γ quando comparadas com os níveis de IL-4.

Immunohistochemical profile of HIF-1α, VEGF-A, VEGFR2 and MMP9 proteins in tegumentary leishmaniasis / Estudo da expressão imunohistoquímica das proteínas HIF-1α, VEGF-A, VEGFR2 e MMP9 em leishmaniose tegumentar americana

BACKGROUND: Leishmaniasis is one of the most important infectious diseases worldwide. Our study can provide more knowledge about angiogenic and hypoxic events in leishmaniasis. We attempted to verify whether the HIF-1 α protein expression may be associated to VEGF-A, VEGFR2 and MMP9 in leishmanial lesions. OBJECTIVES: Besides understanding the pathway, we performed the correlation of VEGF-A, VEGFR2 and MMP9 proteins. METHODS: In this study, we gathered 54 paraffin blocks taken from skin lesions in patients from northern Minas Gerais, Brazil, with confirmed diagnosis of tegumentary leishmaniasis. Immunohistochemistry was used to evaluate the expression of the proteins. The expression of HIF-1α was categorized into two groups according to the median: HIF-1 α lower and HIF-1 α higher. RESULTS: We observed increase of VEGFR2 and MMP9 protein expressions in HIF-1 α higher group of epithelial cells. Spearman analyses in epithelial cells showed correlation between VEGF-A and MMP9, VEGFR2 and MMP9 protein expression. CONCLUSIONS: HIF-1 α higher group showed increase of VEGFR2 and MMP9 proteins. In epithelial cells, VEGF-A was correlated to MMP9 protein. Furthermore, considering leukocyte cells, VEGFR2 was negatively correlated to MMP9 protein levels. This pathway possibly prepares the cells for a higher activity in a hypoxic or an angiogenic microenvironment. Other in vitro and in vivo studies may clarify the activation mechanism and the response from the proteins HIF-1 α, VEGFR2 and MMP-9 in tegumentary leishmaniasis.

FUNDAMENTOS: A leishmaniose é uma das mais importantes doenças infecciosas em todo o mundo. Em leishmaniose, tem sido sugerido que muitas características da lesão está associado a eventos de hipóxia, podendo este ter um papel fundamental na evolução da doença. OBJETIVO: O presente estudo pode fornecer dados acerca do fenômeno hipóxia e da angiogênese em leishmaniose tegumentar americana. Buscou-se verificar se a expressão da proteína HIF-1 α associa-se à expressão das proteínas VEGF-A, VEGFR2 e MMP9 em lesões de Leishmania sp. MÉTODOS: Neste estudo retrospectivo, foram utilizados 54 blocos de parafina de lesões de leishmaniose tegumentar americana de pacientes do norte de Minas Gerais, Brasil, com diagnóstico confirmado de leishmaniose tegumentar americana. A técnica de imunohistoquimica foi utilizada para avaliação da expressão das proteínas. A expressão da HIF-1α foi categorizada em dois grupos de acordo com a mediana: HIF-1 α abaixo e HIF-1 α acima da mediana. RESULTADOS: Observamos aumento das expressões das proteínas VEGFR2 e MMP9 no grupo HIF-1 α acima da mediana. A análise de Spearman demonstrou correlação entre as proteínas VEGF-A e MMP9, VEGFR2 e MMP9. CONCLUSÃO: Os dados aqui apresentados indicam uma alta expressão da proteína HIF-1 α em LTA. O grupo HIF-1α acima da mediana apresentou maior expressão das proteínas VEGFR2 e MMP9. Foi demonstrada correlação entre as proteínas VEGF-A e MMP9, VEGFR2 e MMP9. Outros estudos in vitro e in vivo devem ser realizados a fim de esclarecer o mecanismo de ativação e resposta das proteínas HIF-1 α, VEGFR2 e MMP-9 em leishmaniose tegumentar americana.

Evaluation of myofibroblasts and its association with TGF-β and IFN-γ in lesions of patients with american tegumentary leishmaniasis / Avaliação de miofibroblastos e sua associação com TGF-β e IFN-γ em lesões de pacientes com leishmaniose tegumentar americana

BACKGROUND: Leishmaniasis is caused by protozoa of Leishmania spp. genus. It is transmitted by the bite of the sand fly insect. It is believed that 12 million people are infected with this disease and that its annual incidence is 2 million; this number is increasing. OBJECTIVES: The present study aimed to evaluate the expression of myofibroblasts through alpha smooth muscle actin labeling, and to analyze their relationship with the expression of the cytokines Interferon gama (IFN-γ) and Transforming growth factor beta (TGF-β1) in lesions of American tegumentary leishmaniasis (ATL). METHODS: For this retrospective study, we gathered 28 patients diagnosed with ATL between 2002 and 2006. We verified α-SMA positivity and performed IFN-γ and TGF-β1 immunolabeling to identify the profile of these cytokines in both positive and negative cases for myofibroblasts, via immunohistochemistry, in order to assess the presence of myofibroblasts,. RESULTS: We observed that out of the 28 cases, 17 (60.71%) were positive for alpha smooth muscle actin, while 11 (39.29%) were negative, and IFN-γ was more expressed than TGF-β1 (p=0.007). The mean percentages of expression of IFN-γ and TGF-β1 in the group negative for alpha smooth muscle actin were different, with an increased expression of IFN-γ (p=0.047). However, in the group positive for alpha smooth muscle actin, there was no difference in cytokine labeling (p>0.05). CONCLUSION: We verified the presence of positive α-SMA stromal cells in the majority of the cases of ATL, indicating the presence of myofibroblasts. In cases negative for alpha smooth muscle actin, an increased expression of IFN-γ compared to TGF-β1 was observed, revealing an inflammatory phase progressing to a healing process.

FUNDAMENTOS: A leishmaniose é causada pelo protozoário do gênero Leishmania spp., sendo transmitida via picada do inseto flebotomíneo. Estima-se que 12 milhões de indivíduos estejam infectados com a doença, sendo a incidência anual de 2 milhões, número este que tende a aumentar. OBJETIVOS: Avaliar a expressão de miofibroblastos através da imunomarcação de actina de músculo liso alfa, e analisar sua relação com a expressão de citocinas IFN-γ e TGF-β1 nas lesões de pacientes com leishmaniose tegumentar americana. MÉTODOS: Trata-se de um estudo retrospectivo, em que foram avaliados 28 pacientes diagnosticados com leishmaniose tegumentar americana durante o período de 2002 a 2006. Na técnica de imuno-histoquímica avaliou-se a presença de miofibroblastos, através do marcador actina de músculo liso alfa, além da imunomarcação do IFN-γ e TGF-β1 para identificar o perfil dessas citocinas nos casos positivos e negativos para miofibroblastos. RESULTADOS: Observou-se que dos 28 casos, 17 (60,71%) foram positivos para actina de músculo liso alfa, enquanto 11 (39,29%) foram negativos. IFN-γ teve uma maior expressão do que TGF-β1 (p=0,007). A porcentagem média de expressão de IFN-γ e TGF-β1 no grupo negativo para actina de músculo liso alfa foi diferente, apresentando uma maior expressão de IFN-γ (p=0.047). Entretanto, o grupo positivo para actina de músculo liso alfa não apresentou uma diferença estatisticamente significativa (p>0,05). CONCLUSÃO: Verificou-se uma expressão de actina de músculo liso alfa nos casos de leishmaniose tegumentar americana, indicando a presença de miofibroblastos. Nos casos negativos para actina de músculo liso alfa, observou-se uma maior expressão de IFN-γ comparando com TGF-β1, revelando que a fase inflamatória está envolvida no processo de cicatrização da lesão.

Field cancerization in head and neck squamous cell carcinoma: immunohistochemical expression of P53 and Ki67 proteins: clinicopathological study / Cancerização por campo em carcinoma de células escamosas: expressão imuno-histoquímica de proteínas p53 e Ki67: estudo clínico-patológico

OBJECTIVE: This study is aimed to evaluate the immunostaining influence of p53 and Ki67 proteins inareas of field cancerization of head and neck squamous cell carcinoma (HNSCC). We analyzed associationsof these proteins with clinicopathological parameters and the relation between their immunoexpression inHNSCC. MATERIAL AND METHOD: In a retrospecive analysis, 40 patients with HNSCC were selectedaccording to the recurrence of the disease, forming two groups: recurrent and non-recurrent HNSCC.Morphological gradations and imunnohistochemical analysis of p53 and Ki67 were performed in invasivefront and tumor adjacent epithelium. RESULTS: It was found significant associations between tumor recurrenceand p53 positivity in mucosa and invasive front. However, no association was found between p53immunostaining and the clinicopathological parameters. Ki67 was not related to any clinicopathologicalparameter either. The association between Ki67 and p53 expression was not significant. There was no significant inluence of recurrence in the clinicopathological parameters. Individuals with T1/T2 tumor size, non-recurrentand p53-negative in tumor adjacent epithelium presented better overall survival of HNSCC. CONCLUSION:p53 positivity in adjacent epithelium and invasive front of recurrent HNSCC is suggested in this study.

OBJETIVO: Avaliar a influência da imunoexpressão das proteínas p53 e Ki67 em áreas de campos de cancerização do carcinoma de células escamosas da cabeça e pescoço. Analisamos a associação dessas proteínas com parâmetros clínico-patológicos e a relação entre sua imunoexpressão.MATERIAL E MÉTODO: Em análise retrospectiva, 40 pacientes foram selecionados, de acordo com a recorrência da doença, formando dois grupos: com recorrência e sem recorrência da neoplasia. Gradações morfológicas e análises histoquímicas foram efetuadas na área de invasão e no epitélio adjacente ao tumor. RESULTADOS: Encontrou-se associações significativas entre a recorrência do tumor e positividade para p53 na mucosa e na área da lesão. Entretanto, não encontrou-se associação entre p53 e parâmetros clínico-patológicos. Ki67 não foi relacionada com qualquer parâmetro, igualmente. A associação entre expressão de Ki67 e p53 não foi significante e não houve influência significante de recorrência nos parâmetros clínico-patológicos. Indivíduos com tumores T1/T2, não recorrentes, e p53 negativos no epitélio adjacente ao tumor apresentaram melhor sobrevida à neoplasia. CONCLUSÃO: Positividade para p53 no epitélio adjacente e na área da neoplasia de carcinoma de células escamosas é sugerida por este estudo.

Prognostico valeu of intratumoral D57+T cells and microvessel density in head and neck squamous cell carcinoma / Valor prognóstico das células CD57+T e densidade dos microvasos no carcinoma de células escamosas de cabeça e pescoço

OBJECTIVES: This study aimed to examine the association of CD57+ T cells and MVD withclinical parameters and prognosis of HNSCC. MATERIAL AND METHOD: In a restrospectiveanalysis, 43 cases of primary HNSCC have been studied. We also analysed CD57 and CD31counting. T and N parameters was analized by Binary logistic regression analysis. Survival wasanalysed by Cox regression analysis. RESULTS: CD31 was not associated with anyclinicopathological parameters. CD57 immunoexpression was associated with locorregionalpresence. Cox regression test showed correlation of worse survival with locorregional metastasispresence. For binary logistic parameter, WHO Grade parameter was associated with smaller tumorsize and absent metastasis CD57+ T cells count was relationed with worse survival.CONCLUSION: There was no association between MVD and clinicopathological parameters.Locorregional metastasis presenting high CD57 positivity. No association was found betweenCD57 and the other clinicopathological parameters. Multivariate analysis showed that individualspresenting locorregional metastasis were associated with poor survival. CD57 count and WHOgrade were associated with larger tumor size.

OBJETIVO: Estudou-se a associação de células CD57+T e densidade microvascular comparâmetros clínicos e prognóstico do carcinoma de células escamosas de cabeça e pescoço(CCECP). MATERIAL E MÉTODO: Em análise retrospectiva, 43 casos de CCEP foramestudados. Analisamos também a contagem de CD57 e CD32. Os parâmetros T e N foramanalisados pela análise da regressão logística binária. A sobrevivência foi submetida a anális deregressão de Cox. RESULTADOS: CD31 não foi associada com nenhum parâmetroclinicopatológico. A imunoexpressão do CD57 associou-se com presença locorregional. O testede regressão de Cox demonstrou correlação entre pior sobrevivência com presença locorregionalde metástase. Para o parâmetro de logística binária, o parâmetro da OMS foi associado comtumores menores e ausência de metástases. A contagem das células CD57+ foi relacionada coma pior sobrevivência. CONCLUSÃO: Não houve associação entre microdensidade vascular eparâmetros clínico-patológicos. Metástases locorregionais apresentaram alta positividade paraCD57. Não foi encontrada associação entre CD57 e outros parâmetros clínico-patológicos. Análisemultivariada demonstrou que indivíduos apresentando metástases locorregionais apresentarampobre sobrevida. Contagem de CD57 e grau da OMS foram associados com tumores maiores.