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Introdução:As síndromes linfoproliferativas formam um grupo heterogêneo de neoplasias malignas com diferentes comportamentos clínicos, fatores patológicos e características epidemiológicas e podem ter seu diagnóstico geral com base na morfologia das células linfoides observadas no sangue periférico. Objetivo: Testar a factibilidade diagnóstica do método de imunofenotipagem por citometria de fluxo para síndromes linfoproliferativas a partir da definição de um painel mínimo de anticorpos.

Gastric cancer (GC) is a worldwide health problem, making it one of the most common types of cancer, in fifth place of all tumor types, and the third highest cause of cancer deaths in the world. There is a subgroup of GC that consists of tumors infected with the Epstein–Barr virus (EBV) and is characterized mainly by the overexpression of programmed cell death protein-ligand-1 (PD-L1). In the present study, we present histopathological and survival data of a thousand GC patients, associated with EBV status and PD-L1 expression. Of the thousand tumors analyzed, 190 were EBV-positive and the vast majority (86.8%) had a high relative expression of mRNA and PD-L1 protein (p < 0.0001) in relation to non-neoplastic control. On the other hand, in EBV-negative samples, the majority had a low PD-L1 expression of RNA and protein (p < 0.0001). In the Kaplan–Meier analysis, the probability of survival and increased overall survival of EBV-positive GC patients was impacted by the PD-L1 overexpression (p < 0.0001 and p = 0.004, respectively). However, the PD-L1 low expression was correlated with low overall survival in those patients. Patients with GC positive for EBV, presenting PD-L1 overexpression can benefit from immunotherapy treatments and performing the quantification of PD-L1 in gastric neoplasms should be adopted as routine.

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Objetivo: o presente estudo tem por objetivo realizar uma análise do perfil espaço-temporal da hepatite B no estado do Pará, entre os anos de 2006 e 2018. Métodos: trata-se de um trabalho epidemiológico, ecológico e descritivo, realizado no estado do Pará por meio de seus municípios e regiões de saúde. A base de dados foi levantada perante consulta ao Departamento de Informática do SUS (DATASUS). Foram calculadas as variações percentuais anuais (APC) nas taxas de incidência de hepatite B, mediante a modelagem pelo método Jointpoint, usando o ano calendário como variável de regressão. Resultados: no estado do Pará, foram notificados, no período do estudo, 3,228 casos, sendo, 48,3% em homens e 51,7% em mulheres, com média de 248,3 casos por ano (61,8 de desvio padrão). A taxa de incidência média entre os anos de 2006 a 2018, nos 144 municípios no estado do Pará, obteve uma grande variação de 0 a 21,54 casos por 100.000 mil habitantes. Conclusão: apesar da dispersão nas taxas de incidência, obteve-se uma tendência crescente da ocorrência de casos de hepatite B no período estudado, sugerindo a necessidade de medidas de saúde pública mais eficazes no combate ao HBV

Human papillomavirus (HPV) is the most common sexually transmitted infection and occurs worldwide, especially in underdeveloped countries. It’s also strongly associated with cervical cancer. Papanicolaou test is an important tool for early diagnosis of such cancer. Hence, our objective is to evaluate women's knowledge about Pap smear, as well as about HPV transmission and clinical manifestations. This literature integrative review used the following research platforms: PubMed/Medline, SciELO and Virtual Health Library (BVS). Among the articles analyzed there were a total of 7,441 women, which mean age was over 16 years. Twenty percent of those had only high school education. Regarding knowledge about HPV, only 22% of the participants knew about it and 27% reported knowing about the Papanicolaou exam. It is concluded that socioeconomic factors are extremely relevant because they influence the incidence of HPV in society, emphasizing that knowledge about the Pap test and its purpose directly influences women’s acceptance to perform it.

Lipid-based nanoparticle systems have been used as vehicles for chemotherapeutic agents in experimental cancer treatments. Those systems have generally been credited with attenuating the severe toxicity of chemotherapeutic agents. This study aimed to investigate the effects of associating paclitaxel (PTX) with a lipid-based nanoparticle system on a nonhuman primate, Cebus apella , documenting the toxicity as measured by serum biochemistry, which is a detailed analysis of blood and tissue. Eighteen C. apella were studied: three animals were treated with cholesterol-rich nanoemulsion (LDE) only, without PTX, administered intravenously every 3 weeks, during six treatment cycles; six animals were treated with PTX associated with LDE at the same administration scheme, three with lower (175 mg/m 2 ) and three with higher (250 mg/m 2 ) PTX doses; and six animals were treated with commercial PTX, three with the lower and three with the higher doses. In the LDE-PTX group, no clinical toxicity appeared, and the weight–food consumption curve was similar to that of the controls. Two animals treated with commercial PTX presented weight loss, nausea and vomiting, diarrhea, skin flaking, 70% loss of body hair, and decreased physical activity. The use of LDE as a carrier at both lower and higher doses reduced the toxicity of the drug in this species, which is closely related to human subjects. This was observed not only by clinical, biochemical, and hematological profiles but also by the histopathological analysis. The results of this study support the assumption that lipid-based nanoparticle systems used as drug carriers can serve as valuable tools to decrease the toxicity and increase the safety of chemotherapeutic agents.