Instituto Nacional do Cancer INCA

Rio de Janeiro, Brazil

Instituto Nacional do Cancer INCA

Rio de Janeiro, Brazil
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Siqueira-Batista R.,Federal University of Viçosa | Gomes A.P.,Federal University of Viçosa | Albuquerque V.S.,Centro Universitario Serra dos Orgaos | Cavalcanti F.O.L.,Instituto Nacional do Cancer INCA | Cotta R.M.M.,Federal University of Viçosa
Ciencia e Saude Coletiva | Year: 2013

The transformations that have revolutionized the labor market in contemporary society make it necessary to think of new alternatives for training health care professionals, thereby establishing a new approach to the health problems of individuals and collectives. Based on these considerations, this paper sets out to discuss training in health based on the concept of competence with a focus on education for the Brazilian Unified Health System (SUS), using attempts to analyze and propose an alternative to the system entrenched in the logic of late capitalism as a theoretical benchmark. It is thus a reflection on the subject, correlating theory and praxis, in constant and relentless movement of construction, deconstruction and (re)construction of propositions.

Victorino V.J.,University of Sao Paulo | Pizzatti L.,Instituto Nacional do Cancer INCA | Michelletti P.,West Parana State University | Panis C.,West Parana State University
Current Medicinal Chemistry | Year: 2014

Chemotherapy continues to be the main treatment option for cancer. Although systemic chemotherapy can efficiently eradicate cancer cells, a significant proportion of patients carry tumors that present a chemoresistant phenotype, resulting in disease progression, cancer relapse, and reduced survival. It has also become clear that the effect of most chemotherapeutic drugs is associated with their capacity to generate reactive species (RS) that bind to specific structures within the cancer cell and promote cell death. Due to repeated exposure to chemotherapeutic agents, the redox homeostasis of cancer cells is continuously disturbed, which can result in changes to the cell's ability to cope with excessive RS levels through the production of protective molecules. It is thought that the imbalance resulting from this process-oxidative stress-is toxic to cancer cells. Paradoxically, the metabolites produced during oxidative stress can favor the survival of some cancer subpopulations, which present specific gene signatures that confer a chemoresistant phenotype on these clones. Despite the huge amount of information generated by currently available technologies, we cannot predict whether this resistance will arise during chemotherapy and we still do not fully understand the mechanism by which it arises. In this review, we discuss the main findings regarding the role of oxidative stress signaling in cancer chemotherapy and the key redox molecules and pathways that lead to the development of chemoresistance. © 2014 Bentham Science Publishers.

Gusmao-Flores D.,Federal University of Bahia | Figueira Salluh J.I.,DOr Institute of Research and Education | Figueira Salluh J.I.,Instituto Nacional do Cancer INCA | Chalhub R.T.,Federal University of Bahia | Quarantini L.C.,Federal University of Bahia
Critical Care | Year: 2012

Introduction: Delirium is a frequent form of acute brain dysfunction in critically ill patients, and several detection tools for it have been developed for use in the Intensive Care Unit (ICU). The objective of this study is to evaluate the current evidence on the accuracy of the Confusion Assessment Method for Intensive Care Unit (CAM-ICU) and the Intensive Care Delirium Screening Checklist (ICDSC) for the diagnosis of delirium in critically ill patients.Methods: A systematic review was conducted to identify articles on the evaluation of the CAM-ICU and the ICDSC in ICU patients. A MEDLINE, SciELO, CINAHL and EMBASE databases search was performed for articles published in the English language, involving adult populations and comparing these diagnostic tools with the gold standard, the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria. Results were summarized by meta-analysis. The QUADAS scale was used to assess the quality of the studies.Results: Nine studies evaluating the CAM-ICU (including 969 patients) and four evaluating the ICDSC (n = 361 patients) were included in the final analysis. The pooled sensitivity of the CAM-ICU was 80.0% (95% confidence interval (CI): 77.1 to 82.6%), and the pooled specificity was 95.9% (95% CI: 94.8 to 96.8%). The diagnostic odds ratio was 103.2 (95% CI: 39.6 to 268.8). The pooled area under the summary receiver operating characteristic curve (AUC) was 0.97. The pooled sensitivity of the ICDSC was 74% (95% CI: 65.3 to 81.5%), and the pooled specificity was 81.9% (95% CI: 76.7 to 86.4%). The diagnostic odds ratio was 21.5 (95% CI: 8.51 to 54.4). The AUC was 0.89.Conclusions: The CAM-ICU is an excellent diagnostic tool in critically ill ICU patients, whereas the ICDSC has moderate sensitivity and good specificity. The available data suggest that both CAM-ICU and the ICDSC can be used as a screening tool for the diagnosis of delirium in critically ill patients. © 2012 Gusmao-Flores et al.; licensee BioMed Central Ltd.

Durso D.F.,Federal University of Minas Gerais | Bydlowski S.P.,University of Sao Paulo | Hutz M.H.,Federal University of Rio Grande do Sul | Suarez-Kurtz G.,Instituto Nacional do Cancer INCA | And 2 more authors.
PLoS ONE | Year: 2014

The Brazilian population was formed by extensive admixture of three different ancestral roots: Amerindians, Europeans and Africans. Our previous work has shown that at an individual level, ancestry, as estimated using molecular markers, was a poor predictor of color in Brazilians. We now investigate if SNPs known to be associated with human skin pigmentation can be used to predict color in Brazilians. For that, we studied the association of fifteen SNPs, previously known to be linked with skin color, in 243 unrelated Brazilian individuals self-identified as White, Browns or Blacks from Rio de Janeiro and 212 unrelated Brazilian individuals self-identified as White or Blacks from São Paulo. The significance of association of SNP genotypes with self-assessed color was evaluated using partial regression analysis. After controlling for ancestry estimates as covariates, only four SNPs remained significantly associated with skin pigmentation: rs1426654 and rs2555364 within SLC24A5, rs16891982 at SLC45A2 and rs1042602 at TYR. These loci are known to be involved in melanin synthesis or transport of melanosomes. We found that neither genotypes of these SNPs, nor their combination with biogeographical ancestry in principal component analysis, could predict self-assessed color in Brazilians at an individual level. However, significant correlations did emerge at group level, demonstrating that even though elements other than skin, eye and hair pigmentation do influence self-assessed color in Brazilians, the sociological act of self-classification is still substantially dependent of genotype at these four SNPs. © 2014 Durso et al.

Guimaraes R.M.,Federal University of Rio de Janeiro | Rocha P.G.M.,Federal University of Rio de Janeiro | Muzi C.D.,Federal University of Rio de Janeiro | Ramos R.S.,Instituto Nacional do Cancer INCa
Arquivos de Gastroenterologia | Year: 2013

Context - Several international studies have observed a correlation between the improvement of socio-demographic indicators and rates of incidence and mortality from cancer of the colon and rectum. Objective - The objective of this study is to estimate the correlation between average per capita income and the rate of colorectal cancer mortality in Brazil between 2001 and 2009. Methods - We obtained data on income inequality (Gini index), population with low incomes (1/2 infer the minimum wage/month), average family income, per capita ICP and mortality from colon cancer and straight between 2001-2009 by DATASUS. A trend analysis was performed using linear regression, and correlation between variables by Pearson's correlation coefficient. Results - There was a declining trend in poverty and income inequality, and growth in ICP per capita and median family income and standardized mortality rate for colorectal cancer in Brazil. There was also strong positive correlation between mortality from this site of cancer and inequality (men r = -0.30, P = 0.06, women r = -0.33, P = 0.05) income low income (men r = -0.80, P<0.001, women r = -0.76, P<0.001), median family income (men r = 0.79, P = 0.06, women r = 0.76, P<0.001) and ICP per capita (men r = 0.73, P<0.001, women r = 0.68, P<0.001) throughout the study period. Conclusion - The increase of income and reducing inequality may partially explain the increased occurrence of colorectal cancer and this is possibly due to differential access to food recognized as a risk factor, such as red meat and high in fat. It is important therefore to assess the priority of public health programs addressing nutrition in countries of intermediate economy, as is the case of Brazil.

De Oliveira Costa P.,Instituto Nacional do Cancer INCA | Atta E.H.,Instituto Nacional do Cancer INCA | da Silva A.R.A.,Federal University of Fluminense
Brazilian Journal of Infectious Diseases | Year: 2014

Background: Infection with Gram-negative bacteria is associated with increased morbidity and mortality. The aim of this study was to evaluate the predictors of 7- and 30-day mortality in pediatric patients in an intensive care unit with cancer and/or hematologic diseases and Gram-negative bacteria infection. Methods: Data were collected relating to all episodes of Gram-negative bacteria infection that occurred in a pediatric intensive care unit between January 2009 and December 2012, and these cases were divided into two groups: those who were deceased seven and 30 days after the date of a positive culture and those who survived the same time frames. Variables of interest included age, gender, presence of solid tumor or hematologic disease, cancer status, central venous catheter use, previous Pseudomonas aeruginosa infection, infection by multidrug resistant-Gram-negative bacteria, colonization by multidrug resistant-Gram-negative bacteria, neutropenia in the preceding seven days, neutropenia duration ≥3 days, healthcare-associated infection, length of stay before intensive care unit admission, length of intensive care unit stay >3 days, appropriate empirical antimicrobial treatment, definitive inadequate antimicrobial treatment, time to initiate adequate antibiotic therapy, appropriate antibiotic duration ≤3 days, and shock. In addition, use of antimicrobial agents, corticosteroids, chemotherapy, or radiation therapy in the previous 30 days was noted. Results: Multivariate logistic regression analysis resulted in significant relationship between shock and both 7-day mortality (odds ratio 12.397; 95% confidence interval 1.291-119.016; p= 0.029) and 30-day mortality (odds ratio 6.174; 95% confidence interval 1.760-21.664; p= 0.004), between antibiotic duration ≤3 days and 7-day mortality (odds ratio 21.328; 95% confidence interval 2.834-160.536; p= 0.003), and between colonization by multidrug resistant-Gram-negative bacteria and 30-day mortality (odds ratio 12.002; 95% confidence interval 1.578-91.286; p= 0.016). Conclusions: Shock was a predictor of 7- and 30-day mortality, and colonization by multidrug resistant-Gram-negative bacteria was an important risk factor for 30-day mortality. © 2014 Elsevier Editora Ltda.

De Oliveira Costa P.,Instituto Nacional Do Cancer INCA | Atta E.H.,Instituto Nacional Do Cancer INCA | Da Silva A.R.A.,Federal University of Fluminense
Jornal de Pediatria | Year: 2015

Objective This study aimed at evaluating the predictors and outcomes associated with multidrug-resistant gram-negative bacterial (MDR-GNB) infections in an oncology pediatric intensive care unit (PICU). Methods Data were collected relating to all episodes of GNB infection that occurred in a PICU between January of 2009 and December of 2012. GNB infections were divided into two groups for comparison: (1) infections attributed to MDR-GNB and (2) infections attributed to non-MDR-GNB. Variables of interest included age, gender, presence of solid tumor or hematologic disease, cancer status, central venous catheter use, previous Pseudomonas aeruginosa infection, healthcare-associated infection, neutropenia in the preceding 7 days, duration of neutropenia, length of hospital stay before ICU admission, length of ICU stay, and the use of any of the following in the previous 30 days: antimicrobial agents, corticosteroids, chemotherapy, or radiation therapy. Other variables included initial appropriate antimicrobial treatment, definitive inadequate antimicrobial treatment, duration of appropriate antibiotic use, time to initiate adequate antibiotic therapy, and the 7- and 30-day mortality. Results Multivariate logistic regression analyses showed significant relationships between MDR-GNB and hematologic diseases (odds ratio [OR] 5.262; 95% confidence interval [95% CI] 1.282-21.594; p = 0.021) and healthcare-associated infection (OR 18.360; 95% CI 1.778-189.560; p = 0.015). There were significant differences between MDR-GNB and non-MDR-GNB patients for the following variables: inadequate initial empirical antibiotic therapy, time to initiate adequate antibiotic treatment, and inappropriate antibiotic therapy. Conclusions Hematologic malignancy and healthcare-associated infection were significantly associated with MDR-GNB infection in this sample of pediatric oncology patients. © 2015 Sociedade Brasileira de Pediatria.

Moreira D.A.,Laboratorio Of Toxicologia Ambiental | Furtado C.,Instituto Nacional do Cancer INCA | Parente T.E.,Laboratorio Of Toxicologia Ambiental
Gene | Year: 2015

Mitochondrial genes and genomes have long been applied in phylogenetics. Current protocols to sequence mitochondrial genomes rely almost exclusively on long range PCR or on the direct sequencing. While long range PCR includes unnecessary biases, the purification of mtDNA for direct sequencing is not straightforward. We used total RNA extracted from liver and Illumina HiSeq technology to sequence mitochondrial transcripts from three fish (Ancistrus spp.) and assemble their mitogenomes. Based on the mtDNA sequence of a close related species, we estimate to have sequenced 92%, 95% and 99% of the mitogenomes. Taken the sequences together, we sequenced all the 13 protein-coding genes, two ribosomal RNAs, 22 tRNAs and the D-loop known in vertebrate mitogenomes. The use of transcriptomic data allowed the observation of the punctuation pattern of mtRNA maturation, to analyze the transcriptional profile, and to detect heteroplasmic sites. The assembly of mtDNA from transcriptomic data is complementary to other approaches and overcomes some limitations of traditional strategies for sequencing mitogenomes. Moreover, this approach is faster than traditional methods and allows a clear identification of genes, in particular for tRNAs and rRNAs. © 2015 Elsevier B.V.

The scope of this article is to identify and analyze the factors that influence the adoption of ICT tools in experiments with bioinformatics at the Brazilian Cancer Institute (INCA). It involves a descriptive and exploratory qualitative field study. Evidence was collected mainly based on in-depth interviews with the management team at the Research Center and the IT Division. The answers were analyzed using the categorical content method. The categories were selected from the scientific literature and consolidated in the Technology-Organization-Environment (TOE) framework created for this study. The model proposed made it possible to demonstrate how the factors selected impacted INCA's adoption of bioinformatics systems and tools, contributing to the investigation of two critical areas for the development of the health industry in Brazil, namely technological innovation and bioinformatics. Based on the evidence collected, a research question was posed: to what extent can the alignment of the factors related to the adoption of ICT tools in experiments with bioinformatics increase the innovation capacity of a Brazilian biopharmaceutical organization?

Domingues P.M.,Instituto Nacional Do Cancer INCA | Zylberberg R.,Instituto Nacional Do Cancer INCA | Da Matta De Castro T.,Instituto Nacional Do Cancer INCA | Baldotto C.S.,Instituto Nacional Do Cancer INCA | De Lima Araujo L.H.,Instituto Nacional Do Cancer INCA
Medical Oncology | Year: 2013

Combined chemoradiation (CRT) is the standard therapy in locally advanced non-small cell lung cancer (NSCLC). Nevertheless, the best approach in the elderly population is still poorly defined. We retrospectively reviewed the charts of elderly (≥65 years) patients with unresectable, locally advanced NSCLC, diagnosed at the Brazilian National Cancer Institute between 2003 and 2007. The primary outcome was overall survival (OS), measured from diagnosis until death. Palliative therapy (PT) included best supportive care radiation therapy (RT; ≤40 Gy) and palliative chemotherapy. Among patients treated with radical RT, OS was measured from date of treatment beginning until death (OST). One hundred seventy-one patients were included, with median age of 71 years (range 65-90). Thirty-nine percent received PT, 32 % exclusive RT (>40 Gy), and 29 % CRT (concomitant or sequential). Patients treated with RT and CRT had better OS (median 13.7 months [95 % CI 10.9-16.4] and 15.5 months [95 % CI 13.0-17.9]) than PT (median 4.1 months [95 % CI 3.6-4.6]; p < 0.0001). In the multivariate analysis, RT (HR 0.28 [95 % CI 0.18-0.42]; p < 0.0001) and CRT (HR 0.17 [95 % CI 0.1-0.27]; p < 0.0001) were independently correlated to better survival in comparison with PT. Among patients receiving radical RT, the addition of chemotherapy was correlated to longer OST (median 13.8 [95 % CI 10.6-17.0] vs. 10.8 months [95 % CI 8.6-13.1]; p = 0.018). This benefit was confirmed in the multivariate analysis (HR 0.59 [95 % CI 0.36-0.97]; p = 0.039). Elderly patients with locally advanced NSCLC derived significant survival benefit from radical RT and CRT, suggesting that age should not be a contraindication for these aggressive therapeutic strategies. © 2013 Springer Science+Business Media New York.

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