Evaluating Software-based Hardening Techniques for General-Purpose Registers on a GPGPU

Graphics Processing Units (GPUs) are considered a promising solution for high-performance safety-critical applications, such as self-driving cars. In this application domain, the use of fault tolerance techniques is mandatory to detect or correct faults, since they must work properly even in the presence of faults. GPUs are designed with aggressive technology scaling, which makes them susceptible to faults caused by radiation interference, such as the Single Event Upsets (SEUs), which can lead the system to fail, and that is unacceptable in safety-critical applications. In this paper, we evaluate different software-based hardening techniques developed to detect SEUs in GPUs general-purpose registers and propose optimizations to improve performance and memory utilization. The techniques are implemented in three case-study applications and evaluated in a general-purpose soft-core GPU based on the NVIDIA G80 architecture. A fault injection campaign is performed at register transfer level to assess the fault detection potential of the implemented techniques. Results show that the proposed improvements can be tailored for different scenarios, helping engineers in navigating the design space of hardened GPGPU applications

Analyzing the Sensitivity of GPU Pipeline Registers to Single Events Upsets

Graphics processing units are available solutions for high-performance safety-critical applications, such as self-driving cars. In this application domain, functional-safety and reliability are major concerns. Thus, the adoption of fault tolerance techniques is mandatory to detect or correct faults, since these devices must work properly, even when faults are present. GPUs are designed and implemented with cutting-edge technologies, which makes them sensitive to faults caused by radiation interference, such as single event upsets. These effects can lead the system to a failure, which is unacceptable in safety-critical applications. Therefore, effective detection and mitigation strategies must be adopted to harden the GPU operation. In this paper, we analyze transient effects in the pipeline registers of a GPU architecture. We run four applications at three GPU configurations, considering the source of the fault, its effect on the GPU, and the use of software-based hardening techniques. The evaluation was performed using a general-purpose soft-core GPU based on the NVIDIA G80 architecture. Results can guide designers in building more resilient GPU architectures

Global patient outcomes after elective surgery: prospective cohort study in 27 low-, middle- and high-income countries.

BACKGROUND: As global initiatives increase patient access to surgical treatments, there remains a need to understand the adverse effects of surgery and define appropriate levels of perioperative care. METHODS: We designed a prospective international 7-day cohort study of outcomes following elective adult inpatient surgery in 27 countries. The primary outcome was in-hospital complications. Secondary outcomes were death following a complication (failure to rescue) and death in hospital. Process measures were admission to critical care immediately after surgery or to treat a complication and duration of hospital stay. A single definition of critical care was used for all countries. RESULTS: A total of 474 hospitals in 19 high-, 7 middle- and 1 low-income country were included in the primary analysis. Data included 44 814 patients with a median hospital stay of 4 (range 2-7) days. A total of 7508 patients (16.8%) developed one or more postoperative complication and 207 died (0.5%). The overall mortality among patients who developed complications was 2.8%. Mortality following complications ranged from 2.4% for pulmonary embolism to 43.9% for cardiac arrest. A total of 4360 (9.7%) patients were admitted to a critical care unit as routine immediately after surgery, of whom 2198 (50.4%) developed a complication, with 105 (2.4%) deaths. A total of 1233 patients (16.4%) were admitted to a critical care unit to treat complications, with 119 (9.7%) deaths. Despite lower baseline risk, outcomes were similar in low- and middle-income compared with high-income countries. CONCLUSIONS: Poor patient outcomes are common after inpatient surgery. Global initiatives to increase access to surgical treatments should also address the need for safe perioperative care. STUDY REGISTRATION: ISRCTN5181700

Evaluating low-level software-based hardening techniques for configurable GPU architectures

The high processing power of GPUs makes them attractive for safety-critical applications, where transient effects are a major concern, and resilience must be enforced without compromising performance. Configurable softcore GPUs are a recent technology that allows detailed reliability assessment capable of bringing directions to the design of reliable GPU applications. This work investigates the reliability of the register files and the pipeline of a softcore GPU under radiation-induced faults. It proposes software-based fault tolerance techniques to mitigate errors. Faults are simulated at the register transfer level in four case-study algorithms, and the Architectural Vulnerability Factor (AVF) and Mean Workload to Failure (MWTF) are checked over different GPU configurations. Results indicate that software-based techniques efficiently reduce AVF. In terms of MWTF, results show that the best cases depend on an optimized balance between GPU configuration, application runtime, and AVF

Genome of Rhodnius prolixus, an insect vector of Chagas disease, reveals unique adaptations to hematophagy and parasite infection

O artigo apresenta nas duas primeiras páginas nota de correção.Submitted by sandra infurna ([email protected]) on 2016-03-31T12:56:45Z No. of bitstreams: 1 andre_torres_etal_IOC_2015.pdf: 1095119 bytes, checksum: df9054f950a043553746f4758ab01c35 (MD5)Approved for entry into archive by sandra infurna ([email protected]) on 2016-03-31T15:33:31Z (GMT) No. of bitstreams: 1 andre_torres_etal_IOC_2015.pdf: 1095119 bytes, checksum: df9054f950a043553746f4758ab01c35 (MD5)Made available in DSpace on 2016-03-31T15:33:31Z (GMT). No. of bitstreams: 1 andre_torres_etal_IOC_2015.pdf: 1095119 bytes, checksum: df9054f950a043553746f4758ab01c35 (MD5) Previous issue date: 2015Universidade Federal do Rio de Janeiro. Instituto de Química. Departamento de Bioquímica. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Simon Fraser University. Biological Sciences. Burnaby, BC, Canada.Universidad Nacional de La Plata. Centro Regional de Estudios Genomicos. La Plata, Argentina / Universidad Nacional del Noroeste de Buenos Aires. Centro de Bioinvestigaciones. Pergamino, Argentina.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.Universidade Federal do Rio de Janeiro. Instituto de Biologia. Departamento de Genética. Rio de Janeiro, RJ, Brasil.Universidad de la República. Facultad de Ciencias. Sección Genética Evolutiva. Montevideo, Uruguay.European Bioinformatics Institute. European Molecular Biology Laboratory. Welcome Trust Genome Campus. Hinxton, Cambridge, United Kingdom.Universidade Federal do Rio de Janeiro. Instituto de Química. Departamento de Bioquímica. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.University of Notre Dame. Department of Biological Sciences. Notre Dame, IN.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Estadual Paulista. Departamento de Biologia. São Paulo, SP, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.The Barcelona Institute of Science and Technology. Centre for Genomic Regulation. Barcelona, Spain / Universitat Pompeu Fabra. Barcelona, Spain.Institut de Recherche pour le Development. Centre National de la Recherche Scientifique. Laboratoire d`Evolution, Génome et Spéciation. Gif sur Yvette, France / Université Paris-Sud, Orsay, France.European Bioinformatics Institute. European Molecular Biology Laboratory. Welcome Trust Genome Campus. Hinxton, Cambridge, United Kingdom.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Université François Rabelais. Centre National de la Recherche Sicentifique. Institut de Recherche sur la Biologie de l`Insect. Tours, France.Université Paris-Sud, Orsay, France.Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP, CONICET). La Plata, Argentina.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Biologia. Departamento de Genética. Rio de Janeiro, RJ, Brasil.University of Toronto. Department of Biology. Mississauga, ON, Canada.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.Universidad Nacional de La Plata. Centro Regional de Estudios Genomicos. La Plata, Argentina.Centers for Disease Control and Prevention. Entomology Branch. Division of Parasitic Diseases and Malaria. Atlanta, GA, USA.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Biologia. Departamento de Genética. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.Universidade Estadual do Norte Fluminense Darcy Ribeiro. Centro de Biociências e Biotecnologia. Laboratório de Química e Função de Proteínas e Peptídeos. Campos de Goytacazes, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil /Universidade Federal do Rio de Janeiro. Faculdade de Farmácia. Departamento de Biotecnologia Farmacêutica. Rio de Janeiro, RJ, Brasil.Centers for Disease Control and Prevention. Entomology Branch. Division of Parasitic Diseases and Malaria. Atlanta, GA, USA.The Barcelona Institute of Science and Technology. Centre for Genomic Regulation. Barcelona, Spain / Universitat Pompeu Fabra. Barcelona, Spain.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.European Bioinformatics Institute. European Molecular Biology Laboratory. Welcome Trust Genome Campus. Hinxton, Cambridge, United Kingdom.Universidad Nacional de La Plata. Centro Regional de Estudios Genomicos. La Plata, Argentina.Universidade Federal do Rio de Janeiro. Instituto de Química. Departamento de Bioquímica. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil.Instituto Politécnico Nacional. Centro de Investigación y de Estudios Avanzados. oDepartment of Physiology, Biophysics and Neuroscience. Mexico City, Mexico.Universidade Federal de Minas Gerais. Instituto de Ciências Biológicas. Departamento de Fisiologia e BIoquímica. Belo Horizonte, MG, Brasil.Florida International University. Department of Biological Sciences. Miami, FL, USA.Florida International University. Department of Biological Sciences. Miami, FL, USA.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Ciências Biológicas e da Saúde. Departamento de Biologia Animal. Seropédica, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.University of Toronto. Department of Biology. Mississauga, ON, Canada.Universidad Nacional de La Plata. Centro Regional de Estudios Genomicos. La Plata, Argentina.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidad Nacional de La Plata. Centro Regional de Estudios Genomicos. La Plata, Argentina.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP, CONICET). La Plata, Argentina.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal de Minas Gerais.Instituto de Ciências Biológicas. Departamento de Parasitologia. Belo Horizonte, MG, Brasil.The John Hopkins University. Bloomberg School of Public Health. Deparment of Molecular Microbiology and Immunology. Baltimore, MD, USA.Instituto Federal de Educação Ciência e Tecnologia do Rio de Janeiro. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal do Espirito Santo. Núcleo de Doenças Infecciosas. Vitória, ES, Brasil.University of Illinois at Urbana–Champaign. Department of Entomology. Urbana, IL, USA.Instituto Federal de Educação Ciência e Tecnologia do Rio de Janeiro. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.The Barcelona Institute of Science and Technology. Centre for Genomic Regulation. Barcelona, Spain / Universitat Pompeu Fabra. Barcelona, Spain.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil./ Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal de Uberlândia. Faculdade de Computação. Instituto de Genética e Bioquímica. Laboratório de Bioinformática e Análises Moleculares. Uberlândia, MG, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, BrasilUniversidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, BrasilUniversity of Santiago de Compostela. Instituto de Investigaciones Sanitarias. School of Medicine– Center for Resesarch in Molecular Medicine and Chronic Diseases. Department of Physiology. Santiago de Compostela, Spain.Virginia Polytechnic Institute. Department of Biochemistry. Blacksburg, VA, USA.University of Cambridge. Deparment of Veterinary Medicine. Cambridge, United Kingdom.Simon Fraser University. Biological Sciences. Burnaby, BC, Canada.National Institutes of Health. National Institute of Allergy and Infectious Diseases. Section of Vector Biology. Rockville, MD, USA.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Estadual do Norte Fluminense Darcy Ribeiro. Centro de Biociências e Biotecnologia. Laboratório de Química e Função de Proteínas e Peptídeos. Campos de Goytacazes, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, BrasilEuropean Bioinformatics Institute. European Molecular Biology Laboratory. Welcome Trust Genome Campus. Hinxton, Cambridge, United Kingdom.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.University of Manitoba.Department of Biological Sciences. Winnipeg, MB, Canada.Centers for Disease Control and Prevention. Entomology Branch. Division of Parasitic Diseases and Malaria. Atlanta, GA, USA.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil..Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.University of Geneva Medical School. Department of Genetic Medicine and Development. Geneva 1211, Switzerland / Swiss Institute of Bioinformatics. Geneva 1211, Switzerland / Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory. Cambridge, MA, USA / The Broad Institute of MIT and Harvard. Cambridge, MA, USA.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.Fundação Oswaldo Cruz. Instituto Leônidas e Maria Deane. Grupo de Pesquisa em Ecologia de Doenças Transmissíveis na Amazônia. AM, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal de Uberlândia. Faculdade de Computação. Instituto de Genética e Bioquímica. Laboratório de Bioinformática e Análises Moleculares. Uberlândia, MG, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Ciências Biomédicas. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal de Minas Gerais. Instituto de Ciências Biológicas. Departamento de Parasitologia. Belo Horizonte, MG, Brasil.National Institutes of Health. National Center for Biotechnology Information. Rockville, MD, USA.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Ciências Médicas. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Química. Departamento de Bioquímica. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil.Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP, CONICET). La Plata, Argentina.Universidade Estadual Paulista. Departamento de Biologia. São Paulo, SP, Brasil.European Bioinformatics Institute. European Molecular Biology Laboratory. Welcome Trust Genome Campus. Hinxton, Cambridge, United Kingdom.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Universidade Estadual do Norte Fluminense Darcy Ribeiro. Centro de Biociências e Biotecnologia. Laboratório de Química e Função de Proteínas e Peptídeos. Campos de Goytacazes, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.The John Hopkins University. Bloomberg School of Public Health. Deparment of Molecular Microbiology and Immunology. Baltimore, MD, USA.University of Notre Dame. Department of Computer Science and Engineering. Notre Dame, IN.Universidad Nacional de La Plata. Centro Regional de Estudios Genomicos. La Plata, Argentina.Universidade Federal Rural do Rio de Janeiro. Instituto de Ciências Biológicas e da Saúde. Departamento de Biologia Animal. Seropédica, RJ, Brasil.Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública Sérgio Arouca. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Núcleo de Pesquisas Ecológicas de Macaé. Macaé, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Ciências Biomédicas. Rio de Janeiro, RJ, Brasil.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.Washington University School of Medicine. McDonnell Genome Institute. St. Louis, MO, USA.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Bioquímica Médica Leopoldo de Meis. Programa de Biologia Molecular e Biotecnologia. Rio de Janeiro, RJ, Brasil.Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Rhodnius prolixus not only has served as a model organism for the study of insect physiology, but also is a major vector of Chagas disease, an illness that affects approximately seven million people worldwide. We sequenced the genome of R. prolixus, generated assembled sequences covering 95% of the genome (∼702 Mb), including 15,456 putative protein-coding genes, and completed comprehensive genomic analyses of this obligate blood-feeding insect. Although immunedeficiency (IMD)-mediated immune responses were observed, R. prolixus putatively lacks key components of the IMD pathway, suggesting a reorganization of the canonical immune signaling network. Although both Toll and IMD effectors controlled intestinal microbiota, neither affected Trypanosoma cruzi, the causal agent of Chagas disease, implying the existence of evasion or tolerance mechanisms. R. prolixus has experienced an extensive loss of selenoprotein genes, with its repertoire reduced to only two proteins, one of which is a selenocysteine-based glutathione peroxidase, the first found in insects. The genome contained actively transcribed, horizontally transferred genes from Wolbachia sp., which showed evidence of codon use evolution toward the insect use pattern. Comparative protein analyses revealed many lineage-specific expansions and putative gene absences in R. prolixus, including tandem expansions of genes related to chemoreception, feeding, and digestion that possibly contributed to the evolution of a blood-feeding lifestyle. The genome assembly and these associated analyses provide critical information on the physiology and evolution of this important vector species and should be instrumental for the development of innovative disease control methods

Planning cancer control in Latin America and the Caribbean

Non-communicable diseases, including cancer, are overtaking infectious disease as the leading health-care threat in middle-income and low-income countries. Latin American and Caribbean countries are struggling to respond to increasing morbidity and death from advanced disease. Health ministries and health-care systems in these countries face many challenges caring for patients with advanced cancer: inadequate funding; inequitable distribution of resources and services; inadequate numbers, training, and distribution of health-care personnel and equipment; lack of adequate care for many populations based on socioeconomic, geographic, ethnic, and other factors; and current systems geared toward the needs of wealthy, urban minorities at a cost to the entire population. This burgeoning cancer problem threatens to cause widespread suffering and economic peril to the countries of Latin America. Prompt and deliberate actions must be taken to avoid this scenario. Increasing efforts towards prevention of cancer and avoidance of advanced, stage IV disease will reduce suffering and mortality and will make overall cancer care more affordable. We hope the findings of our Commission and our recommendations will inspire Latin American stakeholders to redouble their efforts to address this increasing cancer burden and to prevent it from worsening and threatening their societies.SCOPUS: re.jinfo:eu-repo/semantics/publishe

Global Survey of Outcomes of Neurocritical Care Patients: Analysis of the PRINCE Study Part 2

BACKGROUND: Neurocritical care is devoted to the care of critically ill patients with acute neurological or neurosurgical emergencies. There is limited information regarding epidemiological data, disease characteristics, variability of clinical care, and in-hospital mortality of neurocritically ill patients worldwide. We addressed these issues in the Point PRevalence In Neurocritical CarE (PRINCE) study, a prospective, cross-sectional, observational study. METHODS: We recruited patients from various intensive care units (ICUs) admitted on a pre-specified date, and the investigators recorded specific clinical care activities they performed on the subjects during their first 7 days of admission or discharge (whichever came first) from their ICUs and at hospital discharge. In this manuscript, we analyzed the final data set of the study that included patient admission characteristics, disease type and severity, ICU resources, ICU and hospital length of stay, and in-hospital mortality. We present descriptive statistics to summarize data from the case report form. We tested differences between geographically grouped data using parametric and nonparametric testing as appropriate. We used a multivariable logistic regression model to evaluate factors associated with in-hospital mortality. RESULTS: We analyzed data from 1545 patients admitted to 147 participating sites from 31 countries of which most were from North America (69%, N = 1063). Globally, there was variability in patient characteristics, admission diagnosis, ICU treatment team and resource allocation, and in-hospital mortality. Seventy-three percent of the participating centers were academic, and the most common admitting diagnosis was subarachnoid hemorrhage (13%). The majority of patients were male (59%), a half of whom had at least two comorbidities, and median Glasgow Coma Scale (GCS) of 13. Factors associated with in-hospital mortality included age (OR 1.03; 95% CI, 1.02 to 1.04); lower GCS (OR 1.20; 95% CI, 1.14 to 1.16 for every point reduction in GCS); pupillary reactivity (OR 1.8; 95% CI, 1.09 to 3.23 for bilateral unreactive pupils); admission source (emergency room versus direct admission [OR 2.2; 95% CI, 1.3 to 3.75]; admission from a general ward versus direct admission [OR 5.85; 95% CI, 2.75 to 12.45; and admission from another ICU versus direct admission [OR 3.34; 95% CI, 1.27 to 8.8]); and the absence of a dedicated neurocritical care unit (NCCU) (OR 1.7; 95% CI, 1.04 to 2.47). CONCLUSION: PRINCE is the first study to evaluate care patterns of neurocritical patients worldwide. The data suggest that there is a wide variability in clinical care resources and patient characteristics. Neurological severity of illness and the absence of a dedicated NCCU are independent predictors of in-patient mortality.status: publishe