Assessment of environmental pollution and human health risks of mine tailings in soil: after dam failure of the Córrego do Feijão Mine (in Brumadinho, Brazil).

The dam failure of the Córrego do Feijão Mine (CFM) located in Minas Gerais State, Brazil, killed at least 278 people. In addition, large extensions of aquatic and terrestrial ecosystems were destroyed, directly compromising the environmental and socioeconomic quality of the region. This study assessed the pollution and human health risks of soils impacted by the tailing spill of the CFM dam, along a sample perimeter of approximately 200 km. Based on potential ecological risk and pollution load indices, the enrichments of Cd, As, Hg, Cu, Pb and Ni in soils indicated that the Brumadinho, Mário Campos, Betim and São Joaquim de Bicas municipalities were the most affected areas by the broken dam. Restorative and reparative actions must be urgently carried out in these areas. For all contaminated areas, the children's group indicated an exacerbated propensity to the development of carcinogenic and non-carcinogenic diseases, mainly through the ingestion pathway. Toxicological risk assessments, including acute, chronic and genotoxic effects, on people living and working in mining areas should be a priority for public management and mining companies to ensure effective environmental measures that do not harm human health and well-being over time.

Predictors of Mortality and Functional recovery after severe traumatic brain injury: protocol for a prospective cohort study

Introduction: traumatic brain injury is a global public health problem due to its severity and high rates of morbimortality worldwide. Identifying predictors associated with increased mortality and unfavorable functional outcomes after the traumatic brain injury event is crucial for minimizing morbidity and mortality rates. Therefore, this study aims to establish a protocol to investigate the predictors of mortality and functional recovery after severe traumatic brain injury in Brazil.Methods: The study will include all patients admitted for severe traumatic brain injury (Glasgow Coma Scale ≤ 8) at the State Hospital of Urgency and Emergency, which is the referral trauma hospital of Espirito Santo. The outcomes of interest are hospital mortality and functional recovery 24 months after hospital discharge. Subjects will be followed up at seventy-two hours, three months, six months, twelve months, and twenty-four months after the trauma. Morbidity will be determined by assessing: 1) the level of motor and cognitive disability, 2) functional impairment and quality of life, and 3) aspects of rehabilitation treatment. Additionally, the traumatic brain injury load, estimated by the years of life lost, will be calculated. Discussion: the results of this study will help identify variables that can predict morbidity and mortality, as well as diagnostic and therapeutic targets for patients with severe traumatic brain injury. Furthermore, the findings will have practical implications for: 1) the development of public policies, 2) investments in hospital infrastructure 3) understanding the socioeconomic impact of functional loss in the individuals.Study registration: the study received approval from the Ethics Committee of the Federal University of Espirito Santo under protocol number 4.222.002 on August 18, 2020.

Introdução: traumatismo cranioencefálico é um problema global de saúde pública devido à sua gravidade e altas taxas de morbimortalidade em todo o mundo. Identificar preditores associados ao aumento da mortalidade e desfechos funcionais desfavoráveis após o evento do traumatismo craniencefálico é primordial para minimizar as taxas de morbidade e mortalidade. Portanto, este estudo tem como objetivo estabelecer um protocolo para investigar os preditores de mortalidade e recuperação funcional após traumatismo cranioencefálico grave no Brasil. Métodos: este estudo tem como objetivo investigar os preditores de mortalidade e recuperação funcional em pacientes com traumatismo cranioencefálico, além de fornecer uma visão geral do traumatismo cranioencefálico no estado do Espírito Santo. O estudo abrangerá todos os pacientes internados por traumatismo cranioencefálico grave (Escala de Coma de Glasgow ≤ 8) no Hospital Estadual de Urgência e Emergência, o hospital de referência para traumas no Espírito Santo. Os desfechos de interesse incluem mortalidade hospitalar e recuperação funcional após 24 meses da alta hospitalar. Os participantes serão acompanhados em setenta e duas horas, três meses, seis meses, doze meses e vinte e quatro meses após o trauma. A morbidade será determinada pela avaliação de: 1) nível de incapacidade motora e cognitiva, 2) comprometimento funcional e qualidade de vida, e 3) aspectos do tratamento e reabilitação. Além disso, a carga de traumatismo cranioencefálico, estimada em anos de vida perdidos, será calculada. Discussão: os resultados deste estudo ajudarão a identificar variáveis que podem predizer a morbidade e a mortalidade após traumatismo cranioencefálico grave. Além disso, as descobertas terão implicações práticas para: 1) o desenvolvimento de políticas públicas, 2) investimentos em infraestrutura hospitalar e 3) compreensão do impacto socioeconômico da perda funcional nesses indivíduos. Registro do estudo: o estudo recebeu aprovação do Comitê de Ética da Universidade Federal do Espírito Santo sob o número de protocolo 4.222.002 em 18 de agosto de 2020

Morphological study on the effects of sample size on ovarian tissue vitrification.

OBJECTIVE: The present study aimed to assess the effects of ovarian cortex sample size on tissue morphological integrity after vitrification in a metal capsule. METHODS: Bovine ovarian tissue samples cut in large and small fragments (1x1x5 and 1x1x3 mm, respectively - 5 and 3 mm refer to length), vitrified in a metal capsule were fixed for histological analysis immediately after rewarming or after 48 hours culture. We assessed primordial, primary and secondary follicle morphology and stromal integrity. RESULTS: Primordial follicles showed the highest rates of normal morphology after rewarming and after 48 hours culture in both, small and large tissue fragments. Primary follicles presented a significant drop in normal morphology in large samples, after 48 hours in culture. Stromal integrity was well-preserved immediately after rewarming in small and large fragments but presented a significant drop in normal morphology in large samples, after 48 hours in culture. CONCLUSIONS: The ovarian reserve, represented by Primordial follicles, is well-preserved in small or large fragments, after vitrification and culture. However, the stromal components present better preservation after vitrification\rewarming, when tissue samples are cut in small fragments. Thus, small cortex samples should be preferred for ovarian tissue vitrification.

The effect of coffee consumption on glucose homeostasis and redox-inflammatory responses in high-fat diet-induced obese rats.

Coffee effects on glucose homeostasis in obesity remain controversial. We investigated whether coffee mitigates the negative effects on glucose metabolism induced by a high-fat diet and the interrelationships with redox-inflammatory responses. Rats were treated with: control (CT-); coffee (CT+) 3.9 g of freeze-dried coffee/kg of diet; high-fat (HF-); or high-fat + coffee 3.9 g of freeze-dried coffee/kg of diet (HF+) diet. The high-fat diet increased weight gain, feed efficiency, HOMA ß, muscle and hepatic glycogen, intestinal CAT and SOD activity, hepatic protein (CARB) and lipid oxidation (MDA), muscle Prkaa1 mRNA and IL6 levels, and decreased food intake, hepatic GR, GPX and SOD activities, intestinal CARB, intestinal Slc2a2 and Slc5a1 and hepatic Prkaa1 and Prkaa2 mRNA levels, hepatic glucose-6-phosphatase and muscle hexokinase (HK) activities, compared to the control diet. The high-fat diet with coffee increased hepatic GST activity and TNF and decreased IL6 and intestinal glucosidase activity compared with the high-fat diet. The coffee diet increased muscle glycogen, hepatic CARB and PEPCK activity, and decreased hepatic GR and SOD activities and intestinal CARB, compared with the control diet. Coffee increased insulin levels, HOMA IR/ß, FRAP, muscle Prkaa1 mRNA levels and hepatic and muscle phosphofructokinase-1, and it decreased intestinal CAT, hepatic Slc2a2 mRNA levels and muscle HK activity, regardless of the diet type. In conclusion, chronic coffee consumption improves antioxidant and anti-inflammatory responses, but does not ameliorate glucose homeostasis in a high-fat diet-induced obesity model. In addition, coffee consumption increases insulin secretion and promotes muscle glycogen synthesis in rats maintained on a control diet.

Gestação secundária à violência sexual infantojuvenil: percepções de profissionais de saúde / Pregnancy secondary to child sexual violence: perceptions of health professionals / Embarazo secundario a violencia sexual infantil: percepciones de los profesionales de la salud

Objetivo: Desvelar a percepção da equipe multiprofissional de saúde sobre a realidade social de crianças e adolescentes vitimizadas sexualmente. Método: Estudo de abordagem qualitativa, exploratório, desenvolvido com 30 profissionais da equipe multiprofissional de saúde de um hospital público da Bahia, no período entre os meses de junho à julho de 2019. As entrevistas foram gravadas, transcritas, interpretadas, categorizadas e analisadas com base no seu conteúdo, de acordo com Bardin, sob a luz do Interacionismo Simbólico. Resultados: Na percepção das profissionais do estudo, crianças e adolescentes de ambos os gêneros foram vitimizadas sexualmente, porém a maioria dos relatos remete a vítimas do sexo feminino. Na perspectiva das participantes, as vítimas pertenciam à a raça/cor negra e, no que tange a origem social, estavam submersas na pobreza e eram advindas de locais periféricos da capital do estado. A realidade social das vítimas infantojuvenis de violência sexual foi percebida mediante aproximação e interação das profissionais com as crianças/adolescentes e suas respectivas famílias durante o atendimento. Considerações finais: Crianças e adolescentes em vulnerabilidade social, que sofrem violência sexual, necessitam de um olhar sensível e holístico de profissionais de saúde, visto que demandam cuidados diferenciados, para fins de alcançar a integralidade na assistência. (AU)

Objective: To describe the perception of health professionals about pregnancy secondary to sexual violence against children and adolescents. Methods: This is an excerpt from an exploratory, qualitative study carried out between June and July 2019 with five women from the multidisciplinary team of a hospital in Bahia. The interviews were recorded, transcribed, analyzed and categorized according to Badin's assumptions and interpreted in the light of Symbolic Interactionism. Results: Pregnancy secondary to sexual violence results from early sexual initiation by imposition/induction of incestuous sexual abuse or child marriage with adult men. The maintenance of pregnancy resulting from these abuses is often imposed by persuading the victim to maintain the pregnancy, by late arrival at the health service and by procrastination in carrying out the termination of pregnancy, which are ways of restricting the autonomy of children/adolescents who seek legal abortion. Because of these injunctions, the victims suffer overlaps from injuries such as psychological violence, intimate partner violence and institutional violence. Conclusion: Pregnancy resulting from sexual violence against children and adolescents may be combined with other types of violence that restrict the sexual and reproductive rights of children and adolescents. (AU)

Objetivo: Describir la percepción de los profesionales de la salud sobre el embarazo secundario a violencia sexual contra niñas y adolescentes. Métodos: Este es un extracto de un estudio cualitativo exploratorio realizado entre junio y julio de 2019 con cinco mujeres del equipo multidisciplinario de un hospital de Bahía. Las entrevistas fueron grabadas, transcritas, analizadas y categorizadas según los supuestos de Badin e interpretadas a la luz del Interaccionismo Simbólico. Resultados: El embarazo secundario a violencia sexual es el resultado de la iniciación sexual temprana por imposición/inducción de abuso sexual incestuoso o matrimonio infantil con hombres adultos. El mantenimiento del embarazo derivado de estos abusos, muchas veces se impone persuadiendo a la víctima para que mantenga el embarazo, por la llegada tardía al servicio de salud y por la postergación en la realización de la interrupción del embarazo, que son formas de restringir la autonomía de las niñas/adolescentes que buscar un aborto legal. Debido a estas medidas cautelares, las víctimas sufren superposiciones de lesiones como violencia psicológica, violencia de pareja y violencia institucional. Conclusión: El embarazo resultante de violencia sexual contra niñas y adolescentes puede combinarse con otros tipos de violencia que restrinjan los derechos sexuales y reproductivos de niñas y adolescentes. (AU)

Potential of pineapple peel in the alternative composition of culture media for biosurfactant production.

The large pineapple's consumption and processing have generated a massive amount of waste yearly, which requires adequate treatment measures to avoid damages to the environment. Pineapple peel is one of the main residues obtained from this fruit and a promising strategy to take advantage of its potential is using it for biosurfactant production due to the peel's rich composition in fermentable sugars and nutrients, such as potassium and magnesium that favor the Bacillus subtilis growth and biosurfactant excretion as well. The current research performed a central composite design (CCD) with four independent variables (glucose, pineapple peel, potassium, and magnesium), evaluating substrates' influence on the surface tension reduction rate (STRR) and the emulsification index (EI24). The results indicated that pineapple peel has the necessary potential to act as a partial substitute for glucose and salt nutrients, minimizing the costs of supplementing with exogenous minerals. The highest surface tension reduction rate (57.744%) was obtained at 2.18% glucose (w/v); 14.67% pineapple peel (v/v); 2.38 g/L KH2PO4; and 0.15 g/L MgSO4.7H2O; whereas to obtain the maximum predicted value for EI24 (61.92%) the medium was composed by 2.24% glucose (w/v); 12.63% pineapple peel (v/v); 2.53 g/L KH2PO4; and 0.29 g/L MgSO4.7H2O.

The Action of JAK/STAT3 and BMP/HJV/SMAD Signaling Pathways on Hepcidin Suppression by Tucum-do-Cerrado in a Normal and Iron-Enriched Diets.

The Brazilian savanna fruit, tucum-do-cerrado (Bactris setosa Mart.) reduces hepatic hepcidin levels. Therefore, we investigated the effect of tucum-do-cerrado on the TfR/HFE and/or BMP/HJV/SMAD and JAK/STAT pathways, in normal and excess iron conditions. Rats were treated with: control diet (CT); control diet +15% tucum-do-cerrado (Tuc); iron-enriched diet (+Fe); or iron-enriched diet +15% tucum-do-cerrado (Tuc+Fe). Tucum-do-cerrado (Tuc) decreased hepatic Hamp and Hjv mRNA levels but did not alter Bmp6, Smad7, Tfr1, and Hfe mRNA levels; pSMAD1/5/8 and pSTAT3 protein levels; labile iron pool (LIP); and inflammatory biomarkers, compared to the CT group. The iron-enriched diet increased Hamp mRNA levels, as well as pSMAD1/5/8 and pSTAT3 protein levels, while no difference was observed in Hjv, Bmp6, Smad7, Tfr1, and Hfe mRNA levels and LIP compared to the CT group. The association of tucum-do-cerrado with the iron-enriched diet (Tuc+Fe) decreased Hamp, Hjv, Bmp6, and Hfe mRNA levels and pSTAT3 protein content compared to the +Fe group, while increased Hamp and decreased Hfe mRNA levels compared to the Tuc group. Therefore, the inhibition of hepatic hepcidin by tucum-do-cerrado consumption may involve the downregulation of intestinal Dmt1 and hepatic Hjv expression and deacetylation mediated by SIRT1 by a mechanism that is independent of tissue iron content. However, in excess iron conditions, the modulation of hepatic hepcidin expression by tucum-do-cerrado seems to be partially mediated by the inflammatory signaling pathway, as well as involves the chelating activity of tucum-do-cerrado.

New funding for a new Brazilian Primary Health Care. / Novo financiamento para uma nova Atenção Primária à Saúde no Brasil.

This paper aims to present a debate on the new Brazilian Primary Health Care (PHC) funding policy. We consulted the national and international literature, and we involved municipal, state, and federal PHC managers to develop the payment method. The proposed final model is based on weighted capitation, payment-for-performance, and incentive for strategic actions. Capitation is weighted by the socioeconomic vulnerability, demographic aspects, and municipal adjustment, the payment-for-performance consists of an entire set of 21 indicators, and incentives for strategic actions were facilitated from the maintenance of some specific programs. The results of the simulations pointed to low registration (90 million Brazilians) for the currently estimated coverage (148,674,300 Brazilians). Moreover, they showed an immediate increase in financial resources for 4,200 Brazilian municipalities. We observed that the funding proposal brings Brazilian PHC into the 21st century, points to the strengthening of PHC attributes, and materializes the principles of universality and equity of the Unified Health System.

O objetivo desse artigo é apresentar um debate sobre a nova política de financiamento para Atenção Primária à Saúde (APS) no Brasil. Para desenvolvimento do método de pagamento foi realizado consulta da literatura nacional e internacional, além do envolvimento de gestores municipais, estaduais e federais da APS. O modelo final proposto é baseado em Capitação ponderada; Pagamento por desempenho; Incentivo para Ações Estratégicas. A capitação é ponderada por vulnerabilidade socioeconômica, aspectos demográficos e ajuste municipal, o pagamento por desempenho composto por um conjunto total de 21 indicadores e incentivos a ações estratégicas foi possível a partir da manutenção de alguns programas específicos. Os resultados das simulações apontaram para um baixo cadastro (90 milhões de brasileiros) para a cobertura estimada atual (148.674.300 milhões de brasileiros). Além disso, demonstraram um incremento imediato de recursos financeiros para 4.200 municípios brasileiros. Observa-se que a proposta do financiamento traz a APS brasileira para o século XXI, aponta para o fortalecimento dos atributos da APS e torna concreto os princípios de universalidade e equidade do Sistema Único de Saúde.

Monitoring and evaluation of Primary Health Care attributes at the national level: new challenges. / Monitoramento e avaliação dos atributos da Atenção Primária à Saúde em nível nacional: novos desafios.

Five new challenges were brought to the federal management of SUS from the establishment of the Primary Health Care Secretariat (SAPS) in May 2019, as follows: a) to expand people's access to health facilities; b) to define a new financing model from health outcomes and efficiency; c) to define a new model of provision and training of family and community doctors for remote areas; d) to strengthen clinic and multi-professional teamwork; e) to expand computerization of health facilities and use of electronic medical records. This essay discusses these elements in light of a new evaluation model that also guides a new process of financing the Brazilian Primary Health Care (PHC). It builds on the correction of distributive distortions, and also seeks to guide greater effectiveness and efficiency in public investment and quality of service provided to the population. The proposal for a new PHC evaluation and financing model was elaborated through studies of the best international examples and discussion with representatives of the National Council of State Health Secretaries (CONASS) and the National Council of Municipal Health Secretaries (CONASEMS), and with technical support from the World Bank.

A partir da criação de uma Secretaria de Atenção Primária à Saúde (SAPS) no Ministério da Saúde em maio de 2019, cinco novos desafios foram trazidos para a gestão federal do SUS: a) ampliação do acesso da população às unidades de saúde da família, b) definição de um novo modelo de financiamento baseado em resultados em saúde e eficiência, c) definição de um novo modelo de provimento e formação de médicos de família e comunidade para áreas remotas, d) fortalecimento da clínica e do trabalho em equipe multiprofissional, e) ampliação da informatização das unidades de saúde e uso de prontuário eletrônico. Esse ensaio discute esses elementos à luz de um novo modelo avaliativo que, ao mesmo tempo, seja capaz de orientar o novo processo de financiamento da Atenção Primária à Saúde (APS) no Brasil. Este baseia-se na correção de distorções distributivas e também busca orientar maior efetividade e eficiência no investimento público e qualidade do serviço prestado à população. Através de estudos dos melhores exemplos internacionais e discussão com os representantes do Conselho Nacional de Secretários Estaduais de Saúde (CONASS) e do Conselho Nacional dos Secretários Municipais de Saúde (CONASEMS) e com apoio técnico do Banco Mundial, foi elaborada a proposta de novo modelo avaliativo e de financiamento da APS.

Novo financiamento para uma nova Atenção Primária à Saúde no Brasil / New funding for a new Brazilian Primary Health Care

Resumo O objetivo desse artigo é apresentar um debate sobre a nova política de financiamento para Atenção Primária à Saúde (APS) no Brasil. Para desenvolvimento do método de pagamento foi realizado consulta da literatura nacional e internacional, além do envolvimento de gestores municipais, estaduais e federais da APS. O modelo final proposto é baseado em Capitação ponderada; Pagamento por desempenho; Incentivo para Ações Estratégicas. A capitação é ponderada por vulnerabilidade socioeconômica, aspectos demográficos e ajuste municipal, o pagamento por desempenho composto por um conjunto total de 21 indicadores e incentivos a ações estratégicas foi possível a partir da manutenção de alguns programas específicos. Os resultados das simulações apontaram para um baixo cadastro (90 milhões de brasileiros) para a cobertura estimada atual (148.674.300 milhões de brasileiros). Além disso, demonstraram um incremento imediato de recursos financeiros para 4.200 municípios brasileiros. Observa-se que a proposta do financiamento traz a APS brasileira para o século XXI, aponta para o fortalecimento dos atributos da APS e torna concreto os princípios de universalidade e equidade do Sistema Único de Saúde.

Abstract This paper aims to present a debate on the new Brazilian Primary Health Care (PHC) funding policy. We consulted the national and international literature, and we involved municipal, state, and federal PHC managers to develop the payment method. The proposed final model is based on weighted capitation, payment-for-performance, and incentive for strategic actions. Capitation is weighted by the socioeconomic vulnerability, demographic aspects, and municipal adjustment, the payment-for-performance consists of an entire set of 21 indicators, and incentives for strategic actions were facilitated from the maintenance of some specific programs. The results of the simulations pointed to low registration (90 million Brazilians) for the currently estimated coverage (148,674,300 Brazilians). Moreover, they showed an immediate increase in financial resources for 4,200 Brazilian municipalities. We observed that the funding proposal brings Brazilian PHC into the 21st century, points to the strengthening of PHC attributes, and materializes the principles of universality and equity of the Unified Health System.

Monitoramento e avaliação dos atributos da Atenção Primária à Saúde em nível nacional: novos desafios / Monitoring and evaluation of Primary Health Care attributes at the national level: new challenges

Resumo A partir da criação de uma Secretaria de Atenção Primária à Saúde (SAPS) no Ministério da Saúde em maio de 2019, cinco novos desafios foram trazidos para a gestão federal do SUS: a) ampliação do acesso da população às unidades de saúde da família, b) definição de um novo modelo de financiamento baseado em resultados em saúde e eficiência, c) definição de um novo modelo de provimento e formação de médicos de família e comunidade para áreas remotas, d) fortalecimento da clínica e do trabalho em equipe multiprofissional, e) ampliação da informatização das unidades de saúde e uso de prontuário eletrônico. Esse ensaio discute esses elementos à luz de um novo modelo avaliativo que, ao mesmo tempo, seja capaz de orientar o novo processo de financiamento da Atenção Primária à Saúde (APS) no Brasil. Este baseia-se na correção de distorções distributivas e também busca orientar maior efetividade e eficiência no investimento público e qualidade do serviço prestado à população. Através de estudos dos melhores exemplos internacionais e discussão com os representantes do Conselho Nacional de Secretários Estaduais de Saúde (CONASS) e do Conselho Nacional dos Secretários Municipais de Saúde (CONASEMS) e com apoio técnico do Banco Mundial, foi elaborada a proposta de novo modelo avaliativo e de financiamento da APS.

Abstract Five new challenges were brought to the federal management of SUS from the establishment of the Primary Health Care Secretariat (SAPS) in May 2019, as follows: a) to expand people's access to health facilities; b) to define a new financing model from health outcomes and efficiency; c) to define a new model of provision and training of family and community doctors for remote areas; d) to strengthen clinic and multi-professional teamwork; e) to expand computerization of health facilities and use of electronic medical records. This essay discusses these elements in light of a new evaluation model that also guides a new process of financing the Brazilian Primary Health Care (PHC). It builds on the correction of distributive distortions, and also seeks to guide greater effectiveness and efficiency in public investment and quality of service provided to the population. The proposal for a new PHC evaluation and financing model was elaborated through studies of the best international examples and discussion with representatives of the National Council of State Health Secretaries (CONASS) and the National Council of Municipal Health Secretaries (CONASEMS), and with technical support from the World Bank.

Mycoremediation of vinasse by surface response methodology and preliminary studies in air-lift bioreactors.

This work evaluated the degradation of sugarcane vinasse with the production of biomass by Pleurotus sajor-caju CCB020, considering the combination of temperature and pH effects, using surface response methodology (RSM). A 22 complete central factorial composite experiment was used to analyze the results. The optimum temperature and pH values were respectively 27 °C and 5.6 for maximum decolorization yield and 20 °C and 6.8 for maximum biomass production. In parallel, scale-up experiments under conditions of 30 °C and initial pH 5.0 were evaluated in two different air-lift bioreactors of 7.0 L. Under these conditions, reductions of 53% and 58% in chemical oxygen demand (COD) and 71% and 58% in biological oxygen demand (BOD) were obtained respectively with the concentric tube type air-lift bioreactor with an increased degassing zone and without an increased degassing zone. Under these conditions, this study concluded that the systematic combination of P. sajor-caju and vinasse can be applied in the biodegradation process of refractory compounds contained in vinasse, concomitant to obtaining biomass and laccase and manganese peroxidase enzymes. Due to the good performance of the air-lift bioreactors, they can be used in scale studies in future industrial vinasse applications, besides it is possible to emphasize that different configurations in the bioreactor can affect the efficiency of the process.

Evaluation of a new strategy in the elaboration of culture media to produce surfactin from hemicellulosic corncob liquor.

The biosurfactant production is characterized by high costs with substrates, which does not make them sufficiently competitive against synthetic surfactants. The insertion of alternative sources of low cost, especially agro-industrial residue, is an excellent alternative to make this competitiveness viable. An alkaline pretreatment was used to extract the hemicellulose from corncob in order to enhance its C5 fraction, common to vegetable biomasses. The hemicellulosic corncob liquor was used with glucose and mineral salt solution as carbon and nutrients sources in a fermentation process for the growth of Bacillus subtilis. It was performed a 23 full factorial design to determine the best conditions for the surfactin production in relation to the following response variables: surface tension reduction rate (STRR) and emulsification index (EI24), from which were obtained two optimized bioproducts under specific conditions. The optimized biosurfactants found to be effected presenting a critical micelle concentration of 100 mg.L-1 and a maximum bioremediation potential of 85.18%, as well as maximum values of 57.38% and 65.30% for STRR and EI24 variables, respectively. Overall results pointed for a successful commercial application for the surfactin produced.

Uso de métodos anticoncepcionais por mulheres adolescentes de escola pública / Uso de métodos anticonceptivos en mujeres adolescentes de escuela pública / Use of contraceptive methods by adolescent women of a public school

RESUMO Objetivo: identificar o uso de métodos contraceptivos por adolescentes de uma escola pública do interior do Maranhão. Método: estudo de abordagem quantitativa, descritivo-exploratório, de corte transversal, realizadoentre os meses de novembro e dezembro de 2015, com adolescentes do ensino médio de uma escola publicado interior maranhense. Foi realizada a análise estatística descritiva dos dados. Resultados: das adolescentes, 199 (88,1%) referiram possuir informações sobre métodos contraceptivos, que foram obtidas principalmente com as mães, por 139 (69,8%). Das jovens que possuíam informações, 184 (92,5%) relataram conhecer a camisinha masculina. Das adolescentes que já tinham iniciado a vida sexual, algumas referiram não ter utilizado qualquer método, apesar das informações, e 59 (76,6%) jovens relataram ter utilizado a camisinha masculina. Conclusão: há necessidade de desenvolver constantemente ações de saúde, a fim de oportunizar que os adolescentes exerçam sua sexualidade de maneira mais segura, para evitar infecções sexualmente transmissíveis e gravidez não planejada.

RESUMEN Objetivo: Identificar el uso de métodos contraceptivos en adolescentes de una escuela pública del interior de Maranhão. Método: Estudio de abordaje cuantitativo, descriptivo-exploratorio, de corte transversal, realizado entre noviembre y diciembre de 2015 con adolescentes cursando enseñanza secundaria en escuela pública del interior de Maranhão. Se realizó análisis estadístico descriptivo de los datos. Resultados: Entre las adolescentes, 199 (81,1%) refirieron tener información sobre métodos anticonceptivos, transmitida especialmente por sus madres en 139 (69,8%) casos). De las jóvenes que tenían información, 184 (92,5%) expresó que conoce el preservativo masculino. De las adolescentes que habían iniciado su vida sexual, algunas manifestaron no haber utilizado ningún método, aún contando con información, y 59 (76,6%) jóvenes informaron haber utilizado preservativo masculino. Conclusión: Es necesario desarrollar constantemente acciones de salud buscando que los adolescentes ejerzan su sexualidad de manera más segura, para evitar infecciones sexualmente contagiosas y embarazos no planificados.

ABSTRACT Objective: to identify the use of contraceptive methods by adolescents of a public school in the state of Maranhão. Method: a quantitative, descriptive-exploratory, cross-sectional study was conducted between November and December 2015, with high school adolescents from a public school in the state of Maranhão. Descriptive statistical analysis of the data was performed. Results: of the adolescents, 199 (88.1%) reported having information on contraceptive methods, which was mainly obtained from their mothers, by 139 (69.8%). Of the young women who had information, 184 (92.5%) reported knowing about the male condom. Of the adolescents who had already started sexual activity, some reported not using any method, despite having the information, and 59 (76.6%) young women reported having used the male condom. Conclusion: there is a need to constantly develop health actions in order to allow adolescents to exercise their sexuality more safely, so they avoid sexually transmitted infections and unplanned pregnancies.

Chondrolysis of the hip in an adolescent: clinical and radiological outcomes.

Idiopathic chondrolysis of the hip is a rare condition of unknown etiology characterized by progressive destruction of the hyaline cartilage that covers the femoral head and acetabulum. Idiopathic chondrolysis of the hip has an insidious beginning and affects more often female adolescents. Patients report severe hip pain, mobility limitation, and even claudication. This study aimed at reporting one case of that rare disease: an 11-year-old female adolescent with chondrolysis, followed up for three years. Inflammatory activity tests were normal. Imaging tests (radiography, ultrasonography and magnetic resonance) were essential for the diagnosis. The treatment was based on pain control and preservation of the joint mobility, and included low-impact physical activity, non-steroidal anti-inflammatory drugs, and disease-modifying antirheumatic drugs, with good response after 12 months of treatment. Surgery was not necessary.

Condrólise de quadril em uma adolescente: evolução clínica e radiológica / Chondrolysis of the hip in an adolescent: clinical and radiological outcomes

A condrólise idiopática de quadril é uma condição rara, caracterizada por destruição progressiva da cartilagem articular da cabeça do fêmur e do acetábulo, sem etiologia conhecida. A CIQ tem início insidioso e acomete com maior frequência meninas na adolescência. Os pacientes apresentam dor intensa em quadril, restrição de movimentação e até claudicação. O objetivo do trabalho foi demonstrar um caso dessa doença rara: uma adolescente de 11 anos de idade, com condrólise, em acompanhamento por três anos. As provas de atividade inflamatória eram normais. Os exames de imagem (radiografia, ultrassonografia e ressonância magnética) foram essenciais para o diagnóstico. O tratamento baseou-se no controle da dor e preservação da mobilidade articular, incluindo atividades físicas de baixo impacto, anti-inflamatórios não hormonais e droga modificadora de doença, com boa resposta após um ano de tratamento. Intervenção cirúrgica não foi necessária.

Idiopathic chondrolysis of the hip is a rare condition of unknown etiology characterized by progressive destruction of the hyaline cartilage that covers the femoral head and acetabulum. Idiopathic chondrolysis of the hip has an insidious beginning and affects more often female adolescents. Patients report severe hip pain, mobility limitation, and even claudication. This study aimed at reporting one case of that rare disease: an 11-year-old female adolescent with chondrolysis, followed up for three years. Inflammatory activity tests were normal. Imaging tests (radiography, ultrasonography and magnetic resonance) were essential for the diagnosis. The treatment was based on pain control and preservation of the joint mobility, and included low-impact physical activity, non-steroidal anti-inflammatory drugs, and disease-modifying antirheumatic drugs, with good response after 12 months of treatment. Surgery was not necessary.

Blood-sucking lice may disseminate Trypanosoma cruzi infection in baboons

Trypanosoma cruzi (Schyzotrypanum, Chagas, 1909), and Chagas disease are endemic in captive-reared baboons at the Southwest Foundation for Biomedical Research, San Antonio, Texas. We obtained PCR amplification products from DNA extracted from sucking lice collected from the hair and skin of T. cruzi-infected baboons, with specific nested sets of primers for the protozoan kinetoplast DNA, and nuclear DNA. These products were hybridized to their complementary internal sequences. Selected sequences were cloned and sequencing established the presence of T. cruzi nuclear DNA, and minicircle kDNA. Competitive PCR with a kDNA set of primers determined the quantity of approximately 23.9 18.2 T. cruzi per louse. This finding suggests that the louse may be a vector incidentally contributing to the dissemination of T. cruzi infection in the baboon colony