Demetallization of Enterococcus faecalis biofilm: a preliminary study

Objectives To determine the concentration of calcium, iron, manganese and zinc ions after the application of chelator to Enterococcus faecalis biofilms. Material and Methods Fifty bovine maxillary central incisors were prepared and inoculated with E. faecalis for 60 days. The following were used as irrigation solutions: 17% EDTA (pH 3, 7 and 10), 2.5% sodium hypochlorite (NaOCl) combined with 17% EDTA (pH 3, 7 and 10), distilled water (pH 3, 7 and 10), and 2.5% NaOCl. Each solution was kept in the root canal for five minutes. Fifteen uncontaminated root canals were irrigated with 17% EDTA (pH 3, 7 and 10). Six teeth were used as bacterial control. The number of calcium, iron, manganese and zinc ions was determined using flame atomic absorption spectrometry. Mean ± standard deviation (SD) values were used for descriptive statistics. Results Calcium chelation using 17% EDTA at pH 7 was higher than at pH 3 and 10, regardless of whether bacterial biofilm was present. The highest concentration of iron occurred at pH 3 in the presence of bacterial biofilm. The highest concentration of manganese found was 2.5% NaOCl and 17% EDTA at pH 7 in the presence of bacterial biofilm. Zinc levels were not detectable. Conclusions The pH of chelating agents affected the removal of calcium, iron, and manganese ions. The concentration of iron ions in root canals with bacterial biofilm was higher after the use of 17% EDTA at pH 3 than after the use of the other solutions at all pH levels

Assimetrias e similaridades na produção de cavalos no sul do Brasil e Argentina: produtividade, aspectos sanitários e comerciais

This study was carried out in order to verify the asymmetries and similarities in horse breeding in the Brazilian South region and Argentina, analyzing the productive, health and trade aspects. Data collection were performed with questionnaires in fieldwork (primary sources) and bibliographic searches and surveys (secondary sources). The sample consisted of horses breeders in Brazil, Rio Grande do Sul State, and in Argentina. The questionnaire was based on the Brazilian Study of Horse Agribusiness Complex, divided into: Production Aspects, Health Issues and trade aspects. Descriptive data analysis and relative frequencies were compared using the chi-square (χ2 ) test at 5% probability. It was observed that there was a similarity in several aspects related to the breeding and trade horse agribusiness, whereas in the health aspects there was asymmetry in certain aspects. In the Southern Brazil, 29.0% of the owners live in the breeding farm and 67.7% have another remunerated activity. There was a similarity in the endoparasites system control and an asymmetry in the ectoparasites control. There was a higher percentage of diseases control in Argentina, which may be related to technification and qualification of workforce. However, regarding the equine sanitary control, there was a similarity between the farms of Southern Brazil and Argentina. Despite of all asymmetries and similarities, there is a relevance of horse agribusiness on generating jobs and income source, as well as the cultural and economic contribution in both countries. Furthermore, there is a necessity of public policies from government authority to promote the horse industry.O objetivo com este estudo foi observar as similaridades e asimetrias existentes na criação de cavalos no sul do Brasil e Argentina, a partir de análise dos aspectos produtivos, comerciais e da saúde dos equinos. A metodologia utilizada compreendeu levantamento de dados, através de aplicação de questionário a campo (fontes primárias) e pesquisas bibliográficas (fontes secundárias). A amostragem abrangeu criadores de equinos do Rio Grande do Sul e Argentina. O questionário foi elaborado baseado no Estudo do Complexo do Agronegócio Cavalo no Brasil, dividido em: Aspectos de Proodução, Sanitários e Comerciais. Foi realizada análise descritiva dos dados e as frequências relativas foram comparadas pelo teste Qui-quadrado (P<0,05). Observou-se similaridades nos aspectos relacionados à criação e comercialização, mas assimetria relacionada à saúde dos equinos. No sul do Brasil 29,0% dos proprietários vivem da criação de cavalos, enquanto 67,7% exercem outras atividades remuneradas. Observou-se similaridade no controle de endoparasitas e assimetria em relação à ectoparasitas. A alta percentagem de controle de doenças observada na Argentina pode estar relacionada à tecnificação e a mão de obra treinada. Contudo, observou-se similaridade entre as fazendas do sul do Brasil e Argentina em relação ao controle sanitário dos rebanhos de equinos. A respeito das diversas assimetrias e semelhanças observadas, destaca-se a importância do agronegócio cavalo na produção de emprego e renda, bem como a contribuição econômica e cultural para ambos os países. Além disso, há necessidade de políticas públicas para a promoção da indústria do cavalo.Instituto de Genética Veterinari

Ten-year follow-up of clinical governance implementation in primary care : Improving screening, diagnosis and control of cardiovascular risk factors

Altres ajuts: CAM was awarded a predoctoral scholarship from the Fundació Institut Universitari per a la Recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol) (http: //www.idiapjordigol.com/index.php/ca/) (7Z06/003).protective effect of having a cardiovascular event (hazard ratio (HR) = 0.64, 95% confidence interval (CI) = 0.44-0.94) or death (HR = 0.55, 95% CI = 0.35-0.88) was observed in patients from centres where general practitioners received high frequency feedback. Additionally, these PCCs presented improved cardiovascular health indicators and lower incidence and mortality by CVD, illustrating the impact of this intervention. Current improvement strategies for the control of cardiovascular risk factors (CRFs) in Europe are based on quality management policies. With the aim of understanding the effect of interventions delivered by primary healthcare systems, we evaluated the impact of clinical governance on cardiovascular health after ten years of implementation in Catalonia. A cohort study that included 1878 patients was conducted in 19 primary care centres (PCCs). Audits that comprised 13 cardiovascular health indicators were performed and general practitioners received periodic (annual, biannual or monthly) feedback about their clinical practice. We evaluated improvement in screening, diagnosis and control of the main CRFs and the effects of the feedback on cardiovascular risk (CR), incidence of cardiovascular disease (CVD) and mortality, comparing baseline data with data at the end of the study (after a 10-year follow-up). The impact of the intervention was assessed globally and with respect to feedback frequency. General improvement was observed in screening, percentage of diagnoses and control of CRFs. At the end of the study, few clinically significant differences in CRFs were observed between groups. However, the reduction in CR was greater in the group receiving high frequency feedback, specifically in relation to smoking and control of diabetes and cholesterol (Low Density Lipoprotein (LDL) and High Density Lipoprotein (HDL)). A

Microwave-assisted multicomponent synthesis of julolidines using silica-supported calix[4]arene as heterogeneous catalyst

The application of immobilizing calixarene onto the surface of silica using a sol-gel method, as an efficient heterogeneous catalyst (CX4SO3HSi(n)) for multicomponent Povarov reaction has been described. Catalytic activity of the CX4SO3HSi(n) for the synthesis of julolidines under greener and environmentally benign conditions in simple and efficient method was explored. Notably, only 0.5 mol% of the catalyst is sufficient to catalyze the Povarov solvent-free reaction under microwave-assistance. Besides, this protocol allows the construction of four new C-C bonds and two C-N bonds in a single step. To the best of our knowledge, this consists the first silica support calix[4]arene as a heterogeneous catalyst for multicomponent synthesis of julolidines.Fil: Ferreira de Paiva, Walysson. Universidade Federal de Viçosa. Departamento de Química.; BrasilFil: Bastos Braga, Ingredy. Universidade Federal de Viçosa. Departamento de Química.; BrasilFil: de Assis, João Vitor. Universidade Federal de Viçosa. Departamento de Química.; BrasilFil: Bonilla Castañeda, Sandra Milena. Universidade Federal de Viçosa. Departamento de Química.; BrasilFil: Sathicq, Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Palermo, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Romanelli, Gustavo Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Natalino, Ricardo. Universidade Federal de Viçosa. Departamento de Química.; BrasilFil: da Silva, Marcio José. Universidade Federal de Viçosa. Departamento de Química.; BrasilFil: Martins, Felipe Terra. Universidade Federal de Goiás; BrasilFil: de Carvalho, Gustavo Senra Gonçalves. Universidade Federal de Juiz de Fora; BrasilFil: Amarante, Giovanni Wilson. Universidade Federal de Juiz de Fora; BrasilFil: Fernandes, Sergio Antonio. Universidade Federal de Viçosa. Departamento de Química.; Brasi

Aplicaciones prácticas mediante entornos inteligentes con tecnología de control de movimiento para la adquisición de habilidades clínicas

Memoria ID-0023. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2015-2016

The chick embryo chorioallantoic membrane assay as a model for the study of angiogenesis

Angiogenesis is a fundamental physiological process with strong implications in tissue homeostasis. Animal models helping to identify how angiogenesis is regulated are fundamental to answer many biological questions. Chick embryo chorioallantoic membrane (CAM) assay is one of the most employed methods to study angiogenesis. In this study we applied a scientometric approach to evaluate the employment of CAM assay in published articles. Temporal trends indicated that CAM assay was the preferred method to investigate angiogenesis over time. The publications had a significant number of citations and the impact factor of journals publishing articles is relevant for the scientific community. A total of 52 different research areas have articles published using this particular technique. Oncology is the research field in which CAM assay was mostly used. Accordingly, tumor-derived cell lines were the most frequent sample tested on CAM. We also identified that 73,6% of articles published used only CAM assay to answer questions concerning angiogenesis. We concluded that although the CAM assay is a classical approach, that does not need so much infrastructure and financial support to be performed, it is a well-accepted technique by the scientific community. In addition, this methodology has gain attention in scientific community because no pain is experienced by the chick and they are minor ethical concerns to employ this method. Moreover, this data can help researchers who are unfamiliar with the CAM assay to identify if this particular method is suitable for their research

Epidemiology of Disappearing Plasmodium vivax Malaria: A Case Study in Rural Amazonia

Background: New frontier settlements across the Amazon Basin pose a major challenge for malaria elimination in Brazil. Here we describe the epidemiology of malaria during the early phases of occupation of farming settlements in Remansinho area, Brazilian Amazonia. We examine the relative contribution of low-density and asymptomatic parasitemias to the overall Plasmodium vivax burden over a period of declining transmission and discuss potential hurdles for malaria elimination in Remansinho and similar settings. Methods: Eight community-wide cross-sectional surveys, involving 584 subjects, were carried out in Remansinho over 3 years and complemented by active and passive surveillance of febrile illnesses between the surveys. We used quantitative PCR to detect low-density asexual parasitemias and gametocytemias missed by conventional microscopy. Mixed-effects multiple logistic regression models were used to characterize independent risk factors for P. vivax infection and disease. Principal Findings/Conclusions P. vivax prevalence decreased from 23.8% (March–April 2010) to 3.0% (April–May 2013), with no P. falciparum infections diagnosed after March–April 2011. Although migrants from malaria-free areas were at increased risk of malaria, their odds of having P. vivax infection and disease decreased by 2–3% with each year of residence in Amazonia. Several findings indicate that low-density and asymptomatic P. vivax parasitemias may complicate residual malaria elimination in Remansinho: (a) the proportion of subpatent infections (i.e. missed by microscopy) increased from 43.8% to 73.1% as P. vivax transmission declined; (b) most (56.6%) P. vivax infections were asymptomatic and 32.8% of them were both subpatent and asymptomatic; (c) asymptomatic parasite carriers accounted for 54.4% of the total P. vivax biomass in the host population; (d) over 90% subpatent and asymptomatic P. vivax had PCR-detectable gametocytemias; and (e) few (17.0%) asymptomatic and subpatent P. vivax infections that were left untreated progressed to clinical disease over 6 weeks of follow-up and became detectable by routine malaria surveillance

Termografia infravermelha na detecção de mastite clínica e subclínica em bovinos de leite: comparação entre as raças Girolando e Jersey

A mastite é uma das doenças mais comuns do gado leiteiro em todo o mundo, ocupando o primeiro lugar, com alta prevalência e incidência. Afeta a produção e a qualidade do leite, diminuindo o retorno econômico e a sustentabilidade da fazenda. A precocidade do diagnóstico e tratamento da mastite é de extrema importância, visando diminuir os danos, tanto para o animal quanto para o produtor e a indústria. A termografia infravermelha (TI) em animais é um método clinicamente útil para detectar alterações fisiopatológicas, por meio de variações térmicas, causadas pela inflamação. Este trabalho objetivou avaliar o potencial da técnica de TI para o diagnóstico de mastite clínica e subclínica em vacas Girolando e Jersey. Foram avaliados 78 quartos de vacas Girolando e 104 de Jersey pertencentes a propriedades rurais de Adamantina e região. As diferenças das intensidades das imagens por TI foram comparadas com as temperaturas do quarto anterior e posterior, em um único ponto central ou área, em relação aos resultados dos testes de Tamis e CMT. Todas as análises foram realizadas no Software R, sendo adotado um nível de significância igual a 5%. Quando a imagem termográfica foi avaliada, o tamanho do efeito foi significativo para raça e para o teste de CMT, porém não para o teste de Tamis. Em conclusão, a TI tem potencial no rastreamento de mastite subclínica nas raças avaliadas, com capacidade diagnóstica preditiva semelhante ao CMT, mas com diferença de temperatura entre elas, sendo equivalentes suas mensurações em ponto ou área da glândula mamária. Palavras-chave: diagnóstico; glândula mamária; imagem térmica; inflamação