Shape differences rather than size differences between castes in the Neotropical swarm-founding wasp Metapolybia docilis (Hymenoptera: Vespidae, Epiponini)

BACKGROUND: Swarm-founding epiponine wasps are an intriguing group of social insects in which colonies are polygynic (several queens share reproduction) and differentiation between castes is often not obvious. However, caste differences in some may be more pronounced in later phases of the colony cycle. RESULTS: Using morphometric analyses and multivariate statistics, it was found that caste differences in Metapolybia docilis are slight but more distinct in latter stages of the colony cycle. CONCLUSIONS: Because differences in body parts are so slight, it is proposed that such variation may be due to differential growth rates of body parts rather than to queens being larger in size, similar to other previously observed epiponines

Exceptional circumstance drug dispensing: history and expenditures of the Brazilian Ministry of Health

OBJECTIVE: To describe the technical aspects of the Exceptional Circumstance Drug Dispensing Program of the Brazilian Ministry of Health, especially with respect to the cost of dispensed medication. METHODS: Technical information was obtained from the ordinances that regulate the Program. Expenditure from 2000 to 2007 was obtained from the Sistema Único de Saúde's (Unified Healthcare System) Outpatient Information System. All drugs dispensed between 1993 and 2009 and the amount and cost of each procedure were evaluated, based on information from the high-complexity procedure authorization of each of the country's states. RESULTS: The Program changed with the increase in the number of pharmacological agents and presentations distributed by, and the number of diseases contemplated in the program. In 1993, the program distributed 15 pharmacological agents in 31 distinct presentations. This number increased to 109 agents in 243 presentations in 2009. Total Ministry of Health expenditure with medications was R$1,410,181,600.74 in 2007, almost twice the amount spent in 2000, R$684,975,404.43. Diseases whose expenditure increased in the period included chronic renal insufficiency, transplantation, and hepatitis C. CONCLUSIONS: The Exceptional Circumstance Drug Dispensing Program is in constant transformation, aimed at building instruments and strategies that can ensure and expand access to medication among the population. Alternatives should be sought to decrease the financial impact of the Program to a level that does not impact other sectors of the health care system, given the high cost associated with novel interventions.OBJETIVO: Describir aspectos técnicos del Programa de Medicamentos de Dispensación en Carácter Excepcional del Ministerio de Salud de Brasil, especialmente con relación a los gastos con los medicamentos distribuidos. MÉTODOS: Los aspectos técnicos fueron obtenidos por medio de consulta a todas los reglamentos que rigen el Programa. Gastos en el período de 2000 a 2007 fueron obtenidos del Sistema de Informaciones Ambulatorias del Sistema Único de Salud. Se analizaron los medicamentos dispensados de 1993 a 2009, cantidades y valor de cada procedimiento, informado en las autorizaciones de procedimientos de alta complejidad para cada estado. RESULTADOS: El Programa cambió, con aumento del número de fármacos y presentaciones farmacéuticas distribuidas y de enfermedades contempladas. Eran distribuidos 15 fármacos en 31 diferentes presentaciones farmacéuticas en 1993, pasando para 109 fármacos en 243 presentaciones en 2009. Los gastos totales del Ministerio de Salud con medicamentos sumaron, en 2007, R$1.410.181.600,74, casi el doble del valor gastado en el año 2000: R$ 684.975.404,43. Algunas enfermedades que representaron mayor gastos en ese período fueron: insuficiencia renal crónica, trasplante y hepatitis C. CONCLUSIONES: El Programa de Medicamentos de Dispensación en Carácter Excepcional está en constante transformación, buscando mejorar los instrumentos y estrategias que aseguren y amplíen el acceso de la población a los medicamentos. Se deben buscar alternativas para reducir el impacto financiero del Programa para que no exista prejuicio hacia las otras áreas del sistema de salud, dado el costo elevado de las nuevas tecnologías.OBJETIVO: Descrever aspectos técnicos do Programa de Medicamentos de Dispensação em Caráter Excepcional do Ministério de Saúde do Brasil, especialmente em relação aos gastos com os medicamentos distribuídos. MÉTODOS: Os aspectos técnicos foram obtidos por meio de consulta a todas as portarias que regulamentaram o Programa. Gastos no período de 2000 a 2007 foram obtidos do Sistema de Informações Ambulatoriais do Sistema Único de Saúde. Foram analisados os medicamentos dispensados de 1993 a 2009, quantidades e valor de cada procedimento informados nas autorizações de procedimentos de alta complexidade para cada estado. RESULTADOS: O Programa mudou, com aumento do número de fármacos e apresentações farmacêuticas distribuídas e de doenças contempladas. Eram distribuídos 15 fármacos em 31 diferentes apresentações farmacêuticas em 1993, passando para 109 fármacos em 243 apresentações em 2009. Os gastos totais do Ministério da Saúde com medicamentos somaram, em 2007, R$1.410.181.600,74, quase o dobro do valor gasto em 2000: R$ 684.975.404,43. Algumas das doenças que representaram maiores gastos nesse período foram: insuficiência renal crônica, transplante e hepatite C. CONCLUSÕES: O Programa de Medicamentos de Dispensação em Caráter Excepcional está em constante transformação, visando aprimorar os instrumentos e estratégias que assegurem e ampliem o acesso da população aos medicamentos. Devem-se buscar alternativas para reduzir o impacto financeiro do Programa para que não haja prejuízos às outras áreas do sistema de saúde, dado o custo elevado das novas tecnologias

Botulinum-A toxin injections into the detrusor muscle decrease nerve growth factor bladder tissue levels in patients with neurogenic detrusor overactivity

Purpose: We investigated the effects of BTX-A on visceral afferent nerve transmission by measuring bladder tissue NGF levels in patients with neurogenic detrusor overactivity before and after intravesical treatment with BTX-A. We also compared the bladder tissue NGF content with clinical and urodynamic data. Materials and Methods: A total of 23 patients underwent clinical evaluation and urodynamics with detection of the UDC threshold, maximum pressure and maximum cystometric capacity before, and at the 1 and 3-month followups. Endoscopic bladder Wall biopsies were also obtained at the same time points. NGF levels were measured in tissue homogenate by enzyme-linked immunosorbent assay (Promega, Madison, Wisconsin). Results: At 1 and 3 months mean catheterization and incontinent episodes were significantly decreased (p < 0.05 and < 0.001, respectively). On urodynamics we detected a significant increase in the UDC threshold and maximum cystometric capacity, and a significant decrease in UDC maximum pressure at the 1 and 3-month followups compared to baseline (each p < 0.001). At the same time points we detected a significant decrease in NGF bladder tissue content (each p < 0.02). Conclusions: BTX-A intravesical treatment induces a state of NGF deprivation in bladder tissue that persists at least up to 4 months. As caused by BTX-A, the decrease in acetylcholine release at the presynaptic level may induce a decrease in detrusor contractility and in NGF production by the detrusor muscle. Alternatively BTX-A can decrease the bladder level of neurotransmitters that normally modulate NGF production and release

Genetic diversity in soybean germplasm identified by SSR and EST-SSR markers.

Os objetivos deste trabalho foram avaliar a diversidade genética de 79 acessos de soja de diferentes regiões do mundo, agrupá-los de acordo com a similaridade e testar a correlação entre os dois tipos de marcadores utilizados. Foram utilizados marcadores microssatélites genômicos (SSR) e funcionais (EST-SSR). Trinta pares de primers SSR foram selecionados (20 genômicos e 10 EST-SSR) de acordo com sua distribuição nos 20 grupos de ligação da soja, com sua unidade de repetição trinucleotídica e com seu conteúdo de informação polimórfica. Todos os lócus analisados foram polimórficos, e 259 alelos foram encontrados. O número de alelos por lócus variou entre 2?21, com média de 8,63. Os acessos possuem uma quantidade significativa de alelos raros, sendo os acessos 19, 35, 63 e 65 os que apresentaram maior número de alelos exclusivos. Os acessos 75 e 79 são os mais similares e os acessos 31 e 35, e 40 e 78 são os mais divergentes. Foi observada baixa correlação entre resultados de SSR e EST-SSR. Portanto, uma análise adequada de diversidade em soja deve ser feita utilizando-se tanto marcadores microssatélites genômicos como funcionais. A diversidade genética dos acessos selecionados é alta, tendo sido encontrados cinco grupos e vários subgrupos. Observou-se moderada relação entre divergência genética e origem geográfica dos acessos

Neurofilaments in motor neuron disorders: towards promising diagnostic and prognostic biomarkers

Motor neuron diseases (MNDs) are etiologically and biologically heterogeneous diseases. The pathobiology of motor neuron degeneration is still largely unknown, and no effective therapy is available. Heterogeneity and lack of specific disease biomarkers have been appointed as leading reasons for past clinical trial failure, and biomarker discovery is pivotal in today’s MND research agenda. In the last decade, neurofilaments (NFs) have emerged as promising biomarkers for the clinical assessment of neurodegeneration. NFs are scaffolding proteins with predominant structural functions contributing to the axonal cytoskeleton of myelinated axons. NFs are released in CSF and peripheral blood as a consequence of axonal degeneration, irrespective of the primary causal event. Due to the current availability of highly-sensitive automated technologies capable of precisely quantify proteins in biofluids in the femtomolar range, it is now possible to reliably measure NFs not only in CSF but also in blood. In this review, we will discuss how NFs are impacting research and clinical management in ALS and other MNDs. Besides contributing to the diagnosis at early stages by differentiating between MNDs with different clinical evolution and severity, NFs may provide a useful tool for the early enrolment of patients in clinical trials. Due to their stability across the disease, NFs convey prognostic information and, on a larger scale, help to stratify patients in homogenous groups. Shortcomings of NFs assessment in biofluids will also be discussed according to the available literature in the attempt to predict the most appropriate use of the biomarker in the MND clinic

Study Of Closely Related Species Within The Physalaemus Cuvieri Group (anura): Contribution Of Microsatellite Markers.

Various species of the Physalaemus cuvieri group of frogs are difficult to distinguish morphologically, making molecular analysis an attractive alternative for indentifying members of this group, which is considered to be at risk because of loss of habitat. The genetic structure of natural populations of P. ephippifer and P. albonotatus species was investigated and analyzed, together with that of five previously studied populations of P. cuvieri. Nine microsatellite loci were used in the analyses. The overall G(ST) value (0.46) revealed high genetic variation among the populations, as expected for different species. Bayesian analysis implemented by the STRUCTURE software clustered the seven populations into seven groups (K = 7). All the P. albonotatus and P. ephippifer specimens were grouped into a single cluster, both species showing clear differentiation from P. cuvieri. The different grouping based on these microsatellites of some P. cuvieri individuals from Porto Nacional and from Passo Fundo suggests that they could be a new species, indicating a necessity for taxonomic reevaluation. Despite the intrinsic difficulties in analyzing closely related species, the nine microsatellite loci were found to be adequate for distinguishing these three species of the P. cuvieri group and their populations.101434-4

Permeability and hydraulic condictivity of faulted micashist in the Eastern Elba Island exhumed geothermal system (Tyrrhenian sea, Italy): insights from Cala Stagnone

Estimating values of permeability (k), ef cient porosity (P) and hydraulic conductivity (K) by analysing eld outcrops as analogue of geothermal reservoirs, is a timely theme useful for predictions during geothermal ex- ploration programs. In this paper we present a methodology providing k, P and K values, based on geomet- ric analysis of quartz-tourmaline faults-vein arrays hosted in micaschist exposed in south-eastern Elba Island (Tuscan Archipelago, Italy), considered as the analogue of rock hosting the so-called “deep reservoir” in the Larderello geothermal eld. The methodology is based on the integration among structural geology, uid inclu- sions results and numerical analyses. Through a detailed structural mapping, scan-lines and scan-boxes analy- ses, we have reconstructed three superposed faulting events, developed in an extensional setting and framed in the Neogene evolution of inner Northern Apennines. Geometrical data of the fault-veins array were processed by reviewing the basic parallel-plate-model-equation for k evaluation. Fluid inclusion analyses provided those salinity and pressure-temperature values necessary for de ning density and viscosity of the parent geothermal uids. Then, permeability, density and viscosity were joined to get hydraulic conductivity (K). Permeability is estimated between 5 × 10− 13 and 5 × 10− 17 m2 with variations among the different generation of faults, while the hydraulic conductivity is encompassed between 1.31 × 10− 8 and 2.4 × 10− 13 m/s. The obtained permeabil- ity and hydraulic conductivity values are comparable with those from several geothermal areas, and in particular from the Larderello geothermal eld. The main conclusion is that the proposed integrated approach provides a reliable methodology to obtain crucial values, normally obtained after drilling, for developing numerical ow models of geothermal uid path in active geothermal systems by eld and laboratory analyses of analogue, ex- humed, geothermal systems

Corrosion behaviour of aluminium alloy metal matrix composite joints obtained by FSW

It was studied the corrosion behaviour of two joints, obtained by Friction Stir Welding (FSW), of aluminium alloy metal matrix composites (MMCs), reinforced with alumina particles. W6A20A and W7A10A composite joints were examined. Corrosion tests were performed in EXCO or 3.5% NaCl solutions. The corrosion rates of MMCs and joints were compared. Corrosion tests were performed on both the nugget and the thermally affected zones of the joints. Pitting potentials were measured on electrodes prepared by isolating the different zones. Short-circuit currents were measured between the nugget, the thermally affected zone and the base. The results indicated the different behaviour of the two joints: the corrosive attack on the W7A10 joint was concentrated on the nugget and in its adjacent zones both in EXCO and 3.5% sodium chloride solution; in the case of W6A20A, the nugget remained protected while the adjacent zones and the base material were corroded. Electrochemical measurements confirmed these results.However, FSW, which produces welds without the formation of a fused zone, causes structural modifications in zones near the nugget, due to the higher temperature produced by the presence of the reinforcement. This negatively affects the corrosion resistance of the composite, also in relation to the base alloy composition