Improving allied health professionals' research implementation behaviours for children with cerebral palsy: protocol for a before-after study

BACKGROUND: Cerebral palsy is a permanent disorder of posture and movement caused by disturbances in the developing brain. It affects approximately 1 in every 500 children in developed countries and is the most common form of childhood physical disability. People with cerebral palsy may also have problems with speech, vision and hearing, intellectual difficulties and epilepsy. Health and therapy services are frequently required throughout life, and this care should be effective and evidence informed; however, accessing and adopting new research findings into day-to-day clinical practice is often delayed.

METHODS/DESIGN: This 3-year study employs a before and after design to evaluate if a multi-strategy intervention can improve research implementation among allied health professionals (AHPs) who work with children and young people with cerebral palsy and to establish if children's health outcomes can be improved by routine clinical assessment. The intervention comprises (1) knowledge brokering with AHPs, (2) access to an online research evidence library, (3) provision of negotiated evidence-based training and education, and (4) routine use of evidence-based measures with children and young people aged 3-18 years with cerebral palsy. The study is being implemented in four organisations, with a fifth organisation acting as a comparison site, across four Australian states. Effectiveness will be assessed using questionnaires completed by AHPs at baseline, 6, 12 and 24 months, and by monitoring the extent of use of evidence-based measures. Children's health outcomes will be evaluated by longitudinal analyses.

DISCUSSION: Government, policy makers and service providers all seek evidence-based information to support decision-making about how to distribute scarce resources, and families are seeking information to support intervention choices. This study will provide knowledge about what constitutes an efficient, evidence-informed service and which allied health interventions are implemented for children with cerebral palsy.

TRIAL REGISTRATION: Trial is not a controlled healthcare intervention and is not registered.

Perceção de risco no one-night stand – Um estudo com adultos emergentes

O presente trabalho teve como objetivos estudar o envolvimento dos estudantes universitários em sexo ocasional (one-night stand) compreendendo a rela��ão entre esta e as variáveis perceção de risco, riscos físicos, emocionais e psicológicos associados ao sexo ocasional e os fatores de influência associados ao envolvimento no mesmo. Neste estudo participaram 203 estudantes universitários, do 1o ciclo, pertencentes à Universidade de Évora, com idades compreendidas entre os 18 e os 25 anos (adultos emergentes). Os resultados obtidos sugerem que existe uma correla��ão significativa entre o envolvimento em sexo ocasional e a ausência de perceção de risco, porém existindo diferenças relativamente à mesma no momento do envolvimento em sexo ocasional e na fase posterior a este, revelando que antes e durante o comportamento os estudantes universitários não parecem percecionar os riscos reais, sendo que, em alguns casos, não utilizam estratégias para reduzir os mesmos. Esta perceção tardia dos possíveis riscos corridos, muitas vezes influenciada pelo consumo de bebidas alcoólicas, leva a um grande nível de arrependimento (principalmente nas mulheres). Sendo que o arrependimento traz aos indivíduos um sentimento de vazio, de rejeição, de perda, de desapontamento e perda de auto estima é de extrema importância perceber que impacto terão estes fatores no desenvolvimento dos adultos emergentes e no self de cada indivíduo. A partir dos resultados obtidos procuram retirar-se implicações para o trabalho no âmbito da prevenção e promoção da sa��de com estudantes universitários.

Main eigenvalues and (κ, τ)-regular sets

A (κ, τ)-regular set is a subset of the vertices of a graph G, inducing a κ-regular subgraph such that every vertex not in the subset has τ neighbors in it. A main eigenvalue of the adjacency matrix A of a graph G has an eigenvector not orthogonal to the all-one vector j. For graphs with a (κ, τ)-regular set a necessary and sufficient condition for an eigenvalue be non-main is deduced and the main eigenvalues are characterized. These results are applied to the construction of infinite families of bidegreed graphs with two main eigenvalues and the same spectral radius (index) and some relations with strongly regular graphs are obtained. Finally, the determination of (κ, τ)-regular sets is analyzed. © 2009 Elsevier Inc. All rights reserved.

Dissection of the early steps in the assembly of the 20S proteasome in Saccharomyces cerevisiae

Tese de dout., Bioquímica (Biologia Celular e Molecular), Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2010

Genetic structure at range edge: Low diversity and high inbreeding in Southeast Asian mangrove (Avicennia marina) populations

Understanding the genetic composition and mating systems of edge populations provides important insights into the environmental and demographic factors shaping species’ distribution ranges. We analysed samples of the mangrove Avicennia marina from Vietnam, northern Philippines and Australia, with microsatellite markers. We compared genetic diversity and structure in edge (Southeast Asia, and Southern Australia) and core (North and Eastern Australia) populations, and also compared our results with previously published data from core and southern edge populations. Comparisons highlighted significantly reduced gene diversity and higher genetic structure in both margins compared to core populations, which can be attributed to very low effective population size, pollinator scarcity and high environmental pressure at distribution margins. The estimated level of inbreeding was significantly higher in northeastern populations compared to core and southern populations. This suggests that despite the high genetic load usually associated with inbreeding, inbreeding or even selfing may be advantageous in margin habitats due to the possible advantages of reproductive assurance, or local adaptation. The very high level of genetic structure and inbreeding show that populations of A. marina are functioning as independent evolutionary units more than as components of a metapopulation system connected by gene flow. The combinations of those characteristics make these peripheral populations likely to develop local adaptations and therefore to be of particular interest for conservation strategies as well as for adaptation to possible future environmental changes.

Envolvimento dos Alunos na Escola: Conceito e Rela��ão com o Desempenho Académico — Sua Importância na Forma��ão de Professores

Este artigo é um produto do Projeto PTDC/CPE-CED/114362/2009 - Envolvimento dos Alunos na escola: Diferencia��ão e Promoção, financiado por Fundos Nacionais através da Funda��ão para a Ciência e Tecnologia (FCT), e coordenado por Feliciano Veiga.

Variation of the Group 5 Grass Pollen Allergen Content of Airborne Pollen in Relation to Geographical Location and Time in Season

Allergies to grass pollen are the number one cause of outdoor hay fever. The human immune system reacts with symptoms to allergens from pollen. Objective: We investigated the natural variability in release of the major group 5 allergen from grass pollen across Europe. Methods: Airborne pollen and allergens were simultaneously collected daily with a volumetric spore trap and a high-volume cascade impactor at 10 sites across Europe for 3 consecutive years. Group 5 allergen was determined with a Phl p 5 specific ELISA in two fractions of ambient air: Particulate Matter (PM) >10μm and 10μm>PM>2.5μm. Mediator release by ambient air was determined in Fc��R1-humanized basophils. Origin of pollen was modeled and condensed to pollen potency maps. Results: On average grass pollen released 2.3 pg Phl p 5/pollen. Allergen release per pollen (potency) varied substantially, ranging from 0 to 9 pg Phl p 5/pollen (5 to 95% percentile). The main variation was locally day-to-day. Average potency maps across Europe varied between years. Mediator release from basophilic granulocytes correlated better with allergen/m3 (r2=0.80, p<0.001) than with pollen/m3 (r2=0.61, p<0.001). In addition, pollen released different amounts of allergen in the nonpollen bearing fraction of ambient air depending on humidity. Conclusion: Across Europe, the same amount of pollen released substantially different amounts of group 5 grass pollen allergen. This variation in allergen release is on top of variations in pollen counts. Molecular aerobiology, i.e. determining allergen in ambient air, may be a valuable addition to pollen counting.

Relatório do workshop com representantes de associa��ões científicas

O Workshop SOCSCI decorreu no dia 26 de abril de 2012 no Instituto de Ciências Sociais da Universidade de Lisboa. Este evento está enquadrado no projeto SOCSCI – Sociedades científicas na ciência contemporânea financiado pela Funda��ão para a Ciência e a Tecnologia (PTDC/CS-ECS/101592/2008), em curso no Instituto de Ciências Sociais da Universidade de Lisboa, em colabora��ão com o SOCIUS-ISEG e CIES-IUL. Este projeto tem por objetivo compreender que papel desempenham as sociedades científicas na ciência contemporânea em Portugal. Organizado durante a fase final do projeto, este workshop teve o duplo objetivo de dar a conhecer os principais resultados às associa��ões que colaboraram no processo de investiga��ão e de fornecer um espa��o de discussão destes resultados e de troca de experiências entre os participantes Neste relatório serão apresentadas a estrutura de organiza��ão do evento, um resumo das intervenções dos participantes e as principais conclusões retiradas da discussão.

Curriculum and beyond: Mathematics support for first year life science students

The move into higher education is a real challenge for students from all educational backgrounds, with the adaptation to a new curriculum and style of learning and teaching posing a daunting task. A series of exercises were planned to boost the impact of the mathematics support for level four students and was focussed around a core module for all students. The intention was to develop greater confidence in tackling mathematical problems in all levels of ability and to provide more structured transition period in the first semester of level 4. Over a two-year period the teaching team for Biochemistry and Molecular Biology provided a series of structured formative tutorials and “interactive” online problems. Video solutions to all formative problems were made available, in order that students were able to engage with the problems at any time and were not disadvantaged if they could not attend. The formative problems were specifically set to dovetail into a practical report in which the mathematical skills developed were specifically assessed. Students overwhelmingly agreed that the structured formative activities had broadened their understanding of the subject and that more such activities would help. Furthermore, it is interesting to note that the package of changes undertaken resulted in a significant increase in the overall module mark over the two years of development.

Cork stoppers industry: defining appropriate mould colonization

Aims: The main aims of this work were the study of cork slabs moulds colonization and the evaluation of the moulds diversity during cork processing steps, in different cork stoppers factories. Simultaneously, it was envisaged to perform an evaluation of the air quality. Methods and Results: Moulds were isolated and identified from cork slabs and cork samples in four cork stoppers factories. The identification was based on morphological characters and microscopic observation of the reproductive structures. Airborne spore dispersion was assessed using a two stage Andersen sampler. It was observed that Chrysonilia sitophila was always present on cork slabs during the maturing period, but mould diversity appeared to be associated to the different factory configurations and processing steps. Conclusions: Spatial separation of the different steps of the process, including physical separation of the maturation step, is essential to guarantee high air quality and appropriate cork slabs colonization, i.e. C. sitophila dominance. The sorting and cutting of the edges of cork slabs after boiling and before the maturing step is also recommended. Significance and Impact of the Study: This study is very important for the cork stopper industry as it gives clear indications on how to keep high quality manufacturing standards and how to avoid occupational health problems.

Prevalência de obesidade infanto-juvenil : associa��ão com os hábitos alimentares, actividade física e comportamentos sedentários dos adolescentes escolarizados de Portugal Conti

RESUMO Nos pa��ses industrializados observam-se elevadas prevalências de pré- obesidade e obesidade em jovens e adolescentes, com consequências negativas para a sa��de. A obesidade é apontada como o distúrbio nutricional mais frequente em crianças e adolescentes nos pa��ses desenvolvidos e é resultado da acumula��ão excessiva ou anormal de gordura no tecido adiposo. Segundo a I.O.T.F. considera- se que uma criança tem pré-obesidade quando o seu percentil de I.M.C. está entre o p88 e p99 para as raparigas e entre o p90 e o p99 para os rapazes. Considerase que tem obesidade quando o percentil de I.M.C. é superior ao p99, para ambos os sexos. A prevalência de pré-obesidade e obesidade em crianças e adolescentes tem vindo a aumentar a nível mundial a um ritmo alarmante, sobretudo nos pa��ses desenvolvidos e em alguns segmentos de pa��ses em desenvolvimento. Estudos demonstram que a obesidade em crianças e adolescentes se encontra fortemente correlacionada com o aumento da morbilidade e mortalidade, reflectindo-se numa variedade de situa��ões patológicas com risco de persistência no adulto. Dada a sua extrema importância em termos de Sa��de Pública, as tendências para a pré- obesidade e obesidade em crianças e adolescentes devem ser monitorizadas com especial atenção. Os hábitos alimentares e o gasto energético são factores que influenciam a obesidade e o seu controlo. Há estudos que concluem que existe uma associa��ão directa entre estes factos e a presença de obesidade e outros apresentam conclusões contrárias. Pretendeu-se determinar a prevalência de excesso de peso (pré-obesidade e obesidade) infantojuvenil em Portugal e associá-la com os hábitos alimentares, actividade física e comportamentos sedentários dos adolescentes. A popula��ão em estudo é todos os adolescentes, de ambos os sexos, que frequentam o ensino básico (2º e 3º ciclos) e secundário oficial de Portugal Continental (n=5708). Todos os elementos em estudos foram avaliados antropometricamente (peso e altura) e responderam a um questionário de hábitos alimentares e frequência alimentar, actividade física e comportamentos sedentários. Como resultados do estudo verificou-se que a prevalência de pré- obesidade infanto-juvenil em Portugal é de 22,6% e a prevalência de obesidade de 7,8%. Quer a obesidade quer a pré-obesidade apresentam indicadores superiores nos rapazes (p=0,01) e nos adolescentes mais jovens (p=0,00). Em rela��ão aos hábitos alimentares estudados é de referir que a frequência de consumo de refeições fora de casa é muito similar entre o grupo normoponderal e o grupo com excesso de peso sendo a refeição da ceia consumida por um número muito superior de adolescentes normoponderais comparativamente com os que apresentam excesso de peso (p=0,01). Em rela��ão à ingestão de determinados alimentos ou grupos alimentícios, verificou-se que, regra geral, o consumo de alimentos de características nutricionais de baixa qualidade (gordura saturada, sal e a��ucares simples) era superior no grupo normoponderal comparativamente ao grupo com excesso de peso (refrigerantes, snacks, fast-food, cereais a��ucarados, sobremesas doces) (p<0,05). Em rela��ão à actividade física, o número de horas semanais de actividade física diminui do grupo normoponderal para o grupo com excesso de peso. Dentro do grupo com excesso de peso, os obesos apresentam ainda uma média inferior em rela��ão aos pré-obesos. Poderemos afirmar que quanto maior o índice de actividade física menor o percentil de I.M.C., mostrando-se assim a actividade física como um factor protector de um peso saudável (p<0,05). Quando solicitado que caracterizassem o estilo de vida e a habilidade desportiva, verificou-se que nos grupos com excesso de peso se caracterizavam em indicadores mais baixos do que os normoponderais (p<0,05). No que diz respeito aos comportamentos sedentários, verifica-se que são mais prevalentes nos grupos com excesso de peso do que no grupo normoponderal (p<0,05). Em conclusão, os resultados da prevalência de obesidade obtidos assemelham-se aos resultados obtidos noutros estudos, constituindo um dado revelador de uma situa��ão bastante preocupante em termos de Sa��de Pública. Em rela��ão aos hábitos alimentares as diferenças não são significativas entre os diferentes grupos (normoponderal, pré-obesidade e obesidade). A actividade física apresentou-se como um factor protector do aumento de peso com uma associa��ão directa com o estado nutricional (I.M.C.). Verificou-se que os adolescentes em Portugal que apresentavam indicadores mais elevados de actividade física eram aqueles que se encontravam com peso normal. Os comportamentos sedentários apresentaram-se como um factor propício ao desenvolvimento do excesso de peso estando directamente relacionados com o percentil de I.M.C. Os comportamentos sedentários mais frequentes são o visionamento televisivo e o computador/internet. Assim, poder-se-á fundamentar a necessidade de medidas interventivas a este nível com o intuito de controlar os indicadores encontrados. ABSTRACT In the industrialized countries high prevalences of pre-obesity and obesity are observed in youngsters and adolescents, with negative health consequences. Obesity is pointed as the most frequent nutritional disturbance in children and adolescents in developed countries and results from the excessive or abnormal accumulation of fat in the adipose tissue. According to the IOTF a child is pre-obese when the BMI percentile is between p88 and p99 for girls and between p90 and p99 for boys. Obesity is considered when the BMI percentile is above p99 for both sexes. The prevalence of pre-obesity and obesity in children and adolescents has been rising alarmingly worldwide, especially in developed countries and some segments of developing countries. Studies indicate that obesity in children and adolescents is strongly associated with increased morbidity and mortality resulting in a variety of pathological situations with risk of persistence in adulthood. Given its major Public Health importance, pre-obesity and obesity trends in children and adolescents should be monitored with special attention. Eating habits and energy expenditure are factors that influence obesity and its control. Some studies conclude that there is a direct association between these factors and the presence of obesity and others present opposite conclusions. It was intended to determine the prevalence of overweight (pre-obesity and obesity) in children and youth in Portugal and to associate it with eating habits, physical activity and sedentary behaviors of adolescents. The population in study is constituted by all adolescents of both sexes that attend basic (2nd and 3rd grade) and secondary official education of continental Portugal (n=5708). All participants in study were anthropometrically evaluated (weight and height) and answered a questionnaire of eating habits and food frequency, physical activity and sedentary behaviors. The study results indicate a prevalence of pre-obesity in children and youth in Portugal of 22.6% and a prevalence of obesity of 7.8%. Both obesity and pre-obesity present higher indicators in boys (p=0.01) and younger adolescents (p=0.00). In relation to the studied eating habits it should be noted that the frequency of consumption of meals away from home is very similar between the normal weight group and the overweight group. Moreover, the supper meal is consumed by a much larger number of normal weight adolescents as compared to the ones with overweight (p=0.01). Regarding the intake of certain foods or food groups, it was found that, in general, the consumption of foods with characteristics of low nutritional quality (saturated fat, salt and simple sugars) was higher in the normoponderal group compared with the overweight group (soft drinks, snacks, fast-food, sugary cereals, desserts) (p<0.05). In respect to physical activity, the number of weekly hours of physical activity decreases from the normoponderal group to the group with overweight. Within the group with overweight, obese subjects also present a lower average than pre-obese subjects. As we can affirm that the higher the physical activity index the lower the BMI percentile, physical activity appears as a protective factor for a healthy weight (p<0.05). When they were asked to characterize their lifestyle and sports ability, it was found that overweight groups characterized themselves with lower indicators than the normoponderal group (p<0.05). Regarding sedentary behaviors, it appears that they were more prevalent in groups with overweight than in the normoponderal group (p<0.05). In conclusion, the results of the obesity prevalence attained are similar to the results obtained in other studies, revealing a very worrying situation in terms of Public Health. In relation to the eating habits there were no significant differences between the groups (normoponderal, pre-obesity and obesity). Physical activity appears as a protective factor from weight gain with a direct association with nutritional status (BMI). It was found that young people in Portugal who had the highest indicators of physical activity were those who presented normal weight. The sedentary behaviors were presented as a factor conducive to the development of overweight being directly related to the BMI percentile. The most frequent sedentary behaviors were television viewing and computer/internet

Isoflavones in food supplements: chemical profile, label accordance and permeability study in Caco-2 cells

Consumers nowadays are playing an active role in their health-care. A special case is the increasing number of women, who are reluctant to use exogenous hormone therapy for the treatment of menopausal symptoms and are looking for complementary therapies. However, food supplements are not clearly regulated in Europe. The EFSA has only recently begun to address the issues of botanical safety and purity regulation, leading to a variability of content, standardization, dosage, and purity of available products. In this study, isoflavones (puerarin, daidzin, genistin, daidzein, glycitein, genistein, formononetin, prunetin, and biochanin A) from food supplements (n = 15) for menopausal symptoms relief are evaluated and compared with the labelled information. Only four supplements complied with the recommendations made by the EC on the tolerable thresholds. The intestinal bioavailability of these compounds was investigated using Caco-2 cells. The apparent permeability coefficients of the selected isoflavonoids across the Caco-2 cells were affected by the isoflavone concentration and product matrix.