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DSpace - Universidade do Porto (61.461 recursos)
Este repositório institucional visa coleccionar, preservar e disponibilizar na Internet a produção intelectual da comunidade académica da U.PORTO. Apenas as publicações em texto integral e de acesso livre (sob as condições de licença pública Creative Commons)fazem parte deste repositório. Informações adicionais sobre outras publicações encontram-se em

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Mostrando recursos 1 - 20 de 165

1. Acute acalculous cholecystitis in malaria: A review of seven cases from an adult cohort - Abreu, C.; Santos, L.; Poínhos, Rui; Sarmento, A.
Purpose and methods Acute acalculous cholecystitis (AAC) is an uncommon condition related to serious clinical conditions, such as surgery, trauma, burn injuries and sepsis. The diagnosis of AAC remains challenging to make, since it generally occurs as a secondary event in acutely ill patients with another disease. Imaging evaluation is crucial, and welknown criteria are accepted for the diagnosis. To our knowledge, only case reports of AAC related to 12 malaria adult patients have been published. In this series, seven cases of AAC from a cohort of 42 adult patients with severe imported falciparum malaria [according to the World Health Organization (WHO)...

2. Relevance of a hypersaline sodium-rich naturally sparkling mineral water to the protection against Metabolic Syndrome induction in fructose-fed Sprague-Dawley rats: a biochemical, metabolic and redox approach. - Pereira CD; Milton S; Araújo JR; Guimarães JT; Pestana D; Santos A; Ferreira R; Ascensão A; Magalhães J; Azevedo I; Monteiro R; Martins MJ
The Metabolic Syndrome increases the risk for atherosclerotic cardiovascular disease and type 2 Diabetes Mellitus. Increased fructose consumption and/or mineral deficiency have been associated with Metabolic Syndrome development. This study aimed to investigate the effects of 8 weeks consumption of a hypersaline sodium-rich naturally sparkling mineral water on 10% fructose-fed Sprague-Dawley rats (Metabolic Syndrome animal model). The ingestion of the mineral water (rich in sodium bicarbonate and with higher potassium, calcium and magnesium content than the tap water used as control) prevented not only the fructose-induced increase of heart rate, plasma triacylglycerols, insulin and leptin levels, hepatic catalase activity and...

3. DIET QUALITY IN ELDERLY PORTUGUESE HOUSEHOLDS - Santos, Débora; Rodrigues, Sara; Oliveira, Bruno; Almeida, Maria Daniel Vaz de
Objective: To identify diet quality time trends in Portuguese elderly households and the association of diet quality with sociodemographic characteristics. Design: Set of four cross-sectional studies. Setting: Portuguese population. Subjects: Nationally representative samples from Household Budget Surveys (1989-1990, 1994-1995, 2000-2001 and 2005-2006 versions). Households with members aged ≥ 65 years were categorized as solitary elderly female, solitary elderly male, or elderly couple (composed of one elderly female and one elderly male) and compared with adult households with the same composition. Methods: Diet quality was assessed through a revised version of the Healthy Diet Indicator (HDIr). Univariate and multiple backward linear regression models were used to study the...

4. Evaluation of prerequisite programs implementation at schools foodservice - Margarida Martins; Ada Rocha
Introduction: Strengthening food safety measures in schools would improve protection of students and school staff from outbreaks of foodborne illness. The main objective of this study was to evaluate the non-conformities in prerequisite programs implementation at school foodservice. Methods: This descriptive study was conducted between October and December 2011 involving 88 school foodservice units at a Portuguese Municipality. Each school foodservice was audited using a hygiene-sanitary checklist including 146 statements by the same nutritionist. Prerequisite program procedures were evaluated after categorization as standard operating procedures, sanitation and hygiene procedures and procedures for receiving and storage of foods. Food safety procedures and practices were compared between cooking and distribution...

5. System of planning and evaluation of school meals - Ada Rocha; Cláudia Afonso; Maria Santos; Cecília Morais; Bela Oliveira; Rui Chilro
Objective: To develop a software to plan and evaluate school meals according to the main national and international standards for foods and nutrition. Design: Development of software. Setting: Public schools, Portugal. Subjects: School meals for students. Results: The System of Planning and Evaluation of School Meals (SPARE) is a software that allows the planning of school meals in an effective and organized way, according to the main national and international standards for food and nutrition. The regular use of this tool enables the evaluation, monitoring and verification towards continuous improvement of the quality of school meals. Conclusions: The SPARE software aims to promote healthy eating by focusing on the planning and...

6. Food hygiene practices in different food establishments - Ilija Djekic; Nada Smigic; Eleni P. Kalogianni; Ada Rocha; Lamprini Zamioudi; Ana Pacheco
The aim of this study was to investigate three dimensions of food hygiene in three European cities - Belgrade, Thessaloniki and Porto. The first dimension of the survey was to evaluate the level of hygiene in different food establishments supplying food direct to consumers. A total of 91 food businesses were included in the survey with 30 food businesses from Belgrade and Porto, and 31 from Thessaloniki. In parallel with scoring the premises, the second dimension of the study was to examine the opinion of managers of these food establishments regarding food hygiene rating. Finally, in order to justify the importance of food hygiene, the research...

7. Food waste as an index of foodservice quality - Maria Ferreira; Margarida Martins; Ada Rocha
Purpose – The purpose of this paper is to evaluate waste at a Portuguese university setting in order to suggest improvements on foodservice sustainability. Design/methodology/approach – The work was developed during four weeks in order to allow the evaluation of parameters of an entire menu cycle. The index of waste/consumption (%) was obtained by the ratio between plate waste and the quantity of foods distributed, subtracting the weight of leftovers. Findings – The average index of waste/consumption was approximately 24 percent, higher in the days with a fish menu, values considered unacceptable. Each canteen user is served with approximately 940 g of foods, from which only 660 g...

8. Comparação da composição corporal de remadores utilizando a bioimpedância e as dobras cutâneas - Margarida Martins; Ricardo Carvalheiro; Ada Rocha

9. Processing and storage effects on anthocyanin composition and antioxidant activity of jams produced with Camarosa strawberry - Amaro, Luís; Soares, Teresa; Pinho, Carina; Almeida, Isabel; Pinho, Olívia; Ferreira, Isabel
Anthocyanin profiles and radical scavenging activity of Camarosa strawberry jams as affected by two processing methods (conventional/industrial) and storage conditions were evaluated. Industrial strawberry jam produced in a closed system with vacuum preserved the anthocyanin composition (the total content was 35.77 ± 2.56 mg per 100 g) when compared with conventional jam produced in an open system (3.35 ± 0.05 mg per 100 g). However, the radical scavenging activity of conventional jam was lower than that of industrial jam, as EC50 was 52.99 ± 0.94 and 44.33 ± 2.47 mg mL−1, respectively. Two-way analysis of variance indicated a significant effect...

10. Furans and other volatile compounds in ground roasted and espresso coffee using headspace solid-phase microextraction: Effect of roasting speed - Petisca, Catarina; Palacios, Trinidad; Farrah, Adriana; Pinho, Olívia; Ferreira, Isabel
The profile of major classes of furanic compounds, as well as other volatile compounds, was evaluated by headspace solid-phase microextraction GC/MS in Arabica ground coffee roasted at three speeds, and in their respective espresso coffees. A total of 113 and 105 volatile compounds were respectively identified in ground coffee and espresso coffee. They were clustered in the following chemical classes: furans, pyrroles, pyridines, pyrazines, ketones, hydrocarbons, aldehydes and others. Results from Principal Component Analysis (PCA) using the data of major volatile class as variables showed that the levels (expressed as relative percentage of total peak area) of furans and pyrroles...

11. Analysis of Pesticides in Tomato Combining QuEChERS and Dispersive Liquid-Liquid Microextraction Followed by High-Performance Liquid Chromatography - Melo, Armindo; Mansilha, Catarina; Pinho, Olívia; Ferreira, Isabel
A new sample preparation procedure combining QuEChERS and dispersive liquid–liquid microextraction (DLLME) was optimized for the determination at trace levels of 13 pesticides from different chemical families (i.e. 2,4-D, acetamiprid, bentazone, cymoxanil, deltamethrin, dicamba, diuron, foramsulfuron, mesotrione, metalaxyl-M, methomyl, pyraclostrobin and tembotrione) in tomato by high-performance liquid chromatography with diode array detection. Target pesticides from tomato samples were isolated by liquid partitioning with acetonitrile and salts and cleaned up by dispersive solid-phase extraction (d-SPE); the analytes were concentrated in trichloromethane by the DLLME procedure. The disperser solvent from DLLME was used at the same time as carrier of analytes form...

12. α-MSH signalling via melanocortin 5 receptor promotes lipolysis and impairs re-esterification in adipocytes.

13. Structural determinants regulating cell surface targeting of melanocortin receptors

14. Characterization and modulation of glucose uptake in human blood-brain barrier model - Manuela Meireles; Fátima Martel; João Araújo; Celestino Santos-Buelga; Susana Gonzalez-Manzano; Montserrat Dueñas; Victor Freitas; Nuno Mateus; Conceição Calhau; Ana Faria

15. Blueberries in health promotion: a metabolic overview - Sónia Alves; Sara Silva; Mauela Meireles; Ana Faria; Manuela Pintado; Conceição Calhau

16. Cardiovascular risk in Mozambique: who should be treated for hypertension? - Albertino Damasceno; Patrícia Padrão; Carla Silva-Matos; António Prista; Ana Azevedo; Nuno Lunet
Aim: To estimate the proportion of Mozambicans eligible for pharmacological treatment for hypertension, according to single risk factor and total cardiovascular risk approaches. Methods: A representative sample of Mozambicans aged 40–64 years (n¼1116) was evaluated according to the WHO STEPwise Approach to Chronic Disease Risk Factor Surveillance (STEPS). We measured blood pressure (BP) and 12-h fasting blood glucose levels and collected data on sociodemographic characteristics, smoking, and use of antidiabetic and antihypertensive drugs. We estimated the 10-year risk of a fatal or nonfatal major cardiovascular event (WHO/International Society of Hypertension risk prediction charts), and computed the proportion of untreated participants eligible for pharmacological treatment for hypertension, according to BP values alone and accounting also for the total...

17. Ações de alimentação e nutrição e sua interface com segurança alimentar e nutricional: uma comparação entre Brasil e Portugal - Vieira, Viviane; Gregório, Maria João; Mancuso, Ana; Graça, Pedro
This paper aims to compare food and nutrition actions related to foodsecurity (FS) in Brazil and Portugal, keeping in mind that several countries have established guidelines to guarantee adequate food. Both nations are experiencing a reduction in fertility rates, increased life expectancy, and a high prevalence of non-communicable diseases. In Brazil, 30.2% of households live in food insecurity; in Portugal, even without estimating food insecurity, 18.0% of its inhabitants are at risk for poverty. The National Food and Nutrition Policy is the current Brazilian document which seeks to ensure universal access to food. Portugal, due to its inclusion in the...

18. A cohort study on psychosocial adjustment and psychopathology in adolescents and young adults with congenital heart disease. - Freitas, Isabel; Castro, Marta; Sarmento, Sofia; Moura, Cláudia; Viana, Victor; Areias, José; Areias, Maria
Objectives: Our purpose was to study psychosocial adjustment and psychiatric morbidity of adolescents and young adults with congenital heart disease (CHD). Design: All assessment measures were obtained on a single occasion. Clinical data was obtained through the patient's clinical records. Setting: A teaching and tertiary care facility in Porto, Portugal. Participants: We evaluated 110 CHD patients (62 male) aged from 12 to 26 years (mean=18.00±3.617), 58 cyanotic. All assessment measures were obtained on a single occasion in a tertiary hospital. Demographic information and clinical history were collected. Primary and secondary outcome measures: Questionnaires regarded topics such as social support, family educational...

19. Food Handler´s Perception of Fresh Cut Products - Barros, Manuela; Rocha, Ada
The use of Fresh Cut Products (FCP) allows food service units to offer a greater variety of menus, reducing costs and minimizing cross contamination. Few food units in Portugal are adopting FCP, since these products are viewed as being more expensive and are regarded as less natural and easily perishable.The present study aims to identify and analyze the level of awareness of food service operators in respect to FCP. Approximately 90% of food handlers referred the use of FCP at their workplace, pointing as the main advantages for using them the less time spent on preparation (58.6%), the variety (55.9%) and the convenience (55.9%). Reasons...

20. The Impact of an Intervention Taught by Trained Teachers on Childhood Overweight - Rosário, Rafaela; Oliveira, Bruno; Araújo, Ana; Lopes, Óscar; Padrão, Patrícia; Moreira, André; Teixeira, Vitor; Barros, Renata; Pereira, Beatriz; Moreira, Pedro
The purpose of this study was to assess the effects of a six-months' nutrition program, delivered and taught by classroom teachers with in-service nutrition training, on the prevention of overweight and obesity among children in grades 1 to 4. In this randomized trial, four hundred and sixty four children from seven elementary schools were allocated to a nutrition educational program delivered by their own teachers. Intervened teachers had 12 sessions of three hours each with the researchers throughout six months, according to the topics nutrition and healthy eating, the importance of drinking water and healthy cooking activities. After each session,...

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