DAN - Apresentações orais em encontros internacionais
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- Occurrence and infant exposure assessment of chemical contaminants in baby foodsPublication . Alvito, Paula; Vasco, Elsa; Martins, Carla; Paixão, Eleonora; Calhau, Maria Antónia
- Work Package 2 Bioactive Components, Nutritional and Microbiological Characterization of Traditional FoodsPublication . Costa, H.S.; Finglas, P.
- EuroFIR Nexus WP1Publication . Calhau, Maria Antónia; Castanheira, Isabel; Becker, Wulf; Finglas, Paul; Roe, Mark; Columbani, Paolo; Moller, Anders; Ireland, Jayne; Bell, Simone; Unwin, IanPresentation of quality workpackage objectives, partners, timeschedule and tasks
- Preparación de envases activos con capacidad antioxidante y antimicrobiana basados en astaxantina y quitosanoPublication . Sanches-Silva, A.; Costa, H.S.
- Project Obesity ZeroPublication . Rito, Ana Isabel; Carvalho, Maria Ana; Ramos, Carlos; Breda, JoãoIntroduction: Childhood Obesity represents one of the most serious public health challenges, as it reached epidemic levels in several countries around the world. The prevention and treatment of this disease should be a top priority. The interventions used within childhood obesity approach should be community and family based and should essentially lie upon behaviour modification regarding diet and physical activity. The main purpose of the Project Zero Obesity (POZ) is to tackle childhood obesity at municipality level trough a set of activities (Healthy cooking programme and a nutritional guidance programme) targeted at low income families with overweight children (6-10 years old). Methods: A Quasi-experimental multicentric study, developed in 2009/2010 in five Portuguese municipalities from the five regions of Portugal: Melgaço - North, Mealhada- Centre, Cascais - Great Lisbon, Beja - Alentejo articulated with Healthcare centres and local governments. The program offered, to children and their families, a four stages intervention: a) 4 sessions of Individual Nutrition Counseling, b) a Healthy Cooking workshop, c) 2 children’s group sessions (nutrition and physical activity) and d) a Parents/families Group counselling. Two training sessions were conducted by the same trainer following the same methodology. Each fieldworker (5 nutritionists: 1 nutritionist for each municipality) received an “POZ Manual” with standardization of anthropometric measurements, nutrition and physical activity counselling, the Evaluation Forms and the dietary assessment methods The anthropometric instruments (digital scale and stadiometers) were calibrated and given to the municipalities. The anthropometric examinations were performed according to the POZ manual and the recommended techniques. Body mass index (BMI) was calculated using the formula weight (kg)/height (m)2 being height the average of the two height measurements performed in every child. The criteria used to definitions of overweight and obesity was the CDC Growth charts (2000) defining Overweight and Obesity as BMI-for-age ≥ 85 and ≥ 95 percentiles respectively. This criteria was adopted by the Portuguese Ministry of Health. Outcomes of nutritional status were assessed at the baseline and after 6 months. Results: The study enrolled 482 overweight children from the 5 municipalities. Parent’s written consent was not obtained from 188 participants. Of the 294 overweight children participants in the intervention (47,5% boys and 52,9% girls; mean age 8,6 years; mean percentile 93,6), 220 have completed the program. 80,5% of children decreased their percentile during the project. Mean percentile (P) decreased from P 93,6 to P 91,3 and these differences were statistically significant (P < 0,05). Conclusions: Zero Obesity Project established and promoted a real partnership between healthcare centres and local governments, was the first community-family-based programme targeting overweight children in Portugal and developed competences and skills, within the families, about nutrition, healthier food selection, preparation and cooking, especially in those families with obese children. These data suggest that interventions at local level can have significant effects on childhood overweight prevalence. This knowledge may identify additional potential effective interventions in order to reverse the obesity trends in Portuguese children, one of the highest in Europe.
- Determinação da ingestão de metionina e ácidos gordos polinsaturados e sua relação com os níveis plasmáticos de homocisteína e cisteína em diabéticos do tipo 2Publication . Valente, A.; Bicho, M.; Duarte, R.; Raposo, J.F.; Costa, H.S.INTRODUCTION: Diabetes mellitus is a major public health threat in the World. In Portugal, there are around 1 million type 2 diabetic patients. This chronic disease, hyperhomocysteinaemia and hypercysteinaemia are known as cardiovascular risk factors. Homocysteine (Hcy) is a sulphur containing amino acid that is derived from methionine, an essential amino acid found in abundance in protein of animal origin. Diet plays a vital role in the risk factors of chronic disease. In observational studies, higher intakes of n-3 fatty acids appear to reduce the risk of coronary artery disease, hypertension and diabetes. Other studies have shown that diets rich in n 6 fatty acids may increase the risk of disease. Recent evidence suggests that a balanced ratio of these 2 types of fatty acids may be necessary for the prevention of chronic diseases. AIM: To study a possible relationship between methionine, n-3 and n-6 intakes and plasma Hcy and Cys levels in type 2 diabetic patients with and without angiopathy. METHODS: Study population was composed by 150 Portuguese type 2 diabetic patients, aged between 40-75 years. The participants were divided in two groups: I - 75 diabetics with angiopathy; II - 75 diabetics without angiopathy. Nutrients intake were estimated from a food-frequency questionnaire previously validated for Portuguese adults with cardiovascular disease by the Epidemiology Department, Faculty of Medicine, University of Porto. Plasma Hcy and Cys levels were analyzed using a previously validated HPLC method. The n-6/n-3 ratio was calculated for all participants. Hyperhomocysteinaemia was defined for Hcy levels ≥15 µM. A statistical analysis was performed by unpaired two-tailed z-test and Pearson's Correlation Coefficient. RESULTS: The prevalence of hyperhomocysteinaemia was 20% for group I and 8% for group II. The mean values for Hcy plasma levels in group I (10.6 ± 4.7 µM) was slightly higher compared to group II (9.4 ± 4.5 µM). The mean levels for Cys were also higher in group I (246.5 ± 55.6 µM) compared to group II (229.4 ± 48.1 µM). The dietary intakes of methionine, n-3 and n-6 were higher in diabetic patients with angiopathy compared to those without angiopathy. The coefficients of correlation between the different parameters under study were not significant. CONCLUSION: The prevalence of hyperhomocysteinaemia and Cys plasma levels are associated with the presence of angiopathy. The dietary intake of methionine, n-3 and n-6 fatty acids are not related with Hcy and Cys plasma levels in type 2 diabetic patients.
- Eficácia da suplementação de vitamina A em crianças da República Democrática de São Tomé e PríncipePublication . Valente, A.; Albuquerque, T.G.; Carvalho, A.; Costa, H.S.Introdução: A República Democrática de São Tomé e Príncipe é um país subdesenvolvido com indicadores de saúde preocupantes no que se refere à taxa de mortalidade infantil, especialmente em crianças de idades pré-escolares. Segundo os dados da United Nations Children's Fund (UNICEF), em 2009 a taxa de mortalidade foi ainda de 37,1%, sendo a malnutrição uma das principais causas de morte infantil, neste País. A deficiência de vitamina A é uma das carências nutricionais mais prevalentes no Mundo subdesenvolvido, apresentando-se como um problema de Saúde Pública em mais de 70 países. De acordo com os critérios da World Health Organization e da UNICEF, a deficiência em vitamina A é considerado um grave problema de Saúde Pública, quando a prevalência de hipovitaminose A (<0,70 μmol/L ou 200 μg/L) é igual ou maior a 20%. Objectivos: Este trabalho teve como objectivo dosear e avaliar os níveis séricos de retinol em crianças da República Democrática de São Tomé e Príncipe antes e após um período de suplementação. Métodos: A população em estudo é constituída por 212 crianças com idades compreendidas entre o 1 e os 5 anos, de dois (Água Grande e Mé-Zochi) dos sete distritos administrativos da República Democrática de São Tomé e Príncipe. Os níveis séricos de retinol nos participantes do estudo foram determinados por cromatografia líquida de elevada resolução. Resultados: Os resultados obtidos indicam que no período de pré-suplementação cerca de 37% das crianças participantes no estudo tinham hipovitaminose A severa (retinol sérico: <100 μg/L), e no período pós-suplementação esse valor passou para 2%. Verificou-se também uma redução na percentagem de participantes com hipovitaminose A moderada (retinol sérico: 100-200 μg/L), que passou de 59% para cerca de 15%. A percentagem de crianças que inicialmente tinham valores séricos de retinol normais (≥200 μg/L) era de 4,4% e após o período de suplementação, essa percentagem passou para 83,5%, o que significa um aumento de cerca de 79%. Em termos globais, cerca de 16,5% das crianças continuam a ter hipovitaminose A e 83,5% passaram a ter níveis normais de retinol sérico, dos quais 29,7% têm entre 200-300 μg/L, 31,1% entre 300-400 μg/L e em 22,7% dos casos os valores séricos de retinol são superiores a 400 μg/L. Conclusões: A eficácia da suplementação com vitamina A nas crianças da República Democrática de São Tomé e Príncipe foi comprovada pela redução da prevalência de hipovitaminose A em cerca de 79,1%.
- Data Collection on Foodborne Outbreaks Preliminary INSA resultsPublication . Viegas, Silvia
- EuroFIR Nexus-WP1 – Quality standards, certification and thesauri supportPublication . Calhau, Maria Antónia; Castanheira, Isabel; Becker, Wulf; Finglas, Paul; Roe, Mark; Columbani, Paolo; Moller, Anders; Ireland, Jayne; Bell, Simone; Unwin, IanStatus and progress of quality workpackage
- Project Obesity Zero – a successfully community based programme in PortugalPublication . Carvalho, Maria Ana; Ramos, Carlos; Breda, João; Rito, Ana IsabelIntroduction: Childhood Obesity represents one of the most serious public health challenges, as it reached epidemic levels in several countries around the world. The prevention and treatment of this disease should be a top priority. The interventions used within childhood obesity approach should be community and family based and should essentially lie upon behaviour modification regarding diet and physical activity. The main purpose of the Project Obesity Zero (POZ) is to tackle childhood obesity at municipality level trough a set of activities (Healthy cooking programme and a nutritional guidance programme) targeted at low income families with overweight children. Methods: A Quasi-experimental multicentric study, developed in 2009 in five portuguese municipalities from the five regions of Portugal: Melgaço - North, Mealhada- Centre, Cascais - Great Lisbon, Beja – Alentejo and Silves- Algarve articulated with Healthcare centres and local governments. The program offered, to children and their families, a four stages intervention: a) 4 sessions of Individual Nutrition Counselling, b) a Healthy Cooking workshop, c) 2 children’s group sessions (nutrition and physical activity) and d) a Parents/families Group counselling. Outcomes of nutritional status were assessed at baseline and at 6 months after. Results: Of the 293 children participants in the intervention (47,5% boys and 52,9% girls; mean age 8,6 years; mean percentile 93,6), 220 (75%) have completed the program. Mean percentile decreased by 2,369 (P< 0,05). Conclusions: These data suggest that interventions at local level can have significant effects on childhood overweight prevalence. This knowledge may identify additional potential effective interventions in order to reverse the obesity trends in Portuguese children, one of the highest in Europe.