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Graça Dias M, Vasco E, Ravasco F, Oliveira L. The first harmonised total diet study in Portugal: Vitamin D occurrence and intake assessment. Food Chem 2024; 435:136676. [PMID: 37797450 DOI: 10.1016/j.foodchem.2023.136676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 06/02/2023] [Accepted: 06/18/2023] [Indexed: 10/07/2023]
Abstract
Vitamin D acts in calcium and phosphate homeostasis and also as an immunomodulatory hormone. To estimate the vitamin D intake by the 'adults' and 'elderly' Portuguese populations TDS methodology was used, since in the absence of skin UVB exposure, food and supplements are the only vitamin D sources. Vitamin D was quantifiable in 78 (24 from the fish group) of the 164 TDS samples. Sea bream contained the most vitamin D (13.8 µg/100 g), followed by plaice (9.2 µg/100 g). MCRA software (semi-probabilistic approach) was used to estimate the median vitamin D intake that ranged between 2.47 ('adults' 'males') - 1.45 ('elderly' 'females') µg/day, well below the Dietary Reference Values (5-15 µg/day). Plaice, sea bream and sardine were the main contributors to intake. A prevalence of 94% inadequate vitamin D intake for 'adults' and 'elderly' was found based on the estimated average requirement of 10 µg/day.
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Affiliation(s)
- M Graça Dias
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal.
| | - Elsa Vasco
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal
| | - Francisco Ravasco
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal
| | - Luísa Oliveira
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal
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2
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Alvito P, Assunção RM, Bajard L, Martins C, Mengelers MJB, Mol H, Namorado S, van den Brand AD, Vasco E, Viegas S, Silva MJ. Current Advances, Research Needs and Gaps in Mycotoxins Biomonitoring under the HBM4EU-Lessons Learned and Future Trends. Toxins (Basel) 2022; 14:826. [PMID: 36548723 PMCID: PMC9783896 DOI: 10.3390/toxins14120826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/11/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022] Open
Abstract
Mycotoxins are natural metabolites produced by fungi that contaminate food and feed worldwide. They can pose a threat to human and animal health, mainly causing chronic effects, e.g., immunotoxic and carcinogenic. Due to climate change, an increase in European population exposure to mycotoxins is expected to occur, raising public health concerns. This urges us to assess the current human exposure to mycotoxins in Europe to allow monitoring exposure and prevent future health impacts. The mycotoxins deoxynivalenol (DON) and fumonisin B1 (FB1) were considered as priority substances to be studied within the European Human Biomonitoring Initiative (HBM4EU) to generate knowledge on internal exposure and their potential health impacts. Several policy questions were addressed concerning hazard characterization, exposure and risk assessment. The present article presents the current advances attained under the HBM4EU, research needs and gaps. Overall, the knowledge on the European population risk from exposure to DON was improved by using new harmonised data and a newly derived reference value. In addition, mechanistic information on FB1 was, for the first time, organized into an adverse outcome pathway for a congenital anomaly. It is expected that this knowledge will support policy making and contribute to driving new Human Biomonitoring (HBM) studies on mycotoxin exposure in Europe.
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Affiliation(s)
- Paula Alvito
- National Institute of Health Dr. Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal
- Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Ricardo Manuel Assunção
- National Institute of Health Dr. Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal
- Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- IUEM, Instituto Universitário Egas Moniz, Egas Moniz-Cooperativa de Ensino Superior, CRL, Campus Universitário—Quinta da Granja, Monte da Caparica, 2829-511 Caparica, Portugal
| | - Lola Bajard
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic
| | - Carla Martins
- National Institute of Health Dr. Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal
- NOVA National School of Public Health, NOVA University of Lisbon, 1600-560 Lisbon, Portugal
- Comprehensive Health Research Center, CHRC, 1600-560 Lisbon, Portugal
| | - Marcel J. B. Mengelers
- National Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands
| | - Hans Mol
- Wageningen Food Safety Research (WFSR), Part of Wageningen University & Research, 6708 WB Wageningen, The Netherlands
| | - Sónia Namorado
- National Institute of Health Dr. Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal
- Comprehensive Health Research Center, CHRC, 1600-560 Lisbon, Portugal
| | - Annick D. van den Brand
- National Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands
| | - Elsa Vasco
- National Institute of Health Dr. Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal
| | - Susana Viegas
- NOVA National School of Public Health, NOVA University of Lisbon, 1600-560 Lisbon, Portugal
- Comprehensive Health Research Center, CHRC, 1600-560 Lisbon, Portugal
| | - Maria João Silva
- National Institute of Health Dr. Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal
- ToxOmics—NOVA Medical School, NOVA University of Lisbon, 1150-082 Lisboa, Portugal
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3
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Vasco E, Dias MG, Oliveira L. The first harmonised total diet study in Portugal: Nitrate occurrence and exposure assessment. Food Chem 2022; 392:133152. [PMID: 35671610 DOI: 10.1016/j.foodchem.2022.133152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/22/2022] [Accepted: 05/02/2022] [Indexed: 11/04/2022]
Abstract
A harmonised TDS methodology was used to assess the Portuguese population's nitrate baseline dietary exposure and the risk of exceeding the Acceptable Daily Intake (ADI). Nitrate occurrence in 164 TDS samples pooled based on 20 FoodEx2 groups, representative of 18 to 75 years old population diet, was determined using UV-HPLC. The 'vegetables' group had the highest mean nitrate concentration (353 mg/kg), followed by 'starchy roots' (62 mg/kg), 'composite dishes' (53 mg/kg) and 'fruits' (46 mg/kg). Lettuce contained the most nitrates (1729 mg/kg). The estimated mean nitrate exposure of 1.17 mg/kg bw/day, with 3.18% of individuals exceeding the ADI, was assessed on a semi-probabilistic approach using the MCRA software. Lettuce (28%) contributed most to nitrate exposure followed by vegetable soup (13%). Processed meat contribution to exposure was 0.86% and 2.44% (overall population and consumers only). At population level the nitrate estimated exposure (mean and 95th percentile) revealed no reason for concern.
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Affiliation(s)
- Elsa Vasco
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal.
| | - M Graça Dias
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal
| | - Luísa Oliveira
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge, IP (INSA), Portugal
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Alvito P, Silva M, Viegas S, Vasco E, Martins C, Assunção R, Silva S, Gilles L, Govarts E, Schoeters G, Namorado S. P22-27 Exposure assessment of total DON in urine of Portuguese adult population under the HBM4EU aligned studies. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Alvito P, Vasco E, Assunção R. Food safety and risk assessment. Food Res Int 2021; 147:110513. [PMID: 34399491 DOI: 10.1016/j.foodres.2021.110513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paula Alvito
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal; CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Elsa Vasco
- Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal.
| | - Ricardo Assunção
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal; Food and Nutrition Department, National Institute of Health Doctor Ricardo Jorge (INSA), 1649-016 Lisboa, Portugal.
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6
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Salagre E, Quílez S, de Benito R, Jaafar M, van der Meulen HP, Vasco E, Cid R, Fuller EJ, Talin AA, Segovia P, Michel EG, Polop C. A multi-technique approach to understanding delithiation damage in LiCoO 2 thin films. Sci Rep 2021; 11:12027. [PMID: 34103560 PMCID: PMC8187655 DOI: 10.1038/s41598-021-91051-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/17/2021] [Indexed: 11/22/2022] Open
Abstract
We report on the delithiation of LiCoO2 thin films using oxalic acid (C2H2O4) with the goal of understanding the structural degradation of an insertion oxide associated with Li chemical extraction. Using a multi-technique approach that includes synchrotron radiation X-ray diffraction, scanning electron microscopy, micro Raman spectroscopy, photoelectron spectroscopy and conductive atomic force microscopy we reveal the balance between selective Li extraction and structural damage. We identify three different delithiation regimes, related to surface processes, bulk delithiation and damage generation. We find that only a fraction of the grains is affected by the delithiation process, which may create local inhomogeneities. However, the bulk delithiation regime is effective to delithiate the LCO film. All experimental evidence collected indicates that the delithiation process in this regime mimics the behavior of LCO upon electrochemical delithiation. We discard the formation of Co oxalate during the chemical extraction process. In conclusion, the chemical route to Li extraction provides additional opportunities to investigate delithiation while avoiding the complications associated with electrolyte breakdown and simplifying in-situ measurements.
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Affiliation(s)
- E Salagre
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain
| | - S Quílez
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain
| | - R de Benito
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain
| | - M Jaafar
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain.,IFIMAC (Condensed Matter Physics Center), Universidad Autónoma de Madrid, Madrid, Spain
| | - H P van der Meulen
- Departamento de Física de Materiales, Universidad Autónoma de Madrid, Madrid, Spain.,Instituto Universitario de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Madrid, Spain
| | - E Vasco
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - R Cid
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Madrid, Spain.,BM25-SpLine (Spanish CRG Beamline) at the European Synchrotron (E.S.R.F.), Grenoble, France.,Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Vitoria-Gasteiz, Spain
| | - E J Fuller
- Sandia National Laboratories, Livermore, CA, USA
| | - A A Talin
- Sandia National Laboratories, Livermore, CA, USA
| | - P Segovia
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain.,IFIMAC (Condensed Matter Physics Center), Universidad Autónoma de Madrid, Madrid, Spain.,Instituto Universitario de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Madrid, Spain
| | - E G Michel
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain.,IFIMAC (Condensed Matter Physics Center), Universidad Autónoma de Madrid, Madrid, Spain.,Instituto Universitario de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Madrid, Spain
| | - C Polop
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain. .,IFIMAC (Condensed Matter Physics Center), Universidad Autónoma de Madrid, Madrid, Spain. .,Instituto Universitario de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Madrid, Spain.
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7
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Vasco E, Dias MG, Oliveira L. The first harmonised total diet study in Portugal: Planning, sample collection and sample preparation. Food Chem 2021; 363:130258. [PMID: 34214890 DOI: 10.1016/j.foodchem.2021.130258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 11/30/2022]
Abstract
The first Total Diet Study (TDS) was carried out in Portugal using harmonised procedures developed under the TDS-Exposure project. This publication describes in detail the TDS planning, sample collection and preparation, filling a gap found in literature. TDS food list (1070 items) by food group for 18-74 years olds was derived using 24 h recall food consumption survey data. Of the 164 TDS samples defined based on FoodEx2, the most represented belonged to 'Composite dishes' (21%) and 'Fish and Fish products' (15%). A total of 227 TDS samples (12 subsamples each), were collected (2014-2016) in Greater Lisbon region as 126 'national', 17 'regional non-seasonal' and 21 'regional seasonal'. Seasonal samples were mostly fruits, vegetables and some fish. Subsamples were prepared as consumed, pooled, homogenised and stored at -18 °C. The harmonised procedures used allow comparison of exposure assessment with other countries and evaluation of exposure trends if TDS are used.
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Affiliation(s)
- Elsa Vasco
- Food and Nutrition Department, National Institute of Health Doutor Ricardo Jorge, IP (INSA), Av. Padre Cruz, 1649-016 Lisboa, Portugal
| | - M Graça Dias
- Food and Nutrition Department, National Institute of Health Doutor Ricardo Jorge, IP (INSA), Av. Padre Cruz, 1649-016 Lisboa, Portugal.
| | - Luísa Oliveira
- Food and Nutrition Department, National Institute of Health Doutor Ricardo Jorge, IP (INSA), Av. Padre Cruz, 1649-016 Lisboa, Portugal
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8
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Assunção R, Martins C, Vasco E, Jager A, Oliveira C, Cunha SC, Fernandes J, Nunes B, Loureiro S, Alvito P. Portuguese children dietary exposure to multiple mycotoxins – An overview of risk assessment under MYCOMIX project. Food Chem Toxicol 2018; 118:399-408. [DOI: 10.1016/j.fct.2018.05.040] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/05/2018] [Accepted: 05/16/2018] [Indexed: 11/28/2022]
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9
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Serra-Majem L, Raposo A, Aranceta-Bartrina J, Varela-Moreiras G, Logue C, Laviada H, Socolovsky S, Pérez-Rodrigo C, Aldrete-Velasco JA, Meneses Sierra E, López-García R, Ortiz-Andrellucchi A, Gómez-Candela C, Abreu R, Alexanderson E, Álvarez-Álvarez RJ, Álvarez Falcón AL, Anadón A, Bellisle F, Beristain-Navarrete IA, Blasco Redondo R, Bochicchio T, Camolas J, Cardini FG, Carocho M, Costa MDC, Drewnowski A, Durán S, Faundes V, Fernández-Condori R, García-Luna PP, Garnica JC, González-Gross M, La Vecchia C, Leis R, López-Sobaler AM, Madero MA, Marcos A, Mariscal Ramírez LA, Martyn DM, Mistura L, Moreno Rojas R, Moreno Villares JM, Niño-Cruz JA, Oliveira MBPP, Palacios Gil-Antuñano N, Pérez-Castells L, Ribas-Barba L, Rincón Pedrero R, Riobó P, Rivera Medina J, Tinoco de Faria C, Valdés-Ramos R, Vasco E, Wac SN, Wakida G, Wanden-Berghe C, Xóchihua Díaz L, Zúñiga-Guajardo S, Pyrogianni V, Cunha Velho de Sousa S. Ibero⁻American Consensus on Low- and No-Calorie Sweeteners: Safety, Nutritional Aspects and Benefits in Food and Beverages. Nutrients 2018; 10:E818. [PMID: 29941818 PMCID: PMC6073242 DOI: 10.3390/nu10070818] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/07/2018] [Accepted: 06/20/2018] [Indexed: 02/07/2023] Open
Abstract
International scientific experts in food, nutrition, dietetics, endocrinology, physical activity, paediatrics, nursing, toxicology and public health met in Lisbon on 2⁻4 July 2017 to develop a Consensus on the use of low- and no-calorie sweeteners (LNCS) as substitutes for sugars and other caloric sweeteners. LNCS are food additives that are broadly used as sugar substitutes to sweeten foods and beverages with the addition of fewer or no calories. They are also used in medicines, health-care products, such as toothpaste, and food supplements. The goal of this Consensus was to provide a useful, evidence-based, point of reference to assist in efforts to reduce free sugars consumption in line with current international public health recommendations. Participating experts in the Lisbon Consensus analysed and evaluated the evidence in relation to the role of LNCS in food safety, their regulation and the nutritional and dietary aspects of their use in foods and beverages. The conclusions of this Consensus were: (1) LNCS are some of the most extensively evaluated dietary constituents, and their safety has been reviewed and confirmed by regulatory bodies globally including the World Health Organisation, the US Food and Drug Administration and the European Food Safety Authority; (2) Consumer education, which is based on the most robust scientific evidence and regulatory processes, on the use of products containing LNCS should be strengthened in a comprehensive and objective way; (3) The use of LNCS in weight reduction programmes that involve replacing caloric sweeteners with LNCS in the context of structured diet plans may favour sustainable weight reduction. Furthermore, their use in diabetes management programmes may contribute to a better glycaemic control in patients, albeit with modest results. LNCS also provide dental health benefits when used in place of free sugars; (4) It is proposed that foods and beverages with LNCS could be included in dietary guidelines as alternative options to products sweetened with free sugars; (5) Continued education of health professionals is required, since they are a key source of information on issues related to food and health for both the general population and patients. With this in mind, the publication of position statements and consensus documents in the academic literature are extremely desirable.
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Affiliation(s)
- Lluis Serra-Majem
- Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35016, Spain.
- Spanish Academy of Nutrition and Food Sciences (AEN), Barcelona 08029, Spain.
- Nutrition Research Foundation (FIN), University of Barcelona Science Park, Barcelona 08028, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBER OBN), Instituto de Salud Carlos III, Madrid 28029, Spain.
| | - António Raposo
- Research Center for Biosciences and Health Technologies-CBIOS, Universidade Lusófona de Humanidades e Tecnologias, Lisboa 1749-024, Portugal.
| | - Javier Aranceta-Bartrina
- Spanish Academy of Nutrition and Food Sciences (AEN), Barcelona 08029, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBER OBN), Instituto de Salud Carlos III, Madrid 28029, Spain.
- Spanish Society of Community Nutrition (SENC), Barcelona 08029, Spain.
- Department of Physiology, University of the Basque Country (UPV/EHU), Leioa (Bizkaia) 48940, Spain.
| | - Gregorio Varela-Moreiras
- Spanish Academy of Nutrition and Food Sciences (AEN), Barcelona 08029, Spain.
- Spanish Nutrition Foundation (FEN), Madrid 28010, Spain.
- Department of Pharmaceutical & Health Sciences, School of Pharmacy, CEU San Pablo University, Boadilla del Monte (Madrid) 28668, Spain.
| | - Caomhan Logue
- Nutritional Innovation Centre for Food & Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraines BT52 1SA, UK.
| | - Hugo Laviada
- Research Department of Metabolism and Nutrition, Medical School, Marist University of Merida, Mérida Yucatan 97300, Mexico.
| | - Susana Socolovsky
- Argentine Association of Food Technologists, Buenos Aires 1088, Argentina.
| | - Carmen Pérez-Rodrigo
- Spanish Academy of Nutrition and Food Sciences (AEN), Barcelona 08029, Spain.
- Spanish Society of Community Nutrition (SENC), Barcelona 08029, Spain.
- Department of Physiology, University of the Basque Country (UPV/EHU), Leioa (Bizkaia) 48940, Spain.
| | | | - Eduardo Meneses Sierra
- Mexican College of Internal Medicine, Mexico City 03910, Mexico.
- Hospital General de Especialidades del ISSSTE, Saltillo, Coahuila 25020, Mexico.
| | | | - Adriana Ortiz-Andrellucchi
- Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35016, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBER OBN), Instituto de Salud Carlos III, Madrid 28029, Spain.
| | - Carmen Gómez-Candela
- Clinical Nutrition Department, La Paz University Hospital, Madrid 28046, Spain.
- Hospital La Paz Health Research Institute - IdiPAZ, Autonomous University of Madrid, Madrid 28046, Spain.
| | | | - Erick Alexanderson
- Nuclear Cardiology Department, Instituto Nacional de Cardiología "Ignacio Chávez, Tlalpan, Ciudad de Mexico 14080, Mexico.
- Phisiology Department, National Autonomous University of Mexico, Coyoacán, Ciudad de México 04510, Mexico.
- Mexican Society of Cardiology, México City 14080, Mexico.
| | | | - Ana Luisa Álvarez Falcón
- Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35016, Spain.
- Dr. Negrin University Hospital of Gran Canaria, Las Palmas de Gran Canaria 35010, Spain.
| | - Arturo Anadón
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid 28040, Spain.
| | - France Bellisle
- Nutritional Epidemiology Unit, University of Paris 13, Bobigny 93017, France.
| | | | - Raquel Blasco Redondo
- Regional Center for Sports Medicine of the Junta de Castilla y León, Valladolid 47011, Spain.
| | - Tommaso Bochicchio
- Facultad Mexicana de Medicina, La Salle University, Mexico 14000, D. F., Mexico.
- Mexican Transplant Institute, Cuernavaca, Morelos 62448, Mexico.
| | - José Camolas
- Serviço de Endocrinologia, Hospital de Santa Maria⁻CHLN, Lisboa 1649-035, Portugal.
| | - Fernando G Cardini
- Argentine Quality Institute-Instituto Argentino para la Calidad (IAPC), Ciudad Autónoma de Buenos Aires 1406, Argentina.
| | - Márcio Carocho
- Mountain Research Centre (CIMO), Polytechnic Institute of Bragança, Campus de Santa Apolónia, Bragança 5300-253, Portugal.
| | - Maria do Céu Costa
- ASAE-Autoridade de Segurança Alimentar e Económica, CBIOS/ECTS-The Biosciences Research Center and NICiTeS/ERISA⁻Núcleo de Investigação em Ciências e Tecnologias da Saúde, Grupo Lusófona, Lisboa 1749-024, Portugal.
| | - Adam Drewnowski
- Center for Public Health Nutrition, University of Washington-Center for Obesity Research, Seattle, WA 98195, USA.
| | - Samuel Durán
- Chilean College of Nutritionists, Universidad San Sebastian, Santiago 7500000, Chile.
| | - Víctor Faundes
- Nutrition and Food Technology Institute, University of Chile, Santiago 7830490, Chile.
| | | | - Pedro P García-Luna
- Andalusian Society of Endocrinology, Diabetes and Nutrition, Department of Endocrinology and Nutrition, Virgen del Rocio Hospital, Sevilla 41013, Spain.
| | | | - Marcela González-Gross
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBER OBN), Instituto de Salud Carlos III, Madrid 28029, Spain.
- ImFINE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science-INEF, Universidad Politécnica de Madrid, Madrid 28040, Spain.
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milano 20133, Italy.
| | - Rosaura Leis
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBER OBN), Instituto de Salud Carlos III, Madrid 28029, Spain.
- School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela 15782, Spain.
- Gastroenterology, Hepatology and Paediatric Nutrition Unit of the Santiago Clinical University Hospital, Santiago de Compostela 15706, Spain.
| | - Ana María López-Sobaler
- Department of Nutrition and Food Science, School of Pharmacy, Complutense University of Madrid (UCM), Madrid 28040, Spain.
| | | | - Ascensión Marcos
- Spanish Federation of Nutrition, Food and Dietetics Societies, Madrid 28918, Spain.
- Institute of Food Science, Technology and Nutrition (ICTAN); Spanish National Research Council (CSIC), Madrid 28040, Spain.
| | | | - Danika M Martyn
- Intertek, HERS, Cody Technology Park, Farnborough GU14 0LX, UK.
| | - Lorenza Mistura
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, Rome 00178, Italy.
| | - Rafael Moreno Rojas
- Department of Food Science and Technology, University of Cordoba, Cordoba 14071, Spain.
| | | | - José Antonio Niño-Cruz
- Mexican Nephrological Research Institute, Mexico City 14080, Mexico.
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Tlalpan-Ciudad de México 14080, Mexico.
| | | | - Nieves Palacios Gil-Antuñano
- Department of Medicine, Endocrinology and Nutrition, Sport Medicine Center, AEPSAD, High Sports Council, Madrid 28040, Spain.
| | | | - Lourdes Ribas-Barba
- Nutrition Research Foundation (FIN), University of Barcelona Science Park, Barcelona 08028, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBER OBN), Instituto de Salud Carlos III, Madrid 28029, Spain.
| | - Rodolfo Rincón Pedrero
- Departamento de Educación Médica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Tlalpan-Ciudad de México 14080, Mexico.
| | - Pilar Riobó
- Endocrinology and Nutrition Department, Fundación Jiménez Díaz Hospital, IDC Salud, Madrid 28040, Spain.
- Facultad de Medicina, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain.
| | - Juan Rivera Medina
- Servicio de Gastroenterología, Hepatología y Nutrición del Instituto Nacional de Salud del Niño, Lima 15083, Peru.
- Departamento de Pediatría, Universidad Nacional Mayor de San Marcos, Lima 15083, Peru.
| | - Catarina Tinoco de Faria
- Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35016, Spain.
| | - Roxana Valdés-Ramos
- Faculty of Medicine, Autonomous University of the State of Mexico, Toluca 50180, Mexico.
| | - Elsa Vasco
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisboa 1649-016, Portugal.
| | - Sandra N Wac
- Nutrition and Public Health Working Group, Argentine Nutrition Society, La Plata, Buenos Aires 1900, Argentina.
| | | | - Carmina Wanden-Berghe
- Scientific and Educational Committee, Spanish Society of Parenteral and Enteral Nutrition (SENPE), Barcelona 08017, Spain.
| | - Luis Xóchihua Díaz
- Instituto Nacional de Pediatria, Sociedad Mexicana de Pediatria, Insurgentes Cuicuilco, Ciudad de México 04530, Mexico.
| | - Sergio Zúñiga-Guajardo
- Mexican Diabetes Federation, Mexico. Facultad de Medicina y Hospital Universitario de la Universidad Autónoma de Nuevo León, Monterrey 64630, Mexico.
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10
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Turrini A, Lombardi-Boccia G, Aureli F, Cubadda F, D’Addezio L, D’Amato M, D’Evoli L, Darnerud P, Devlin N, Dias MG, Jurković M, Kelleher C, Le Donne C, López Esteban M, Lucarini M, Martinez Burgos MA, Martínez-Victoria E, McNulty B, Mistura L, Nugent A, Oktay Basegmez HI, Oliveira L, Ozer H, Perelló G, Pite M, Presser K, Sokolić D, Vasco E, Volatier JL. A conceptual framework for the collection of food products in a Total Diet Study. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2017; 35:171-190. [DOI: 10.1080/19440049.2017.1384577] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Aida Turrini
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - Ginevra Lombardi-Boccia
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - Federica Aureli
- Istituto Superiore di Sanità – National Institute of Health (ISS), Rome, Italy
| | - Francesco Cubadda
- Istituto Superiore di Sanità – National Institute of Health (ISS), Rome, Italy
| | - Laura D’Addezio
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - Marilena D’Amato
- Istituto Superiore di Sanità – National Institute of Health (ISS), Rome, Italy
| | - Laura D’Evoli
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - PerOla Darnerud
- Science Department, National Food Agency – Livsmedelsverket (NFA), Uppsala, Sweden
| | - Niamh Devlin
- Institute of Food & Health, University College Dublin (UCD), Dublin, Ireland
| | - Maria Graça Dias
- Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | | | - Cecily Kelleher
- Institute of Food & Health, University College Dublin (UCD), Dublin, Ireland
| | - Cinzia Le Donne
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - Maite López Esteban
- Centro Nacional de Alimentación, Agencia Española de Consumo, Seguridad Alimentaria y Nutrición, Madrid, Spain
| | - Massimo Lucarini
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - Maria Alba Martinez Burgos
- Department of Physiology (Faculty of Pharmacy) Institute of Nutrition and Food Technology ‘José Matáix’ (INYTA) Center for Biomedical Research, Universidad de Granada (UGR), Granada, Spain
| | - Emilio Martínez-Victoria
- Department of Physiology (Faculty of Pharmacy) Institute of Nutrition and Food Technology ‘José Matáix’ (INYTA) Center for Biomedical Research, Universidad de Granada (UGR), Granada, Spain
| | - Breige McNulty
- Institute of Food & Health, University College Dublin (UCD), Dublin, Ireland
| | - Lorenza Mistura
- Centro di ricerca Alimenti e Nutrizione, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Rome, Italy
| | - Anne Nugent
- Institute of Food & Health, University College Dublin (UCD), Dublin, Ireland
| | | | - Luisa Oliveira
- Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | | | - Gemma Perelló
- Laboratory of toxicology and environmental health, Universitat Rovira i Virgili (URV), Tarragona, Spain
| | - Marina Pite
- Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | - Karl Presser
- Department of Computer Science (ETH), ETH Zurich, Zurich, Switzerland
| | | | - Elsa Vasco
- Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal
| | - Jean-Luc Volatier
- Agence Nationale de Securité Sanitaire de l’Alim. de l’Environnement (ANSES), Paris, France
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11
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Abstract
From aircraft to electronic devices, and even in Formula One cars, stress is the main cause of degraded material performance and mechanical failure in applications incorporating thin films and coatings. Over the last two decades, the scientific community has searched for the mechanisms responsible for stress generation in films, with no consensus in sight. The main difficulty is that most current models of stress generation, while atomistic in nature, are based on macroscopic measurements. Here, we demonstrate a novel method for mapping the stress at the surface of polycrystals with sub-10 nm spatial resolution. This method consists of transforming elastic modulus maps measured by atomic force microscopy techniques into stress maps via the local stress-stiffening effect. The validity of this approach is supported by finite element modeling simulations. Our study reveals a strongly heterogeneous distribution of intrinsic stress in polycrystalline Au films, with gradients as high as 100 MPa nm-1 near the grain boundaries. Consequently, our study discloses the limited capacity of macroscopic stress assessments and standard tests to discriminate among models, and the great potential of nanometer-scale stress mapping.
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Affiliation(s)
- C Polop
- Departamento de Física de la Materia Condensada and Instituto Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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12
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Abstract
Objectives To characterize the most common peripheral and central neurological disorders during pregnancy. Methods Original research and review of the literature on neurological complications during pregnancy. We searched for keywords related to the topic on different databases. Results Pregnancy involves physiological changes that can trigger peripheral neurological and/or central nervous system pathologies, which can sometimes be associated with hypertensive disorders. A definitive diagnosis of neurological disorders can be made according to the trimester of pregnancy and the clinical findings. Carpal tunnel syndrome and peripheral facial palsy are common peripheral neurological disorders, more frequent in the second half of pregnancy. Central nervous disorders are more complex and a precise diagnosis must be made in order to improve perinatal outcomes, provide correct management and treatment and to prevent acute and long-term complications. Conclusions It is possible to achieve a precise diagnosis, management and treatment of neurological disorders during pregnancy, but these require a multidisciplinary approach, crucial to improve perinatal outcomes.
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Affiliation(s)
- Zita Ferraz
- Obstetrics Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Joana Parra
- Neurology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Ana Luísa Areia
- Obstetrics Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
| | - Elsa Vasco
- Obstetrics Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Paulo Moura
- Obstetrics Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
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13
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Sargaço B, Serra C, Vasco E. Validation of an HPLC-DAD/UV method for the quantification of cyclamate in tabletop sweeteners: risk of exceeding the acceptable daily intake. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2017; 34:883-890. [DOI: 10.1080/19440049.2017.1306756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- B. Sargaço
- Chemical Engineering and Biotechnology Research Center, Chemical Engineering Department, High Institute of Engineering of Lisbon, Lisbon, Portugal
| | - C. Serra
- Chemical Engineering and Biotechnology Research Center, Chemical Engineering Department, High Institute of Engineering of Lisbon, Lisbon, Portugal
| | - E. Vasco
- Food and Nutrition Department, National Health Institute Dr. Ricardo Jorge, Lisbon, Portugal
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14
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Dofkova M, Nurmi T, Berg K, Reykdal Ó, Gunnlaugsdóttir H, Vasco E, Dias MG, Blahova J, Rehurkova I, Putkonen T, Ritvanen T, Lindtner O, Desnica N, Jörundsdóttir HÓ, Oliveira L, Ruprich J. Development of harmonised food and sample lists for total diet studies in five European countries. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:933-44. [DOI: 10.1080/19440049.2016.1189770] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Marcela Dofkova
- Centre for Health, Nutrition and Food, National Institute of Public Health, Brno, Czech Republic
| | - Tanja Nurmi
- Research and Laboratory Department, Finnish Food Safety Authority Evira, Helsinki, Finland
| | - Katharina Berg
- Exposure Department, BfR, Federal Institute for Risk Assessment, Berlin, Germany
| | - Ólafur Reykdal
- Matís Ltd, Icelandic Food and Biotech R&D, Reykjavik, Iceland
| | | | - Elsa Vasco
- Food and Nutrition Department, INSA, National Health Institute Doutor Ricardo Jorge, Lisbon, Portugal
| | - Maria Graça Dias
- Food and Nutrition Department, INSA, National Health Institute Doutor Ricardo Jorge, Lisbon, Portugal
| | - Jitka Blahova
- Centre for Health, Nutrition and Food, National Institute of Public Health, Brno, Czech Republic
| | - Irena Rehurkova
- Centre for Health, Nutrition and Food, National Institute of Public Health, Brno, Czech Republic
| | - Tiina Putkonen
- Chemicals Department, Finnish Safety and Chemicals Agency, Helsinki, Finland
| | - Tiina Ritvanen
- Research and Laboratory Department, Finnish Food Safety Authority Evira, Helsinki, Finland
| | - Oliver Lindtner
- Exposure Department, BfR, Federal Institute for Risk Assessment, Berlin, Germany
| | - Natasa Desnica
- Matís Ltd, Icelandic Food and Biotech R&D, Reykjavik, Iceland
| | | | - Luísa Oliveira
- Food and Nutrition Department, INSA, National Health Institute Doutor Ricardo Jorge, Lisbon, Portugal
| | - Jiri Ruprich
- Centre for Health, Nutrition and Food, National Institute of Public Health, Brno, Czech Republic
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15
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Assunção R, Vasco E, Nunes B, Loureiro S, Martins C, Alvito P. Single-compound and cumulative risk assessment of mycotoxins present in breakfast cereals consumed by children from Lisbon region, Portugal. Food Chem Toxicol 2015; 86:274-81. [PMID: 26545619 DOI: 10.1016/j.fct.2015.10.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/26/2015] [Accepted: 10/27/2015] [Indexed: 11/30/2022]
Abstract
Humans can be exposed to multiple chemicals, but current risk assessment is usually carried out on one chemical at a time. Mycotoxins are commonly found in a variety of foods including those intended to consumption by children namely breakfast cereals. The present study aims to perform, the risk assessment of single and multiple mycotoxins present in breakfast cereals consumed by children (1-3 years old) from Lisbon region, Portugal. Daily exposure of children to ochratoxin A, fumonisins and trichothecenes showed no health risks to the children population considering individual mycotoxins, while exposure to aflatoxin B1 (AFB1) suggested a potential health concern for the high percentiles of intake (P90, P95 and P99). The combined exposure to fumonisins and trichothecenes are not expected to be of health concern. The combined margin of exposure (MoET) for the aflatoxins group could constitute a potential health concern and AFB1 was the main contributor for MoET. Legal limits and control strategies regarding the presence of multiple mycotoxins in foodstuffs is an urgent need. To the best of our knowledge, this is the first time a cumulative risk assessment was performed on multiple mycotoxins present in breakfast cereals consumed by children.
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Affiliation(s)
- Ricardo Assunção
- Food and Nutrition Department, National Institute of Health Dr. Ricardo Jorge, Portugal; Universidade de Évora, Portugal; Centre for Environmental and Marine Studies, Faculty of Sciences, University of Lisbon, Portugal
| | - Elsa Vasco
- Food and Nutrition Department, National Institute of Health Dr. Ricardo Jorge, Portugal
| | - Baltazar Nunes
- Department of Epidemiology, National Institute of Health Dr. Ricardo Jorge, Portugal; National School of Public Health, New University of Lisbon, Portugal
| | - Susana Loureiro
- Department of Biology & CESAM, Centre for Environmental and Marine Studies, University of Aveiro, Portugal
| | - Carla Martins
- Food and Nutrition Department, National Institute of Health Dr. Ricardo Jorge, Portugal
| | - Paula Alvito
- Food and Nutrition Department, National Institute of Health Dr. Ricardo Jorge, Portugal; Centre for Environmental and Marine Studies, Faculty of Sciences, University of Lisbon, Portugal.
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16
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Alvito P, Assunção R, Borges T, Leal S, Loureiro S, Louro H, Martins C, Nunes B, Silva M, Vasco E, Tavares A, Calhau M. Risk assessment of multiple mycotoxins in infant food consumed by Portuguese children – The contribute of the MYCOMIX project. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Martins C, Vasco E, Paixão E, Alvito P. Total mercury in infant food, occurrence and exposure assessment in Portugal. Food Addit Contam Part B Surveill 2013; 6:151-7. [PMID: 24779897 DOI: 10.1080/19393210.2013.775603] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Commercial infant food labelled as from organic and conventional origin (n = 87) was analysed for total mercury content using a direct mercury analyser (DMA). Median contents of mercury were 0.50, 0.50 and 0.40 μg kg⁻¹ for processed cereal-based food, infant formulae and baby foods, respectively, with a maximum value of 19.56 μg kg⁻¹ in a baby food containing fish. Processed cereal-based food samples showed statistically significant differences for mercury content between organic and conventional analysed products. Consumption of commercial infant food analysed did not pose a risk to infants when the provisionally tolerable weekly intake (PTWI) for food other than fish and shellfish was considered. By the contrary, a risk to some infants could not be excluded when using the PTWI for fish and shellfish. This is the first study reporting contents of total mercury in commercial infant food from both farming systems and the first on exposure assessment of children to mercury in Portugal.
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Affiliation(s)
- Carla Martins
- a Food and Nutrition Department , National Health Institute Doutor Ricardo Jorge, IP , Lisbon , Portugal
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18
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González-González A, Polop C, Vasco E. Postcoalescence evolution of growth stress in polycrystalline films. Phys Rev Lett 2013; 110:056101. [PMID: 23414037 DOI: 10.1103/physrevlett.110.056101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 12/03/2012] [Indexed: 06/01/2023]
Abstract
The growth stress generated once grains coalesce in Volmer-Weber-type thin films is investigated by time-multiscale simulations comprising complementary modules of (i) finite-element modeling to address the interactions between grains happening at atomic vibration time scales (~0.1 ps), (ii) dynamic scaling to account for the surface stress relaxation via morphology changes at surface diffusion time scales (~μs-ms), and (iii) the mesoscopic rate equation approach to simulate the bulk stress relaxation at deposition time scales (~sec-h). On the basis of addressing the main experimental evidence reported so far on the topic dealt with, the simulation results provide key findings concerning the interplay between anisotropic grain interactions at complementary space scales, deposition conditions (such as flux and mobility), and mechanisms of stress accommodation-relaxation, which underlies the origin, nature and spatial distribution, and the flux dependence of the postcoalescence growth stress.
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Affiliation(s)
- A González-González
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain.
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19
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Raposo S, Carvalho M, Ferreira A, Campos S, Vasco E, Bento N, Pais M, Jardim O, Moura P. P16. Uterine artery Doppler ultrasonography and pre-eclampsia. Pregnancy Hypertens 2011; 1:280-1. [DOI: 10.1016/j.preghy.2011.08.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Domingues AP, Fonseca E, Vasco E, Moura P. Should apparently uncomplicated monochorionic twins be delivered electively at 32 weeks? J Matern Fetal Neonatal Med 2010; 22:1077-80. [DOI: 10.3109/14767050903042579] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Vasco E, Polop C, Sacedón JL. Reducing the surface roughness beyond the pulsed-laser-deposition limit. Phys Rev E 2009; 80:041604. [PMID: 19905318 DOI: 10.1103/physreve.80.041604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 09/08/2009] [Indexed: 11/07/2022]
Abstract
Here, we outline the theoretical fundamentals of a promising growth kinetics of films from the vapor phase, in which pulsed fluxes are combined with temperature transients to enable short-range surface relaxations (e.g., species rearrangements) and to inhibit long-range relaxations (atomic exchange between species). A group of physical techniques (fully pulsed thermal and/or laser depositions) based on this kinetics is developed that can be used to prepare films with roughnesses even lower than those obtained with pulsed-laser deposition, which is the physical vapor-phase deposition technique that has produced the flattest films reported so far.
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Affiliation(s)
- E Vasco
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain
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22
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Domingues AP, Fonseca E, Vasco E, Moura P. Should apparently uncomplicated monochorionic twins be delivered electively at 32 weeks? J Matern Fetal Neonatal Med 2009. [DOI: 10.1080/14767050903042579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Abstract
The growth kinetics of the mostly used physical vapor-phase deposition techniques -molecular beam epitaxy, sputtering, flash evaporation, and pulsed laser deposition-is investigated by rate equations with the aim of testing their suitability for the preparation of ultraflat ultrathin films. The techniques are studied in regard to the roughness and morphology during early stages of growth. We demonstrate that pulsed laser deposition is the best technique for preparing the flattest films due to two key features [use of (i) a supersaturated pulsed flux of (ii) hyperthermal species] that promote a kinetically limited Ostwald ripening mechanism.
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Affiliation(s)
- E Vasco
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain.
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24
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Vasco E, Sacedón JL. Role of cluster transient mobility in pulsed laser deposition-type growth kinetics. Phys Rev Lett 2007; 98:036104. [PMID: 17358699 DOI: 10.1103/physrevlett.98.036104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2006] [Indexed: 05/14/2023]
Abstract
The ballistic motion of kinetically hyperthermal clusters on corrugated potential energy surfaces is studied by molecular dynamics simulations. Under pulsed laser deposition conditions, such clusters are generated due to the supersaturation flux and nonthermal energies of the incident species, a fraction of which is transferred to the clusters. This energy transfer, together with the flattening of the potential energy surface due to the cluster inner bonds, causes a lengthening of the ballistic paths as the cluster size increases. These results help explain the enhancement of growth kinetics by pulsed laser deposition.
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Affiliation(s)
- E Vasco
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 Madrid, Spain
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25
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Abstract
This communication reports on the growth of highly uniform KNbO3 nanowires exhibiting a narrow diameter distribution around 60 nm and a length-to-width ratio up to 100. The nanowires were prepared by a hydrothermal route, which enables simple, gram-scale production. A systematic study of the synthesized nanowires in terms of the morphological and chemical characteristics was carried out by varying the temperature-pressure conditions and the composition of the starting mixture. The results indicate that highly uniform single-crystalline nanowires form within a narrow window of the ternary phase diagram of KOH-Nb2O5-H2O.
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Affiliation(s)
- A Magrez
- Laboratoire des Nanostructures et des Nouveaux Matériaux Electroniques, Institut de Physique de la Matière Complexe, Switzerland.
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26
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Vasco E, Magrez A, Forró L, Setter N. Growth Kinetics of One-Dimensional KNbO3 Nanostructures by Hydrothermal Processing Routes. J Phys Chem B 2005; 109:14331-4. [PMID: 16852802 DOI: 10.1021/jp051454r] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The growth kinetics of one-dimensional single-crystalline KNbO(3) nanostructures (nanowires and nanofingers, the latter understood as defective nanowires) prepared by hydrothermal processing routes has been theoretically studied. A model taking into account the cube-based morphology of the nanostructures, their defects as the KOH proportion in the starting solution increases, and the partial depletion of species in the solution at the kink regions is proposed. Such a model allows the morphological evolution of the nanostructures to be successfully reproduced, shedding light on the origin of their highly anisotropic growth.
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Affiliation(s)
- E Vasco
- Laboratoire de Céramique, Institut des Matériaux, Institut de Physique de la Matière Complexe, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne-EPFL, Switzerland.
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