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- Czauderna, M., et al.
(författare)
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Improved lipid saponification for chromatographic quantification of fatty acids in porcine erythrocytes - an important lipidomic biomarker of the effectiveness of dietary fat supplementation in pigs as a large animal model for human studies
- 2023
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Ingår i: Journal of Animal and Feed Sciences. - 1230-1388. ; 32:4, s. 385-399
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Tidskriftsartikel (refereegranskat)abstract
- The objectives of our study were to enhance and evaluate an improved saponification method for the quantification of fatty acids (FA), with a specific focus on highly-unsaturated long-chain polyunsaturated FA (LPUFA) that are easily peroxidised in pig erythrocytes. These erythrocytes serve as a valuable large animal model for human studies. We implemented a modified saponification procedure, involving a shorter initial saponification at 95 °C for 2 min, followed by overnight saponification at 22-25 °C, and subsequent gentle base and acid-catalysed methylation of FA. These analytical procedures proved to be suitable for gas-chromatographic analysis of highly-unsaturated LPUFA, which are prone to peroxidation in processed piglet erythrocytes. The modified initial saponification at 95 °C, followed by overnight saponification at 22-25 °C, and subsequent methylation, were used to assess the suitability of erythrocytes for the determination of FA, tocopherol and malondialdehyde (MDA) concentrations in monogastric mammalian tissues. The content of docosahexaenoic acid (DHA) in erythrocytes can serve as a marker for DHA bioaccumulation in animal tissues and dietary contents of n-3LPUFA (especially DHA). The concentrations of δ-, γ-, α-tocopherols, total cholesterol and MDA increased in piglet erythrocytes during 16 days of exposure to dietary fat. The levels of FA and tocopherols can therefore be used in erythrocytes as indicators of the bioaccumulation yield of these compounds in animal tissues. Additionally, we propose that FA and tocopherol profiles in erythrocytes may be used as indicators of the concentrations of these components in diets and the effectiveness of their bioaccumulation in animal tissues.
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- Frisch, M, et al.
(författare)
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Cultural bias in the AAP's 2012 Technical Report and Policy Statement on male circumcision
- 2013
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Ingår i: Pediatrics. - : American Academy of Pediatrics (AAP). - 1098-4275 .- 0031-4005. ; 131:4, s. 796-800
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Tidskriftsartikel (refereegranskat)abstract
- The American Academy of Pediatrics recently released its new Technical Report and Policy Statement on male circumcision, concluding that current evidence indicates that the health benefits of newborn male circumcision outweigh the risks. The technical report is based on the scrutiny of a large number of complex scientific articles. Therefore, while striving for objectivity, the conclusions drawn by the 8 task force members reflect what these individual physicians perceived as trustworthy evidence. Seen from the outside, cultural bias reflecting the normality of nontherapeutic male circumcision in the United States seems obvious, and the report’s conclusions are different from those reached by physicians in other parts of the Western world, including Europe, Canada, and Australia. In this commentary, a different view is presented by non–US-based physicians and representatives of general medical associations and societies for pediatrics, pediatric surgery, and pediatric urology in Northern Europe. To these authors, only 1 of the arguments put forward by the American Academy of Pediatrics has some theoretical relevance in relation to infant male circumcision; namely, the possible protection against urinary tract infections in infant boys, which can easily be treated with antibiotics without tissue loss. The other claimed health benefits, including protection against HIV/AIDS, genital herpes, genital warts, and penile cancer, are questionable, weak, and likely to have little public health relevance in a Western context, and they do not represent compelling reasons for surgery before boys are old enough to decide for themselves.
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- Ostaszewski, Marek, et al.
(författare)
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COVID19 Disease Map, a computational knowledge repository of virus-host interaction mechanisms
- 2021
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Ingår i: Molecular Systems Biology. - : John Wiley & Sons. - 1744-4292 .- 1744-4292. ; 17:10
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Tidskriftsartikel (refereegranskat)abstract
- We need to effectively combine the knowledge from surging literature with complex datasets to propose mechanistic models of SARS-CoV-2 infection, improving data interpretation and predicting key targets of intervention. Here, we describe a large-scale community effort to build an open access, interoperable and computable repository of COVID-19 molecular mechanisms. The COVID-19 Disease Map (C19DMap) is a graphical, interactive representation of disease-relevant molecular mechanisms linking many knowledge sources. Notably, it is a computational resource for graph-based analyses and disease modelling. To this end, we established a framework of tools, platforms and guidelines necessary for a multifaceted community of biocurators, domain experts, bioinformaticians and computational biologists. The diagrams of the C19DMap, curated from the literature, are integrated with relevant interaction and text mining databases. We demonstrate the application of network analysis and modelling approaches by concrete examples to highlight new testable hypotheses. This framework helps to find signatures of SARS-CoV-2 predisposition, treatment response or prioritisation of drug candidates. Such an approach may help deal with new waves of COVID-19 or similar pandemics in the long-term perspective.
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- Pritchard-Jones, K, et al.
(författare)
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The state of research into children with cancer across Europe : new policies for a new decade
- 2011
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Ingår i: ecancermedicalscience. - : Ecancer Global Foundation. - 1754-6605. ; 5, s. 210-
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Tidskriftsartikel (refereegranskat)abstract
- Overcoming childhood cancers is critically dependent on the state of research. Understanding how, with whom and what the research community is doing with childhood cancers is essential for ensuring the evidence-based policies at national and European level to support children, their families and researchers. As part of the European Union funded EUROCANCERCOMS project to study and integrate cancer communications across Europe, we have carried out new research into the state of research in childhood cancers. We are very grateful for all the support we have received from colleagues in the European paediatric oncology community, and in particular from Edel Fitzgerald and Samira Essiaf from the SIOP Europe office. This report and the evidence-based policies that arise from it come at a important junction for Europe and its Member States. They provide a timely reminder that research into childhood cancers is critical and needs sustainable long-term support.
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