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Nutrients 2015, 7(1), 608-624; doi:10.3390/nu7010608

The Effect on Selenium Concentrations of a Randomized Intervention with Fish and Mussels in a Population with Relatively Low Habitual Dietary Selenium Intake

1
Danish Cancer Society Research Center, Diet, Genes, and Environment, Strandboulevarden 49, DK-2100 Copenhagen Ø, Denmark
2
Division of Food Chemistry, National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark
3
Danish Cancer Society Research Center, Statistics, Bioinformatics and Registry, Strandboulevarden 49, DK-2100 Copenhagen Ø, Denmark
4
Section for Epidemiology, Department of Public Health, Aarhus University, Bartholins Allé 2, DK-8000 Aarhus C, Denmark
5
Department of Cardiology, Aalborg University Hospital, Hobrovej 18–22, DK-9100 Aalborg, Denmark 
*
Author to whom correspondence should be addressed.
Received: 12 September 2014 / Accepted: 7 January 2015 / Published: 15 January 2015
(This article belongs to the Special Issue Dietary Selenium and Human Health)
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Abstract

Selenium status of the Danish population is below that assumed optimal for the suggested protective effects against chronic diseases, including certain cancers. Fish and shellfish are important dietary sources of selenium in Denmark. We investigated the effect of increased fish and mussel intake on selenium blood concentrations in a population with relatively low habitual dietary selenium intake. We randomly assigned 102 healthy men and women (all non-smokers) aged 48–76 years to an intervention group (n = 51) or a control group (n = 51). Intervention participants received 1000 g fish and mussels/week for 26 weeks (~50 μg selenium/day). Controls received no intervention. Non-fasting blood samples were taken and whole blood selenium was determined using inductively coupled plasma-mass spectrometry (ICP-MS), and plasma selenoprotein P (SelP) was determined by high performance liquid chromatography coupled to ICP-MS. All available observations were included in linear multiple regression analysis to evaluate the effect of the intervention. The difference in mean change for intervention compared with control persons was 14.9 ng/mL (95% CI: 10.2, 19.7) for whole blood selenium, and 7.0 ng/mL (95% CI: 3.1, 10.9) for plasma SelP (Weeks 0–26). Selenium concentrations were significantly increased after 26 weeks of intervention, albeit to a lower degree than expected. View Full-Text
Keywords: fish; intervention; mussels; randomized; selenium; selenoprotein P; shellfish fish; intervention; mussels; randomized; selenium; selenoprotein P; shellfish
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Outzen, M.; Tjønneland, A.; Larsen, E.H.; Andersen, K.K.; Christensen, J.; Overvad, K.; Olsen, A. The Effect on Selenium Concentrations of a Randomized Intervention with Fish and Mussels in a Population with Relatively Low Habitual Dietary Selenium Intake. Nutrients 2015, 7, 608-624.

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