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A randomized trial of selenium supplementation and risk of type-2 diabetes, as assessed by plasma adiponectin
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Rayman, Margaret, Blundell-Pound, Gabrielle, Pastor-Barriuso, R., Guallar, Eliseo, Steinbrenner, Holger and Stranges, Saverio (2012) A randomized trial of selenium supplementation and risk of type-2 diabetes, as assessed by plasma adiponectin. PLoS One, Vol.7 (No.9). e45269. doi:10.1371/journal.pone.0045269
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Official URL: http://dx.doi.org/10.1371/journal.pone.0045269
Abstract
Background: Evidence that selenium affects the risk of type-2 diabetes is conflicting, with observational studies and a few randomized trials showing both lower and higher risk linked to the level of selenium intake and status. We investigated the effect of selenium supplementation on the risk of type-2 diabetes in a population of relatively low selenium status as part of the UK PRECISE (PREvention of Cancer by Intervention with SElenium) pilot study. Plasma adiponectin concentration, a recognised independent predictor of type-2 diabetes risk and known to be correlated with circulating selenoprotein P, was the biomarker chosen. Methods: In a randomized, double-blind, placebo-controlled trial, five hundred and one elderly volunteers were randomly assigned to a six-month intervention with 100, 200 or 300 μg selenium/d as high-selenium or placebo yeast. Adiponectin concentration was measured by ELISA at baseline and after six months of treatment in 473 participants with one or both plasma samples available. Results: Mean (SD) plasma selenium concentration was 88.5 ng/g (19.1) at baseline and increased significantly in the selenium-treatment groups. In baseline cross-sectional analyses, the fully adjusted geometric mean of plasma adiponectin was 14% lower (95% CI, 0-27%) in the highest than in the lowest quartile of plasma selenium (P for linear trend = 0.04). In analyses across randomized groups, however, selenium supplementation had no effect on adiponectin levels after six months of treatment (P = 0.96). Conclusions: These findings are reassuring as they did not show a diabetogenic effect of a six-month supplementation with selenium in this sample of elderly individuals of relatively low selenium status.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QP Physiology R Medicine > RC Internal medicine R Medicine > RM Therapeutics. Pharmacology |
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| Divisions: | Faculty of Medicine > Warwick Medical School > Health Sciences Faculty of Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Selenium -- Physiological effect, Non-insulin-dependent diabetes -- Susceptibility | ||||
| Journal or Publication Title: | PLoS One | ||||
| Publisher: | Public Library of Science | ||||
| ISSN: | 1932-6203 | ||||
| Official Date: | 2012 | ||||
| Dates: |
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| Volume: | Vol.7 | ||||
| Number: | No.9 | ||||
| Page Range: | e45269 | ||||
| DOI: | 10.1371/journal.pone.0045269 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Cancer Research UK (CRUK), University of Surrey, Pharma Nord (Denmark), Deutsche Forschungsgemeinschaft (DFG) | ||||
| Grant number: | STE 1782/2-2 (DFG) |
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