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- aggregation classification "A1".
- aggregation creator B538253.
- aggregation creator B538254.
- aggregation creator person.
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- aggregation date "2011".
- aggregation format "application/pdf".
- aggregation hasFormat 1218442.bibtex.
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- aggregation isPartOf urn:issn:1944-0049.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Chemistry".
- aggregation title "Ultra-high performance liquid chromatography coupled to triple quadrupole mass spectrometry detection of naturally occurring thiouracil in urine of untreated livestock, domesticated animals and humans".
- aggregation abstract "Thiouracil belongs to the xenobiotic thyreostats, which are growth-promoting agents illegally used in animal production. Recently it has been reported that thiouracil is suspected to have a natural origin. The European Union of Reference Laboratory guidance paper of 2007 acknowledged this by stating that thiouracil concentrations below 10 mu g l-1 might have a natural origin derived from the consumption of Brassicaceae. The present research aimed at endorsing this possible natural occurrence. Urine samples of animals (livestock and domesticated) with known and unknown clinical backgrounds were analysed for thiouracil with a newly developed ultra-high performance liquid chromatography coupled to a triple quadrupole mass spectrometric analysis method without derivatisation. In addition, a small-scale 9-day human experiment with Brassicaceae vegetables was performed to investigate if this natural prevalence could be extrapolated to the human population. The untreated animals had thiouracil concentrations below 10 mu g l-1 acknowledging the alleged natural occurrence of thiouracil. As for the humans, in 66.7% of the urine samples thiouracil was found above the CC of 2.2 mu g l-1. However, the correlation with the Brassicaceae diet proved to be non-significant (p = 0.095). Nevertheless, these results clearly demonstrate the natural occurrence of thiouracil in urine of animals and humans. The exact origin of this natural thiouracil trace still needs to be identified.".
- aggregation authorList BK886756.
- aggregation endPage "172".
- aggregation issue "2".
- aggregation startPage "166".
- aggregation volume "28".
- aggregation aggregates 1218451.
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- aggregation similarTo 19440049.2010.544681.
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