Type

Journal Article

Authors

Michael J Gibney
Desmond G Higgins
Ailís Fagan
Augustin Scalbert
Jean-Louis Sébédio
Estelle Pujos-Guillot
Lorraine Brennan
Marianne C Walsh

Subjects

Chemistry

Topics
urban population urine nuclear magnetic resonance biomolecular humans adult fruit female vegetables chemistry principal component analysis diet random allocation spectrometry mass electrospray ionization male

Influence of acute phytochemical intake on human urinary metabolomic profiles. (2007)

Abstract Diversity in dietary intake contributes to variation in human metabolomic profiles and artifacts from acute dietary intake can affect metabolomics data. We investigated the role of dietary phytochemicals on shaping human urinary metabolomic profiles. First void urine samples were collected from 21 healthy volunteers (12 women, 9 men) following their normal diet (ND), a 2-d low-phytochemical diet (LPD), or a 2-d standard phytochemical diet (SPD). Nutrient intake was assessed during the study. Urine samples were analyzed by using (1)H nuclear magnetic resonance spectroscopy ((1)H NMR) and mass spectrometry (MS), which was followed by multivariate data analysis. Macronutrient intake did not change throughout the study. Partial least-squares-discriminant analysis indicated a clear distinction between the LPD samples and the ND and SPD samples, relating to creatinine and methylhistidine excretion after the LPD and hippurate excretion after the ND and SPD. The predictive power of the LPD versus the ND model was 74 +/- 3% and 82 +/- 6% with the (1)H NMR and MS data sets, respectively. The predictive power of the LPD versus the SPD model was 83 +/- 8% and 69 +/- 4% for the (1)H NMR and MS data sets respectively. A cross platform comparison of both data sets by co-inertia analysis showed a similar distinction between the LPD and SPD. Acute changes in urinary metabolomic profiles occur after the consumption of dietary phytochemicals. Dietary restrictions in the 24 h before sample collection may reduce diversity in phytochemical intakes and therefore reduce variation and improve data interpretation in metabolomics studies using urine.
Collections Ireland -> University College Dublin -> PubMed

Full list of authors on original publication

Michael J Gibney, Desmond G Higgins, Ailís Fagan, Augustin Scalbert, Jean-Louis Sébédio, Estelle Pujos-Guillot, Lorraine Brennan, Marianne C Walsh

Experts in our system

1
Michael J Gibney
University College Dublin
Total Publications: 102
 
2
Desmond G Higgins
University College Dublin
Total Publications: 76
 
3
Ailís Fagan
Royal College of Surgeons in Ireland
Total Publications: 13
 
4
Lorraine Brennan
University College Dublin
Total Publications: 166
 
5
Marianne C Walsh
University College Dublin
Total Publications: 51