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Home » Evidences » Biomarkers » Dietary intake patterns are reflected in metabolomic profiles: potential role in dietary assessment studies.

Dietary intake patterns are reflected in metabolomic profiles: potential role in dietary assessment studies.

Submitted by admin on Tue, 08/21/2018 - 17:39

Author(s):

O'Sullivan, A., et al.

Year Published:

2011

Journal:

American Journal of Clinical Nutrition

Categories:

Biomarkers

Link to Abstract Summary:

https://www.ncbi.nlm.nih.gov/pubmed/21177801

Abstract:

BACKGROUND: It has been suggested that metabolomics could play a role in dietary assessment and identification of novel biomarkers of dietary intake. OBJECTIVE: This study examined the link between habitual dietary patterns and metabolomic profiles. DESIGN: A total of 160 volunteers participated in a double-blind, randomized, placebo-controlled dietary intervention. We collected biofluids and recorded 3-d food diaries. Food data were reduced to 33 food groups, and a k-means cluster analysis was performed to identify dietary patterns. (1)H Nuclear magnetic resonance (NMR) spectra were acquired for plasma and urine samples, and gas chromatography was used for plasma fatty acid profiling. RESULTS: Cluster analysis identified 3 distinct dietary patterns on the basis of the energy contribution of different food groups. Dietary clusters were reflected in plasma fatty acid profiles and in metabolomic data. (1)H NMR spectra of urine allowed the identification of metabolites associated with different dietary patterns. Several of the metabolites identified were linked to the intake of specific food groups; in particular, there was a positive association between O-acetylcarnitine and phenylacetylglutamine and red-meat and vegetable intakes, respectively. CONCLUSIONS: Habitual dietary patterns are shown in metabolomic data. This approach successfully identified potential biomarkers of red-meat and vegetable intakes.

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