Document Detail


Liquid chromatography-mass spectrometry analysis of hydroxylated polycyclic aromatic hydrocarbons, formed in a simulator of the human gastrointestinal tract.
MedLine Citation:
PMID:  15171935     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Described is a liquid chromatography-mass spectrometry (LC-MS) procedure for the determination of hydroxylated biotransformation products of polycyclic aromatic hydrocarbons (PAH) in the human gastrointestinal tract. The formation of hydroxylated PAHs was monitored upon incubation of PAHs with colon microbiota from the Simulator of the Human Intestinal Microbial Ecosystem (SHIME). The analytical method consisted of a biomass removal step followed by a solid phase extraction (SPE) step using C18 packed columns to remove non-digested food compounds and microbial metabolites that interfere with the detection of the target compounds. For quantification, 9-hydroxyphenanthrene (13)C(6)was used as the internal standard. The detection limits of the hydroxylated PAHs were generally in the range 0.36-14.09 microg x l(-1), based on a signal/noise ratio of 3:1. The recovery of hydroxylated PAHs in intestinal suspension was variable ranging from 45 to 107%, with relative standard deviation (R.S.D.) between 5 and 17%. The analytical procedure was used to show the microbial production of 1-hydroxypyrene and 7-hydroxybenzo(a)pyrene, metabolites that may give colon incubated PAHs bioactive properties.
Authors:
Tom R Van de Wiele; Kerry M Peru; W Verstraete; Steven D Siciliano; John V Headley
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of chromatography. B, Analytical technologies in the biomedical and life sciences     Volume:  806     ISSN:  1570-0232     ISO Abbreviation:  J. Chromatogr. B Analyt. Technol. Biomed. Life Sci.     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-06-02     Completed Date:  2005-02-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101139554     Medline TA:  J Chromatogr B Analyt Technol Biomed Life Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  245-53     Citation Subset:  IM    
Affiliation:
Laboratory Microbial Ecology and Technology (LabMET), Ghent University, Ghent, Belgium.
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MeSH Terms
Descriptor/Qualifier:
Calibration
Chromatography, High Pressure Liquid / methods*
Gastrointestinal Tract / chemistry*
Humans
Hydroxylation
Mass Spectrometry / methods*
Polycyclic Compounds / analysis*
Sensitivity and Specificity
Chemical
Reg. No./Substance:
0/Polycyclic Compounds

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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