PMID- 15556534 OWN - NLM STAT- MEDLINE DCOM- 20050411 LR - 20061115 IS - 1570-0232 (Print) IS - 1570-0232 (Linking) VI - 813 IP - 1-2 DP - 2004 Dec 25 TI - Determination of underivatised sterols and bile acid trimethyl silyl ether methyl esters by gas chromatography-mass spectrometry-single ion monitoring in faeces. PG - 199-207 AB - A method for quantification of total faecal sterols and bile acids (BAs) in human stool by using gas chromatography-mass spectrometry-single ion monitoring (GC-MS-SIM) is described. Cholesterol, coprostanol, coprostanone, cholestanol, iso-lithocholic acid (iso-LCA), lithocholic acid (LCA), iso-deoxycholic acid (iso-DCA), deoxycholic acid (DCA), chenodeoxycholic acid (CDCA), cholic acid (CA), and 12-oxo-deoxycholic acid (12-oxo-DCA) in faeces of 86 healthy subjects were determined. The sample preparation for sterol analysis requires hydrolysis and liquid extraction from matrix, but no derivatisation. The GC-flame ionisation detection (FID) and total ion current (TIC) in GC-MS were not sufficient for sterol and BA determination, whereas selectivity and specificity of the GC-MS-SIM ensured the analysis of sterols and BAs in faeces. FAU - Keller, Sylvia AU - Keller S AD - Friedrich Schiller University, Institute of Nutrition, Dornburger Str. 24, 07743 Jena, Germany. FAU - Jahreis, Gerhard AU - Jahreis G LA - eng PT - Journal Article PL - Netherlands TA - J Chromatogr B Analyt Technol Biomed Life Sci JT - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JID - 101139554 RN - 0 (Bile Acids and Salts) RN - 0 (Esters) RN - 0 (Sterols) SB - IM MH - Bile Acids and Salts/*analysis/chemistry MH - Calibration MH - Esters/analysis MH - Feces/*chemistry MH - Gas Chromatography-Mass Spectrometry/*methods MH - Reproducibility of Results MH - Sterols/*analysis EDAT- 2004/11/24 09:00 MHDA- 2005/04/12 09:00 CRDT- 2004/11/24 09:00 PHST- 2003/03/13 00:00 [received] PHST- 2004/09/21 00:00 [accepted] PHST- 2004/11/24 09:00 [pubmed] PHST- 2005/04/12 09:00 [medline] PHST- 2004/11/24 09:00 [entrez] AID - S1570-0232(04)00781-0 [pii] AID - 10.1016/j.jchromb.2004.09.046 [doi] PST - ppublish SO - J Chromatogr B Analyt Technol Biomed Life Sci. 2004 Dec 25;813(1-2):199-207. doi: 10.1016/j.jchromb.2004.09.046.