کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9753202 1494197 2005 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Differentiated quantification of human bile acids in serum by high-performance liquid chromatography-tandem mass spectrometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Differentiated quantification of human bile acids in serum by high-performance liquid chromatography-tandem mass spectrometry
چکیده انگلیسی
Determination of quantitative changes in the pattern of serum bile acids is important for the monitoring of diseases affecting bile acid metabolism. A sensitive and specific high-performance liquid chromatography (HPLC)-MS/MS method was developed for the differentiated quantification of unconjugated as well as glycine- and taurine-conjugated cholic, chenodeoxycholic (CDCA), deoxycholic (DCA), ursodeoxycholic (UDCA) and lithocholic acid (LCA) in serum samples. After solid-phase extraction and reversed-phase HPLC separation, detection of the conjugated bile acids was performed using electrospray ionization (ESI)-MS/MS and selected reaction monitoring mode, whereas unconjugated bile acids were determined by ESI-MS and selected ion monitoring mode. The within-day and between-day coefficients of variation were below 7% for all bile acids and the recovery rates of the extraction procedure were between 84.9 and 105%. The developed method was applied to a group of 21 healthy volunteers and preliminary reference intervals in serum were established. In patients with drug-induced cholestasis, an elevation of primary bile acids has been shown.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography B - Volume 826, Issues 1–2, 5 November 2005, Pages 147-159
نویسندگان
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