کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1223317 | 967887 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantitative determination of peptide drug in human plasma samples at low pg/ml levels using coupled column liquid chromatography-tandem mass spectrometry
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Plasma concentrations after administration of peptide drugs are often low due to the high potency often seen with this class of compounds. In this work a bioanalytical method based on coupled column liquid chromatography-tandem mass spectrometry (LC-MS/MS) is presented for quantification of a peptide drug, FE 202158, under clinical development. A volume of 0.5 ml human plasma is solid phase extracted on a weak cationic exchanger. After evaporation of the solvent to dryness, the reconstituted sample is injected into a coupled column liquid chromatography system. A heart-cut from the initial column, a cyano column, is trapped on a C4 column and thereafter injected into a microbore C18 column. For the detection a triple quadrupole mass spectrometer, equipped with a TurboIonSpray interface working in positive ion mode, is used. The design of the system is described and the gain in sensitivity and selectivity, compared to a conventional system, is discussed. Data from validation of the bioanalytical method are presented. For human plasma samples a lower limit of quantification (LLOQ) of 5.00 pg/ml (=4.77 pmol/l) was achieved. The inter-assay precision was less than 11% and bias was within ±4% over the whole validated range of 5.00-860 pg/ml.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical and Biomedical Analysis - Volume 53, Issue 3, 2 November 2010, Pages 537-545
Journal: Journal of Pharmaceutical and Biomedical Analysis - Volume 53, Issue 3, 2 November 2010, Pages 537-545
نویسندگان
Ulf Lövgren, Sara Johansson, Lasse Skov Jensen, Carina Ekström, Alf Carlshaf,