کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1969841 1538894 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous determination of tryptophan, kynurenine and 5-hydroxytryptamine by HPLC: Application in uremic patients undergoing hemodialysis
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Simultaneous determination of tryptophan, kynurenine and 5-hydroxytryptamine by HPLC: Application in uremic patients undergoing hemodialysis
چکیده انگلیسی

ObjectivesTo develop a reliable HPLC method for the simultaneous determination of plasma tryptophan, kynurenine and 5-hydroxytryptamine to analyze tryptophan metabolism.Design and methodsSeparation was carried out on a C8 column with the mobile phase composed of acetate buffer (pH 4.5) and acetonitrile using theophylline as internal standard. The eluates were monitored by ultraviolet detection with programmed wavelength.ResultsAnalysis was achieved in less than 8.0 min. The limits of quantification were 3.97 μmol/L, 4.36 nmol/L and 0.421 μmol/L for tryptophan, 5-hydroxytryptamine and kynurenine, respectively. Reproducibility and recovery were satisfactory. Twenty healthy adults and 20 uremic patients undergoing hemodialysis were analyzed using the present method. Tryptophan metabolism was found to be disturbed in uremic patients and was improved obviously after hemodialysis.ConclusionsThe developed HPLC method is simple, reliable and suitable for monitoring tryptophan metabolism in uremic patients undergoing hemodialysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Biochemistry - Volume 44, Issues 2–3, February 2011, Pages 226–230
نویسندگان
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