Publications by authors named "Xi-Bo Luo"
Background: To provide a more comprehensive clinic marker of tryptophan (TRP) catabolism in patients with systemic lupus erythematosus (SLE), we developed a simple and efficient method that simultaneously measured serum TRP, kynurenine (KYN), and kynurenic acid (KYNA) using high performance liquid chromatography with fluorescence detection (HPLC-FD).
Methods: A simple and specific high performance liquid chromatography (HPLC) method was developed for simultaneously quantitative determination of TRP, KYN and KYNA with fluorescence detection (FD) using programmed wavelength and on-column fluorescence derivatization. Thirty patients with SLE and 80 healthy control subjects were analyzed for serum TRP metabolites using the assay we developed.
Objective: To describe a simple, rapid, and sensitive HPLC method for simultaneous determination of TRP and KYNA in human serum.
Design And Method: Samples were deproteinized by perchloric acid. KYNA was detected at 344 nm of excitation wavelength and 404 nm of emission wavelength, TRP was detected at 254 nm and 404 nm, with a total run time of 13 min per sample.