PMID- 36895397 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230311 IS - 2405-8440 (Print) IS - 2405-8440 (Electronic) IS - 2405-8440 (Linking) VI - 9 IP - 3 DP - 2023 Mar TI - Development and validation of a novel HPLC-UV method for simultaneous determination of azathioprine metabolites in human red blood cells. PG - e13870 LID - 10.1016/j.heliyon.2023.e13870 [doi] LID - e13870 AB - A rapid, specific and accurate high-performance liquid chromatography with tunable ultraviolet detection method was developed to simultaneously determine azathioprine metabolites, 6-thioguanine nucleotides (6-TGN) and 6-methyl mercaptopurine riboside (6-MMPr) in human red blood cells. Erythrocyte lysate sample was precipitated by perchloric acid under the protection of dithiothreitol, with 6-TGN and 6-MMPr being acid hydrolyzed to produce 6-thioguanine (6-TG) and 6-methymercaptopurine (6-MMP). A Waters Cortecs C(18) column (2.1 x 150 mm, 2.7 mum) was used for chromatographic separation with a water (containing 0.01 mol/L ammonium acetate and 0.2% acetic acid)/methanol linear gradient at a flow rate of 0.45 mL/min in a 5.5 min. UV detection wavelengths were 340 nm for 6-TG, 303 nm for 6-MMP and the IS (5-bromouracil). The calibration curves fitted a least squares model (weighed 1/x (2)) from 0.15 to 15 mumol/L for 6-TG (r (2) = 0.9999) and from 1 to 100 mumol/L for 6-MMP (r (2) = 0.9998). This method was validated according to the FDA bioanalytical method validation guidance and ICH M10 bioanalytical method validation and study sample analysis guidance for industry, and successfully utilized in ten IBD patients receiving azathioprine therapy. CI - (c) 2023 Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Published by Elsevier Ltd. FAU - Yu, Hengyi AU - Yu H AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. FAU - Li, Dongyan AU - Li D AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. FAU - Xiang, Dong AU - Xiang D AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. FAU - Li, Xiping AU - Li X AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. FAU - Liu, Lu AU - Liu L AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. FAU - Liu, Dong AU - Liu D AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. FAU - Gong, Xuepeng AU - Gong X AD - Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China. LA - eng PT - Journal Article DEP - 20230221 PL - England TA - Heliyon JT - Heliyon JID - 101672560 PMC - PMC9988558 OTO - NOTNLM OT - Azathioprine OT - HPLC-UV OT - Inflammatory bowel disease OT - Therapeutic drug monitoring EDAT- 2023/03/11 06:00 MHDA- 2023/03/11 06:01 PMCR- 2023/02/21 CRDT- 2023/03/10 02:26 PHST- 2022/10/04 00:00 [received] PHST- 2023/02/06 00:00 [revised] PHST- 2023/02/14 00:00 [accepted] PHST- 2023/03/10 02:26 [entrez] PHST- 2023/03/11 06:00 [pubmed] PHST- 2023/03/11 06:01 [medline] PHST- 2023/02/21 00:00 [pmc-release] AID - S2405-8440(23)01077-0 [pii] AID - e13870 [pii] AID - 10.1016/j.heliyon.2023.e13870 [doi] PST - epublish SO - Heliyon. 2023 Feb 21;9(3):e13870. doi: 10.1016/j.heliyon.2023.e13870. eCollection 2023 Mar.