PMID- 37820472 OWN - NLM STAT- MEDLINE DCOM- 20231103 LR - 20231103 IS - 1873-376X (Electronic) IS - 1570-0232 (Linking) VI - 1229 DP - 2023 Sep 1 TI - Determination of tamsulosin in plasma of healthy Chinese male subjects by a novel and simple LC-MS/MS method and its application to pharmacokinetic studies. PG - 123901 LID - S1570-0232(23)00311-2 [pii] LID - 10.1016/j.jchromb.2023.123901 [doi] AB - Tamsulosin, the first highly selective alpha(1)-adrenoceptor antagonist, is widely used for urination disorders caused by benign prostatic hyperplasia (BPH). The pharmacokinetics and safety of 0.2 mg tamsulosin hydrochloride sustained-release capsules were evaluated in 60 healthy Chinese male subjects under fasting and fed conditions in this study. A simple, sensitive, and robust liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated for the quantification of tamsulosin in human plasma, which has been applied to pharmacokinetic study. The analyte and internal standard (tamsulosin-d5) were extracted by protein precipitation, and separated on a ZORBAX Eclipse XDB-C18 column (4.6 x 50 mm,1.8 microm; Agilent Tech) using a gradient elution with mobile phases methanol and 5 mM ammonium acetate. The linear range was 0.05-15.0 ng/mL. It showed good selectivity in normal, hyperlipidemic, and hemolyzed blank matrices. The CV (%) of intra-batch precision was <4.4% and the RE (%) of accuracy was in the range of -5.0%-6.7%; the CV (%) of inter-batch precision was <-5.8% and the RE (%) of accuracy was in the range of 1.2%-4.0%. The mean extraction recovery for the analyte was 102.1 +/- 3.75% and for the IS was 102.2 +/- 2.00%. Two formulations were considered bioequivalent under fasting and fed conditions, and the 90% confidence intervals for the geometric mean test/reference ratios were within the predetermined range of 80%-125%. A single oral dose of 0.2 mg tamsulosin hydrochloride sustained-release capsule was well-tolerated throughout the clinical trial, and no > Grade 1 adverse events (AEs) and serious AEs occurred during the trial. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Zhong, Maolian AU - Zhong M AD - School of Pharmacy, Nanchang University, Nanchang 330006, China. FAU - Wang, Xing AU - Wang X AD - School of Pharmacy, Nanchang University, Nanchang 330006, China. FAU - Xiong, Wenqiang AU - Xiong W AD - School of Pharmacy, Nanchang University, Nanchang 330006, China. FAU - Liu, Yan AU - Liu Y AD - School of Pharmacy, Nanchang University, Nanchang 330006, China. FAU - Wang, Xiaosong AU - Wang X AD - Clinical Medicine Research Center, Jiangxi Cancer Hospital, Jiangxi Cancer Hospital of Nanchang University, Nanchang 330029, China. FAU - Yi, Xiaoyi AU - Yi X AD - Clinical Medicine Research Center, Jiangxi Cancer Hospital, Jiangxi Cancer Hospital of Nanchang University, Nanchang 330029, China. FAU - Zhang, Hong AU - Zhang H AD - Clinical Medicine Research Center, Jiangxi Cancer Hospital, Jiangxi Cancer Hospital of Nanchang University, Nanchang 330029, China; Jiangxi Clinical Research Center for Cancer, Nanchang 330029, China. Electronic address: ZLhospital@163.com. LA - eng PT - Equivalence Trial PT - Journal Article DEP - 20231004 PL - Netherlands TA - J Chromatogr B Analyt Technol Biomed Life Sci JT - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JID - 101139554 RN - 0 (Capsules) RN - 0 (Delayed-Action Preparations) RN - G3P28OML5I (Tamsulosin) SB - IM MH - Humans MH - Male MH - Capsules MH - Chromatography, Liquid MH - Delayed-Action Preparations MH - *East Asian People MH - Reproducibility of Results MH - *Tamsulosin/pharmacokinetics MH - Tandem Mass Spectrometry OTO - NOTNLM OT - LC-MS/MS OT - Pharmacokinetics OT - Protein precipitation method OT - Safety OT - Tamsulosin COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/10/12 00:43 MHDA- 2023/11/03 06:44 CRDT- 2023/10/11 18:05 PHST- 2023/08/15 00:00 [received] PHST- 2023/09/17 00:00 [revised] PHST- 2023/10/02 00:00 [accepted] PHST- 2023/11/03 06:44 [medline] PHST- 2023/10/12 00:43 [pubmed] PHST- 2023/10/11 18:05 [entrez] AID - S1570-0232(23)00311-2 [pii] AID - 10.1016/j.jchromb.2023.123901 [doi] PST - ppublish SO - J Chromatogr B Analyt Technol Biomed Life Sci. 2023 Sep 1;1229:123901. doi: 10.1016/j.jchromb.2023.123901. Epub 2023 Oct 4.