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Huang YW, Ding L, Chen Y, Lin W, Lin F, Hsieh Y. 2-μm fused-core column ultra-high-performance liquid chromatography/tandem mass spectrometric determination of donepezil in human plasma: Application to a bioequivalence study. J Pharm Biomed Anal 2022; 211:114596. [DOI: 10.1016/j.jpba.2022.114596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/10/2022] [Accepted: 01/13/2022] [Indexed: 11/27/2022]
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Huang YW, Ding L, Chen YM, Lin WC, Lin F, Hsieh Y. Ultrafast liquid chromatography-tandem mass spectrometry determination of donepezil in human plasma: application to a bioequivalence study. Transl Clin Pharmacol 2022; 30:37-48. [PMID: 35419315 PMCID: PMC8979757 DOI: 10.12793/tcp.2022.30.e1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/19/2021] [Accepted: 01/25/2022] [Indexed: 11/28/2022] Open
Abstract
A liquid chromatography equipped with tandem mass spectrometric method using multi-stage flow rates was developed for the determination of donepezil in human plasma to support a randomized, crossover bioequivalence (BE) study in which healthy volunteers each received a single oral dose of the reference and test formulations of 10 mg donepezil hydrochloride. This integrated liquid chromatography with tandem mass spectrometry (LC-MS/MS) system with electrospray ionization and a deuterium-labeled internal standard (IS) were employed for the positive multiple-reaction-monitoring (MRM) analyses. The baseline separation using a high-resolution monolithic column under gradient and flexible flowrate conditions between donepezil and multiple interfering peaks from the extracted quality control, calibration standard and study plasma samples following simple protein precipitation extraction procedures was accomplished within 1.5 minutes. The ultrafast monolithic column performance in terms of chromatographic separation efficiency, peak asymmetry and resolution and retention time reproducibility was found to be sustainable. The linear dynamic range was detected over a concentration range of 0.2–50 ng/mL. The intra- and inter-day assay accuracy and precision were within 15% for the analyte in individual biological fluids. A positive correlation coefficient (r) greater than 0.995 for donepezil concentrations in study plasma samplers measured by the proposed and the other validated LC-MS/MS methods in support of a bioequivalence study was observed.
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Affiliation(s)
- Yan-Wen Huang
- Department of Pharmaceutical Analysis, Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Li Ding
- Department of Pharmaceutical Analysis, Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yuan-Ming Chen
- Phase I Clinical Center of Taizhou Hospital, ANSER Medical Technology, Zhejiang 317000, P. R. China
| | - Wei-chen Lin
- Phase I Clinical Center of Taizhou Hospital, ANSER Medical Technology, Zhejiang 317000, P. R. China
| | - Fei Lin
- Phase I Clinical Center of Taizhou Hospital, ANSER Medical Technology, Zhejiang 317000, P. R. China
| | - Yunsheng Hsieh
- Phase I Clinical Center of Taizhou Hospital, ANSER Medical Technology, Zhejiang 317000, P. R. China
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Panganiban C, Narsai T, Reeder D, Naderi A, Levy D, Hsieh Y, Wang B, Jean T. M152 SCHNITZLER’S SYNDROME: A RARE MIMICKER OF CHRONIC URTICARIA. Ann Allergy Asthma Immunol 2020. [DOI: 10.1016/j.anai.2020.08.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ziyar A, Gharib A, Jean T, Hsieh Y, Levy D. M152 TREATMENT OF DELAYED PRESSURE ANGIOEDEMA WITH OMALIZUMAB IN A 40-YEAR-OLD WOMAN. Ann Allergy Asthma Immunol 2019. [DOI: 10.1016/j.anai.2019.08.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hughes M, Lin C, Chiu P, Hsieh Y, Shieh S, Wong T, Chuong C. 1297 Lanyu pig skin pigment regeneration model. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lin Y, Wang P, Lin C, Sadrawi M, Lin C, Hsieh Y, Kuo C, Chien J, Haraikawa K, Abbod MF, Shieh J. 0331 Apnea Recognition in Wearable Device using the Intensive Evaluation of the ECG Power Spectral Density. Sleep 2018. [DOI: 10.1093/sleep/zsy061.330] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y Lin
- Healthcare and Beauty RD Center, Cal-Comp Inc., New Taipei City, TAIWAN
| | - P Wang
- Thoracic Division, Department of Internal Medicine, Far Eastern Memorial Hospital., New Taipei City, TAIWAN
- Oriental Institute of Technology, New Taipei City, TAIWAN
| | - C Lin
- Thoracic Division, Department of Internal Medicine, Far Eastern Memorial Hospital., New Taipei City, TAIWAN
| | - M Sadrawi
- Department of Mechanical Engineering and Innovation Center for Big Data and Digital Convergence, Yuan Ze University, Taoyuan, TAIWAN
| | - C Lin
- Healthcare and Beauty RD Center,Kinpo Electronics Inc., New Taipei City, TAIWAN
| | - Y Hsieh
- Healthcare and Beauty RD Center, Cal-Comp Inc., New Taipei City, TAIWAN
| | - C Kuo
- Healthcare and Beauty RD Center, Cal-Comp Inc., New Taipei City, TAIWAN
| | - J Chien
- Healthcare and Beauty RD Center,Kinpo Electronics Inc., New Taipei City, TAIWAN
| | - K Haraikawa
- Healthcare and Beauty RD Center,Kinpo Electronics Inc., New Taipei City, TAIWAN
| | - M F Abbod
- Department of Electronic and Computer Engineering, Brunel University London, Uxbridge, UNITED KINGDOM
| | - J Shieh
- Department of Mechanical Engineering and Innovation Center for Big Data and Digital Convergence, Yuan Ze University, Taoyuan, TAIWAN
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lin Y, Wang P, Lin C, Sadrawi M, Lin C, Hsieh Y, Kuo C, Chien J, Haraikawa K, Abbod MF, Shieh J. 0321 Wearable Device ECG and G-Sensor-based Sleep Stage Evaluation using PSG-based Learning Signal. Sleep 2018. [DOI: 10.1093/sleep/zsy061.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y lin
- Healthcare and Beauty RD Center,Cal-Comp Inc., New Taipei City, TAIWAN
| | - P Wang
- Thoracic Division, Department of Internal Medicine, Far Eastern Memorial Hospital., New Taipei City, TAIWAN
- Oriental Institute of Technology, New Taipei City, TAIWAN
| | - C Lin
- Thoracic Division, Department of Internal Medicine, Far Eastern Memorial Hospital., New Taipei City, TAIWAN
| | - M Sadrawi
- Department of Mechanical Engineering and Innovation Center for Big Data and Digital Convergence, Yuan Ze University, Taoyuan, TAIWAN
| | - C Lin
- Healthcare and Beauty RD Center,Kinpo Electronics Inc., New Taipei City, TAIWAN
| | - Y Hsieh
- Healthcare and Beauty RD Center,Cal-Comp Inc., New Taipei City, TAIWAN
| | - C Kuo
- Healthcare and Beauty RD Center,Cal-Comp Inc., New Taipei City, TAIWAN
| | - J Chien
- Healthcare and Beauty RD Center,Kinpo Electronics Inc., New Taipei City, TAIWAN
| | - K Haraikawa
- Healthcare and Beauty RD Center,Kinpo Electronics Inc., New Taipei City, TAIWAN
| | - M F Abbod
- Department of Electronic and Computer Engineering, Brunel University London, Uxbridge, UNITED KINGDOM
| | - J Shieh
- Department of Mechanical Engineering and Innovation Center for Big Data and Digital Convergence, Yuan Ze University, Taoyuan, TAIWAN
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Chen Y, Hsieh F, Hsieh Y, Jeng J, Lien L, Lin H, Hu C, Peng G, Chern C, Chen C, Tang S, Chi N, Sung Y, Chiou H. Significant association between genetic polymorphisms of gckr and glut1, and ischemic stroke. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chelliah MV, Eagen K, Guo Z, Chackalamannil S, Xia Y, Tsai H, Greenlee WJ, Ahn HS, Kurowski S, Boykow G, Hsieh Y, Chintala M. Himbacine-derived thrombin receptor antagonists: c7-spirocyclic analogues of vorapaxar. ACS Med Chem Lett 2014; 5:561-5. [PMID: 24900880 PMCID: PMC4027741 DOI: 10.1021/ml500008w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/11/2014] [Indexed: 01/24/2023] Open
Abstract
We have synthesized several C7-spirocyclic analogues of vorapaxar and evaluated their in vitro activities against PAR-1 receptor. Some of these analogues showed activities and rat plasma levels comparable to vorapaxar. Compound 5c from this series showed excellent PAR-1 activity (K i = 5.1 nM). We also present a model of these spirocyclic compounds docked to the PAR-1 receptor based on the X-ray crystal structure of vorapaxar bound to PAR-1 receptor. This model explains some of the structure-activity relationships in this series.
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Affiliation(s)
- Mariappan V. Chelliah
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Keith Eagen
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Zhuyan Guo
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | | | | | - Hsingan Tsai
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | | | - Ho-Sam Ahn
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Stan Kurowski
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - George Boykow
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Yunsheng Hsieh
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Madhu Chintala
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
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Chelliah MV, Chackalamannil S, Xia Y, Greenlee WJ, Ahn HS, Kurowski S, Boykow G, Hsieh Y, Chintala M. Himbacine-derived thrombin receptor antagonists: c7-aminomethyl and c9a-hydroxy analogues of vorapaxar. ACS Med Chem Lett 2014; 5:183-7. [PMID: 24900795 DOI: 10.1021/ml400452v] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 12/18/2013] [Indexed: 11/29/2022] Open
Abstract
We have synthesized several C7-aminomethyl analogues of vorapaxar that are potent PAR-1 antagonists. Many of these analogues showed excellent in vitro binding affinity and pharmacokinetics profile in rats. Compound 6a from this series showed excellent PAR-1 activity (K i = 5 nM). We have also synthesized a C9a-hydroxy analogue of vorapaxar, which showed very good PAR-1 affinity (K i = 19.5 nM) along with excellent rat pharmacokinetic profile and ex vivo efficacy in the cynomolgus monkey.
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Affiliation(s)
- Mariappan V. Chelliah
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Samuel Chackalamannil
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Yan Xia
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - William J. Greenlee
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Ho-Sam Ahn
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Stan Kurowski
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - George Boykow
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Yunsheng Hsieh
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
| | - Madhu Chintala
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033-1300, United States
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Hsieh Y, Peterson S, Gauvey-Kern M, Gaydos CA, Holtgrave D, Rothman RE. P5.023 Novel Emergency Department Registration Kiosk For HIV Screening Increases Engagement of High Risk Patients and is Cost-Effective. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.1068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rompalo AM, Hsieh Y, Guy R, Natoli L, Fairley C, Gupta S, Radcliffe K, Hogan MT, Goheen MJ, Gaydos C. P5.083 What Qualities Do Providers Identify as Best For Point of Care STI Tests and Do Opinions Differ by Practise, Region and Country? Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.1127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hsieh Y, Beck K, Kelen G, Shahan J, Kraus C, Laeyendecker O, Quinn T, Rothman R. P5.027 High Prevalence of Undiagnosed HIV Infection in Patients Who Were Not Offered Screening and Patients Who Declined Screening: Evaluation of a Rapid HIV Screening Programme in a U.S. Urban Emergency Department. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.1072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hsueh C, Chang P, Hsieh Y, Chen P, Lin S. Paradoxical Proarrhythmic Effect of Blocking the Small Conductance CalciumActivated Potassium Channel in Isolated Canine Left Atrium. Heart Rhythm 2012. [DOI: 10.1016/j.hrthm.2012.09.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chelliah MV, Chackalamannil S, Xia Y, Eagen K, Greenlee WJ, Ahn HS, Agans-Fantuzzi J, Boykow G, Hsieh Y, Bryant M, Chan TM, Chintala M. Discovery of nor-seco himbacine analogs as thrombin receptor antagonists. Bioorg Med Chem Lett 2012; 22:2544-9. [DOI: 10.1016/j.bmcl.2012.01.138] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 01/31/2012] [Indexed: 12/22/2022]
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Palani A, Rao AU, Chen X, Huang X, Su J, Tang H, Huang Y, Qin J, Xiao D, Degrado S, Sofolarides M, Zhu X, Liu Z, McKittrick B, Zhou W, Aslanian R, Greenlee WJ, Senior M, Cheewatrakoolpong B, Zhang H, Farley C, Cook J, Kurowski S, Li Q, van Heek M, Wang G, Hsieh Y, Li F, Greenfeder S, Chintala M. Discovery of SCH 900271, a Potent Nicotinic Acid Receptor Agonist for the Treatment of Dyslipidemia. ACS Med Chem Lett 2012; 3:63-8. [PMID: 24900372 DOI: 10.1021/ml200243g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Accepted: 11/24/2011] [Indexed: 11/28/2022] Open
Abstract
Structure-guided optimization of a series of C-5 alkyl substituents led to the discovery of a potent nicotinic acid receptor agonist SCH 900271 (33) with an EC50 of 2 nM in the hu-GPR109a assay. Compound 33 demonstrated good oral bioavailability in all species. Compound 33 exhibited dose-dependent inhibition of plasma free fatty acid (FFA) with 50% FFA reduction at 1.0 mg/kg in fasted male beagle dogs. Compound 33 had no overt signs of flushing at doses up to 10 mg/kg with an improved therapeutic window to flushing as compared to nicotinic acid. Compound 33 was evaluated in human clinical trials.
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Affiliation(s)
- Anandan Palani
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Ashwin U. Rao
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Xiao Chen
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Xianhai Huang
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Jing Su
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Haiqun Tang
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Ying Huang
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Jun Qin
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Dong Xiao
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Sylvia Degrado
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Michael Sofolarides
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Xiaohong Zhu
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Zhidan Liu
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Brian McKittrick
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Wei Zhou
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Robert Aslanian
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - William J. Greenlee
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Mary Senior
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Boonlert Cheewatrakoolpong
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Hongtao Zhang
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Constance Farley
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - John Cook
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Stan Kurowski
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Qiu Li
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Margaret van Heek
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Gangfeng Wang
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Yunsheng Hsieh
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Fangbiao Li
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Scott Greenfeder
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Madhu Chintala
- Department of Medicinal Chemistry, ‡Department of Biology, and §Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
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Shah S, Rothman R, Pitts S, Peng J, Hsieh Y. 214 Temporal Trends in Noncontrast Head Computed Tomography Findings in HIV Positive Emergency Department Patients 1998-2009. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chao T, Hsieh Y, Lee C, Tu S, Cheng H, Tung C. SU-E-J-67: Dual Resolution CT-Based Phantoms for Monte Carlo Simulation Against Small-Field Irradiations in Tiny/heterogeneous Tissues. Med Phys 2011. [DOI: 10.1118/1.3611835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Guzi TJ, Paruch K, Dwyer MP, Labroli M, Shanahan F, Davis N, Taricani L, Wiswell D, Seghezzi W, Penaflor E, Bhagwat B, Wang W, Gu D, Hsieh Y, Lee S, Liu M, Parry D. Targeting the replication checkpoint using SCH 900776, a potent and functionally selective CHK1 inhibitor identified via high content screening. Mol Cancer Ther 2011; 10:591-602. [PMID: 21321066 DOI: 10.1158/1535-7163.mct-10-0928] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Checkpoint kinase 1 (CHK1) is an essential serine/threonine kinase that responds to DNA damage and stalled DNA replication. CHK1 is essential for maintenance of replication fork viability during exposure to DNA antimetabolites. In human tumor cell lines, ablation of CHK1 function during antimetabolite exposure led to accumulation of double-strand DNA breaks and cell death. Here, we extend these observations and confirm ablation of CHK2 does not contribute to these phenotypes and may diminish them. Furthermore, concomitant suppression of cyclin-dependent kinase (CDK) activity is sufficient to completely antagonize the desired CHK1 ablation phenotypes. These mechanism-based observations prompted the development of a high-content, cell-based screen for γ-H2AX induction, a surrogate marker for double-strand DNA breaks. This mechanism-based functional approach was used to optimize small molecule inhibitors of CHK1. Specifically, the assay was used to mechanistically define the optimal in-cell profile with compounds exhibiting varying degrees of CHK1, CHK2, and CDK selectivity. Using this approach, SCH 900776 was identified as a highly potent and functionally optimal CHK1 inhibitor with minimal intrinsic antagonistic properties. SCH 900776 exposure phenocopies short interfering RNA-mediated CHK1 ablation and interacts synergistically with DNA antimetabolite agents in vitro and in vivo to selectively induce dsDNA breaks and cell death in tumor cell backgrounds.
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Qin J, Rao A, Chen X, Zhu X, Liu Z, Huang X, Degrado S, Huang Y, Xiao D, Aslanian R, Cheewatrakoolpong B, Zhang H, Greenfeder S, Farley C, Cook J, Kurowski S, Li Q, van Heek M, Chintala M, Wang G, Hsieh Y, Li F, Palani A. Discovery of a potent nicotinic Acid receptor agonist for the treatment of dyslipidemia. ACS Med Chem Lett 2011; 2:171-6. [PMID: 24900295 DOI: 10.1021/ml100251u] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 12/02/2010] [Indexed: 11/28/2022] Open
Abstract
Nicotinic acid has been used clinically for decades to control serum lipoproteins. Nicotinic acid lowers very low-density lipoprotein (VLDL)-cholesterol, low-density lipoprotein (LDL)-cholesterol, and lipoprotein-a (LPa), and it is also effective in raising high-density lipoprotein (HDL)-cholesterol. However, nicotinic acid has several side effects in clinical use. The most notable is intense cutaneous vasodilation "flushing" on the upper body and face. We discovered a pyranopyrimidinedione series to be nicotinic acid receptor agonists. A potent nicotinic acid receptor agonist from this series {5-(3-cyclopropylpropyl)-2-(difluoromethyl)-3H-pyrano[2,3-d]pyrimidine-4,7-dione}with reduced flushing side effect in dogs was identified.
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Affiliation(s)
- Jun Qin
- Department of Medicinal Chemistry
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Ganfeng Wang
- Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Yunsheng Hsieh
- Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Fangbiao Li
- Department of Drug Metabolism & Pharmacokinetics, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
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Hsieh C, Liu C, Hsieh Y, Tai H, Wang L, Tsai T, Chen Y. Role of matrix metalloproteinase-8 in the modulation of systemic 5-fluorouracil pharmacokinetics by local irradiation. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
466 Background: Concurrent chemoradiation with 5-fluorouracil (5-FU) is widely accepted for cancer treatment. However, the interactions between radiation and 5-FU remain unclear. We evaluated the influence of local irradiation on the pharmacokinetics of 5-FU in rats. Methods: The single-fraction radiation was delivered to the whole pelvic fields of Sprague-Dawley rats from a linear accelerator after computerized tomography-based planning. 5-FU at 100 mg/kg was intravenously infused 24 hours after radiation. A high-performance liquid chromatography system equipped with a UV detector was used to measure 5-FU in the blood. Matrix metalloproteinase-8 (MMP-8) inhibitor I was administered to the rats to examine whether or not RT modulation of 5-FU pharmacokinetic parameters could be blocked. Results: Compared with sham-irradiated controls, whole pelvic irradiation reduced the area under the concentration versus time curve (AUC) of 5-FU in plasma and, in contrast, increased the AUC in bile in a radiation dose-dependent manner. Based on protein array analysis, the amount of plasma MMP-8 was increased by whole pelvic irradiation (2.8-fold by 0.5 Gy and 5.3-fold by 2 Gy) in comparison with controls. Pretreatment with MMP-8 inhibitor reversed the effect of irradiation on AUC of 5-FU in plasma. Conclusions: Local irradiation may modulate the systemic pharmacokinetics of 5-FU through stimulating the release of MMP-8. This unexpected influence is worthy of further investigation and for consideration in clinical practice of radiotherapy for cancer. No significant financial relationships to disclose.
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Affiliation(s)
- C. Hsieh
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
| | - C. Liu
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
| | - Y. Hsieh
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
| | - H. Tai
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
| | - L. Wang
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
| | - T. Tsai
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
| | - Y. Chen
- Far Eastern Memorial Hospital, Taipei, Taiwan; Mackay Memorial Hospital, Taipei, Taiwan; National Yang-Ming University, Taipei, Taiwan; National Taiwan University, Taipei, Taiwan
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23
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Xia Y, Chackalamannil S, Greenlee WJ, Wang Y, Hu Z, Root Y, Wong J, Kong J, Ahn HS, Boykow G, Hsieh Y, Kurowski S, Chintala M. Discovery of a vorapaxar analog with increased aqueous solubility. Bioorg Med Chem Lett 2010; 20:6676-9. [DOI: 10.1016/j.bmcl.2010.09.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Accepted: 09/01/2010] [Indexed: 11/29/2022]
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24
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Hsieh Y. Hydrophilic interaction liquid chromatography-tandem mass spectrometry for drug development. Curr Drug Discov Technol 2010; 7:223-231. [PMID: 20843291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 07/21/2010] [Indexed: 05/29/2023]
Abstract
Hydrophilic interaction chromatography (HILIC) offers a difference in selectivity as compared to traditional normal phase and reversed-phase liquid chromatography and therefore has great potential for the separation of a variety of pharmaceuticals. This review is devoted to summarizing HILIC coupled to tandem mass spectrometric (MS/MS) methods for the rapid, sensitive and accurate determinations of small molecules employed for supporting drug discovery. The perspectives and challenges on performing HILIC-MS/MS assays are also presented.
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Affiliation(s)
- Yunsheng Hsieh
- Department of Drug Metabolism and Pharmacokinetics, Merck Research Laboratories, Kenilworth, NJ 07033, USA.
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25
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Hsieh Y. Emerging technologies for the study of drug metabolism and pharmacokinetics. Curr Drug Discov Technol 2010; 7:141-142. [PMID: 20843297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 07/20/2010] [Indexed: 05/29/2023]
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Abstract
Matrix-assisted laser desorption/ionization-tandem mass spectrometric method (MALDI-MS/MS) has proven to be a reliable tool for direct measurement of the disposition of small molecules in animal tissue sections. As example, MALDI-MS/MS imaging system was employed for visualizing the spatial distribution of astemizole and its primary metabolite in rat brain tissues. Astemizole is a second-generation antihistamine, a block peripheral H1 receptor, which was introduced to provide comparable therapeutic benefit but was withdrawn in most countries due to toxicity risks. Astemizole was observed to be heterogeneously distributed to most parts of brain tissue slices including cortex, hippocampus, hypothalamic, thalamus, and ventricle regions while its major metabolite, desmethylastemizole, was only found around ventricle sites. We have shown that astemizole alone is likely to be responsible for the central nervous system (CNS) side effects when its exposures became elevated.
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Affiliation(s)
- Yunsheng Hsieh
- Department of Drug Metabolism and Pharmacokinetics, Merck Research Laboratories, Kenilworth, NJ, USA
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27
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Liu G, Taylor SA, Marrinan CH, Hsieh Y, Bishop WR, Kirschmeier P, Long BJ. Continuous and intermittent dosing of lonafarnib potentiates the therapeutic efficacy of docetaxel on preclinical human prostate cancer models. Int J Cancer 2009; 125:2711-20. [PMID: 19530253 DOI: 10.1002/ijc.24644] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lonafarnib is a potent, selective farnesyltransferase inhibitor (FTI) undergoing clinical studies for the treatment of solid tumors and hematological malignancies. Preclinically, a number of FTIs, including lonafarnib, interact with taxanes to inhibit cancer cell growth in an additive/synergistic manner. These observations provided rationale for investigating the effects of combining lonafarnib and docetaxel on preclinical prostate cancer models. To date, docetaxel is the only chemotherapeutic agent in clinical use for hormone-refractory prostate cancer. In vitro experiments with 22Rv1, LNCaP, DU-145, PC3 and PC3-M prostate cancer cell lines showed significantly enhanced inhibition of cell proliferation and apoptosis when lonafarnib was added to docetaxel. In human tumor xenograft models, continuous coadministration of lonafarnib with docetaxel caused marked tumor regressions (24-47%) in tumors from all of the cell types as well as parental CWR22 xenografts. Intermittent dosing of lonafarnib (5 days on then 5 days off) coadministered with docetaxel produced similar regressions in hormone-refractory 22Rv1 tumors. 22Rv1 tumors progressing on docetaxel treatment also responded to treatment with intermittent lonafarnib (5 days on then 5 days off). Moreover, animals did not exhibit any signs of toxicity during coadministration of lonafarnib and docetaxel. In conclusion, coadministration of continuous and intermittent lonafarnib enhanced the antitumor activity of docetaxel in a panel of prostate cancer models. An intermittent dosing schedule of lonafarnib coadministered with docetaxel may allow enhanced efficacy to that of continuous dosing by improving the tolerability of higher doses of lonafarnib.
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Affiliation(s)
- Gongjie Liu
- Schering-Plough Research Institute, Biological Research - Oncology, Kenilworth, NJ 07033, USA
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28
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Morton M, Kirsch T, Rothman R, Hsieh Y, Byerly M, McManus J, Kelen G. 391: The Impact of Emergency Department Size on Pandemic Influenza Preparedness in U.S. Emergency Departments. Ann Emerg Med 2009. [DOI: 10.1016/j.annemergmed.2009.06.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Hsieh Y, Korfmacher W. The Role of Hyphenated Chromatography-Mass Spectrometry Techniques in Exploratory Drug Metabolism and Pharmacokinetics. Curr Pharm Des 2009; 15:2251-61. [DOI: 10.2174/138161209788682505] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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30
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Hsieh Y, Cheng KC, Wang Y, Chackalamannil S, Xia Y, Korfmacher W, White R. The Role of Exploratory Drug Metabolism and Pharmacokinetics in New Drug Research: Case Study-Selection of a Thrombin Receptor Antagonist for Development. Curr Pharm Des 2009; 15:2262-9. [DOI: 10.2174/138161209788682497] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Hsieh Y. Editorial [Hot Topic: Perspectives of Pharmacokinetics and Metabolism in Drug Design (Executive Editor: Yunsheng Hsieh)]. Curr Pharm Des 2009; 15:2169. [DOI: 10.2174/138161209788682488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Cheng KC, Li C, Liu T, Wang G, Hsieh Y, Pavlosky A, Broske L, Prelusky D, Liu R, White R, Uss A, Gupta S, Njoroge F. Use of Pre-Clinical In Vitro and In Vivo Pharmacokinetics for the Selection of a Potent Hepatitis C Virus Protease Inhibitor, Boceprevir, for Clinical Development. LETT DRUG DES DISCOV 2009. [DOI: 10.2174/157018009788452474] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Hsieh Y, Galviz G, Long BJ. Ultra-performance hydrophilic interaction liquid chromatography/tandem mass spectrometry for the determination of everolimus in mouse plasma. Rapid Commun Mass Spectrom 2009; 23:1461-1466. [PMID: 19350527 DOI: 10.1002/rcm.4022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Ultra-performance hydrophilic interaction liquid chromatography (UPHILIC) interfaced with the electrospray ionization (ESI) source of a tandem mass spectrometer (MS/MS) was developed for the simultaneous determination of everolimus in mouse plasma samples. UPHILIC was performed on a sub-2 microm bare silica particle packing with the column pressure under traditional high-performance liquid chromatography (HPLC) to allow fast separation of pharmaceutical compounds within a chromatographic analysis time of 1 min. This UPHILIC technology is comparable with reversed-phase ultra-performance liquid chromatography (RPUPLC) in terms of chromatographic efficiency but demands neither expensive ultra-high-pressure instrumentation nor new laboratory protocols. With the ESI source, multiple reaction monitoring (MRM) of the ammoniated adduct ions of the analyte was used for tandem mass spectrometric detection. The retention mechanism profiles of the test compounds under HILIC conditions were explored. The influences of experimental factors such as the compositions of mobile phases on the chromatographic performance and the ionization efficiency of the test compounds in positive ion mode were investigated. A UPHILIC/MS/MS approach following a protein precipitation procedure was applied for the quantitative determination of everolimus at the low ng/mL region in support of a pharmacodynamic study. The analytical results obtained by the UPHILIC/MS/MS approach were fond to be in good agreement with those obtained by the RPUPLC/MS/MS method in terms of assay sample throughput, sensitivity and accuracy.
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Affiliation(s)
- Yunsheng Hsieh
- Drug Metabolism and Pharmacokinetics Department, Schering-Plough Research Institute, Kenilworth, NJ 07033, USA.
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34
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Hsieh Y, Galviz G, Zhou Q, Duncan C. Hydrophilic interaction liquid chromatography/tandem mass spectrometry for the simultaneous determination of dasatinib, imatinib and nilotinib in mouse plasma. Rapid Commun Mass Spectrom 2009; 23:1364-1370. [PMID: 19337981 DOI: 10.1002/rcm.4010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Hydrophilic interaction liquid chromatography (HILIC) interfaced with atmospheric pressure ionization (API) sources and a tandem mass spectrometer (MS/MS) was developed for the simultaneous determination of dasatinib, imatinib and nilotinib in mouse plasma samples. The retention profiles of all analytes on several silica stationary phases under HILIC conditions were explored. The influences of experimental factors such as the compositions of mobile phases on the chromatographic performance and the ionization efficiency of all analytes in positive ion mode were investigated. The applicability of the proposed HILIC/MS/MS approach following a protein precipitation procedure for the quantitative determination of dasatinib, imatinib and nilotinib at low nano-mole levels was examined with respect to assay specificity and linearity. The analytical results obtained by various HILIC/MS/MS approaches were found to be in good agreement with those obtained by reversed-phase liquid chromatography/tandem mass spectrometry (RPLC/MS/MS) methods in terms of assay sample throughputs, sensitivity and accuracy. Furthermore, the potential of matrix ionization suppression on the proposed HILIC/MS/MS systems was investigated using the post-column infusion technique.
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Affiliation(s)
- Yunsheng Hsieh
- Drug Metabolism and Pharmacokinetics Department, Schering-Plough Research Institute, Kenilworth, NJ 07033, USA.
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35
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Kraus C, Shahan J, Hsieh Y, Rothman R, Oliver A, Gamiel J, Laeyendecker O, Quinn T, Kelen G. 41: Seroprevalence of HSV-2 Infection Among an Urban Emergency Department Patient Population. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Kraus C, Shahan J, Rothman R, Hsieh Y, Laeyendecker O, Oliver A, Gamiel J, Quinn T, Kelen G. 2: Twenty Years Experience With HIV Testing among Emergency Department Patients at the Johns Hopkins Hospital. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Li F, Hsieh Y, Korfmacher WA. High-performance liquid chromatography-atmospheric pressure photoionization/tandem mass spectrometry for the detection of 17alpha-ethinylestradiol in hepatocytes. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 870:186-91. [DOI: 10.1016/j.jchromb.2008.05.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 05/26/2008] [Accepted: 05/30/2008] [Indexed: 11/15/2022]
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38
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Chackalamannil S, Wang Y, Greenlee WJ, Hu Z, Xia Y, Ahn HS, Boykow G, Hsieh Y, Palamanda J, Agans-Fantuzzi J, Kurowski S, Graziano M, Chintala M. Discovery of a Novel, Orally Active Himbacine-Based Thrombin Receptor Antagonist (SCH 530348) with Potent Antiplatelet Activity. J Med Chem 2008; 51:3061-4. [DOI: 10.1021/jm800180e] [Citation(s) in RCA: 211] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Samuel Chackalamannil
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Yuguang Wang
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - William J. Greenlee
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Zhiyong Hu
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Yan Xia
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Ho-Sam Ahn
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - George Boykow
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Yunsheng Hsieh
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Jairam Palamanda
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | | | - Stan Kurowski
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Michael Graziano
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Madhu Chintala
- Schering-Plough Research Institute, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
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39
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40
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41
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Hsieh J, Hsieh Y. Eine neue Variante der einzeitigen Hypospadiekorrektur. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1061470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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42
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Abstract
The aim of this article is to focus on the implementation and the application of matrix-assisted laser desorption/ionization-imaging mass spectrometric system (MALDI-IMS) to determine the disposition or biotransformation pathway of terfenadine and its active metabolite, fexofenadine in mouse and rat whole-body tissue sections. Whole-body MALDI-IMS data showed that the poor oral bioavailability of terfenadine was largely due to high first-pass metabolism in the intestines and the liver before the compound reached systemic circulation.
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Affiliation(s)
- Jiwen Chen
- Schering-Plough Research Institute, 2015 Galloping Hill Road, K15-3700, Kenilworth, NJ 07033, USA
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43
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44
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Chelliah MV, Chackalamannil S, Xia Y, Eagen K, Clasby MC, Gao X, Greenlee W, Ahn HS, Agans-Fantuzzi J, Boykow G, Hsieh Y, Bryant M, Palamanda J, Chan TM, Hesk D, Chintala M. Heterotricyclic himbacine analogs as potent, orally active thrombin receptor (protease activated receptor-1) antagonists. J Med Chem 2007; 50:5147-60. [PMID: 17854166 DOI: 10.1021/jm070704k] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pursuing our earlier efforts in the himbacine-based thrombin receptor antagonist area, we have synthesized a series of compounds that incorporate heteroatoms in the C-ring of the tricyclic motif. This effort has resulted in the identification of several potent heterocyclic analogs with excellent affinity for the thrombin receptor. Several of these compounds demonstrated robust inhibition of platelet aggregation in an ex vivo model in cynomolgus monkeys following oral administration. A detailed profile of 28b, a benchmark compound in this series, with a Ki of 4.3 nM, is presented.
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Affiliation(s)
- Mariappan V Chelliah
- Central Nervous System and Cardiovascular Chemical Research, Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, USA.
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45
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Lovett P, Newman-Toker D, Stanton V, Hsieh Y, Camargo C, Edlow J, Goldstein J, Abbuhl S, Lin M, Chanmugam A, Rothman R. 33: Diagnosing Dizziness in the Emergency Department: Physicians May Rely Too Heavily on Symptom Quality. Results of a Multicenter, Quantitative Survey. Ann Emerg Med 2007. [DOI: 10.1016/j.annemergmed.2007.06.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Hsieh Y, Duncan CJG, Brisson JM. Fused-Core Silica Column High-Performance Liquid Chromatography/Tandem Mass Spectrometric Determination of Rimonabant in Mouse Plasma. Anal Chem 2007; 79:5668-73. [PMID: 17605466 DOI: 10.1021/ac070343g] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A high-performance liquid chromatography (HPLC) method using a fused-core silica particle packing was evaluated to allow fast and efficient separation for the analysis of pharmaceutical compounds. Fused-core particles are produced by "fusing" a porous silica layer onto a solid silica particle. The efficiencies of columns packed with 2.7 microm "fused-core" particles (a 0.5 microm porous shell fused to a solid 1.7 microm silica core particle) and 1.7 microm porous particles were compared in reversed-phase HPLC using rimonabant as an analyte. The fused-core silica materials providing the shorter diffusional mass transfer path for solutes are less affected in resolving power by increases in mobile-phase velocity than the sub-2 microm porous silica packings resulting in faster separations and higher sample throughput. This fast HPLC technology is comparable with ultrahigh-pressure liquid chromatography (UHPLC) in terms of chromatographic performance but demands neither expensive ultra-high-pressure instrumentation nor new laboratory protocols. The column effluent was directly connected to the atmospheric pressure chemical ionization (APCI) source prior to tandem mass spectrometric detection. In this work, the described fast HPLC-MS/MS and UHPLC-MS/MS approaches requiring approximately 1.5 min per sample were applied and compared for the determination of the rimonabant in mouse plasma samples at the low nanograms per milliliter region in support of a pharmacodynamic study.
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Affiliation(s)
- Yunsheng Hsieh
- Drug Metabolism and Pharmacokinetics Department, Schering-Plough Research Institute, Kenilworth, New Jersey 07033, USA.
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47
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Xia Y, Chackalamannil S, Clasby M, Doller D, Eagen K, Greenlee WJ, Tsai H, Agans-Fantuzzi J, Ahn HS, Boykow GC, Hsieh Y, Lunn CA, Chintala M. Himbacine derived thrombin receptor (PAR-1) antagonists: SAR of the pyridine ring. Bioorg Med Chem Lett 2007; 17:4509-13. [PMID: 17574850 DOI: 10.1016/j.bmcl.2007.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Accepted: 06/01/2007] [Indexed: 10/23/2022]
Abstract
The structure-activity relationship (SAR) of the vinyl pyridine region of himbacine derived thrombin receptor (PAR-1) antagonists is described. A 2-vinylpyridyl ring substituted with an aryl or a heteroaryl group at the 5-position showed the best overall PAR-1 affinity and pharmacokinetic properties. One of the newly discovered analogs bearing a 5-(3-pyridyl) substituent showed excellent PAR-1 affinity (Ki = 22 nM) and oral activity with reduced ClogP and improved off-target selectivity compared to an earlier development candidate.
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Affiliation(s)
- Yan Xia
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA.
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Hsieh Y, Duncan CJG, Liu M. A mixed-mode liquid chromatography-tandem mass spectrometric method for the determination of cytarabine in mouse plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 854:8-12. [PMID: 17448737 DOI: 10.1016/j.jchromb.2007.03.034] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Revised: 03/20/2007] [Accepted: 03/25/2007] [Indexed: 11/17/2022]
Abstract
A novel mixed-mode high performance liquid chromatographic system (HPLC) interfaced with an atmospheric pressure chemical ionization (APCI) source and a tandem mass spectrometer (MS/MS) was developed for the determination of cytarabine (ara-C) in mouse plasma to support pharmacodynamic studies. The mixed-mode reversed-phase ion-exchange chromatography column was adapted for sufficient retention and separation of a small and polar analyte. The impact of the mobile phase composition on both chromatographic separation and the ionization efficiency of the test compound in the positive mode was investigated. The potential of ionization suppression from endogenous biological matrices on the mixed-mode LC-APCI/MS/MS method was evaluated using the post-column infusion technique. Furthermore, the feasibility of using the mixed-mode HPLC-MS/MS method for the determination of the plasma concentrations of cytarabine in mice was demonstrated by comparing those obtained by the ion-pairing HPLC-MS/MS method.
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Affiliation(s)
- Yunsheng Hsieh
- Drug Metabolism and Pharmacokinetics Department, Schering-Plough Research Institute, Kenilworth, NJ 07033, USA.
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Wang G, Hsieh Y, Cheng KC, Morrison RA, Venkatraman S, Njoroge FG, Heimark L, Korfmacher WA. Ultra-performance liquid chromatography/tandem mass spectrometric determination of diastereomers of SCH 503034 in monkey plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 852:92-100. [PMID: 17240204 DOI: 10.1016/j.jchromb.2006.12.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2006] [Revised: 12/20/2006] [Accepted: 12/31/2006] [Indexed: 11/29/2022]
Abstract
This paper describes the development and qualification of a fast, sensitive and specific ultra-performance liquid chromatography/tandem mass spectrometric (UPLC/MS/MS) method for the determination of diastereomers of SCH 503034 in monkey plasma. The analytical method involves direct protein precipitation with a mixture of methanol/acetonitrile (10/90) containing an internal standard, followed by separation of the stereoisomers on an Acquity UPLC C(18) column and detected by selected reaction monitoring (SRM) in positive ionization mode using atmospheric pressure chemical ionization (APCI). The effects of ion-pairing agents on separation and ionization efficiency were investigated. The two diastereomers were well separated (R=1.3) with a runtime of 5 min under an isocratic condition. The method was qualified. The linear concentration range was 1-2500 ng/ml for the both stereoisomers. Inter-assay mean bias and relative standard deviation (R.S.D.) were in the range of -1.2% to 3.6% and 2.8-10%, respectively. Intra-assay mean bias and R.S.D. were in the range of -1.3% to 5.5% and 2.3-7.8%, respectively. Recoveries of the stereoisomers at concentration levels of 2.5, 50 and 1000 ng/ml were 87.2-90.0%, 89.1-90.4% and 92.3-94.3%, respectively. The LLOQ for this assay was 1 ng/ml. No matrix interferences were observed in six different sources of blank monkey plasma.
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Affiliation(s)
- Ganfeng Wang
- Department of Drug Metabolism and Pharmacokinetics, Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA.
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Hsieh Y, Li F, Duncan CJG. Supercritical Fluid Chromatography and High-Performance Liquid Chromatography/Tandem Mass Spectrometric Methods for the Determination of Cytarabine in Mouse Plasma. Anal Chem 2007; 79:3856-61. [PMID: 17441687 DOI: 10.1021/ac062441s] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The separation of cytarabine (ara-C) from the endogenous compounds in mouse plasma by packed-column supercritical fluid chromatography (pSFC) was achieved on bare silica stationary phase with an isocratic mobile phase composed of CO2/methanol solvent with addition of ammonium acetate. SFC is commonly assumed to be only applicable to nonpolar and relatively low-polarity compounds. In this work, a broader range of compound polarities amenable to pSFC with appropriate mobile-phase modifiers and additives under normal-phase retention mechanism was demonstrated. The pSFC was integrated with an atmospheric pressure chemical ionization source and a tandem mass spectrometer (MS/MS) to enhance the sensitivity, selectivity, and speed of the assay. The influence of mobile-phase components on chromatographic performance and ionization efficiency of the test compounds was investigated for improving the sensitivity and separation for the analyte and the internal standard. The pSFC-MS/MS approach requiring approximately 2.5 min/sample for the determination of ara-C at nanograms per milliliter in mouse plasma was partially validated with respect to stability, linearity, and reproducibility. The mouse plasma levels of ara-C obtained by the pSFC-MS/MS method were found to be consistent with those determined by various reversed-phase, high-performance liquid chromatography methods using a porous graphite carbon column, a mixed-mode column, or a C18 column in conjunction with an ion-pairing agent coupled to a tandem mass spectrometer.
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Affiliation(s)
- Yunsheng Hsieh
- Drug Metabolism and Pharmacokinetics Department, Schering-Plough Research Institute, Kenilworth, New Jersey 07033, USA.
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