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Cho CK, Ko E, Mo JY, Kang P, Jang CG, Lee SY, Lee YJ, Bae JW, Choi CI. PBPK modeling to predict the pharmacokinetics of pantoprazole in different CYP2C19 genotypes. Arch Pharm Res 2024; 47:82-94. [PMID: 38150171 DOI: 10.1007/s12272-023-01478-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 12/18/2023] [Indexed: 12/28/2023]
Abstract
Pantoprazole is used to treat gastroesophageal reflux disease (GERD), maintain healing of erosive esophagitis (EE), and control symptoms related to Zollinger-Ellison syndrome (ZES). Pantoprazole is mainly metabolized by cytochrome P450 (CYP) 2C19, converting to 4'-demethyl pantoprazole. CYP2C19 is a genetically polymorphic enzyme, and the genetic polymorphism affects the pharmacokinetics and/or pharmacodynamics of pantoprazole. In this study, we aimed to establish the physiologically based pharmacokinetic (PBPK) model to predict the pharmacokinetics of pantoprazole in populations with various CYP2C19 metabolic activities. A comprehensive investigation of previous reports and drug databases was conducted to collect the clinical pharmacogenomic data, physicochemical data, and disposition properties of pantoprazole, and the collected data were used for model establishment. The model was evaluated by comparing the predicted plasma concentration-time profiles and/or pharmacokinetic parameters (AUC and Cmax) with the clinical observation results. The predicted plasma concentration-time profiles in different CYP2C19 phenotypes properly captured the observed profiles. All fold error values for AUC and Cmax were included in the two-fold range. Consequently, the minimal PBPK model for pantoprazole related to CYP2C19 genetic polymorphism was properly established and it can predict the pharmacokinetics of pantoprazole in different CYP2C19 phenotypes. The present model can broaden the insight into the individualized pharmacotherapy for pantoprazole.
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Affiliation(s)
- Chang-Keun Cho
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Eunvin Ko
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Ju Yeon Mo
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Pureum Kang
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Choon-Gon Jang
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Seok-Yong Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Yun Jeong Lee
- College of Pharmacy, Dankook University, Cheonan, 31116, Republic of Korea
| | - Jung-Woo Bae
- College of Pharmacy, Keimyung University, Daegu, 42601, Republic of Korea
| | - Chang-Ik Choi
- College of Pharmacy, Dongguk University-Seoul, Goyang, 10326, Republic of Korea.
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Jeong SH, Jang JH, Lee YB. Exploring Differences in Pharmacometrics of Rabeprazole between Genders via Population Pharmacokinetic-Pharmacodynamic Modeling. Biomedicines 2023; 11:3021. [PMID: 38002021 PMCID: PMC10669052 DOI: 10.3390/biomedicines11113021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Rabeprazole is a proton pump inhibitor that inhibits gastric acid production and increases gastric pH; it is widely used clinically as a treatment option for gastritis and gastric ulcers. However, information on the inter-individual variability of rabeprazole pharmacometrics, which is a key element in establishing its scientific clinical use, is still lacking. Particularly, the differences in pharmacokinetics between genders and the degree of variation in pharmacodynamics have not been clearly identified. Thus, the main purpose of this study was to explore any differences in rabeprazole pharmacokinetics between genders and to quantitatively predict and compare the effects of any differences in pharmacokinetics between genders on known pharmacodynamics using population pharmacokinetic-pharmacodynamic modeling. To compare pharmacokinetics and modeling data between genders, bioequivalence results were used simultaneously on healthy Korean men and women using the physiological and biochemical parameters derived from each individual. Pharmacodynamic modeling was performed based on the data of previously reported gastric pH changes in response to rabeprazole plasma concentrations, which was co-linked to the central compartmental bioavailable concentration in the population pharmacokinetic model. There was no significant difference in the level of rabeprazole exposure and elimination of plasma between genders following oral administration of 10 mg enteric-coated rabeprazole tablets; however, there was a clear delay in absorption in women compared to men. Additionally, a comparison of pharmacokinetic parameters normalized to body weight between genders showed that the maximum plasma concentrations were significantly higher in women than in men, again suggesting gender differences in rabeprazole absorption. The population pharmacokinetic profiles for rabeprazole were described using a three-sequential multi-absorption with lag time (Tlag) two-compartment model, whereas body surface area and gender were explored as effective covariates for absorption rate constant and Tlag, respectively. The effect of increased gastric pH due to plasma exposure to rabeprazole was explained using the Sigmoid Emax model, with the baseline as a direct response. The significantly longer rabeprazole Tlag in females delayed the onset of an effect by an average of 1.58 times (2.02-3.20 h), yet the overall and maximum effects did not cause a significant difference within 15%. In the relative comparison of the overall efficacy of rabeprazole enteric-coated tablet administration between genders, it was predicted based on the model that males would have higher efficacy. This study will be very useful in broadening the perspective of interpreting drug diversity between individuals and narrowing the gap in knowledge related to scientific precision medicine by presenting new information on gender differences in rabeprazole pharmacometrics that had not been previously identified.
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Affiliation(s)
- Seung-Hyun Jeong
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Suncheon-si 57922, Republic of Korea; (S.-H.J.); (J.-H.J.)
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon-si 57922, Republic of Korea
| | - Ji-Hun Jang
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Suncheon-si 57922, Republic of Korea; (S.-H.J.); (J.-H.J.)
| | - Yong-Bok Lee
- College of Pharmacy, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
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3
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Zubiaur P, Soria-Chacartegui P, Boone EC, Prasad B, Dinh J, Wang WY, Zugbi S, Rodríguez-Lopez A, González-Iglesias E, Leeder JS, Abad-Santos F, Gaedigk A. Impact of CYP2C:TG Haplotype on CYP2C19 Substrates Clearance In Vivo, Protein Content, and In Vitro Activity. Clin Pharmacol Ther 2023; 114:1033-1042. [PMID: 37528442 PMCID: PMC10592245 DOI: 10.1002/cpt.3012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 07/26/2023] [Indexed: 08/03/2023]
Abstract
A novel haplotype composed of two non-coding variants, CYP2C18 NM_000772.3:c.*31T (rs2860840) and NM_000772.2:c.819+2182G (rs11188059), referred to as "CYP2C:TG," was recently associated with ultrarapid metabolism of various CYP2C19 substrates. As the underlying mechanism and clinical relevance of this effect remain uncertain, we analyzed existing in vivo and in vitro data to determine the magnitude of the CYP2C:TG haplotype effect. We assessed variability in pharmacokinetics of CYP2C19 substrates, including citalopram, sertraline, voriconazole, omeprazole, pantoprazole, and rabeprazole in 222 healthy volunteers receiving one of these six drugs. We also determined its impact on CYP2C8, CYP2C9, CYP2C18, and CYP2C19 protein abundance in 135 human liver tissue samples, and on CYP2C18/CYP2C19 activity in vitro using N-desmethyl atomoxetine formation. No effects were observed according to CYP2C:TG haplotype or to CYP2C19*1+TG alleles (i.e., CYP2C19 alleles containing the CYP2C:TG haplotype). In contrast, CYP2C19 intermediate (e.g., CYP2C19*1/*2) and poor metabolizers (e.g., CYP2C19*2/*2) showed significantly higher exposure in vivo, lower CYP2C19 protein abundance in human liver microsomes, and lower activity in vitro compared with normal, rapid (i.e., CYP2C19*1/*17), and ultrarapid metabolizers (i.e., CYP2C19*17/*17). Moreover, a tendency toward lower exposure was observed in ultrarapid metabolizers compared with rapid metabolizers and normal metabolizers. Furthermore, when the CYP2C19*17 allele was present, CYP2C18 protein abundance was increased suggesting that genetic variation in CYP2C19 may be relevant to the overall metabolism of certain drugs by regulating not only its expression levels, but also those of CYP2C18. Considering all available data, we conclude that there is insufficient evidence supporting clinical CYP2C:TG testing to inform drug therapy.
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Affiliation(s)
- Pablo Zubiaur
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), 28006 Madrid, Spain
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children’s Mercy Research Institute (CMRI), Kansas City, MO, United States
| | - Paula Soria-Chacartegui
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), 28006 Madrid, Spain
| | - Erin C Boone
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children’s Mercy Research Institute (CMRI), Kansas City, MO, United States
| | - Bhagwat Prasad
- Department of Pharmaceutical Sciences, Washington State University, Spokane, WA, United States
| | - Jean Dinh
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children’s Mercy Research Institute (CMRI), Kansas City, MO, United States
| | - Wendy Y Wang
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children’s Mercy Research Institute (CMRI), Kansas City, MO, United States
| | - Santiago Zugbi
- Unit of Innovative Treatments, Hospital de Pediatría JP Garrahan, Buenos Aires, Argentina
| | - Andrea Rodríguez-Lopez
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), 28006 Madrid, Spain
| | - Eva González-Iglesias
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), 28006 Madrid, Spain
| | - J. Steven Leeder
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children’s Mercy Research Institute (CMRI), Kansas City, MO, United States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO, United States
| | - Francisco Abad-Santos
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), 28006 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - Andrea Gaedigk
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children’s Mercy Research Institute (CMRI), Kansas City, MO, United States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO, United States
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4
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Liao Y, Chen Y, Hsiao T, Lin C, Wu M, Hsu C, Chen Y, Hsu C. CYP2C19 genotypes and osteoporotic fractures in long-term users of proton pump inhibitors: A hospital-based study. Clin Transl Sci 2023; 16:2198-2208. [PMID: 37641483 PMCID: PMC10651637 DOI: 10.1111/cts.13620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/25/2023] [Accepted: 08/11/2023] [Indexed: 08/31/2023] Open
Abstract
Proton pump inhibitors (PPIs) are commonly prescribed medications. The existing data suggest that individuals at a high risk of fractures have been exposed to high doses of PPIs for prolonged durations. CYP2C19 plays a pivotal role in metabolism of PPIs and thereby influences their pharmacokinetic profile. Hence, we hypothesize that CYP2C19 genotypes may be associated with fragility fracture among PPIs users due to PPI exposure. This study aimed to investigate the association between CYP2C19 genotypes, bone mineral density (BMD), and osteoporotic fracture in a hospital-based population. This retrospective cohort study enrolled patients who were prescribed long-term PPIs at Taichung Veterans General Hospital using data extracted from the Taiwan Precision Medicine Initiative between January 2010 and April 2021. Associations between CYP2C19 phenotypes, comorbidities, and fractures in PPI users were analyzed. We enrolled 1518 long-term PPI users; 571 (38%), 727 (48%), and 220 (14%) CYP2C19 normal metabolizers (NMs), intermediate metabolizers (IMs), and poor metabolizers (PMs), respectively. Among them, 49 (3.2%) patients developed fractures within the 1-year follow-up period; 20 (3.5%) fractures in NMs, 24 (3.3%) in IMs, and 5 (2.3%) in PMs, respectively. No significant difference was observed among CYP2C19 genotypes and fracture. Additionally, BMD measurements during the 1-year follow-up period were made available among 75 participants. No significant difference in BMD between CYP2C19 PMs and non-PMs was found. This real-world, hospital-based study concludes that CYP2C19 PMs/IMs are not associated with an increased risk for fractures or reduced BMD in individuals on long-term PPI therapy.
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Affiliation(s)
- Yi‐Ju Liao
- Department of PharmacyTaichung Veterans General HospitalTaichungTaiwan
- Department of PharmacyNational Yang Ming Chiao Tung UniversityTaipeiTaiwan
| | - Yu‐Ting Chen
- Department of PharmacyTaichung Veterans General HospitalTaichungTaiwan
| | - Tzu‐Hung Hsiao
- Department of Medical ResearchTaichung Veterans General HospitalTaichungTaiwan
- Department of Public HealthFu Jen Catholic UniversityNew TaipeiTaiwan
- Institute of Public Health and Community Medicine Research CenterNational Yang Ming Chiao Tung UniversityTaipeiTaiwan
| | - Ching‐Heng Lin
- Department of Medical ResearchTaichung Veterans General HospitalTaichungTaiwan
- Department of Public HealthFu Jen Catholic UniversityNew TaipeiTaiwan
- Institute of Public Health and Community Medicine Research CenterNational Yang Ming Chiao Tung UniversityTaipeiTaiwan
- Department of Industrial Engineering and Enterprise InformationTunghai UniversityTaichungTaiwan
| | - Ming‐Fen Wu
- Department of PharmacyTaichung Veterans General HospitalTaichungTaiwan
| | - Chiann‐Yi Hsu
- Department of Medical ResearchTaichung Veterans General HospitalTaichungTaiwan
- Biostatistics Task Force of Taichung Veterans General HospitalTaichungTaiwan
| | - Yi‐Ming Chen
- Department of Medical ResearchTaichung Veterans General HospitalTaichungTaiwan
- Division of Allergy, Immunology and Rheumatology, Department of Internal MedicineTaichung Veterans General HospitalTaichungTaiwan
- Department of Post‐Baccalaureate Medicine, College of MedicineNational Chung Hsing UniversityTaichungTaiwan
- School of MedicineNational Yang‐Ming Chiao Tung UniversityTaipeiTaiwan
- Rong Hsing Research Center for Translational Medicine & Ph.D. Program in Translational MedicineNational Chung Hsing UniversityTaichungTaiwan
- Precision Medicine Research Center, College of MedicineNational Chung Hsing UniversityTaichungTaiwan
| | - Chun‐Sheng Hsu
- Department of Post‐Baccalaureate Medicine, College of MedicineNational Chung Hsing UniversityTaichungTaiwan
- Department of Physical Medicine and RehabilitationTaichung Veterans General HospitalTaichungTaiwan
- School of MedicineNational Defense Medical CenterTaipeiTaiwan
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5
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Performance Verification of CYP2C19 Enzyme Abundance Polymorphism Settings within the Simcyp Simulator v21. Metabolites 2022; 12:metabo12101001. [PMID: 36295903 PMCID: PMC9607610 DOI: 10.3390/metabo12101001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/17/2022] Open
Abstract
Physiologically based pharmacokinetic (PBPK) modeling has a number of applications, including assessing drug−drug interactions (DDIs) in polymorphic populations, and should be iteratively refined as science progresses. The Simcyp Simulator is annually updated and version 21 included updates to hepatic and intestinal CYP2C19 enzyme abundance, including addition of intermediate and rapid metabolizer phenotypes and changes to the ultra-rapid metabolizer enzyme abundance, with implications for population clearance and DDI predictions. This work details verification of the updates with sensitive CYP2C19 substrates, omeprazole and lansoprazole, using available clinical data from literature. Multiple assessments were performed, including recovery of areas under the concentration-time curve (AUC) and Cmax from compiled datasets for each drug, recovery of victim DDI ratios with CYP2C19 and/or CYP3A4 inhibition and recovery of relative exposure between phenotypes. Simulated data were within respective acceptance criteria for >80% of omeprazole AUC values, >70% of lansoprazole AUC and Cmax, >60% of AUC and Cmax DDI ratios and >80% of exposure ratios between different phenotypes. Recovery of omeprazole Cmax was lower (>50−70% within 2-fold) and possibly attributed to the variety of formulations used in the clinical dataset. Overall, the results demonstrated that the updated data used to parameterize CYP2C19 phenotypes reasonably described the pharmacokinetics of omeprazole and lansoprazole in genotyped or phenotyped individuals.
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Zhou S, Xie R, Zhang X, He X, Huang J, Yin J, Liao M, Ding Y, Yang D, Liu Y, Zhang Q, Yang G, Liu F, Guan S, He Q, Lou H, Gong F, Meng X, Xiang Q, Zhao X, Cui Y. Evaluation of the relationship between polymorphisms in CYP2C19 and the single-dose pharmacokinetics of omeprazole in healthy Chinese volunteers: A multicenter study. Clin Transl Sci 2022; 15:1439-1448. [PMID: 35235711 PMCID: PMC9199891 DOI: 10.1111/cts.13255] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/27/2021] [Accepted: 01/23/2022] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to evaluate the relationship between polymorphisms in CYP2C19 and the single‐dose pharmacokinetics (PKs) of omeprazole in healthy Chinese volunteers. A 20 mg single dose of omeprazole (Losec) enteric‐coated capsules or tablets was orally administered to 656 healthy subjects from eight subcenters. The polymorphic alleles of CYP2C19*2, *3, and *17 were determined by Sanger sequencing and Agena mass array. Plasma concentrations of omeprazole were determined by high‐performance liquid‐chromatography tandem mass spectrometry. PK parameters of area under the concentration versus time curve (AUC)0‐t, AUC from zero to infinity (AUC0‐∞), maximum plasma concentration (Cmax), and terminal half‐life (t1/2) were significantly influenced by CYP2C19 phenotype (all p < 0.001) and diplotype (all p < 0.001), and the same results were obtained in the subgroup analysis of the effects of diet and dosage form. The polymorphisms of CYP2C19*2(rs4244285; all PK parameters p < 0.001) and *3(rs4986893; pCmax = 0.020, and the p values of other PK parameters were less than 0.001) were significantly associated with the PKs of omeprazole. For CYP2C19*17 (rs12248560), only t1/2 showed a significant correlation (p = 0.032), whereas other PK parameters did not. The present study demonstrated that the Pks of omeprazole is greatly influenced by CYP2C19.
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Affiliation(s)
- Shuang Zhou
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China.,Department of Pharmacy Administration and Clinical Pharmacy School of Pharmaceutical Science, Peking University, No. 38, XueYuan Road, Haidian District, Beijing, 100191, China
| | - Ran Xie
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China
| | - Xiaodan Zhang
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China
| | - Xu He
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China.,Department of Pharmacy Administration and Clinical Pharmacy School of Pharmaceutical Science, Peking University, No. 38, XueYuan Road, Haidian District, Beijing, 100191, China
| | - Jie Huang
- Center for Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Jungang Yin
- GCP Center, Jiangsu Province Hospital of Chinese Medicine, No.155 Hanzhong Road, Nanjing, 210029, China
| | - Man Liao
- Hebei Provincial Hospital of Traditional Chinese Medicine, No. 389, Zhong Shan East Road, Chang'an District, Shijiazhuang, 050011, China
| | - Ying Ding
- The Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qing Yang Road, Liangxi District, Wuxi, Jiangsu, 214023, China
| | - Dandan Yang
- Center of Clinical Pharmacology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Ying Liu
- The Office of Drug Clinical Trial Institution, Wuhan Jinyintan Hospitial, No. 1, Yintan Road, Dongxihu District, Wuhan, 430023, China
| | - Qian Zhang
- Department of Pharmacy, Shanghai Public Health Clinical Center, Fudan University, No. 2901 Caolang Rd, Jinshan District,Shanghai, 201508, China
| | - Guoping Yang
- Center for Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Fang Liu
- GCP Center, Jiangsu Province Hospital of Chinese Medicine, No.155 Hanzhong Road, Nanjing, 210029, China
| | - Shengjiang Guan
- Hebei Provincial Hospital of Traditional Chinese Medicine, No. 389, Zhong Shan East Road, Chang'an District, Shijiazhuang, 050011, China
| | - Qing He
- The Affiliated Wuxi People's Hospital of Nanjing Medical University, No. 299, Qing Yang Road, Liangxi District, Wuxi, Jiangsu, 214023, China
| | - Honggang Lou
- Center of Clinical Pharmacology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Fengyun Gong
- The Office of Drug Clinical Trial Institution, Wuhan Jinyintan Hospitial, No. 1, Yintan Road, Dongxihu District, Wuhan, 430023, China
| | - Xianmin Meng
- Department of Pharmacy, Shanghai Public Health Clinical Center, Fudan University, No. 2901 Caolang Rd, Jinshan District,Shanghai, 201508, China
| | - Qian Xiang
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China
| | - Xia Zhao
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China
| | - Yimin Cui
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing, 100034, China.,Institute of Clinical Pharmacology, Peking University, Haidian District, No.38 of XueYuan Road, Beijing, 100191, China
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7
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Yehya A, Altaany Z. A Decade of Pharmacogenetic Studies in Jordan: A Systemic Review. THE PHARMACOGENOMICS JOURNAL 2021; 21:543-550. [PMID: 33850297 DOI: 10.1038/s41397-021-00236-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/25/2021] [Accepted: 03/23/2021] [Indexed: 02/02/2023]
Abstract
The aim of this study was to perform a systematic overview of the pharmacogenetic studies conducted in Jordan. A structured search of Medline was conducted for articles over the last decade (January 2010-July 2020). Studies were classified by design, sample size, drug-gene combination, and the significance of the results. Thirty-two studies met the criteria for review. Most pharmacogenomic studies had a case-only design (n = 23). Only five studies included >500 participants. The total number of genetic variants in all studies was one hundred fifteen, which were found in forty genes, including dynamic (n = 27), and kinetic (n = 9) genes. The most commonly studied drugs were within the hematology and cardiology therapeutic areas and included statins, warfarin, aspirin, and clopidogrel. Most studies (n = 18) reported results with mixed p values [<0.05 and >0.05]. Pharmacogenomic research in Jordan is still in its infancy and is limited mainly to replication attempts. The need for standardization is imperative, especially in developing countries with scarce funding resources.
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Affiliation(s)
- Alaa Yehya
- PhD. Pharmacology - Department of Clinical Pharmacy and Pharmacy Practice, Faculty of Pharmacy, Yarmouk University, Irbid, Jordan.
| | - Zaid Altaany
- PhD. Biotechnology - Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
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8
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Zhang Y, Yu Y, Li H, Huang W, Wang P. Effects of Citri Reticulatae Pericarpium and grapefruit juice on the pharmacokinetics of omeprazole in rats. J Food Biochem 2021; 46:e13804. [PMID: 34080214 DOI: 10.1111/jfbc.13804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/10/2021] [Accepted: 05/07/2021] [Indexed: 12/14/2022]
Abstract
The effects of Citri Reticulatae Pericarpium (CRP) and grapefruit juice (GFJ) on the pharmacokinetics of omeprazole were investigated in this study. Sprague-Dawley rats were pretreated with CRP decoction or GFJ for 28 consecutive days. After a single intragastric administration of 6.0 mg/kg, the concentration of omeprazole in the plasma was determined by high-performance liquid chromatography (HPLC), and the pharmacokinetic parameters were calculated by Kinetica software 5.0. A high-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (HPLC-Q-TOF-MS) method was established to identify the chemical components in CRP decoction and GFJ. The results showed that the AUCt -∞ was significantly increased when coadministrated with CRP. The AUC0- t and AUC0-∞ was remarkably increased; the Cl was decreased when coadministrated with GFJ. A total of 31 and 28 bioactive compounds were identified in the CRP decoction and GFJ, respectively. Flavonoids and furanocoumarins, including hesperidin, hesperetin, naringenin, sinensetin, tangeretin, nobiletin, and 6',7'-dihydroxybergamottin, were simultaneously identified in CRP decoction and GFJ. This study indicates that the increased bioavailability of omeprazole may be due to the inhibition of hepatic cytochrome P450 enzymes, and the systemic exposure should be monitored when concomitant administration with CRP and GFJ. PRACTICAL APPLICATIONS: Citri Reticulatae Pericarpium (CRP) has been widely consumed as a daily condiment, functional food, and a traditional Chinese medicine. Omeprazole, primary metabolized by CYP450 enzymes, was usually coadministered with CRP for the treatment of gastrointestinal disease. Studies have confirmed that much fruit juices, including grapefruit juice, may affect drug metabolism enzymes. CRP and grapefruit (Citrus paradisi Macf.) belong to the genus Citrus and family Rutaceae with different species. Therefore, the pharmacokinetic interaction of CRP decoction and grapefruit juice with omeprazole is worthy of attention. The results of this study can provide basic pharmacological data support for the safe and effective clinical use of omeprazole. It can also provide a theoretical basis for the development of new functional products and daily application of CRP.
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Affiliation(s)
- Yan Zhang
- School of Preclinical Medicine, Chengdu University, Chengdu, China
| | - Yiping Yu
- School of Pharmacy, Shandong College of Traditional Chinese Medicine, Yantai, China
| | - Hong Li
- Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wenge Huang
- Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ping Wang
- Department of Pharmacology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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9
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Jeiziner C, Stäuble CK, Lampert ML, Hersberger KE, Meyer Zu Schwabedissen HE. Enriching Medication Review with a Pharmacogenetic Profile - A Case of Tamoxifen Adverse Drug Reactions. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2021; 14:279-286. [PMID: 33642872 PMCID: PMC7903951 DOI: 10.2147/pgpm.s285807] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 01/11/2021] [Indexed: 01/13/2023]
Abstract
Pharmacogenotyping is applied to determine the hereditable component of a patient's susceptibility to experience therapy failure and/or adverse drug reactions (ADRs). We present the case of a female patient diagnosed with breast cancer and treated with tamoxifen as recurrence therapy who experienced various ADRs. Pharmacogenotyping revealed variants in the cytochrome P450 (CYP) enzymes CYP2D6, CYP2C9, and CYP2C19. The observed genotype was associated with a risk for lower tamoxifen efficacy. Aside from the tamoxifen therapy, the comedication was reviewed for the influence of the patient’s pharmacogenetic profile. As a result of this pharmacist-led medication review with pharmacogenetic analyses, concrete genotype-driven recommendations for the treating gynecologist were compiled. This case revealed the added value of a large pharmacogenetic panel and the complexity of integrating a pharmacogenetic profile into a recommendation.
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Affiliation(s)
- Chiara Jeiziner
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Céline K Stäuble
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.,Biopharmacy, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Markus L Lampert
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Kurt E Hersberger
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
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10
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Ochoa D, Román M, Cabaleiro T, Saiz-Rodríguez M, Mejía G, Abad-Santos F. Effect of food on the pharmacokinetics of omeprazole, pantoprazole and rabeprazole. BMC Pharmacol Toxicol 2020; 21:54. [PMID: 32711578 PMCID: PMC7382816 DOI: 10.1186/s40360-020-00433-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 07/16/2020] [Indexed: 12/15/2022] Open
Abstract
Background The pharmacokinetics of proton pump inhibitors (PPIs) may be affected by food intake. We aimed to evaluate the effect of food on the pharmacokinetics of omeprazole, rabeprazole, and pantoprazole. Setting The study population comprised 186 healthy volunteers participating in 6 bioequivalence clinical trials. Method Subjects were evaluated to determine the effect of a high-fat breakfast on the pharmacokinetics of omeprazole (n = 36), rabeprazole (n = 69), and pantoprazole (n = 81). Main outcome measure Drug plasma concentrations were measured using high-performance liquid chromatography coupled to mass spectrometry. Results Food affected the pharmacokinetics of omeprazole (increased Tmax and decreased AUC and Cmax), pantoprazole (increased Tmax and decreased AUC), and rabeprazole (increased Tmax, Cmax and half-life). Food increased variability in Tmax for all 3 drugs, delaying absorption around 3 to 4 h and until 20 h in some subjects. Conclusion As food delays the absorption of PPIs and increases their variability, it would be better to administer these drugs under fasting conditions. Trial registration European Union Drug Regulating Authorities Clinical Trials Database: EudraCT: 2004–003863-59 (registration date 05/MAR/2004), EudraCT 2006–001162-17 (registration date 17-MAR-2006), EudraCT: 2007–002489-37 (registration date 12-JUN-2007), EudraCT: 2007–002490-31 (registration date 12-JUN-2007), EudraCT: 2010–024029-19 (registration date 23-NOV-2010).
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Affiliation(s)
- Dolores Ochoa
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), C/Diego de León 62, 28006, Madrid, Spain.,UICEC Hospital Universitario de La Princesa, Plataforma SCReN (Spanish Clinical Reseach Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Manuel Román
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), C/Diego de León 62, 28006, Madrid, Spain.,UICEC Hospital Universitario de La Princesa, Plataforma SCReN (Spanish Clinical Reseach Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Teresa Cabaleiro
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), C/Diego de León 62, 28006, Madrid, Spain.,UICEC Hospital Universitario de La Princesa, Plataforma SCReN (Spanish Clinical Reseach Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Miriam Saiz-Rodríguez
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), C/Diego de León 62, 28006, Madrid, Spain.,Research Unit, Fundación Burgos por la Investigación de la Salud, Hospital Universitario de Burgos, Burgos, Spain
| | - Gina Mejía
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), C/Diego de León 62, 28006, Madrid, Spain.,UICEC Hospital Universitario de La Princesa, Plataforma SCReN (Spanish Clinical Reseach Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Francisco Abad-Santos
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), C/Diego de León 62, 28006, Madrid, Spain. .,UICEC Hospital Universitario de La Princesa, Plataforma SCReN (Spanish Clinical Reseach Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain. .,Pharmacology Department, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.
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11
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Effects of genetic polymorphisms on the pharmacokinetics and pharmacodynamics of proton pump inhibitors. Pharmacol Res 2020; 152:104606. [DOI: 10.1016/j.phrs.2019.104606] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023]
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12
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Bain KT, McGain D, Cicali EJ, Knowlton CH, Michaud V, Turgeon J. Precision medication: An illustrative case series guiding the clinical application of multi-drug interactions and pharmacogenomics. Clin Case Rep 2020; 8:305-312. [PMID: 32128178 PMCID: PMC7044418 DOI: 10.1002/ccr3.2604] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 11/06/2019] [Accepted: 11/21/2019] [Indexed: 12/22/2022] Open
Abstract
Precision medication entails selecting the precise medication, dose, and timing of administration. Multi-drug interactions and genetics significantly affect precision medication. In this article, we present two simulated cases for real-world applications of precision medication. Clinicians may need to acquire additional skills to apply the principles illustrated by these cases.
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Affiliation(s)
- Kevin T. Bain
- Tabula Rasa HealthCareMoorestownNJUSA
- Department of PharmacyUniversity of the SciencesPhiladelphiaPAUSA
| | | | - Emily J. Cicali
- Department of Pharmacotherapy and Translational ResearchUniversity of FloridaGainesvilleFLUSA
| | | | - Veronique Michaud
- Tabula Rasa HealthCareMoorestownNJUSA
- Faculty of PharmacyUniversité de MontréalMontrealQCCanada
| | - Jacques Turgeon
- Tabula Rasa HealthCareMoorestownNJUSA
- Faculty of PharmacyUniversité de MontréalMontrealQCCanada
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13
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Zhou L, Sharma P, Yeo KR, Higashimori M, Xu H, Al-Huniti N, Zhou D. Assessing pharmacokinetic differences in Caucasian and East Asian (Japanese, Chinese and Korean) populations driven by CYP2C19 polymorphism using physiologically-based pharmacokinetic modelling. Eur J Pharm Sci 2019; 139:105061. [DOI: 10.1016/j.ejps.2019.105061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 10/26/2022]
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14
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Chen WT, Shie CB, Yang CC, Lee TM. Blockade of Cardiac Proton Pump Impairs Ventricular Remodeling Through a Superoxide-DDAH-Dependent Pathway in Infarcted Rats. ACTA CARDIOLOGICA SINICA 2019; 35:165-178. [PMID: 30930564 DOI: 10.6515/acs.201903_35(2).20180917a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Proton pump inhibitors (PPIs) are frequently used to prevent or treat peptic ulcers. Recently, PPIs have been shown to increase the risk of myocardial infarction. The purpose of this study was to determine whether PPIs adversely affect ventricular remodeling in infarcted rats. Methods Male Wistar rats were randomly assigned to receive either vehicle, omeprazole, omeprazole + vitamin C, omeprazole + olmesartan, or famotidine treatment for 4 weeks starting 24 hours after inducing myocardial infarction by ligating coronary arteries. Results Compared with vehicle-treated infarcted rats, omeprazole-treated infarcted rats had significant changes with reduced myocardial vitamin C levels, increased oxidant production, and decreased dimethylarginine dimethylaminohydrolase 2 (DDAH2) activity, which in turn increased asymmetric dimethylarginine (ADMA) levels and impaired ventricular remodeling. With gastric protection similar to omeprazole, the H2 blocker famotidine had no effect on ventricular remodeling. In contrast to the in vivo results, the ex vivo study showed similar superoxide and DDAH2 protein levels between vehicle- and omeprazole-treated infarcted rats, suggesting involvement of gastric vitamin C uptake rather than myocardial vitamin C in mediating the impaired axis of vitamin C-superoxide-DDAH2 in the in vivo measurements. The administration of PPIs was associated with impaired DDAH2 expression and increased myocardial ADMA, which impaired ventricular remodeling after infarction. These effects were prevented by the coadministration of vitamin C or olmesartan. Conclusions Our results indicate that the administration of PPIs was associated with impaired DDAH2 expression and increased myocardial ADMA by reducing gastric vitamin C uptake, which impaired ventricular remodeling after infarction.
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Affiliation(s)
| | - Chang-Bie Shie
- Gastrointestinal Section, Department of Medicine, China Medical University-An Nan Hospital, Tainan
| | | | - Tsung-Ming Lee
- Cardiovascular Institute.,Department of Medicine, School of Medicine, China Medical University, Taichung.,Department of Internal Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan
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15
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Chiang CW, Zhang P, Wang X, Wang L, Zhang S, Ning X, Shen L, Quinney SK, Li L. Translational High-Dimensional Drug Interaction Discovery and Validation Using Health Record Databases and Pharmacokinetics Models. Clin Pharmacol Ther 2017; 103:287-295. [PMID: 29052226 DOI: 10.1002/cpt.914] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/10/2017] [Accepted: 10/10/2017] [Indexed: 11/07/2022]
Abstract
Polypharmacy increases the risk of drug-drug interactions (DDIs). Combining epidemiological studies with pharmacokinetic modeling, we detected and evaluated high-dimensional DDIs among 30 frequent drugs. Multidrug combinations that increased the risk of myopathy were identified in the US Food and Drug Administration Adverse Event Reporting System (FAERS) and electronic medical record (EMR) databases by a mixture drug-count response model. CYP450 inhibition was estimated among the 30 drugs in the presence of 1 to 4 inhibitors using in vitro / in vivo extrapolation. Twenty-eight three-way and 43 four-way DDIs had significant myopathy risk in both databases and predicted increases in the area under the concentration-time curve ratio (AUCR) >2-fold. The high-dimensional DDI of omeprazole, fluconazole, and clonidine was associated with a 6.41-fold (FAERS) and 18.46-fold (EMR) increased risk of myopathy local false discovery rate (<0.005); the AUCR of omeprazole in this combination was 9.35. The combination of health record informatics and pharmacokinetic modeling is a powerful translational approach to detect high-dimensional DDIs.
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Affiliation(s)
- Chien-Wei Chiang
- Center for Computational Biology and Bioinformatics, School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Pengyue Zhang
- Department of Biomedical Informatics, College of Medicine, Ohio State University, Columbus, Ohio, USA
| | - Xueying Wang
- Institute of Intelligent System and Bioinformatics, College of Automation, Harbin Engineering University, Harbin, P.R. China
| | - Lei Wang
- Department of Biomedical Informatics, College of Medicine, Ohio State University, Columbus, Ohio, USA.,Institute of Intelligent System and Bioinformatics, College of Automation, Harbin Engineering University, Harbin, P.R. China
| | - Shijun Zhang
- Center for Computational Biology and Bioinformatics, School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Xia Ning
- Center for Computational Biology and Bioinformatics, School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Li Shen
- Center for Computational Biology and Bioinformatics, School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Sara K Quinney
- Center for Computational Biology and Bioinformatics, School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Lang Li
- Department of Biomedical Informatics, College of Medicine, Ohio State University, Columbus, Ohio, USA
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16
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Pharmacokinetics of CYP2C9, CYP2C19, and CYP2D6 substrates in healthy Chinese and European subjects. Eur J Clin Pharmacol 2017; 74:285-296. [PMID: 29181698 DOI: 10.1007/s00228-017-2375-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 11/08/2017] [Indexed: 01/16/2023]
Abstract
PURPOSE The aim of this analysis is to compare the pharmacokinetics of drug substrates in healthy Chinese and European subjects of aligned CYP2C9, CYP2C19, or CYP2D6 enzyme activity, providing further insight into drivers of interethnic differences in pharmacokinetics. METHODS Following identification of appropriate drug substrates, a comprehensive and structured literature search was conducted to identify single-dose pharmacokinetic data in healthy Chinese or European subjects with reported CYP2C9, CYP2C19, or CYP2D6 activity (genotype or phenotype). The ratio of drug AUC in the Chinese and European subjects classified with aligned enzyme activity was calculated (ethnicity ratio (ER)). RESULTS For 22/25 drugs identified, the ERs calculated indicated no or only limited interethnic differences in exposure (<twofold) in Chinese and European subjects with aligned polymorphic enzyme activity. The interethnic differences observed can reflect differences across populations in additional determinants of pharmacokinetics, although the notable between study variation and change over time in methods used to assign enzyme activity may also be contributing factors. There was no association between drug substrate fraction metabolized (fm) for CYP2C9, CYP2C19, or CYP2D6 and the ERs calculated. CONCLUSION The spectrum of pharmacokinetic determinants for each drug substrate and their differences across ethnic groups must be considered on a case-by-case basis in addition to metabolism by CYP2C9, CYP2C19, or CYP2D6. This analysis has also highlighted the challenges which arise when comparing published datasets if consistent methods to assign polymorphic enzyme activity have not been used.
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17
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Piatkov I, Caetano D, Assur Y, Lau SL, Coelho M, Jones T, Nguyen T, Boyages S, McLean M. CYP2C19*17 protects against metabolic complications of clozapine treatment. World J Biol Psychiatry 2017; 18:521-527. [PMID: 28664816 DOI: 10.1080/15622975.2017.1347712] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Clozapine (CZ) is the most effective drug for managing treatment-resistant schizophrenic disorders. Its use has been limited due to adverse effects, which include weight gain and new-onset diabetes, but the incidence of these varies between patients. METHODS We investigated 187 Clozapine Clinic patients (of whom 137 consented for genotyping) for the presence of CYP2C19*17 and its association with CZ and norclozapine (NCZ) levels, and clinical outcomes. RESULTS Thirty-nine percent of genotyped patients were carriers of the CYP2C 19*17 polymorphism. This group demonstrated significantly higher NCZ serum levels, and significantly lower fasting glucose (5.66 ± 1.19 vs 6.72 ± 3.01 mmol/l, P = 0.009) and Hb1Ac (35.36 ± 4.78 vs 49.40 ± 20.60 mmol/mol, P = 0.006) levels compared to non-carriers of this polymorphism. CZ-treated patients with CYP2C19*17/*17 had a significantly lower prevalence of diabetes as well as a higher likelihood of clinical improvement of their schizophrenia, compared to those without this polymorphism (P = 0.012 and P = 0.031, respectively). CONCLUSIONS Our data suggest that CYP2C19*17 ultra-rapid-metaboliser status is a protective factor against the development of diabetes during clozapine treatment, and increases the likelihood of improvement in schizophrenia. The role of NCZ in treatment response and side effects, including metabolic syndrome, warrants further pharmacogenetic, pharmacokinetic and pharmacodynamic studies.
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Affiliation(s)
- Irina Piatkov
- a Molecular Research Laboratory, Blacktown Clinical School and Research Centre , Blacktown Hospital, WSU/WSLHD , Blacktown , Australia
| | - Dorgival Caetano
- b Western Sydney University School of Medicine , Campbelltown , NSW , Australia.,c Blacktown Mental Health Service , Blacktown Hospital, WSLHD , Blacktown , Australia
| | - Yolinda Assur
- c Blacktown Mental Health Service , Blacktown Hospital, WSLHD , Blacktown , Australia
| | - Sue Lynn Lau
- b Western Sydney University School of Medicine , Campbelltown , NSW , Australia
| | - Micheline Coelho
- a Molecular Research Laboratory, Blacktown Clinical School and Research Centre , Blacktown Hospital, WSU/WSLHD , Blacktown , Australia
| | - Trudi Jones
- a Molecular Research Laboratory, Blacktown Clinical School and Research Centre , Blacktown Hospital, WSU/WSLHD , Blacktown , Australia
| | - Tristan Nguyen
- a Molecular Research Laboratory, Blacktown Clinical School and Research Centre , Blacktown Hospital, WSU/WSLHD , Blacktown , Australia
| | - Steven Boyages
- b Western Sydney University School of Medicine , Campbelltown , NSW , Australia
| | - Mark McLean
- b Western Sydney University School of Medicine , Campbelltown , NSW , Australia
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18
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Lin YA, Wang H, Gu ZJ, Wang WJ, Zeng XY, Du YL, Ying SS, Zhang BH. Effect of CYP2C19 Gene Polymorphisms on Proton Pump Inhibitor, Amoxicillin, and Levofloxacin Triple Therapy for Eradication of Helicobacter Pylori. Med Sci Monit 2017; 23:2701-2707. [PMID: 28577017 PMCID: PMC5467706 DOI: 10.12659/msm.901514] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The effects of PPI are variable owing to the CYP2C19 polymorphisms. However, whether the polymorphisms could affect the Hp eradication efficacy of triple therapy is still not clear. The present study aimed to assess the effects of CYP2C19 gene polymorphisms on proton pump inhibitor (PPI), amoxicillin, and levofloxacin triple therapy for Helicobacter pylori (Hp) eradication. MATERIAL AND METHODS We randomly assigned 160 Hp-positive patients with chronic gastritis to 2 groups to receive either 20 mg bid omeprazole (OAL group, n=80) or 10 mg bid rabeprazole (RAL group, n=80), combined with 1000 mg bid amoxicillin and 500 mg qd levofloxacin. The 2 groups were treated for 10 days. The CYP2C19 genotypes included wild-type, M1 mutant gene (*2, the mutation of exon 5), and M2 mutant gene (*3, the mutation of exon 4) identified by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFIP). According to CYP2C19 genotype combinations, the patients were divided into extensive metabolizer (EM), intermediate metabolizer (IM), and poor metabolizer (PM) subgroups. The eradication efficacy of Hp was evaluated by 14C-UBT at 28 days after treatment. RESULTS The trial was completed by 155 patients. Hp eradication rates in OAL and RAL groups were 78.2% and 88.3%, respectively, on per-protocol (PP) analysis, indicating no significant difference (P>0.05). Regarding CYP2C19 genotypes, eradication rates of 60.7%, 84.2%, and 100% were obtained for EM, IM, and PM subgroups, respectively, of the OAL group. EM group eradication rates were significantly lower than IM and PM group values (P<0.05). In the RAL group, no such difference was observed (P>0.05). Hp eradication rates were significantly lower in the EM subgroup of the OAL group compared with that of the RAL group. CONCLUSIONS Hp eradication rates were higher in the RAL group than in OAL-treated patients. Interestingly, omeprazole-based therapy was significantly affected by the CYP2C19 genotype, unlike the rabeprazole-based therapy.
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Affiliation(s)
- Yun-An Lin
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Hong Wang
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Zhu-Jun Gu
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Wen-Jia Wang
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Xiao-Yan Zeng
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Yan-Lei Du
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Song-Song Ying
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Bo-Hua Zhang
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou, Guangdong, China (mainland)
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Ye F, Yan S. Association between blood concentration of rabeprazole enteric-coated tablets and CYP2C19 gene polymorphisms. Shijie Huaren Xiaohua Zazhi 2016; 24:4479-4483. [DOI: 10.11569/wcjd.v24.i33.4479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM To investigate the relationship between blood concentration of rabeprazole sodium enteric-coated tablets and CYP2C19 gene polymorphisms.
METHODS Three hundred volunteers were randomly selected from June 2012 to August 2015 at Jiande Hospital of Traditional Chinese Medicine. At 12 h after each of the volunteers took 20 mg of rabeprazole sodium enteric-coated tablets, blood samples were collected to measure blood drug concentration by high performance liquid chromatography (HPLC). Thereafter, CYP2C19*2, CYP2C19*3, and CYP2C19*17 mutations were detected. Based on the genotype, volunteers were divided into different groups to compare pharmacokinetic parameters between different groups.
RESULTS Genotype analysis showed CYP2C19*1/*1 (homEMs) in 60 cases, CYP2C19*1/*2 (hetEMs) in 200, and CYP2C19*2/*2 (PMs) in 40. No CYP2C19*17 genotype was detected. Pharmacokinetic parameters were analyzed, which revealed no significant differences in Tmax in the three groups (P > 0.05). However, t1/2 was significantly different in any two groups (P < 0.05). AUC0-1 and AUC0-∞ showed a significant difference between patients with CYP2C19*1/*1 genotype and those with CYP2C19*1/*2 or CYP2C19*2/*2 (P < 0.05). Cmax between patients with homEMs and hetEMs genotypes differed significantly (P < 0.05).
CONCLUSION HPLC is a simple, accurate and suitable method for the study of pharmacokinetics of rabeprazole sodium enteric-coated tablets. CYP2C19 gene polymorphisms have an influence on the blood concentration and pharmacokinetics of rabeprazole enteric-coated tablets.
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20
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Kuo CH, Liu CJ, Yang CC, Kuo FC, Hu HM, Shih HY, Wu MC, Chen YH, Wang HMD, Ren JL, Wu DC, Chang LL. A Rapid and Accurate Method to Evaluate Helicobacter pylori Infection, Clarithromycin Resistance, and CYP2C19 Genotypes Simultaneously From Gastric Juice. Medicine (Baltimore) 2016; 95:e3458. [PMID: 27227911 PMCID: PMC4902335 DOI: 10.1097/md.0000000000003458] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Because Helicobacter pylori (H pylori) would cause carcinogenesis of the stomach, we need sufficient information for deciding on an appropriate strategy of eradication. Many factors affect the efficacy of eradication including antimicrobial resistance (especially clarithromycin resistance) and CYP2C19 polymorphism. This study was to survey the efficiency of gastric juice for detecting H pylori infection, clarithromycin resistance, and CYP2C19 polymorphism.The specimens of gastric juice were collected from all patients while receiving gastroscopy. DNA was extracted from gastric juice and then urease A and cag A were amplified by polymerase chain reaction (PCR) for detecting the existence of H pylori. By PCR-restriction fragment length polymorphism (PCR-RFLP), the 23S rRNA of H pylori and CYP2C19 genotypes of host were examined respectively. During endoscopy examination, biopsy-based specimens were also collected for rapid urease test, culture, and histology. The blood samples were also collected for analysis of CYP2C19 genotypes. We compared the results of gastric juice tests with the results of traditional clinical tests.When compared with the results from traditional clinical tests, our results from gastric juice showed that the sensitivity (SEN), specificity (SPE), positive predictive value (PPV), negative predictive value (NPV), and accuracy to detect H pylori infection were 92.1% (105/114), 92.9% (143/154), 90.5% (105/116), 94.1% (143/152), and 92.5% (248/268), respectively. The SEN, SPE, PPV, and NPV to detect clarithromycin resistance were 97.3% (36/37), 91.5% (43/47), 90.0% (36/40), and 97.7% (43/44), respectively. By using PCR-RFLP, the consistency of human CYP2C19 gene polymorphism from blood samples and gastric juice was as high as 94.9% (149/157).The manipulated gastric juice is actually an effective diagnostic sample for evaluation of H pylori existence, clarithromycin resistance, and host CYP2C19 polymorphism.
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Affiliation(s)
- Chao-Hung Kuo
- From the Division of Gastroenterology, Department of Internal Medicine (C-HK, C-JL, H-MH, H-YS, M-CW, D-CW), Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Medicine, Faculty of Medicine, College of Medicine (C-HK, H-MH, Y-HC, D-CW), Kaohsiung Medical University, Kaohsiung, Taiwan; Center for Stem Cell Research (C-HK, H-MW, D-CW), Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Microbiology and Immunology (C-CY, L-LC), Kaohsiung Medical University, Kaohsiung, Taiwan; School of Medicine, College of Medicine (F-CK), E-Da Hospital, I-Shou University, Kaohsiung, Taiwan; Department of Internal Medicine (H-YS, M-CW, D-CW), Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan; Division of Infectious Diseases, Department of Internal Medicine (Y-HC), Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Fragrance and Cosmetic Science (H-MW), Kaohsiung Medical University, Kaohsiung, Taiwan; and Department of Gastroenterology (J-LR), Zhongshan Hospital affiliated to Xiamen University, Xiamen, Fujian, China; Center for Infectious Disease and Cancer Research (D-CW), Kaohsiung Medical University, Kaohsiung, Taiwan
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Application of a high-throughput, parallel HPLC system for quantitative chiral analysis of pantoprazole. Bioanalysis 2015; 7:2981-90. [DOI: 10.4155/bio.15.215] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: Chromatographic separation of enantiomers is considered a task in analytical chemistry particularly for high sample throughput. This paper describes a high-throughput parallel HPLC–MS/MS method for the determination of pantoprazole enantiomers. Results: Baseline separation of pantoprazole enantiomers was achieved on a Chiralcel OZ-RH column in a run time of 4.5 min. Assays for enantiomers were linear with satisfactory intra- and inter-day precision and accuracy. The assay was suitable for high-throughput analysis as shown by its successful application to a chiral PK study in beagle dog. Conclusion: A high-throughput parallel HPLC–MS/MS assay for pantoprazole has been developed and validated. This method provides nearly twofold increased sample throughput, and was shown to be suitable for application in PK studies.
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Antagonism of Fluconazole and a Proton Pump Inhibitor against Candida albicans. Antimicrob Agents Chemother 2015; 60:1145-7. [PMID: 26596946 DOI: 10.1128/aac.02043-15] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 11/17/2015] [Indexed: 01/09/2023] Open
Abstract
Hospitalized ill patients, at risk for invasive candidiasis, often receive multiple medications, including proton pump inhibitors (PPIs). The antifungal fluconazole perturbs the vacuolar proton ATPase. The PPI omeprazole antagonized Candida albicans growth inhibition by fluconazole. A C. albicans codon-adapted pHluorin, Ca.pHluorin, was generated to measure cytosolic pH. The fungal cytosol was acidified by omeprazole and realkalinized by coexposure to fluconazole. Vacuolar pH was alkalinized by fluconazole. Off-target effects of any medication on fungal pathogens may occur.
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Interethnic variation of CYP2C19 alleles, 'predicted' phenotypes and 'measured' metabolic phenotypes across world populations. THE PHARMACOGENOMICS JOURNAL 2015; 16:113-23. [PMID: 26503820 DOI: 10.1038/tpj.2015.70] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/15/2015] [Accepted: 08/19/2015] [Indexed: 02/08/2023]
Abstract
The present study evaluates the worldwide frequency distribution of CYP2C19 alleles and CYP2C19 metabolic phenotypes ('predicted' from genotypes and 'measured' with a probe drug) among healthy volunteers from different ethnic groups and geographic regions, as well as the relationship between the 'predicted' and 'measured' CYP2C19 metabolic phenotypes. A total of 52 181 healthy volunteers were studied within 138 selected original research papers. CYP2C19*17 was 42- and 24-fold more frequent in Mediterranean-South Europeans and Middle Easterns than in East Asians (P<0.001, in both cases). Contrarily, CYP2C19*2 and CYP2C19*3 alleles were more frequent in East Asians (30.26% and 6.89%, respectively), and even a twofold higher frequency of these alleles was found in Native populations from Oceania (61.30% and 14.42%, respectively; P<0.001, in all cases), which may be a consequence of genetic drift process in the Pacific Islands. Regarding CYP2C19 metabolic phenotype, poor metabolizers (PMs) were more frequent among Asians than in Europeans, contrarily to the phenomenon reported for CYP2D6. A correlation has been found between the frequencies of CYP2C19 poor metabolism 'predicted' from CYP2C19 genotypes (gPMs) and the poor metabolic phenotype 'measured' with a probe drug (mPMs) when subjects are either classified by ethnicity (r=0.94, P<0.001) or geographic region (r=0.99, P=0.002). Nevertheless, further research is needed in African and Asian populations, which are under-represented, and additional CYP2C19 variants and the 'measured' phenotype should be studied.
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