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Kubbara A, Amundson WH, Herman A, Lee AM, Bishop JR, Kim HJ. Genetic variations in idiopathic pulmonary fibrosis and patient response to pirfenidone. Heliyon 2023; 9:e18573. [PMID: 37560683 PMCID: PMC10407116 DOI: 10.1016/j.heliyon.2023.e18573] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/14/2023] [Accepted: 07/20/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Genetic variations in Idiopathic Pulmonary Fibrosis (IPF) affect survival and outcomes. Current antifibrotic agents are managed based on the patient's reported side effects, although certain single nucleotide polymorphisms (SNPs) might alter treatment response and survival depending on the antifibrotic administered. This study investigated variations in response and outcomes to pirfenidone based on patients-specific genetic profiles. METHODS Retrospective clinical data were collected from 56 IPF patients and had blood drawn for DNA extraction between 7/2013 and 3/2016, with the last patient followed until 10/2018. Nine SNPs were selected for pharmacogenetic investigation based on prior associations with IPF treatment outcomes or implications for pirfenidone metabolism. Genetic variants were examined in relation to clinical data and treatment outcomes. RESULTS Of the 56 patients, 38 were males (67.85%). The average age of IPF at diagnosis was 66.88 years. At the initiation of pirfenidone, the average percent predicted FVC was 70.7%, and the average DLCO percent predicted was 50.02% (IQR 40-61%). Among the genetic variants tested, the TOLLIP rs5743890 risk allele was significantly associated with improved survival, with increasing pirfenidone duration. This finding was observed with CC or CT genotype carriers but not for those with the TT genotype (p = 0.0457). Similarly, the TGF-B1 rs1800470 risk allele was also significantly associated with improved survival with longer pirfenidone therapy (p = 0.0395), even though it was associated with disease progression. CONCLUSION This pilot study suggests that in IPF patients, the TOLLIP rs5743890 genotypes CC and CT, as well as TGF-B1 rs 1800470 may be associated with increased survival when treated with pirfenidone.
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Affiliation(s)
- Aahd Kubbara
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care, and Sleep, University of Minnesota, Minneapolis, United States
| | - William H. Amundson
- Pulmonary and Critical Care Medicine, Regions Hospital, University of Minnesota, St. Paul, Minneapolis, MN, United States
| | - Adam Herman
- University of Minnesota, Supercomputing Institute, Minneapolis, United States
| | - Adam M. Lee
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, United States
| | - Jeffrey R. Bishop
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, United States
| | - Hyun Joo Kim
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care, and Sleep, University of Minnesota, Minneapolis, United States
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Ahire D, Kruger L, Sharma S, Mettu VS, Basit A, Prasad B. Quantitative Proteomics in Translational Absorption, Distribution, Metabolism, and Excretion and Precision Medicine. Pharmacol Rev 2022; 74:769-796. [PMID: 35738681 DOI: 10.1124/pharmrev.121.000449] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A reliable translation of in vitro and preclinical data on drug absorption, distribution, metabolism, and excretion (ADME) to humans is important for safe and effective drug development. Precision medicine that is expected to provide the right clinical dose for the right patient at the right time requires a comprehensive understanding of population factors affecting drug disposition and response. Characterization of drug-metabolizing enzymes and transporters for the protein abundance and their interindividual as well as differential tissue and cross-species variabilities is important for translational ADME and precision medicine. This review first provides a brief overview of quantitative proteomics principles including liquid chromatography-tandem mass spectrometry tools, data acquisition approaches, proteomics sample preparation techniques, and quality controls for ensuring rigor and reproducibility in protein quantification data. Then, potential applications of quantitative proteomics in the translation of in vitro and preclinical data as well as prediction of interindividual variability are discussed in detail with tabulated examples. The applications of quantitative proteomics data in physiologically based pharmacokinetic modeling for ADME prediction are discussed with representative case examples. Finally, various considerations for reliable quantitative proteomics analysis for translational ADME and precision medicine and the future directions are discussed. SIGNIFICANCE STATEMENT: Quantitative proteomics analysis of drug-metabolizing enzymes and transporters in humans and preclinical species provides key physiological information that assists in the translation of in vitro and preclinical data to humans. This review provides the principles and applications of quantitative proteomics in characterizing in vitro, ex vivo, and preclinical models for translational research and interindividual variability prediction. Integration of these data into physiologically based pharmacokinetic modeling is proving to be critical for safe, effective, timely, and cost-effective drug development.
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Affiliation(s)
- Deepak Ahire
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Laken Kruger
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Sheena Sharma
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Vijaya Saradhi Mettu
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Abdul Basit
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
| | - Bhagwat Prasad
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington
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Karamchand S, Williams M, Naidoo P, Decloedt E, Allwood B. Post-tuberculous lung disease: should we be using Theophylline? J Thorac Dis 2021; 13:1230-1238. [PMID: 33717595 PMCID: PMC7947523 DOI: 10.21037/jtd-20-1298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Tuberculosis affects 10 million people and over 320,000 South Africans every year. A significant proportion of patients treated for tuberculosis develop post-tuberculous lung disease (PTBLD), a disease of chronic respiratory impairment for which there is a lack of affordable treatment options. PTBLD a heterogenous disorder that shares phenotypical features with chronic obstructive lung disease, bronchiectasis, lung fibrosis and destruction as well as pulmonary hypertension. There remains a paucity of proven pharmacotherapy for the management of PTBLD. Theophylline, a widely available and affordable medicine that has largely fell out of favour in high-income settings due to its toxicity and narrow therapeutic index, may be repositioned for the treatment of PTBLD. In this review, we unpack the potential role of theophylline in the management of PTBLD by reviewing the evidence for its bronchodilatory, anti-inflammatory and potential pleotrophic effects.
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Affiliation(s)
- Sumanth Karamchand
- Division of Pulmonology, Western Cape Department of Health, Tygerberg Hospital, Bellville, South Africa
| | - Morne Williams
- Division of Pulmonology, Western Cape Department of Health, Tygerberg Hospital, Bellville, South Africa
| | - Poobalan Naidoo
- Department of Informatics, School of Health Professions, Rutgers University, New Jersey, USA
| | - Eric Decloedt
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital, Bellville, South Africa
| | - Brian Allwood
- Division of Pulmonology, Western Cape Department of Health, Tygerberg Hospital, Bellville, South Africa
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Shi H, Xu J, Feng Q, Sun J, Yang Y, Zhao J, Zhou X, Niu H, He P, Liu J, Li Q, Ding Y. The effect of CYP3A4 genetic variants on the susceptibility to chronic obstructive pulmonary disease in the Hainan Han population. Genomics 2020; 112:4399-4405. [DOI: 10.1016/j.ygeno.2020.07.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/14/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
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The correlation between CYP4F2 variants and chronic obstructive pulmonary disease risk in Hainan Han population. Respir Res 2020; 21:86. [PMID: 32295578 PMCID: PMC7161254 DOI: 10.1186/s12931-020-01348-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 04/01/2020] [Indexed: 01/19/2023] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is a complex pulmonary disease. Cytochrome P450 family 4 subfamily F member 2 (CYP4F2) belongs to cytochrome P450 superfamily of enzymes responsible for metabolism, its single nucleotide polymorphisms (SNPs) were reported to be involved in metabolism in the development of many diseases. The study aimed to assess the relation between CYP4F2 SNPs and COPD risk in the Hainan Han population. Method We genotyped five SNPs in CYP4F2 in 313 cases and 508 controls by Agena MassARRAY assay. The association between CYP4F2 SNPs and COPD risk were assessed by χ2 test and genetic models. Besides, logistic regression analysis was introduced into the calculation for odds ratio (OR) and 95% confidence intervals (CIs). Results Allele model analysis indicated that rs3093203 A was significantly correlated with an increased risk of COPD. Also, rs3093193 G and rs3093110 G were associated with a reduced COPD risk. In the genetic models, we found that rs3093203 was related to an increased COPD risk, while rs3093193 and rs3093110 were related to a reduced risk of COPD. After gender stratification, rs3093203, rs3093193 and rs3093110 showed the association with COPD risk in males. With smoking stratification, rs3093144 was significantly associated with an increased risk of COPD in smokers. CYP4F2 SNPs were significantly associated with COPD risk. Conclusions Our findings illustrated potential associations between CYP4F2 polymorphisms and COPD risk. However, large-scale and well-designed studies are needed to determine conclusively the association between the CYP4F2 SNPs and COPD risk.
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Cai Y, Xu W, Liu H, Wang F, Duan L, Li H, Li M, Li Y, Han L, Xiao H. Effects of cigarette smoking on older chinese men treated with clopidogrel monotherapy or aspirin monotherapy: a prospective study. Platelets 2019; 31:667-673. [PMID: 31556777 DOI: 10.1080/09537104.2019.1667494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We investigated the comparative effects of smoking status on outcomes in older Chinese men receiving aspirin or clopidogrel monotherapy. This was a prospective observational study of outcomes in 668 men aged ≥ 60 years undergoing annual health examination in the Chinese People's Liberation Army General Hospital from March-April 2017. All patients received regular treatment with aspirin or clopidogrel. Platelet aggregation and phenotyping for rs762551 were measured in all patients. We recorded all major adverse cardiovascular and cerebrovascular events; namely, all-cause death, myocardial infarction, stroke, transient ischemic attack, and unstable angina. In the clopidogrel subgroup, homozygous carriers (AA) of the CYP1A2*1F gene (rs762551, 163C>A) appeared more frequently in smokers than in nonsmokers (45.6% vs 32.7%, p = .035). Adenosine diphosphate-induced platelet aggregation using light transmittance aggregometry was lower in smokers compared with nonsmokers (44.97 ± 20.05% vs 51.98 ± 19.38%, respectively; p = .0018). Smokers (n = 103) had a decreased risk of major adverse cardiovascular and cerebrovascular events, compared with nonsmokers [n = 159; hazard ratio, 0.466; 95% confidence interval: 0.262-0.829, p = .008]. In the aspirin subgroup, AA-induced platelet aggregation showed no significant difference regarding smoking vs nonsmoking status (30.90 ± 32.21 vs 29.78 ± 31.47, respectively; p = .771). However, we saw a significant increase in adverse clinical events in the smoking group (n = 148) compared with the nonsmoking group (n = 258; hazard ratio = 1.907, 95% confidence interval: 1.128-3.225; p = .016). In older Chinese men, active smokers benefitted from clopidogrel therapy compared with aspirin. Long-term cigarette smoking may contribute to increased variations in CYP1A2*1F, but the variations do not fully explain the smoking paradox.
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Affiliation(s)
- Yulun Cai
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Weihao Xu
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Hongbin Liu
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Fan Wang
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Lei Duan
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Huiying Li
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Man Li
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Yuerui Li
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Lina Han
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
| | - Hunan Xiao
- Geriatric Cardiology Department of The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital , Beijing, China
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Rao T, Tan Z, Peng J, Guo Y, Chen Y, Zhou H, Ouyang D. The pharmacogenetics of natural products: A pharmacokinetic and pharmacodynamic perspective. Pharmacol Res 2019; 146:104283. [PMID: 31129178 DOI: 10.1016/j.phrs.2019.104283] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/17/2019] [Accepted: 05/21/2019] [Indexed: 11/19/2022]
Abstract
Natural products have represented attractive alternatives for disease prevention and treatment over the course of human history and have contributed to the development of modern drugs. These natural products possess beneficial efficacies as well as adverse efffects, which vary largely among individuals because of genetic variations in their pharmacokinetics and pharmacodynamics. As with other synthetic chemical drugs, the dosing of natural products can be optimized to improve efficacy and reduce toxicity according to the pharmacogenetic properties. With the emergence and development of pharmacogenomics, it is possible to discover and identify the targets/mechanisms of pharmacological effects and therapeutic responses of natural products effectively and efficiently on the whole genome level. This review covers the effects of genetic variations in drug metabolizing enzymes, drug transporters, and direct and indirect interactions with the pharmacological targets/pathways on the individual response to natural products, and provides suggestions on dosing regimen adjustments of natural products based on their pharmacokinetic and pharmacogenetic paratmeters. Finally, we provide our viewpoints on the importance and necessity of pharmacogenetic and pharmacogenomic research of natural products in natural medicine's rational development and clinical application of precision medicine.
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Affiliation(s)
- Tai Rao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China
| | - Zhirong Tan
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China
| | - Jingbo Peng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China
| | - Ying Guo
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China
| | - Yao Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China
| | - Honghao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China
| | - Dongsheng Ouyang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, PR China; Institute of Clinical Pharmacology, Central South University, Changsha, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, PR China; National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, PR China.
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Artymuk N, Zotova O, Gulyaeva L. Adenomyosis: genetics of estrogen metabolism. Horm Mol Biol Clin Investig 2019; 37:hmbci-2018-0069. [PMID: 30878995 DOI: 10.1515/hmbci-2018-0069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 02/08/2019] [Indexed: 01/22/2023]
Abstract
Background To analyze the allelic variants of genes of enzymes involved in estrogen metabolism: CYP1A1, CYP1A2, CYP19 and SULT1A1 using polymerase chain reaction-restriction fragment length polymorphism-restriction fragment length polymorphism (PCR-RFLP) analysis of women with histologically confirmed adenomyosis and women without proliferative diseases of pelvic organs was performed. We studied the following polymorphisms: CYP1A1 M1, T264 → C transition in the 3'-noncoding region; CYP1A2*1F, C734 → A transversion in CYP1A2 gene; C → T transition (Arg264Cys) in exon 7 of CYP19; SULT1A1*2, G638 → A transition (Arg213His) in the SULT1A1 gene. Materials and methods The study included 804 patients. Group I (experimental group) consisted of 268 women with adenomyosis. Inclusion criteria were: histological verification of adenomyosis, consent of patients to participate in the study. Group II (control group) - 536 women without proliferative diseases of the uterus. Inclusion criteria were: lack of proliferative processes of the uterus histologically confirmed by ultrasound examination, patient's consent to participate in the study. Results We found the significant association of C allele, T/C and C/C genotypes of the CYP1A1 gene (CYP1A1 M1 polymorphism), A allele, C/A and A/A genotypes of the CYP1A2 gene (CYP1A2*1F polymorphism) and the T allele, C/T and C/C genotypes of the CYP19 (Arg264Cys polymorphism) gene with the risk for adenomyosis. Conclusions Patients with adenomyosis had increased frequency of C allele, T/C and C/C genotypes of the CYP1A1 gene, A allele, C/A and A/A genotypes of the CYP1A2 gene and T allele and C/T and C/C genotypes of the CYP19 gene and, on the contrary, decreased frequency of the mutant allele and heterozygous and mutant homozygous genotype of the CYP1A2 gene compared to women without proliferative diseases of the uterus.
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Affiliation(s)
- Natalia Artymuk
- Department of Obstetrics and Gynecology, Kemerovo State Medical University, Kemerovo, Russia
| | - Olga Zotova
- L. Reshetova Kemerovo Regional Perinatal Center, Oktyabrsky Prospect, 22B, Kemerovo 650065, Russia, Phone: +8-923-486-92-24, Office Phone/Fax: +7(3842)392279
| | - Lyudmila Gulyaeva
- Medical Department, Novosibirsk State University, Federal Research Center "Basic and Translational Medicine", Novosibirsk, Russia
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Ma Y, Xue L, Chen X, Kang Y, Wang Y, Wang L. Population pharmacokinetics of theophylline in adult Chinese patients with asthma and chronic obstructive pulmonary disease. Int J Clin Pharm 2018; 40:1010-1018. [PMID: 29777329 DOI: 10.1007/s11096-018-0636-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 04/06/2018] [Indexed: 02/05/2023]
Abstract
Background Theophylline has a narrow therapeutic range and large interindividual variability in blood levels, so a thorough understanding of its pharmacokinetic characteristics is essential. Population pharmacokinetic (PPK) approaches could achieve it and many PPK studies of theophylline have been reported in infants. However, none was conducted in Chinese adults and none has explored the effect of CYP1A2 genotypes on the PPK characteristics of theophylline in adults. Objective To evaluate the PPK characteristics of theophylline and to assess the possible influence of covariates, including CYP1A2 genotypes, on theophylline clearance in Chinese adult patients. Setting The study is conducted at the department of respiration in Zhujiang Hospital, Guangzhou, China. Methods Theophylline concentrations were obtained from eligible patients and were measured by high performance liquid chromatography. The polymorphisms of - 3860G > A, - 163C > A, C5347T (CYP1A2*1B) and G-3113A were genotyped using a direct sequencing method. Then, CYP1A2 genotypes, age, fat-free mass (FFM) and other covariates were used to develop a PPK model by NONMEM software. Bootstrap analysis was used to asses the accuracy and prediction of the PPK model. Main outcome measure The concentration and clearance of theophylline. Results A total of 134 theophylline concentrations from 95 patients were obtained. The final model was as follows: CL/F(L/h) = 4.530 × (FFM/56.1)0.75 × 0.713CYP1A2*1B, the inter-individual variability in clearance/bioavailability (CL/F) was 44.0%, and the residual variability was 9.8%. The final model was proved to be reliable by bootstrap analysis. Conclusion Theophylline clearance was significantly associated with FFM and CYP1A2*1B genotypes in Chinese adult patients.
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Affiliation(s)
- Yanjiao Ma
- Department of Pharmacy, Zhujiang Hospital of Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Ling Xue
- Department of Clinical Pharmacology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, China
| | - Xin Chen
- Department of Respiration, Zhujiang Hospital of Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Yingbo Kang
- Department of Pharmacy, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Yong Wang
- Department of Pharmacy, Zhujiang Hospital of Southern Medical University, Guangzhou, 510282, Guangdong, China.
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Liqing Wang
- Department of Pharmacy, Zhujiang Hospital of Southern Medical University, Guangzhou, 510282, Guangdong, China.
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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Sutrisna E. The Impact of CYP1A2 and CYP2E1 Genes Polymorphism on Theophylline Response. J Clin Diagn Res 2016; 10:FE01-FE03. [PMID: 28050398 DOI: 10.7860/jcdr/2016/21067.8914] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/30/2016] [Indexed: 12/20/2022]
Abstract
Theophylline is a medicine with narrow therapeutic index. This implies that a small change in dosage would cause side effects. Theophylline is metabolized by CYP1A2 and CYP2E1. The aim of this review is to know the impact of CYP1A2 and CYP2E1 genes polymorphism on theophylline response. The review was done by searching literature in Pubmed and Science Direct databases with keywords 'polymorphism', 'pharmacogenetic', 'CYP1A2', 'CYP2E1' and 'theophylline'. There were 5 research articles from Pubmed and 65 articles (21 research articles, 23 review articles and 21 book chapters) from Science Direct. The exclusion criteria were - articles discussing about polymorphism but not CYP1A2 or CYP2E1, the ones with a mention of theophylline but not about its metabolism, articles on CYP1A2 and/or 2E1 polymorphism but not on the effect on theophylline. Thus, 33 articles were reviewed due to their suitability. The review discusses the influence of polymorphism of CYP1A2 and CYP2E1 genes on theophylline response.
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Affiliation(s)
- Em Sutrisna
- Senior Lecturer, Department of Pharmacology, Faculty of Medicine, Universitas Muhammadiyah Surakarta , Indonesia
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11
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Ma YJ, Jiang DQ, Meng JX, Li MX, Zhao HH, Wang Y, Wang LQ. Theophylline: a review of population pharmacokinetic analyses. J Clin Pharm Ther 2016; 41:594-601. [PMID: 27578172 DOI: 10.1111/jcpt.12435] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 07/29/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Y. J. Ma
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
| | - D. Q. Jiang
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
- Department of Biopharmaceutical; Yulin Normal University; Yulin China
| | - J. X. Meng
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
| | - M. X. Li
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
| | - H. H. Zhao
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
| | - Y. Wang
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
| | - L. Q. Wang
- Department of Pharmacy; Zhujiang Hospital of Southern Medical University; Guangzhou China
- Guangdong Provincial Key Laboratory of New Drug Screening; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
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Geng T, Zhang XY, Wang L, Wang H, Shi X, Kang L, Hou P, Jin T. Genetic polymorphism analysis of the drug-metabolizing enzyme CYP1A2 in a Uyghur Chinese population: a pilot study. Xenobiotica 2015; 46:542-7. [PMID: 26383175 DOI: 10.3109/00498254.2015.1089367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. CYP1A2 is a highly polymorphic gene and CYP1A2 enzyme results in broad inter-individual variability in response to certain pharmacotherapies, while little is known about the genetic variation of CYP1A2 in Uyghur Chinese population. The aim of the present study was to screen Uyghur volunteers for CYP1A2 genetic polymorphisms. 2. We used DNA sequencing to investigate promoter, exons, introns, and 3' UTR of the CYP1A2 gene in 96 unrelated healthy Uyghur individuals. We also used SIFT (Sorting Intolerant From Tolerant) and PolyPhen-2 (Polymorphism Phenotyping v2) to predict the protein function of the novel non-synonymous mutation in CYP1A2 coding regions. 3. We identified 20 different CYP1A2 polymorphisms in the Uyghur Chinese population, including two novel variants (119A > G and 2410G > A). Variant 119A > G was predicted to be probably damaging on protein function by PolyPhen-2, by contrast, 2410G > A was identified as benign. The allele frequencies of CYP1A2*1A, *1B, *1F, *1G, *1J, *1M, *4, and *9 were 23.4%, 53.1%, 3.7%, 2.6%, 2.6%, 13.5%, 0.5%, and 0.5%, respectively. The frequency of *1F, a putative high inducibility allele, was higher in our sample population compared with that in the Caucasian population (p < 0.05). The most common genotype combinations were *1A/*1B (46.9%) and *1B/*1M (27.1%). 4. Our results provide basic information on CYP1A2 polymorphisms in Uyghur individuals and suggest that the enzymatic activities of CYP1A2 may differ among the diverse ethnic populations of the world.
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Affiliation(s)
- Tingting Geng
- a National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University , Xi'an , Shaanxi , China .,b Department of Endocrinology , School of Medicine, the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China .,c Department of Obstetrics, Gynecology, and Reproductive Sciences , School of Medicine, Yale University , New Haven , CT , USA , and
| | - Xi Yang Zhang
- a National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University , Xi'an , Shaanxi , China
| | - Li Wang
- d Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University , Xianyang , Shaanxi , China
| | - Huijuan Wang
- a National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University , Xi'an , Shaanxi , China
| | - Xugang Shi
- a National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University , Xi'an , Shaanxi , China
| | - Longli Kang
- d Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University , Xianyang , Shaanxi , China
| | - Peng Hou
- a National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University , Xi'an , Shaanxi , China
| | - Tianbo Jin
- a National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University , Xi'an , Shaanxi , China .,d Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University , Xianyang , Shaanxi , China
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13
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Edem E, Kirdök AH, Kınay AO, Tekin Üİ, Taş S, Alpaslan E, Pabuccu MT, Akdeniz B. Does "smoker's paradox" exist in clopidogrel-treated Turkish patients with acute coronary syndrome. Platelets 2015; 27:240-4. [PMID: 26367336 DOI: 10.3109/09537104.2015.1083544] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Previously conducted studies revealed that smoking enhanced the efficacy of clopidogrel by increasing formation of the active metabolite (AM) from the prodrug through induction of the cytochrome CYP1A2. The expression of cytochrome enzymes depends on genotype and no data exists in literature conducted in Turkish patients comparing the clopidogrel responsiveness between active smokers and non-active smokers treated with clopidogrel. In this study, our aim was to investigate the clopidogrel responsiveness in clopidogrel-treated Turkish acute coronary syndrome (ACS) patients according to their smoking status. We retrospectively enrolled 258 patients who were hospitalized due to ACS. Clinical variables of the patients, especially smoking status were recorded. Clopidogrel resistance was evaluated by using adenosine diphosphate (ADP) induced platelet aggregometry. Clopidogrel resistance was detected as a change in maximal aggregation ≤20% from baseline. A total of 139 patients were active smokers while 12 were former smokers. 107 patients did not have a history of smoking. Ten of the smokers were hyporesponsive to clopidogrel, whereas 36 of non-smokers were hyporesponsive to clopidogrel (p < 0.001). Receiver-operating characteristic curve analysis demonstrated that Au-min value >612.5 predicted the clopidogrel resistance with a sensitivity of 60% (OR: 100.65, %95 CI = 19.996-506.615 p < 0.001). Results of this study demonstrated that ADP responses were lower in smokers receiving clopidogrel and aspirin than in non-smokers receiving the same drug regimen. This finding indicates that smoking was related to an enhanced clopidogrel responsiveness in Turkish patients hospitalized due to ACS, suggesting that "smoker's paradox" probably exists in Turkish ACS patients.
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Affiliation(s)
- Efe Edem
- a Department of Cardiology , Tınaztepe Hospital , Izmir , Turkey and
| | - Ali Hikmet Kirdök
- a Department of Cardiology , Tınaztepe Hospital , Izmir , Turkey and
| | - Ahmet Ozan Kınay
- a Department of Cardiology , Tınaztepe Hospital , Izmir , Turkey and
| | - Ümit İlker Tekin
- a Department of Cardiology , Tınaztepe Hospital , Izmir , Turkey and
| | - Sedat Taş
- b Department of Cardiology, Faculty of Medicine , Dokuz Eylül University , Izmir , Turkey
| | - Erkan Alpaslan
- b Department of Cardiology, Faculty of Medicine , Dokuz Eylül University , Izmir , Turkey
| | - Mustafa Türker Pabuccu
- b Department of Cardiology, Faculty of Medicine , Dokuz Eylül University , Izmir , Turkey
| | - Bahri Akdeniz
- b Department of Cardiology, Faculty of Medicine , Dokuz Eylül University , Izmir , Turkey
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Ito M, Katono Y, Oda A, Hirasawa N, Hiratsuka M. Functional characterization of 20 allelic variants of CYP1A2. Drug Metab Pharmacokinet 2015; 30:247-52. [PMID: 26022657 DOI: 10.1016/j.dmpk.2015.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 03/19/2015] [Accepted: 03/19/2015] [Indexed: 10/23/2022]
Abstract
Genetic variations in cytochrome P450 1A2 (CYP1A2) are associated with interindividual variability in the metabolism and efficacy of many medications. Twenty CYP1A2 variants harboring amino acid substitutions were analyzed for functional changes in enzymatic activity. Recombinant CYP1A2 variant proteins were heterologously expressed in COS-7 cells. Enzyme kinetic analyses were performed with two representative CYP1A2 substrates, phenacetin and 7-ethoxyresorufin. Among the 20 CYP1A2 allelic variants, CYP1A2*4, CYP1A2*6, CYP1A2*8, CYP1A2*15, CYP1A2*16, and CYP1A2*21 were inactive toward both substrates. CYP1A2*11 showed markedly reduced activity, but the changes in Km were different between the substrates. CYP1A2*14 and CYP1A2*20 exhibited increased activity compared to the wild-type enzyme, CYP1A2*1. This comprehensive in vitro assessment provided insight into the specific metabolic activities of CYP1A2 proteins encoded by variant alleles, which may to be valuable when interpreting the results of in vivo studies.
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Affiliation(s)
- Miyabi Ito
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yuki Katono
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Akifumi Oda
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Noriyasu Hirasawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Masahiro Hiratsuka
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
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15
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Szalai R, Magyari L, Matyas P, Duga B, Banfai Z, Szabo A, Kovesdi E, Melegh B. Genetic polymorphisms in promoter and intronic regions of CYP1A2 gene in Roma and Hungarian population samples. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 38:814-820. [PMID: 25461540 DOI: 10.1016/j.etap.2014.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 09/12/2014] [Accepted: 09/21/2014] [Indexed: 06/04/2023]
Abstract
The purpose of this study was to determine the interethnic differences of four CYP1A2 drug metabolizing enzyme variants. A total of 404 Roma and 396 Hungarian healthy subjects were genotyped for -163C>A, -729C>T, -2467delT and -3860G>A variants of CYP1A2 by RT-PCR and PCR-RFLP technique. The -3860A and -729T allele were not detectable in Roma samples, while in Hungarian samples were present with 2.02% and 0.25% prevalence, respectively. There was a 1.5-fold difference in presence of homozygous -163AA genotype between Hungarian and Roma samples (49.5% vs. 31.9%, p<0.001). The -163A allele frequency was 68.6% in Hungarians and 56.9% in Romas (p=0.025). The -2467delT allele frequency was 6.81% in Roma group and 5.81% in Hungarians. The most frequent allelic constellation was -3860G/-2467T/-729C/-163A in both populations. In conclusion, Hungarians have markedly elevated chance for rapid metabolism of CYP1A2 substrates, intensified procarcinogen activation and increased risk for cancers.
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Affiliation(s)
- Renata Szalai
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary; Szentagothai Research Centre, University of Pecs, Ifjusag 20, H-7624 Pecs, Hungary.
| | - Lili Magyari
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary; Szentagothai Research Centre, University of Pecs, Ifjusag 20, H-7624 Pecs, Hungary.
| | - Petra Matyas
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary.
| | - Balazs Duga
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary; Szentagothai Research Centre, University of Pecs, Ifjusag 20, H-7624 Pecs, Hungary.
| | - Zsolt Banfai
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary.
| | - Andras Szabo
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary.
| | - Erzsebet Kovesdi
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary; Szentagothai Research Centre, University of Pecs, Ifjusag 20, H-7624 Pecs, Hungary.
| | - Bela Melegh
- Department of Medical Genetics, Clinical Center, University of Pecs, Szigeti 12, H-7624 Pecs, Hungary; Szentagothai Research Centre, University of Pecs, Ifjusag 20, H-7624 Pecs, Hungary.
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Abstract
Chronic obstructive pulmonary disease (COPD) is a complex genetic disease that develops as a result of the interaction of multiple susceptibility genes and environmental factors. Major therapeutic approaches include smoking cessation, treatment with bronchodilators and corticosteroid therapy. The goal of understanding the genetic defects in patients with COPD will be not only to redefine the disease phenotypes based on the genetic information, but also to alternatively approach patients based on the understanding of COPD pathogenesis, which will lead to improved clinical outcomes. Although there is no single ideal phenotype for COPD pharmacogenetic studies, thus far, most pharmacogenetics studies have focused on the role of variants in the β2-adrenergic receptor gene on bronchodilator response. The inconclusive results yielded by these studies highlight many of the difficulties researchers face in assessing the influence of genetic variants and in translating this to clinically relevant outcomes.
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Affiliation(s)
- Nobuyuki Hizawa
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, Japan.
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Wang L, Hu Z, Deng X, Wang Y, Zhang Z, Cheng ZN. Association between common CYP1A2 polymorphisms and theophylline metabolism in non-smoking healthy volunteers. Basic Clin Pharmacol Toxicol 2012; 112:257-63. [PMID: 23167834 DOI: 10.1111/bcpt.12038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 11/07/2012] [Indexed: 11/30/2022]
Abstract
This study was designed to investigate the impact of cytochrome P450 (CYP) 1A2 polymorphisms on theophylline metabolism in a non-smoking healthy male Chinese population. Four polymorphisms CYP1A2 1C (G-3860A), G-3113A, CYP1A2 1F (C-163A) and CYP1A2 1B (C-5347T) were screened in 238 unrelated male volunteers. Then, a single oral 200-mg dose of theophylline was administered to 37 volunteers, who were selected from 238 volunteers based on the CYP1A2 genotype. CYP1A2 activities were evaluated by plasma 1,7-dimethylxanthine/caffeine ratios (17X/137X) after administration of 100-mg caffeine. The plasma concentrations of theophylline, 17X and 137X were determined by high-performance liquid chromatography. The activity of CYP1A2 was lower in volunteers with the -3113 AA genotype compared with those with the -3113 AG genotype (0.35 ± 0.04 versus 0.48 ± 0.07, p = 0.016) or the -3113 GG genotype (0.35 ± 0.04 versus 0.58 ± 0.22, p = 0.037). CYP1A2 1F polymorphisms were associated with increased CYP1A2 activity in volunteers with -3860G/-3113G/5347C homozygosity (0.66 ± 0.24 versus 0.46 ± 0.05, p = 0.034). However, theophylline metabolism showed no difference among volunteers carrying different haplotype pairs. CYP1A2 genetic polymorphisms influenced CYP1A2 enzyme activity as measured by caffeine, but CYP1A2 gene polymorphisms appeared to have limited influence on theophylline metabolism in our study.
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Affiliation(s)
- Liqing Wang
- Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Abstract
A genetic contribution to develop chronic obstructive pulmonary disease (COPD) is well established. However, the specific genes responsible for enhanced risk or host differences in susceptibility to smoke exposure remain poorly understood. The goal of this review is to provide a comprehensive literature overview on the genetics of COPD, highlight the most promising findings during the last few years, and ultimately provide an updated COPD gene list. Candidate gene studies on COPD and related phenotypes indexed in PubMed before January 5, 2012 are tabulated. An exhaustive list of publications for any given gene was looked for. This well-documented COPD candidate-gene list is expected to serve many purposes for future replication studies and meta-analyses as well as for reanalyzing collected genomic data in the field. In addition, this review summarizes recent genetic loci identified by genome-wide association studies on COPD, lung function, and related complications. Assembling resources, integrative genomic approaches, and large sample sizes of well-phenotyped subjects is part of the path forward to elucidate the genetic basis of this debilitating disease.
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Affiliation(s)
- Yohan Bossé
- Centre de recherche Institut universitaire de cardiologie et de pneumologie de Québec, Quebec, Canada.
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Kim D, Lee YJ, Ryu HY, Lee JH, Kim HK, Kim E, Moon JD, Chang DD, Yoon HS. Genetic polymorphisms in metabolism of 2-amino-1-methyl-6-phenylimidazo[4,5-b] pyridine. J Appl Toxicol 2011; 33:63-70. [PMID: 22131055 DOI: 10.1002/jat.1712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 05/25/2011] [Indexed: 11/09/2022]
Abstract
Heterocyclic amines (HCAs) are naturally produced during common cooking processes for meats and fish. HCAs are metabolized by various enzymes, including cytochromes P450, N-acetyl transferases, and sulfotransferases, and their bioactivated metabolites are considered to bind to DNA or protein to show carcinogenic effects. More than 20 HCAs have been identified, of which 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) is classified as 'reasonably anticipated to be a human carcinogen' to develop cancers in breast, colon and prostate. The purpose of this study was to evaluate human exposure levels of PhIP and to understand the role of genetic polymorphisms of enzymes on PhIP metabolism. Urine samples were collected from subjects (n = 100) before 3-day meat-restricted diets. Subjects consumed grilled chicken, and their blood and urine were collected before and after the administration of the chickens to investigate genetic polymorphisms and PhIP levels. The mean PhIP levels were 4.22 ± 0.12, 0.61 ± 0.19 and 22.64 ± 1.00 pg ml(-1) in urine under normal conditions and before and after chicken administration, respectively. Among 21 Single-nucleotide polymorphisms (SNP) of CYP1A1, CYP1A2, NATs and UGTs investigated in this study, genotypic groups of CYP1A1/T6235C (MSP I) and CYP1A2/-2467delT showed significant differences in PhIP excretion (P < 0.05). These results suggest that genetic polymorphisms might affect PhIP metabolism, which could improve understanding of populations subject to PhIP-derived health risk.
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Affiliation(s)
- Dojung Kim
- Korea Food and Drug Administration, 643 Yeonje-ri, Gangoe-myeon, Cheongwon-gun, Chungbuk, 363-951, Korea
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