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Nakhonsri V, John S, Panumasmontol H, Jantorn M, Chanthot P, Hanpramukkun N, Meelarp S, Sukasem C, Tongsima S, Hasatsri S, Prawang A, Thaingtamtanha T, Vanwong N, Atasilp C, Chamnanphon M, Jinda P, Satapornpong P. The Diversity of CYP2C19 Polymorphisms in the Thai Population: Implications for Precision Medicine. Appl Clin Genet 2024; 17:95-105. [PMID: 38975048 PMCID: PMC11227332 DOI: 10.2147/tacg.s463965] [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] [Received: 03/24/2024] [Accepted: 06/20/2024] [Indexed: 07/09/2024] Open
Abstract
Introduction CYP2C19 plays a major role in the metabolism of various drugs. The most common genetic variants were the CYP2C19*2 and *3 alleles (rs4244285 and rs4986893, non-functional variants). In previous studies, we found that genetic polymorphisms in CYP2C19 variants influenced the active metabolites of clopidogrel and caused major adverse cardiovascular and cerebrovascular effects. However, the distribution of CYP2C19 varies among ethnic groups and according to adverse drug reactions. This study aimed to investigate the frequency of CYP2C19 genetic polymorphisms in the Thai population and analyze the differences in the frequency of CYP2C19 genetic polymorphisms between Thai and other populations. Methods This study enrolled 211 unrelated healthy Thai individuals in total. We performed a real-time polymerase chain reaction to genotype CYP2C19*2 (681G > A) and CYP2C19*3 (636G > A). Results In the Thai population, the CYP2C19*1 allele was the most prevalent at 70.14%, while the CYP2C19*2 and *3 alleles were found at frequencies of 25.36% and 4.50%, respectively. Conversely, the CYP2C19*3 allele was not detected in Caucasian, Hispanic, African, Italian, Macedonian, Tanzanian, or North Indian populations. The phenotypic profile of this gene revealed that the frequency of intermediate metabolizers (IMs) is nearly equal to that of extensive metabolizers (EMs), at 42.65% and 48.82% respectively, with genotypes *1/*2 (36.02%) and *1/*3 (6.63%). Likewise, poor metabolizers (PMs) with genotypes *2/*2 (6.16%), *2/*3 (2.37%), and *3/*3 (<1%) are more prevalent in our population as well. Conclusion The distribution of CYP2C19 genotype and phenotype influenced by non-functional alleles has potential as a pharmacogenomics biomarker for precision medicine and is dependent on an ethnic-specific genetic variation database.
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Affiliation(s)
- Vorthunju Nakhonsri
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Shobana John
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand
| | - Hathaichanok Panumasmontol
- Division of General Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
- Excellence Pharmacogenomics and Precision Medicine Centre, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | - Manassanan Jantorn
- Division of General Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
- Excellence Pharmacogenomics and Precision Medicine Centre, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | - Pongpipat Chanthot
- Division of General Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
- Excellence Pharmacogenomics and Precision Medicine Centre, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | - Nuntachai Hanpramukkun
- Division of Pharmaceutical Technology, Department of Industrial Pharmacy, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | | | - Chonlaphat Sukasem
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand
| | - Sissades Tongsima
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Sukhontha Hasatsri
- Division of General Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | - Abhisit Prawang
- Division of Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | - Thanawat Thaingtamtanha
- Department of Chemistry and Biology, University of Siegen, Siegen, Germany
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Natchaya Vanwong
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
- Department of Clinical Chemistry, SYstems Neuroscience of Autism & PSychiatric Disorders (SYNAPS) Research Unit, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Chalirmporn Atasilp
- Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
| | - Monpat Chamnanphon
- Department of Pathology, Faculty of Medicine, Srinakharinwirot University, Nakornnayok, Thailand
| | - Pimonpan Jinda
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand
| | - Patompong Satapornpong
- Division of General Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
- Excellence Pharmacogenomics and Precision Medicine Centre, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
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Gairolla J, Ahluwalia J, Khullar M, Kler R, Kishore K, Medhi B, Modi M, Kumar M, Kumar A, Khurana D. Clopidogrel response in ischemic stroke patients: Is polymorphism or gender more important? Results of the CRISP study. J Clin Neurosci 2020; 76:81-86. [PMID: 32317191 DOI: 10.1016/j.jocn.2020.04.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/05/2020] [Indexed: 11/16/2022]
Abstract
Clopidogrel (CLP) is a second generation thienopyridine drug commonly used in secondary prevention of ischemic stroke (IS). Its antiplatelet response maybe variable due to genetic and non-genetic factors. Adipokines may affect platelet aggregation through ADP mediated platelet signalling. However, the combined effect of CYP genetic variants and adipokines on antiplatelet response of clopidogrel is unclear. Patients of IS/Transient ischemic attack (TIAs) within 3 months were prospectively screened following clopidogrel treatment. Major exclusions were cardioembolic and non atherosclerotic strokes. Antiplatelet effect of clopidogrel along with adipokine (Leptin and adiponectin) levels and genotyping of CYP, P2Y12 gene were investigated. Rare genetic variants were confirmed by DNA sequencing. 204 patients with ischemic stroke/TIAs were screened and 163 were recruited. 85 (52.1%) patients were poor responders to clopidogrel. Antiplatelet response to clopidogrel was weaker in females [Median 8.0 (IQR: 3.0-14.0)] compared to males [Median 5.0 (IQR: 2.0-10.0)]. In female subgroup analysis, association was found among high leptin levels and PPI (+) usage in poor responders. None of the genetic variants (CYP2C19*2,*3,*4*, CYP2C9*3, CYP2B6 and P2Y12) were found to influence the antiplatelet effects (p > 0.05). On multivariable logistic regression, a poor clopidogrel response was associated with female gender (Adjusted OR 2.55, 95% CI: 1.05-6.18) and PPI usage (Adjusted OR 2.42, 95% CI: 1.09-5.34). Despite a high prevalence of clopidogrel resistance in the North Indian stroke patients, female gender rather than genetic polymorphisms of CYP and P2Y12 genes may influence its antiplatelet effect. Further research may ascertain the role of gender on clopidogrel response.
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Affiliation(s)
- Jitender Gairolla
- Department of Community Medicine and School of Public Health, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Jasmina Ahluwalia
- Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Madhu Khullar
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Rupinder Kler
- Molecular Genetics Lab, R&D Centre, Dayanand Medical College & Hospital, Ludhiana 141001, Punjab, India
| | - Kamal Kishore
- Department of Biostatistics, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Bikash Medhi
- Department of Pharmacology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Manish Modi
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Mukesh Kumar
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Ashok Kumar
- National Institute of Nursing Education, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Dheeraj Khurana
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India.
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Dorji PW, Wangchuk S, Boonprasert K, Tarasuk M, Na-Bangchang K. Pharmacogenetic relevant polymorphisms of CYP2C9, CYP2C19, CYP2D6, and CYP3A5 in Bhutanese population. Drug Metab Pers Ther 2019; 34:/j/dmdi.2019.34.issue-4/dmpt-2019-0020/dmpt-2019-0020.xml. [PMID: 32004143 DOI: 10.1515/dmpt-2019-0020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
Background Marked differences among genotype frequencies (Caucasians, Asians, and Africans) have been observed in cytochrome P450 (CYP) genes. Data on the frequency of pharmacogenetic relevant polymorphisms in Bhutanese population is absent. This study aimed to investigate the frequencies of pharmacogenetic relevant polymorphisms of CYP2C9 (*2 and *3), CYP2C19 (*2 and *3), CYP2D6 (*10), and CYP3A5 (*3) in Bhutanese population. Methods Genotyping was performed in 443 DNA samples using polymerase chain reaction-restriction fragment length polymorphism. Results For CYP2C9, allele frequencies of *2 and *3 variants were 0.339% and 0%, respectively. For CYP2C19, frequencies of *2 and *3 variants were 30.135% and 15.689%, respectively. Allele frequencies of CYP2D6*10 and CYP3A5*3 were 21.332% and 77.314%, respectively. Allele frequencies of CYP2C9*2 are similar to most Asians while CYP2C9*3 was absent. CYP2C19*2 showed a close resemblance to Japanese and Burmese, while CYP2C19*3 is near to Japanese and Korean. CYP2D6*10 is noticeably lower than other Asians. CYP3A5*3 is similar to East Asians (Chinese, Japanese, and Korean). Conclusions The Bhutanese population is polymorphic for these CYP genes, except for CYP2C9*3. Similar to other populations, genetic testing for these genes may, therefore, be helpful to obtain the benefit from pharmacological treatments and prevent adverse drug reactions.
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Affiliation(s)
- Palden Wangyel Dorji
- Graduate Studies, Chulabhorn International College of Medicine, Thammasat University, Thailand; Faculty of Nursing and Public Health, Khesar Gyalpo University of Medical Sciences of Bhutan, Thimphu, Bhutan
| | - Sonam Wangchuk
- Royal Centre of Disease Control, Ministry of Health, Thimphu, Bhutan
| | - Kanyarat Boonprasert
- Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Thailand
| | - Mayuri Tarasuk
- Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Thailand
| | - Kesara Na-Bangchang
- Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Thailand
- Drug Discovery and Development Center, Office of Advanced Science and Technology, Thammasat University, Thailand
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Association between a microRNA binding site polymorphism in SLCO1A2 and the risk of delayed methotrexate elimination in Chinese children with acute lymphoblastic leukemia. Leuk Res 2018; 65:61-66. [PMID: 29306656 DOI: 10.1016/j.leukres.2018.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/27/2017] [Accepted: 01/01/2018] [Indexed: 01/09/2023]
Abstract
Organic anion-transporting polypeptide 1A2 (OATP1A2) is involved in the cellular uptake of methotrexate (MTX). Genetic variation in solute carrier organic anion transporter family member 1A2 (SLCO1A2, the coding gene of OATP1A2) has important implications for the elimination of MTX. We investigated the association between a microRNA (miRNA) binding site polymorphism (rs4149009 G > A) in the 3'-untranslated region (3'-UTR) of SLCO1A2 with the serum MTX concentrations in Chinese children with acute lymphoblastic leukemia (ALL). Genotyping for SLCO1A2 rs4149009 G > A in 141 children with ALL was performed using the Sequenom MassARRAY system. Serum MTX concentrations were determined by fluorescence polarization immunoassay. The percentages of MTX level ≥1 μmol/L at 42 h were compared among the AA, GA, and GG genotypes. The minor allele frequency observed in this study (33.0%) was significantly lower than that in the African samples reported in the 1000 Genomes Project (57.4%, P = 0.00). The incidence rate of delayed MTX elimination was significantly higher in patients with the GG genotype (23.1%) compared with the AA genotype (0.0%, P = 0.03). Bioinformatics tools predicted that the rs4149009 A allele would disrupt the putative binding sites of hsa-miR-324-3p and hsa-miR-1913. These results indicate that the rs4149009 G > A polymorphism might affect MTX pharmacokinetics by interfering with the function of miRNAs.
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Shah T, Solanke S, Joshi K. HLA-DRB1 class II alleles in Indian asthmatic population: A candidate gene-environment interaction. Meta Gene 2017. [DOI: 10.1016/j.mgene.2017.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Barlas İÖ, Sezgin O, Dandara C, Türköz G, Yengel E, Cindi Z, Ankaralı H, Şardaş S. Harnessing Knowledge on Very Important Pharmacogenes CYP2C9 and CYP2C19 Variation for Precision Medicine in Resource-Limited Global Conflict Zones. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2017; 20:604-609. [PMID: 27726640 DOI: 10.1089/omi.2016.0133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Pharmacogenomics harnesses the utility of a patient's genome (n = 1) in decisions on which therapeutic drugs and in what amounts should be administered. Often, patients with shared ancestry present with comparable genetic profiles that predict drug response. However, populations are not static, thus, often, population mobility through migration, especially enmasse as is seen for refugees, changes the pharmacogenetic profiles of resultant populations and therefore observed responses to commonly used therapeutic drugs. For example, in the aftermath of the Syrian civil war since 2011, millions have fled their homes to neighboring countries in the Middle East. The growing permanence of refugees and mass migrations is a call to shift our focus in the life sciences community from old models of pharmaceutical innovation. These seismic social changes demand faster decisions for "population-to-population bridging," whereby novel drugs developed in or for particular regions/countries can meet with rational regulatory decisions/approval in world regions impacted by migrant/refugee populations whose profiles are dynamic, such as in the Eastern Mediterranean region at present. Thus, it is important to characterize and report on the prevalence of pharmacogenes that affect commonly used medications and predict if population changes may call for attention to particular differences that may impact health of patients. Thus, we report here on four single-nucleotide polymorphism (SNP) variations in CYP2C9 and CYP2C19 genes among Mersin-Turkish healthy volunteers in the Mersin Province in the Eastern Mediterranean region that is currently hosting a vast number of migrant populations from Syria. Both CYP2C9 and CYP2C19 are very important pharmacogene molecular targets. We compare and report here on the observed SNP genetic variation in our sample with data on 12 world populations from dbSNP and discuss the feasibility of forecasting the pharmacokinetics of drugs utilized by migrant communities in Mersin and the Eastern Mediterranean region. This study can serve as a catalyst to invest in research in Syrian populations currently living in the Eastern Mediterranean. The findings have salience for rapid and rational regulatory decision-making for worldwide precision medicine and, specifically, "pharmacogenovigilance-guided bridging of pharmacokinetics" across world populations in the current era of planetary scale migration.
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Affiliation(s)
- İbrahim Ömer Barlas
- 1 Department of Medical Biology and Genetics, Faculty of Medicine, Mersin University , Mersin, Turkey
| | - Orhan Sezgin
- 2 Department of Gastroenterology, Medical Faculty of Mersin University , Mersin, Turkey
| | - Collet Dandara
- 3 Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, Institute for infectious Disease and Molecular Medicine, University of Cape Town , Cape Town, South Africa
| | - Gözde Türköz
- 1 Department of Medical Biology and Genetics, Faculty of Medicine, Mersin University , Mersin, Turkey
| | - Emre Yengel
- 2 Department of Gastroenterology, Medical Faculty of Mersin University , Mersin, Turkey
| | - Zinhle Cindi
- 3 Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, Institute for infectious Disease and Molecular Medicine, University of Cape Town , Cape Town, South Africa
| | - Handan Ankaralı
- 4 Department of Biostatistics and Medical Informatics, Düzce University 81620, Düzce, Turkey
| | - Semra Şardaş
- 5 Pharmacogenetics and Drug Safety Unit, Department of Toxicology, Faculty of Pharmacy, Marmara University , Istanbul, Turkey
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Cytochrome allelic variants and clopidogrel metabolism in cardiovascular diseases therapy. Mol Biol Rep 2016; 43:473-84. [DOI: 10.1007/s11033-016-3983-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 04/04/2016] [Indexed: 01/18/2023]
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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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Chawla PK, Nanday SR, Dherai AJ, Soman R, Lokhande RV, Naik PR, Ashavaid TF. Correlation of CYP2C19 genotype with plasma voriconazole levels: a preliminary retrospective study in Indians. Int J Clin Pharm 2015; 37:925-30. [PMID: 26024717 DOI: 10.1007/s11096-015-0143-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 05/20/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Voriconazole is an antifungal drug essentially metabolized by cytochrome P450 (CYP2C19) isozyme. Plasma voriconazole levels exhibit wide inter-individual variability due to several factors like age, weight, food or drug interactions or CYP2C19 polymorphisms. OBJECTIVE In the present study, we assessed the correlation of voriconazole levels with CYP2C19 genotype in patients on voriconazole therapy. SETTING Biochemistry Department of a 480 inpatient bed tertiary care hospital in India. METHODS Plasma voriconazole estimation was done in seventy-two patients on standard weight based voriconazole therapy by High Performance Liquid Chromatography (HPLC) while genotype assessment for the CYP2C19*2 and *3 was done by PCR-RFLP and *17 by ARMS-PCR. Statistical analysis and genotype-phenotype correlation was done by comparing the drug levels with the CYP2C19 genotype. MAIN OUTCOME MEASURE CYP2C19 polymorphisms influence voriconazole metabolism. RESULTS A wide variability is seen in plasma levels with only 51% attaining therapeutic levels. The allele frequency of *2, *3 and *17 variant were found to be 33.3, 0.7 and 18% respectively. The drug levels in carriers of *2 allele (poor metabolizers) was twofold higher than that in extensive metabolizers. However, the influence of *2 allele was compromised in presence of *17 allele and patients had low voriconazole levels. In addition to the genotype, co-medication and clinical condition remarkably influenced voriconazole concentration. CONCLUSION Plasma voriconazole levels are influenced by CYP2C19 variants, drug interactions and clinical condition of the patient. Genotype assessment at initiation of therapy followed by drug monitoring would help optimizing therapeutic efficacy and minimizing toxicity.
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Affiliation(s)
- Prerna K Chawla
- Research Laboratories, P.D. Hinduja Hospital and Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India
| | - Shweta R Nanday
- Department of Laboratory Medicine, P.D. Hinduja Hospital & Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India
| | - Alpa J Dherai
- Research Laboratories, P.D. Hinduja Hospital and Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India.,Department of Laboratory Medicine, P.D. Hinduja Hospital & Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India
| | - Rajeev Soman
- Department of Internal Medicine, P.D. Hinduja Hospital & Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India
| | - Rohan V Lokhande
- Department of Laboratory Medicine, P.D. Hinduja Hospital & Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India
| | - Prasad R Naik
- Department of Laboratory Medicine, P.D. Hinduja Hospital & Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India
| | - Tester F Ashavaid
- Research Laboratories, P.D. Hinduja Hospital and Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India. .,Department of Laboratory Medicine, P.D. Hinduja Hospital & Medical Research Centre, V.S. Marg, Mahim, Mumbai, 400016, India.
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Gu S, Sun Y, Han R, Wang L, Wang D, Wang J, Li X. Association between genetic polymorphisms of cytochrome P450 2C19 and the risk of cerebral ischemic stroke in Chinese. BMC MEDICAL GENETICS 2014; 15:83. [PMID: 25030528 PMCID: PMC4123826 DOI: 10.1186/1471-2350-15-83] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 07/09/2014] [Indexed: 02/05/2023]
Abstract
Background Cytochrome P450 (CYP) 2C19 is a very important drug metabolizing enzyme. Although the single nucleotide polymorphisms (SNPs) of CYP2C19 G681A and G636A have been suggested that they may increase the incidence of cardiovascular events, the relationship between SNPs in CYP2C19 and cerebral ischemic stroke (CIS) are unclear. The aim of this study was to investigate the correlation between the distribution of G681A and G636A polymorphisms in CYP2C19 gene and the risk of CIS in Chinese. Methods The peripheral blood DNA was extracted from 299 patients with CIS and 295 healthy controls. The genotyping was conducted using the polymerase chain reaction-restriction fragment length polymorphism. The sampled sequencing was applied to verify the correctness of genotyping results. Both the genotype and allele distributions were compared in patients with CIS and healthy controls. Results The frequencies of CYP2C19 681AA (11.7% vs. 2.7%; P = 0.000), 636AA (4.0% vs. 0.7%; P = 0.007), 636AG (7.0% vs. 2.2%; P = 0.038) genotype, CYP2C19 681A (30.9% vs. 20.8%; P = 0.000) and 636A (13.0% vs. 5.8%; P = 0.000) allele in the CIS group are significantly higher than those in the controls. The frequencies of CYP2C19 681AA (16.7% vs. 8.6%; P = 0.036), CYP2C19 636AA (7.0% vs. 2.2%; P = 0.038) genotype, CYP2C19 681A (36.4% vs. 27.6%; P = 0.023) and CYP2C19 636A (17.5% vs.10.3%; P = 0.010) allele in the recurrent stroke group are significantly higher than those in the first onset group. Multivariate logistic regression analysis of risk factors for cerebral ischemic stroke and recurrent stroke respectively suggests that the CYP2C19 681AA genotype may be an independent risk factor for CIS (OR = 6.179, 95% CI: 2.285 ~ 16.708; P = 0.000) and recurrent stroke (OR = 2.305, 95% CI: 1.121 ~ 4.743; P = 0.023). Conclusions The AA genotype and A allele of CYP2C19 G681A may be related to the occurrence and recurrence of cerebral ischemic stroke.
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Affiliation(s)
| | | | | | | | | | | | - Xin Li
- Department of Neurology, the Second Hospital of Tianjin Medical University, Tianjin 300211, China.
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Gulati S, Yadav A, Kumar N, Kumar G, Aggarwal N, Gupta R. Frequency distribution of high risk alleles of CYP2C19, CYP2E1, CYP3A4 genes in Haryana population. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:1186-1193. [PMID: 24814262 DOI: 10.1016/j.etap.2014.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 03/12/2014] [Accepted: 03/16/2014] [Indexed: 06/03/2023]
Abstract
The genotype of an individual can significantly influence the disposition of a chemical, and determine their susceptibility to its toxicity. Many enzymes involved in either activation or detoxification of chemical carcinogen metabolism are polymorphically expressed, with the alleles presenting different enzymatic activities and some of them having been associated with susceptibility to cancer. Cytochrome P450 (P450 or CYP) constitutes the most important phase I enzyme group responsible for the metabolism of endogenous and exogenous (xenobiotics) substances. The present study was aimed to analyze the frequencies of commonly known polymorphisms of human xenobiotic metabolizing genes (XMG) in the Haryana State population of North India. The study was conducted in 308 healthy Haryana volunteers. DNA was extracted from leucocytes and the genetic polymorphisms in CYP2C19*2, CYP2C19*3, CYP2E1*5B and CYP3A4*1B were determined by digesting the PCR Product with restriction enzymes BamHI, SmaI, PstI and PstI respectively. The genotype frequencies of CYP2C19*2, CYP2C19*3, CYP2E1*5B, and CYP3A4*1B were found to be 22.0%, 0.0%, 2.11% and 2.0% respectively. The North Indian population which is known to be Caucasoid Aryans is ethnically different from South Indians known as Caucasoid Dravidians but no significant difference in genetic polymorphism was found.
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Affiliation(s)
- Sachin Gulati
- Department of Biotechnology, Kurukshetra University, Kurukshetra (Haryana) 136119, India.
| | - Anita Yadav
- Department of Biotechnology, Kurukshetra University, Kurukshetra (Haryana) 136119, India.
| | - Neeraj Kumar
- Department of Biotechnology, Kurukshetra University, Kurukshetra (Haryana) 136119, India.
| | - Gaurav Kumar
- Department of Biochemistry, Kurukshetra University, Kurukshetra (Haryana) 136119, India.
| | - Neeraj Aggarwal
- Department of Microbiology, Kurukshetra University, Kurukshetra (Haryana) 136119, India.
| | - Ranjan Gupta
- Department of Biochemistry, Kurukshetra University, Kurukshetra (Haryana) 136119, India.
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Kumar A, Prasad M, Kathuria P. Sitting occupations are an independent risk factor for Ischemic stroke in North Indian population. Int J Neurosci 2014; 124:748-54. [DOI: 10.3109/00207454.2013.879130] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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13
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Sipeky C, Weber A, Szabo M, Melegh BI, Janicsek I, Tarlos G, Szabo I, Sumegi K, Melegh B. High prevalence of CYP2C19*2 allele in Roma samples: study on Roma and Hungarian population samples with review of the literature. Mol Biol Rep 2013; 40:4727-35. [PMID: 23645039 DOI: 10.1007/s11033-013-2569-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 04/29/2013] [Indexed: 12/22/2022]
Abstract
The purpose of our study was to characterise the CYP2C19*2 and CYP2C19*3 alleles in healthy Roma and Hungarian populations. DNA of 500 Roma and 370 Hungarian subjects were genotyped for CYP2C19*2 (G681A, rs4244285) and CYP2C19*3 (G636A, rs4986893) by PCR-RFLP assay and direct sequencing. Significant differences were found comparing the Roma and Hungarian populations in CYP2C19 681 GG (63.6 vs. 75.9%), GA (31.8 vs. 23.0%), AA (4.6 vs. 1.1%), GA+AA (36.4 vs. 24.1%) and A allele frequencies (0.205 vs. 0.125) (p<0.004). Striking differences were found between Roma and Hungarian samples in CYP2C19*1 (79.5 vs. 87.4%) and CYP2C19*2 (20.5 vs. 12.6%) alleles, respectively (p<0.001). None of the subjects was found to carry the CYP2C19*3 allele. Frequencies of the intermedier metabolizer phenotype defined by the *1/*2 genotype (0.318 vs. 0.230, p<0.005) and poor metabolizer predicted by the *2/*2 genotype (0.046 vs. 0.011, p<0.005) was significantly higher in Roma than in Hungarians, respectively. Genotype distribution of the Roma population was similar to those of the population of North India, however, a major difference was found in the frequency of the CYP2C19*2 allele, which is likely a result of admixture with European lineages. In conclusion, the frequencies of the CYP2C19 alleles, genotypes and corresponding extensive, intermediate and poor metabolizer phenotypes studied here in the Hungarian population are similar to those of other European Caucasian populations, but display clear differences when compared to the Roma population.
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Affiliation(s)
- Csilla Sipeky
- Department of Medical Genetics, University of Pecs, Szigeti 12, Pecs, 7624, Hungary.
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Zuo LJ, Guo T, Xia DY, Jia LH. Allele and Genotype Frequencies of CYP3A4, CYP2C19, and CYP2D6 in Han, Uighur, Hui, and Mongolian Chinese Populations. Genet Test Mol Biomarkers 2012; 16:102-8. [PMID: 22224559 DOI: 10.1089/gtmb.2011.0084] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Liang Jin Zuo
- Department of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
- Departmant of Pharmacy, Shenyang Northern Hospital, Shenyang, China
| | - Tao Guo
- Departmant of Pharmacy, Shenyang Northern Hospital, Shenyang, China
| | - Dong Ya Xia
- Departmant of Pharmacy, Shenyang Northern Hospital, Shenyang, China
| | - Li Hui Jia
- Departmant of Pharmacy, Shenyang Northern Hospital, Shenyang, China
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Yin SJ, Ni YB, Wang SM, Wang X, Lou YQ, Zhang GL. Differences in genotype and allele frequency distributions of polymorphic drug metabolizing enzymes CYP2C19 and CYP2D6 in mainland Chinese Mongolian, Hui and Han populations. J Clin Pharm Ther 2011; 37:364-9. [DOI: 10.1111/j.1365-2710.2011.01298.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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16
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Genetic polymorphism of CYP2C19 in a Jordanian population: influence of allele frequencies of CYP2C19*1 and CYP2C19*2 on the pharmacokinetic profile of lansoprazole. Mol Biol Rep 2011; 39:4195-200. [DOI: 10.1007/s11033-011-1204-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 07/11/2011] [Indexed: 10/18/2022]
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Ghodke Y, Joshi K, Patwardhan B. Traditional Medicine to Modern Pharmacogenomics: Ayurveda Prakriti Type and CYP2C19 Gene Polymorphism Associated with the Metabolic Variability. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:249528. [PMID: 20015960 PMCID: PMC3135904 DOI: 10.1093/ecam/nep206] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 11/10/2009] [Indexed: 12/25/2022]
Abstract
Traditional Indian medicine—Ayurveda—classifies the human population into three major constituents or Prakriti known as Vata, Pitta and Kapha types. Earlier, we have demonstrated a proof of concept to support genetic basis for Prakriti. The descriptions in Ayurveda indicate that individuals with Pitta Prakriti are fast metabolizers while those of Kapha Prakriti are slow metabolizers. We hypothesized that different Prakriti may have different drug metabolism rates associated with drug metabolizing enzyme (DME) polymorphism. We did CYP2C19 (Phase I DME) genotyping in 132 unrelated healthy subjects of either sex by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. We observed significant association between CYP2C19 genotype and major classes of Prakriti types. The extensive metabolizer (EM) genotype (∗1/∗1, ∗1/∗2, ∗1/∗3) was found to be predominant in Pitta Prakriti (91%). Genotype (∗1/∗3) specific for EM group was present only in Pitta Prakriti. Poor metabolizer (PM) genotype (∗2/∗2, ∗2/∗3, ∗3/∗3) was highest (31%) in Kapha Prakriti when compared with Vata (12%) and Pitta Prakriti (9%). Genotype (∗2/∗3) which is typical for PM group was significant in Kapha Prakriti (odds ratio = 3.5, P = .008). We observed interesting correlations between CYP2C19 genotypes and Prakriti with fast and slow metabolism being one of the major distinguishing and differentiating characteristics. These observations are likely to have significant impact on phenotype-genotype correlation, drug discovery, pharmacogenomics and personalized medicine.
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Affiliation(s)
- Yogita Ghodke
- Bioprospecting Laboratory, Interdisciplinary School of Health Sciences, University of Pune, India
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Frequencies of genotypes and alleles of the functional SNPs in CYP2C19 and CYP2E1 in mainland Chinese Kazakh, Uygur and Han populations. J Hum Genet 2009; 54:372-5. [DOI: 10.1038/jhg.2009.41] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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