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Combined influence of ABCB1 genetic polymorphism and DNA methylation on aspirin resistance in Chinese ischemic stroke patients. Acta Neurol Belg 2021; 122:1057-1064. [PMID: 34089489 DOI: 10.1007/s13760-021-01714-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
Genetic variants of ABCB1 may affect intestinal absorption of aspirin (ASA). However, it is unclear whether ABCB1 polymorphisms and DNA methylation are associated with ASA efficacy for ischemic stroke. Our aims is to investigate the association between ABCB1 polymorphisms and methylation status on the antiplatelet effects of ASA in Chinese Han ischemic stroke patients. This is a prospective cohort analysis of eligible stroke patients who received ASA. Patients were divided into two groups according to the thrombelastogram and platelet aggregation test: aspirin resistance (AR) and aspirin-sensitive (AS) groups. The ABCB1 genetic polymorphism and the methylation status of promoter regions were analyzed using PCR-RFLP and the combined bisulfite restriction analysis (COBRA). The number of genotype CC + TT of C3435T in the AR group was greater than that of the AS group (p = 0.007). The DNA methylation levels of ABCB1 promoter in the AS group was higher than that of the AR group (p < 0.001), and the promoter methylation levels showed significant different among the CC, CT, and TT genotypes of C3435T individuals (p = 0.006), while there was no obvious difference between different genotypes of C1236T and G2677T/A polymorphisms (p > 0.05). We also found that the methylation status of the ABCB1 promoter correlated positively with arachidonic acid inhibition (AA%) (R = 0.781, p < 0.001).The ABCB1 polymorphism and methylation status was associated with the reduced efficacy of ASA treatment in ischemic stroke. Genetic polymorphism and DNA methylation of ABCB1 should be concerned when prescribing ASA.
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Al-Ghafari AB, Al Qahtani AM, Alturki SN, Al Doghaither HA, Elmorsy EM, Tashkandi HM, Abusanad AM, Alkhayyat SS, Omar UM, Zeeneldin AA. Association between MDR1 polymorphisms and XELIRI and XELOX chemoresistance in Saudi patients with colorectal cancer. Oncol Lett 2020; 20:155. [PMID: 32934723 PMCID: PMC7471754 DOI: 10.3892/ol.2020.12016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 07/02/2020] [Indexed: 12/19/2022] Open
Abstract
Multidrug resistance member 1 (MDR1) is located on chromosome 7 and encodes P-glycoprotein, which is universally accepted as a drug resistance biomarker. MDR1 polymorphisms can alter protein expression or function, which has been previously reported to associate with various types of malignancies, such as colorectal cancer (CRC). Therefore, the present study aimed to determine the effects of MDR1 polymorphisms on drug responses of Saudi patients with CRC. DNA samples were obtained from 62 patients with CRC and 100 healthy controls. Genotypes and allele frequencies of MDR1 single nucleotide polymorphisms (SNPs) G2677T and T1236C were determined using the PCR-restriction fragment length polymorphism procedure. The results showed no significant differences in the genotype distribution and allele frequency of T1236C between patients with CRC and controls. However, G2677T was found to serve a highly significant role in protecting against the progression of CRC. In addition, none of the genotypes in SNPs T1236C and G2677T was found to affect chemoresistance to XELIRI and XELOX. In conclusion, although T1236C in the MDR1 gene is not associated with CRC risk, G2677T protects against the development of CRC. Neither of the MDR1 SNPs tested were associated with the risk of chemoresistance. Therefore, these two SNPs cannot be used as molecular markers for predicting drug response in patients with CRC.
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Affiliation(s)
- Ayat B Al-Ghafari
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia.,Unit of Experimental Biochemistry, Faculty of Science, King Fahd Medical Research Center, Jeddah 21589, Kingdom of Saudi Arabia.,Unit of Cancer and Mutagenesis, Faculty of Science, King Fahd Medical Research Center, Jeddah 21589, Kingdom of Saudi Arabia.,Unit of Cancer Metabolism and Epigenetics, Faculty of Science, King Fahd Medical Research Center, Jeddah 21589, Kingdom of Saudi Arabia
| | - Areej M Al Qahtani
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Suzan N Alturki
- University Medical Services Center, Female's Campus, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Huda A Al Doghaither
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Ekramy M Elmorsy
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Hanaa M Tashkandi
- Department of General Surgery, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Atlal M Abusanad
- Department of Internal Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Shadi S Alkhayyat
- Department of Internal Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Ulfat M Omar
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Ahmed A Zeeneldin
- Department of Medical Oncology, King Abdullah Medical City, Makkah 24246, Kingdom of Saudi Arabia.,Department of Medical Oncology, National Cancer Institute, Cairo University, Cairo 11796, Egypt
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Han LL, Zuo BL, Cai WL, Guo ZN, Tong BH, Wei HL, Zhu Z, Li GY. Association between ABCB1 (3435C>T) polymorphism and susceptibility of colorectal cancer: A meta-analysis. Medicine (Baltimore) 2020; 99:e19189. [PMID: 32080102 PMCID: PMC7034701 DOI: 10.1097/md.0000000000019189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Studies on the relationship between ABCB1 3435C>T polymorphism (rs1045642) and colorectal cancer (CRC)susceptibility have yielded inconclusive results. To clarify this issue, we undertook a meta-analysis to investigate the relationship between rs1045642 and CRC risk.Three electronic scientific publication databases (Cochrane Library, Pubmed, Embase) were screened using specific search terms. Relevant literature was identified using literature traceability methods. Selected publications were evaluated according to the inclusion and exclusion criteria. Effect size information (odds ratio and the corresponding 95% confidence interval [CI]) was obtained following quality assessment and data extraction from the included publications, and a meta-analysis conducted. Statistical analysis was performed with the Stata sofz (Version 13.0) software.Overall, 17 case-control studies involving 7129 CRC patients and 7710 healthy control subjects satisfied the criteria for inclusion in the meta-analysis. There was no significant association between ABCB1 3435C>T polymorphism and CRC risk in any of the genetic models. In the CC versus CT model (I = 20.9%, Pheterogeneity = .276), CC versus CT + TT model (I = 45.6%, Pheterogeneity = .102) and CT versus CC + TT model (I = 17.8%, Pheterogeneity = .298) analyses, between-study heterogeneities were detected as significant in Asian populations. In the CT versus TT model (I = 24%, Pheterogeneity = .254) and CC + CT versus TT model (I = 0, Pheterogeneity = .55), between-study heterogeneities were found to be significant in groups of different populations.The meta-analysis described here suggests that the ABCB1 3435C>T polymorphism is not related to CRC susceptibility.
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Affiliation(s)
- Li-li Han
- College of Life Science and Agronomy, Zhoukou Normal University
- Department of Respiratory, Zhoukou Central Hospital, Zhoukou
| | - Bai-le Zuo
- Tumor Molecular Immunology and Immunotherapy Laboratory, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang
| | - Wei-liang Cai
- Department of Orthopedics Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Zhen-ni Guo
- College of Life Science and Agronomy, Zhoukou Normal University
| | - Bing-hua Tong
- College of Life Science and Agronomy, Zhoukou Normal University
| | - Hui-lian Wei
- College of Life Science and Agronomy, Zhoukou Normal University
| | - Zheng Zhu
- Department of Internal Medicine, Division of Hematology/Oncology, University of California Davis, Sacramento, CA, USA
| | - Guo-yin Li
- College of Life Science and Agronomy, Zhoukou Normal University
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Al Qahtani AM, Al-Ghafari AB, Al Doghaither HA, Alzahrani AH, Omar UM, Rahimulddin SA. ABCB1 variants C3435T and T129C are not associated with colorectal cancer risk. Afr Health Sci 2019; 19:2476-2483. [PMID: 32127820 PMCID: PMC7040265 DOI: 10.4314/ahs.v19i3.23] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the most prevalent cancers in Saudi Arabia that is highly characterized with poor survival rate and advanced metastasis. Many studies contribute this poor outcome to the expression of ABC transporters on the surface of cancer cells. Objectives In this study, two ABCB1 variants, C3435T and T129C, were examined to evaluate their contribution to CRC risk. Methods 125 subjects (62 CRC patients and 63 healthy controls) were involved. The DNA was isolated and analyzed with PCR-RFLP to determine the different genotypes. The hardy-Weinberg equilibrium was performed to determine genotype distribution and allele frequencies. Fisher's exact test (two-tailed) was used to compare allele frequencies between patients and control subjects. Results The study showed that for SNP C3435T, the population of both CRC patients and controls were out of Hardy-Weinberg equilibrium. Genotype distribution for CRC patients was (Goodness of fit χ2 = 20, df= 1, P≤0.05), whereas, for the controls the genotype distribution was (Goodness of fit χ2 = 21, df =1, P ≤0.05). For SNP T129C, all subjects showed normal (TT) genotype. Conclusion There was no significant association between ABCB1 3435C>T and 129T>C polymorphisms with CRC risk.
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Affiliation(s)
- Areej M Al Qahtani
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
| | - Ayat B Al-Ghafari
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
- Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, KSA
| | - Huda A Al Doghaither
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
| | | | - Ulfat M Omar
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
| | - Sawsan A Rahimulddin
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
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Dagenais R, Wilby KJ, Elewa H, Ensom MHH. Impact of Genetic Polymorphisms on Phenytoin Pharmacokinetics and Clinical Outcomes in the Middle East and North Africa Region. Drugs R D 2017; 17:341-361. [PMID: 28748348 PMCID: PMC5629135 DOI: 10.1007/s40268-017-0195-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Genetic polymorphisms are known to influence outcomes with phenytoin yet effects in the Middle East and North Africa region are poorly understood. OBJECTIVES The objective of this systematic review was to evaluate the impact of genetic polymorphisms on phenytoin pharmacokinetics and clinical outcomes in populations originating from the Middle East and North Africa region, and to characterize genotypic and allelic frequencies within the region for genetic polymorphisms assessed. METHODS MEDLINE (1946-3 May, 2017), EMBASE (1974-3 May, 2017), Pharmacogenomics Knowledge Base, and Public Health Genomics Knowledge Base online databases were searched. Studies were included if genotyping and analyses of phenytoin pharmacokinetics were performed in patients of the Middle East and North Africa region. Study quality was assessed using a National Institutes of Health assessment tool. A secondary search identified studies reporting genotypic and allelic frequencies of assessed genetic polymorphisms within the Middle East and North Africa region. RESULTS Five studies met the inclusion criteria. CYP2C9, CYP2C19, and multidrug resistance protein 1 C3435T variants were evaluated. While CYP2C9*2 and *3 variants significantly reduced phenytoin metabolism, the impacts of CYP2C19*2 and *3 variants were unclear. The multidrug resistance protein 1 CC genotype was associated with drug-resistant epilepsy, but reported impacts on phenytoin pharmacokinetics were conflicting. Appreciable variability in minor allele frequencies existed both between and within countries of the Middle East and North Africa region. CONCLUSIONS CYP2C9 decrease-of-function alleles altered phenytoin pharmacokinetics in patients originating from the Middle East and North Africa region. The impacts of CYP2C19 and multidrug resistance protein 1 C3435T variants on phenytoin pharmacokinetic and clinical outcomes are unclear and require further investigation. Future research should focus on the clinical outcomes associated with phenytoin therapy. PROSPERO 2017: CRD42017057850.
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Affiliation(s)
- Renée Dagenais
- Faculty of Pharmaceutical Sciences, Pharmaceutical Sciences Building, University of British Columbia, Vancouver, BC, Canada
| | - Kyle John Wilby
- College of Pharmacy, Qatar University, PO Box 2713, Doha, Qatar.
| | - Hazem Elewa
- College of Pharmacy, Qatar University, PO Box 2713, Doha, Qatar
| | - Mary H H Ensom
- Faculty of Pharmaceutical Sciences, Pharmaceutical Sciences Building, University of British Columbia, Vancouver, BC, Canada
- Department of Pharmacy, Children's and Women's Health Centre of British Columbia, Vancouver, BC, Canada
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Association between the C3435T polymorphism of ABCB1/MDR1 gene (rs1045642) and colorectal cancer susceptibility : a meta-analysis based on 11,339 subjects. Tumour Biol 2013; 34:1949-57. [PMID: 23504525 DOI: 10.1007/s13277-013-0740-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 03/05/2013] [Indexed: 12/20/2022] Open
Abstract
The association between ABCB1/MDR1 C3435T polymorphism and colorectal cancer has been evaluated. However, the results of these studies on the association remain inconsistent. To derive a more precise estimation of the relationship, a meta-analysis was performed. A comprehensive search was conducted to identify the eligible studies of ABCB1/MDR1 C3435T polymorphism and colorectal cancer risk. Summary odds ratios (OR) and 95 % confidence interval (CI) for ABCB1/MDR1 C3435T polymorphism and colorectal cancer were calculated. Statistical analysis was performed with the Stata (Version 12.0). Thirteen case-control studies, a total of 11,339 persons including 5,485 cases and 5,854 controls, met the included criteria and thus were selected. Collectively, the results of the present study suggest that there were no significant associations of ABCB1/MDR1 C3435T polymorphism with colorectal cancer observed for all comparison models. In the subgroup analysis, the same results were detected for both Caucasian and Asian populations. The results of this meta-analysis suggest that ABCB1/MDR1 C3435T polymorphism might be not related to colorectal cancer susceptibility.
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