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Jara-Prado A, Guerrero-Camacho JL, Ángeles-López QD, Ochoa-Morales A, Dávila-Ortiz de Montellano DJ, Ramírez-García MÁ, Breda-Yepes M, Durón RM, Delgado-Escueta AV, Barrios-González DA, Martínez-Juárez IE. Association of variants in the ABCB1, CYP2C19 and CYP2C9 genes for Juvenile Myoclonic Epilepsy. Neurol Sci 2024; 45:1635-1643. [PMID: 37875597 DOI: 10.1007/s10072-023-07124-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 10/06/2023] [Indexed: 10/26/2023]
Abstract
Juvenile myoclonic epilepsy (JME) is the most common of the generalized genetic epilepsies, with multiple causal and susceptibility genes; however, its etiopathogenesis is mainly unknown. The toxic effects caused by xenobiotics in cells occur during their metabolic transformation, mainly by enzymes belonging to cytochrome P450. The elimination of these compounds by transporters of the ABC type protects the central nervous system, but their accumulation causes neuronal damage, resulting in neurological diseases. The present study has sought the association between single nucleotide genetic variants of the CYP2C9, CYP2C19, and ABCB1 genes and the development of JME in patients compared to healthy controls. The CC1236 and GG2677 genotypes of ABCB1 in women; allele G 2677, genotypes GG 2677 and CC 3435 in men; the CYP2C19*2A allele, and the CYP2C19*3G/A genotype in both sexes were found to be risk factors for JME. Furthermore, carriers of the TTGGCC genotype combination of the ABCB1 gene (1236/2677/3435) have a 10.5 times higher risk of developing JME than non-carriers. Using the STRING database, we found an interaction between the proteins encoded by these genes and other possible proteins. These findings indicate that the CYP450 system and ABC transporters could interact with other genes in the JME.
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Affiliation(s)
- Aurelio Jara-Prado
- Genetics Department, National Institute of Neurology and Neurosurgery, Mexico City, Mexico
| | | | | | - Adriana Ochoa-Morales
- Genetics Department, National Institute of Neurology and Neurosurgery, Mexico City, Mexico
| | | | | | - Michelle Breda-Yepes
- National Institute of Neurology and Neurosurgery, Epilepsy Clinic, Mexico City, Mexico
| | - Reyna M Durón
- Universidad Tecnológica Centroamericana (UNITEC), Tegucigalpa, Honduras
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Cao Q, Zhu H, Xu W, Zhang R, Wang Y, Tian Z, Yuan Y. Predicting the efficacy of glucocorticoids in pediatric primary immune thrombocytopenia using plasma proteomics. Front Immunol 2023; 14:1301227. [PMID: 38162645 PMCID: PMC10757608 DOI: 10.3389/fimmu.2023.1301227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/04/2023] [Indexed: 01/03/2024] Open
Abstract
Objective Primary immune thrombocytopenia (ITP) is the most common acquired autoimmune bleeding disorder among children. While glucocorticoids are the primary first-line treatment for ITP treatment, they prove ineffective in certain patients. The challenge of identifying biomarkers capable of early prediction regarding the response to glucocorticoid therapy in ITP persists. This study aimed to identify ideal biomarkers for predicting glucocorticoid efficacy in patients with ITP using plasma proteomics. Methods A four-dimensional data-independent acquisition approach was performed to determine the differentially expressed proteins in plasma samples collected from glucocorticoid-sensitive (GCS) (n=18) and glucocorticoid-resistant (GCR) (n=17) children with ITP treated with prednisone. The significantly differentially expressed proteins were selected for enzyme-linked immunosorbent assay validation in a cohort conprising 65 samples(30 healthy controls, 18 GCS and 17 GCR children with ITP). Receiver operating characteristics curves, calibration curves, and clinical decision curve analysis were used to determine the diagnostic efficacy of this method. Results 47 differentially expressed proteins (36 up-regulated and 11 down-regulated) were identified in the GCR group compared with the GCS group. The significantly differentially expressed proteins myosin heavy chain 9 (MYH9) and fetuin B (FETUB) were selected for enzyme-linked immunosorbent assay validation. The validation results were consistent with the proteomics analyses. Compared with the GCS group, the GCR group exhibited a significantly reduced the plasma concentration of MYH9 and elevated the plasma concentration of FETUB. Furthermore, the receiver operating characteristics curves, calibration curves, and clinical decision curve analysis demonstrated good diagnostic efficacy of these validated biomarkers. Conclusion This study contributes to the establishment of objective biological indicators for precision therapy in children with ITP. More importantly, the proteins MYH9 and FETUB hold potential as a foundation for making informed decisions regarding alternative treatments for drugresistant patients, thereby preventing treatment delays.
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Affiliation(s)
- Qingqing Cao
- Department of Pediatrics, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Haiyan Zhu
- Department of Pediatrics, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Wei Xu
- Department of Pediatrics, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Rongrong Zhang
- Department of Pediatrics, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Yun Wang
- Department of Pediatrics, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Zhaofang Tian
- Department of Neonatology, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Yufang Yuan
- Department of Pediatrics, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
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Ahmed HA, Fahmy EM, Abdelkreem E, Mahmoud EA, Nafady A, Ahmed EH. Frequency of toll-like receptor 4 variants and association with treatment response in children with primary immune thrombocytopenia. Pediatr Blood Cancer 2023; 70:e30646. [PMID: 37638833 DOI: 10.1002/pbc.30646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 07/25/2023] [Accepted: 08/16/2023] [Indexed: 08/29/2023]
Abstract
OBJECTIVES To investigate the frequency of toll-like receptor 4 (TLR4) variants c.896A>G (p.Asp299Gly) and c.1196C>T (p.Thr399Ile) among Egyptian children with primary immune thrombocytopenia (pITP), and their association with disease course and response to treatment. METHODS A case-control study that included 80 children with pITP and 50 age- and sex-matched healthy controls. TLR4 c.896A>G and c.1196C>T variants were genotyped using polymerase chain reaction-restriction fragment length polymorphism. Patients were classified according to their response to treatment after 3 months as responders and nonresponders. RESULTS Compared with controls, children with pITP had significantly higher minor allele frequencies of TLR4 p.Asp299Gly (16.25% vs. 6%, odds ratio [OR] 3.04, 95% confidence interval [CI]: 1.16-9.36, p = .014) and p.Thr399Ile (20% vs. 4%, OR 6, 95% CI: 2.02-24.01, p < .001). The presence of p.Asp299Gly variant was significantly associated with chronic ITP (OR 7.78, 95% CI: 2.04-35.69, p < .001) and non-response to therapy with steroid (OR 11.67, 95% CI: 1.32-104.08, p = .012), but not thrombopoietin-receptor agonist (OR 1.67, 95% CI: 0.35-8.19, p = .464). Likewise, having p.Thr399Ile variant was significantly associated with chronic ITP (OR 5.14, 95% CI: 1.6-17.4, p = .002) and non-response to therapy with steroid (OR 6.1, 95% CI: 1.01-49.06, p = .046) but not thrombopoietin-receptor agonist (OR 1.57, 95% CI: 0.33-7.58, p = .515). CONCLUSION The presence of TLR4 p.Asp299Gly or p.Thr399Ile variant may be associated with ITP predisposition, chronicity, and non-response to upfront steroid therapy. These findings enhance our understanding of the complex pathophysiology of pITP with potentially important clinical implications.
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Affiliation(s)
- Heba A Ahmed
- Department of Clinical Pathology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Eman M Fahmy
- Department of Pediatrics, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Elsayed Abdelkreem
- Department of Pediatrics, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Ekram A Mahmoud
- Department of Microbiology & Immunology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Asmaa Nafady
- Department of Clinical and Chemical Pathology, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Eman H Ahmed
- Department of Clinical Pathology, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
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Zakaria M, Hassan T, Fawzy A, Fathy M, Abdelazeem M, Magdy Abdelnour H, Abdelstar E, Nafea A, Ali AA. Association between ATP binding cassette gene member 1 polymorphism and glucocorticoid response in children with immune thrombocytopenia. Medicine (Baltimore) 2022; 101:e29894. [PMID: 35839018 PMCID: PMC11132344 DOI: 10.1097/md.0000000000029894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 06/09/2022] [Indexed: 10/14/2022] Open
Abstract
ATP binding Cassette gene member 1 (ABCB1) polymorphism has been incriminated in susceptibility to many malignant, infectious and autoimmune diseases. Recently, it was reported that ABCB1 polymorphisms might have a link to disease progression as well as response to therapy. We aimed to study the association between ABCB1 gene polymorphism and glucocorticoid response in children with newly diagnosed immune thrombocytopenia (ITP). A case control study was conducted on 90 newly diagnosed children with ITP and 90 healthy controls over a period of 1 year. ABCB1 (C3435T) polymorphism was determined by restriction fragment length polymorphism-polymerase chain reaction (RFLP-PCR) in patients and controls. There was no significant difference between patients and controls as regards to frequency of different ABCB1 genotypes (CC, CT, and TT genotypes were 44.4%, 36.7%, and 18.9% respectively in patients and 48.9%, 38.9%, and 12.2% respectively in controls, P value = 0.18). 80% of patients who received steroids alone or steroids in combination with intravenous immunoglobulin showed complete recovery. There was highly significant relationship between ABCB1 genotypes and response to steroids where 55 % of responders had CC (wild) genotype while 40 % of nonresponders had TT (mutant) genotype. We concluded that ABCB1 gene polymorphism may contribute to the response to steroids in Egyptian children with ITP where patients with homozygous CC genotype responded better to steroids than patients with homozygous TT genotype. These results may help us choose the appropriate initial treatment in these children.
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Affiliation(s)
- Marwa Zakaria
- Pediatric Department, Zagazig University, Zagazig, Egypt
| | - Tamer Hassan
- Pediatric Department, Zagazig University, Zagazig, Egypt
| | - Amal Fawzy
- Medical Biochemistry Department, Zagazig University, Zagazig, Egypt
| | - Manar Fathy
- Pediatric Department, Zagazig University, Zagazig, Egypt
| | | | | | - Eman Abdelstar
- Pediatric Department, Zagazig University, Zagazig, Egypt
| | - Alaa Nafea
- Pediatric Department, Zagazig University, Zagazig, Egypt
| | - Ahmed A. Ali
- Pediatric Department, Zagazig University, Zagazig, Egypt
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Single Nucleotide Polymorphisms of the HIF1A Gene are Associated With Sensitivity of Glucocorticoid Treatment in Pediatric ITP Patients. J Pediatr Hematol Oncol 2022; 45:195-199. [PMID: 35537010 DOI: 10.1097/mph.0000000000002483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Hypoxia-inducible factor-1α (HIF-1α) plays a crucial role in both innate and adaptive immunity. Emerging evidence indicates that HIF-1α is associated with the inflammation and pathologic activities of autoimmune diseases, suggesting that HIF1α may be involved in immune dysregulation in patients with immune thrombocytopenia (ITP). The purpose of this study was to evaluate whether single nucleotide polymorphisms (SNPs) of the HIF1A gene are associated with susceptibility to ITP and its clinical prognosis including incidence of chronic ITP and glucocorticoid sensitivity. MATERIALS AND METHODS This study involved 197 Chinese ITP pediatric patients (discovery cohort) and 220 healthy controls. The Sequenom MassArray system (Sequenom, San Diego, CA) was used to detect 3 SNPs genotypes in the HIF1A gene: rs11549465, rs1957757, and rs2057482. We also used another ITP cohort (N=127) to validate the significant results of SNPs found in the discovery cohort. RESULTS The frequencies of the three SNPs did not show any significant differences between the ITP and healthy control groups. The CT genotype at rs11549465 was significantly higher in ITP patients sensitive to glucocorticoid treatment than in those insensitive to glucocorticoid treatment (P=0.025). These results were validated using another ITP cohort (N=127, P=0.033). Moreover, the CC genotype was a risk factor for insensitive to GT the odds ratio (95% confidence interval) was 5.96 (5.23-6.69) in standard prednisone (P=0.0069) and 6.35 (5.33-7.37) in high-dose dexamethasone (P=0.04). CONCLUSIONS Although HIF1A gene polymorphisms were not associated with susceptibility to ITP, the CT genotype at rs11549465 was associated with the sensitivity to glucocorticoid treatment of ITP patients, suggesting that the rs11549465 SNP may contribute to the sensitivity of glucocorticoid treatment in pediatric ITP patients.
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Dai Y, Ni S, Wu F, Guo S, Zhao X, Wang J. ABCB1 gene polymorphisms impact the effect of high-dose intravenous methylprednisolone therapy on optic neuritis associated with AQP4-IgG-positive neuromyelitis optica spectrum disorder. J Clin Pharm Ther 2022; 47:1379-1387. [PMID: 35488449 DOI: 10.1111/jcpt.13675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/23/2022] [Accepted: 04/11/2022] [Indexed: 11/29/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Patients with optic neuritis (ON) have significant individual differences in their response to high-dose intravenous methylprednisolone (HIMP) therapy. This study aims to evaluate the association between gene polymorphisms and the efficacy of HIMP therapy in Chinese Han patients with ON mediated by aquaporin-4 immunoglobulin G antibody (AQP4-IgG) -positive neuromyelitis optica spectrum disorder (NMOSD) or multiple sclerosis (MS). METHODS Chinese Han patients with AQP4-IgG+ NMOSD-ON or MS-ON were genotyped for four candidate genes: ABCB1 (rs1045642, rs1128503, rs2032582), NR3C1 (rs41423247), TBX21 (rs9910408, rs16947078) and VDR (rs731236, rs1544410, rs7975232, rs2228570). Patients were divided into glucocorticoid resistance (GR) and glucocorticoid sensitivity (GS) groups based on vision acuity (VA) improvement after HIMP treatment. Intergroup comparisons were performed on clinical characteristics, allele and genotype frequencies and haplotype distributions. RESULTS A total of 267 patients completed the follow-up, including 120 patients with AQP4-IgG+ NMOSD-ON and 147 patients with MS-ON. We observed a significant association between the ABCB1 G2677T/A (rs2032582) polymorphism and glucocorticoid response in AQP4-IgG+ NMOSD-ON patients. Changes in VA scores in patients with the GG genotype were significantly lower than those in patients with the T/A T/A genotype (1.07 ± 1.20 vs. 1.77 ± 1.31, p = 0.026). In the GS group, the G allele had a lower frequency than the T/A allele (32.03% vs. 60.16%, p = 0.001). Logistic regression analysis showed that the G2677T/A GG and G T/A genotypes could increase the GR risk 3.53 and 2.67 times compared with the T/A T/A genotype, respectively (OR = 3.534, 95% CI: 1.186-10.527, p = 0.023; OR = 2.675, 95% CI: 1.005-7.123, p = 0.049). In addition, haplotype analysis showed that AQP4-IgG+ NMOSD-ON patients with the TAT/TTT haplotype (ABCB1 C3435T-G2677T/A-C1236T) were only 0.54 times more likely to develop GR than those with other haplotypes (OR = 0.542, 95% CI: 0.315-0.932, p = 0.026). However, we did not observe intergroup differences in the MS-ON population. WHAT IS NEW AND CONCLUSION Our findings suggest that the G > T/A polymorphism of ABCB1 G2677T/A and the TAT/TTT haplotype played a protective role in HIMP treatment of AQP4-IgG+ NMOSD-ON but not MS-ON.
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Affiliation(s)
- Yuyang Dai
- National Institute for Drug Clinical Trial, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Siyang Ni
- National Institute for Drug Clinical Trial, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Feng Wu
- National Institute for Drug Clinical Trial, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Shaojie Guo
- National Institute for Drug Clinical Trial, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xiuli Zhao
- National Institute for Drug Clinical Trial, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jiawei Wang
- Department of Neurology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Guerrero Camacho JL, Corona Vázquez T, Flores Rivera JJ, Ochoa Morales A, Martínez Ruano L, Torres Ramírez de Arellano I, Dávila Ortiz de Montellano DJ, Jara Prado A. ABCB1 gene variants as risk factors and modulators of age of onset of demyelinating disease in Mexican patients. NEUROLOGÍA (ENGLISH EDITION) 2022; 38:65-74. [PMID: 35256320 DOI: 10.1016/j.nrleng.2020.05.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/05/2020] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION The C1236T, G2677T/A, and C3435T variants of the ABCB1 gene alter the functioning of P-glycoprotein and the transport of endogenous and exogenous substances across the blood-brain barrier, and act as risk factors for some neurodegenerative diseases. This study aimed to determine the association between demyelinating disease and the C1236T, G2677T/A, and C3435T variants of ABCB1 and its haplotypes and combinations of genotypes. METHODS Polymerase chain reaction with restriction fragment length polymorphism analysis (PCR-RFLP) and Sanger sequencing were used to genotype 199 patients with demyelinating disease and 200 controls, all Mexicans of mixed race; frequencies of alleles, genotypes, haplotypes, and genotype combinations were compared between patients and controls. We conducted a logistic regression analysis and calculated chi-square values and 95% confidence intervals (CI); odds ratios (OR) were calculated to evaluate the association with demyelinating disease. RESULTS The TTT and CGC haplotypes were most frequent in both patients and controls. The G2677 allele was associated with demyelinating disease (OR: 1.79; 95% CI, 1.12-2.86; P = .015), as were the genotypes GG2677 (OR: 2.72; 95% CI, 1.11-6.68; P = .025) and CC3435 (OR: 1.82; 95% CI, 1.15-2.90; P = .010), the combination GG2677/CC3435 (OR: 2.02; 95% CI, 1.17-3.48; P = .010), and the CAT haplotype (OR: 0.21; 95% CI, 0.05-0.66; P = .001). TTTTTT carriers presented the earliest age of onset (23.0 ± 7.7 years, vs 31.6 ± 10.7; P = .0001). CONCLUSIONS The GG2677/CC3435 genotype combination is associated with demyelinating disease in this sample, particularly among men, who may present toxic accumulation of P-glycoprotein substrates. In our study, the G2677 allele of ABCB1 may differentially modulate age of onset of demyelinating disease in men and women.
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Affiliation(s)
- J L Guerrero Camacho
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - T Corona Vázquez
- Laboratorio Clínico de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - J J Flores Rivera
- Laboratorio Clínico de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - A Ochoa Morales
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - L Martínez Ruano
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - I Torres Ramírez de Arellano
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - D J Dávila Ortiz de Montellano
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico
| | - A Jara Prado
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, Mexico.
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Zanaty M, Korayem O, Meabed MH, El Demerdash D, Abdelghany WM. Impact of TNFAIP3 Genetic Polymorphisms on Primary Immune Thrombocytopenia in Egyptian Adults: Case-control Study. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.6539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Immune Thrombocytopenia (ITP) is a common acquired hematological disease. Genetic polymorphisms play an important role in ITP pathogenesis and prognosis. TNF-α-induced protein 3 (TNFAIP3) is a negative regulator of NF-kB in many signaling pathways. Several variants of TNFAIP3 have been associated with various inflammatory autoimmune disorders.
AIM: Our study aimed to study the association of TNFAIP3 single nucleotide polymorphisms (SNPs); rs2230926 & rs5029939 with ITP susceptibility, as well ITP prognosis by follow up the cases for 18 months.
METHODS: One hundred and ten ITP patients as well 110 matched unrelated normal controls were enrolled in our study. The polymorphisms were assessed by real-time polymerase chain reaction (real time PCR).
RESULTS: There were a significant difference between cases and control groups regarding rs2230926 T>G and rs5029939 C>G frequencies with p < 0.05. Linkage disequilibrium (LD) analysis of the two variants revealed that there was a significant LD (p < 0.001). Non-cutaneous bleeding manifestations were observed mainly in the mutant genotypes of rs2230926 and rs5029939. The ITP patients with mutant genotypes of rs5029939 showed more need to use 2nd line immunosuppressive therapy as well the mutant genotypes of rs2230926 showed more steroid dependence and less complete recovery.
CONCLUSION: Our data concluded the presence of LD between rs5029939 and rs2230926. The mutant genotypes of both variants were associated with increase the susceptibility to ITP and accompanied by worse clinical manifestations and poor response to the treatment in the adult Egyptian patients.
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Relationship of MDR1 gene polymorphism and P-glycoprotein expression in Chinese refractory lupus nephritis. Biologia (Bratisl) 2021. [DOI: 10.2478/s11756-020-00577-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractTo evaluate the association of multidrug resistance 1 (MDR1) polymorphism and the expression of P-glycoprotein (Pgp) in Chinese refractory lupus nephritis (LN) patients. Polymerase chain reaction-direct sequencing was used to analyze MDR1 polymorphism. The genotype distribution of MDR1 polymorphism in 132 SLE (systemic lupus erythematosus) patients was evaluated. ELISA was used to measure the expression of Pgp. Relationship among Pgp expression, MDR1 polymorphism, SLEDAI (SLE disease activity index), and kidney pathological score was analyzed by using One-way ANOVA and Pearson linear correlation. The frequency distribution of the MDR1 gene was consistent with the Hardy-Weinberg equilibrium. Compared with CT and CC, patients with T/T homozygote in MDR1 C3435T had significantly increased Pgp expression in the refractory group (p < 0.05). Additionally, SLEDAI score was positively correlated with Pgp expression (r = 0.481, p < 0.05). Also, Pgp expression was positively correlated with renal pathological activity index (r = 0.76, p < 0.05). MDR1 C3435T polymorphism is significantly associated with Pgp expression in patients with refractory LN. Pgp expression is closely related to SLEDAI and renal pathological score. Thus, Pgp may be useful in evaluation of the prognosis of patients with refractory LN.
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Guerrero Camacho JL, Corona Vázquez T, Flores Rivera JJ, Ochoa Morales A, Martínez Ruano L, Torres Ramírez de Arellano I, Dávila Ortiz de Montellano DJ, Jara Prado A. ABCB1 gene variants as risk factors and modulators of age of onset of demyelinating disease in Mexican patients. Neurologia 2020; 38:S0213-4853(20)30216-4. [PMID: 32912743 DOI: 10.1016/j.nrl.2020.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/28/2020] [Accepted: 05/05/2020] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION The C1236T, G2677T/A, and C3435T variants of the ABCB1 gene alter the functioning of P-glycoprotein and the transport of endogenous and exogenous substances across the blood-brain barrier, and act as risk factors for some neurodegenerative diseases. This study aimed to determine the association between demyelinating disease and the C1236T, G2677T/A, and C3435T variants of ABCB1 and its haplotypes and combinations of genotypes. METHODS Polymerase chain reaction with restriction fragment length polymorphism analysis (PCR-RFLP) and Sanger sequencing were used to genotype 199 patients with demyelinating disease and 200 controls, all Mexicans of mixed race; frequencies of alleles, genotypes, haplotypes, and genotype combinations were compared between patients and controls. We conducted a logistic regression analysis and calculated chi-square values and 95% confidence intervals (CI); odds ratios (OR) were calculated to evaluate the association with demyelinating disease. RESULTS The TTT and CGC haplotypes were most frequent in both patients and controls. The G2677 allele was associated with demyelinating disease (OR: 1.79; 95% CI: 1.12-2.86; P=.015), as were the genotypes GG2677 (OR: 2.72; 95% CI: 1.11-6.68; P=.025) and CC3435 (OR: 1.82; 95% CI: 1.15-2.90; P=.010), the combination GG2677/CC3435 (OR: 2.02; 95% CI, 1.17-3.48; P=.010), and the CAT haplotype (OR: 0.21; 95% CI: 0.05-0.66; P=.001). TTTTTT carriers presented the earliest age of onset (23.0±7.7 years, vs. 31.6±10.7; P=.0001). CONCLUSIONS The GG2677/CC3435 genotype combination is associated with demyelinating disease in this sample, particularly among men, who may present toxic accumulation of P-glycoprotein substrates. In our study, the G2677 allele of ABCB1 may differentially modulate age of onset of demyelinating disease in men and women.
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Affiliation(s)
- J L Guerrero Camacho
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - T Corona Vázquez
- Laboratorio Clínico de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - J J Flores Rivera
- Laboratorio Clínico de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - A Ochoa Morales
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - L Martínez Ruano
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - I Torres Ramírez de Arellano
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - D J Dávila Ortiz de Montellano
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México
| | - A Jara Prado
- Departamento de Genética, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Ciudad de México, México.
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11
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Speidel JT, Xu M, Abdel-Rahman SZ. Bisphenol A (BPA) and bisphenol S (BPS) alter the promoter activity of the ABCB1 gene encoding P-glycoprotein in the human placenta in a haplotype-dependent manner. Toxicol Appl Pharmacol 2018; 359:47-54. [PMID: 30240697 PMCID: PMC6196727 DOI: 10.1016/j.taap.2018.09.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/12/2018] [Accepted: 09/17/2018] [Indexed: 10/28/2022]
Abstract
Exposure to bisphenols (BPA and BPS) during pregnancy can significantly affect fetal development and increase risk of adverse health consequences, however the underlying mechanisms are not fully elucidated. In human placenta, the efflux transporter P-glycoprotein (P-gp), encoded by the ABCB1 gene, extrudes its substrates from the trophoblasts back into the maternal circulation. Alterations in levels of placental P-gp could therefore significantly affect fetal exposure to xenobiotics that are P-gp substrates. The ABCB1 promoter contains many single nucleotide polymorphisms (SNPs). In the genome, SNPs are not arrayed as independent variants but as combinations forming defined haplotypes. Recently, we determined the haplotype sequences encompassing the ABCB1 promoter SNPs and found that promoter haplotypes differentially affect ABCB1 promoter activity. Here we investigate the effect of BPA and BPS on ABCB1 promoter activity by testing the hypothesis that BPA and BPS exposure affect ABCB1 promoter activity in a haplotype-dependent manner. Our data indicate that acute exposure to 50 nM BPA induced a significant haplotype-dependent increase in ABCB1 promoter activity (P < .05). However, acute exposure to 0.5 nM BPS induced a significant decrease (P < .05) in promoter activity that was haplotype-dependent. Chronic exposure to BPA and BPS individually (5 nM and 0.3 nM, respectively) or as a mixture (5 nM BPA:1.5 nM BPS) induced significant haplotype-dependent increases (P < .01) in ABCB1 promoter activity. Our data indicate that BPA and BPS significantly alter ABCB1 promoter activity in a haplotype- and exposure type- dependent manners. Such alteration could significantly impact placental P-gp levels and alter fetal exposure to many therapeutic and environmental xenobiotics.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/drug effects
- ATP Binding Cassette Transporter, Subfamily B/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/biosynthesis
- ATP Binding Cassette Transporter, Subfamily B, Member 1/drug effects
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- Adult
- Benzhydryl Compounds/toxicity
- Cell Line
- Endocrine Disruptors/toxicity
- Female
- Fetal Development
- Gene Expression Regulation/drug effects
- Haplotypes
- Humans
- Phenols/pharmacology
- Phenols/toxicity
- Placenta/drug effects
- Placenta/metabolism
- Polymorphism, Single Nucleotide
- Pregnancy
- Promoter Regions, Genetic/drug effects
- Sulfones/pharmacology
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Affiliation(s)
- Jordan T Speidel
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX 77555, USA; Department of Obstetrics and Gynecology, Maternal-fetal Pharmacology and Biodevelopment Laboratories, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Meixiang Xu
- Department of Obstetrics and Gynecology, Maternal-fetal Pharmacology and Biodevelopment Laboratories, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Sherif Z Abdel-Rahman
- Department of Obstetrics and Gynecology, Maternal-fetal Pharmacology and Biodevelopment Laboratories, The University of Texas Medical Branch, Galveston, TX 77555, USA.
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12
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Pharmacogenomic markers of glucocorticoid response in the initial phase of remission induction therapy in childhood acute lymphoblastic leukemia. Radiol Oncol 2018; 52:296-306. [PMID: 30210047 PMCID: PMC6137363 DOI: 10.2478/raon-2018-0034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 04/24/2018] [Indexed: 12/03/2022] Open
Abstract
Background Response to glucocorticoid (GC) monotherapy in the initial phase of remission induction treatment in childhood acute lymphoblastic leukemia (ALL) represents important biomarker of prognosis and outcome. We aimed to study variants in several pharmacogenes (NR3C1, GSTs and ABCB1) that could contribute to improvement of GC response through personalization of GC therapy. Methods Retrospective study enrolling 122 ALL patients was carried out to analyze variants of NR3C1 (rs33389, rs33388 and rs6198), GSTT1 (null genotype), GSTM1 (null genotype), GSTP1 (rs1695 and rs1138272) and ABCB1 (rs1128503, rs2032582 and rs1045642) genes using PCR-based methodology. The marker of GC response was blast count per microliter of peripheral blood on treatment day 8. We carried out analysis in which cut-off value for GC response was 1000 (according to Berlin-Frankfurt-Munster [BFM] protocol), as well as 100 or 0 blasts per microliter. Results Carriers of rare NR3C1 rs6198 GG genotype were more likely to have blast count over 1000, than the non-carriers (p = 0.030). NR3C1 CAA (rs33389-rs33388-rs6198) haplotype was associated with blast number below 1000 (p = 0.030). GSTP1 GC haplotype carriers were more likely to have blast number below 1000 (p = 0.036), below 100 (p = 0.028) and to be blast negative (p = 0.054), while GSTP1 GT haplotype and rs1138272 T allele carriers were more likely to be blasts positive (p = 0.034 and p = 0.024, respectively). ABCB1 CGT (rs1128503-rs2032582-rs1045642) haplotype carriers were more likely to be blast positive (p = 0.018). Conclusions Our results have shown that NR3C1 rs6198 variant and GSTP1 rs1695-rs1138272 haplotype are the most promising pharmacogenomic markers of GC response in ALL patients.
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13
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Öztaş E, Parejo Garcia-Saavedra A, Yanar F, Özçinar B, Aksakal N, Purisa S, Özhan G. P-glycoprotein polymorphism and levothyroxine bioavailability in hypothyroid patients. Saudi Pharm J 2018; 26:274-278. [PMID: 30166928 PMCID: PMC6111188 DOI: 10.1016/j.jsps.2017.11.012] [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: 08/10/2017] [Accepted: 11/26/2017] [Indexed: 10/26/2022] Open
Abstract
Objectives P-glycoprotein (P-gp) contributes to the disposition of a wide variety of drugs; therefore, single nucleotide polymorphisms (SNPs) in the P-gp coding gene might affect its activity. It is well known that personalized medicine, instead of empirical treatment, is a clinically important approach for enhancing responses among patients. Indeed, there is a need to evaluate the association between SNPs of P-gp encoded multidrug resistance genes (MDR1, ABCB1), and the dosage requirements of these drugs. In the present study, we evaluated the association between the dosage of Levothyroxine (L-T4) and three common SNPs (C1236T, G2677T/A and C3435T). Methods Genotyping was done using a real-time PCR platform with DNA samples isolated from the venous blood of ninety post thyroidectomy hypothyroid patients. Thyroid hormone levels were measured as routine biochemistry laboratories in the Medical School of Istanbul University. Results In the genotype analysis, the minor allele frequencies were 0.48 for C1236T, 0.51 for G2677T/A, and 0.51 for C3435T. In the haplotype-based analysis, T1236T2677T3435 and C1236G2677C3435 were observed as major haplotypes (50.2 and 32.6%, respectively), in agreement with previous studies. The administered dose of L-T4 to achieve physiological thyroid hormone levels was found to be similar in all genotypes and haplotypes, indicating that there is no significant association between MDR1 polymorphisms and L-T4 doses. Conclusion Because of conflicted previous reports about the genetic contribution of MDR1 polymorphisms to drug disposition, further studies with large numbers of participants are required to clarify this influence.
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Affiliation(s)
- Ezgi Öztaş
- Istanbul University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, 34116 Beyazit, Istanbul, Turkey
| | | | - Fatih Yanar
- Istanbul University, Faculty of Medicine, Department of General Surgery, 34093 Fatih, Istanbul, Turkey
| | - Beyza Özçinar
- Istanbul University, Faculty of Medicine, Department of General Surgery, 34093 Fatih, Istanbul, Turkey
| | - Nihat Aksakal
- Istanbul University, Faculty of Medicine, Department of General Surgery, 34093 Fatih, Istanbul, Turkey
| | - Sevim Purisa
- Istanbul University, Faculty of Pharmacy, Department of Pharmaceutical Technology, 34116 Beyazit, Istanbul, Turkey
| | - Gül Özhan
- Istanbul University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, 34116 Beyazit, Istanbul, Turkey
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14
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Impact of NR1I2, adenosine triphosphate-binding cassette transporters genetic polymorphisms on the pharmacokinetics of ginsenoside compound K in healthy Chinese volunteers. J Ginseng Res 2018; 43:460-474. [PMID: 31308818 PMCID: PMC6606825 DOI: 10.1016/j.jgr.2018.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/11/2018] [Accepted: 04/17/2018] [Indexed: 02/06/2023] Open
Abstract
Background Ginsenoside compound K (CK) is a promising drug candidate for rheumatoid arthritis. This study examined the impact of polymorphisms in NR1I2, adenosine triphosphate–binding cassette (ABC) transporter genes on the pharmacokinetics of CK in healthy Chinese individuals. Methods Forty-two targeted variants in seven genes were genotyped in 54 participants using Sequenom MassARRAY system to investigate their association with major pharmacokinetic parameters of CK and its metabolite 20(S)-protopanaxadiol (PPD). Subsequently, molecular docking was simulated using the AutoDock Vina program. Results ABCC4 rs1751034 TT and rs1189437 TT were associated with increased exposure of CK and decreased exposure of 20(S)-PPD, whereas CFTR rs4148688 heterozygous carriers had the lowest maximum concentration (Cmax) of CK. The area under the curve from zero to the time of the last quantifiable concentration (AUClast) of CK was decreased in NR1I2 rs1464602 and rs2472682 homozygous carriers, while Cmax was significantly reduced only in rs2472682. ABCC4 rs1151471 and CFTR rs2283054 influenced the pharmacokinetics of 20(S)-PPD. In addition, several variations in ABCC2, ABCC4, CFTR, and NR1I2 had minor effects on the pharmacokinetics of CK. Quality of the best homology model of multidrug resistance protein 4 (MRP4) was assessed, and the ligand interaction plot showed the mode of interaction of CK with different MRP4 residues. Conlusion ABCC4 rs1751034 and rs1189437 affected the pharmacokinetics of both CK and 20(S)-PPD. NR1I2 rs1464602 and rs2472682 were only associated with the pharmacokinetics of CK. Thus, these hereditary variances could partly explain the interindividual differences in the pharmacokinetics of CK.
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15
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Li J, Ma S, Shao L, Ma C, Gao C, Zhang XH, Hou M, Peng J. Inflammation-Related Gene Polymorphisms Associated With Primary Immune Thrombocytopenia. Front Immunol 2017; 8:744. [PMID: 28702029 PMCID: PMC5487479 DOI: 10.3389/fimmu.2017.00744] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 06/12/2017] [Indexed: 12/13/2022] Open
Abstract
Primary immune thrombocytopenia (ITP) is an acquired autoimmune disease characterized by a reduced platelet count and an increased risk of bleeding. Although immense research has improved our understanding of ITP, the pathogenesis remains unclear. Here, we investigated the involvement of 25 single-nucleotide polymorphisms (SNPs) of the inflammation-related genes, including CD24, CD226, FCRL3, IL2, IRF5, ITGAM, NLRP3, CARD8, PTPN22, SH2B2, STAT4, TNFAIP3, and TRAF1, in the pathogenesis and treatment response of ITP. We recruited 312 ITP inpatients and 154 healthy participants in this case–control study. Inflammation-related SNP genotyping was performed on the Sequenom MassARRAY iPLEX platform. The expression of TNFAIP3 mRNA was determined by quantitative real-time RT-PCR. All SNPs in healthy controls were consistent with Hardy–Weinberg equilibrium. Statistical analysis revealed that rs10499194 in TNFAIP3 was significantly associated with a decreased risk of ITP after Bonferroni multiple correction (codominant, CT vs. CC, OR = 0.431, 95% CI = 0.262–0.711, p = 0.001; dominant, TT/CT vs. CC, OR = 0.249, 95% CI = 0.141–0.440, p = 0.000). Besides, TNFAIP3 expression was significantly higher in patients with CT and pooled CT/TT genotypes compared with CC genotype (p = 0.001; p = 0.001). Interestingly, rs10499194 was also associated with corticosteroid-sensitivity (codominant, CT vs. CC, OR = 0.092, 95% CI = 0.021–0.398, p = 0.001; dominant, TT/CT vs. CC, OR = 0.086, 95% CI = 0.020–0.369, p = 0.001; allelic, T vs. C, OR = 0.088, 95% CI = 0.021–0.372, p = 0.001). Furthermore, no significant association was found between inflammation-related SNPs and the severity or refractoriness of ITP after Bonferroni multiple correction. Our findings suggest that rs10499194 may be a protective factor for susceptibility and corticosteroid sensitivity in ITP patients.
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Affiliation(s)
- Ju Li
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, China
| | - Sai Ma
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, China
| | - Linlin Shao
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, China
| | - Chunhong Ma
- Department of Immunology, Shandong University School of Medicine, Jinan, China
| | - Chengjiang Gao
- Department of Immunology, Shandong University School of Medicine, Jinan, China
| | - Xiao-Hui Zhang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University Institute of Hematology, Peking University People's Hospital, Beijing, China
| | - Ming Hou
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, China.,Shandong Provincial Key Laboratory of Immunohematology, Qilu Hospital, Shandong University, Jinan, China
| | - Jun Peng
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, China
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16
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Rychlik-Sych M, Barańska M, Dudarewicz M, Skrętkowicz J, Żebrowska A, Owczarek J, Waszczykowska E. ABCB1
-Gen-Polymorphismus in einer polnischen Kohorte ist mit Risiko für bullöses Pemphigoid assoziiert. J Dtsch Dermatol Ges 2017; 15:499-506. [DOI: 10.1111/ddg.13182_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/10/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Mariola Rychlik-Sych
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Małgorzata Barańska
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Michał Dudarewicz
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Jadwiga Skrętkowicz
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Agnieszka Żebrowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology; Medical University of Lodz; Łódz´ Polen
| | - Jacek Owczarek
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Elżbieta Waszczykowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology; Medical University of Lodz; Łódz´ Polen
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17
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Rudin S, Marable M, Huang RS. The Promise of Pharmacogenomics in Reducing Toxicity During Acute Lymphoblastic Leukemia Maintenance Treatment. GENOMICS PROTEOMICS & BIOINFORMATICS 2017; 15:82-93. [PMID: 28391009 PMCID: PMC5414888 DOI: 10.1016/j.gpb.2016.11.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/19/2016] [Accepted: 11/14/2016] [Indexed: 12/14/2022]
Abstract
Pediatric acute lymphoblastic leukemia (ALL) affects a substantial number of children every year and requires a long and rigorous course of chemotherapy treatments in three stages, with the longest phase, the maintenance phase, lasting 2–3 years. While the primary drugs used in the maintenance phase, 6-mercaptopurine (6-MP) and methotrexate (MTX), are necessary for decreasing risk of relapse, they also have potentially serious toxicities, including myelosuppression, which may be life-threatening, and gastrointestinal toxicity. For both drugs, pharmacogenomic factors have been identified that could explain a large amount of the variance in toxicity between patients, and may serve as effective predictors of toxicity during the maintenance phase of ALL treatment. 6-MP toxicity is associated with polymorphisms in the genes encoding thiopurine methyltransferase (TPMT), nudix hydrolase 15 (NUDT15), and potentially inosine triphosphatase (ITPA), which vary between ethnic groups. Moreover, MTX toxicity is associated with polymorphisms in genes encoding solute carrier organic anion transporter family member 1B1 (SLCO1B1) and dihydrofolate reductase (DHFR). Additional polymorphisms potentially associated with toxicities for MTX have also been identified, including those in the genes encoding solute carrier family 19 member 1 (SLC19A1) and thymidylate synthetase (TYMS), but their contributions have not yet been well quantified. It is clear that pharmacogenomics should be incorporated as a dosage-calibrating tool in pediatric ALL treatment in order to predict and minimize the occurrence of serious toxicities for these patients.
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Affiliation(s)
- Shoshana Rudin
- Biological Sciences Division, University of Chicago, Chicago, IL 60637, USA
| | - Marcus Marable
- Biological Sciences Division, University of Chicago, Chicago, IL 60637, USA
| | - R Stephanie Huang
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA.
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18
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Rychlik-Sych M, Barańska M, Dudarewicz M, Skrętkowicz J, Żebrowska A, Owczarek J, Waszczykowska E. ABCB1 gene is associated with the risk of bullous pemphigoid in a polish population. J Dtsch Dermatol Ges 2017; 15:499-505. [PMID: 28207188 DOI: 10.1111/ddg.13182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/10/2016] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND OBJECTIVES Polymorphisms in the P-glycoprotein-encoding ABCB1 gene may affect the intracellular concentration of xenobiotics, and thus contribute to the development of autoimmune diseases, including bullous pemphigoid (BP). The objective of the present study was to investigate whether there is an association between the C3435T and G2677T/A polymorphisms in the ABCB1 gene and the risk of BP in a Polish population. PATIENTS AND METHODS The study included 71 patients with BP and 156 healthy volunteers. Determination of the C3435T polymorphism was carried out using PCR-RFLP; the G2677T/A polymorphism, using allele-specific PCR. RESULTS While there was no correlation between the C3435T polymorphism and the risk of BP, we did find such an association with respect to the G2677T/A polymorphism. The relative risk of BP was more than five times greater in individuals with the 2677TA genotype (OR = 5.52, p = 0.0063), and more than twice as high in carriers of the 2677TT genotype (OR = 2.40, p = 0.0076). At 2.40 (0.000018), the OR in carriers of the 2677T allele was also increased. The greater prevalence of the 2677GG genotype and the 2677G allele in the control group, as well as the OR < 1.0 (0.22 and 0.33, respectively), suggest a protective role of the 2677G allele with respect to the development of BP. CONCLUSIONS The results of the present study indicate that the G2677T/A polymorphism in the ABCB1 gene may affect the risk of developing BP.
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Affiliation(s)
- Mariola Rychlik-Sych
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Małgorzata Barańska
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Michał Dudarewicz
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Jadwiga Skrętkowicz
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Agnieszka Żebrowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology, Medical University of Lodz, Łódź, Poland
| | - Jacek Owczarek
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Elżbieta Waszczykowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology, Medical University of Lodz, Łódź, Poland
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19
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Cuppen BVJ, Pardali K, Kraan MC, Marijnissen ACA, Yrlid L, Olsson M, Bijlsma JWJ, Lafeber FPJG, Fritsch-Stork RDE. Polymorphisms in the multidrug-resistance 1 gene related to glucocorticoid response in rheumatoid arthritis treatment. Rheumatol Int 2017; 37:531-536. [PMID: 28132103 PMCID: PMC5357283 DOI: 10.1007/s00296-017-3653-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/10/2017] [Indexed: 11/27/2022]
Abstract
A substantial proportion of rheumatoid arthritis (RA)-patients experience an insufficient response to glucocorticoids, an important therapeutic agent in RA. The multidrug-resistance 1 (MDR1) gene product P-glycoprotein (P-gp) is an efflux pump that actively transports substrates, such as glucocorticoids, out of the cell. We investigated if the variation in response might be explained by single-nucleotide polymorphisms (SNPs) in the MDR1 gene. RA-patients treated with intravenous methylprednisolone pulses (n = 18) or oral prednisone/prednisolone (n = 22) were included in a prospective cohort, and clinical response was measured after 5 and 30 days, respectively. The C1236T, G2677A/T, and C3435T SNPs were determined, and the functionality of P-gp was assessed by flow cytometry (Rhodamine efflux assay). Carriage of the G2677A/T SNP was significantly associated with response (OR = 6.18, p = 0.035), the other SNPs showed trends. Stratified for received treatment, the effect was only present in methylprednisolone treated patients. Mutant allele carriage significantly decreased functionality of P-gp in B cells, though had a smaller impact in other PBMC subtypes. Carriage of a MDR1 SNP was related to a response to methylprednisolone in this study, which his suggests that RA-patients carrying wild-type alleles might benefit from P-gp inhibition or administration of glucocorticoid analogues that are non-P-gp substrates.
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Affiliation(s)
- Bart V J Cuppen
- Rheumatology and Clinical Immunology, University Medical Center Utrecht, F02.127, 3508 GA, Utrecht, The Netherlands.
| | - Katerina Pardali
- Respiratory and Inflammation iMed, AstraZeneca, Pepparedsleden 1, 431 83, Mölndal, Sweden.
| | - Maarten C Kraan
- Rheumatology and Clinical Immunology, University Medical Center Utrecht, F02.127, 3508 GA, Utrecht, The Netherlands.,Respiratory and Inflammation iMed, AstraZeneca, Pepparedsleden 1, 431 83, Mölndal, Sweden
| | - Anne C A Marijnissen
- Rheumatology and Clinical Immunology, University Medical Center Utrecht, F02.127, 3508 GA, Utrecht, The Netherlands
| | - Linda Yrlid
- Respiratory and Inflammation iMed, AstraZeneca, Pepparedsleden 1, 431 83, Mölndal, Sweden
| | - Marita Olsson
- Respiratory and Inflammation iMed, AstraZeneca, Pepparedsleden 1, 431 83, Mölndal, Sweden
| | - Johannes W J Bijlsma
- Rheumatology and Clinical Immunology, University Medical Center Utrecht, F02.127, 3508 GA, Utrecht, The Netherlands
| | - Floris P J G Lafeber
- Rheumatology and Clinical Immunology, University Medical Center Utrecht, F02.127, 3508 GA, Utrecht, The Netherlands
| | - Ruth D E Fritsch-Stork
- Rheumatology and Clinical Immunology, University Medical Center Utrecht, F02.127, 3508 GA, Utrecht, The Netherlands.,1st Medical Department and Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, Hanusch Hospital, Vienna, Austria.,Sigmund Freud University, Vienna, Austria
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20
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Liu L, Zhou H, Yang J, Sun L. Association of a TNIP1 gene polymorphism with chronic primary immune thrombocytopenia in Chinese population. Meta Gene 2016. [DOI: 10.1016/j.mgene.2016.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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21
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Liu W, Li H, Zhang D, Lv M, Li Y, Hao Y, Chen Y, Liu X, Xue F, Zhang L, Yang R. Effects of the multidrug resistance-1 gene on drug resistance in primary immune thrombocytopenia. Autoimmunity 2016; 49:486-495. [PMID: 27258931 DOI: 10.1080/08916934.2016.1191476] [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] [Indexed: 01/15/2023]
Abstract
Primary immune thrombocytopenia (ITP) is an autoimmune disorder that is characterized by low platelet count. Glucocorticoids (GCs) resistance is a great challenge in the treatment of ITP. P-glycoprotein (P-gp) is a widely studied protein, which is associated with drug resistance. However, in ITP, the functional activity and immune regulation mechanism of P-gp remain uncertain. In this study, we evaluated the expression and functional activity of P-gp in different lymphocyte subsets, explored the correlation between P-gp function and GCs resistance and investigated the role of P-gp in ITP pathogenesis. Results indicated that the functional activity and mRNA level of P-gp were significantly higher in GCs-nonresponsive patients than in GCs-responsive patients with ITP. However, these differences in P-gp were only significant in CD8+ T cells. P-gp function was related to disease activity rather than GCs therapy. P-gp was involved in secreting granzyme B and perforin, maintaining autoreactive lymphocytes survival and enhancing autologous platelets lysis in ITP. In conclusion, over-functional P-gp might play an important role in the pathogenesis of ITP and induce GCs resistance in nonresponsive ITP patients. The blockage of P-gp could be a promising therapeutic approach for GCs-resistant patients with ITP.
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Affiliation(s)
- Wenjie Liu
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Huiyuan Li
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Donglei Zhang
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Mingen Lv
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Yang Li
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Yating Hao
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Yunfei Chen
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Xiaofan Liu
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Feng Xue
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Lei Zhang
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Renchi Yang
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
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Ni Y, Yin G, Xiao Z, Fan L, Wang L, Wu Y, Wu H, Qian S, Xu W, Li J, Miao K, Qiu H. MDR1 polymorphisms have an impact on the prognosis of Chinese diffuse large B cell lymphoma patients. Tumour Biol 2015; 37:1237-44. [DOI: 10.1007/s13277-015-3930-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 08/12/2015] [Indexed: 11/28/2022] Open
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Multidrug resistance 1 (MDR1) 3435C>T gene polymorphism influences the clinical phenotype and methotrexate-induced adverse events in South Indian Tamil rheumatoid arthritis. Eur J Clin Pharmacol 2015; 71:959-65. [DOI: 10.1007/s00228-015-1885-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/03/2015] [Indexed: 01/11/2023]
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Zhou H, Yang J, Liu L, Zhang D, Zhou K, Li H, Zhao H, Han L, Zhou J, Liu X, Song Y, Yang R. The polymorphisms of tumor necrosis factor-induced protein 3 gene may contribute to the susceptibility of chronic primary immune thrombocytopenia in Chinese population. Platelets 2015; 27:26-31. [DOI: 10.3109/09537104.2015.1022142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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El-Beblawy NMS, Elbarbary NS, Kamal TM, Mahmoud PM. A Study of Human Killer Cell Immunoglobulin-Like Receptor and Multidrug Resistance Gene Polymorphisms in Children With Immune Thrombocytopenia. Clin Appl Thromb Hemost 2015; 22:429-40. [PMID: 25792670 DOI: 10.1177/1076029615576738] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
THE OBJECTIVE This study was undertaken to detect characterization of the different gene polymorphisms in Human killer cell immunoglobulin-like receptor (KIR2) gene and multi-drug resistance (MDR1) gene, among childhood ITP Egyptian patients. In addition to assess the potential role of these polymorphisms in relation to types of ITP and response to different treatment modalities. PATIENTS AND METHODS A total of 48 pediatric patients with immune thrombocytopenia (ITP; 24 newly diagnosed and 24 chronic) and 35 healthy controls were investigated via polymerase chain reaction-restriction fragment length polymorphism analysis for multidrug resistance (MDR) 1 and killer cell immunoglobulin-like receptor (KIR) 2 genes. RESULTS The frequency of MDR1 gene in patients and control was not significant (P = .090). The CT genotype was the highest distribution among all ITP cases (62.50%, n = 30) and control (48.60%, n = 17). There was a significant difference in age at diagnosis of MDR1 gene with the CC genotype had the eldest age and lowest initial platelets count (P = .029 and P = .004). The distribution of KIR2 gene among all patients with ITP and controls was significant (P = .026) with (KIRDL2-/KIRDS2-) genotype was the most prevalent among patients. CONCLUSION The frequency of MDR1 polymorphisms was not associated with susceptibility to the development and clinical progression of the disease. However, KIR2 gene polymorphisms were independently associated with childhood ITP in Egyptian patients with highest prevalence among (KIRDL2-/KIRDS2-) genotypes.
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Affiliation(s)
| | - Nancy Samir Elbarbary
- Department of Pediatrics, Hematology and Oncology Unit, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Tarek Mostafa Kamal
- Department of Pediatrics, Human Genetics Unit, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Perehan Mohsen Mahmoud
- Department of Pediatrics, Hematology and Oncology Unit, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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