1
|
Kulin A, Kucsma N, Bohár B, Literáti-Nagy B, Korányi L, Cserepes J, Somogyi A, Sarkadi B, Szabó E, Várady G. Genetic Modulation of the GLUT1 Transporter Expression-Potential Relevance in Complex Diseases. BIOLOGY 2022; 11:1669. [PMID: 36421383 PMCID: PMC9687623 DOI: 10.3390/biology11111669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 12/01/2023]
Abstract
The human GLUT1 (SLC2A1) membrane protein is the key glucose transporter in numerous cell types, including red cells, kidney, and blood-brain barrier cells. The expression level of this protein has a role in several diseases, including cancer and Alzheimer's disease. In this work, to investigate a potential genetic modulation of the GLUT1 expression level, the protein level was measured in red cell membranes by flow cytometry, and the genetic background was analyzed by qPCR and luciferase assays. We found significant associations between red cell GLUT1 levels and four single nucleotide polymorphisms (SNP) in the coding SLC2A1 gene, that in individuals with the minor alleles of rs841848, rs1385129, and rs11537641 had increased, while those having the variant rs841847 had decreased erythrocyte GLUT1 levels. In the luciferase reporter studies performed in HEK-293T and HepG2 cells, a similar SNP-dependent modulation was observed, and lower glucose, serum, and hypoxic condition had variable, cell- and SNP-specific effects on luciferase expression. These results should contribute to a more detailed understanding of the genetic background of membrane GLUT1 expression and its potential role in associated diseases.
Collapse
Affiliation(s)
- Anna Kulin
- Doctoral School of Molecular Medicine, Semmelweis University, 1085 Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Nóra Kucsma
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Balázs Bohár
- Doctoral School of Biology, Eötvös Loránd University, 1117 Budapest, Hungary
| | | | | | | | - Anikó Somogyi
- 2nd Department of Internal Medicine, Semmelweis University, 1088 Budapest, Hungary
| | - Balázs Sarkadi
- Doctoral School of Molecular Medicine, Semmelweis University, 1085 Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Edit Szabó
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - György Várady
- Doctoral School of Molecular Medicine, Semmelweis University, 1085 Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| |
Collapse
|
2
|
Lee DH, Won GW, Lee YH, Ku EJ, Oh TK, Jeon HJ. Associations between the HaeIII Single Nucleotide Polymorphism in the SLC2A1 Gene and Diabetic Nephropathy in Korean Patients with Type 2 Diabetes Mellitus. J Korean Med Sci 2019; 34:e171. [PMID: 31222984 PMCID: PMC6589405 DOI: 10.3346/jkms.2019.34.e171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 05/30/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Diabetic nephropathy (DN) is the most serious microvascular complication of diabetes mellitus and is one of the leading causes of end stage renal failure. In previous studies, the contribution of genetic susceptibility to DN showed inconsistent results. In this study, we investigated the association between the solute carrier family 2 facilitated glucose transporter member 1 (SLC2A1) HaeIII polymorphism and DN in Korean patients with type 2 diabetes mellitus (T2DM) according to disease duration. METHODS A total of 846 patients with T2DM (mean age, 61.3 ± 12.3 years; mean duration of T2DM, 10.3 ± 7.9 years; 55.3% men) who visited the Chungbuk National University Hospital were investigated. The HaeIII polymorphism of the SLC2A1 gene was determined by the real time polymerase chain reaction method. Genotyping results were presented as GG, AG, or AA. A subgroup analysis was performed according to duration of T2DM (≤ 10 years, > 10 years). RESULTS The AG + AA genotype showed a significantly higher risk of DN compared with the GG genotype in patients with a type 2 DM duration less than 10 years (12.4% vs. 4.2%; P < 0.001). No significant differences were observed in terms of other diabetic complications, including retinopathy, peripheral neuropathy, cardiovascular disease, cerebrovascular disease or peripheral artery disease, according to the genotypes of the SLC2A1 HaeIII polymorphism. CONCLUSION The SLC2A1 HaeIII polymorphism was associated with DN in Korean patients with T2DM, particularly in the group with a relatively short disease duration.
Collapse
Affiliation(s)
- Dong Hwa Lee
- Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Gun Woo Won
- Department of Biochemistry, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Yong Hee Lee
- Department of Biochemistry, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Eu Jeong Ku
- Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Tae Keun Oh
- Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Hyun Jeong Jeon
- Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea.
| |
Collapse
|
3
|
Stefanidis I, Tziastoudi M, Tsironi EE, Dardiotis E, Tachmitzi SV, Fotiadou A, Pissas G, Kytoudis K, Sounidaki M, Ampatzis G, Mertens PR, Liakopoulos V, Eleftheriadis T, Hadjigeorgiou GM, Santos M, Zintzaras E. The contribution of genetic variants of SLC2A1 gene in T2DM and T2DM-nephropathy: association study and meta-analysis. Ren Fail 2018; 40:561-576. [PMID: 30353771 PMCID: PMC6201811 DOI: 10.1080/0886022x.2018.1496931] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 06/15/2018] [Accepted: 06/28/2018] [Indexed: 12/22/2022] Open
Abstract
An association study was conducted to investigate the relation between 14 variants of glucose transporter 1 gene (SLC2A1) and the risk of type 2 diabetes (T2DM) leading to nephropathy. We also performed a meta-analysis of 11 studies investigating association between diabetic nephropathy (DN) and SLC2A1 variants. The cohort included 197 cases (T2DM with nephropathy), 155 diseased controls (T2DM without nephropathy) and 246 healthy controls. The association of variants with disease progression was tested using generalized odds ratio (ORG). The risk of type 2 diabetes leading to nephropathy was estimated by the OR of additive and co-dominant models. The mode of inheritance was assessed using the degree of dominance index (h-index). We synthesized results of 11 studies examining association between 5 SLC2A1 variants and DN. ORG was used to assess the association between variants and DN using random effects models. Significant results were derived for co-dominant model of rs12407920 [OR = 2.01 (1.17-3.45)], rs841847 [OR = 1.73 (1.17-2.56)] and rs841853 [OR = 1.74 (1.18-2.55)] and for additive model of rs3729548 [OR = 0.52 (0.29-0.90)]. The mode of inheritance for rs12407920, rs841847 and rs841853 was 'dominance of each minor allele' and for rs3729548 'non-dominance'. Frequency of one haplotype (C-G-G-A-T-C-C-T-G-T-C-C-A-G) differed significantly between cases and healthy controls [p = .014]. Regarding meta-analysis, rs841853 contributed to an increased risk of DN [(ORG = 1.43 (1.09-1.88); ORG = 1.58 (1.01-2.48)] between diseased controls versus cases and healthy controls versus cases, respectively. Further studies confirm the association of rs12407920, rs841847, rs841853, as well as rs3729548 and the risk of T2DM leading to nephropathy.
Collapse
Affiliation(s)
- I. Stefanidis
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - M. Tziastoudi
- Department of Biomathematics, University of Thessaly School of Medicine, Larissa, Greece
| | - E. E. Tsironi
- Department of Ophthalmology, University of Thessaly School of Medicine, Larissa, Greece
| | - E. Dardiotis
- Department of Neurology, University of Thessaly School of Medicine, Larissa, Greece
| | - S. V. Tachmitzi
- Department of Ophthalmology, University of Thessaly School of Medicine, Larissa, Greece
| | - A. Fotiadou
- Department of Ophthalmology, University of Thessaly School of Medicine, Larissa, Greece
| | - G. Pissas
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - K. Kytoudis
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - M. Sounidaki
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - G. Ampatzis
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - P. R. Mertens
- Department of Nephrology, Hypertension, Diabetes and Endocrinology, School of Medicine, University of Magdeburg, Magdeburg, Germany
| | - V. Liakopoulos
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - T. Eleftheriadis
- Department of Nephrology, University of Thessaly School of Medicine, Larissa, Greece
| | - G. M Hadjigeorgiou
- Department of Neurology, University of Thessaly School of Medicine, Larissa, Greece
| | - M. Santos
- Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - E. Zintzaras
- Department of Biomathematics, University of Thessaly School of Medicine, Larissa, Greece
- The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| |
Collapse
|
4
|
Glucose transporter 1( GLUT1 ) gene frequency distribution of Xba IG > T and Hae IIIT > C polymorphisms among different West Indian patients with type 2 diabetes mellitus. GENE REPORTS 2017. [DOI: 10.1016/j.genrep.2016.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
5
|
Amini S, Javanmardi M, Mokarizadeh A, Maroofi F, Jalali C, Azadi NA, Mohammadi H, Abdi M. Association of HaeIII single nucleotide polymorphisms in the SLC2A1 gene with risk of diabetic nephropathy; evidence from Kurdish patients with type 2 diabetes mellitus. QJM 2016; 109:399-404. [PMID: 26337659 DOI: 10.1093/qjmed/hcv149] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
AIMS Given the growing rate of patients with type 2 diabetes mellitus, uncovering the effects of gene polymorphism on diabetes pathogenesis has attracted a lot of attention. Because glucose transporter 1 is involved in glucose uptake, the polymorphism of this gene may be an important risk factor in type 2 diabetes mellitus or in the progression of diabetes complications such as diabetic nephropathy. As far as the authors are concerned, this study is the first one aiming at evaluating the probable effects of solute carrier family 2 facilitated glucose transporter member 1 (SLC2A1) HaeIII polymorphism on clinical and laboratory outcomes of Kurdish patients with type 2 diabetes mellitus. METHODS This study was conducted involving 126 diabetic nephropathy patients and 150 diabetic patients without renal involvement. Serum levels of Cystatin C, fasting blood glucose, creatinine and urinary albumin; levels of glycated hemoglobin and estimated glomerular filtration rate were measured. Moreover, the Hae III polymorphism of SLC2A1 gene was determined by PCR-restriction fragment length polymorphism (RFLP). RESULTS The rate of CC genotype was higher (37%) in patients with diabetic nephropathy compared with controls. There were a significant correlation between the CC genotype and risk of diabetic nephropathy. There were significant correlations between genotypes, serum Cystatin C and estimated glomerular filtration rate in patients with diabetic nephropathy. CONCLUSIONS The results demonstrated the high frequency of C allele of SLC2A1 HaeIII in Kurdish patients with diabetic nephropathy. It was also found that this polymorphism is a significant risk factor for diabetic nephropathy. The effect of this polymorphism on clinical and laboratory characteristics of diabetic nephropathy patients was significant.
Collapse
Affiliation(s)
| | - Mitra Javanmardi
- Department of Biochemistry, College of Science, Kurdistan and Research Branch, Islamic Azad University
| | | | - Farzad Maroofi
- Department of Biochemistry, College of Science, Kurdistan and Research Branch, Islamic Azad University
| | - Chiya Jalali
- Department of Biochemistry, College of Science, Kurdistan and Research Branch, Islamic Azad University
| | - Namam-Ali Azadi
- Department of Epidemiology and Biostatistics, Faculty of Medicine, Kurdistan University of Medical Sciences
| | - Hamid Mohammadi
- Laboratory of Health Center, State Prisons and Security and Corrective Measures Organization and
| | - Mohammad Abdi
- Cellular and Molecular Research Center and Department of Clinical Biochemistry, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| |
Collapse
|
6
|
Osadnik T, Strzelczyk J, Bujak K, Reguła R, Wasilewski J, Fronczek M, Kurek A, Gawlita M, Gonera M, Gierlotka M, Lekston A, Hawranek M, Myrda K, Wiczkowski A, Ostrowska Z, Gąsior M, Poloński L. Functional polymorphism rs710218 in the gene coding GLUT1 protein is associated with in-stent restenosis. Biomark Med 2015; 9:743-50. [DOI: 10.2217/bmm.15.36] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Aim: To analyze the association between in-stent restenosis (ISR) and polymorphisms in genes coding IGF-1, IGFBP3, ITGB3 and GLUT1, which play an important role in the smooth muscle cell proliferation and extracellular matrix synthesis – the main components of neointima. Materials & methods: We analyzed 265 patients who underwent bare metal stent implantation. Results: The differences in the occurrence of ISR between genotypes of the analyzed polymorphisms in the IGF-1, IGFBP3 and ITGB3 were not statistically significant. The T/T genotype of the rs710218 polymorphism in the GLUT1 (SLC2A1) gene was more common in the ISR group compared with non-ISR patients (81.1 vs 64.8%; p = 0.02). In a multivariable model the A/A and A/T genotype remained correlated with lower occurrence of ISR (odds ratio: 0.45; 95% CI: 0.21–0.97; p = 0.03). Conclusion: The rs710218 polymorphism in the gene coding GLUT1 protein is a novel risk factor for ISR.
Collapse
Affiliation(s)
- Tadeusz Osadnik
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Joanna Strzelczyk
- Medical University of Silesia, School of Medicine with the Division of Dentistry, Department of Medical and Molecular Biology, Jordana Street 19, 41-808 Zabrze, Poland
| | - Kamil Bujak
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Rafał Reguła
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Jarosław Wasilewski
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Martyna Fronczek
- Medical University of Silesia, School of Medicine with the Division of Dentistry, Department of Medical and Molecular Biology, Jordana Street 19, 41-808 Zabrze, Poland
| | - Anna Kurek
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Marcin Gawlita
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Małgorzata Gonera
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Marek Gierlotka
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Andrzej Lekston
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Michał Hawranek
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Krzysztof Myrda
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Andrzej Wiczkowski
- Medical University of Silesia, School of Medicine with the Division of Dentistry, Department of Medical and Molecular Biology, Jordana Street 19, 41-808 Zabrze, Poland
| | - Zofia Ostrowska
- Medical University of Silesia, School of Medicine with the Division of Dentistry, Department of Medical and Molecular Biology, Jordana Street 19, 41-808 Zabrze, Poland
| | - Mariusz Gąsior
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| | - Lech Poloński
- Medical University of Silesia, School of Medicine with the Division of Dentistry, 3rd Department of Cardiology, Silesian Centre for Heart Diseases, Marii Skłodowskiej Curie Street 9, 41-800 Zabrze, Poland
| |
Collapse
|
7
|
Cui W, Du B, Zhou W, Jia Y, Sun G, Sun J, Zhang D, Yuan H, Xu F, Lu X, Luo P, Miao L. Relationship between five GLUT1 gene single nucleotide polymorphisms and diabetic nephropathy: a systematic review and meta-analysis. Mol Biol Rep 2012; 39:8551-8. [PMID: 22707195 DOI: 10.1007/s11033-012-1711-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Accepted: 06/06/2012] [Indexed: 12/20/2022]
Abstract
So far, case-control studies on the association between glucose transporter 1 (GLUT1) gene single nucleotide polymorphisms (SNPs) and diabetic nephropathy (DN) have generated considerable controversy. To clarify the linkage of GLUT1 SNPs on the risk of DN, a systematic review and meta-analysis was performed. A comprehensive literature search of electronic databases was conducted to obtain relative studies. Nine case-control studies were included. Significant differences were found between XbaI SNP (rs841853) and increased risk of DN in all genetic models. Subgroup analyses for Caucasians population and DN from both type 1 and type 2 diabetes also revealed positive results. For Enh2-1 SNP (rs841847), Enh2-2 SNP (rs841848) and HaeIII SNP (rs1385129), obvious linkages were demonstrated in recessive model. However, analysis for the association between HpyCH4V SNP (rs710218) and the susceptibility of DN showed no significance. Likewise, negative outcome was also found in the assessment for the influence of XbaI or Enh2-2 SNP on the pathogenesis progress of DN. The evidence currently available shows that XbaI, Enh2 and HaeIII SNPs, but not HpyCH4V SNP, in GLUT1 gene may be genetic susceptibility to DN. However, data does not support the association between either XbaI or Enh2-2 SNP and the severity of DN.
Collapse
Affiliation(s)
- Wenpeng Cui
- Department of Nephrology, Second Hospital, Jilin University, 218 Ziqiang Street, Changchun 130041, Jilin, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Jayapalan JJ, Muniandy S, Chan SP. Null association between ACE gene I/D polymorphism and diabetic nephropathy among multiethnic Malaysian subjects. INDIAN JOURNAL OF HUMAN GENETICS 2011; 16:78-86. [PMID: 21031056 PMCID: PMC2955956 DOI: 10.4103/0971-6866.69351] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND: Wide inter-ethnic allelic variations of the Angiotensin Converting Enzyme (ACE) i nsertion-deletion (I/D) gene polymorphism were thought to be responsible for the conflicting gene–diabetic nephropathy disease association worldwide. We have investigated the genetic susceptibility of the ACE gene to diabetic nephropathy in the multiethnic Malaysian population. MATERIALS AND METHODS: A total of 137 healthy (control) and 256 diabetic subjects were recruited. The diabetic subjects were further subdivided according to their nephropathy status based on urinary albumin-creatinine ratio (ACR) and glomerular filtration rate (GFR). Triple primer polymerase chain reaction (PCR) was used for ACE I/D genotyping. Subsequently, populationwide genetic analysis and gene-disease association studies were performed. RESULTS: The genotype frequencies in all subgroups were in Hardy-Weinberg equilibrium. Similar allelic and genotypic frequency of ACE I/D gene polymorphism was observed between healthy controls versus pooled type 2 diabetes mellitus (T2DM) subjects, and normoalbuminuria versus microalbuminuria, macroalbuminuria and End Stage Renal Failure (ESRF) (P > 0.05). Neither ethnicity nor gender exerted any influence on the ACE I/D gene polymorphism (P > 0.05), with the exception of the Chinese ethnic group which exhibited a higher frequency of ID genotype (P = 0.042). A multinomial logistic regression model showed that predictive factors including age, systolic blood pressure (SBP), high density lipoprotein (HDL) and glycosylated hemoglobin (HbA1C) were independently associated with diabetic nephropathy, in that order. CONCLUSION: The I/D polymorphism of the ACE gene is not significantly associated with both T2DM and/or diabetic nephropathy in this Malaysian population regardless of ethnicity and gender.
Collapse
Affiliation(s)
- Jaime J Jayapalan
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | | |
Collapse
|
9
|
Hsu CC, Kao WL, Steffes MW, Gambir T, Brancati FL, Heilig CW, Shuldiner AR, Boerwinkle EA, Coresh J. Genetic variation of glucose transporter-1 (GLUT1) and albuminuria in 10,278 European Americans and African Americans: a case-control study in the Atherosclerosis Risk in Communities (ARIC) study. BMC MEDICAL GENETICS 2011; 12:16. [PMID: 21247498 PMCID: PMC3034664 DOI: 10.1186/1471-2350-12-16] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Accepted: 01/19/2011] [Indexed: 11/10/2022]
Abstract
Background Evidence suggests glucose transporter-1(GLUT1) genetic variation affects diabetic nephropathy and albuminuria. Our aim was to evaluate associations with albuminuria of six GLUT1 single nucleotide polymorphisms(SNPs), particularly XbaI and the previously associated Enhancer-2(Enh2) SNP. Methods A two-stage case-control study was nested in a prospective cohort study of 2156 African Americans and 8122 European Americans with urinary albumin-to-creatinine ratio(ACR). Cases comprised albuminuria(N = 825; ≥ 30 μg/mg) and macroalbuminuria(N = 173; ≥ 300 μg/mg). ACR < 30 μg/mg classified controls(n = 9453). Logistic regression and odds ratios(OR) assessed associations. The evaluation phase(stage 1, n = 2938) tested associations of albuminuria(n = 305) with six GLUT1 SNPs: rs841839, rs3768043, rs2297977, Enh2(rs841847) XbaI(rs841853), and rs841858. Enh2 was examined separately in the replication phase(stage 2, n = 7340) and the total combined sample (n = 10,278), with all analyses stratified by race and type 2 diabetes. Results In European Americans, after adjusting for diabetes and other GLUT1 SNPs in stage 1, Enh2 risk genotype(TT) was more common in albuminuric cases(OR = 3.37, P = 0.090) whereas XbaI (OR = 0.94, p = 0.931) and remaining SNPs were not. In stage 1, the Enh2 association with albuminuria was significant among diabetic European Americans(OR = 2.36, P = 0.025). In African Americans, Enh2 homozygosity was rare(0.3%); XbaI was common(18.0% AA) and not associated with albuminuria. In stage 2(n = 7,340), Enh2 risk genotype had increased but non-significant OR among diabetic European Americans(OR = 1.66, P = 0.192) and not non-diabetics(OR = 0.99, p = 0.953), not replicating stage 1. Combining stages 1 and 2, Enh2 was associated with albuminuria(OR 2.14 [1.20-3.80], P = 0.009) and macroalbuminuria(OR 2.69, [1.02-7.09], P = 0.045) in diabetic European Americans. The Enh2 association with macroalbuminuria among non-diabetic European Americans with fasting insulin(OR = 1.84, P = 0.210) was stronger at the highest insulin quartile(OR = 4.08, P = 0.040). Conclusions As demonstrated with type 1 diabetic nephropathy, the GLUT1 Enh2 risk genotype, instead of XbaI, may be associated with type 2 diabetic albuminuria among European Americans, though an association is not conclusive. The association among diabetic European Americans found in stage 1 was not replicated in stage 2; however, this risk association was evident after combining all diabetic European Americans from both stages. Additionally, our results suggest this association may extend to non-diabetics with high insulin concentrations. Rarity of the Enh2 risk genotype among African Americans precludes any definitive conclusions, although data suggest a risk-enhancing role.
Collapse
Affiliation(s)
- Charles C Hsu
- Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Frequency distribution of XbaIG > T and HaeIIIT > C GLUT1 polymorphisms among different Brazilian ethnic groups. Mol Biol Rep 2009; 37:75-9. [PMID: 19347605 DOI: 10.1007/s11033-009-9528-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Accepted: 03/20/2009] [Indexed: 01/25/2023]
Abstract
GLUT is the major glucose transporter in mammalian cells. Single nucleotide polymorphisms (SNP) at GLUT1 promoter and regulatory regions have been associated to the risk of developing nephropathy in different type 1 and type 2 diabetic populations. It has been demonstrated that differences in allelic and genotypic frequencies of GLUT1 gene (SLC2A1) polymorphisms occur among different populations. Therefore, ethnic differences in distribution of GLUT1 gene polymorphisms may be an important factor in determining gene-disease association. In this study, we investigated the XbaIG > T and HaeIIIT > C polymorphisms in six different Brazilian populations: 102 individuals from Salvador population (Northern Brazil), 56 European descendants from Joinville (South Brazil), 85 Indians from Tiryió tribe (North Brazil) and 127 samples from Southern Brazil: 44 from European descendants, 42 from African descendants and 41 from Japanese descendants. Genotype frequencies from both sites did not differ significantly from those expected under the Hardy-Weinberg equilibrium. We verified that the allele frequencies of both polymorphisms were heterogeneous in these six Brazilian ethnic groups.
Collapse
|