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Zeng H, Tang C, Lin B, Yu M, Wang X, Wang J, Chen S, Yu C. The regulation effect of GLUT9/SLC2A9 on intrahepatic uric acid level and metabolic associated fatty liver disease. Hepatol Int 2022; 16:1064-1074. [PMID: 36006548 DOI: 10.1007/s12072-022-10371-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/22/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Metabolic associated fatty liver disease (MAFLD) is the most common chronic liver disease worldwide. The important role of urid acid (UA) in MAFLD has been widely investigated. Our previous studies unveiled the elevation of serum UA levels independently predicts an increased risk of incident MAFLD. However, the role of intrahepatic UA in MAFLD has not been investigated yet. Glucose transporter 9 (GLUT9) is a key transporter that mediates the uptake of UA in hepatocytes. METHODS In this study, we first explored the clinical association between GLUT9 polymorphism and MAFLD. Blood samples of 247 male Chinese (127 were MAFLD patients) were collected and tested for the blood UA levels and genotype of the single nucleotide polymorphism (SNP) of GLUT9 (rs1014290). Next, Glut9 hepatic-specific knockout mice (Glut9Hep-ko) were generated to investigate the role of hepatic GLUT9 in MAFLD in male mice. RESULTS We found that the GA/AA genotypes (rs1014290) were associated with elevated serum UA levels in MAFLD patients. Meanwhile, we found that Glut9Hep-ko mice displayed lower intrahepatic UA levels, down-regulated lipogenesis genes expressions, and attenuated MAFLD symptoms after 12 weeks of high-fat diet feeding, compared with Glut9Fl/Fl littermates. However, Glut9Hep-ko mice and wild-type littermates showed no significant difference on hepatic fatty acid oxidation or inflammation. CONCLUSIONS Our results suggested that GLUT9 polymorphism was significantly associated with MAFLD, and hepatic-specific knockout of Glut9 significantly decreased intrahepatic contents and ameliorated diet-induced MAFLD in mice.
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Affiliation(s)
- Hang Zeng
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Chenxi Tang
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Bingru Lin
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Mengli Yu
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xinyu Wang
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jinghua Wang
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Shenghui Chen
- Department of Gastroenterology, School of Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University, Hangzhou, 310003, China
| | - Chaohui Yu
- Department of Gastroenterology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
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Ramdhan RS, Hade NA, Algafari RN. Association of multiple SNPs at slc2a9 exon 8 in gout disease in Iraqi population: A molecular study. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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3
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Ma Q, Fang L, Su R, Ma L, Xie G, Cheng Y. Uric acid stones, clinical manifestations and therapeutic considerations. Postgrad Med J 2018; 94:458-462. [PMID: 30002092 DOI: 10.1136/postgradmedj-2017-135332] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 04/07/2018] [Accepted: 05/02/2018] [Indexed: 12/23/2022]
Abstract
Uric acid stones account for 10%-15% of all urinary stones. Changes in dietary habits, environment or both can result in the increase of uric acid stones. The formation of uric acid stones is related to hyperuricosuria, low urinary volume and persistently low urinary pH. Diabetes and obesity also significantly increase the risk of stone formation. Dual-energy CT provides a convenient and reliable method for diagnosis. Stone composition analysis and 24-hour urine metabolic evaluations should be considered for further evaluation. Most small uric acid stones (diameter <2 cm) can be treated by pharmacotherapy or extracorporeal shock wave lithotripsy. However, ureteroscopy and other minimally invasive procedures should be reserved for larger stones (diameter ≥2 cm), or patients with concomitant urinary tract obstruction and/or infections. Additionally, adjustment of potential pathophysiologic defects by pharmacotherapy and dietary modification is strongly recommended for the prevention of uric stone recurrence.
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Affiliation(s)
- Qi Ma
- Department of Urology, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China.,Translational Research Laboratory for Urology, the Key Laboratory of Ningbo City, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China
| | - Li Fang
- Department of Urology, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China
| | - Rui Su
- Department of Urology, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China
| | - Liang Ma
- Translational Research Laboratory for Urology, the Key Laboratory of Ningbo City, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China
| | - Guohai Xie
- Department of Urology, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China
| | - Yue Cheng
- Department of Urology, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China.,Translational Research Laboratory for Urology, the Key Laboratory of Ningbo City, Ningbo First Hospital, The Affiliated Hospital of Ningbo University, Ningbo, China
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Ruiz A, Gautschi I, Schild L, Bonny O. Human Mutations in SLC2A9 (Glut9) Affect Transport Capacity for Urate. Front Physiol 2018; 9:476. [PMID: 29967582 PMCID: PMC6016318 DOI: 10.3389/fphys.2018.00476] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/16/2018] [Indexed: 01/17/2023] Open
Abstract
SLC2A9 or Glut9 is a voltage sensitive urate transporter, mainly expressed in the kidneys, the liver, and the intestine. Human Glut9 loss-of-function mutations were identified in familial hypouricemia, and several single nucleotide polymorphisms (SNPs) were associated with lower serum urate, further indicating that Glut9 is a major determinant of serum uric acid level. To get insights in Glut9 transport characteristics, we systematically analyzed the function of known human Glut9 mutants using 14C-urate uptake assay and two-electrode voltage clamp (TEVC) in the Xenopus laevis oocyte expression system. Surface expression was assessed by immunostaining and biotinylation. We found decreased urate transport by flux studies for most of the variants. No variant was permissive for glucose transport. We could further differentiate two behaviors among the mutants: those harboring poor overall and cell-surface expression leading to low activity and those fully expressed at the cell surface, but presenting decreased activity. We studied the latter by TEVC and observed, in depolarized conditions, decreased inward currents measured in presence of 400 μM urate, partially reversed in 1 mM urate. In addition, we showed that C210F displays lower transport ability. By contrast, N333S showed decreased urate transport activity and urate affinity, suggesting that it may belong to the urate binding pocket. Systematic analysis of Glut9 mutants confirms Glut9 as putative target for the treatment of hyperuricemia and brings new insights in Glut9 structure – function.
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Affiliation(s)
- Anne Ruiz
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
| | - Ivan Gautschi
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
| | - Laurent Schild
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
| | - Olivier Bonny
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland.,Service of Nephrology, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
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Association between SLC2A9 (GLUT9) gene polymorphisms and gout susceptibility: an updated meta-analysis. Rheumatol Int 2016; 36:1157-65. [DOI: 10.1007/s00296-016-3503-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 05/24/2016] [Indexed: 10/21/2022]
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Ware EB, Riehle E, Smith JA, Zhao W, Turner ST, Kardia SLR, Lieske JC. SLC2A9 Genotype Is Associated with SLC2A9 Gene Expression and Urinary Uric Acid Concentration. PLoS One 2015; 10:e0128593. [PMID: 26167684 PMCID: PMC4500555 DOI: 10.1371/journal.pone.0128593] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 04/28/2015] [Indexed: 12/17/2022] Open
Abstract
Objectives SLC2A9 gene variants have been associated with urinary uric acid (UA) concentration, but little is known about the functional mechanism linking these gene variants with UA. SLC2A9 encodes a UA transporter present in the proximal tubule of the kidney, and gene expression levels of SLC2A9 and other genes in the uricosuric pathway (ABCG2, SLC17A1, SLC17A3, and SLC22A12) could potentially mediate the relationship between SLC2A9 gene variants and urinary UA excretion. Methods The association between urinary UA concentrations and single nucleotide polymorphisms (SNPs) within the SLC2A9 gene region, expression levels of genes in the uricosuric pathway, and dietary protein intake were analyzed for a sample of non-Hispanic white participants from the Genetic Epidemiology Network of Arteriopathy (GENOA) cohort. The SLC2A9 SNP most significantly associated with urinary UA concentration was then tested for associations with gene expression levels from uric acid absorption/secretion associated genes. Models including interactions between dietary protein (total, animal, and vegetable) and genetic factors were also assessed. Results The most significant SLC2A9 SNP associated with urinary UA (rs12509955, corrected p = 0.001) was also associated with SLC2A9 gene expression levels (corrected p = 0.0084); however, SLC2A9 gene expression levels were not significantly associated with urinary UA concentrations (p = 0.509). The interactions between rs12509955 and total dietary protein, and SLC2A9 gene-level gene expression and dietary vegetable protein on the outcome of urinary UA were marginally significant (p = 0.11 and p = 0.07, respectively). Gene expression level of one SLC2A9 transcript had a significant interaction with dietary animal protein (SLC2A9-001 ENST00000506583, p = 0.01) and a marginally significant interaction with total dietary protein (p = 0.07) on urinary UA. Conclusion Our results illustrate that SNPs in the SLC2A9 gene influence SLC2A9 gene expression as well as urinary UA excretion. Evidence is also suggestive that gene-by-diet interactions may disproportionately increase urinary UA in genetically susceptible individuals that consume higher amounts of protein.
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Affiliation(s)
- Erin B. Ware
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
- Institute for Social Research, University of Michigan, Ann Arbor, MI, United States of America
| | - Ellen Riehle
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Jennifer A. Smith
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Wei Zhao
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Stephen T. Turner
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, United States of America
| | - Sharon L. R. Kardia
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
- * E-mail:
| | - John C. Lieske
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, United States of America
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States of America
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Li C, Chu N, Wang B, Wang J, Luan J, Han L, Meng D, Wang Y, Suo P, Cheng L, Ma X, Miao Z, Liu S. Polymorphisms in the presumptive promoter region of the SLC2A9 gene are associated with gout in a Chinese male population. PLoS One 2012; 7:e24561. [PMID: 22393348 PMCID: PMC3290627 DOI: 10.1371/journal.pone.0024561] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 08/15/2011] [Indexed: 01/05/2023] Open
Abstract
Background Glucose transporter 9 (GLUT9) is a high-capacity/low-affinity urate transporter. To date, several recent genome-wide association studies (GWAS) and follow-up studies have identified genetic variants of SLC2A9 associated with urate concentrations and susceptibility to gout. We therefore investigated associations between gout and polymorphisms and haplotypes in the presumptive promoter region of GLUT9 in Chinese males. Methodology/Principal Findings The approximately 2000 bp presumptive promoter region upstream of the start site of exon 1 of GLUT9 was sequenced and subjected to genetic analysis. A genotype-phenotype correlation was performed and polymorphisms-induced changes in transcription factor binding sites were predicted. Of 21 SNPs identified in GLUT9, five had not been previously reported. Two of the SNPs (rs13124007 and rs6850166) were associated with susceptibility to gout (p = 0.009 and p = 0.042, respectively). The C allele of rs13124007 appeared to be the risk allele for predisposition to gout (p = 0.006, OR 1.709 [95% CI 1.162–2.514]). For rs6850166, an increased risk of gout was associated with the A allele (p = 0.029, OR 1.645 [95% CI 1.050–2.577]). After Bonferroni correction, there was statistically difference in rs13124007 allele frequencies between gout cases and controls (P = 0.042). Haplotype analyses showed that haplotype GG was a protective haplotype (p = 0.0053) and haplotype CA was associated with increased risk of gout (p = 0.0326). Genotype-phenotype analysis among gout patients revealed an association of rs13124007 with serum triglycerides levels (P = 0.001). The C to G substitution in polymorphism rs13124007 resulted in a loss of a binding site for transcription factor interferon regulatory factor 1 (IRF-1). Conclusions/Significance Polymorphisms rs13124007 and rs6850166 are associated with susceptibility to gout in Chinese males.
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Affiliation(s)
- Changgui Li
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
- * E-mail: (CL); (SL)
| | - Nan Chu
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Binbin Wang
- Graduate school, Peking Union Medical College, Beijing, China
- National Research Institute for Family Planning, Beijing, China
| | - Jing Wang
- Graduate school, Peking Union Medical College, Beijing, China
- National Research Institute for Family Planning, Beijing, China
| | - Jian Luan
- Qingdao Municipal Hospital, Qingdao, China
| | - Lin Han
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Dongmei Meng
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Yunlong Wang
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Peisu Suo
- Graduate school, Peking Union Medical College, Beijing, China
- National Research Institute for Family Planning, Beijing, China
| | - Longfei Cheng
- Graduate school, Peking Union Medical College, Beijing, China
- National Research Institute for Family Planning, Beijing, China
| | - Xu Ma
- Graduate school, Peking Union Medical College, Beijing, China
- National Research Institute for Family Planning, Beijing, China
- World Health Organization Collaborating Centre for Research in Human Reproduction, Beijing, China
| | - Zhimin Miao
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Shiguo Liu
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
- * E-mail: (CL); (SL)
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Chung SD, Chen YK, Lin HC. Increased risk of diabetes in patients with urinary calculi: a 5-year followup study. J Urol 2011; 186:1888-93. [PMID: 21944094 DOI: 10.1016/j.juro.2011.07.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Indexed: 12/31/2022]
Abstract
PURPOSE No prospective followup study to date to our knowledge has evaluated the relationship between stone disease and the subsequent risk of diabetes mellitus. In this population based study we examine the relationship between a history of urinary calculi and the risk of diabetes mellitus in Taiwan. MATERIALS AND METHODS A total of 23,569 adult patients with new diagnoses of urinary calculi from 2001 to 2003 were recruited together with 70,707 matched enrollees as a comparison cohort. All patients were tracked for a 5-year period from the index health care encounter to identify those who had a subsequent diagnosis of diabetes mellitus. Cox proportional hazards models were used to compute the risk of diabetes mellitus for the study and comparison cohorts. RESULTS Of a total of 94,276 patients 2,921 (12.39%) from the urinary calculi group and 6,171 (8.73%) from the comparison group received a subsequent diagnosis of diabetes mellitus during the followup period. The stratified Cox proportional analysis showed that, after censoring individuals who died during followup, and adjusting for patient monthly income, geographic location, urbanization level, hypertension, hyperlipidemia and obesity, the hazard of receiving a first diagnosis of diabetes during the 5-year followup was 1.32 times greater for patients with urinary calculi than for those in the comparison cohort (95% CI 1.26-1.39, p <0.001). CONCLUSIONS Our results suggest that patients who receive a diagnosis of urinary calculi are at increased risk for diabetes mellitus at 5-year followup.
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Affiliation(s)
- Shiu-Dong Chung
- Division of Urology, Department of Surgery, Far Eastern Memorial Hospital, Ban Ciao, Taipei, Taiwan
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Chou YH, Juo SHH, Chiu YC, Liu ME, Chen WC, Chang CC, Chang WP, Chang JG, Chang WC. A Polymorphism of the
ORAI1
Gene is Associated With the Risk and Recurrence of Calcium Nephrolithiasis. J Urol 2011; 185:1742-6. [PMID: 21420116 DOI: 10.1016/j.juro.2010.12.094] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Indexed: 10/18/2022]
Affiliation(s)
- Yii-Her Chou
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
- Department of Urology, College of Medicine, Kaohsiung, Taiwan, Republic of China
| | - Suh-Hang Hank Juo
- Department of Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
- Department of Medical Genetics, College of Medicine, Kaohsiung, Taiwan, Republic of China
| | - Yi-Ching Chiu
- Department of Medical Genetics, College of Medicine, Kaohsiung, Taiwan, Republic of China
| | - Mu-En Liu
- Department of Medical Genetics, College of Medicine, Kaohsiung, Taiwan, Republic of China
| | - Wei-Chiao Chen
- Department of Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
- Department of Medical Genetics, College of Medicine, Kaohsiung, Taiwan, Republic of China
- Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
| | - Chen-Chia Chang
- Department of Medical Genetics, College of Medicine, Kaohsiung, Taiwan, Republic of China
| | - Wei-Pin Chang
- Department of Healthcare Management, Yuanpei University, HsinChu, Taiwan, Republic of China
| | - Jan-Gowth Chang
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
- Department of Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
- Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
| | - Wei-Chiao Chang
- Department of Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
- Department of Medical Genetics, College of Medicine, Kaohsiung, Taiwan, Republic of China
- Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
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The rs1014290 polymorphism of the SLC2A9 gene is associated with type 2 diabetes mellitus in Han Chinese. EXPERIMENTAL DIABETES RESEARCH 2011; 2011:527520. [PMID: 21584282 PMCID: PMC3092507 DOI: 10.1155/2011/527520] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 02/22/2011] [Accepted: 02/23/2011] [Indexed: 11/18/2022]
Abstract
Aims. The SLC2A9 gene encodes the glucose transporter 9, with the abilities of transporting both glucose and uric acid and is involved in the pancreatic glucose-stimulated insulin secretion. The single nucleotide polymorphisms (SNPs) of SLC2A9 accounted for 5% variance of serum uric acid (UA). UA was identified as a risk factor for type 2 diabetes mellitus (DM). We investigated whether the SLC2A9 gene variations are associated with type 2 DM in Han Chinese.
Methods. Three common SNPs of the SLC2A9, rs1014290, rs2280205, and rs3733591, were genotyped in 1003 Han Chinese randomly selected from Kaohsiung, Taiwan.
Results. The variant SNP rs1014290 is associated with decreased 0.12-fold risk of type 2 DM (P = .002). Per-copy increase in the minor C-allele results in 0.13 mmol/L (P = .037) and 10.03 μmol/L (P = .016) decrease in serum glucose and UA, respectively.
Conclusions. The SNP rs1014290 within the SLC2A9 gene is associated with type 2 DM in Han Chinese.
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Riegersperger M, Covic A, Goldsmith D. Allopurinol, uric acid, and oxidative stress in cardiorenal disease. Int Urol Nephrol 2011; 43:441-9. [DOI: 10.1007/s11255-011-9929-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 02/16/2011] [Indexed: 02/07/2023]
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12
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Current World Literature. Curr Opin Rheumatol 2011; 23:219-26. [DOI: 10.1097/bor.0b013e3283448536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Karmi N, Brown EA, Hughes SS, McLaughlin B, Mellersh CS, Biourge V, Bannasch DL. Estimated frequency of the canine hyperuricosuria mutation in different dog breeds. J Vet Intern Med 2011; 24:1337-42. [PMID: 21054540 DOI: 10.1111/j.1939-1676.2010.0631.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Hyperuricosuria is a condition that predisposes dogs to urate urolithiasis. A mutation that causes canine hyperuricosuria was previously identified in 3 unrelated dog breeds. The occurrence of the mutation in additional breeds was not determined. HYPOTHESIS/OBJECTIVES Identify additional breeds that have the hyperuricosuria mutation and estimate the mutant allele frequency in those breeds. ANIMALS Three thousand five hundred and thirty dogs from 127 different breeds were screened for the hyperuricosuria mutation. METHODS DNA samples were genotyped by pyrosequencing and allele-specific polymerase chain reaction methods. RESULTS Mutant allele frequencies that range from 0.001 to 0.15 were identified in the American Staffordshire Terrier, Australian Shepherd, German Shepherd Dog, Giant Schnauzer, Parson (Jack) Russell Terrier, Labrador Retriever, Large Munsterlander, Pomeranian, South African Boerboel, and Weimaraner breeds. CONCLUSIONS AND CLINICAL IMPORTANCE The hyperuricosuria mutation has been identified in several unrelated dog breeds. The mutant allele frequencies vary among breeds and can be used to determine an appropriate breeding plan for each breed. A DNA test is available and may be used by breeders to decrease the mutant allele frequency in breeds that carry the mutation. In addition, veterinarians may use the test as a diagnostic tool to identify the cause of urate urolithiasis.
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Affiliation(s)
- N Karmi
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616, USA
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Current world literature. Curr Opin Urol 2011; 21:166-72. [PMID: 21285721 DOI: 10.1097/mou.0b013e328344100a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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