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The genetic side of diabetic kidney disease: a review. Int Urol Nephrol 2023; 55:335-343. [PMID: 35974289 DOI: 10.1007/s11255-022-03319-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/24/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Diabetic kidney disease (DKD) is one of the most common complications of diabetes, with approximately 30-40% of patients with type 1 diabetes mellitus and 20% of patients with type 2 diabetes mellitus eventually developing DKD. If DKD is not controlled in the early clinical stage and proteinuria develops, the disease will progress to end-stage renal disease. The pathogenesis of DKD remains largely unknown and is multifactorial, likely due to interactions between genetic and environmental factors. Familial clustering also supports a critical role of hereditary factors in DKD. The development of gene detection technology has promoted the exploration of DKD susceptibility genes in different cohorts of patients with diabetes. Identifying susceptibility genes can provide insights into the pathogenesis of DKD, as well as a basis for its clinical diagnosis and therapy. RESULTS Numerous candidate gene loci have been found to be associated with DKD, many of which play critical regulatory roles in the pathogenesis of this disease, including genes involved in glycol-metabolism, lipid metabolism, the renin-angiotensin-aldosterone system, inflammation and oxidative stress. In this review, we summarize the functions of several susceptibility genes involved in the development of DKD. CONCLUSION Based on our findings, we recommend that studying susceptibility gene polymorphisms can lead to a better understanding of the pathogenesis of DKD and could help prevent this disease or improve its outcomes.
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Role of eNOS and TGFβ1 gene polymorphisms in the development of diabetic nephropathy in type 2 diabetic patients in South Indian population. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00216-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Diabetic nephropathy is known to be a leading complication of diabetes mellitus, characterized by diverse aspects such as high urinary albumin level, elevated blood pressure, and genetic susceptibility leading to end-stage renal disease. The current study was carried out to investigate the association of eNOS and TGFβ1 gene polymorphisms in the progression of diabetic nephropathy among type 2 diabetic patients in the South Indian population. The eNOS and TGFβ1 genetic variants were genotyped in 280 T2DM patients, 140 with DN, 140 without DN, and 140 controls. Genotyping was performed using ARMS PCR and the genomic variants were confirmed by the Sanger sequencing method.
Results
A significant (p < 0.05) association was observed in the genotypic frequencies of eNOS (G > T) polymorphism in the T2DM patients with diabetic nephropathy when compared to controls. The frequency of TT (heterozygous) genotype was observed to increase in patients with type 2 diabetes and DN when compared to the diabetic patients without DN and controls. This indicates that diabetic patients with TT genotype are at an increased risk to develop DN. However, TGFβ1 (G > C) polymorphism did not show any association in the allele and genotypic frequencies with DN when compared with T2DM and controls.
Conclusion
The results of the study propose a strong influence of TT genotype of eNOS gene be significantly linked with diabetic nephropathy in T2DM patients. Whereas no association was examined concerning TGFβ1 gene polymorphism and DN. Nevertheless, large sample size studies are required to confirm the part of these genetic variants in the development of DN.
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Wu J, Jiang C, Hua Y, Liu X, You C. Association between polymorphisms of cytokine genes and diabetic nephropathy: A comprehensive systematic review and meta-analysis. Int J Clin Pract 2021; 75:e14634. [PMID: 34309136 DOI: 10.1111/ijcp.14634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/21/2021] [Indexed: 11/30/2022] Open
Abstract
AIM Diabetic nephropathy (DN) is one of the microvascular complications of diabetes, leading to renal failure. In this study, we sought to systematically investigate the cytokine gene polymorphisms association with DN. METHODS A structured bibliographic search on PubMed, Scopus, and EMBASE databases has been performed to identify related papers. The odds ratio and corresponding 95% confidence intervals (CIs) were calculated to estimate the association. RESULTS Overall, the pooled results showed that the dominant models of TNF-α rs1800629, IL-1β rs16944, IL-8 rs4073, and IL-10 rs1800896 were associated with increased susceptibility to DN. Also, the pooled analyses of the mutant allele vs wild allele of TNF-α rs1800629, rs1799964, IL-1β rs16944, and IL-8 rs4073 were associated with increased susceptibility to DN. Rs1800629, rs16944, rs4073, and rs1800896 polymorphisms were significantly associated with DN susceptibility, suggesting its potential use as a genetic risk marker in the population.
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Affiliation(s)
- Jinwen Wu
- Endocrinology Department, the Second People's Hospital of Yibin, Yibin, China
| | - Chengxia Jiang
- Endocrinology Department, the Second People's Hospital of Yibin, Yibin, China
| | - Yan Hua
- Endocrinology Department, the Second People's Hospital of Yibin, Yibin, China
| | - Xin Liu
- Endocrinology Department, the Second People's Hospital of Yibin, Yibin, China
| | - Chengshan You
- Endocrinology Department, the Second People's Hospital of Yibin, Yibin, China
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Bao Y, Liang W, Ye Y, Yi B. PERK-Dependent Activation of the JAK2/STAT3 Pathway Contributes to High Glucose-Induced Extracellular Matrix Deposition in Renal Tubular Epithelial Cells. Int J Endocrinol 2021; 2021:8475868. [PMID: 34335747 PMCID: PMC8315854 DOI: 10.1155/2021/8475868] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 07/05/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Although the deposition of extracellular matrix (ECM) is critical leading to tubular damage in diabetic kidney disease (DKD), the mechanism still remains unclear. The purpose of this study was to demonstrate a role for protein kinase R-like endoplasmic reticulum kinase (PERK) (a protein located in the endoplasmic reticulum membrane) in this pathologic process. METHODS NRK-52E cells were grown in the media containing different concentrations of glucose or thapsigargin for different durations. Cells were subsequently incubated with or without AG490, a selective inhibitor of Janus kinase 2 (JAK2) or GSK2606414 (a selective PERK inhibitor). We evaluated the production of TGF-β1, fibronectin, and collagen I proteins by ELISA. The levels of 78 kD-glucose-regulated protein (GRP78) and PERK, as well as the phosphorylation statues of PERK and JAK2/signal transducer and activator of transcription (STAT3), were determined by western blotting analysis. RESULTS We showed that the increased phosphorylation of JAK2 and STAT3 was accompanied by overexpression of TGF-β1 and ECM deposition in high glucose medium. Disruption of the JAK2/STAT3 pathway with AG490 significantly prevents the high glucose-induced increase in TGF-β1, fibronectin, and collagen I. High glucose induced the overproduction of GRP78 and phosphorylation of PERK, which indicated that endoplasmic reticulum stress (ERS) was triggered in NRK-52E cells cultured under high glucose condition. Inhibition of PERK phosphorylation with GSK2606414, however, blocked the effect of JAK2/STAT3 on the production of TGF-β1 and ECM components in NRK-52E cells. CONCLUSION Our data indicated that the ECM accumulation induced by high glucose arouse via the PERK-dependent JAK2/STAT3-signaling pathway in renal tubular epithelial cells.
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Affiliation(s)
- Yan Bao
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Wei Liang
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Yingchun Ye
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Bo Yi
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
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Figueiredo EA, Loyola LC, Belangero PS, Campos Ribeiro-Dos-Santos ÂK, Emanuel Batista Santos S, Cohen C, Wajnsztejn A, Martins de Oliveira A, Smith MC, Pochini ADC, Andreoli CV, Ejnisman B, Cohen M, Leal MF. Rotator Cuff Tear Susceptibility Is Associated With Variants in Genes Involved in Tendon Extracellular Matrix Homeostasis. J Orthop Res 2020; 38:192-201. [PMID: 31444797 DOI: 10.1002/jor.24455] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/13/2019] [Indexed: 02/04/2023]
Abstract
Rotator cuff tears (RCT) is a multifactorial disease with genetic factors contributing for the disease etiology. We hypothesized that genetic variants in genes involved in extracellular matrix (ECM) homeostasis may alter susceptibility to RCT. We evaluated 20 polymorphisms of genes involved in ECM homeostasis in 211 cases of full-thickness tears of the supraspinatus (Nfemales = 130; Nmales = 81) and 567 age-matched controls (Nfemales = 317; Nmales = 250). Multivariate logistic regressions were carried out with age, gender, genetic ancestry (based on the analysis of 61 biallelic short insertion/deletion polymorphisms), and common co-morbidities (diabetes, dyslipidemia, and smoking habits) as covariates. We observed that carriers of the rare allele of both studied variants of TGFB1, as well as their G/A (rs1800470/rs1800469) haplotype, were less susceptible to RCT (p < 0.05). In contrast, carriers of the G allele of MMP9 rs17576 (p = 0.014) or G/G haplotype (rs17576/rs17577; p < 0.001) had an increased risk for tendon tears. The presence of the T allele of MMP2 rs2285053 (p = 0.033), the T allele of MMP3 rs679620 (p = 0.024), and the TT-genotype of TIMP2 rs2277698 (p = 0.01) was associated with susceptibility to tears, especially in females. In males, the A allele of COL5A1 rs3196378 (p = 0.032) and the G allele of TGFBR1 rs1590 (p = 0.039) were independent risk factors for RCT. The C/T COL5A1 (rs3196378/rs11103544) haplotype was associated with a reduced risk of tears in males (p = 0.03). In conclusion, we identified the genetic variants associated with RCT susceptibility, thereby reinforcing the role of genes involved in the structure and homeostasis of the ECM of tendons in disease development. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:192-201, 2020.
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Affiliation(s)
- Eduardo A Figueiredo
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Leonor Casilla Loyola
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil.,Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-001, São Paulo, Brazil
| | - Paulo S Belangero
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | | | - Sidney Emanuel Batista Santos
- Laboratório de Genética Humana e Médica, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Carina Cohen
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Andre Wajnsztejn
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Adrielle Martins de Oliveira
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil.,Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-001, São Paulo, Brazil
| | - Marília C Smith
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-001, São Paulo, Brazil
| | - Alberto de Castro Pochini
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Carlos V Andreoli
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Benno Ejnisman
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Moises Cohen
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil
| | - Mariana F Leal
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, 04038-032, São Paulo, Brazil.,Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-001, São Paulo, Brazil
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Ramírez Á, Hernández M, Suárez-Sánchez R, Ortega C, Peralta J, Gómez J, Valladares A, Cruz M, Vázquez-Moreno MA, Suárez-Sánchez F. Type 2 diabetes-associated polymorphisms correlate with SIRT1 and TGF-β1 gene expression. Ann Hum Genet 2019; 84:185-194. [PMID: 31799723 DOI: 10.1111/ahg.12363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 08/08/2019] [Accepted: 10/10/2019] [Indexed: 12/27/2022]
Abstract
The polymorphisms rs3758391 and rs1800470 located in SIRT1 and TGF-β1 have been associated with type 2 diabetes in different populations but its functional effect is not clear. In this study, we evaluated their effect on the expression of SIRT1 and TGF-β1 in peripheral blood as well as their participation in the formation of DNA-protein complexes in a pancreas-derived cell line. It has been described that SIRT1 and TGF-β1 participate in cell growth and regulation of production and secretion of insulin in the pancreas. Anthropometric and biochemical profiles of 127 adults were measured. Genotypes for rs3758391 and rs1800470 were determined using TaqMan assays. Expression analysis of SIRT1 and TGF-β1 were performed using real-time PCR. Gene expression of these genes increased 1.8 ± 0.6- and 1.3 ± 0.6-fold in patients carrying the TT genotype of rs3758391 and rs1800470 when compared to carriers of the CC genotype. Then, we tested whether these single-nucleotide polymorphisms (SNPs) (and rs932658, which is in linkage disequilibrium with rs3758391) are located in regulatory DNA-protein binding sites by electrophoretic mobility shift assays using nuclear extract from the pancreas-derived cell line BxPC-3. The electrophoretic mobility shift assay showed no binding of nuclear proteins to DNA. In conclusion, the genotypes of rs3758391 and rs1800470 are associated with modifications in the expression of the genes SIRT1 and TGF-β1, respectively, but none of the tested SNPs are located in regulatory DNA-protein binding sites.
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Affiliation(s)
- Ángeles Ramírez
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | - Miriam Hernández
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | - Rocío Suárez-Sánchez
- Laboratorio de Medicina Genómica, Departamento de Genética, Instituto Nacional de Rehabilitación LGII, Ciudad de México
| | - Clara Ortega
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | - Jesús Peralta
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | - Jaime Gómez
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | - Adán Valladares
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | - Miguel Cruz
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
| | | | - Fernando Suárez-Sánchez
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Ciudad de México, México
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Varghese S, Kumar SG. Association between genetic variants of NOS3, TGF-β and susceptibility of diabetic nephropathy: A meta-analysis. Meta Gene 2019. [DOI: 10.1016/j.mgene.2019.100573] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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8
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Zhou T, Li HY, Zhong H, Zhong Z. Relationship between transforming growth factor-β1 and type 2 diabetic nephropathy risk in Chinese population. BMC MEDICAL GENETICS 2018; 19:201. [PMID: 30458730 PMCID: PMC6247505 DOI: 10.1186/s12881-018-0717-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/14/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Diabetes mellitus (DM) is divided into four different etiological categories: type 1 DM (T1DM), type 2 DM (T2DM), other specific types, and gestational DM. One severe complication of T2DM is type 2 diabetic nephropathy (T2DN). The possible association of serum transforming growth factor-β1 (TGF-β1) levels and the TGF-β1 T869C gene polymorphism with patient susceptibility to T2DN in Chinese population is unclear at present. This study was conducted to assess these relationships in Chinese population by a meta-analysis. METHODS Association reports were searched and pulled from the Cochrane Library, the China Biological Medicine Database (CBM), and PubMed on March 1, 2018, and eligible studies were selected and used for calculations. The results were expressed as weighted mean differences (MD) for continuous data. Odds ratios (OR) were used to express the results for dichotomous data. Additionally, 95% confidence intervals (CI) were calculated. RESULTS Forty-eight reports for the relationship between serum TGF-β1 levels and the risk of T2DN and 13 studies on the association of the TGF-β1 T869C gene polymorphism with susceptibility to T2DN in Chinese population were retrieved from this study. Serum TGF-β1 levels in the T2DM group were higher than those in the normal control group (MD = 17.30, 95% CI: 12.69-21.92, P < 0.00001). The serum TGF-β1 level in the T2DN group was significantly higher than that in the normal control group (MD = 70.03, 95% CI: 60.81-79.26, P < 0.00001;). The serum TGF-β1 level in the T2DN group was significantly higher than that in the T2DM group (MD = 56.18, 95% CI: 46.96-65.39, P < 0.00001). Serum TGF-β1 levels in T2DM patients with microalbuminuria were increased when compared with those in T2DM patients with normoalbuminuria. Furthermore, serum TGF-β1 levels in T2DM patients with macroalbuminuria were increased when compared with those in T2DM patients with microalbuminuria. The TGF-β1 T allele, TT allele and CC genotype were associated with T2DN susceptibility in Chinese population (T: OR = 0.74, 95% CI: 0.59-0.92, P = 0.007; TT: OR = 0.55, 95% CI: 0.31-0.96, P = 0.04; CC: OR = 1.38, 95% CI: 1.14-1.67, P = 0.001). CONCLUSIONS High levels of TGF-β1 are associated with susceptibility to T2DM, T2DN and the progression of proteinuria in T2DN patients in Chinese population. Further, the TGF-β1 T allele, and TT genotype were protective factors against the onset of T2DN and CC genotype was a risk factor for the susceptibility of T2DN in Chinese populations.
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Affiliation(s)
- Tianbiao Zhou
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, No 69 Dongsha Road, Shantou, 515041 China
| | - Hong-Yan Li
- Department of Nephrology, Huadu District People’s Hospital of Guangzhou, Southern Medical University, Guangzhou, 510800 China
| | - Hongzhen Zhong
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, No 69 Dongsha Road, Shantou, 515041 China
| | - Zhiqing Zhong
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, No 69 Dongsha Road, Shantou, 515041 China
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Wei L, Xiao Y, Li L, Xiong X, Han Y, Zhu X, Sun L. The Susceptibility Genes in Diabetic Nephropathy. KIDNEY DISEASES 2018; 4:226-237. [PMID: 30574499 DOI: 10.1159/000492633] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/03/2018] [Indexed: 12/22/2022]
Abstract
Background Diabetes mellitus (DM) poses a severe threat to global public health. Diabetic nephropathy (DN) is one of the most common complications of diabetes and the leading cause of end-stage renal disease (ESRD). Approximately 30-40% of DM patients in the world progress to ESRD, which emphasizes the effect of genetic factors on DN. Family clustering also supports the important role of hereditary factors in DN and ESRD. Therefore, a large number of genetic studies have been carried out to identify susceptibility genes in different diabetic cohorts. Extensive susceptibility genes of DN and ESRD have not been identified until recently. Summary and Key Messages Some of these associated genes function as pivotal regulators in the pathogenesis of DN, such as those related to glycometabolism and lipid metabolism. However, the functions of most of these genes remain unclear. In this article, we review several susceptibility genes according to their genetic functions to make it easier to determine their exact effect on DN and to provide a better understanding of the advancements from genetic studies. However, several challenges associated with investigating the genetic factors of DN still exist. For instance, it is difficult to determine whether these variants affect the expression of the protein they encode or other cytokines. More efforts should be made to determine how these genes influence the progression of DN. In addition, many results could not be replicated among races, suggesting that the association between genetic polymorphisms and DN is race-specific. Therefore, large, well-designed studies involving more relevant variables and ethnic groups and more relevant functional studies are urgently needed. These studies may be beneficial and retard the progression of DN by early intervention, especially for patients who carry certain risk alleles or genotypes.
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Affiliation(s)
- Ling Wei
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Ying Xiao
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Li Li
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiaofen Xiong
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yachun Han
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Xuejing Zhu
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Lin Sun
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, China
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Mao S, Yan B, Zhang J. Association of transforming growth factor-β1 polymorphisms with the risk of chronic kidney diseases. Ren Fail 2015; 37:304-11. [DOI: 10.3109/0886022x.2015.1077324] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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11
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Raina P, Sikka R, Kaur R, Sokhi J, Matharoo K, Singh V, Bhanwer AJS. Association of Transforming Growth Factor Beta-1 (TGF-β1) Genetic Variation with Type 2 Diabetes and End Stage Renal Disease in Two Large Population Samples from North India. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2015; 19:306-17. [PMID: 25871499 DOI: 10.1089/omi.2015.0005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Geographic and ethnic differences impart an immense influence on the genetic susceptibility to Type 2 diabetes (T2D) and diabetic nephropathy (DN). Transforming growth factor-beta1 (TGF-β1), a ubiquitously expressed pro-fibrotic cytokine plays a pivotal role in mediating the hypertrophic and fibrotic manifestations of DN. The present study is aimed to study the association of TGF-β1 g.869T>C (rs1800470) and g.-509C>T (rs1800469) polymorphism in T2D and end stage renal disease (ESRD) cases from the two geographically and ethnically different populations from North India. A total of 1313 samples comprising 776 samples from Punjab (204 with ESRD, 257 without ESRD, and 315 healthy controls) and 537 samples from Jammu and Kashmir (150 with ESRD, 187 without ESRD, and 200 controls) were genotyped for TGF-β1 (rs1800470 and rs1800469) using ARMS-PCR. The CC genotype of rs1800470 increased ESRD risk by 3.1-4.5-fold in both populations. However, for rs1800469, the TT genotype provided 5.5-fold risk towards ESRD cases from Jammu and Kashmir and no risk for the cases from Punjab. The haplotype C-T conferred nearly a 2-3-fold risk towards T2D and ESRD and diplotype CC-CT conferred a 4-fold risk towards ESRD. Our results conclude that TGF-β1 (rs1800470) may increase the risk of both ESRD and T2D in both populations, but TGF-β1 (rs1800469) provided risk for only ESRD in the population of Jammu and Kashmir. The present study is one of the large sample sized genetic association studies of T2D and ESRD from Indian population and adds to the scholarship on global health omics.
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Affiliation(s)
- Priyanka Raina
- 1 Department of Human Genetics, Guru Nanak Dev University , Amritsar, Punjab, India
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12
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Zhou TB, Jiang ZP, Qin YH, Drummen GPC. Association of transforming growth factor-β1 T869C gene polymorphism with diabetic nephropathy risk. Nephrology (Carlton) 2014; 19:107-15. [PMID: 24428217 DOI: 10.1111/nep.12176] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2013] [Indexed: 01/04/2023]
Abstract
AIM A possible association between the transforming growth factor-β1 (TGF-β1) T869C gene polymorphism and the risk of developing diabetic nephropathy (DN) remains unclear. This investigation was performed to assess if an association between the TGF-β1 T869C gene polymorphism and DN risk exists by using meta-analysis to combine comparable studies, thereby increasing sample size and statistical significance, and to identify patterns in various studies. METHODS The association reports were identified from PubMed, Cochrane Library, and CBM-disc (China Biological Medicine Database) on 1 May 2013, and eligible studies were recruited and synthesized. RESULTS Fifty reports were recruited into this meta-analysis for the association of the TGF-β1 T869C gene polymorphism with DN risk. The TT genotype in the overall population was shown to be associated with DN risk (odds ratio (OR) = 0.74, 95% confidence interval (CI): 0.56-0.98, P = 0.04). In the sub-group analysis, CC genotype was associated with DN risk in Asians, Caucasians, and Africans. However, the sample size for Caucasians and Africans was relatively small. Furthermore, T allele was distinctly associated with the risk of developing DN in the Asian population (OR = 0.76, 95% CI: 0.62-0.92, P = 0.005). CONCLUSIONS The TT genotype of TGF-β1 T869C in the overall population was associated with DN risk, whereas the CC genotype and T allele were distinctly associated with DN risk in the Asian population. Nonetheless, additional studies are required to firmly establish a correlation between the aforementioned polymorphism and DN risk.
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Affiliation(s)
- Tian-Biao Zhou
- Department of Nephrology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Nazir N, Siddiqui K, Al-Qasim S, Al-Naqeb D. Meta-analysis of diabetic nephropathy associated genetic variants in inflammation and angiogenesis involved in different biochemical pathways. BMC MEDICAL GENETICS 2014; 15:103. [PMID: 25280384 PMCID: PMC4411872 DOI: 10.1186/s12881-014-0103-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 08/26/2014] [Indexed: 02/08/2023]
Abstract
Background Diabetes mellitus is the most common chronic endocrine disorder, affecting an estimated population of 382 million people worldwide. It is associated with microvascular and macrovascular complications, including diabetic nephropathy (DN); primary cause of end-stage renal disease. Different inflammatory and angiogenic molecules in various pathways are important modulators in the pathogenesis and progression of diabetic nephropathy. Differential disease risk in DN may be partly attributable to genetic susceptibility. In this meta-analysis, we aimed to determine which of the previously investigated genetic variants in these pathways are significantly associated with the development of DN and to examine the functional role of these genes. Methods A systematic search was conducted to collect and analyze all studies published till June 2013; that investigated the association between genetic variants involved in inflammatory cytokines and angiogenesis and diabetic nephropathy. Genetic variants associated with DN were selected and analyzed by using Comprehensive Meta Analysis software. Pathway analysis of the genes with variants showing significant positive association with DN was performed using Genomatix Genome Analyzer (Genomatix, Munich, Germany). Results After the inclusion and exclusion criteria for this analysis, 34 studies were included in this meta-analysis. 11 genetic variants showed significant positive association with DN in a random-effects meta-analysis. These included genetic variants within or near VEGFA, CCR5, CCL2, IL-1, MMP9, EPO, IL-8, ADIPOQ and IL-10. rs1800871 (T) genetic variant in IL-10 showed protective effect for DN. Most of these eleven genetic variants were involved in GPCR signaling and receptor binding pathways whereas four were involved in chronic kidney failure. rs833061 [OR 2.08 (95% CI 1.63-2.66)] in the VEGFA gene and rs3917887 [OR 2.04 (95% CI 1.64-2.54)] in the CCL2 gene showed the most significant association with the risk of diabetic nephropathy. Conclusions Our results indicate that 11 genetic variants within or near VEGFA, CCR5, CCL2, IL-1, MMP9, EPO, IL-8, ADIPOQ and IL-10 showed significant positive association with diabetic nephropathy. Gene Ontology or pathway analysis showed that these genes may contribute to the pathophysiology of DN. The functional relevance of the variants and their pathways can lead to increased biological insights and development of new therapeutic targets. Electronic supplementary material The online version of this article (doi:10.1186/s12881-014-0103-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nyla Nazir
- Strategic Center for Diabetes Research, King Saud University, P.O. Box 18397, Riyadh, 11415, K.S.A, Saudi Arabia.
| | - Khalid Siddiqui
- Strategic Center for Diabetes Research, King Saud University, P.O. Box 18397, Riyadh, 11415, K.S.A, Saudi Arabia.
| | - Sara Al-Qasim
- Strategic Center for Diabetes Research, King Saud University, P.O. Box 18397, Riyadh, 11415, K.S.A, Saudi Arabia.
| | - Dhekra Al-Naqeb
- Strategic Center for Diabetes Research, King Saud University, P.O. Box 18397, Riyadh, 11415, K.S.A, Saudi Arabia.
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Li Z, Li Y, Chen L. Association between transforming growth factor-β1gene-509C/T polymorphism and susceptibility of IgA nephropathy: a meta-analysis. Ren Fail 2014; 36:1473-80. [DOI: 10.3109/0886022x.2014.947517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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15
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Vargas-Alarcón G, Posadas-Romero C, Villarreal-Molina T, Alvarez-León E, Angeles-Martinez J, Posadas-Sanchez R, Monroy-Muñoz I, Luna-Fuentes S, González-Salazar C, Ramirez-Bello J, Cardoso-Saldaña G, Medina-Urrutia A, Kimura-Hayama E. IL-24 gene polymorphisms are associated with cardiometabolic parameters and cardiovascular risk factors but not with premature coronary artery disease: the genetics of atherosclerotic disease Mexican study. J Interferon Cytokine Res 2014; 34:659-66. [PMID: 24552169 DOI: 10.1089/jir.2013.0081] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Coronary artery disease (CAD) is a multifactorial and polygenic disorder that results from an excessive inflammatory response. We analyzed whether interleukin-24 (IL-24) gene polymorphisms are associated with premature CAD in a case-control association study. Four polymorphisms (rs1150253, rs1150256, rs1150258, and rs3762344) of the IL-24 gene were analyzed by 5' exonuclease TaqMan genotyping assays in a group of 952 patients with premature CAD, 284 individuals with subclinical atherosclerosis (SA), and 912 controls. The studied polymorphisms were not associated with the risk of premature CAD or SA (P>0.05). Under dominant models adjusted for age, sex, body mass index, and medication, the polymorphisms were associated with cardiometabolic parameters and cardiovascular risk factors. Three polymorphisms (rs1150253, rs1150256, and rs3762344) were associated with hypertension and increased levels of systolic blood pressure in controls. In SA, 2 polymorphisms (rs1150256 and rs3762344) were associated with type 2 diabetes mellitus, gamma-glutamyl transpeptidase (GGT), and alkaline phosphatase, whereas rs1150253 was associated with GGT and type 2 diabetes mellitus and rs1150258 with GGT and alkaline phosphatase. In premature CAD, the 4 polymorphisms were associated with total cholesterol >200 mg/dL, low-density lipoprotein cholesterol (LDL-C), and GGT, whereas rs1150256 was associated also with ApoA. On the other hand, rs1150258 was associated with ApoA, LDL-C >100 mg/dL, and apoB/apoA ratio, and rs3762344 with ApoA, apoB/apoA ratio, LDL-C >100 mg/dL, and total cholesterol. On the basis of single-nucleotide polymorphism functional prediction software, rs1150253 and rs1150258 polymorphisms seem to be functional. The 4 studied polymorphisms were in linkage disequilibrium and had a similar haplotype distribution in patients and controls. Our study demonstrates the association of IL-24 polymorphisms with metabolic and cardiovascular risk factors in individuals with premature CAD, SA, and controls.
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Affiliation(s)
- Gilberto Vargas-Alarcón
- 1 Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez , Mexico City, Mexico
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Abstract
Several studies have demonstrated that chronic and low-grade inflammation is closely linked to type 2 diabetes mellitus. The associated mechanisms are related to synthesis and release of proinflammatory and anti-inflammatory cytokines, mainly by the adipose tissue. Moreover, there are evidences that cytokines and adhesion molecules are important for development of diabetic nephropathy. Among the cytokines associated with inflammatory responses in type 2 diabetes mellitus, the transforming growth factor-β (TGF-β) has been recognized as a central player in the diabetic nephropathy being involved in the development of glomerulosclerosis and interstitial fibrosis, as observed in the course of end-stage renal disease. Although TGF-β1 is classically an anti-inflammatory immune mediator it has been shown that in the presence of IL-6, which increases before the onset of T2D, TGF-β1 favors the differentiation of T helper 17 (Th17) cells that are activated in many pro-inflammatory conditions. Since TGF-β1 mRNA and consequently serum TGF-β1 levels are under genetic control, this review aims to discuss the relationship of TGF-β1 levels and polymorphisms in the development of nephropathy in type 2 diabetes mellitus.
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Ascencio-Montiel IDJ, Parra EJ, Valladares-Salgado A, Gómez-Zamudio JH, Kumate-Rodriguez J, Escobedo-de-la-Peña J, Cruz M. SOD2 gene Val16Ala polymorphism is associated with macroalbuminuria in Mexican type 2 diabetes patients: a comparative study and meta-analysis. BMC MEDICAL GENETICS 2013; 14:110. [PMID: 24119114 PMCID: PMC3853578 DOI: 10.1186/1471-2350-14-110] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 10/01/2013] [Indexed: 02/08/2023]
Abstract
Background Several studies in type 2 diabetes patients have shown significant associations between the SOD2 gene Val16Ala polymorphism and albuminuria, but this association has not been explored in the Mexican population. Methods We evaluated the association between the SOD2 gene Val16Ala polymorphism (rs4880) and macroalbuminuria in a sample of 994 unrelated Mexican type 2 diabetes patients. The study included 119 subjects with urinary albumin >300 mg/dL and 875 subjects with urinary albumin ≤ 30 mg/dL. Genotyping of the SOD2 gene Val16Ala SNP was carried out with Real-Time Polymerase Chain Reaction (RT-PCR). Results The frequency of the TT genotype was 6.7% higher in participants with macroalbuminuria than in the normoalbuminuria group (16.8% vs. 10.1%). Using a logistic regression analysis, we observed that individuals with the CC genotype had significantly lower risks of macroalbuminuria than those with the TT genotype (OR=0.42, p=0.034). We carried out a meta-analysis combining our data with data from four previous studies and estimated an odds ratio (95% CI) for the C allele (with respect to the reference T allele) of 0.65 (0.52-0.80, p<0.001). Conclusions A significant association was found between the SOD2 Val16Ala polymorphism and macroalbuminuria in a sample of Mexican type 2 diabetes patients.
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Affiliation(s)
- Iván de Jesús Ascencio-Montiel
- Biochemistry Research Unit, Hospital de Especialidades, Centro Médico Nacional "Siglo XXI", Instituto Mexicano del Seguro Social, Mexico DF, Mexico.
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Zhang J, Guan YL, Xiao Y, Zhang XW. A meta-analysis of the association of G915C, G800A, C509T gene polymorphism of transforming growth factor-β1 with diabetic nephropathy risk. Ren Fail 2013; 36:321-6. [PMID: 24060183 DOI: 10.3109/0886022x.2013.832320] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
This meta-analysis was conducted to evaluate the association of transforming growth factor-β1 (TGF-β1) G915C, G800A, C509T gene polymorphism with the risk of diabetic nephropathy (DN). The association literatures were identified from PubMed, Cochrane Library, and CBM-disc (China Biological Medicine Database) on March 1, 2013, and eligible reports were recruited and synthesized. Seven reports were recruited into this meta-analysis for the association of TGF-β1 G800A, C509T, G915C gene polymorphism with DN risk. GG genotype, CC genotype, and C allele of TGF-β1 G915C were not associated with the DN risk (GG: OR = 0.84, 95% CI: 0.62-1.14, p = 0.27; CC: OR = 1.05, 95% CI: 0.50-2.22, p = 0.90; C allele: OR = 1.16, 95% CI: 0.88-1.51, p = 0.29). Furthermore, TGF-β1 G800A, C509T gene polymorphism was not associated with the DN risk. In conclusion, TGF-β1 G915C, G800A, and C509T gene polymorphism are not associated with the DN risk. However, more studies should be performed to confirm this relationship in the future.
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Affiliation(s)
- Jie Zhang
- Department of Endocrinology, Central Hospital of People's Liberation Army , Zhengzhou , China
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El-Sherbini SM, Shahen SM, Mosaad YM, Abdelgawad MS, Talaat RM. Gene polymorphism of transforming growth factor-β1 in Egyptian patients with type 2 diabetes and diabetic nephropathy. Acta Biochim Biophys Sin (Shanghai) 2013; 45:330-8. [PMID: 23399816 DOI: 10.1093/abbs/gmt003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Role of the transforming growth factor-β1 (TGF-β1) gene polymorphisms located at codons 10 and 25 in the genetic predisposition to type 2 diabetes (T2D) and in diabetic nephropathy (DN) in Egyptian patients was investigated. A case control study was done for 99 unrelated Egyptian patients with T2D (50 DN(-) and 49 DN(+)) and 98 age- and sex-matched healthy controls. TGF-β1 T869C (codon 10) and G915C (codon 25) polymorphism detection was done by amplification refractory mutation system method. DN(+) patients were younger, with higher body mass index, serum triglycerides, serum creatinine, and lower serum albumin than those in DN(-) patients. Moderate and bad grades of diabetic control were associated with DN (P < 0.001). The TGF-β1 (T869C) C allele, TC and TC + CC genotypes were significantly higher in patients; the T allele and TT genotype were significantly higher in controls (Pc < 0.001). The TGF-β1 TC genotype was associated with DN (Pc < 0.05). Non-significant differences were detected between T2D patients and controls in the frequencies of TGF-β1 (G915C) alleles and genotypes. In conclusion, these preliminary data showed that the TGF-β1 codon 10 C allele, and C allele-containing genotypes may be susceptible, and T allele/TT genotype may be protective factors for T2D and DN(+) complications.
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Affiliation(s)
- Sherif M El-Sherbini
- Molecular Immunology, Molecular Biology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), Menofia University, Menofia 22857, Egypt
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Zhang DM, Li YC, Xu D, Ding XQ, Kong LD. Protection of curcumin against fructose-induced hyperuricaemia and renal endothelial dysfunction involves NO-mediated JAK–STAT signalling in rats. Food Chem 2012; 134:2184-93. [DOI: 10.1016/j.foodchem.2012.04.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 03/28/2012] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
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21
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Jiménez-Sousa MA, Fernández-Rodríguez A, Heredia M, Tamayo E, Guzmán-Fulgencio M, Lajo C, López E, Gómez-Herreras JI, Bustamante J, Bermejo-Martín JF, Resino S. Genetic polymorphisms located in TGFB1, AGTR1, and VEGFA genes are associated to chronic renal allograft dysfunction. Cytokine 2012; 58:321-6. [PMID: 22433249 DOI: 10.1016/j.cyto.2012.02.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 01/09/2012] [Accepted: 02/24/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Persistent inflammation and fibrosis have been related to active progression of renal deterioration and reduced survival of kidney transplant. The aim of this study was to determine the impact of single-nucleotide polymorphisms (SNPs) located in regions related to inflammatory and immune processes on the development of chronic renal allograft dysfunction (CRAD). METHODS A retrospective study was carried out on 276 patients who received kidney transplant (KT). SNPs were genotyped via the SNPlex platform. Statistical analysis was performed with SNPstat and regression logistic analyses were adjusted by age and gender of recipients and donors, cold ischemia time and the number of human leukocyte antigen (HLA) mismatches. RESULTS From 276 patients with KT, 118 were non-CRAD and 158 were CRAD. Three SNPs showed significant associations with CRAD development: rs1800471 in transforming growth factor beta 1 (TGFB1), rs5186 in angiotensin II receptor type 1 (AGTR1), and rs699947 in vascular endothelial growth factor A (VEGFA). GC genotype of rs1800471 was associated with increased odds of CRAD compared to GG genotype (OR=2.65 (95% confidence interval (CI)=1.09; 6.47), p=0.025), as well as AC and AA genotype of rs699947 assuming a dominant model (OR=1.80 (95% CI=1.02; 3.20), p=0.044). Besides, AC and CC genotypes of rs5186 were associated with reduced odds of CRAD assuming a dominant model (OR=0.56 (95% CI=0.33; 0.96), p=0.033). CONCLUSION Our findings suggest that three genes related to immunity and inflammation (rs1800471, rs5186 and rs699947) are associated to susceptibility or protection to CRAD, and might have diagnostic utility in predicting the likelihood of developing CRAD.
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Affiliation(s)
- María A Jiménez-Sousa
- Unidad de Epidemiología Molecular de Enfermedades Infecciosas, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Spain
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Jia H, Yu L, Gao B, Ji Q. Association between the T869C polymorphism of transforming growth factor-beta 1 and diabetic nephropathy: a meta-analysis. Endocrine 2011; 40:372-8. [PMID: 21725704 DOI: 10.1007/s12020-011-9503-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 06/17/2011] [Indexed: 12/22/2022]
Abstract
Accumulating evidence has suggested that transforming growth factor-beta 1 (TGF-β1) is a functional candidate for diabetic nephropathy (DN). However, association studies investigating the relationship of TGF-β1 gene T869C polymorphism and DN generate inconsistent results. To comprehensively clarify this issue, we performed a meta-analysis to evaluate the impact of the polymorphism on DN. We searched studies from PubMed and China National Knowledge Infrastructure (CNKI) through March 2011. Pooled ORs were calculated under allelic/additive/dominant/recessive/over-dominant genetic models. Nine studies with 1776 cases and 1740 controls were included. Our results indicated that C allele of T869C conferred a significantly increased risk of DN compared with T allele (OR = 1.25, 95% CI: 1.05-1.48) for allelic contrast. Similar results were also found under additive (OR = 1.57, 95% CI: 1.10-2.23) and dominant (OR = 1.40, 95% CI: 1.06-1.85) genetic models. However, subgroup analyses stratified by types of diabetes showed that significantly increased risks were only observed in type 2 diabetic patients, and the association persistently existed in further analysis for Asian populations. As for type 1 diabetic subjects, no significant association was detected under all the genetic models (P > 0.05). Our meta-analysis suggested that the TGF-β1 T869C polymorphism conferred an elevated risk of DN. However, significant associations were only observed in type 2 diabetic patients.
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Affiliation(s)
- Hongxia Jia
- Department of Endocrinology and Metabolism, Xijing Hospital, Fourth Military Medical University, 169 West Changle Road, Xi'an, Shaanxi, 710032, People's Republic of China
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All-trans retinoic acid can regulate the expressions of gelatinases and apolipoprotein E in glomerulosclerosis rats. Vascul Pharmacol 2011; 55:169-77. [PMID: 21907828 DOI: 10.1016/j.vph.2011.08.223] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 08/17/2011] [Accepted: 08/30/2011] [Indexed: 01/06/2023]
Abstract
Apolipoprotein E (apoE) is an important plasma protein in cholesterol homeostasis and plays a key role in the pathogenesis of glomerulosclerosis (GS). Gelatinases include matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9). The abnormal expressions of gelatinases are implicated in the pathogenesis of extracellular matrix accumulation. All-trans retinoic acid (ATRA) is an import biological agent which can play a protective role against GS. We performed this investigation to explore whether ATRA could regulate the expressions of gelatinases and apoE in the glomerulus of GS rats. 120 Wistar rats were randomly divided into three groups: sham operation group (SHO), glomerulosclerosis model group without treatment (GS) and GS model group treated with ATRA (GA). The GS disease was established by uninephrectomy and adriamycin injection. At the end of 9 and 13 weeks, the relevant samples were collected and determined. Compared with GS group at 9/13 weeks, values of 24-hour urine total protein, 24-hour urine excretion for albumin, blood urea nitrogen, serum creatinine and glomerulosclerosis index, and protein expressions of apoE, transforming growth factor-βl (TGF-β1), α-smooth muscle actin, collagen-IV and fibronectin in glomerulus and mRNA expressions of apoE and TGF-β1 in renal tissue were significantly down-regulated by ATRA (each P<0.01). However, the expressions of MMP-2 and MMP-9 (mRNA, protein and activity) were enhanced in GA group than those in GS group. In conclusion, gelatinases are associated with apoE expression, and ATRA can increase the gelatinases expressions and reduce the accumulation of apoE in glomerulus of GS rats, but the detailed mechanism needs to be elucidated in the future.
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Zhou TB, Qin YH, Lei FY, Su LN, Zhao YJ, Huang WF. apoE expression in glomerulus and correlation with glomerulosclerosis induced by adriamycin in rats. Ren Fail 2011; 33:348-54. [PMID: 21401362 DOI: 10.3109/0886022x.2011.559680] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Lipid deposition in glomerulus plays an important role in the progression of glomerulosclerosis (GS), and apolipoprotein E (apoE) is an important protein in cholesterol homeostasis. This investigation was performed to explore whether there exists an association between apoE and GS susceptibility. Eighty Wistar rats were randomly divided into two groups: sham operation group and glomerulosclerosis model group, n = 40. The GS disease in rat was induced by uninephrectomy and injecting adriamycin (5 mg/kg) through the tail vein. At the end of 9 and 13 weeks, 20 rats in each group were killed and the relative samples were collected. Serum creatinine, blood urea nitrogen, and 24-h urine protein were determined. Immunohistochemical analysis was performed on renal tissue to detect the expression of apoE, collagen IV, fibronectin, α-smooth muscle actin, and transforming growth factor-β1 in glomerulus. Real-time reverse transcription polymerase chain reaction was conducted to detect the apoE mRNA expression in renal tissue. Compared with sham operation group at the end of 9/13 weeks, glomerulosclerosis model group exhibited levels of serum creatinine, blood urea nitrogen, 24-h urine protein, and a glomerulosclerosis index that were significantly elevated ( p < 0.01), and collagen IV, fibronectin, α-smooth muscle actin, and transforming growth factor-β1 protein expression and apoE expression (protein and mRNA) were significantly upregulated (p < 0.01). In conclusion, apoE can increase the accumulation of extracellular matrix in glomerulus and may take part in the progression of GS.
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Affiliation(s)
- Tian-Biao Zhou
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, PR China
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