The Association of Transcription Factor 7 like 2 Gene Polymorphism with Diabetic Nephropathy in Patients with Type 2 Diabetes Mellitus

2020 ◽  
Vol 16 (4) ◽  
pp. 370-375 ◽  
Author(s):  
Marianne Fathy Morgan ◽  
Randa Fayez Salam ◽  
Normeen Hany Rady ◽  
Alshaimaa Rezk L.R. Alnaggar ◽  
Soha Hamed Ammar ◽  
...  

Background: The exact relationship between the different TCF7L2 gene polymorphisms and the development of diabetic nephropathy (DN) remains unclear. Objective: To investigate the association of TCF7L2 rs12255372 (G/T) gene polymorphism and diabetic nephropathy (DN) in patients with type 2 diabetes (T2D). Methods: 100 patients with T2D (50 patients without DN and 50 patients with DN) and 50 age and sex-matched healthy controls (HC) were enrolled in the study. Genotyping for the rs12255372 (G>T) polymorphism in the TCF7L2 gene was performed by real-time PCR. Results: The rs12255372 polymorphism showed a statistically significant difference between HC and patients with and without DN in both the genotype and allele frequency. However, the rs12255372 polymorphism genotype or allele frequency was not statistically different between patients with DN and those patients without DN. The G allele was found to be higher in patients and the T allele was higher in HC suggesting that the G allele was the risk allele for developing T2D &DN and that the T allele was protective. Conclusion: rs12255372 TCF7L2 gene polymorphism was strongly associated with type 2 diabetes mellitus and DN. The association between rs12255372 polymorphism and DN was a mere reflection of a complicated diabetes mellitus rather than a direct independent association.

2021 ◽  
Author(s):  
Nezaket COBAN ◽  
Aysegul Bayramoglu ◽  
Zeynep TEMIZ

Abstract Type 2 diabetes mellitus (T2DM) is very common worldwide and genetically heterogeneous. One of the microvascular complications is diabetic nephropathy (DN). In recent years, T2DM has been described as a disease caused by chronic inflammation. The imbalance between pro- and anti-inflammatory cytokines causes inflammation. One of the candidate genes associated with T2DM and DN is the Interleukin-6 (IL-6) gene, one of the pro-inflammatory cytokines. This study was conducted to determine the polymorphism frequencies of the IL-6 gene rs1800796 and investigate the role of this polymorphism in the development of T2DM and DN. Genomic DNA that was obtained from 261 people was used in the study. IL-6 gene rs1800796 polymorphism was determined using the PCR, restriction fragment length polymorphism (RFLP) and electrophoresis. IL-6 gene PCR products were discontinued by treatment with restriction enzyme BsrBI and were analyzed in 2% agarose gel electrophoresis. IL-6 (Bioassay technology laboratory, Shangai, China) level was examined by enzyme-linked immunosorbent assay (ELISA) using a commercial kit. The results were statistically analyzed. The frequencies of rs1800796 genotypes were found to be GG 70.7%, GC 28.5%, CC 0.8% in the control group and GG 87.8%, GC 9.9 %, CC 2.3% in T2DM patients. Although there was a statistically significant difference between the control group and the T2DM patient group in genotype and allele frequencies, there was no significant difference in DN. The G allele frequency was also significantly higher in the T2DM group (p=0.000). IL-6 levels were determinated increased in patients with Type-2 diabetes compared to the control group. However; there was no significant statistically. We can say that IL-6 rs1800796 polymorphism is related to T2DM and G allele can be used as a useful genetic marker; this polymorphism is not related to DN, though.


2021 ◽  
Author(s):  
Noran Talaat Aboelkhair ◽  
Heba Elsayed Kasem ◽  
Amera Anwar Abdelmoaty ◽  
Rawhia Hassan Eledel

Abstract Background: Type 2 Diabetes Mellitus (T2DM) is a chronic metabolic condition with various genetics and environmental influences that affects the capacity of the body to produce or use insulin resulting in hyperglycemia, which may lead to variable complications. It is one of the world’s rising health problems. There is emerging evidence that some genetic polymorphisms can impact the risk of evolving T2DM. We try to determine the relationship of (rs7903146) variant of the Transcription factor 7-like 2 (TCF7L2) gene with T2DM and its microvascular complications.Methods and Results: This case-control study included 180 subjects: 60 diabetic patients without complications, 60 diabetic patients with microvascular complications and 60 matched healthy controls. Genotypes of rs7903146 (C/T) SNP in the TCF7L2 gene were evaluated by real-time polymerase chain reaction via TaqMan allelic discrimination. Logistic regression was used to detect the most independent factor for development of diabetes and diabetic microvascular complications. Variant homozygous TT and heterozygous TC genotypes were significantly increased in diabetic without complications and diabetic with complications groups than controls (p=0.003, 0.001) respectively. The T allele was more represented in both patient groups than controls with no significant difference between patient groups. TT genotype as well as T allele was significantly associated with increased T2DM risk.Conclusion: The T allele of rs7903146 polymorphism of TCF7L2 confers susceptibility to development of T2DM. However, no significant association was found for diabetic complications.


Folia Medica ◽  
2019 ◽  
Vol 61 (1) ◽  
pp. 69-75
Author(s):  
Serdar Olt ◽  
Orhan Öznas ◽  
Haydar Bağış ◽  
Eda Tahir Turanlı

Abstract Background: Previous studies have shown that chemerin has important roles in the development of obesity, insulin resistance, metabolic syndrome, polycystic ovary syndrome (PCOS) and T2DM. The main goal of our study was to investigate the role of Chemerin rs17173608 gene polymorphism in T2DM (type 2 diabetes mellitus). Materials and methods: 100 patients with T2DM and 50 healthy volunteers were included in the present study. DNA isolation from blood samples was performed with K1820-02 DNA Mini Kit. Chemerin gene polymorphism was detected by Tetra- Amplification Refractory mutation system polymerase chain reaction (T-ARMS-PCR). At the end of T-ARMS-PCR, samples were run using gel electrophoresis. Some samples were validated by sequence analysis. Results: In the genotype analysis, 18.0% of patients had TT genotype and 81.0% of TG genotype was detected. GG genotype was not detected in any patient. Genotype of 1 patient was unidentified. Genotype distribution of healthy control group was 12.0% TT genotype and 88.0% TG genotype. Similar to the T2DM group, the GG genotype was not detected in the control group. There was no statistically significant difference between T2DM group and healthy control group for TG and TT genotypes. Conclusion: To our knowledge, chemerin rs17173608 gene polymorphism has been investigated in T2DM for the first time herein. In the present study, the TT genotype ratios were higher in the T2DM subjects than in healthy subjects. G allele frequency in the T2DM group was lower than that in the control group. However, there was no statistically significant difference between the groups.


2020 ◽  
Vol 36 (5) ◽  
Author(s):  
Nervana M. K. Bayoumy ◽  
Mohamed M. El‐Shabrawi ◽  
Ola F. Leheta ◽  
Alaa El‐Din M. Abo El‐Ela ◽  
Hamdy H. Omar

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Kholoud Shalaby ◽  
Rania Bahriz ◽  
Nancy Mahsoub ◽  
Mohammed M. El-Arman ◽  
Ghada El-Said

Abstract Background Matrix metalloproteinase 9 (MMP-9) is an important inflammatory marker in diabetic nephropathy. Many studies assessed the association between MMP-9 gene polymorphism and different microvascular complications of type 2 diabetes mellitus, though the results were inconclusive and need further exploration. Our study aimed to assess the association between MMP-9 -1562C/T gene polymorphism and diabetic nephropathy in patients with type 2 diabetes mellitus. Results Taking CC genotype of rs3918242 (MMP-9-1562C/T SNP) as the reference genotype and C as the reference allele, TT genotype, T allele showed significantly lower frequency in diabetic nephropathy group than without nephropathy (2.9% versus 20%, 20% versus 35.7% respectively), with the possible significant protective effect against diabetic nephropathy development (OR = 0.269, 0.450 respectively); it was considered as an independent predictor for diabetic nephropathy occurrence. Conclusions This study suggested that T allele of MMP-9 -1562C/T single nucleotide polymorphism had a protective role against diabetic nephropathy development and also had a role for early prediction of patients susceptible to this complication, so it helps in prevention and management of those patients.


Folia Medica ◽  
2017 ◽  
Vol 59 (3) ◽  
pp. 261-269 ◽  
Author(s):  
Maja Šeruga ◽  
Stojan Kariž ◽  
Jana Makuc ◽  
Matej Završnik ◽  
Ines Cilenšek ◽  
...  

AbstractBackground:Diabetic nephropathy (DN) is a major microvascular complication of type 2 diabetes mellitus (T2DM). Several lines of evidence implicate the endothelin (ET) system in the pathophysiology of DN. The aim of the present study was to analyze if genetic polymorphisms of the ET-1 (EDN1) gene affect susceptibility to DN in Caucasians with T2DM.Materials and methods:The study population consisted of 651 Caucasian subjects with T2DM of more than 10 years’ duration: 276 patients with DN (cases) and 375 patients without evidence of DN (controls). Polymorphisms in ET-1 (EDN1) gene, rs5370, rs1476046, and rs3087459, were studied.Results:Genotype distributions of the studied polymorphisms showed no significant difference between cases and controls.Conclusions:We provide evidence that the rs5370, rs1476046, and rs3087459 polymorphisms ofEDN1gene are not risk factors for DN in Caucasians with T2DM.


Meta Gene ◽  
2019 ◽  
Vol 20 ◽  
pp. 100561 ◽  
Author(s):  
Shania Abidi Nee Abbas ◽  
Syed Tasleem Raza ◽  
Snober S. Mir ◽  
Zeba Siddiqi ◽  
Alina Zaidi ◽  
...  

2019 ◽  
Vol 41 (4) ◽  
pp. 509-517 ◽  
Author(s):  
Mohamed Elsheikh ◽  
Khaled A Elhefnawy ◽  
George Emad ◽  
Mabrouk Ismail ◽  
Maher Borai

Abstract Introduction: Although microalbuminuria remains the gold standard for early detection of diabetic nephropathy (DN), it is not a sufficiently accurate predictor of DN risk. Thus, new biomarkers that would help to predict DN risk earlier and possibly prevent the occurrence of end-stage kidney disease are being investigated. Objective: To investigate the role of zinc-alpha-2-glycoprotein (ZAG) as an early marker of DN in type 2 diabetic (T2DM) patients. Methods: 88 persons were included and classified into 4 groups: Control group (group I), composed of normal healthy volunteers, and three patient groups with type 2 diabetes mellitus divided into: normo-albuminuria group (group II), subdivided into normal eGFR subgroup and increased eGFR subgroup > 120 mL/min/1.73m2), microalbuminuria group (group III), and macroalbuminuria group (group IV). All subjects were submitted to urine analysis, blood glucose levels, HbA1c, liver function tests, serum creatinine, uric acid, lipid profile and calculation of eGFR, urinary albumin creatinine ratio (UACR), and measurement of urinary and serum ZAG. Results: The levels of serum and urine ZAG were higher in patients with T2DM compared to control subjects and a statistically significant difference among studied groups regarding serum and urinary ZAG was found. Urine ZAG levels were positively correlated with UACR. Both ZAG levels were negatively correlated with eGFR. Urine ZAG levels in the eGFR ˃ 120 mL/min/1.73m2 subgroup were higher than that in the normal eGFR subgroup. Conclusion: These findings suggest that urine and serum ZAG might be useful as early biomarkers for detection of DN in T2DM patients, detectable earlier than microalbuminuria.


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