scholarly journals Correlation of Uric Acid with Oxidative Stress and Endothelial Dysfunction in Type 2 Diabetes Mellitus

2021 ◽  
Author(s):  
Siva Prasad Palem
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Uric Acid ◽  
Endothelial Dysfunction ◽  
P Value ◽  
Healthy Controls ◽  
Antioxidant Power

Objective: To evaluate the correlation of uric acid with oxidative stress and endothelial dysfunction in type 2 diabetic subjects.Material and Methods: The study included 120 subjects, among when 60 were type 2 diabetes subjects and the remaining 60 were age and gender matched healthy controls. The biochemical parameters, blood glucose, lipid profile, uric acid and homocysteine, were measured by standard kits in an autoanalyzer. Oxidative stress was evaluated by measuring malondialdehyde (MDA) and total antioxidant power by manual methods such as thio-barbituric acid reactive substances and ferric reducing ability of plasma (FRAP). Endothelial dysfunction was assessed by measuring nitric oxide (NO) by the kinetic cadmium method.Results: A significant elevation of triglycerides, low density lipoprotein (LDL), and MDA were observed in the type 2 diabetes mellitus patients while FRAP and NO were significantly reduced compared to the healthy controls. In addition, the uric acid levels had a highly significant correlation with FRAP (r=0.212, p-value=0.020), and moderately significant correlation with triglycerides (r=0.173, p-value=0.057) and homocysteine (r=0.178, p-value=0.051). Uric acid was negatively correlated with MDA and positively correlated with NO, but not statistically significant.Conclusion: Our findings suggest that uric acid may have antioxidant properties since it had a significant positive correlation with FRAP.

Antioxidant Activity of Uric Acid and its Correlation with Oxidative Stress and Endothelial Dysfunction in Type 2 Diabetes Mellitus

2020 ◽  
Author(s):  
P. Siva Prasad ◽  
P. Hari Prasad ◽  
T. Sudhakar ◽  
B. Rajkumar ◽  
Adithya Raj ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Antioxidant Activity ◽  
Type 2 Diabetes Mellitus ◽  
Uric Acid ◽  
Endothelial Dysfunction ◽  
Healthy Control ◽  
Type 2 Diabetic

Abstract Objective: Uric acid is an end product of purine metabolism and it has two different functions such as pro-oxidant and anti-oxidant. Where, pro-oxidant and anti-oxidants are opposite in action. Oxidative stress and endothelial dysfunction are a foremost cause of complications in diabetes mellitus, where uric acid may play a major role in this process. Hence, the present study has been designed to evaluate antioxidant activity of uric acid and its correlation with oxidative stress and endothelial dysfunction in type 2 diabetic subjects. Methods: We included 120 subjects in this study with age group of 39 -60 years. Among these 60 were type 2 diabetic subjects and 60 were healthy controls. The estimation of biochemical parameters such as blood sugar, lipid profile, uric acid, and homocysteine are measured in fully auto-analyzer with well recognized methods. MDA measured by TBARS method, total antioxidant capacity as FRAP and NO estimated by Kinetic cadmium method in spectrophotometer. Results: The study was found significant elevation of triglyceride, LDL and MDA and significant lower level of FRAP and NO in T2DM than healthy control. Uric acid was insignificant in T2DM compared to healthy control. However, uric acid has significant correlation with FRAP (r=0.2116, p=0.02) and moderate correlation with triglyceride (r=0.1736, p=0.0579) and homocysteine (r=0.1779, p=0.0519). MDA was negatively and NO was positively correlated with uric acid but statistically insignificant. Conclusion: We have found antioxidant activity of uric acid where it was determined by significant positive correlation with FRAP in type 2 diabetes mellitus.

scholarly journals GTP Cyclohydrolase I Gene Polymorphisms Are Associated with Endothelial Dysfunction and Oxidative Stress in Patients with Type 2 Diabetes Mellitus

PLoS ONE ◽  
2014 ◽  
Vol 9 (11) ◽  
pp. e108587 ◽  
Author(s):  
Pawel P. Wolkow ◽  
Wladyslaw Kosiniak-Kamysz ◽  
Grzegorz Osmenda ◽  
Grzegorz Wilk ◽  
Beata Bujak-Gizycka ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Endothelial Dysfunction ◽  
Gene Polymorphisms ◽  
Gtp Cyclohydrolase I ◽  
And Oxidative Stress ◽  
I Gene

scholarly journals A STUDY OF SERUM URIC ACID LEVELS IN TYPE 2 DIABETES MELLITUS CASES AND ITS COMPARISON WITH THE SERUM CREATININE LEVELS

2021 ◽  
pp. 20-22
Author(s):  
Shajahan Shajahan ◽  
Koneru Sri Lahari ◽  
P. Kiranmai
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Uric Acid ◽  
Serum Creatinine ◽  
Serum Uric Acid ◽  
Fasting Blood Glucose ◽  
Control Group ◽  
P Value

BACKGROUND:Type 2 Diabetes Mellitus is a major non-communicable disease resulting from insulin resistance and is associated with cardiovascular,neurological and renal complications.Recent studies show association of hyperuricemia and Diabetes Mellitus.Uric acid increases oxidative stress that leads to vascular dysfunction and high intra glomerular pressure leading to renal complications.High serum creatinine is an indicator of renal compromise. OBJECTIVES: To evaluate serum uric acid and serum creatinine levels in type 2 diabetes mellitus patients and to find association between them. METHODOLOGY: The study was conducted in Osmania general hospital. Fifty cases of established Type 2 Diabetes Mellitus formed the study group and 50 normal healthy individuals formed the control group. Serum uric acid, Fasting Blood Glucose (FBS) and serum creatinine were estimated by colorimetric enzymatic methods on Beckman coulter AU5800.Mean values were compared in cases and controls using student t- test.Study group was further studied under 2 subgroups with serum Uric acid < 7 mg/dl and ≥7 mg/dl.In these 2 subgroups the association of Serum uric acid with FBS and creatinine was analysed statistically. RESULTS: Serum uric acid were found high in cases(7.63+/- 3.36)as compared to controls(4.48+/- 1.09) p value < 0.001.Serum creatinine were also high in cases(1.59+/- 1.39 )as compared to controls ( 0.87+/- 0.29) p value <0.005.Study subgroup with serum uric acid ≥7 mg/dl was associated with high creatinine and high fasting blood sugar levels when compared to subgroup with serum uric acid <7 mg/dl. CONCLUSION: Our study showed increased serum uric acid and serum creatinine levels in cases when compared to controls.There was significant association between high serum uric acid and high creatinine levels in cases.Therefore,it is important to measure serum uric acid and serum creatinine levels in diabetics for early detection of renal pathology.

scholarly journals Association of 45-bp ins/del polymorphism of uncoupling protein 2 (UCP2) and susceptibility to nonalcoholic fatty liver and type 2 diabetes mellitus in North-west of Iran

2020 ◽  
Author(s):  
Salehe Rezapour ◽  
Shiva Ahdi Khosroshahi ◽  
Hadi Farajnia ◽  
Fatemeh Mohseni ◽  
Manouchehr Khoshbaten ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Fatty Liver ◽  
Uncoupling Protein ◽  
P Value ◽  
Uncoupling Protein 2 ◽  
Genotype Distribution ◽  
Healthy Controls

Abstract Objective: Uncoupling protein 2 (UCP2) plays a crucial role in energy homeostasis via regulation of insulin secretion, free fatty acid concentrations, and lipid metabolism. This study aimed to investigate the association of 45-bp ins/del polymorphism of UCP2 with susceptibility to NAFLD (Non Alcoholic Fatty Liver Disease) and T2DM (Type 2 Diabetes Mellitus). DNA was extracted from the white blood cells of the subjects, and the gene polymorphism was determined using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). In this study, 72 patients with NAFLD, 71 healthy individuals as control, 80 patients with T2DM, and 77 healthy controls were enrolled in the study.Results: A higher prevalence of insertion/insertion genotype was observed in T2DM patients compared to the controls (p- value˂ 0.05). But, there was no difference in genotype distribution between NAFLD patients and controls (p-value> 0.05). NAFLD patients with D/D, D/I genotype had higher triglyceride, ALT, and AST levels; however, their HDL levels were lower than healthy controls. Patients with T2DM with D/D or D/I genotype also had significantly higher fasting serum glucose (FSG). While we found an association between the 45bp I/D polymorphism in 3ʹUTR of UCP2 and T2DM, no any correlation between this polymorphism and NAFLD was identified.

scholarly journals Histone deacetylase 3 inhibition alleviates type 2 diabetes mellitus-induced endothelial dysfunction via Nrf2

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Shuai Huang ◽  
Gen Chen ◽  
Jia Sun ◽  
Yunjie Chen ◽  
Nan Wang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Endothelial Dysfunction ◽  
Histone Deacetylase ◽  
Vascular Endothelium ◽  
Ros Production ◽  
Histone Deacetylase 3

Abstract Background The mechanism underlying endothelial dysfunction leading to cardiovascular disease in type 2 diabetes mellitus (T2DM) remains unclear. Here, we show that inhibition of histone deacetylase 3 (HDAC3) reduced inflammation and oxidative stress by regulating nuclear factor-E2-related factor 2 (Nrf2), which mediates the expression of anti-inflammatory- and pro-survival-related genes in the vascular endothelium, thereby improving endothelial function. Methods Nrf2 knockout (Nrf2 KO) C57BL/6 background mice, diabetic db/db mice, and control db/m mice were used to investigate the relationship between HDAC3 and Nrf2 in the endothelium in vivo. Human umbilical vein endothelial cells (HUVECs) cultured under high glucose-palmitic acid (HG-PA) conditions were used to explore the role of Kelch-like ECH-associated protein 1 (Keap1) –Nrf2–NAPDH oxidase 4 (Nox4) redox signaling in the vascular endothelium in vitro. Activity assays, immunofluorescence, western blotting, qRT-PCR, and immunoprecipitation assays were used to examine the effect of HDAC3 inhibition on inflammation, reactive oxygen species (ROS) production, and endothelial impairment, as well as the activity of Nrf2-related molecules. Results HDAC3 activity, but not its expression, was increased in db/db mice. This resulted in de-endothelialization and increased oxidative stress and pro-inflammatory marker expression in cells treated with the HDAC3 inhibitor RGFP966, which activated Nrf2 signaling. HDAC3 silencing decreased ROS production, inflammation, and damage-associated tube formation in HG-PA-treated HUVECs. The underlying mechanism involved the Keap1–Nrf2–Nox4 signaling pathway. Conclusion The results of this study suggest the potential of HDAC3 as a therapeutic target for the treatment of endothelial dysfunction in T2DM.

scholarly journals Correlation of glycosylated hemoglobin with urinary albuminuria for early detection and progression of nephropathy in patients with type 2 diabetes millitus

2021 ◽  
Vol 8 (4) ◽  
pp. 433-436
Author(s):  
Ravikumar Malladad ◽  
Rashmi G S Basavaraj
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Uric Acid ◽  
Early Detection ◽  
Continuous Monitoring ◽  
Glycosylated Hemoglobin ◽  
Urinary Albumin ◽  
Healthy Controls

diabetic nephropathy is a one of the most leading disorder in patients with type 2 diabetes mellitus. Urinary albuminuria used for detection of nephropathy in type 2 diabetes mellitus but its not an a sensitive and specific biomarker for DN. Recent studies found some of the sensitive and specific biomarker for early detection and progression of nephropathy in type 2 diabetes mellitus patients. A total 150 subjects included in the present study in that 100 patients diagnosed with type 2 diabetes mellitus and 50 healthy controls. All the subjects included after informed consent and blood, urine samples were collected from the all the subjects. FBS, PPBS, Urea, Creatinine, Uric acid, HbA1C and Urinary Albumin was analysed by using laboratory standard methods. statistically elevated levels of plasma FBS, PPBS, HbA1C in both the groups of type 2 diabetes mellitus when compared to healthy controls. Serum Urea, Creatinine and Uric Acid levels elevated in type 2 diabetes mellitus with microalbuminuria when compared to other two groups of study subjects. The Glycosylated hemoglobin positively correlated with urinary microalbuminuria in patients with two groups of type 2 diabetes mellitus. This study suggest that the poor glycemic control leads to increased further complications in patients with type 2 diabetes mellitus. Continuous monitoring of HbA1C and Urinary Albumin Levels were useful for progression and treatment of patients with type 2 diabetes mellitus.

scholarly journals HbA1c is a risk factor for cardiovascular disease in association with oxidative stress in patients with type 2 diabetes mellitus

2017 ◽  
Vol 5 (7) ◽  
pp. 3114 ◽  
Author(s):  
Siva Prasad Palem
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Cardiovascular Disease ◽  
Type 2 Diabetes Mellitus ◽  
Risk Factor ◽  
Healthy Controls ◽  
High Level ◽  
Type 2 Diabetic

Background: Cardiovascular disease (CVD) is a major cause of death in diabetic subjects. Glycaemic status is one of the vital factor involved in vascular complications. It was clear the effect of glycaemia on microvascular complications, but uncertain on macrovascular complications. As we know oxidative stress plays a major role in the development of atherosclerosis and cardiovascular disease. Since oxidative stress is a risk factor for cardiovascular disease, the study has designed to perceive an association between HbA1c and oxidative stress in patients with type 2 diabetes mellitus for early prediction of cardiovascular events.Methods: 120 subjects were taken into the study, among these 60 type 2 diabetic subjects and remaining 60 subjects were healthy controls. The parameters like HbA1c, MDA and FRAP were estimated by established methods. ‘Kruskal Wallis’ test was used for variables in the parameters and Pearson correlation test was used to perform correlation between HbA1c and oxidative stress.Results: High level of HbA1c and MDA, low level of FRAP were found in patients with type 2 diabetes than healthy controls. The study was also found HbA1c have positive association with malondialdehyde (MDA) and negative association with FRAP.Conclusions: HbA1c was positively associated with oxidative stress in patients with type 2 diabetes mellitus. In this scenario, type 2 diabetic patients with high level of HbA1c might have risk of cardiovascular events.

scholarly journals Age-dependent systemic DNA damage in early Type 2 Diabetes mellitus

2017 ◽  
Vol 64 (2) ◽  
Author(s):  
Dinko Rogulj ◽  
Ismail El Aklouk ◽  
Konjevoda Paško ◽  
Spomenka Ljubić ◽  
Mirjana Pibernik Okanović ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Dna Damage ◽  
Type 2 Diabetes Mellitus ◽  
Uric Acid ◽  
Oxidative Dna Damage ◽  
Ldl Cholesterol ◽  
Age Dependent

Oxidative stress, capable of eliciting damage to various biomolecules including DNA, is a recognized component of diabetes mellitus and its complications. Metabolic syndrome  (MetS) is associated with the development of type 2 diabetes mellitus  (T2DM), as well as other unfavorable outcomes. The aim of this study was to elucidate the role of oxidative stress in the development of T2DM, by investigating association of oxidative DNA damage with metabolic parameters in subjects with MetS and early T2DM.Selected anthropometric and biochemical parameters of MetS, inflammation and oxidative DNA damage: body mass index  (BMI), fatty liver index  (FLI), waist circumference  (WC), total cholesterol, HDL  and LDL-cholesterol, GGT, uric acid, total leukocyte/neutrophil count,  and urinary 8-oxo-deoxyguanosine  (u-8-oxodG) were assessed in male subjects with MetS and both younger  (≤55 years) and older  (>55 years) subjects with T2DM of short duration without complications.BMI, FLI, WC, total and LDL-cholesterol and  uric acid were higher, while the u-8-oxodG was lower in MetS group, when compared to older T2DM subjects. None of these parameters were different neither between MetS and younger T2DM, nor between two sub-groups of subjects with T2DM. Values of CRP, HDL-cholesterol, triglycerides, GGT, leukocytes and neutrophils were not different between all examined groups of subjects. Age-dependent increase in u-8-oxodG suggests that aging process, rather than metabolic disturbances or diabetes per se plays a pivotal role in development of oxidative DNA-damage in T2DM. Oxidative DNA damage cannot serve as an universal early marker of T2DM.

Serum Pro-oxidant-Antioxidant Balance in subjects with Type 2 Diabetes Mellitus

2020 ◽  
Vol 23 ◽  
Author(s):  
Mahsa Ahmadnezhad ◽  
Hamideh Ghazizadeh ◽  
Moniba Bijari ◽  
Mohammad Reza Oladi ◽  
Habibollah Esmaily ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Large Population ◽  
Colorimetric Method ◽  
Multivariable Analysis ◽  
P Value ◽  
Cross Sectional

Aim and Objective:: Diabetes mellitus is associated with inflammation and increased oxidative stress. In the current study, we aimed to investigate the relationship between type 2 diabetes mellitus (T2DM) and serum pro-oxidantantioxidant balance (PAB) in a large population-based study. Methods:: In this cross-sectional study, 7888 individuals recruited as part of the Mashhad Stroke and Heart Atherosclerotic Disorders (MASHAD) cohort study. Participants were divided into three groups, based on their serum PAB values (levels < 36.4, 36.4-82.6 and > 82.6 HK). Serum PAB values were measured using a colorimetric method and enzyme-linked immune sorbent assay (ELISA). Results:: Serum PAB in subjects with and without diabetes was reported 76.85 ± 61.07 HK and 69.51 ± 55.50 HK. In subjects with a serum PAB > 82.6 HK the risk of T2DM was 1.2 fold higher in comparison to subjects with a serum PAB < 36.4 HK (OR: 1.26, 95% CI: 1.09 – 1.47, P-value: 0.002). This association remained significant after adjustment for confounding factors in multivariable analysis (OR: 1.19, 95% CI: 1.02 – 1.38, P-value: 0.027). Conclusion:: Increased pro-oxidant levels may be a major complication of T2DM in our study subjects and PAB could be an indicator of higher oxidative stress in T2DM patients from northeastern Iran.

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