scholarly journals Synergistic Effect of the MTHFR C677T and EPHX2 G860A Polymorphism on the Increased Risk of Ischemic Stroke in Chinese Type 2 Diabetic Patients

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Liang Ma ◽  
Yongwei Jiang ◽  
Xiaomu Kong ◽  
Meihua Yan ◽  
Tingting Zhao ◽  
...  

The aim of this study was to investigate the relationship between the combined effect of MTHFR C677T (rs1801133) and EPHX2 G860A (rs751141) polymorphism and ischemic stroke in Chinese T2DM patients. This case-control study included a total of 626 Chinese T2DM patients (236 T2DM patients with ischemic stroke and 390 T2DM patients without ischemic stroke). The rs1801133 and rs751141 were genotyped using real-time polymerase chain reaction. Statistical analysis was performed with SPSS 17.0. Results showed that the combined effect of MTHFR TT and EPHX2 GG or GA + AA genotype has a higher risk of ischemic stroke compared with the control group (combined effect of MTHFR CC and EPHX2 GA + AA genotypes; OR = 3.46 and OR = 3.42, resp.; P=.001 and P=.002, resp.). The A allele showed marked association with a lower risk of ischemic stroke in patients with the lowest Hcy levels under additive, recessive, and dominant genetic models (OR = 0.45, OR = 0.11, and OR = 0.44, resp.; P=.002, P=.035, and P=.008, resp.), which was not observed in medium or high Hcy level groups. In conclusion, the T allele of rs1801133 and the G allele of rs751141 may be risk factors of ischemic stroke in the Chinese T2DM population.

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Liang Ma ◽  
Meihua Yan ◽  
Xiaomu Kong ◽  
Yongwei Jiang ◽  
Tingting Zhao ◽  
...  

The aim of this study was to investigate the relationship between EPHX2 rs751141 (R287Q polymorphism) and diabetic nephropathy (DN) in Chinese type 2 diabetes (T2D). This case-control study explored the association between EPHX2 rs751141 and DN in a total of 870 Chinese T2D patients (406 T2D patients with DN and 464 T2D patients without DN). DNA was extracted from peripheral leukocytes of the patients and rs751141 was genotyped. The A allele frequency of rs751141 was significantly lower in DN patients (20.94%) compared with non-DN controls (27.8%) (P=0.001), and the A allele of rs751141 was associated with a significantly lower risk of DN after adjustment for multiple covariates in the additive genetic model (OR = 0.68, 95% CI = 0.52–0.88, P=0.004). Significant association between rs751141 and homocysteine (Hcy) level on the risk of DN was observed, indicating that in patients with the highest Hcy levels, the A allele showed marked association with lower risk of DN in all three genetic models. In conclusion, the A allele of exonic polymorphism in EPHX2 rs751141 is negatively associated with the incidence of DN in the Chinese T2D population, which could be modulated by Hcy level status.


2021 ◽  
Vol 17 ◽  
Author(s):  
Mehdi Kushkestani ◽  
Mohsen Parvani ◽  
Yaser Kazemzadeh

: SARS-COV-2 is the novel type of beta coronavirus that was first seen in December 2019 in Wuhan, China. Type 2 Diabetics are one of the groups most vulnerable to SARS-COV-2 and its associated complications. Many factors such as medication, pathophysiologic-induced compensatory mechanisms, and alterations in protein expression and immune system function can all contribute to severe outcomes in diabetics. In this review article, we first described the possible mechanisms of increased risk and more severe complications rate of SARS-COV-2 in diabetic patients. Secondly, we discussed the crucial roles of exercise in diabetic patients and in balancing of RAS system (ACE2/ACE). Finally, we showed the possible roles of acute and chronic exercise in reducing SARS-COV-2 severe outcomes in diabetics in accordance with the latest evidence. We concluded that regular exercise (especially moderate-intensity exercise) can play immune enhancing, anti-inflammatory, anti-oxidation roles and can balance ACE2/ACE ratio (decreasing ANG2 levels) in diabetic subjects.


2008 ◽  
Vol 27 (3) ◽  
pp. 376-382 ◽  
Author(s):  
Tatjana Cvetković ◽  
Predrag Vlahović ◽  
Vidosava đorđević ◽  
Lilika Zvezdanović ◽  
Dušica Pavlović ◽  
...  

The Significance of Urinary Markers in the Evaluation of Diabetic Nephropathy Oxidative stress is considered to be a unifying link between diabetes mellitus (DM) and its complications, including nephropathy (DN). The aim of this study was to determine the parameters of oxidative injury of lipids and proteins as well as the activity of ectoenzymes in the urine of DN patients. The study included 40 individuals: 10 patients with type 2 diabetes mellitus and microalbuminuria (DMT2-MIA), 10 type 2 diabetic patients with macroalbuminuria (DMT2-MAA), 10 patients with type 1 diabetes and microalbuminuria (DMT1-MIA) and 10 age- and sex-matched healthy subjects (control). In the urine we determined TBA reactive substances (TBARS), reactive carbonyl groups (RCG), and the activity of ectoenzymes N-acetyl-β-d-glucosaminidase (NAG), plasma cell differentiation antigen (PC-1), aminopeptidase N (APN) and dipeptidyl peptidase IV (DPP IV). A higher concentration of TBARS in the urine was found in DMT2-MIA and DMT1-MIA, compared to the control group (p<0.001 and P<0.05). The urine concentration of RCD shows similar results with a significant elevation in the groups with DMT2-MAA and DMT1-MIA, compared to the DMT2-MIA (p<0.001) and control group (p<0.001). Activities of NAG, APN and DPPIV were significantly higher in the urine of DMT2-MAA, compared to the control (p<0.01). The activity of PC-1 was slightly increased in that group, but not significantly. In conclusion, the level of oxidative stress markers and activities of brush border ectoenzymes in the urine may be a useful non-invasive and easily repeatable test in DN.


2016 ◽  
Vol 9 (5) ◽  
pp. 234
Author(s):  
Zahra Heidari ◽  
Zahra Sepehri ◽  
Aleme Doostdar

<p>In addition to known risk factors, the role of different micronutrients such as selenium in diabetes incidence has been proposed. Some previous studies have shown an association of selenium deficiency and type 2 diabetes mellitus, while other studies have not confirmed such a relationship. The aim of this study was to evaluate serum level of selenium in patients with Type 2 diabetes compared with the control group. This cross-sectional study was carried out on patients with type 2 diabetes in Zahedan, southeastern Iran. One hundred newly diagnosed type 2 diabetic patients were evaluated for serum selenium level. One hundred subjects from the general population who had normal fasting blood sugar levels were selected as the control group. The control group subjects were matched in pairs with each of patients on the basis of sex, age (± one year), and body mass index (±1). Serum level of selenium was determined by spectrometry method. Results were compared using t-test. The mean serum level of selenium in patients was 94.47±18.07 µg/L whereas in control group was 142.79±23.67 µg/L. The mean serum level of selenium was significantly different between the two groups (P&lt;0.001). Serum levels of selenium in diabetic patients with significant difference statistically were lower than the control group. In order to evaluate serum level of selenium in patients with diabetes, studies with larger sample size are required. Likewise, prospective studies along with selenium supplementation and investigating its effect on incidence of diabetes are accordingly needed.</p>


2010 ◽  
Vol 13 (2) ◽  
pp. 84-89
Author(s):  
Ivan Petrovich Gorshkov ◽  
Vladimir Ivanovich Zoloedov ◽  
Anna Petrovna Volynkina

Aim. To study Actovegin efficacy in oxidative stress (OS) correction at diabetic polyneuropathy (DPN) in patients with diabetes mellitus type 2 (DM2)and arterial hypertension (AH).Materials and Methods. 51 patients (24 women and 27 men) aged 53.4?0.7 with the average duration of DM2 5.6?0.2 years, DPN - 4.9?0.2years and AH - 6.0?0.2 years were examined. Daily albuminuria, glomerular filtration rate (GRF) were evaluated, standard methods for diagnosisof DPN were used. 26 patients took Actovegin therapy during 6-8 weeks, the rest 25 patients were in the control group. Parameters of the OS werestudied. Results. The increase of total oxidative capacity, the decrease of total antioxidant capacity and the rise of levels of antibodies to oxidated LDL wererevealed in patients with DM2, DPN and AH. Antioxidant and anti-hypoxic effects of 400 mg/day of Actovegin were established in this group of patients.Conclusions. Actovegin impacts oxidative stress parameters and improves the clinical manifestation of diabetic polyneuropathy.


Sign in / Sign up

Export Citation Format

Share Document