scholarly journals Metformin prevented high glucose-induced endothelial reactive oxygen species via OGG1 in an AMPKα-Lin-28 dependent pathway

2020 ◽  
Author(s):  
Liangliang Tao ◽  
Xiucai Fan ◽  
Jing Sun ◽  
Zhu zhang
Keyword(s):  
High Glucose ◽  
Vascular Function ◽  
Umbilical Vein ◽  
Vascular Complications ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Umbilical Vein Endothelial Cells ◽  
Dependent Pathway

AbstractMetformin improved vascular function in obese type 2 diabetic patients. 8-oxoguanine glycosylase (OGG1), a main DNA glycosylase, was involved in vascular complications in diverse diseases. However, whether metformin suppressed endothelial ROS via OGG1 pathway was unclear. Human umbilical vein endothelial cells (HUVECs) were exposed to HG (high glucose) or HG with metformin. OGG1 and AMPfα levels were measured after metformin treatment while HG-caused ROS was measured by DHE prober. Diabetic mice were induced by daily intraperitoneal injections of streptozotocin (STZ). Metformin reduced Endothelial ROS caused by HG via upregulating OGG1. Additionally, OGG1 protein expression was dependent on its mRNA stability, which was reversed by genetic inhibition of AMPKα and Lin-28. The role of OGG1 on ROS stimulated by HG was partially dependent on NFKB/NOX4 pathway in HUVECs. These results suggested that metformin contacted HG-induced endothelial ROS via AMPKα/Lin-28/OGG1 pathway.

scholarly journals Novel insights into DNA methylation and its critical implications in diabetic vascular complications

2017 ◽  
Vol 37 (2) ◽  
Author(s):  
Jia Zheng ◽  
Jing Cheng ◽  
Qian Zhang ◽  
Xinhua Xiao
Keyword(s):  
Dna Methylation ◽  
Vascular Complications ◽  
Metabolic Memory ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Diabetic Vascular Complications ◽  
Underlying Mechanisms ◽  
Prevention Of Diabetes

Recent epidemiological and clinical studies have shown that type 2 diabetic patients can develop diabetic vascular complications even after intensive glycaemic control. It has been suggested that this phenomenon could be explained by the hypothesis of ‘metabolic memory’. The underlying mechanisms between these enduring effects and the prior hyperglycaemic state are still not well understood. Preliminary studies demonstrate that hyperglycaemia can regulate gene expression by epigenetic modifications, such as DNA methylation, which can persistently exist even after glucose normalization. Increasing evidence shows that epigenetic mechanisms may play a substantial role in the pathophysiology of diabetes and its associated vascular complications, including atherosclerosis, diabetic cardiomyopathy (DCM), nephropathy and retinopathy. In this review, we will examine the growing role of DNA methylation in diabetes and its vascular complications, thus it can provide critical implications for the early prevention of diabetes and its vascular complications.

Role of Oxidative Stress and Mitochondrial Dysfunction in Skeletal Muscle in Type 2 Diabetic Patients

2016 ◽  
Vol 22 (18) ◽  
pp. 2650-2656 ◽  
Author(s):  
Noelia Diaz-Morales ◽  
Susana Rovira-Llopis ◽  
Irene Escribano-Lopez ◽  
Celia Bañuls ◽  
Sandra Lopez-Domenech ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Skeletal Muscle ◽  
Mitochondrial Dysfunction ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Type 2 Diabetic

Evaluation of apolipoprotein E secretion by macrophages in type 2 diabetic patients: role of HDL and apolipoprotein A-I

2005 ◽  
Vol 69 (2) ◽  
pp. 124-128 ◽  
Author(s):  
Kazumi Yamato ◽  
Naoki Tamasawa ◽  
Hiroshi Murakami ◽  
Jun Matsui ◽  
Jutaro Tanabe ◽  
...  
Keyword(s):  
Apolipoprotein E ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Apolipoprotein A ◽  
Type 2 Diabetic

Hyperhomocysteinemia and elevated ox-LDL in Tunisian type 2 diabetic patients: Role of genetic and dietary factors

2007 ◽  
Vol 40 (13-14) ◽  
pp. 1007-1014 ◽  
Author(s):  
N. Koubaa ◽  
A. Nakbi ◽  
M. Smaoui ◽  
N. Abid ◽  
R. Chaaba ◽  
...  
Keyword(s):  
Dietary Factors ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Type 2 Diabetic

scholarly journals Hypertension and Micro-Vascular Complications Among Type 2 Dm Adult Patients in Mukalla, Yemen

2020 ◽  
Vol 3 (5) ◽  
pp. 01-04
Author(s):  
Abdullah Ghouth
Keyword(s):  
Care Center ◽  
Vascular Complications ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Cross Sectional ◽  
Health Care Center ◽  
Age Related ◽  
Significant Difference ◽  
High Prevalence

The Background and Purpose: to assess the prevalence of hypertension and micro-vascular complications among type 2 diabetic patients registered in primary health care center in Mukalla city at eastern Yemen. Methods: A Cross-sectional study was conducted in a randomly selected eligible patients from the diabetic registry of the AL Noor Charity Center (ACC), Mukalla city in Yemen. Results: Prevalence of hypertension in the T2DM patients were 46.7% (56/120). Retinopathy is the most micro-vascular complications among the adults having T2DM (73/120, 60.8%) while nephropathy is the least prevalence (13/120, 10.8%), prevalence of neuropathy was 49.2% (59/120). a high prevalence of retinopathy in males (66%) than females (55.7%) and a high prevalence of neuropathy in male adults (52.2%) than females (46%).No statistical significant difference were exit related to gender for any studied complications. Similar findings were observed regarding age related variations. Conclusion: A high prevalence of hypertension, retinopathy and neuropathy were reported among T2DM patients in Mukalla. Adopting effective and safe treatment strategies are highly recommended to prevent premature death and complications due to DM.

Investigating ADAMTS7 and ADAMTS12 levels in prediabetic and Type 2 diabetic patients

2021 ◽  
Author(s):  
Mercan Taştemur ◽  
Selvihan Beysel ◽  
Sema Hepşen ◽  
Sanem Öztekin ◽  
Erman Çakal ◽  
...  
Keyword(s):  
Inflammatory Markers ◽  
Diabetic Patients ◽  
Control Groups ◽  
Type 2 Diabetic Patients ◽  
Human Enzyme ◽  
Significant Difference ◽  
And Control ◽  
Type 2 Diabetic

Background: This study aims to investigate the role of ADAMTS7 and ADAMTS12 on atherosclerosis and inflammation in prediabetic and diabetic patients. Patients & methods: Serum ADAMTS7 and ADAMTS12 levels were compared with the atherosclerotic and inflammatory markers in diabetic (n = 65, female 30.9%, mean age = 53 years), prediabetic (n = 55, female 36.6%, mean age = 49 years) and control groups (n = 55, females 32.5%, mean age = 49 years). Serum ADAMTS levels were determined by a human enzyme-liked immunoassay. Results: In terms of ADAMTS7, there was no significant difference between diabetic, prediabetic and control groups (50.93, 44.34, 59.07, respectively; p > 0.05). ADAMTS12 is lower in diabetics (p < 0.05), whereas it is similar in prediabetics and controls (14.53, 20.76, 25.05, respectively; p > 0.05). ADAMTS7 and ADAMTS12 levels did not differ in diabetic nephropathy, retinopathy and neuropathy (p > 0.05). Conclusion: While ADAMTS12 was significantly lower in diabetics and prediabetics, ADAMTS7 and ADAMTS12 were not related to diabetic complications (nephropathy, retinopathy and neuropathy).

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