scholarly journals Measurement and Clinical Significance of Lipid Peroxidation as a Biomarker of Oxidative Stress: Oxidative Stress in Diabetes, Atherosclerosis, and Chronic Inflammation

Antioxidants ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 72 ◽  
Author(s):  
Fumiaki Ito ◽  
Yoko Sono ◽  
Tomoyuki Ito
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Risk Factors ◽  
Lipid Peroxidation ◽  
Endothelial Dysfunction ◽  
Chronic Inflammation ◽  
Current Knowledge ◽  
Glycation End Products ◽  
Patients With Diabetes ◽  
Stress Oxidative

Endothelial dysfunction is one of the initial steps in the pathogenesis of atherosclerosis and development of cardiovascular disease in patients with diabetes mellitus. Several risk factors are associated with endothelial dysfunction and atherosclerosis, such as hypertension, dyslipidaemia, inflammation, oxidative stress, and advanced glycation-end products. Among these risk factors, oxidative stress is the largest contributor to the formation of atherosclerotic plaques. Measurement of reactive oxygen species (ROS) is still difficult, and assays for the measurement of ROS have failed to show a consistent correlation between pathological states and oxidative stress. To solve this problem, this review summarizes the current knowledge on biomarkers of oxidative stress, especially lipid peroxidation, and discusses the roles of oxidative stress, as measured by indices of lipid peroxidation, in diabetes mellitus, atherosclerosis, and chronic inflammation.

scholarly journals Pathophysiological Association between Diabetes Mellitus and Endothelial Dysfunction

Antioxidants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1306
Author(s):  
Tatsuya Maruhashi ◽  
Yukihito Higashi
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Endothelial Dysfunction ◽  
Endothelial Function ◽  
Critical Role ◽  
No Production ◽  
Chronic Hyperglycemia ◽  
Dipeptidyl Peptidase 4 Inhibitors ◽  
Patients With Diabetes ◽  
Glucose Fluctuations

Endothelial dysfunction plays a critical role in atherosclerosis progression, leading to cardiovascular complications. There are significant associations between diabetes mellitus, oxidative stress, and endothelial dysfunction. Oxidative stress is increased by chronic hyperglycemia and acute glucose fluctuations induced by postprandial hyperglycemia in patients with diabetes mellitus. In addition, selective insulin resistance in the phosphoinositide 3-kinase/Akt/endothelial nitric oxide (NO) synthase pathway in endothelial cells is involved in decreased NO production and increased endothelin-1 production from the endothelium, resulting in endothelial dysfunction. In a clinical setting, selecting an appropriate therapeutic intervention that improves or augments endothelial function is important for preventing diabetic vascular complications. Hypoglycemic drugs that reduce glucose fluctuations by decreasing the postprandial rise in blood glucose levels, such as glinides, α-glucosidase inhibitors and dipeptidyl peptidase 4 inhibitors, and hypoglycemic drugs that ameliorate insulin sensitivity, such as thiazolidinediones and metformin, are expected to improve or augment endothelial function in patients with diabetes. Glucagon-like peptide 1 receptor agonists, metformin, and sodium-glucose cotransporter 2 inhibitors may improve endothelial function through multiple mechanisms, some of which are independent of glucose control or insulin signaling. Oral administration of antioxidants is not recommended in patients with diabetes due to the lack of evidence for the efficacy against diabetic complications.

scholarly journals Some parameters of the oxidative stress in lens, humour aqueous and serum of patients with diabetes and age-related cataract

2003 ◽  
Vol 131 (3-4) ◽  
pp. 137-142 ◽  
Author(s):  
Lepsa Zoric
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Lipid Peroxidation ◽  
The Body ◽  
Diabetes Mellitus Type ◽  
Type Ii ◽  
Diabetes Mellitus Type Ii ◽  
Age Related ◽  
Lipid Oxidation Products ◽  
Patients With Diabetes

Contemporary hypothesis considers the oxidative stress as a crucial event in age-related processes in the body, as well as in the age-related cataract formation. The secondary aging factors accelerate ageing processes. One of them is diabetes. With the aim of investigation of the noninsulin-dependent diabetes (Type II) influence on cataract genesis here were analyzed contents of the lipid oxidation products (lipid peroxides - LP) and total sulfhydryle groups (TSH) in the lens? corticonuclear blocks and antioxidative capacity in their humour aqueous expressed as percent of induced malondyaldehyde (% iMDA) in 14 samples obtained from patients with cataract and diabetes mellitus type II (without diabetic complications) and compared to 66 samples of patients with cataract without diabetes, as well as some parameters of the oxidative stress in serums (content of vitamin C, acrobat - A dehydroascorbate - DA and their relation, vitamin E, glutathione - GSH peroxidase - P and catalase - Cat activity, content of malondyaldehyde - MDA and % iMDA) of 27 patients with age-related cataract and diabetes mellitus type II (without complications), and compared to the other 135 age-related cataract patients. Also were analyzed frequencies of the secondary senium diseases in a clinical group of 162 patients with cataract and sex and age matched 55 examined people without cataract, as a control group. Patients with diabetes and cataract have lower values of almost all investigated parameters of antioxidative defense in their serum and higher level of the lipid peroxidation products. Level of glutathione in their serums is significantly lower (p<0.05). Intensity of lipid peroxidation in corticonuclear lens blocks is higher in patients with diabetes, whereas their total sulfhydryle groups and % iMDA in humour aqueous shows lower antioxidant capacity in the same group, probably because of higher intensity of oxidative stress. Also, by investigation of frequencies of the secondary ageing diseases in patients with age-related cataract and age and sex matched control subjects, by a logistic regression was found high odds ratio (2.506) for diabetes. Results confirm hypothesis of the oxidative stress role in the age-related cataract genesis, and especially of patients with diabetes mellitus.

scholarly journals Role of oxidative stress, adiponectin and endoglin in the pathophysiology of erectile dysfunction in diabetic and non-diabetic men

2019 ◽  
pp. 623-631 ◽  
Author(s):  
B. Trebatický ◽  
I. Žitňanová ◽  
M. Dvořáková ◽  
Z. Országhová ◽  
Z. Paduchová ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Erectile Dysfunction ◽  
Endothelial Dysfunction ◽  
Erectile Function ◽  
Protein Carbonyls ◽  
Relaxation Processes ◽  
Reactive Protein ◽  
Glycation End Products

Erectile dysfunction (ED) and diabetes mellitus (DM) share common pathophysiological risk factors including endothelial dysfunction which together with hyperglycemia contribute to the increased oxidative/glycooxidative stress. A reduced NO concentration is insufficient for relaxation processes in the penis. Chronic inflammation and endoglin are involved in the regulation of endothelial function. Adiponectin from the adipose tissue has anti-inflammatory effects. Our study aimed to investigate the relation between erectile function in patients with and without DM and the oxidative stress, hormone adiponectin, and endothelial dysfunction marker endoglin. Men (n=32) with ED evaluated by the International Index of Erectile function (IIEF-5) questionnaire (17 without DM (NDM); 15 with type 2 diabetes mellitus (DM)) and 31 controls were included. Advanced glycation end products (AGEs), 8-isoprostanes (8-isoP), protein carbonyls, antioxidant capacity, adiponectin and endoglin were determined in the blood. DM patients compared to NDM patients and controls, had increased levels of glucose, C-reactive protein, triacylglycerols, 8-isoP, AGEs, endoglin and BMI. IIEF-5 score, NO and adiponectin levels were decreased. We are the first to find out that endoglin shows a negative correlation with erectile function in NDM, but not in DM patients. Endoglin can be considered as endothelial dysfunction marker in nondiabetic men suffering from ED.

Risk Factors for Hypoglycemia in Patients with Diabetes Mellitus

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 2271-PUB
Author(s):  
ASAKO MIZOGUCHI
Keyword(s):  
Diabetes Mellitus ◽  
Risk Factors ◽  
Patients With Diabetes

Evaluation of Salivary Antioxidants and Oxidative Stress Markers in Type 2 Diabetes Mellitus: A Retrospective Cohort Study

2020 ◽  
Vol 20 (4) ◽  
pp. 584-590 ◽  
Author(s):  
Shima Fathi ◽  
Shiva Borzouei ◽  
Mohammad Taghi Goodarzi ◽  
Jalal Poorolajal ◽  
Fatemeh Ahmadi-Motamayel
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Control Group ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Type 2 Dm ◽  
Patients With Diabetes ◽  
The Difference ◽  
And Oxidative Stress

Background: Diabetes Mellitus (DM) is a progressive metabolic disorder. Objective: The aim of this study was to investigate the relationship between antioxidant and oxidative stress markers in the saliva of patients with type 2 DM and a healthy control group. Methods: In this study, 20 patients with diabetes and 20 healthy individuals were evaluated. Salivary antioxidants markers consisted of total antioxidant capacity (TAC), uric acid (UA), peroxidase and catalase. Oxidative stress markers included total oxidant status (TOS), malondealdehyde (MDA) and total thiol (SH). Sialochemical analysis was performed with spectrophotometric assay. All the statistical analyses were conducted using STATA software. Results: TAC decreased significantly in patients with diabetes. Although salivary UA and peroxidase were lower in patients with diabetes compared to the control group, the difference was not significant. Salivary catalase in patients with diabetes was significantly lower than that in the control group. MDA and TOS exhibited significantly higher levels in type 2 DM. SH levels were slightly higher in DM. Conclusions: According to the results of the present study, there were some changes in the salivary levels of some antioxidants and oxidative stress markers in patients with type 2 DM and could be measured as an indicator of serum changes..

scholarly journals When Uncontrolled Diabetes Mellitus and Severe COVID-19 Converge: The Perfect Storm for Mucormycosis

2021 ◽  
Vol 7 (4) ◽  
pp. 298
Author(s):  
Teny M. John ◽  
Ceena N. Jacob ◽  
Dimitrios P. Kontoyiannis
Keyword(s):  
Diabetes Mellitus ◽  
Risk Factors ◽  
Clinical Features ◽  
The Other ◽  
Diabetic Patients ◽  
Epidemiological Factors ◽  
Uncontrolled Diabetes ◽  
Diagnostic Certainty ◽  
Patients With Diabetes ◽  
Perfect Storm

Mucormycosis (MCR) has been increasingly described in patients with coronavirus disease 2019 (COVID-19) but the epidemiological factors, presentation, diagnostic certainty, and outcome of such patients are not well described. We review the published COVID-19-associated mucormycosis (CAMCR) cases (total 41) to identify risk factors, clinical features, and outcomes. CAMCR was typically seen in patients with diabetes mellitus (DM) (94%) especially the ones with poorly controlled DM (67%) and severe or critical COVID-19 (95%). Its presentation was typical of MCR seen in diabetic patients (mostly rhino-orbital and rhino-orbital-cerebral presentation). In sharp contrast to reported COVID-associated aspergillosis (CAPA) cases, nearly all CAMCR infections were proven (93%). Treating physicians should have a high suspicion for CAMCR in patients with uncontrolled diabetes mellitus and severe COVID-19 presenting with rhino-orbital or rhino-cerebral syndromes. CAMR is the convergence of two storms, one of DM and the other of COVID-19.

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