Oxidative stress in diabetics induces thrombogenesis, endothelial dysfunction, and vascular inflammation [].
Furthermore, ROS production via NADPH oxidase has been implicated in the pathogenesis of angiotensin II-induced hypertension and vascular smooth muscle hypertrophy.
Inoguchi et al. [] have shown that a high glucose level stimulates ROS production through activation of PKC-dependent NADPH oxidase in both vascularsmooth muscle cells and endothelial cells, and they have also shown that the increase of ROS production by high glucose is completely reversed by diphenylene iodonium, an NADPH oxidase inhibitor.
These findings suggest that an increase of ROS production via NADPH oxidase in vascular cells may contribute to the acceleration atherosclerosis in patients with diabetes.
Inactivity increased vascularsuperoxide production and impaired endothelium-dependent vasorelaxation.
Inactivity increases vascular NADPH oxidase expression and activity and enhances vascularROS production, which contributes to endothelial dysfunction and atherosclerosis during sedentary as opposed to physically active lifestyle.
From these results we hypothesize that in CFS there is oxidative stress in muscle, which results in an increase in antioxidant defenses.
In this study, we detected oxidative damage to DNA and lipids in muscle specimens of CFS patients as compared to age-matched controls, as well as increased activity of the antioxidant enzymes catalase, glutathione peroxidase, and transferase, and increases in total glutathione plasma levels.
Recent evidence suggests that sputum 8-isoprostane mirrors airway oxidative stress and is related to respiratory disease type pattern and activity ().
This review will critically review potential markers that reflect oxidative stress in the airways of patients with asthma and COPD in exhaled air, exhaled breath condensate (EBC) and induced sputum.
This suggests that curcumin has a potential to inhibit overall oxidative damage experienced by the retina in diabetes.
In diabetes the retina experiences increased oxidative stress , and reactive oxygen species (ROS) are considered as a causal link between elevated glucose and the metabolic abnormalities important in the development of diabetic complications .
The purpose of the current study was to analyze and compare oxidative stress and other compositional parameters in the saliva, serum and peritoneal dialytic fluid (PDF) of patients with chronic kidney disease (CKD), including predialysis CKD patients and end-stage renal disease (ESRD) patients treated with peritoneal dialysis.
Therefore, it is plausible to assume that oxidative stress/damage measured frequently in blood after exercise or any other experimental intervention derives, at least in part, from the blood.
A muscle-centric approach is frequently adopted to explain reactive species generation, which obscures the possibility that sources of reactive species and oxidative damage other than skeletal muscle may be also at work during exercise.
The generation of ROS by the P450 system is important during the metabolic process of steroid hormone synthesis from cholesterol in endocrine organs, such as the ovary and testis.
Modification of mitochondrial function, like a much higher ROS production, was also observed in islets from LP offspring (Theys, unpublished data).
Therefore, the ability of OS to damage pancreatic islets and markedly blunt insulin secretion is not surprising.
Exposure of pancreatic islets to oxidative stress causes defective insulin gene expression due to modification of at least two critical factors that modulate the insulin promoter : PDX-1 and c-Myc .
Ten proteins involved in protein folding and chaperoning were found to be altered by the low protein diet in proteomic analysis and data provided by microarray analysis are congruent with an increased sensitivity to oxidative stress in islets from LP fetuses .
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