In diabetic ketoacidosis, characterized by excessive levels of ketones in the blood that lead to a decrease in blood pH, very high blood sugar and severe intravascular and cellular dehydration create a life-threatening disorder that requires immediate treatment.
This accumulation induced OS in the mouse brain that was characterized by excessive levels of H2O2, O2 −, MDA, protein carbonyls, and 8-hydroxy-2′-deoxyguanosine.
The toxicity induced by excessive levels of some of these elements, such as chromium (Cr), cadmium (Cd), lead (Pb) and mercury (Hg), are well known [ 8].
That may reflect the activation of innate immune cells by excessive levels of nutrient concentration, including glucose and free fatty acids.
Moreover, cancer cells escape from apoptosis induced by excessive levels of ROS activating both Erk e PI3 K signal transduction pathways.
Hemostasis can be impaired if the endothelium is stimulated by excessive levels of cytokines or by a pathogen, which may in turn result in thrombosis and bleeding [ 49, 50].
Due to increased consumption by excessive levels of ROS, sickle cell patients have decreased levels of plasma and erythrocyte total glutathione and the ratio of GSH to its oxidized form glutathione disulfide (GSSG) is reduced [ 17, 18].
Additionally, we review emerging evidence that redox reactions triggered by excessive levels of NO can contribute to protein misfolding, the hallmark of a number of neurodegenerative disorders, including AD and Parkinson's disease.
Characterised by excessive levels of hyperactivity, inattention and impulsivity which lead to impaired home, peer and school functioning, ADHD is one of the most common reasons for referral to Child and Adolescent Mental Health Services [ 2].
Cushing's syndrome also called hypercortisolism or hyperadrenocorticism is a common endocrine disorder caused by excessive levels of the endogenous corticosteroid hormone cortisol, which is secreted by the adrenal glands which are in turn related to the regulations by the pituitary gland and hypothalamus in the brain.
