Immunological evidence for increased oxidative stress in diabetic rats
Abstract
The role of oxidative stress in aging and diabetes mellitus is currently under discussion. We previously showed age-dependent accumulations of fluorescent protein adducts with lipoperoxidative aldehydes, (malondialdehyde (MDA), and hydroxynonenal (HNE)) in rat skin collagen with diabetic BB rats exhibiting faster accumulation. Modified proteins have been shown to be immunogenic: antibody titres against rat serum albumin modified by MDA and HNE (MDA-RSA and HNE-RSA) or oxidized by reactive oxygen species were measured by ELISA as markers of oxidative damage in BB diabetic and non-diabetic rats. Each tested antibody titre was significantly higher in the diabetic than in the non-diabetic rats. A significant correlation existed between anti-MDA-RSA and anti-HNE-RSA antibody titers. Only the anti-HNE-RSA antibody titre increased significantly with age (p=0.052) in diabetic animals, while no titres increased significantly in non-diabetic animals. A major factor which correlated with the development of these antibodies was diabetes duration: this was significant (p=0.032) for anti-HNE-RSA antibody titre and slightly significant (p=0.05) for anti-MDA-RSA antibody titre. Thus, chronic hyperglycaemia is probably fundamental in the increa...Continue Reading
Citations
Related Concepts
Related Feeds
Autoimmune Diabetes & Tolerance
Patients with type I diabetes lack insulin-producing beta cells due to the loss of immunological tolerance and autoimmune disease. Discover the latest research on targeting tolerance to prevent diabetes.
ApoE, Lipids & Cholesterol
Serum cholesterol, triglycerides, apolipoprotein B (APOB)-containing lipoproteins (very low-density lipoprotein (VLDL), immediate-density lipoprotein (IDL), and low-density lipoprotein (LDL), lipoprotein A (LPA)) and the total cholesterol/high-density lipoprotein (HDL) cholesterol ratio are all connected in diseases. Here is the latest research.