Сахарный диабет (May 2022)
Markers of oxidative damage lipids and DNA in men with type 1 diabetes mellitus and different levels of albuminuria
Abstract
BACKGROUND: Diabetic nephropathy is a specific kidney damage that affects up to 40% of type 1 diabetes mellitus patients. There is still insufficient knowledge about oxidative stress at the different levels of albuminuria.AIM: To assess the indicators of oxidative damage to lipids, DNA and antioxidant defense in men with type 1 diabetes mellitus and albuminuria different levels.MATERIALS AND METHODS: The study was conducted during 2018–2019. The main group included 56 men of reproductive age with type 1 diabetes mellitus (T1DM) divided into 2 groups: 24 patients with albuminuria level A1 (group A1) and 32 patients with albuminuria level A2 (group A2). The control group consisted of 28 healthy men. The oxidative stress indicators content, as well as the activity of antioxidant defense system various links was evaluated. Spectrophotometric, fluorimetric and enzyme immunoassay methods were used.RESULTS: In patients of the A1 group there were higher values of the median of primary — conjugated dienes, secondary — ketodienes and conjugated trienes, final — Schiff bases products and 8-hydroxy-2’-deoxyguanosine in comparison with the control. Similar changes in patients of the A2 group were found. Intergroup differences related to increased median values of TBARs and 8-hydroxy-2’-deoxyguanosine in patients of the A2 group compared with A1 group. The activity of the antioxidant defense system in A1 group relative to the control by increased values of the glutathione peroxidase, reduced glutathione, oxidized glutathione median, and retinol was characterized. A2 group had higher values of glutathione peroxidase, reduced glutathione and oxidized glutathione medians in comparison with controls. Correlation analysis in A1 group showed the relationships between the duration of the disease and the products of lipid peroxidation, glycated hemoglobin with 8-hydroxy-2’-deoxyguanosine. In A2 group, there was a relationship between the albumin/creatinine ratio and the duration of the disease, glomerular filtration rate and creatinine level.CONCLUSION: In men with T1DM, regardless of the albuminuria level, there are higher values of the oxidative damage lipids and DNA parameters, as well as the presence of close relationships between these parameters and the duration of the disease, which can be used to develop potential strategies for the prevention and early therapy of diabetic nephropathy.
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