Presence of circulatory autoantibodies against glycated histones in diabetic patient in Saudi Arabia

Background: Advanced glycation end products (AGEs) in diabetic patients can trigger several autoimmune responses. This article aims to assess the presence of circulating autoantibodies against glycated histones and their role in complications in diabetic patients in the Saudi population. Methods: A total of one hundred twenty samples were collected from diabetic patients with different age groups and healthy individuals as control. All serum samples were collected from Prince Sultan Military Medical City (PSMMC) in Riyadh City in Saudi Arabia. Glycated H2A was prepared and characterized using different physiochemical techniques. Then, ELISA was performed to assess the presence of circulating autoantibodies against glycated histones in diabetic patients’ samples compared with control healthy individuals in the Saudi population. Results: The glycation of H2A under our experimental conditions appears to be completed in 14 days. also, our data showed high circulating autoantibodies were detected against glycated H2A in all diabetic patients’ plasma with different dilutions. Remarkably, diabetic patients’ group 1 (under 20 years old group) showed highly significant binding activity values in each dilution. However, diabetic patients in groups 2 and 3 showed less binding but still significant values when compared to control healthy individuals. Conclusions: This finding provides novel perspectives into existing of circulating autoantibodies against glycated histones in diabetes patients in Saudi Arabia. Therefore, these circulating autoantibodies might be used as valuable tools for understanding the glycation mechanisms in diabetic patients in addition to providing diagnostic and prognostic knowledge. However, their roles in diabetic complications need further investigation.