Diabetes mellitus type 1 According to the current definition, two fasting glucose measurements above 126 mg/dl (7.0 mmol/l) is considered diagnostic for diabetes mellitus. In type 1, pancreatic beta cells in the islets of Langerhans are destroyed, decreasing endogenous insulin production. This distinguishes type 1's origin from type 2. Type 2 diabetes is characterized by insulin resistance, while type 1 diabetes is characterized by insulin deficiency, generally without insulin resistance. Another hallmark of type 1 diabetes is islet autoreactivity, which is generally measured by the presence of autoantibodies directed towards the beta cells. The appearance of diabetes-related autoantibodies has been shown to be able
Epigenetics of diabetes Type 2 left behind during both HCNE-driven expression and IRX3 expression. In summary, persons at high risk for Type 2 Diabetes and obesity have a highly methylated 7.7 kb region in the linkage disequilibrium block of the FTO gene. This methylation leads to the deactivation of the HCNE located within it, and decreased IRX3 expression. When IRX3 was knocked out, there was a drop in the number of β-cells that produce insulin and the α-cells that produce glucagon. This sudden drop indicates a direct relationship between the FTO gene, IRX3, and Type 2 diabetes. Epigenetics of diabetes Type 2 In recent years