Diabetic Glomerulonephropathy
Overview
Plain-Language Overview
Diabetic Glomerulonephropathy is a kidney condition that occurs in people with diabetes. It affects the glomeruli, which are tiny filtering units in the kidneys responsible for cleaning the blood. Over time, high blood sugar levels damage these filters, causing them to become thickened and scarred. This damage leads to protein leakage into the urine, which is an early sign of kidney problems. As the disease progresses, it can reduce the kidneys' ability to filter waste, potentially leading to kidney failure. Managing blood sugar and blood pressure is important to slow this damage. This condition is a common cause of chronic kidney disease in diabetic patients.
Clinical Definition
Diabetic Glomerulonephropathy is a microvascular complication of diabetes mellitus characterized by progressive damage to the renal glomeruli. The core pathology involves mesangial expansion, glomerular basement membrane thickening, and nodular glomerulosclerosis (Kimmelstiel-Wilson lesions) due to chronic hyperglycemia-induced metabolic and hemodynamic changes. These changes lead to increased glomerular permeability and proteinuria, which is a hallmark clinical feature. The condition is a leading cause of end-stage renal disease (ESRD) worldwide. Pathogenesis includes advanced glycation end products, activation of the renin-angiotensin-aldosterone system, and oxidative stress. Clinically, it manifests as persistent albuminuria, declining glomerular filtration rate, and hypertension.