Related Experiment Video
Updated: May 22, 2026
10:31
Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
The endothelium in diabetic nephropathy
Andrew Advani1, Richard E Gilbert
1Keenan Research Centre of the Li Ka Shing Knowledge Institute, St. Michael's Hospital, and Department of Medicine, University of Toronto, Toronto, Ontario, Canada. advania@smh.ca
Seminars in Nephrology
|May 24, 2012
Summary
Diabetic kidney disease involves damage to blood vessels, leading to reduced kidney function. New strategies targeting endothelial cell regeneration could improve oxygenation and slow disease progression.
Area of Science:
- Nephrology
- Endocrinology
- Vascular Biology
Background:
- Diabetic kidney disease (DKD) involves microvascular and conduit vessel pathology.
- Hyperglycemia-induced endothelial injury contributes to albuminuria via direct effects and podocyte interaction.
- While early diabetes may show neo-angiogenesis, capillary loss correlates with declining glomerular filtration rate (GFR) in DKD.
Purpose of the Study:
- To highlight the critical role of endothelium in DKD development and progression.
- To emphasize the need for strategies preventing endothelial loss or promoting regeneration.
Main Methods:
- Review of current evidence on endothelial dysfunction in diabetic nephropathy.
- Analysis of the relationship between microvascular rarefaction, hypoxia, and fibrosis.
- Correlation of capillary loss with GFR decline in patients.
Main Results:
- Endothelial injury due to hyperglycemia is a key driver of albuminuria.
- Microvascular rarefaction leads to hypoxia, stimulating fibrogenesis and advanced kidney disease.
- Capillary loss in glomeruli and interstitium is linked to reduced GFR.
Conclusions:
- The endothelium plays a central role in the pathogenesis of diabetic nephropathy.
- Strategies promoting endothelial health, preventing loss, or enhancing regeneration are crucial.
- Improving endothelial function may enhance tissue oxygenation, reduce fibrosis, and preserve renal function.
Related Concept Videos
01:28Diabetic Nephropathy
Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...
01:27Diabetic Retinopathy
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
01:20Renal Corpuscle
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...
01:22Diabetic Neuropathy
DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...
01:31Diabetic Foot Ulcer
Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...
01:10Nephrons
The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma happens...