Related Experiment Videos
Atubular glomeruli and glomerulotubular junction abnormalities in diabetic nephropathy
Behzad Najafian1, Youngki Kim, John T Crosson
1Department of Pediatrics, University of Minnesota Medical School, Minneapolis, Minnesota 55455, USA.
Journal of the American Society of Nephrology : JASN
|March 28, 2003
Summary
Atubular glomeruli (AG) and associated tip lesions are common in diabetic nephropathy (DN), impacting kidney function. These findings highlight AG and glomerulotubular junction abnormalities as key factors in DN progression.
Area of Science:
- Nephrology
- Pathology
- Diabetology
Background:
- Atubular glomeruli (AG) are observed in various kidney diseases, but their role in diabetic nephropathy (DN) is understudied.
- Tip lesions in glomeruli are noted in proteinuric type 1 diabetic patients.
Purpose of the Study:
- To investigate the frequency of atubular glomeruli (AG) in diabetic nephropathy (DN).
- To explore the relationship between AG, tip lesions, and glomerular structure in DN.
Main Methods:
- Stereologic analysis of renal biopsies from type 1 diabetic patients and normal subjects using light and electron microscopy.
- Classification of glomerulotubular junctions and quantification of tubular and interstitial volumes.
Main Results:
- Diabetic nephropathy (DN) kidneys showed increased GBM width and mesangial volume, and decreased filtration surface density.
- Seventeen percent of glomeruli were atubular, and 51% were attached to atrophic tubules in DN patients.
- Tip lesions were prevalent in glomeruli attached to atrophic tubules, correlating with reduced GFR.
Conclusions:
- Atubular glomeruli (AG) and glomerulotubular junction abnormalities are significant findings in diabetic nephropathy (DN).
- These structural changes, along with tip lesions, are strongly associated with reduced Glomerular Filtration Rate (GFR) in diabetic patients.
- AG and related abnormalities may play a crucial role in the development and progression of diabetic nephropathy (DN).