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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
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Potential biomarkers associated with diabetic glomerulopathy through proteomics
Yung-Chien Hsu1,2,3, Chen-Chou Lei1,2,3, Cheng Ho4
1a Department of Nephrology , Chang Gung Memorial Hospital , Chiayi , Taiwan .
Renal Failure
|September 15, 2015
Summary
Diabetic nephropathy (DN) involves kidney damage. This study used proteomics to identify key protein changes in diabetic rat glomeruli, revealing altered collagen and other protein levels linked to cellular stress and dysfunction.
Area of Science:
- Nephrology
- Proteomics
- Diabetology
Background:
- Diabetic nephropathy (DN) causes progressive glomerulosclerosis and kidney function loss.
- Limited proteomic research exists for isolated glomeruli in experimental diabetes models.
- Isolated glomerular proteomics offers a novel approach to study diabetic kidney pathology.
Purpose of the Study:
- To compare the proteomic profiles of isolated glomeruli from diabetic and non-diabetic rats.
- To identify specific protein expression changes associated with diabetic nephropathy.
Main Methods:
- Isolation of glomeruli from diabetic and control rats.
- Two-dimensional gel electrophoresis for protein separation and quantification.
- Mass spectrometry (MALDI-TOF) and bioinformatics for protein identification.
Main Results:
- Increased levels of collagen type I and IV in diabetic glomeruli.
- Elevated abundance of Protein disulfide isomerase associated 3, Aspartoacylase-3,3-hydroxymethyl-3-methylglutaryl-Coenzyme A lyase, Lactamase beta 2, and Agmat protein.
- Decreased levels of Regucalcin, rCG52140, Aldo-keto reductase family 1, Peroxiredoxin 1, and l-arginine: glycine amidinotransferase.
Conclusions:
- Proteomic analysis revealed significant alterations in glomerular proteins in diabetic rats.
- Identified proteins are implicated in endoplasmic reticulum stress, inflammation, endothelial dysfunction, and oxidative stress.
- These findings suggest multiple pathological pathways are active in diabetic nephropathy.
