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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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Renin-angiotensin system within the diabetic podocyte
Eva Márquez1, Marta Riera2, Julio Pascual2
1Department of Nephrology, Hospital del Mar, Barcelona, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; and.
American Journal of Physiology. Renal Physiology
|October 24, 2014
Summary
Diabetic kidney disease damages podocytes, crucial for kidney filtration. Targeting the local renin-angiotensin system (RAS) within podocytes offers a promising new treatment strategy for diabetic nephropathy.
Area of Science:
- Nephrology
- Endocrinology
- Molecular Biology
Background:
- Diabetic kidney disease (DKD) is a primary cause of end-stage renal disease.
- Podocytes are vital for glomerular filtration barrier integrity.
- The local renin-angiotensin system (RAS) in glomeruli is implicated in DKD pathogenesis.
Purpose of the Study:
- To review the role of the intraglomerular RAS in diabetic podocytopathy.
- To explore the imbalance of RAS components in podocytes during diabetes.
- To highlight the therapeutic potential of modulating intra-podocyte RAS.
Main Methods:
- Literature review focusing on intraglomerular RAS and diabetic podocytopathy.
- Analysis of studies investigating RAS component alterations in podocytes under diabetic conditions.
- Synthesis of evidence on the effects of RAS modulation on diabetic nephropathy progression.
Main Results:
- RAS components are altered in diabetic podocytopathy, contributing to podocyte injury.
- Angiotensin II directly and indirectly injures podocytes via altered protein expression, hypertrophy, apoptosis, and GBM changes.
- RAS blockade reduces proteinuria and slows chronic kidney disease progression.
Conclusions:
- Imbalance of the intra-podocyte RAS is a key feature of diabetic podocytopathy.
- Targeting the intra-podocyte RAS presents a novel therapeutic avenue for DKD.
- Further understanding of intra-podocyte RAS mechanisms may lead to improved DKD treatments.
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