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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
Glucose handling by the kidney.
1Department of Medicine, Kolling Institute of Medical Research, University of Sydney, Sydney, NSW, Australia. amather@med.usyd.edu.au
Kidney International. Supplement
|March 2, 2011
Summary
The kidney plays a key role in glucose regulation. In type-2 diabetes, increased kidney glucose production and reabsorption contribute to high blood sugar, offering new therapeutic targets.
Area of Science:
- Nephrology
- Endocrinology
- Metabolic Diseases
Background:
- The kidney is crucial for glucose homeostasis, involving gluconeogenesis, filtration, reabsorption, and consumption.
- These kidney functions are altered in type-2 diabetes (T2DM), presenting therapeutic opportunities.
- The kidney accounts for up to 20% of glucose production, with renal gluconeogenesis significantly increasing in T2DM.
Purpose of the Study:
- To explore the kidney's role in glucose homeostasis and its dysregulation in type-2 diabetes.
- To identify potential therapeutic targets within renal glucose metabolism for T2DM management.
Main Methods:
- Review of recent studies on renal glucose metabolism in healthy individuals and T2DM patients.
- Analysis of the mechanisms of renal gluconeogenesis, glucose filtration, and reabsorption.
- Examination of the roles of sodium-dependent glucose cotransporters (SGLT1, SGLT2) and facilitative glucose transporters (GLUT1, GLUT2).
Main Results:
- Renal gluconeogenesis increases significantly in T2DM, contributing to both fasting and postprandial hyperglycemia.
- Renal glucose reabsorption capacity is maladaptively increased in T2DM patients.
- SGLT2 and SGLT1 are key transporters involved in renal glucose reabsorption, with GLUT1 and GLUT2 facilitating glucose transport into the interstitium.
Conclusions:
- The kidney's contribution to hyperglycemia in T2DM is substantial, through both increased glucose production and reabsorption.
- Targeting renal glucose transporters, particularly SGLT2, represents a promising therapeutic strategy for T2DM.
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