Related Experiment Video
Updated: Nov 18, 2025

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
Pathophysiology of diabetic kidney disease: impact of SGLT2 inhibitors
Ralph A DeFronzo1, W Brian Reeves2, Alaa S Awad2
1Division of Diabetes, University of Texas Long School of Medicine, San Antonio, TX, USA. defronzo@uthscsa.edu.
Insights
Diabetic kidney disease (DKD) is a major cause of kidney failure. While hyperglycemia drives DKD, multiple factors contribute, necessitating combination therapies for effective treatment.
Area of Science:
- Nephrology
- Endocrinology
- Diabetology
Background:
- Diabetic kidney disease (DKD) is the leading cause of kidney failure globally, with prevalence increasing over 30 years.
- Hyperglycemia is the primary driver of DKD, leading to numerous pathophysiological disturbances.
- These include hypertension, renal hypoxia, inflammation, and podocyte injury, contributing to progressive kidney damage.
Purpose of the Study:
- To review the multifactorial pathophysiology of diabetic kidney disease.
- To discuss the role of hyperglycemia and associated disturbances in DKD progression.
- To evaluate the potential of combination therapies for managing DKD.
Main Methods:
- Literature review of studies on diabetic kidney disease pathophysiology.
- Analysis of the impact of hyperglycemia and related factors on kidney function.
- Examination of the therapeutic effects of Sodium-glucose co-transporter 2 (SGLT2) inhibitors.
Main Results:
- Hyperglycemia initiates a cascade of pathophysiological events in DKD.
- Multiple factors like hypertension, inflammation, and mitochondrial dysfunction exacerbate kidney damage.
- Sodium-glucose co-transporter 2 (SGLT2) inhibitors show promise in addressing some of these abnormalities.
Conclusions:
- Diabetic kidney disease progression is driven by complex, multifactorial pathophysiological processes.
- Effective management likely requires combination therapies targeting multiple pathways.
- Further research is needed to determine the optimal combination strategies for DKD.
Abstract:
Diabetic kidney disease is the leading cause of kidney failure worldwide; in the USA, it accounts for over 50% of individuals entering dialysis or transplant programmes. Unlike other complications of diabetes, the prevalence of diabetic kidney disease has failed to decline over the past 30 years. Hyperglycaemia is the primary aetiological factor responsible for the development of diabetic kidney disease. Once hyperglycaemia becomes established, multiple pathophysiological disturbances, including hypertension, altered tubuloglomerular feedback, renal hypoxia, lipotoxicity, podocyte injury, inflammation, mitochondrial dysfunction, impaired autophagy and increased activity of the sodium-hydrogen exchanger, contribute to progressive glomerular sclerosis and the decline in glomerular filtration rate. The quantitative contribution of each of these abnormalities to the progression of diabetic kidney disease, as well as their role in type 1 and type 2 diabetes mellitus, remains to be determined. Sodium-glucose co-transporter 2 (SGLT2) inhibitors have a beneficial impact on many of these pathophysiological abnormalities; however, as several pathophysiological disturbances contribute to the onset and progression of diabetic kidney disease, multiple agents used in combination will likely be required to slow the progression of disease effectively.
Related Concept Videos
Dipeptidyl Peptidase 4 Inhibitors
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Diabetes Mellitus: Type 2 and Gestational
Pathophysiology of Diabetes
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Diabetes: Symptoms, Diagnosis, and Complications
Oral Hypoglycemic Agents: Biguanides and Glitazones

