Tubulointerstitial disease in diabetic nephropathy

Area of Science:

• Nephrology
• Endocrinology
• Diabetology

Background:

• Diabetes mellitus is the primary cause of end-stage renal disease (ESRD), characterized by high cardiovascular disease incidence and mortality.
• Despite advancements, diabetes remains the leading cause of ESRD, indicating incomplete understanding of its mechanisms.
• Progressive albuminuria, once considered a hallmark, is not always present in diabetic nephropathy progression.

Purpose of the Study:

• To review hypothesized mechanisms of diabetic kidney disease (DKD) pathogenesis.
• To highlight the need for early biomarkers to prevent ESRD.
• To discuss the limitations of current renoprotective treatments and the search for novel therapeutic targets.

Main Methods:

• Review of existing randomized, prospective studies on glycemic control and ESRD.
• Analysis of current understanding of diabetic nephropathy progression.
• Exploration of hypothesized mechanisms, focusing on the tubule-interstitial compartment.

Main Results:

• Strict glycemic control is associated with reduced ESRD incidence.
• Diabetic nephropathy can progress without initial microalbuminuria.
• Current treatments offer only modest reductions in renal complications with significant side effects.

Conclusions:

• Understanding the heterogeneous mechanisms of diabetic kidney disease is crucial for preventing ESRD.
• Development of novel biomarkers for early kidney damage is essential.
• There is an unmet need for effective treatments that reduce DKD complications without adverse effects.